cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Επικοινωνία και σχέσεις στη σχολική τάξη: Η διάγνωση της ΔΕΠ-Υ και προτάσεις παρέμβασης για το μάθημα της Γερμανικής ως Ξένης Γλώσσας
Creators: name: Γιαννουλάκη, Χρυσούλα Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Επικοινωνία
ΔΕΠ-Υ
Παρεμβάσεις
Communication
ADHD
Interventions
Διάσπαση προσοχης και γερμανική γλώσσα

description: Η εργασία αυτή επιχειρεί να δώσει μια διαφορετική οπτική στην προβληματική συμπεριφορά του υπερκινητικού παιδιού στο σχολείο. Η άποψη που επικρατεί σήμερα στον ελλαδικό χώρο ευνοεί την παρουσία του ειδικού στα σχολεία, τονίζει την ανάγκη για έγκαιρη και πρώιμη διάγνωση και ωθεί σε παραπομπή του υπερκινητικού μαθητή σε διαγνωστικά κέντρα. Αυτή η τάση οδηγεί σταδιακά στον αποκλεισμό των παιδιών από τις κοινωνικές τους σχέσεις. Στο ελληνικό σχολείο προωθούνται κυρίως γνωσιοσυμπεριφορικές πρακτικές για την αντιμετώπιση της ΔΕΠ-Υ. Ωστόσο, υπάρχουν κι άλλες πρακτικές, οι οποίες στηρίζονται στην Αναστοχαστική Πράξη και στοχεύουν στην αλλαγή των σχέσεων στη σχολική τάξη, καθώς και στην σημασία του ανοιχτού διαλόγου. Σε αυτήν την προσέγγιση βασίζεται η διδακτική εφαρμογή της ταινίας «η τάξη που πετάει», που έχει ως θέμα της την επικοινωνία στο σχολείο και τις σχέσεις μεταξύ μαθητών και εκπαιδευτικού.
description: This thesis attempts to give a different perspective to the problematic behavior of hyperactive children at school. The view that prevails today in Greece, favors the presence of the specialist in school, stresses the need for early diagnosis and promotes the referral of the hyperactive student to the medical centers. This trend will eventually lead to the exclusion of children from their social relationships. In the Greek school are mainly Cognitive-Behavioral interventions promoted in order to treat ADHD. However, there are other interventions based on the Reflective Practice, which aim to change the relationships in the classroom, as well as to highlight the importance of open dialogue. On this approach is based the teaching application of the film "the flying classroom", which makes the communication in school and the relationships between the students and their teacher subject of discussion.
Οι απόψεις των νηπιαγωγών για το ολοήμερο νηπιαγωγείο.
Creators: name: Τσαπακίδου, Αγγελική
name: Σιβροπούλου, Ρένα
name: Αναστασιάδου, Σοφία
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: This paper aims at identifying kindergarten teachers’ point of view about the structure and function of all day kindergarten, as well as the curriculum 
content. Questionnaire was used as a research instrument. 101 kindergarten teachers, who work in kindergartens in West Macedonia region and in Thessaloniki, were participated in the research. The data indicated that the curriculum must be indeed flexible providing parents with the opportunity of selecting the time of their children’s departure from kindergarten; moreover it was showed that emphasis must be given on game activities after napping.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Nonlinear Incremental Control for Flexible Aircraft Trajectory Tracking and Load Alleviation
Creators: name: Wang, Xuerui
name: Mkhoyan, Tigran
name: De Breuker, Roeland
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a nonlinear control architecture for flexible aircraft simultaneous trajectory tracking and load alleviation. By exploiting the control redundancy, the gust and maneuver loads are alleviated without degrading the rigid-body command tracking performance. The proposed control architecture contains four cascaded control loops: position control, flight path control, attitude control, and optimal multi-objective wing control. Since the position kinematics are not influenced by model uncertainties, the nonlinear dynamic inversion control is applied. On the contrary, the flight path dynamics are perturbed by both model uncertainties and atmospheric disturbances; thus the incremental sliding mode control is adopted. Lyapunov-based analyses show that this method can simultaneously reduce the model dependency and the minimum possible gains of conventional sliding mode control methods. Moreover, the attitude dynamics are in the strict-feedback form; thus the incremental backstepping sliding mode control is applied. Furthermore, a novel load reference generator is designed to distinguish the necessary loads for performing maneuvers from the excessive loads. The load references are realized by the inner-loop optimal wing controller, while the excessive loads are naturalized by flaps without influencing the outer-loop tracking performance. The merits of the proposed control architecture are verified by trajectory tracking tasks and gust load alleviation tasks in spatial von Karman turbulence fields.
