cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Assessment of the evolution of Rett syndrome-related proteins disordered regions and the implications of their point mutations
Creators: name: Fahmi, Muhamad
name: Yasui,
name: Kubota, Yukihiko
name: Ito, Masahiro
Publisher: name: F1000 Research Limited
Year: 2019

description: While mutations in intrinsically disordered regions (IDRs)-containing proteins are often associated with diseases, IDRs generally evolve more rapidly than that of ordered regions. In this study, we want to determine how IDRs are involved in the development of diseases. We examined the relationship between point mutation of pathogenic Rett syndrome (RTT) that is well-documented in the RettBASE and the evolution of structural order-disorder of three RTT-causative proteins that contain IDRs. PAthogenic RTT are predominantly associated with the alteration in the domain and slowly evolved regions which are commonly structured for FOXG1 and CDKL5. While the domain has intrinsically disordered region (intrinsically disordered; domain IDD), the ability to form intramolecular contacts with other disordered regions could also promote the development of the pathogenic RTT by alteration in the rapidly evolved residues beyond the domain region in MeCP2.
Modeling and performance analysis of in-building distributed WLAN using CSMA with spread spectrum signaling
Creators: name: Tang, Lawrence
Publisher: name: University of British Columbia
Year: 2009

description: In recent years, application of wireless technology in local area networks has become prominent due to its flexibility and ability to support portable terminals. This thesis considers a wireless local area network in a room with multiple stations accessing multiple radio bridges which are interconnected by a backbone network. Direct sequence spread spectrum signaling with a common spreading code and carrier sensing multiple access are employed. This system is analyzed with respect to uplink performance only as well as uplink/downlink performance. The 1-persistent carrier sensing multiple access protocol performs well in the uplink model. However, it does not yield satisfactory results in the uplink/downlink model. In particular, the 1-persistent protocol is unable to balance uplink/downlink channel access, giving the uplink traffic much higher throughput than downlink traffic. This unbalanced channel access problem is solved by using a dual persistency carrier sensing protocol, which is shown to balance uplink and downlink throughput. The relationships between packet duplications, hidden terminals and multiple packet receptions in the distributed wireless local network architecture are illustrated via eight system parameters. In particular, the number of radio bridges, the carrier sensing threshold and the type of power control method have the greatest influence on the system performance. These three parameters directly affect packet duplications, multiple packet receptions, the number of hidden terminals in the system, and the received signal-to-noise ratio and interferenceto- signal ratio at each receiver. In both the uplink only and uplink/downlink models, a higher number of radio bridges is found to be desirable since it allows multiple packet receptions. A moderate carrier sensing threshold is preferred since a low value causes packet duplications whereas a high value causes the system to saturate. Power-controlled transmission is desirable in terms of fairness because it equalizes capturing probabilities with respect to stations' distances from the radio bridges. Hidden terminals, which are detrimental to conventional carrier sensing systems, have a less detrimental effect in distributed wireless local area networks with multiple radio bridges due to the possibility of multiple packet receptions.
Magnetic field in relativistic heavy ion collisions: testing the classical approximation
Creators: name: Danhoni, I.
name: Navarra, F. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is believed that in non-central relativistic heavy ion collisions a very strong magnetic field is formed. There are several studies of the effects of this field, where $\vec{B}$ is calculated with the expressions of classical electrodynamics. A quantum field may be approximated by a classical one when the number of field quanta in each field mode is sufficiently high. This may happen if the field sources are intense enough. In heavy ion physics the validity of the classical treatment was not investigated. In this work we propose a test of the quality of the classical approximation. We calculate an observable quantity using the classical magnetic field and also using photons as input. If the results of both approaches coincide, this will be an indication that the classical approximation is valid. More precisely, we focus on the process in which a nucleon is converted into a delta resonance, which then decays into another nucleon and a pion, i.e., $ N \to Δ\to N' π$. In ultra-peripheral relativistic heavy ion collisions this conversion can be induced by the classical magnetic field of one the ions acting on the other ion. Alternatively, we can replace the classical magnetic field by a flux of equivalent photons, which are absorbed by the target nucleons. We calculate the cross sections in these two independent ways and find that they differ from each other by $\simeq 10$ \% in the considered collision energy range. This suggests that the two formalisms are equivalent and that the classical approximation for the magnetic field is reasonable.
description: 6 pages, 5 figures. arXiv admin note: text overlap with arXiv:1910.00711
Experience of bioinformatics training at a biomedical institute
Creators: name: Doyle, Maria A.
name: Legaie, Roxane
name: Yeung, Miriam
name: Lupat, Richard
name: Christie, Liz
name: Ma, David
name: Trigos, Anna
name: Team, Peter Mac Data Science Training
Publisher: name: F1000 Research Limited
Year: 2019

description: With the increasing amounts of data produced in biomedical research, training of researchers in data skills is needed and in high demand. In 2018 we circulated an Expression of Interest around our institute to assess demand for acquiring data skills and received >100 responses. In response to the demand, we've provided training courses in R, Python and Galaxy and places have been filled in minutes. For the teaching content, we are making an effort to use material by others in the community where possible, and also adapting content to what we believe is most useful to our researchers. We've used a format of multiple short sessions, typically weekly, lasting a couple of hours. Short session format was used, rather than full day or multi-day sessions, to give attendees time to digest the information between sessions and to try to integrate the teaching more easily into schedules for both attendees, trainers and helpers. In the feedback form we ask whether the attendees would prefer a longer (day or multi-day) format and so far all attendees have said they prefer a short session format.
