cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Sociedade Digital: a redefinição da escola, do papel do professor e do aluno The Digital Society: the redefinition of the school, the role of the teacher and the student
Creators: name: Lopes, Natália Moura
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2018
Subjects: Novas Tecnologias, Professor – Aluno- Prática Pedagógica

description: Perante a atual sociedade da informação é impossível manter a escola distante das novas tecnologias, já que estas podem oferecer-lhe um vasto leque de possibilidades quer para os professores, quer para os alunos. Os novos instrumentos tecnológicos proporcionam uma aprendizagem mais interativa, criativa e uma construção coletiva do conhecimento. O interesse por este tema surgiu depois de se ter constatado que apesar dos professores fazerem formação no âmbito das Tecnologias de Informação e de Comunicação – TIC- (Lopes, 2015), muitos ainda não as deixam entrar nas suas salas de aula. O objetivo central deste artigo é, portanto refletir sobre o novo papel da escola, do professor e do aluno diante do uso das novas tecnologias, em prol de um melhor ensino e aprendizagem. Palavras-chave: Novas Tecnologias – Professor – Aluno- Prática Pedagógica Given the current information society, it is impossible to keep the school away from new technologies, since they can offer a wide range of possibilities for both teachers and students. The new technological tools provide a more interactive and creative learning and a collective construction of knowledge. The interest in this topic arose after it was found that although teachers do training in ICT, many still do not let them enter in their classrooms. The main aim of this article is, therefore, to reflect on the new role of the school, of the teacher and of the student towards new technologies for better teaching and learning. Keywords: New Technologies - Teacher - Student - Pedagogical Practice
description: Saber & Educar, n. 25 (2018): Educar com TIC para o Século XXI
Finite-well potential in the 3D nonlinear Schroedinger equation: Application to Bose-Einstein condensation
Creators: name: Adhikari, Sadhan K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: Using variational and numerical solutions we show that stationary negative-energy localized (normalizable) bound states can appear in the three-dimensional nonlinear Schrödinger equation with a finite square-well potential for a range of nonlinearity parameters. Below a critical attractive nonlinearity, the system becomes unstable and experiences collapse. Above a limiting repulsive nonlinearity, the system becomes highly repulsive and cannot be bound. The system also allows nonnormalizable states of infinite norm at positive energies in the continuum. The normalizable negative-energy bound states could be created in BECs and studied in the laboratory with present knowhow.
description: 8 pages, 12 figures
Η ποιοτική αξιολόγηση της ομαδικής θεραπευτικής παρέμβασης σε νεαρά άτομα με εμπειρία ενδοοικογενειακής βίας στα πλαίσια του προγράμματος UNARS (Understanding Agency and Resistance Strategies: Childre
Creators: name: Καραγκιοζίδου, Μαρία Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Ενδοοικογενειακή βί-Παρεμβάσεις
Ποιοτική Αξιολόγηση
Domestic Violence-Interventions
Qualitative Evaluation

description: Στόχος της παρούσας εργασίας ήταν η ποιοτική αξιολόγηση της ομαδικής θεραπευτικής παρέμβασης που πραγματοποιήθηκε στα πλαίσια του προγράμματος UNARS σε παιδιά/ νεαρά άτομα με εμπειρία ενδοοικογενειακής βίας. Η ομαδική θεραπευτική παρέμβαση, όσον αφορά το ελληνικό σκέλος, αποτελούνταν από οχτώ συνεδρίες και δύο follow-up συναντήσεις που πραγματοποιήθηκαν κατά την περίοδο 2014-2015 σε τρεις ομάδες στη Θεσσαλονίκη και τη Βέροια. Στην παρούσα αξιολόγηση, το δείγμα αποτέλεσαν πέντε κορίτσια και ένα αγόρι, τα οποία δέχθηκαν να μιλήσουν για την εμπειρία τους από την παρέμβαση. Τα δεδομένα προσεγγίστηκαν ποιοτικά και για την ανάλυση και την επεξεργασία χρησιμοποιήθηκε η μέθοδος της Θεματικής Ανάλυσης. Τα αποτελέσματα που συζητώνται περιλαμβάνουν: α)τη γενική αποτίμηση της παρέμβασης από τους/τις συμμετέχοντες/ουσες β)το αντίκτυπο της παρέμβασης στα μέλη της ομάδας γ)τους διευκολυντικούς παράγοντες που συνέβαλαν στην εκπλήρωση των στόχων της παρέμβασης και δ)την προαγωγή της ψυχικής ανθεκτικότητας
description: The objective of this study was the qualitative evaluation of a group therapeutic intervention performed under UNARS program for children / young people with experience of domestic violence. The group therapeutic intervention, as regards the Greek part, consisted of eight sessions and two follow-up meetings held during the period 2014-2015 in three groups in Thessaloniki and Veria. In this evaluation, the sample consisted of five girls and a boy, who agreed to talk about their experience of the intervention. The qualitative data were accessed for analysis and processing method of thematic analysis was used. The results, which are under discussion, include: a) a general evaluation of the intervention by the participants b) the impact of the intervention on group members’ lives c) the factors that have contributed to fulfilling the objectives of the intervention and d) the promotion of resilience
Δόλος και αμέλεια στο παράδειγμα οδικής και θαλάσσιας συγκοινωνίας. Κριτική προσέγγιση των αλλαγών στον Ποινικό Κώδικα και στον Κώδικα Ποινικής Δικονομίας
Creators: name: Δαβιώτη, Μαρία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: ενδεχόμενος δόλος
ενσυνείδητη αμέλεια
πολύνεκρα δυστυχήματα
dolus eventualis
conscious negligence
deadly accidents