description: 27 pages, 25 figures, submitted to AIAA SciTech-GNC 2021
A Multi-modal Machine Learning Approach and Toolkit to Automate Recognition of Early Stages of Dementia among British Sign Language Users
Creators: name: Liang, Xing
name: Angelopoulou, Anastassia
name: Kapetanios, Epaminondas
name: Woll, Bencie
name: Al-batat, Reda
name: Woolfe, Tyron
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The ageing population trend is correlated with an increased prevalence of acquired cognitive impairments such as dementia. Although there is no cure for dementia, a timely diagnosis helps in obtaining necessary support and appropriate medication. Researchers are working urgently to develop effective technological tools that can help doctors undertake early identification of cognitive disorder. In particular, screening for dementia in ageing Deaf signers of British Sign Language (BSL) poses additional challenges as the diagnostic process is bound up with conditions such as quality and availability of interpreters, as well as appropriate questionnaires and cognitive tests. On the other hand, deep learning based approaches for image and video analysis and understanding are promising, particularly the adoption of Convolutional Neural Network (CNN), which require large amounts of training data. In this paper, however, we demonstrate novelty in the following way: a) a multi-modal machine learning based automatic recognition toolkit for early stages of dementia among BSL users in that features from several parts of the body contributing to the sign envelope, e.g., hand-arm movements and facial expressions, are combined, b) universality in that it is possible to apply our technique to users of any sign language, since it is language independent, c) given the trade-off between complexity and accuracy of machine learning (ML) prediction models as well as the limited amount of training and testing data being available, we show that our approach is not over-fitted and has the potential to scale up.
Excited $J^{--}$ meson resonances at the SU(3) flavor point from lattice QCD
Creators: name: Johnson, Christopher T.
name: Dudek, Jozef J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present the first calculation within lattice QCD of excited light meson resonances with $J^{PC} = 1^{--}$, $2^{--}$ and $3^{--}$. Working with an exact SU(3) flavor symmetry, for the singlet representation of pseudoscalar-vector scattering, we find two $1^{--}$ resonances, a lighter broad state and a heavier narrow state, a broad $2^{--}$ resonance decaying in both $P$- and $F$-waves, and a narrow $3^{--}$ state. We present connections to experimental $ω^\star_J, ϕ^\star_J$ resonances decaying into $πρ$, $K\bar{K}^*$, $ηω$ and other final states.
Impact of Climate Change on Parasitic Disease Infecting Livestock
Creators: name: Aditi Malviya, G. Ramya Bharathi, Sandhana Krishnan S., Anandu S
Publisher: name: The Science world a Monthly e magazine
Year: 2023

description: Climate change encompasses alterations in the Earth's climate, whether resulting from natural variations or human-induced activities. It manifests as prolonged shifts in temperature and weather patterns, impacting various aspects of our environment. The factors contributing to climate change are categorized into natural causes, such as solar radiation, ocean currents, forest fires, volcanic eruptions, meteorites, and methane gas emissions. Anthropogenic causes include the use of synthetic fertilizers, chemicals, deforestation, changes in land use, greenhouse gas emissions, industrialization, unplanned urbanization, and numerous other human behaviours. The anticipated impacts of climate change include changes in weather patterns, increased frequency of cyclonic disturbances, rising sea levels, shifts in agricultural yields, alterations in freshwater supply, effects on forests and natural ecosystems, and impacts on human and animal health.
Quantum mold casting for topological insulating and edge states
Creators: name: Yang, X. M.
name: Song, Z.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the possibility of transferring fermions from a trivial system as particle source to an empty system but at topological phase as a mold for casting a stable topological insulator dynamically. We show that this can be realized by a non-Hermitian unidirectional hopping, which connects a central system at topological phase and a trivial flat-band system with a periodic driving chemical potential, which scans over the valence band of the central system. The near exceptional-point dynamics allows a unidirectional dynamical process: the time evolution from an initial state with full-filled source system to a stable topological insulating state approximately. The result is demonstrated numerically by a source-assistant QWZ model and SSH chain in the presence of random perturbation. Our finding reveals a classical analogy of quench dynamics in quantum matter and provides a way for topological quantum state engineering.
description: 9 pages, 6 figures
Μαθητές με μαθησιακές δυσκολίες: Μια ερευνητική προσέγγιση των κινήτρων τους στο γυμνάσιο.
Creators: name: Σουσαμίδου-Καραμπέρη, Αικατερίνη
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The aim of the present study was to investigate whether the motives of students with LD who have attended mainstream classes for at least six years differ from their classmates’. In order to meet this aim 167 students in secondary school were studied at the age of 12-15 years. 84 of them were children with LD and the rest were “normal” children. They all filled in a questionnaire which investigated their motives towards academic achieve¬ment and parents interest on their improvement at school. Data were analyzed with a series of ANOVAs which showed that motives of children with LD are lower than those of “normal” children. Working mothers with a high school degree motivate their children more than housewives and less educated mothers but this happens only when their children are «normal». Students of both groups are less motivated as grades are higher. These results indicate that children with LD need encouragement to attend mainstream classes satisfactorily.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Η συνεισφορά των προγραμμάτων Εξομοίωσης στο κοινωνικό και συμβολικό κεφάλαιο των δασκάλων
Creators: name: Ασημάκη, Άννα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: The purpose of this assignment is to investigate the motives of the teachers attended, as well as the efectiveness of the “Assimilation” program, that took place at Pyrgos during the Academic year 2004-2005, and was organized by the Department of Elementary Education - University of Patras.