How to calculate correlation functions of Heisenberg chains
Creators: name: Hagemans, Rob
name: Caux, Jean-Sébastien
name: Maillet, Jean Michel
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We describe a method for calculating dynamical spin-spin correlation functions in the finite isotropic and anisotropic antiferromagnetic Heisenberg models. Our method is able to produce results with high accuracy over the full parameter space.
description: Proceedings of the "Tenth Training Course in the Physics of Correlated Electron Systems and High-Tc Superconductors", Salerno, Oct 2005
The Dirichlet isospectral problem for trapezoids
Creators: name: Hezari, Hamid
name: Lu, Zhiqin
name: Rowlett, Julie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We show that non-obtuse trapezoids are uniquely determined by their Dirichlet Laplace spectrum. This extends our previous result, which was only concerned with the Neumann Laplace spectrum.
Είναι αποτελεσματική η διδασκαλία του ''σκέπτομαι και γράφω'';
Creators: name: Παπασταμάτης, Αδαμάντιος Ι.
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: This article briefly presents the main methological shortcomings of leaching children's writing in the Greek primary school and makes the following recommendations for overcoming these shortcomings: a) Tasks from children's personal experiences, b) more to children, e) redrafting children's work, f) assessment of children's work, g) publishing children's work, and h) reorganization of teachers training and retraining in teaching writing.
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
: Έρευνα δηλωμένων προτιμήσεων για την χρήση μοτοσυκλέτας-ταξί από τον φοιτητικό πληθυσμό του Α.Π.Θ.
Creators: name: Γραμμένος, Χρήστος Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Έρευνα δηλωμένων προτιμήσεων
Μοτοσυκλέτα-ταξί
Φοιτητικός πληθυσμός Α.Π.Θ.
Stated-preference survey
Motorcycle-taxi
Students of Aristotle University of Thessaloniki

description: Ο βασικός στόχος της παρούσας εργασίας είναι να εκτιμηθεί η θέληση και η προθυμία των μετακινούμενων φοιτητών της πόλης της Θεσσαλονίκης να χρησιμοποιήσουν ένα νέο εναλλακτικό μέσο μετακίνησης. Το εναλλακτικό αυτό μέσο είναι το δίκυκλο ταξί και η έρευνα των προτιμήσεων των φοιτητών πραγματοποιήθηκε με την χρήση ενός ερωτηματολογίου και καρτών δηλωμένων προτιμήσεων που παρουσιάζονταν στους φοιτητές μέσω ενός «παιγνίου». Τα αποτελέσματα καταγράφηκαν με την βοήθεια της περιγραφικής στατιστικής και κατηγοριοποιήθηκαν ώστε να είναι εύκολα διαχειρίσιμα. Στην συνέχεια έγινε επεξεργασία των δεδομένων με την χρήση υπολογιστικού προγράμματος και την εφαρμογή της επαγωγικής στατιστικής. Όλη η διαδικασία είχε ως σκοπό την εξαγωγή συμπερασμάτων για τις προτιμήσεις των φοιτητών και το κατά πόσο αυτό το εναλλακτικό μέσο θα μπορούσε να είναι επιτυχημένο στην Θεσσαλονίκη και κατ’επέκταση σε κάθε πόλη.
description: The main objective of this thesis is to assess the willingness and readiness of college students in the city of Thessaloniki to use a new alternative type of transportation. This alternative mean is the motorcycle taxi and the student preferences survey was conducted using a questionnaire and stated-preferences cards which were presented to students through a "game." The results were recorded through descriptive statistics and categorized as to be easily manageable. Then the data were processed with the use of computer programs and inferential statistics. The whole process was designed to draw conclusions about the preferences of students and whether this alternative mean of transportation could be successful in Thessaloniki and in each city of interest.
Experience of Galaxy training at a biomedical Institute
Creators: name: Doyle, Maria A.
name: Lupat, Richard
Publisher: name: F1000 Research Limited
Year: 2019

description: With the increasing amounts of data produced in biomedical research, researchers need training in data skills. However, it is not clear what is the best way to help researchers acquire these skills to produce useful results. Galaxy provides an easier entry point to analysis than command line, R or Python and can be a quicker route to generate results. At Peter Mac, RNA-seq is the most popular data type and in 2018 we started running courses to introduce cancer researchers to Galaxy and RNA-seq analysis. The training has been given as short 2-3 hr sessions using Galaxy Training Network material (https://galaxyproject.github.io/training-material/) and UseGalaxy.eu's Training Infrastructure as a Service (https://galaxyproject.eu/tiaas.html). The courses have been well received and we are trying to iteratively improve what we deliver using the feedback and lessons learned. We will discuss our experience, what we have learnt so far, and future aims, such as creating Galaxy training material and courses for other popular applications at our institute, including 3' RNA-seq, single-cell RNA-seq and CRISPR.