description: Σκοπός της διατριβής είναι η μελέτη της διάκρισης του «ενδεχόμενου δόλου» από την «ενσυνείδητη αμέλεια», τόσο σε θεωρητικό όσο και σε νομολογιακό επίπεδο, ως δύο συγγενικές μορφές υπαιτιότητας του Ουσιαστικού Ποινικού Δικαίου και συγκεκριμένα όσον αφορά τα αδικήματα που τελούνται στον χώρο της οδικής και της θαλάσσιας συγκοινωνίας (πολύνεκρα δυστυχήματα). Συστηματοποιούνται οι σημαντικότερες θεωρητικές προσεγγίσεις που έχουν διατυπωθεί τόσο στην γερμανική όσο και στην ελληνική ποινική επιστήμη επί της επίμαχης διάκρισης και παρατίθενται κάποια κριτήρια διάγνωσης του ενδεχόμενου δόλου που έχουν διατυπωθεί στην ελληνική ποινική επιστήμη και νομολογία (ενδείξεις), τα οποία βοηθούν να έχουμε μία σαφέστερη οριοθέτηση των δύο μορφών υπαιτιότητας. Η παρούσα μελέτη προσεγγίζει καταρχήν το ζήτημα αναλύοντας παραδείγματα από ατυχήματα που έλαβαν χώρα στην οδική και θαλάσσια συγκοινωνία. Επιπροσθέτως, καταγράφονται ελληνικά νομολογιακά δεδομένα που μας βοηθούν να προσεγγίσουμε το ζήτημα και συμβάλλουν επίσης στην δημιουργία μίας πιο σφαιρικής αντίληψης αναφορικά με την σημασία της παραπάνω διάκρισης. Τέλος, αξιοσημείωτες είναι κάποιες σημαντικές τροποποιήσεις που έχουν επέλθει στο άρθρο 94 του Ποινικού Κώδικα και στο άρθρο 282 του Κώδικα Ποινικής Δικονομίας με την έκδοση του Ν. 3346/2005 κυρίως, καθώς σχετίζονται με το αντικείμενο μελέτης της παρούσης
description: The aim of the present thesis is the study of the distinction between “dolus eventualis” and “conscious negligence” both in theory and in case law, as two related forms of culpability of Substantive Criminal Law and specifically as regards to the crimes that take place in road and maritime transport (deadly accidents). The most important theoretical approaches developed both in criminal law study in German and Greek criminal law as regards to this distinction are presented in the present thesis and also are mentioned some criteria for diagnosis of “dolus eventualis” (indications) that help us to have a more explicit delimitation of the two forms of culpability. Firstly, the current thesis approaches the problem by analysing some cases of road and maritime accidents. Furthermore, is made a reference to Greek jurisprudence that helps us to approach the issue and that also contributes to have an overall view about the significance of the above mentioned distinction. Finally, remarkable are some substantial amendments of the article 94 of the Greek Penal Code and the article 282 of the Greek Code of Criminal Procedure brought by the law 3346/2005 mainly because they are related with the study of the present thesis
Do ensino explícito de estratégias de compreensão leitora ao sucesso na aprendizagem da leitura: programa de intervenção no 3.º ano de escolaridade From the explicit teaching of reading comprehension strategies to the success in reading learning
Creators: name: Ferreira, Mafalda
name: Gonçalves, Carolina
Publisher: name: Escola Superior de Educação de Paula Frassinetti - CIPAF
Year: 2019
Subjects: estratégias de compreensão leitora, ensino explícito, leitura, avaliação