For the conduct of this research a questionnaire was elaborated and filled in by a group of teachers who attendet the program. The investigative questions regarded:
a) The extent of the relation between the reasons the educators have for attending the program and their social and symbolic asset, b) To what extent did the “Assimilation” program for positive or negative views to the participants.
The findings showed that the teachers of the sample admit an academic and cognitive inadequacy related to the original two - year studies in the Pedagogical Academies and believe that the participation in the “Assimilation” program is a relativety effective way to cover this deficiency and restore their social and symbolic image.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
A comparison of methods for gravitational wave burst searches from LIGO and Virgo
Creators: name: Beauville, F.
name: Bizouard, M. -A.
name: Blackburn, L.
name: Bosi, L.
name: Brocco, L.
name: Brown, D.
name: Buskulic, D.
name: Cavalier, F.
name: Chatterji, S.
name: Christensen, N.
name: Clapson, A. -C.
name: Fairhurst, S.
name: Grosjean, D.
name: Guidi, G.
name: Hello, P.
name: Heng, S.
name: Hewitson, M.
name: Katsavounidis, E.
name: Klimenko, S.
name: Knight, M.
name: Lazzarini, A.
name: Leroy, N.
name: Marion, F.
name: Markowitz, J.
name: Melachrinos, C.
name: Mours, B.
name: Ricci, F.
name: Viceré, A.
name: Yakushin, I.
name: Zanolin, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The search procedure for burst gravitational waves has been studied using 24 hours of simulated data in a network of three interferometers (Hanford 4-km, Livingston 4-km and Virgo 3-km are the example interferometers). Several methods to detect burst events developed in the LIGO Scientific Collaboration (LSC) and Virgo collaboration have been studied and compared. We have performed coincidence analysis of the triggers obtained in the different interferometers with and without simulated signals added to the data. The benefits of having multiple interferometers of similar sensitivity are demonstrated by comparing the detection performance of the joint coincidence analysis with LSC and Virgo only burst searches. Adding Virgo to the LIGO detector network can increase by 50% the detection efficiency for this search. Another advantage of a joint LIGO-Virgo network is the ability to reconstruct the source sky position. The reconstruction accuracy depends on the timing measurement accuracy of the events in each interferometer, and is displayed in this paper with a fixed source position example.
description: LIGO-Virgo working group submitted to PRD
Το ελληνικό σχολείο των Αγ. Σαράντα «Adem Sheme»
Creators: name: Παπαδοπούλου, Μαρία Πέτρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: ελληνόφωνη εκπαίδευση
μειονότητα
διγλωσσία
Greek education
minority
bilingualism

description: Η παρούσα εργασία έχει ως στόχο να μελετήσει τη στάση των παιδιών που φοιτούν στα ελληνικά τμήματα του σχολείου «Adem Sheme», είτε αυτά είναι ελληνικής καταγωγής είτε αλβανικής, ως προς τις δύο χώρες, Ελλάδα και Αλβανία, αλλά και τις δύο γλώσσες, καθώς και τις δεξιότητές τους σε αυτές. Για τους σκοπούς της εργασίας πραγματοποιήθηκαν δύο επισκέψεις στο σχολείο, συμπλήρωση ερωτηματολογίων και συζητήσεις με παιδιά και εκπαιδευτικούς.
description: The present paper aims at studying the attitude of children attending the Greek speaking classes of the school “Adem Sheme”, either they are Greek or Albanian, towards the two countries, Greece and Albania, and the two languages, as well as their abilities in these languages. Two visits to the school, a questionnaire and conversation with the children and some their teachers were needed to write the present paper.
description: Συνεργαζόμενα Τμήματα Πανεπιστήμιο Λε Μαν (Maine France, Γαλλία)
Variability in NGC 3201 giant stars and its impact on their spectroscopic [Fe/H] determination
Creators: name: Albornoz, Á. Llancaqueo
name: Villanova, S.
name: Cortés, C. C.
name: Ahumada, J. A.
name: Parisi, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the analysis of 34 light curves in $V$ and $I$ of 17 giant stars in the globular cluster NGC 3201, to check if such stars are variable and if their variability has some kind of impact on the iron abundance as obtained from spectroscopic measurements. First, we computed the Generalized Lomb-Scargle and Phase Dispersion Minimization periodograms on the sample to check if the stars were variables. In this way, 7 stars of the sample were found to be non-variable, 2 stars are considered as possible variables, and 8 stars were found to be variable, with periods ranging from $0.0881\pm0.0001$ to $0.5418\pm0.0027$ days. According to the literature, the variables have distinct values of $\text{[Fe I/H]}$: the 3 most metal-rich stars are in the RGB stage, one has an $\text{[Fe I/H]}=-1.37$ dex, while the other two have $\text{[Fe I/H]}=-1.31$ dex. The two most metal-poor variables have $\text{[Fe I/H]}=-1.61$ dex and $\text{[Fe I/H]}=-1.62$ dex, and are AGB stars; the remaining variables have $\text{[Fe I/H]}=-1.44$, $-1.48$, and $-1.50$ dex, the first two being RGB while the last is AGB star. On the other hand, stars that appear to be non-variables have $-1.56\leq\text{[Fe I/H]}\leq-1.40$. We conclude that variability somehow affects the spectroscopic determination of the iron content of giant stars in NGC 3201 increasing the iron spread of the cluster. If variability is not taken into account, this spread could be wrongly interpreted as due to an intrinsic iron spread affecting the stars of the cluster.
