cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Σύγκριση δορυφορικών δεδομένων οπτικών ιδιοτήτων νέφωσης για την περίοδο 2004-2011
Creators: name: Κωνσταντίνου, Αθανασία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Σύγκριση δορυφορικών δεδομένων-Ευρώπη
Οπτικές ιδιότητες νέφωσης
Comparison of satellite data-Europe
Cloud optical properties

description: Στην παρούσα εργασία, εξετάστηκαν οι μακροφυσικές και οι μικροφυσικές ιδιότητες των νεφών για χρονικό διάστημα 8 ετών, κατά την περίοδο 2004-2011. Για τον σκοπό της έρευνας αυτής, χρησιμοποιήθηκαν υψηλής ανάλυσης παρατηρήσεις (0.05x0.05 degree)από το CM SAF αλλά και χαμηλότερης, συγκριτικά με αυτό, ανάλυσης από το CERES(1x1 degree). Επίσης, εξετάστηκαν και οι χωρικές και χρονικές μορφές της διαφοράς των δύο προϊόντων. Βρέθηκε λοιπόν πως η διαφορά μεταξύ CM SAF και CERES για το ποσοστό νεφοκάλυψης CFC είναι ~10% ενώ το οπτικό βάθος των νεφών από το CM SAF είναι γενικά χαμηλότερο από αυτό που εντοπίζει το CERES κατά ~10%. Ακόμη, εξετάστηκε και η ενεργός ακτίνα των σταγονιδίων αλλά και των παγοκρυστάλλων των νεφών. Έτσι, προέκυψε πως το Rel από το CM SAF είναι ~12% υψηλότερο ενώ το Rei από το CM SAF είναι χαμηλότερο ~20% σε σύγκριση με τα ίδια αποτελέσματα από το CERES. Τέτοιου είδους ερευνητικές συγκρίσεις σαν την συγκεκριμένη μας βοηθούν να πάρουμε μια εικόνα για τις δυνατότητες και τον περιορισμό των νεφικών δορυφορικών προϊόντων που χρησιμοποιούνται σήμερα από την επιστημονική κοινότητα
description: In this work, the macro and micro physical properties of liquid and ice clouds over Europe are examined for the 8-year period 2004-2011. For the scopes of this research, high resolution (0.05x0.05 degree) satellite-based observations from CM SAF (Satellite Application Facility on Climate Monitoring) and coarse resolution (1x1 degree) data from CERES (Clouds and the Earth's Radiant Energy System) are utilized. The spatial and temporal patterns of the bias between the two products are examined. It is found that the difference between CM SAF and CERES cloud fractional cover (CFC) is ~10% while cloud optical thickness (COT) from CM SAF is generally lower than CERES by ~10 %. The effective radius of liquid (Rel) and ice (Rei) clouds is also examined. For the region of interest, CM SAF Rel is ~12% higher while CM SAF Rei is lower by ~20% than that of CERES. Intercomparison studies like the one presented here help us to get an insight into the capabilities and limitation of the cloud satellite products which are currently in use by the scientific community
Hadron-quark mixed phase in the quark-meson coupling model
Creators: name: Ju, Min
name: Wu, Xuhao
name: Ji, Fan
name: Hu, Jinniu
name: Shen, Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore the possibility of a structured hadron-quark mixed phase forming in the interior of neutron stars. The quark-meson coupling (QMC) model, which explicitly incorporates the internal quark structure of the nucleon, is employed to describe the hadronic phase, while the quark phase is described by the same bag model as the one used in the QMC framework, so as to keep consistency between the two coexisting phases. We analyze the effect of the appearance of hadron-quark pasta phases on the neutron-star properties. We also discuss the influence of nuclear symmetry energy and the bag constant B in quark matter on the deconfinement phase transition. For the treatment of the hadron-quark mixed phase, we use the energy minimization method and compare it with the Gibbs construction. The finite-size effects like surface and Coulomb energies are taken into account in the energy minimization method; they play crucial roles in determining the pasta configuration during the hadron-quark phase transition. It is found that the finite-size effects can significantly reduce the region of the mixed phase relative to that of the Gibbs construction. Using a consistent value of B in the QMC model and quark matter, we find that hadron-quark pasta phases are formed in the interior of massive stars, but no pure quark matter can exist.
Interview with Dr. Marion L. Krippaehne
Creators: name: Oregon Medical Association
Publisher: name: Oregon Medical Association
Year: 2007
Subjects: Osgood, Edwin (Edwin Eugene), 1899-1969
Peterson, Clare Gray, 1917-
Krippaehne, William Wonn, 1917-1985
World War II
Women in medicine
Hematology
Internal Medicine
Medicare
Oregon--Portland
American Samoa