description: A leitura é, nos dias de hoje, uma competência transversal e necessária ao sucesso escolar dos alunos. No entanto, o seu desenvolvimento requer uma aprendizagem formal e implica um ensino explícito de estratégias de compreensão leitora para que os alunos possam, autonomamente, mobilizar estas ferramentas nos diversos contextos do seu quotidiano. Neste artigo, apresenta-se um projeto de investigação-ação, implementado numa turma de 3.º ano do 1.º Ciclo do Ensino Básico. O programa de intervenção incidiu no ensino explícito de estratégias de compreensão leitora, em particular a compreensão inferencial, a compreensão crítica e a reorganização da informação. Após a intervenção, os três domínios de compreensão leitora apresentaram índices evolutivos de 8%, 25% e 50% respetivamente. Os resultados do estudo demonstraram que o ensino explícito das estratégias de compreensão leitora contribuiu expressivamente para a melhoria do desempenho dos From the explicit teaching of reading comprehension strategies to the success in reading learning: an intervention program in Grade 3 alunos Reading is, today, a transversal and necessary competence for pupils' school success. However, it requires a formal learning and implies an explicit teaching of reading comprehension strategies so that pupils can autonomously mobilize these tools in the different contexts of their daily lives. In this article, we present an action-research project implemented in a 3rd grade class of the 1st Cycle of Basic Education. The intervention program focused on the explicit teaching of reading comprehension strategies, in particular inferential, critical and information reorganization. The domains of inferential comprehension, information reorganization and critical comprehension presented evolutionary indices of 8%, 25% and 50% respectively. In this context, the results of the study demonstrated that the explicit teaching of reading comprehension strategies contributed expressively to the improvement of pupils' performance. Keywords: reading comprehension strategies, explicit teaching, reading, assessment
description: Saber & Educar, n. 25 (2018): Educar com TIC para o Século XXI
Quark lepton complementarity and renormalization group effects
Creators: name: Schmidt, Michael A.
name: Smirnov, Alexei Yu.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a scenario for the Quark-Lepton Complementarity relations between mixing angles in which the bi-maximal mixing follows from the neutrino mass matrix. According to this scenario in the lowest order the angle θ_{12} is \sim 1σ(1.5 - 2^\circ) above the best fit point coinciding practically with the tri-bimaximal mixing prediction. Realization of this scenario in the context of the seesaw type-I mechanism with leptonic Dirac mass matrices approximately equal to the quark mass matrices is studied. We calculate the renormalization group corrections to θ_{12} as well as to θ_{13} in the standard model (SM) and minimal supersymmetric standard model (MSSM). We find that in large part of the parameter space corrections Δθ_{12} are small or negligible. In the MSSM version of the scenario the correction Δθ_{12} is in general positive. Small negative corrections appear in the case of an inverted mass hierarchy and opposite CP parities of ν_1 and ν_2 when leading contributions to θ_{12} running are strongly suppressed. The corrections are negative in the SM version in a large part of the parameter space for values of the relative CP phase of ν_1 and ν_2: ϕ> π/2.
description: version as published in PRD, 14 pages, 12 figures
Maximizing Spin-Orbit Torque Generated by the Spin Hall Effect of Pt
Creators: name: Zhu, Lijun
name: Ralph, Daniel C.
name: Buhrman, Robert A
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: Efficient generation of spin-orbit torques (SOTs) is central for the exciting field of spin-orbitronics. Platinum, the archetypal spin Hall material, has the potential to be an outstanding provider for spin-orbit torques due to its giant spin Hall conductivity, low resistivity, high stabilities, and the ability to be compatible with CMOS circuits. However, pure clean-limit Pt with low resistivity still provides a low damping-like spin-orbit torque efficiency, which limits its practical applications. The efficiency of spin-orbit torque in Pt-based magnetic heterostructures can be improved considerably by increasing the spin Hall ratio of Pt and spin transmissivity of the interfaces. Here we reviews recent advances in understanding the physics of spin current generation, interfacial spin transport, and the metrology of spin-orbit torques, and summarize progress towards the goal of Pt-based spin-orbit torque memories and logic that are fast, efficient, reliable, scalable, and non-volatile.
description: Comments are welcome
A toy model of a fake inflation
Creators: name: Novello, M.
name: Huguet, E.
name: Queva, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Discontinuities in non linear field theories propagate through null geodesics in an effective metric that depends on its dynamics and on the background geometry. Once information of the geometry of the universe comes mostly from photons, one should carefully analyze the effects of possible nonlinearities on Electrodynamics in the cosmic geometry. Such phenomenon of induced metric is rather general and may occurs for any nonlinear theory independently of its spin properties. We limit our analysis here to the simplest case of non linear scalar field. We show that a class of theories that have been analyzed in the literature, having regular configuration in the Minkowski space-time background is such that the field propagates like free waves in an effective deSitter geometry. The observation of these waves would led us to infer, erroneously, that we live in a deSitter universe.
Μεθοδολογία ανάπτυξης εκπαιδευτικών εφαρμογών βασισμένων σε τρισδιάστατη περιήγηση
Creators: name: Αθανασιάδης, Ιωάννης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Τρισδιάστατη Περιήγηση
360 Περιήγηση
3D Tour
360 Tour

description: Ο βασικός στόχος της παρούσας διπλωματικής είναι η ανάπτυξη μεθοδολογίας για την υλοποίηση εκπαιδευτικών εφαρμογών με τη χρήση της τρισδιάστατης περιήγησης. Αρχικά θα γίνει ανάλυση στα είδη των εικονικών περιηγήσεων που πραγματοποιούνται με τη χρήση α) πανοραμικών εικόνων σε 360, β) βίντεο και γ) στοιχείων αλληλεπίδρασης χρήστη-εικονικού περιβάλλοντος, όπως επίσης και τις τεχνολογίες που χρειάζονται για την υλοποίηση τους. Ακόμη θα εξετάσουμε τα πλεονεκτήματα και τα μειονεκτήματα που παρουσιάζουν μεταξύ τους τα διαφορετικά είδη περιήγησης. Στη συνέχεια θα γίνει μια ανασκόπηση εικονικών περιηγήσεων που χρησιμοποιούνται σε διάφορους τομείς. Τέλος θα αναπτυχθεί η μεθοδολογία με την χρήση της οποίας είναι δυνατή η υλοποίησης μιας τρισδιάστατης περιήγησης με δυνατότητα αλληλεπίδρασης ανάμεσα στο χρήστη και το περιβάλλον. Βάσει της μεθοδολογίας που αναπτύχθηκε, υλοποιήθηκε ένα πρωτότυπο τρισδιάστατης διαδραστικής περιήγησης της μονής Σταυρονικήτα του Άγιου Όρους
description: The present dissertation mainly focuses on developing a methodology for the implementation of educational applications through the use of 3D-touring. Three types of virtual touring will initially be analyzed, realized through 360o panoramic images, video and elements of interaction between user and virtual environment. Τhe technologies required for their realization will additionally be examined. The advantages and disadvantages of these different types of virtual touring will also be compared and discussed, followed by an overview of 3D tours that are already in use. The development of a methodology through which one can implement a 3D tour which enables interaction between user and environment constitutes a considerable concern of the thesis. This methodology has led to the conception and creation of a prototype of a 3D interactive tour of the monastery of Stayronikita in Agion Oros
Fraction of the radial velocity stable stars in the early observations of the Grid Giant Star Survey
Creators: name: Bizyaev, Dmitry
name: Smith, Verne V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The GGSS is a partially-filled, all-sky survey to identify K-giant stars with low level of RV-variability. We study histograms of the radial velocity (RV) variability obtained in the early phase of the Grid Giant Star Survey (GGSS, Bizyaev et al., 2006). This part of the survey has been conducted with a very limited nubmer of observations per star, and rough accuracy. We apply the Monte-Carlo simulations to infer a fraction of the RV-stable stars in the sample. Our optimistic estimate is that 20% of all considered K-giants have RV-variability under 30 m s$^{-1}$. Different assumptions of intrinsic RV-variability for our stars give 12 -- 20 % of RV-stable K-giants in the studied sample.
description: 3 pages, 2 figures, to be published in PASP
A distributed directory service
Creators: name: Li, Hongbing
Publisher: name: University of British Columbia
Year: 2009