description: 23 pages, 30 idividual figure files distributed in 14 figures (1 figure is the Orcid figure), accepted in The Astronomical Journal (AJ)
Ab initio study of the vibrational properties of crystalline TeO2: The alpha, beta, and gamma phases
Creators: name: Ceriotti, Michele
name: Pietrucci, Fabio
name: Bernasconi, Marco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on density functional perturbation theory, we have studied the vibrational properties of three crystalline phases of tellurium dioxide: paratellurite alpha-TeO2, tellurite beta-TeO2, and the new phase gamma-TeO2, recently identified experimentally. Calculated Raman and IR spectra are in good agreement with available experimental data. The vibrational spectra of alpha- and beta-TeO2 can be interpreted in terms of vibrations of TeO2 molecular units.
Παιδιά με νευροψυχιατρικές διαταραχές: Ερευνητικά δεδομένα και ο ρόλος σχολείου και εκπαιδευτικού
Creators: name: Σαλπιστής, Σάββας Ν.
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: Children with neuropsychiatric disorders, such as children with attention-deficit/hyperactivity disorder, have recently become the object of many investigations because of the particularity and the difficulties in handling their problems. The etiology of these disorders has also become the object of intense controversies and at the moment the interest is focused in a neuropsychiatric perspective. However, if we want to have a nuanced view about these children in both a theoretical as in clinical level, then the neuropsychiatric perspective must be integrated in a whole whitch is the result of the interaction between genetic, constitutional, intrapsychic, interpersonal, social, political and cultural factors.
Since every kind of development presumes an interaction between people, the responsibility of handling the difficulties of these children in kindergarden and school rests upon the educational stuff which must handle them professionaly using themselves as “instrument”. This means that the stuff must show besides professional competence, sensitivity, acceptance of any unlikeliness and respect for every child’s peculiar nature.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
What Library Digitization Leaves Out: Predicting the Availability of Digital Surrogates of English Novels
Creators: name: Riddell, Allen
name: Bassett, Troy J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: Library digitization has made more than a hundred thousand 19th-century English-language books available to the public. Do the books which have been digitized reflect the population of published books? An affirmative answer would allow book and literary historians to use holdings of major digital libraries as proxies for the population of published works, sparing them the labor of collecting a representative sample. We address this question by taking advantage of exhaustive bibliographies of novels published for the first time in the British Isles in 1836 and 1838, identifying which of these novels have at least one digital surrogate in the Internet Archive, HathiTrust, Google Books, and the British Library. We find that digital surrogate availability is not random. Certain kinds of novels, notably novels written by men and novels published in multivolume format, have digital surrogates available at distinctly higher rates than other kinds of novels. As the processes leading to this outcome are unlikely to be isolated to the novel and the late 1830s, these findings suggest that similar patterns will likely be observed during adjacent decades and in other genres of publishing (e.g., non-fiction).
Η παρατήρηση και αξιολόγηση της διδασκαλίας στην εκπαίδευση των εκπαιδευτικών: Μέθοδοι και προσεγγίσεις
Creators: name: Πετσιμέρη, Ειρήνη
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: In the present work, we explore the issues of teaching observation and evaluation in teacher education at the level of secondary education in Greece. Our purpose is to present and analyze the main elements compris¬ing these two issues, the role of which, although critical for the success of the teaching process, hasn’t fully been taken advantage of so far. The elements presented are related to the definition of the criteria of a successful teach¬ing process, the choice of the appropriate observation method and finally the synthesis and/or adaptation of the evaluation method. All elements have been systematically studied and applied in the Anglo-Saxon educational sys¬tem. The possibility of their implementation in the Greek educational sys¬tem is explored in the final part of this work, via the presentation of specif¬ic proposals.
description: Παιδαγωγική Επιθεώρηση, Vol. 43 (2007)
Hyperspheres in Euclidean and Minkowski 4-spaces as almost paracontact almost paracomplex Riemannian manifolds
Creators: name: Manev, Mancho
name: Tavkova, Veselina
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary 53C15, 53C45, Secondary 53D15

description: Almost paracontact almost paracomplex Riemannian manifolds of the lowest dimension are studied. Such structures are constructed on hyperspheres in 4-dimensional spaces, Euclidean and pseudo-Euclidean, respectively. The obtained manifolds are studied and characterised in terms of the classification used and their geometric properties.