Schur Q-polynomials, multiple hypergeometric series and enumeration of marked shifted tableaux
Creators: name: Rosengren, Hjalmar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Combinatorics (math.CO)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 05E05, 05E10, 33D52

description: We study Schur Q-polynomials evaluated on a geometric progression, or equivalently q-enumeration of marked shifted tableaux, seeking explicit formulas that remain regular at q=1. We obtain several such expressions as multiple basic hypergeometric series, and as determinants and pfaffians of continuous q-ultraspherical or continuous q-Jacobi polynomials. As special cases, we obtain simple closed formulas for staircase-type partitions.
description: 34 pages; Appendix added, several minor improvements of previous version
Ανάπτυξη Συστήματος για τον Έλεγχο Εγκυρότητας Προβλημάτων Σχεδιασμού μέσω Υπηρεσιών Ιστού
Creators: name: Συμεωνίδης, Μωυσής Σάββα
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Προβλήματα Σχεδιασμού
Υπηρεσίες Ιστού
Έλεγχος Εγκυρότητας
Planning Problems
Web Services
Validating

description: Αντικείμενο της εργασίας είναι η ανάπτυξη ενός συστήματος για τον έλεγχο επιλυσιμότητας προβλημάτων σχεδιασμού με την χρήση υπηρεσιών ιστού. Καθώς έχουν δημιουργηθεί και εκτενώς εξεταστεί διάφορα εργαλεία για την συγγραφή προβλημάτων σχεδιασμού γίνεται φανερό ότι εργαλεία που βοηθούν στον έλεγχο και την εύρεση λογικών σφαλμάτων των παραγόμενων προβλημάτων αποτελούν ένα ξεχωριστό πεδίο έρευνας στη περιοχή αυτή. Πιο συγκεκριμένα, με τις υπηρεσίες ιστού που δημιουργήσαμε καταφέραμε αρχικά να ανακαλύψουμε αν κάποιο πρόβλημα σχεδιασμού είναι επιλύσιμο και ως δεύτερο βήμα έγινε προσπάθεια να δώσουμε στο χρήστη την αιτία ή τις αιτίες που το πρόβλημα δεν είναι επιλύσιμο. Επιπρόσθετα, έγινε η σύνδεση του εργαλείου μας με το πρόγραμμα Vleppo που είναι ένα γραφικό περιβάλλον σχεδιασμού. Τέλος, πιστοποιήσαμε τα αποτελέσματα της ευχρηστίας του προγράμματος βάση πραγματικού προβλήματος που κλήθηκαν να λύσουν φοιτητές στα πλαίσια του μαθήματος της Τεχνητής Νοημοσύνης.
description: The main objective of this thesis is the development of a system that solves planning problems through the aid of a stand-alone web service. Since most planning-related tools are also well-tested, this is an indication that tools that focus on easing the process of writing and debugging planning problems are becoming another field of interest. To be more precise, through our web services we managed to determine if a planning problem is solvable and later present to the user of the service the cause (or causes) of the logical problem. Moreover, the service provides information to the already-existing graphical tool Vleppo. Finally, we validated our claims of ease of use against the results of survey that was conducted with the help of undergraduate students in the context of the Artifical Intelligence.
Covert Embodied Choice: Decision-Making and the Limits of Privacy Under Biometric Surveillance
Creators: name: Gordon, Jeremy
name: Curran, Max
name: Chuang, John
name: Cheshire, Coye
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Algorithms engineered to leverage rich behavioral and biometric data to predict individual attributes and actions continue to permeate public and private life. A fundamental risk may emerge from misconceptions about the sensitivity of such data, as well as the agency of individuals to protect their privacy when fine-grained (and possibly involuntary) behavior is tracked. In this work, we examine how individuals adjust their behavior when incentivized to avoid the algorithmic prediction of their intent. We present results from a virtual reality task in which gaze, movement, and other physiological signals are tracked. Participants are asked to decide which card to select without an algorithmic adversary anticipating their choice. We find that while participants use a variety of strategies, data collected remains highly predictive of choice (80% accuracy). Additionally, a significant portion of participants became more predictable despite efforts to obfuscate, possibly indicating mistaken priors about the dynamics of algorithmic prediction.
description: 12 pages. To be presented at CHI 2021
Τα αναλυτικά προγράμματα σε μια μετανεοτερική εποχή
Creators: name: Ιωαννίδου-Κουτσελίνη, Μαίρη
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: This article examines curriculum as pedagogical ideological - political and sociological text and supports the view that the new ideological and institutional frameworks of our era prefigure a meta-modern paradigm for curriculum based on the modernization of modernity. Meta-modernity is defined as the reaction against the limiting rule of rationalism; the expert opinion which lacks a philosophical spirit, the technocratic -instrumental curricula and de-personalization of contemporary public education. Problems of the applied curriculum arc discussed and the enlargement of the participation of the teacher in the decision making procedure is supported.
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
Voice transport, capacity and signaling improvements for integrated wireless personal communications over metropolitan area networks
Creators: name: Cobbold, Christopher M.