description: Fast response time, large amounts of directory information, and friendly user interfaces are key criteria for a good distributed directory service. Although there are some Internet directory services developed, many of them have failed to achieve these goals. The work presented in this thesis is motivated by the importance of an Internet directory service, specifically to provide network users' email addresses, and the current development of such services, which is neither adequate nor effective. We designed and implemented a light weight directory (lwd) service system, which provides an Internet white pages service, with the following features: simple architecture, easy incorporation of new sources of information, and quick response time to users' queries. The system avoids requiring global cooperation, as most of other directory service system do by storing all of the white-pages information locally. Thus response time to users' queries are much faster. The system provides a mechanism to collect and exchange information among different sites in the system. Two information exchange protocols have been implemented, one guaranteeing all information maintained on one site can be transferred to another, and the other more intuitive and easier to implement. In comparison of the lwd system to several important Internet white pages services, we found that lwd has simple query structure, fast response time, and friendly user interface. In the lwd system, only a person's name is required to look up instead of hierarchical structure information or a set of keywords many other existing or proposed directory services demand. Also, the system provides error-tolerance capability to users' queries by conducting "approximate matches" to user submitted partial names.
Παρακολούθηση της νόσου της σκολίωσης
Creators: name: Δαρέλλης, Δημήτριος Ηρακλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Σκολίωση
Παρακολούθηση της νόσου της σκολίωσης
Καταγραφή στάσεων σώματος
Scoliosis
Scoliosis monitoring
Body postures monitoring

description: Η σκολίωση αποτελεί μια νόσο που προκαλεί σημαντικά προβλήματα στην σπονδυλική στήλη και εμφανίζεται σε όλες τις ηλικίες. Η αντιμετώπιση της εξαρτάται από τον τύπο και την σοβαρότητά της. Η παρούσα έρευνα καλείται να εξετάσει εάν η σκολίωση μπορεί να αντιμετωπιστεί με την χρήση της τεχνολογίας, αναπτύσσοντας λογισμικό που βασίζεται στην ανίχνευση της θέσης και της κίνησης των σπονδύλων μέσω αισθητήρων. Για την υλοποίηση της μελέτης χρησιμοποιηθήκαν δύο kits: το Metawear CPRO και το Metamotion R που περιέχουν τους αισθητήρες: επιταχυνσιόμετρο, γυροσκόπιο, μαγνητόμετρο και για την επικοινωνία bluetooth. Η εφαρμογή αναπτύχθηκε σε λογισμικό Android και η μόνη προϋπόθεση λειτουργίας είναι το κινητό να έχει λογισμικό Android 4.4 (KITKAT) API Level: 19 ή μεγαλύτερο λόγο συμβατότητας του BLTE. Η εφαρμογή απευθύνεται αποκλειστικά για τους ασθενής και η ιστοσελίδα απευθύνεται στους γιατρούς και στους ασθενής. Η σχεδίαση τους έχει γίνει απλή για τους χρήστες, όμως θα πρέπει να υπάρχουν βασικές γνώσεις λειτουργίας από τους γιατρούς, ώστε να γίνει η εκπαίδευση των ασθενών
description: Scoliosis is a disease that causes significant problems in the spine and occurs in all age groups. The treatment depends on the type and severity. This research examines whether the scoliosis can be treated with the use of the technology by developing software based on the detection of the position and movement of the vertebrae via sensors. For the implementation of the study two kits were used: the Metawear CPRO and Metamotion R which are equipped with the following sensors: accelerometer, gyroscope, magnetometer and the bluetooth communication. The application was developed on Android and the only operating condition is that the mobile has to be running Android 4.4 (KITKAT) API Level: 19 or greater for compatibility reason of BLTE. The application is intended exclusively for the patients and the website is aimed for doctors and patients. Their design is user friendly, but there should be a basic familiarity of these technologies by the doctors in order to train their patients
Lexical and grammatical elicitation: Adjectives, ditransitives, and complementation
Creators: name: Chemtai, Sharon
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .wav file and one .pdf file. Elicitation of adjectives in the singular and plural. Elicitation of ditransitives with multiple local person objects. Elicitation of complementation structures with and without the inflected complementizer.
Fabrication of screen-printed electrodes and modification with Fe3O4/attapulgite magnetic nanoparticles
Creators: name: Μπούτου, Κάτια Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Τυπωμένα ηλεκτρόδια
Μαγνητίτης
Ατταπουλγίτης
Screen-printed electrodes
Magnetite
Attapulgite