description: 9 pages
Διαδικτυακό διαδραστικό δημοτικό σύστημα διαχείρισης πληροφοριών. Πιλοτική εφαρμογή στο Δήμο Κορδελιού-Ευόσμου:
Creators: name: Κουκούλης, Γεώργιος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: ΓΣΠ
Δήμος
Αναφορά προβλημάτων
Πληθοπορισμός
Ανοιχτό λογισμικό
GIS
Municipality
Issue report
Crowdsourcing
Opensource software
Google Maps

description: Στην παρούσα διπλωματική εργασία περιγράφονται οι τεχνικές λεπτομέρειες για την ανάπτυξη ενός διαδικτυακού Πληροφοριακού Συστήματος, το περιβάλλον χρήστη, καθώς επίσης και οι λειτουργίες που παρέχονται στους πολίτες και στις δημοτικές αρχές, με σκοπό την αναφορά και την διαχείριση μη έκτακτων περιστατικών. Γίνεται εκτενής αναφορά στον τρόπο που ο πληθοπορισμός μπορεί να συνδράμει στην αναφορά τοπικών προβλημάτων στην διοικητική ενότητα του Δήμου Κορδελιού-Ευόσμου, όπως λακκούβες, έλλειψη καθαριότητας, καμένες λάμπες, σπασμένα πλακάκια ή και παράνομες πινακίδες. Επιπλέον πολλά νοικοκυριά αντιμετωπίζουν βιοποριστικά προβλήματα. Το Διαδικτυακό Πληροφοριακό Σύστημα αναπτύχθηκε με την χρήση εξολοκλήρου ανοικτού λογισμικού.
description: This work describes the technical details of the creation of an online Municipal Information System, its user interface, as well as the functions that offers to citizens and to the municipal authorities with the aim of reporting and administrating non-emergency issues. It is further analyzed how the crowdsourcing can help reporting issues include local problems in the administrative area of the municipality of Kordelio-Evosmos, such as potholes, illegal trash dumping, faulty street lights, broken tiles on sidewalks, damaged parks and illegal advertising boards. Additionally, many households face many other problems such as lack of electricity or heating, unemployment etc.. This online information system has been developed by using only open source tools.
Spin-flop transitions and spin-wave gaps in La_2CuO_4
Creators: name: Luscher, Andreas
name: Sushkov, Oleg P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the spin-wave spectrum and the spin-flop transitions in La_2CuO_4 in a uniform magnetic field at zero temperature. Using the non-linear sigma-model, we show that a field applied along the orthorhombic b direction leads to a two-step rotation of the staggered magnetization, first in the bc and then in the ac plane, until the order parameter is completely aligned along the c axis. In contrast, for a perpendicular magnetic field, we find a conventional spin-flop transition induced by the competition between the field and the interlayer coupling. A comparison with recent measurements of the field-dependence of the in-plane spin-wave gap shows a beautiful agreement between theory and experiments.
description: 7 pages, 3 figures; added reference
Confronting lattice parton distributions with global QCD analysis
Creators: name: Bringewatt, J.
name: Sato, N.
name: Melnitchouk, W.
name: Qiu, Jian-Wei
name: Steffens, F.
name: Constantinou, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present the first Monte Carlo based global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs) that includes nucleon isovector matrix elements in coordinate space from lattice QCD. We investigate the degree of universality of the extracted PDFs when the lattice and experimental data are treated under the same conditions within the Bayesian likelihood analysis. For the unpolarized sector, we find rather weak constraints from the current lattice data on the phenomenological PDFs, and difficulties in describing the lattice matrix elements at large spatial distances. In contrast, for the polarized PDFs we find good agreement between experiment and lattice data, with the latter providing significant constraints on the spin-dependent isovector quark and antiquark distributions.