Publisher: name: University of British Columbia
Year: 2009

description: Networks for Personal Communication Services (PCS) are currently being deployed in various parts of the world. A wide range of wireless voice and data service offerings is promised, and consumer participation is expected to be high. The IEEE 802.6 Metropolitan Area Network (MAN) has previously been proposed to provide for the distributed control of such networks. This work continues investigations in call transport on the MAN using pre-arbitrated (PA) bandwidth, and for signaling using queue arbitrated (QA) bandwidth. A scheme for the transport of low bit-rate encoded voice, which is characteristic of mobile voice coders, is proposed that attempts to balance packetization delay with network complexity. Capacity gains are realized with PA access by locating a gateway, which provides interconnection to the Public Switched Telephone Network (PSTN), at the Head of Bus (HOB) in a closed-bus MAN. A two-dimensional Markov Chain and resulting blocking probabilities are derived which result in the determination of the Erlang and subscriber capacity of a Personal Communications Network (PCN) based on a single MAN. This provides the basis for extracting reductions in signaling delays on the MAN by applying the Preemptive Priority Mechanism (PPM), a recently proposed improvement to the MAN media access control protocol. In summary, improvements to the PA and QA transport mechanisms, as applied to PCNs, are developed and assessed. Architectures of single and multiple MAN-based PCNs are presented in the context of the Intelligent Network (IN). The IEEE 802.6 MAN is viewed as being an evolutionary step towards the introduction of the Broadband Integrated Services Digital Network (B-ISDN). Issues arising from the migration of such architectures towards Asynchronous Transfer Mode (ATM) networks are considered in depth.
Cosmological bounds on dark matter-neutrino interactions
Creators: name: Mangano, Gianpiero
name: Melchiorri, Alessandro
name: Serra, Paolo
name: Cooray, Asantha
name: Kamionkowski, Marc
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the cosmological effects of a neutrino interaction with cold dark matter. We postulate a neutrino that interacts with a ``neutrino interacting dark matter'' (NIDM) particle with an elastic-scattering cross section that either decreases with temperature as $T^2$ or remains constant with temperature. The neutrino--dark-matter interaction results in a neutrino--dark-matter fluid with pressure, and this pressure results in diffusion-damped oscillations in the matter power spectrum, analogous to the acoustic oscillations in the baryon-photon fluid. We discuss the bounds from the Sloan Digital Sky Survey on the NIDM opacity (ratio of cross section to NIDM-particle mass) and compare with the constraint from observation of neutrinos from supernova 1987A. If only a fraction of the dark matter interacts with neutrinos, then NIDM oscillations may affect current cosmological constraints from measurements of galaxy clustering. We discuss how detection of NIDM oscillations would suggest a particle-antiparticle asymmetry in the dark-matter sector.
Comparative experimental study of local mixing of active and passive scalars in turbulent thermal convection
Creators: name: Zhou, Quan
name: Xia, Ke-Qing
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We investigate experimentally the statistical properties of active and passive scalar fields in turbulent Rayleigh-Bénard convection in water, at $Ra\sim10^{10}$. Both the local concentration of fluorescence dye and the local temperature are measured near the sidewall of a rectangular cell. It is found that, although they are advected by the same turbulent flow, the two scalars distribute differently. This difference is twofold, i.e. both the quantities themselves and their small-scale increments have different distributions. Our results show that there is a certain buoyant scale based on time domain, i.e. the Bolgiano time scale $t_B$, above which buoyancy effects are significant. Above $t_B$, temperature is active and is found to be more intermittent than concentration, which is passive. This suggests that the active scalar possesses a higher level of intermittency in turbulent thermal convection. It is further found that the mixing of both scalar fields are isotropic for scales larger than $t_B$ even though buoyancy acts on the fluid in the vertical direction. Below $t_B$, temperature is passive and is found to be more anisotropic than concentration. But this higher degree of anisotropy is attributed to the higher diffusivity of temperature over that of concentration. From the simultaneous measurements of temperature and concentration, it is shown that two scalars have similar autocorrelation functions and there is a strong and positive correlation between them.
description: 13 pages and 12 figures
Coupled computation of meshing and bearings stiffnesses : effect on radiated gearbox noise
Creators: name: Mayeux, François
name: Perret-Liaudet, Joël
name: Rigaud, Emmanuel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: This study focus on the acoustical behavior of gearbox induced by the static transmission error under load (STE). An original method is developed allowing to compute simultaneously STE, meshing and bearings stiffnesses. These characteristics mainly govern the vibrational and the acoustical behaviors of the geared system. The proposed procedure is based on two computational methods allowing to calculate the STE and the bearing equilibrium which are integrated in a coupled computational procedure. The technique has been implemented to treat an illustrating example and compared to standard uncoupled approach. Comparative results concern the STE, meshing stiffness, bearings stiffnesses, shafts misalignments, critical eigenmodes and associated critical running speeds, housing vibratory response and radiated noise.