description: Στην παρούσα διπλωματική εργασία έγινε κατασκευή τυπωμένων ηλεκτροδίων από άργυρο, γραφίτη και αιθάλη. Τα μαγνητικά νανοσωματίδια Fe3O4/ατταπουλγίτη παρασκευάστηκαν με δύο διαφορετικές μεθόδους, η πρώτη με σύνθεση των μαγνητικών νανοσωματιδίων Fe3O4 πάνω στον ατταπουλγίτη με τη μέθοδο της συγκαταβύθισης και η δεύτερη με ανάμιξη ατταπουλγίτη και έτοιμων νανοσωματιδίων Fe3O4. Τα αποτελέσματα XRD σε συμφωνία με τα αποτελέσματα BET και SEM, υπέδειξαν ότι το πιο κατάλληλο υλικό για την μορφοποίηση της επιφάνειας των τυπωμένων ηλεκτροδίων είναι αυτό που παρασκευάστηκε με ανάμιξη των δύο επιμέρους υλικών, και εμφάνισε ομογενή κατανομή, ισχυρή προσρόφηση νανοσωματιδίων Fe3O4 πάνω στον ατταπουλγίτη και μη σχηματισμό συσσωματωμάτων. Τα μορφοποιημένα ηλεκτρόδια υποβλήθηκαν σε μετρήσεις κυκλικής βολταμμετρίας και ηλεκτροχημικής φασματοσκοπίας εμπέδησης για να μελετηθεί η ηλεκτροχημική τους συμπεριφορά. Τα αποτελέσματα έδειξαν ότι η μορφοποίηση των ηλεκτροδίων αργύρου δεν παρουσίασε βελτιωμένες ηλεκτροχημικές ιδιότητες καθώς το εναποτιθέμενο υλικό εμπόδισε την άμεση αντίδραση του αργύρου με τα ιόντα Cl- του διαλύματος. Ωστόσο, στην περίπτωση των τυπωμένων ηλεκτροδίων από γραφίτη και αιθάλη, παρατηρήθηκε ότι μετά τη μορφοποίηση της επιφάνειας τους με μαγνητικά νανοσωματίδια Fe3O4/ατταπουλγίτη τα ηλεκτρόδια παρουσίασαν καλύτερη ηλεκτροκαταλυτική δραστηριότητα, ευαισθησία και σταθερότητα
description: In this study, cost-effective screen printed electrodes have been fabricated based on silver, carbon black and carbon graphite inks. Magnetite Fe3O4/attapulgite magnetic composite was obtained by two different methods, the first with synthesis of Fe3O4 nanoparticles on attapulgite via co-precipitation method, and the second by mixing attapulgite and prepared Fe3O4 nanoparticles. XRD results came in a good agreement with BET and SEM results, indicating that the most appropriate composite for surface modification of the SPE’s was prepared by mixing of the two constituent materials and demonstrated homogenous distribution, strong adsorption of Fe3O4 nanoparticles on attapulgite and avoidance of aggregation. The modified SPE’s electrodes were subjected to Cyclic Voltammetry (CV) and Electrochemical Impedance Spectroscopy (EIS) measurements to assess their electrochemical behavior. Results revealed that modification of Silver SPE’s did not improved their electrochemical performance, since the composite hindered the direct reaction of silver with the Cl- ions of the solution. Nonetheless, in case of Carbon Black and Carbon Graphite SPE’s it has been observed that upon surface modification with the Fe3O4/attapulgite composite, the SPE’s exhibited better electrocatalytic activity, sensitivity and stability
Archaeology at the Hotel, Paleontology at the Chacra: scientific encounters in unexpected places
Creators: name: PODGORNY Irina, RICHARD Nathalie
Publisher: name: Zenodo
Year: 2022
Subjects: History of science, history of collections, amateurs, scientifc encounters

description: Powerpoint presentation of communication at the Prague 2021 International congress of History of Science and Technology. Until the 1930’s, in prehistoric archaeology and palaeontology ollecting practices, and all activities related to providing field data to the scientific institutions, were poorly valued and loosely controlled. This created a paradox: essential as the field collectors and the practice of collecting were for the development of these scientific fields, scientific institutions generally delegated it to subaltern actors. While some of those agents were educated by instructions emanated from scientific centres, the majority of people gathering objects or data, acquired their expertise by other means How and where did they acquire theinformation about the importance of collecting and what to collect? One answer is by direct encounters with other collectors who shared their experience. These encounters did happen in the most unexpected locations, which up to now, are mostly out of historians’ sight but acted as actual relays, connecting people on the move. Some of these places were transitory, some more permanent, but all of them were not thought as a place for “scientific” training nor sociability. Hotels, cafés, the pilot house analysed by García- they were the obligatory stop or meeting point for those who intended to go into the field, especially in regions far away from the main scholarly institutions By tackling two case studies analysed in the context of the EU project SciCoMove, our paper deals with these questions. It focuses on two hotels near the village of Carnac in Western France and a "chacra" in Uruguay, and highlights the central role of these unexpected locations in the development of archaeology and palaeontology in the 19th Century. It argues that these facilities not only provided accommodation for traveling naturalists, archaeologists and tourists, but were also a central place for encounters between various actors, for the production of scientific knowledge, the circulation of information and the sharing of know-how.
Διερεύνηση Μελετών Περιβαλλοντικών Επιπτώσεων δρόμων σε περιαστικά δάση
Creators: name: Πέτση, Αναστασία Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μελέτες Περιβαλλοντικών Επιπτώσεων (ΜΠΕ)
Περιαστικό Δάσος-Σέιχ Σου
Environmental Impact Assessment (EIA)
peri-urban forest-Seich-Sou