description: 23 pages, 4 figures
Πολιτικές ελέγχου του διαδικτύου: μια συγκριτική αποτίμηση:
Creators: name: Λαζόπουλος, Δημήτριος Περικλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Έλεγχος
Διαδίκτυο
Λογοκρισία
Κυβερνήσεις
Control
Internet
Censorship
Governmental

description: Η παρούσα εργασία επιχειρεί να σκιαγραφήσει τις προσπάθειες ελέγχου του διαδικτύου από τις Κυβερνήσεις, ανεπτυγμένων και αναπτυσσόμενων κρατών, εστιάζοντας σε σχετικούς ισχύοντες νόμους, καθώς και σε προτάσεις νόμου. Μαζί με την αναζήτηση των παραπάνω, αναζητούνται τα αίτια που ωθούν του κρατούντες τα ηνία των χωρών, να περιορίσουν το διαδίκτυο σε ό,τι αφορά την ελευθερία διάδοσης των πληροφοριών και το είδος του περιεχομένου. Εξετάζεται ο τρόπος με τον οποίο τίθενται οι εκάστοτε φραγμοί, όπως επίσης το εύρος τους και οι επιπτώσεις τους επί των παραβατών των λογοκριτικών νόμων. Στο πλαίσιο του εν λόγω πονήματος, λαμβάνονται υπ’ όψιν και μελετώνται κράτη που ανήκουν στο φάσμα των δημοκρατικών, των ημι-δημοκρατικών και των αυταρχικών καθεστώτων, ούτως ώστε να γίνουν αντιληπτές οι διαφορετικές μέθοδοι ελέγχου του διαδικτύου. Συν τοις άλλοις εξετάζεται αν όλα τα κράτη, ανεξαρτήτως καθεστώτος, κρίνουν το διαδίκτυο σαν μία πηγή απειλής της σταθερότητας, της συνοχής των κοινωνιών τους και του πολιτικοοικονομικού τους συστήματος. Υπό αυτό το πρίσμα αναδύονται τυχόν κοινές ανησυχίες, μέθοδοι λογοκρισίας και συγκλίσεις μεταξύ δημοκρατικών και αυταρχικών καθεστώτων στο βωμό της διατήρησης της εξουσίας και των οικονομικών ελίτ. Τέλος, το σύγγραμμα αυτό ερευνά τον τρόπο κάλυψης της κοινωνικής εξέγερσης στην Τουρκία, την άνοιξη του 2013, κατά της Κυβέρνησης Ερντογάν και με αφορμή την ανάπλαση ενός πάρκου, προκειμένου να διαπιστωθεί σε ποιο βαθμό η τούρκικη Κυβέρνηση έκανε χρήση λογοκριτικών μεθόδων στα εγχώρια ΜΜΕ. Εξάλλου, για να εξαχθούν ασφαλή συμπεράσματα, ερευνώνται ξένα ΜΜΕ σχετικώς με τον τρόπο που εκείνα κάλυψαν την κοινωνική εξέγερση, ως εξωτερικοί και «ψυχροί» παρατηρητές των γεγονότων.
description: This Master Thesis seek to adumbrate the internet control politics, adopted by a wide variety of regimes, from democratic to authoritarian, focusing on their existing, or impending, legislation. Along with the main goal, this survey attempts to detect the motives which urge governments constrain internet’s free flow of information and content. Furthermore, the methods of barrages’ implementation, in each case separately, has been examined, as long as their implication on violators. Moreover, this thesis seeks whether internet is perceived as a threat for the political, social and economical cohesion of states and their stability, by governments. Under this perspective, common “worries”, censorship methods and convergence among democratic and authoritarian regimes, emerge, so that the elites hold onto power. Finally, this Master Thesis examines how Gezi Park case (spring 2013), in Instabul, was covered by the media, inside and outside Turkey, when social unrest has been provoked due to the renovation of the park.
Detailed comparison of LIGO and Virgo Inspiral Pipelines in Preparation for a Joint Search
Creators: name: Beauville, F.
name: Bizouard, M. -A.
name: Blackburn, L.
name: Bosi, L.
name: Brocco, L.
name: Brown, D.
name: Buskulic, D.
name: Cavalier, F.
name: Chatterji, S.
name: Christensen, N.
name: Clapson, A. -C.
name: Fairhurst, S.
name: Grosjean, D.
name: Guidi, G.
name: Hello, P.
name: Heng, S.
name: Hewitson, M.
name: Katsavounidis, E.
name: Klimenko, S.
name: Knight, M.
name: Lazzarini, A.
name: Leroy, N.
name: Marion, F.
name: Markowitz, J.
name: Melachrinos, C.
name: Mours, B.
name: Ricci, F.
name: Viceré, A.
name: Yakushin, I.
name: Zanolin, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Presented in this paper is a detailed and direct comparison of the LIGO and Virgo binary neutron star detection pipelines. In order to test the search programs, numerous inspiral signals were added to 24 hours of simulated detector data. The efficiencies of the different pipelines were tested, and found to be comparable. Parameter estimation routines were also tested. We demonstrate that there are definite benefits to be had if LIGO and Virgo conduct a joint coincident analysis; these advantages include increased detection efficiency and the providing of source sky location information.
description: LIGO-Virgo Working Group. Submitted to Physical Review D
On the uniqueness of solutions to the Gross-Pitaevskii hierarchy
Creators: name: Klainerman, Sergiu
name: Machedon, Matei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give a new proof of uniqueness of solutions to the Gross-Pitaevskii hierarchy, first established by Erdos, Schlein and Yau, in a different space, based on space-time estimates.
Experiments on quantum causality
Creators: name: Goswami, K.
name: Romero, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum causality extends the conventional notion of fixed causal structure by allowing channels and operations to act in an indefinite causal order. The importance of such an indefinite causal order ranges from the foundational---e.g. towards a theory of quantum gravity---to the applied---e.g. for advantages in communication and computation. In this review, we will walk through the basic theory of indefinite causal order and focus on experiments that rely on a physically realisable indefinite causal ordered process---the quantum switch.