Electrostatic Modulation of the Superfluid Density in a Ultrathin La2-xSrxCuO4 Film
Creators: name: Rufenacht, A.
name: Locquet, J. -P.
name: Fompeyrine, J.
name: Caimi, D.
name: Martinoli, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By capacitively charging an underdoped ultrathin La2-xSrxCuO4 film with an electric field applied across a gate insulator with a high dielectric constant, relative changes of the areal superfluid density n_{s\Box}$ of unprecedented strength were observed in measurements of the film kinetic inductance. Although $n_{s\Box}$ appears to be substantially reduced by disorder, the data provide, for the first time on the same sample, direct compelling evidence for the Uemura relation $T_{c} \propto n_{s\Box}(T=0)$ in the underdoped regime of copper-oxide superconductors.
description: 4 pages, 3 figures
„Du, geliebter Leser, erbarme dich zugleich unser“ – Der „Hillinus-Codex“ (Cod. 12) als mehrschichtiges Erinnerungsobjekt
Creators: name: Vennebusch, Jochen Hermann
Publisher: name: Institut für Realienkunde des Mittelalters und der frühen Neuzeit
Year: 2019
Subjects: Illuminierte Handschrift
Mittelalter
Buchmalerei
Reichenau
Stiftung
Dedikationsbilder
Hillinus
Middle Ages
Illuminated Manuscripts
Dedication
Art History

description: Der in der Kölner Erzbischöflichen Diözesan- und Dombibliothek aufbewahrte „Hillinus-Codex“ zählt zu den bedeutendsten Werken der ottonischen Buchmalerei. Die im frühen 11. Jahrhundert von einem Reichenauer Buchmaler und einem Seeoner Schreiber, seinem Bruder, vermutlich in Köln geschaffene Handschrift gibt durch einen Schreibereintrag und einen umfangreichen Widmungstext wichtige Hinweise über den Entstehungskontext des Manuskripts und die Hintergründe der Stiftung des Evangeliars. Die Dedikationsminiatur verbildlicht die Widmung des Codex durch den Auftraggeber, den Kölner Domherrn Hillinus, an den heiligen Petrus. Darüber hinaus haben sich auch die Buchkünstler in das Bildprogramm der Handschrift „eingeschlichen“ und stellen selbstbewusst ihren Beitrag zur materiellen Überlieferung der Offenbarung dar. The Hillinus-Codex“, now preserved in the Archbishop's Diocesan and Cathedral Library of Cologne is one of the most important Ottonian manuscripts. The Gospel Book was produced by a book painter from Reichenau Abbey and by his brother, a scribe from Seeon Abbey, presumably in Cologne at the beginning of the 11th century. Particularly an artists’ entry as well as an inscription of dedication are integrated into the manuscript and provide some information on the production of the Gospel Book and on the background of Hillinus’ dedication. Furthermore a dedication miniature visualizes the canon’s donation to Saint Peter. Additionally the artists depicted themselves in a miniature and stressed their contribution to the material transmission of the divine revelation.
description: MEMO Medieval and Early Modern Material Culture Online; Volume 2019 (4); Seitenzahl: x; ISSN: 2523-2932
Ο εγωκεντρισμός του παιδιού σχολικής ηλικίας: ένα λησμονησμένο αναπτυξιακό φαινόμενο
Creators: name: Γαλανάκη, Ευαγγελία
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: The aim of this article is to describe the concept, the source, the characteristics and the main manifestations of a rather forgotten issue in child development, namely egocentrism in school-age children, according to David Elkind's theory. Egocenttism takes on a unique form in each stage of cognitive development and constitutes a negative but necessary by-product of each stage. First, we describe briefly the concept, the source and the decline of egocenutrism in general, as well as those of the sensorimotor and the preoperational egocentrism. Then, the association between egocentrism in school-age children and the concrete operational abilities is discussed. The "assumptive realities", that is the inability to distinguish between the products of thought and the perceptual data, is analysed as the main characteristic of concrete operational egocentrism. This form of egocentrism manifests itself as a differentiation failure between the transient and the abiding rules, between the subjective and the objective rules, and between the particular and the universal rules. With the emergence of formal operational abilities, children
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
Ising, Schelling and Self-Organising Segregation
Creators: name: Stauffer, D.
name: Solomon, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The similarities between phase separation in physics and residential segregation by preference in the Schelling model of 1971 are reviewed. Also, new computer simulations of asymmetric interactions different from the usual Ising model are presented, showing spontaneous magnetisation (= self-organising segregation) and in one case a sharp phase transition.
description: 15 pages including 7 figures
Language Model as an Annotator: Unsupervised Context-aware Quality Phrase Generation
Creators: name: Zhang, Zhihao
name: Zuo, Yuan
name: Lin, Chenghua
name: Wu, Junjie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Phrase mining is a fundamental text mining task that aims to identify quality phrases from context. Nevertheless, the scarcity of extensive gold labels datasets, demanding substantial annotation efforts from experts, renders this task exceptionally challenging. Furthermore, the emerging, infrequent, and domain-specific nature of quality phrases presents further challenges in dealing with this task. In this paper, we propose LMPhrase, a novel unsupervised context-aware quality phrase mining framework built upon large pre-trained language models (LMs). Specifically, we first mine quality phrases as silver labels by employing a parameter-free probing technique called Perturbed Masking on the pre-trained language model BERT (coined as Annotator). In contrast to typical statistic-based or distantly-supervised methods, our silver labels, derived from large pre-trained language models, take into account rich contextual information contained in the LMs. As a result, they bring distinct advantages in preserving informativeness, concordance, and completeness of quality phrases. Secondly, training a discriminative span prediction model heavily relies on massive annotated data and is likely to face the risk of overfitting silver labels. Alternatively, we formalize phrase tagging task as the sequence generation problem by directly fine-tuning on the Sequence-to-Sequence pre-trained language model BART with silver labels (coined as Generator). Finally, we merge the quality phrases from both the Annotator and Generator as the final predictions, considering their complementary nature and distinct characteristics. Extensive experiments show that our LMPhrase consistently outperforms all the existing competitors across two different granularity phrase mining tasks, where each task is tested on two different domain datasets.