description: Σκοπός της παρούσης μεταπτυχιακής διατριβής είναι να μελετηθούν οι επιπτώσεις που δημιουργούνται στα δασικά οικοσυστήματα από την διάνοιξη δρόμων γύρω από αυτά. Αρχικά αναφέρεται τι ακριβώς είναι μια Μελέτη Περιβαλλοντικών Επιπτώσεων (ΜΠΕ), πως αυτή συντάσσεται, ποια στοιχεία πρέπει να έχει, από ποιον συντάσσεται αυτή, αλλά και ποιος την αναθέτει, καθώς επίσης και οι δυσκολίες που αντιμετωπίζονται κατά την σύνταξή της, αλλά και τα αποτελέσματα αυτής. Η μεθοδολογία πραγματοποιήθηκε με βιβλιογραφική ανασκόπηση ερευνών και του νομοθετικού πλαισίου βάση του οποίου συντάσσονται και οι μελέτες περιβαλλοντικών επιπτώσεων. Πιο συγκεκριμένα χρησιμοποιήθηκαν και κάποιες μελέτες περιβαλλοντικών επιπτώσεων που αφορούσαν το οδικό δίκτυο του δάσους του Σεϊχ Σου, που εκτείνεται γύρω από την πόλη της Θεσσαλονίκης, το οποίο αποτελεί και την περιοχή έρευνας της διατριβής. Τα αποτελέσματα που προέκυψαν αναφέρονται στα επιπλέον βελτιωτικά μέτρα που μπορούν να πραγματοποιηθούν στο δάσος, όσον αφορά την διάνοιξη του και την προστασία του από πιθανές πυρκαγιές. Τέλος, προκύπτει το συμπέρασμα ότι κρίνεται απαραίτητη η διαδικασία σύνταξης των ΕΠΕ & ΜΠΕ από διεπιστημονική ομάδα, καθώς επιβάλλεται και η πρόβλεψη εφαρμογής κατάλληλων μεθόδων και τεχνικής εκτίμησης των αντίστοιχων επιπτώσεων
description: The purpose of this master thesis is to study the effects arising in forest ecosystems from the opening of roads around them. Originally referred to what is an Environmental Impact Assessment (EIA) that was drawn up, which elements should have, by whom it is drawn up, and what to delegate, as well as the difficulties encountered in the syntax, but the results thereof. The methodology was performed literature review and research the legal framework based on which are drawn up and environmental impact studies. Specifically they used some environmental impact studies on the roads of the forest of Seich Sou, which extends around the city of Thessaloniki, which is also the thesis research area.The results refer to additional mitigating measures that can be taken in the forest, in terms of opening and protection from possible fires. Finally, we conclude that the process of preparation of EIA and EIA is necessary interdisciplinary team as required and provision application of appropriate methods and technical assessment of their effects
Some Implications of the Cosmological Constant to Fundamental Physics
Creators: name: Aldrovandi, R.
name: Almeida, J. P. Beltran
name: Pereira, J. G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the presence of a cosmological constant, ordinary Poincare' special relativity is no longer valid and must be replaced by a de Sitter special relativity, in which Minkowski space is replaced by a de Sitter spacetime. In consequence, the ordinary notions of energy and momentum change, and will satisfy a different kinematic relation. Such a theory is a different kind of a doubly special relativity. Since the only difference between the Poincare' and the de Sitter groups is the replacement of translations by certain linear combinations of translations and proper conformal transformations, the net result of this change is ultimately the breakdown of ordinary translational invariance. From the experimental point of view, therefore, a de Sitter special relativity might be probed by looking for possible violations of translational invariance. If we assume the existence of a connection between the energy scale of an experiment and the local value of the cosmological constant, there would be changes in the kinematics of massive particles which could hopefully be detected in high-energy experiments. Furthermore, due to the presence of a horizon, the usual causal structure of spacetime would be significantly modified at the Planck scale.
description: 15 pages, lecture presented at the "XIIth Brazilian School of Cosmology and Gravitation", Mangaratiba, Rio de Janeiro, September 10-23, 2006
Δυνατότητα σύνδεσης Πανεπιστημιακού Δάσους Ταξιάρχη με το Αριστοτελικό Μονοπάτι
Creators: name: Αναστασιάδης, Νικόλαος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Μονοπάτι Αριστοτέλη
GPS χειρός
Πανεπιστημιακό Δάσος Ταξιάρχη Χαλκιδικής
Aristotle’s path
Handheld GPS
University Forest of Taxiarchis- Chalkidiki

description: Κύριος σκοπός της παρούσας μεταπτυχιακής διατριβής είναι η παρουσίαση μιας διαδρομής που θα αποτυπώνεται ψηφιακά και θα είναι δυνατή η χρήση της από κάθε περιηγητή που επιθυμεί να μεταβεί από το Πανεπιστημιακό Δάσος Ταξιάρχη Χαλκιδικής στο Άλσος του Αριστοτέλη (Στάγειρα). Η μέθοδος που χρησιμοποιήθηκε είναι αυτή της ψηφιακής αποτύπωσης με χρήση GPS χειρός, δημιουργίας βάσης γεωγραφικών δεδομένων, geotagging και η απόδοση της σε ψηφιακό χάρτη της εφαρμογής Google Earth. Αποτελέσματα αυτής της διαδικασίας ήταν η δημιουργία ενός “αρχείου – οδηγού” με όλα τα σημεία ενδιαφέροντος (σημεία θέας) σε αυτήν την νεοσύστατη διαδρομή σε συνδυασμό με οπτικοακουστικό υλικό και ιστορικά δεδομένα της περιοχής καθώς και ενός “αυτόνομου αρχείου – οδηγού” για έξυπνές συσκευές (Android και iOS) χωρίς την απαίτηση χρήσης διαδικτύου. Ένα επιμέρους αποτέλεσμα ήταν η αδυναμία διέλευσης μέσα από το δάσος της Αρναίας λόγω της παραχώρησης μέρους της έκτασης στην «Ελληνικός Χρυσός Α.Ε.» για αυτό και επιμηκύνθηκε η συνολική διαδρομή
description: The goal of this master thesis is the presentation of a route digitally depicted, which will be usable by any traveler wishing to go from University Forest of Taxiarchis – Chalkidiki to Aristotle’s Park (Stagira). The method used is that of digital capture using handhels GPS, Geographical database creation, Geotagging and the output to a digital map of the Google Earth Application. Results of this process were the creation of a “file – guide” with all interest points (viewing points) of this newly created route accompanied by audiovisual material and historical data of the area, and a “stand alone file – guide” for smart devices (Andoid and iOS) without requiring Internet connection. An individual result was the inability transit through the forest of Arnaia because the concession part of the area to “Hellas Gold S.A.”, concluding to the lengthening of the overall route
Classification of topological invariants related to corner states
Creators: name: Hayashi, Shin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: K-Theory and Homology (math.KT)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 19K56 (Primary), 47B35, 81V99 (Secondary)