Factor structure and clinical applicability of new semantic tasks in Alzheimer’s disease and aphasia
Creators: name: Luotonen, Ida
name: Karrasch, Mira
name: Korpilahti, Pirjo
name: Renvall, Kati
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Neuroscience
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Semantic tasks are frequently used when examining language functions in patients with acquired disorders such as Alzheimer’s disease (AD) and aphasia. Little is known about the possible covariation between different types of tasks or their factor structure in healthy adults. Additionally, few studies have examined semantic task performances in different patient groups. The aims of this data-driven study were to examine the factor structure in a wide range of semantic tasks in healthy older adults, the possible differences in factor variables between healthy controls, patients with AD and patients with stroke aphasia, as well as the clinical applicability of tasks in differentiating the two patient groups from controls. Participants included 59 healthy older adults, 13 patients with AD and 14 patients with aphasia. The results indicated a four-factor solution for the semantic task variables: (1) the Semantic association factor, (2) the Time factor, (3) the Verbal factor and (4) the Synonym factor. The Verbal factor was the only distinguishing factor between the two patient groups. Three factors reliably discriminated between the controls and the AD patients, and the Verbal factor reliably discriminated between the controls and the aphasia patients. In addition, a few single task variables showed outstanding discrimination for both patient groups. This study supports the notions of semantic tasks tapping into more than one cognitive subcomponent and a more general semantic impairment in AD than in aphasia. In clinical assessment, choosing appropriate semantic tasks is crucial in order to reliably detect the characteristics of the impairment.
The algebraic classification of nilpotent algebras
Creators: name: Kaygorodov, Ivan
name: Khrypchenko, Mykola
name: Lopes, Samuel A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We give the complete algebraic classification of all complex 4-dimensional nilpotent algebras. The final list has 234 (parametric families of) isomorphism classes of algebras, 66 of which are new in the literature.
description: arXiv admin note: text overlap with arXiv:2006.00734, arXiv:2001.00253
Αξιολόγηση μαθησιακών χαρακτηριστικών μαθητών δημοτικού σχολείου με δυσκολίες μάθησης
Creators: name: Μπάρμπας, Γεώργιος
name: Τζουριάδου, Μαρία
name: Γιατράκου, Ανδρομάχη
name: Δαραής, Κωνσταντίνος
name: Λαζοπούλου, Ευθυμία
name: Ρόμπα, Μαρία
name: Σμοκοβίτου, Νάντια
name: Ψαθάς, Σπύρος
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 2015

description: A crucial problem education faces in recent years is the assessment and treatment of low achievers who are seen either as students with special needs or as low achievers. Although trans-disciplinary assessment is essen¬tial for the class placement of these children and for the curriculum to be followed, most times children are treated with consideration only to their learning achievement, which leads to partial treatment of their actual needs. The research hypothesis was that irrelevant of class placement and cate¬gorization low achievers have common learning and behavior characteris¬tics such as strategies, motivation, etc. The research aimed to detect these characteristics in two categories of children: students’ learning disabilities and low achievers without developmental disorders. The research sample consisted of 117 fifth and sixth graders in Central Macedonia, equally allocated in each category. Data was collected with the help the LDDI questionnaire, class observation, or diagnostic tests in lan¬guage and mathematics Findings came to verify the hypothesis of the research and to reinforce the view that the learning characteristics of students seem to relate with the teaching methods and with the pedagogic context of the class practice.
description: Παιδαγωγική Επιθεώρηση, Vol. 42 (2006)
Capacities of Gaussian Quantum Channels with Passive Environment Assistance
Creators: name: Oskouei, Samad Khabbazi
name: Mancini, Stefano
name: Winter, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Passive environment assisted communication takes place via a quantum channel modeled as a unitary interaction between the information carrying system and an environment, where the latter is controlled by a passive helper, who can set its initial state such as to assist sender and receiver, but not help actively by adjusting her behaviour depending on the message. Here we investigate the information transmission capabilities in this framework by considering Gaussian unitaries acting on Bosonic systems. We consider both quantum communication and classical communication with helper, as well as classical communication with free classical coordination between sender and helper (conferencing encoders). Concerning quantum communication, we prove general coding theorems with and without energy constraints, yielding multi-letter (regularized) expressions. In the search for cases where the capacity formula is computable, we look for Gaussian unitaries that are universally degradable or anti-degradable. However, we show that no Gaussian unitary yields either a degradable or anti-degradable channel for all environment states. On the other hand, restricting to Gaussian environment states, results in universally degradable unitaries, for which we thus can give single-letter quantum capacity formulas. Concerning classical communication, we prove a general coding theorem for the classical capacity under and energy constraint, given by a multi-letter expression. Furthermore, we derive an uncertainty-type relation between the classical capacities of the sender and the helper, helped respectively by the other party, showing a lower bound on the sum of the two capacities. Then, this is used to lower bound the classical information transmission rate in the scenario of classical communication between sender and helper.