Η έννοια της πλάνης στην αρχιτεκτονική τοπίου
Creators: name: Δεδούση, Διονυσία Σπήλιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Πλάνη
Αρχιτεκτονική τοπίου
Αντίληψη
Illusion
Landscape architecture
Perception

description: Η παρούσα μεταπτυχιακή διατριβή διερευνά το πώς απαντάται, πώς εφαρμόζεται και ποιος ο στόχος της πλάνης στην αρχιτεκτονική τοπίου. Η έρευνα που πραγματοποιήθηκε είναι βιβλιογραφική με πηγές από τα πεδία της ψυχολογίας, της αρχιτεκτονικής τοπίου, της χαρτογραφίας και των στρατιωτικών πρακτικών. Η δομή της έρευνας ξεκινά με την παράθεση της έννοιας της πλάνης και τα είδη της, δίνοντας ιδιαίτερη έμφαση στις οπτικές και απτικές πλάνες, οι οποίες αναλύονται στη συνέχεια. Πραγματοποιείται σύντομη ιστορική αναδρομή για τη διερεύνηση της χρήσης της πλάνης στην αρχιτεκτονική και στην τέχνη, σύντομη αναφορά της πλάνης στη χαρτογραφία, η οποία είναι εργαλείο της αρχιτεκτονικής τοπίου και σύντομη αναφορά της στις στρατιωτικές πρακτικές, πεδία από όπου έχει δανειστεί αρχές και εφαρμόζει η αρχιτεκτονική τοπίου. Στα παραδείγματα που παραθέτονται, εξετάζεται πώς οι αρχιτέκτονες τοπίου κάνουν χρήση της πλάνης, με ποιες τεχνικές και υλικά, εμπαίζοντας με την αντίληψη του παρατηρητή και ποιος ο σκοπός τους. Συμπεραίνουμε ότι η πλάνη στην αρχιτεκτονική τοπίου παρουσιάζεται από πολύ παλιά μέχρι σήμερα, ότι η εφαρμογή της ποικίλει ανάλογα με τα σκοπό που εξυπηρετεί και ότι έχει τη σημασία εισαγωγής προοδευτικών προτάσεων, καινοτόμων ιδεών, υπενθυμίζοντας ότι πάντα υπάρχει η επιθυμία για την προσέγγιση ενός οράματος.
description: This master thesis studies how illusions are found and applied in landscape architecture and the purpose of their use. The research is based on literature sources from the fields of psychology, landscape architecture, geosciences and military practices. The thesis begins by analyzing the term of illusion and its types. Particular emphasis is given on optical and tactile illusions. A brief historical review is been conducted in order to investigate the illusion’s use in architecture and art, in cartography, which is a tool for landscape architecture, as well as in military. The practices of illusion in those fields are applied to landscape architecture. The examples of this paper examine how landscape architects use illusions, the techniques and material they use, as well as how and for what reasons they try to deceive the perception of the observer. To conclude, although illusion is a timeless theme in architecture, the implementation varies depending on the designer’s purpose. This process introduces progressive and innovative ideas, highlighting the importance and the desire to approach a vision.
An interactive sequential-decision benchmark from geosteering
Creators: name: Alyaev, Sergey
name: Bratvold, Reidar Brumer
name: Ivanova, Sofija
name: Holsaeter, Andrew
name: Bendiksen, Morten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Systems and Control (eess.SY)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Geosteering workflows are increasingly based on the quantification of subsurface uncertainties during real-time operations. As a consequence operational decision making is becoming both better informed and more complex. This paper presents an experimental web-based decision support system, which can be used to both aid expert decisions under uncertainty or further develop decision optimization algorithms in controlled environment. A user of the system (either human or AI) controls the decisions to steer the well or stop drilling. Whenever a user drills ahead, the system produces simulated measurements along the selected well trajectory which are used to update the uncertainty represented by model realizations using the ensemble Kalman filter. To enable informed decisions the system is equipped with functionality to evaluate the value of the selected trajectory under uncertainty with respect to the objectives of the current experiment. To illustrate the utility of the system as a benchmark, we present the initial experiment, in which we compare the decision skills of geoscientists with those of a recently published automatic decision support algorithm. The experiment and the survey after it showed that most participants were able to use the interface and complete the three test rounds. At the same time, the automated algorithm outperformed 28 out of 29 qualified human participants. Such an experiment is not sufficient to draw conclusions about practical geosteering, but is nevertheless useful for geoscience. First, this communication-by-doing made 76% of respondents more curious about and/or confident in the presented technologies. Second, the system can be further used as a benchmark for sequential decisions under uncertainty. This can accelerate development of algorithms and improve the training for decision making.
description: arXiv admin note: substantial text overlap with arXiv:2005.08916
Τοπικά κινήματα. Το παράδειγμα του αντιμεταλλευτικού κινήματος στη Βορειοανατολική Χαλκιδική.