description: We discuss some bulk-surfaces gapped Hamiltonians on a lattice with corners and propose a periodic table for topological invariants related to corner states aimed at studies of higher-order topological insulators. Our table is based on four things: (1) the definition of topological invariants, (2) a proof of their relation with corner states (3) computations of K-groups and (4) a construction of explicit examples.
description: 46 pages, 1 figure
Odd Entanglement Entropy and Logarithmic Negativity for Thermofield Double States
Creators: name: Ghasemi, Mostafa
name: Naseh, Ali
name: Pirmoradian, Reza
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the time evolution of odd entanglement entropy (OEE) and logarithmic negativity (LN) for the thermofield double (TFD) states in free scalar quantum field theories using the covariance matrix approach. To have mixed states, we choose non-complementary subsystems, either adjacent or disjoint intervals on each side of the TFD. We find that the time evolution pattern of OEE is a linear growth followed by saturation. On a circular lattice, for longer times the finite size effect demonstrates itself as oscillatory behavior. In the limit of vanishing mass, for a subsystem containing a single degree of freedom on each side of the TFD, we analytically find the effect of zero-mode on the time evolution of OEE which leads to logarithmic growth in the intermediate times. Moreover, for adjacent intervals we find that the LN is zero for times $t < β/2$ (half of the inverse temperature) and after that, it begins to grow linearly. For disjoint intervals at fixed temperature, the vanishing of LN is observed for times $t
description: 44 pages, 17 figures, Comments about memory effect and some references are added
Environmental dependence of dark matter halo abundances
Creators: name: Χήρα, Μαρία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Κοσμολογία
Σκοτεινή ύλη
Συνάρτηση αφθονίας
Cosmology
Dark matter
Abundance function

description: Μελετούμε την επιρροή του περιβάλλοντος στην Συνάρτηση Αφθονίας(Abundance Function) των άλω σκοτεινής ύλης και συγκεκριμένα σε πολύ χαμηλής και πολύ υψηλής πυκνότητας περιοχές. Ορίζουμε το περιβάλλον με τη βοήθεια του μεγέθους που καλούμε “Ακτίνα Απομόνωσης” της κάθε άλω. Εφαρμόζοντας διάφορες μεθόδους στατιστικής ανάλυσης βρίσκουμε σημαντικές διαφορές μεταξύ των AF των απομονωμένων άλω και της συνολικής κατανομής, ενώ οι διαφορές είναι ακόμη οξύτερες σε σχέση με την AF σε πολύ σμηνοποιημένες περιοχές, γεγονός που καταδεικνύει διαφορετικές διεργασίες σχηματισμού των άλω σε διαφορετικά περιβάλλοντα. Χρησιμοποιώντας τη μέθοδο ελαχιστοποίησης του χ-τετράγωνο βρίσκουμε για διαφορετικές ακτίνες απομόνωσης την καλύτερη συνάρτηση μορφής Schechter που περιγράφει τις AF και εξετάζουμε τη συμπεριφορά των χαρακτηριστικών παραμέτρων. Καταλήγουμε σε συστηματική μείωση της χαρακτηριστικής μάζας (M*) αυξανομένης της ακτίνας απομόνωσης, αλλά και μία μη αναμενόμενη, στατιστικά σημαντική αλλαγή αυτής της συμπεριφοράς για τα πιο απομονωμένα αντικείμενα του δείγματός μας
description: Ιn the current thesis we have investigated the environmental dependence of halo abundances, using a simple monoparametric criterion, consisting of the normalised distance to the first neighbour, for the definition of the environment. By applying our method on halo catalogues of the light-cone N-body simulation data generated by the DEUS project, we found that the abundance of halos is strongly environmentdependent. We quantified its change with environment by studying the behaviour of the two main parameters of the fitted double Schechter-like function, i.e., the slope, α, and the characteristic mass, M*, and found that both have a decreasing tendency with isolation, except for the most extreme isolated environments, where, unexpectedly, M* increases. This interesting result seems to originate from high redshifts, which implies a significant evolution of the isolation of the most massive isolated halos. Using as a further parameter the distance to the second neighbour for the identification of the very dense areas, we obtain an abundance function that is in excellent agreement with that found by other multiparametric methods for the ”knots”
Nonsaturated Holographic Dark Energy
Creators: name: Guberina, B.
name: Horvat, R.
name: Nikolic, H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It has been well established by today that the concept of holographic dark energy (HDE) does entail a serious candidate for the dark energy of the universe. Here we deal with models where the holographic bound for dark energy is not saturated for a large portion of the history of the universe. This is particularly compelling when the IR cutoff is set by the Hubble scale, since otherwise a transition from a decelerated to an accelerated era cannot be obtained for a spatially flat universe. We demonstrate by three generic but disparate dynamical models, two of them containing a variable Newton constant, that transition between the two eras is always obtained for the IR cutoff in the form of the Hubble scale and the nonsaturated HDE. We also give arguments of why such a choice for the dark energy is more consistent and favored over the widely accepted saturated form.
description: 9 pages, minor revision, to appear in JCAP
Additional file 1 of Monophyletic blowflies revealed by phylogenomics
Creators: name: Yan, Liping
name: Pape, Thomas
name: Meusemann, Karen
name: Kutty, Sujatha Narayanan
name: Meier, Rudolf
name: Bayless, Keith M.
name: Zhang, Dong
Publisher: name: figshare
Year: 2021
Subjects: subject: Neuroscience
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 1: Table S1. Taxon sampling [19, 56, 84–88] in this study and statistics of analyses.
Towards Axiomatic Explanations for Neural Ranking Models
Creators: name: Völske, Michael
name: Bondarenko, Alexander
name: Fröbe, Maik
name: Hagen, Matthias
name: Stein, Benno
name: Singh, Jaspreet
name: Anand, Avishek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Recently, neural networks have been successfully employed to improve upon state-of-the-art performance in ad-hoc retrieval tasks via machine-learned ranking functions. While neural retrieval models grow in complexity and impact, little is understood about their correspondence with well-studied IR principles. Recent work on interpretability in machine learning has provided tools and techniques to understand neural models in general, yet there has been little progress towards explaining ranking models. We investigate whether one can explain the behavior of neural ranking models in terms of their congruence with well understood principles of document ranking by using established theories from axiomatic IR. Axiomatic analysis of information retrieval models has formalized a set of constraints on ranking decisions that reasonable retrieval models should fulfill. We operationalize this axiomatic thinking to reproduce rankings based on combinations of elementary constraints. This allows us to investigate to what extent the ranking decisions of neural rankers can be explained in terms of retrieval axioms, and which axioms apply in which situations. Our experimental study considers a comprehensive set of axioms over several representative neural rankers. While the existing axioms can already explain the particularly confident ranking decisions rather well, future work should extend the axiom set to also cover the other still "unexplainable" neural IR rank decisions.
description: 10 pages, 2 figures. Published in the proceedings of ICTIR 2021
A VHDL front end
Creators: name: Chen, Baokang
Publisher: name: University of British Columbia
Year: 2009