description: 36 pages, 2 figures
The Integral Field Unit for the Echellette Spectrograph and Imager at Keck II
Creators: name: Sheinis, A. I.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the design, development and commissioning of an Integral Field Unit (IFU) that has been built for the Echellette Spectrograph and Imager (ESI) at the W.M. Keck Observatory. This image slicer--based IFU, which was commissioned in the spring of 2004 covers a contiguous field of 5.65 x 4.0 arcseconds in 5 slices that are 1.13 arcseconds wide. The IFU passes a spectral range of 0.39-1.1 um with a throughput of between 45 % and 60 % depending on wavelength and field position. The IFU head resides in an ESI slit mask holder, so that ESI may be converted to the IFU mode remotely by selecting the appropriate slit mask position. This IFU is the first of a family of designs for the spectrograph, providing a range of field-coverages and dispersions. In addition, we present the first-light science imaging and spectroscopic observations of RXJ1131-123, a low-redshift, lensed quasar. These observations show the 4 spectra of the lens and lensed-images captured in a single pointing.
description: 15 pges, 8 figures, presented at SPIE Astronomical Telescopes and Instrumentation, 24 - 31 May 2006, Orlando, Florida USA
Cardiovascular deconditioning during long-term spaceflight through multiscale modeling
Creators: name: Gallo, Caterina
name: Ridolfi, Luca
name: Scarsoglio, Stefania
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Human spaceflight has been fascinating man for centuries, representing the intangible need to explore the unknown, challenge new frontiers, advance technology and push scientific boundaries further. A key area of importance is cardiovascular deconditioning, that is, the collection of hemodynamic changes - from blood volume shift and reduction to altered cardiac function - induced by sustained presence in microgravity. A thorough grasp of the 0G adjustment point per se is important from a physiological viewpoint and fundamental for astronauts' safety and physical capability on long spaceflights. However, hemodynamic details of cardiovascular deconditioning are incomplete, inconsistent and poorly measured to date; thus a computational approach can be quite valuable. We present a validated 1D-0D multiscale model to study the cardiovascular response to long-term 0G spaceflight in comparison to the 1G supine reference condition. Cardiac work, oxygen consumption and contractility indexes, as well as central mean and pulse pressures were reduced, augmenting the cardiac deconditioning scenario. Exercise tolerance of a spaceflight traveler was found to be comparable to an untrained person with a sedentary lifestyle. At the capillary-venous level significant waveform alterations were observed which can modify the regular perfusion and average nutrient supply at the cellular level. The present study suggests special attention should be paid to future long spaceflights which demand prompt physical capacity at the time of restoration of partial gravity (e.g., Moon/Mars landing). Since spaceflight deconditioning has features similar to accelerated aging understanding deconditioning mechanisms in microgravity are also relevant to the understanding of aging physiology on Earth.
description: 14 pages, 5 tables, 5 figures
Development of a generic version of the multiple errands test for severe acquired brain injuries
Creators: name: Basagni, Benedetta
name: Bosetti, Sara
name: Cantelli, Sabrina
name: Ermon, Silvia
name: Rovere, Federica
name: Navarrete, Eduardo
name: De Tanti, Antonio
name: Saviola, Donatella
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Mental Health

description: Impairment of executive functions is a frequent and disabling consequence of brain injury. In 1991, Shallice and Burgess elaborated the Multiple Errand Test (MET) to assess everyday troubles associated with this impairment. Our first aim was to create a generic version of MET (MET-G) readily adaptable to different settings and for retesting. The second aim was to validate the revised version to detect executive impairment in individuals with severe ABI. An inter-professional team of experts in neurorehabilitation created a revised version of MET. Twenty-one patients with sABI (severe Acquired Brain Injury) and a control group of 20 neurologically healthy subjects, took part in the testing of MET-G. MET-G clearly distinguished people with sABI from healthy controls based on Total error score, task completion, and rule breaking. The test showed good inter-rater reliability and internal consistency. The new, generic version of MET was able to differentiate adults with sABI from controls and proved to be a good tool for evaluating executive functions in these patients in daily-life contexts. Indications on how to adapt the test to different contexts and different scoring modalities are provided.
Additional file 1 of Metformin use and respiratory outcomes in asthma-COPD overlap
Creators: name: Tianshi David Wu
name: Fawzy, Ashraf
name: Kinney, Gregory L.
name: Bon, Jessica
name: Maniraj Neupane
name: Vickram Tejwani
name: Hansel, Nadia N.
name: Wise, Robert A.
name: Nirupama Putcha
name: McCormack, Meredith C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Table S1. Baseline characteristics of included participants by asthma-COPD overlap status (n=3969). Table S2. Adjusted mean difference (95% confidence interval) in change of secondary outcomes from baseline to 5-year follow-up between metformin users and non-users. Table S3. Adjusted mean difference (95% confidence interval) comparing metformin users to non-users for cross-sectional secondary outcomes including participants without follow-up data. Figure S1. STROBE diagram of cohort derivation. Figure S2. Incidence rate ratio (95% confidence interval) comparing metformin users to non-users for exacerbations stratified by alternative alternative asthma-COPD overlap (ACO) definitions (n=3969)