Creators: name: Τσαντήλα, Φωτεινή Απόστολου
name: Καλφόγλου, Ειρήνη Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: κινήματα
αντιμεταλλευτικό
Σκουριές
movements
anti – mining
Skouries

description: Η παρούσα εργασία πραγματεύεται τη θεματική των σύγχρονων κοινωνικών κινημάτων . Πιο συγκεκριμένα, γίνεται εκτενής αναφορά στα χαρακτηριστικά των σύγχρονων κοινωνικών κινημάτων, τις γενεσιουργούς τους αιτίες, τον τρόπο με τον οποίο κινούνται και τις μορφές διεκδίκησης που εξελίσσουν, καθώς και τον τρόπο που αυτά γίνονται αντιληπτά από τους ανθρώπους γενικότερα αλλά και από τους σχετικούς με το θέμα επιστήμονες. Σε αυτή την προσπάθεια νοηματοδότησής των, προκύπτουν τα θετικά τους στοιχεία που τα διαφοροποιούν από παλαιότερες μορφές κοινωνικής πάλης και τα συνδέουν με ελπιδοφόρες σκέψεις αλλά προκύπτουν και τα μειονεκτήματά τους που τα ωθούν στην πρόωρη αποτυχία τους.Στο δεύτερο μέρος της εργασίας, αναλύεται η περίπτωση ενός σημερινού κοινωνικού κινήματος στον ελλαδικό χώρο. Πρόκειται για το κίνημα κατά των μεταλλείων στις Σκουριές της Βορειοανατολικής Χαλκιδικής. Έχοντας ως παράδειγμα μελέτης το συγκεκριμένο κίνημα, αναδεικνύονται κάποια από τα χαρακτηριστικά των σύγχρονων κινημάτων και γίνεται γενικότερα μία προσπάθεια σύνδεσης του θεωρητικού πλαισίου που συζητήθηκε στο πρώτο μέρος και του πρακτικού πλαισίου ενός υπαρκτού κοινωνικού φαινομένου.Εξετάζοντας τα στοιχεία που προκύπτουν για την ταυτότητα και την αναγκαιότητα ύπαρξης σύγχρονων κοινωνικών κινημάτων, αντιλαμβανόμαστε τη σημαντικότητα του ρόλου του κοινωνικού επιστήμονα και τείνουμε σε μία αναθεώρησή του, που τον θέλει ενεργό εργαλείο στην προσπάθεια εξυγίανσης της κοινωνίας.
description: This thesis deals with the issue of contemporary social movements. In particular, there is a detailed report on the characteristics of contemporary social movements, their root causes, the way in which they are moving and the claiming forms that evolve, and how they are perceived by people in general but also relevant to the issue scientists. In the effort to signify such movements, positive elements, which contrast them to earlier forms of social struggle and connect them to promising thoughts, arise; disadvantages that impel them to precocious failure arise as well. In the second part of this thesis, the case of a current social movement that takes place in Greece is elaborated. This is the movement against mining in Skouries, in Northeastern Chalcidice. With this particular movement serving as the example study, some of the characteristics of modern movements are highlighted and there is generally an attempt to link the theoretical framework discussed in the first part of the thesis with the practical framework of an existing social phenomenon. Considering the data that arise for the identity and necessity of the existence of modern social movements, we understand the importance of the role of the social scientist and we tend to a review in which the scientist occupies the role of the active tool in the effort to make the society sounder.
Statistical representation models for mutation information within genomic data
Creators: name: Simsek, Özlem
name: Arzucan Özgür
name: Gürgen, Fikret
Publisher: name: F1000 Research Limited
Year: 2019

description: Background:
As DNA sequencing technologies are improving and getting cheaper, genomic data can be utilized for diagnosis of many diseases such as cancer. Human raw genome data is huge in size for computational systems. Therefore, there is a need for a compact and accurate representation of the valuable information in DNA. The occurrence of complex genetic disorders often results from multiple gene mutations. The effect of each mutation is not equal for the development of a disease. Inspired from the field of information retrieval, we propose using the term frequency (tf) and BM25 term weighting measures with the inverse document frequency (idf) and relevance frequency (rf) measures to weight genes based on their mutations. The underlying assumption is that the more mutations a gene has in patients with a certain disease and the less mutations it has in other patients, the more discriminative that gene is.
Results:
We evaluated the proposed representations on the task of cancer type classification. We applied various machine learning techniques using the tf-idf and tf-rf schemes and their BM25 versions. Our results show that the BM25-tf-rf representation leads to improved classification accuracy and f-score values compared to the other representations. The highest accuracy (76.44%) and f-score (76.95%) are achieved with the BM25-tf-rf based data representation.