description: VHDL (the VHSIC Hardware Description Language) is an industry standard language used to describe hardware from the rather abstract behaviors to the very concrete circuits. This thesis is about the design and implementation of a VHDL front end. A brief introduction to VHDL is given with easy-to-understand examples. Our focus of the front end is on type checking and overload resolution in VHDL. Data structures and the approach to parsing VHDL are discussed in detail. We also propose a program interface to the front end and provide users with a set of library routines for further processing of a VHDL program. The application of the front end is illustrated by the elaboration of generate statements.
Decoherence and Dephasing in Kondo Tunneling through Double Quantum Dots
Creators: name: Kiselev, M. N.
name: Kikoin, K.
name: Avishai, Y.
name: Richert, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We describe the mechanism of charge-spin transformation in a double quantum dot (DQD) with even occupation, where a time dependent gate voltage v(t) is applied to one of its two valleys, whereas the other one is coupled to the source and drain electrodes. The Kondo tunneling regime under strong Coulomb blockade may be realized when the spin spectrum of the DQD is formed by the ground state spin triplet and two singlet excitations. Charge fluctuations induced by v(t) result in transitions within the spin multiplet characterized by the SO(5) dynamical symmetry group. In a weakly non-adiabatic regime the decoherence, dephasing and relaxation processes affect Kondo tunneling. Each of these processes is caused by a special type of dynamical gauge fluctuations, so that one may discriminate between the decoherence in the ground state of a DQD and dephasing at finite temperatures.
description: 14 pages, 7 eps figures
Allelopathic effects of leucaena leaves extract (Leucaena leucocephala (Lam.) de Wit) on the growth of rice (Oryza sativa L.), wrinkle duck-beak (Ischaemum rugosum Salisb), and mung bean (Vigna radiata (L.) R. Wilczek)
Creators: name: Pudcharaporn Boaprem
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: allelopathy
rice
wrinkle duck-beak
mung bean
Leucaena leaves extract
Leucaena leucocephala

description: Songklanakarin Journal of Science and Technology, 41, 3, 619-623
The QED Initial State Corrections to the Forward-Backward Asymmetry of $e^+e^- \to γ^*/Z^{0*}$ to Higher Orders
Creators: name: Blümlein, J.
name: De Freitas, A.
name: Schönwald, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The QED initial state corrections are calculated to the forward-backward asymmetry for $e^+e^- \rightarrow γ^*/{Z^{0}}^*$ in the leading logarithmic approximation to $O(α^6 L^6)$ extending the known corrections up to $O(α^2 L^2)$ in analytic form. We use the method of massive on-shell operator matrix elements and present the radiators both in Mellin-$N$ and momentum fraction $z$-space. Numerical results are presented for various energies around the $Z$-peak by also including energy cuts. These corrections are of relevance for the precision measurements at the FCC$\_$ee.
description: Dedicated to the Memory of Tini Veltman, who made it possible to probe the Standard Model at high precision