Conclusions:
As a result of our experiments, the BM25-tf-rf scheme and the proposed neural network model is shown to be the best performing classification system for our case study of cancer type classification. This system is further utilized for causal gene analysis. Examples from the most effective genes that are used for decision making are found to be in the literature as target or causal genes.
Η κριτική σκέψη στη διδακτική πράξη: πειραματική εφαρμογή ενός προτεινόμενου προγράμματος
Creators: name: Ματσαγγούρας, Ηλίας Γ.
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Παιδαγωγική Επιθεώρηση, Vol. 27 (1998)
Physics at LHC
Creators: name: Ellis, John
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The prospects for physics at the LHC are discussed, starting with the foretaste, preparation (and perhaps scoop) provided by the Tevatron, in particular, and then continuing through the successive phases of LHC operation. These include the start-up phase, the early physics runs, the possible search for new physics in double diffraction, the continuation to nominal LHC running, and the possible upgrade of the LHC luminosity. Emphasis is placed on the prospects for Higgs physics and the search for supersymmetry. The progress and discoveries of the LHC will set the time-scale and agenda for the major future accelerator projects that will follow it.
description: 21 pages, 12 figures, Concluding talk at the Physics at LHC conference, Krakow, July 2006
A Comparison of Full Information Maximum Likelihood and Machine Learning Missing Data Analytical Methods in Growth Curve Modeling
Creators: name: Tang, Dandan
name: Tong, Xin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Missing data are inevitable in longitudinal studies. Traditional methods, such as the full information maximum likelihood (FIML), are commonly used to handle ignorable missing data. However, they may lead to biased model estimation due to missing not at random data that often appear in longitudinal studies. Recently, machine learning methods, such as random forests (RF) and K-nearest neighbors (KNN) imputation methods, have been proposed to cope with missing values. Although machine learning imputation methods have been gaining popularity, few studies have investigated the tenability and utility of these methods in longitudinal research. Through Monte Carlo simulations, this study evaluates and compares the performance of traditional and machine learning approaches (FIML, RF, and KNN) in growth curve modeling. The effects of sample size, the rate of missingness, and the missing data mechanism on model estimation are investigated. Results indicate that FIML is a better choice than the two machine learning imputation methods in terms of model estimation accuracy and efficiency.
description: 8 pages, 2 figures, and This proceeding was accepted by The Annual Meeting of the Psychometric Society
Charge fluctuations and electric mass in a hot meson gas
Creators: name: Doring, M.
name: Koch, V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Net-Charge fluctuations in a hadron gas are studied using an effective hadronic interaction. The emphasis of this work is to investigate the corrections of hadronic interactions to the charge fluctuations of a non-interacting resonance gas. Several methods, such as loop, density and virial expansions are employed. The calculations are also extended to SU(3) and some resummation schemes are considered. Although the various corrections are sizable individually, they cancel to a large extent. As a consequence we find that charge fluctuations are rather well described by the free resonance gas.
description: 32 pages, 18 figures
Searching anomalous polarization modes of stochastic gravitational wave background with LISA and Taiji
Creators: name: Omiya, Hidetoshi
name: Seto, Naoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The vector and scalar polarization modes of gravitational waves do not exist in General Relativity, and their detection would have significant impacts on fundamental physics. In this paper, we explored the detectability of these anomalous polarization modes in a gravitational wave background around 1 mHz with the future LISA-Taiji network. The inherent geometrical symmetry of the network largely simplifies the correlation analysis. By taking a suitable linear combination of the correlated outputs, the contribution of the standard tensor modes can be canceled algebraically, and the anomalous modes can be exclusively examined. We provide concise expressions for the signal-to-noise ratios of the anomalous modes with this cancellation method. We also discuss the possibility of separately estimating the amplitudes of the vector and scalar modes, using the overall frequency dependence of the associated overlap reduction functions.
description: 11 pages, 9 figures
On the third order structure function for rotating 3D homogeneous turbulent flow
Creators: name: Chakraborty, Sagar
name: Bhattacharjee, J. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: A form for the two-point third order structure function has been calculated for three dimensional homogeneous incompressible slowly rotating turbulent fluid. It has been argued that it may possibly hint at the initiation of the phenomenon of two-dimensionalisation of the 3D incompressible turbulence owing to rotation.
description: This revised version corrects some serious flaws in the discussions after the equation (2) and the equation (13) of the earlier version. Some typos are also corrected
Multistage games and Bell scenarios with communication
Creators: name: Moreno, George
name: Nery, Ranieri
name: Palhares, Alberto
name: Chaves, Rafael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bell nonlocality is a cornerstone of quantum theory with applications in information processing ranging from cryptography to distributed computing and game theory. Indeed, it is known that Bell's theorem can be formally linked to Bayesian games, allowing the use of nonlocal correlations to advise players and thereby achieve new points of equilibrium that are unavailable classically. Here we generalize this link, proving the connection between multistage games of incomplete information with Bell scenarios involving the communication of measurement outcomes between the parties. We apply the general framework for a few cases of interest and analyze the equilibrium reached by quantum nonlocal correlations.