description: Dr. Marion L. Krippaehne reflects on her early life and the application process for medical school in the 1940s. She talks about her student days at the University of Oregon Medical School and then working in hematology and later internal medicine. She reflects on the implementation of Medicare, practicing medicine in American Samoa for a year after retiring, and the future of medicine with her concerns over drug advertising and advice for future doctors.
Oxidative stress biomarkers and complexity of heart rate variability during acute single cigarette smoking
Creators: name: Amornchai Trikunakornwong
name: Kesorn Suwanprasert
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: heart rate variability
autonomic system
nitric oxide
sLOX-1
smoking

description: Songklanakarin Journal of Science and Technology, 41, 3, 599-606
Rough statistical convergence on triple sequence of the Bernstein operator of random variables in probability
Creators: name: Nagarajan Subramanian
name: Esi, Ayhan
name: Ozdemir, Mustafa Kemal
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: rough statistical convergence
rough strong Ces?ro summable
rough lacunary statistical convergence
rough convergence
rough ?- statistical convergence
rough strong (V,?)- summable
Bernstein polynomials

description: Songklanakarin Journal of Science and Technology, 41, 3, 567-579
The nature of the outflow in gamma-ray bursts
Creators: name: Kumar, P.
name: McMahon, E.
name: Panaitescu, A.
name: Willingale, R.
name: O'Brien, P.
name: Burrows, D.
name: Cummings, J.
name: Gehrels, N.
name: Holland, S.
name: Pandey, S. B.
name: Berk, D. Vanden
name: Zane, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Swift satellite has enabled us to follow the evolution of gamma-ray burst (GRB) fireballs from the prompt gamma-ray emission to the afterglow phase. The early x-ray and optical data obtained by telescopes aboard the Swift satellite show that the source for prompt gamma-ray emission, the emission that heralds these bursts, is short lived and that its source is distinct from that of the ensuing, long-lived afterglow. Using these data, we determine the distance of the gamma-ray source from the center of the explosion. We find this distance to be 1e15-1e16 cm for most bursts and we show that this is within a factor of ten of the radius of the shock-heated circumstellar medium (CSM) producing the x-ray photons. Furthermore, using the early gamma-ray, x-ray and optical data, we show that the prompt gamma-ray emission cannot be produced in internal shocks, nor can it be produced in the external shock; in a more general sense gamma-ray generation mechanisms based on shock physics have problems explaining the GRB data for the ten Swift bursts analyzed in this work. A magnetic field dominated outflow model for GRBs has some attractive features, although the evidence in its favor is inconclusive. Finally, the x-ray and optical data allow us to provide an upper limit on the density of the CSM of about 10 protons per cubic cm at a distance of about 5e16 cm from the center of explosion.
description: Accepted to MNRAS Letters. 6 pages, 2 figures, & 2 tables
Analytical results for the distribution of first return times of random walks on random regular graphs
Creators: name: Tishby, Ido
name: Biham, Ofer
name: Katzav, Eytan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We present analytical results for the distribution of first return (FR) times of random walks (RWs) on random regular graphs (RRGs) consisting of $N$ nodes of degree $c \ge 3$. Starting from a random initial node $i$ at time $t=0$, at each time step $t \ge 1$ an RW hops into a random neighbor of its previous node. We calculate the distribution $P ( T_{\rm FR} = t )$ of first return times to the initial node $i$. We distinguish between first return trajectories in which the RW retrocedes its own steps backwards all the way back to the initial node $i$ and those in which the RW returns to $i$ via a path that does not retrocede its own steps. In the retroceding scenario, each edge that belongs to the RW trajectory is crossed the same number of times in the forward and backward directions. In the non-retroceding scenario the subgraph that consists of the nodes visited by the RW and the edges it has crossed between these nodes includes at least one cycle. In the limit of $N \rightarrow \infty$ the RRG converges towards the Bethe lattice. The Bethe lattice exhibits a tree structure, in which all the first return trajectories belong to the retroceding scenario. Moreover, in the limit of $N \rightarrow \infty$ the trajectories of RWs on RRGs are transient in the sense that they return to the initial node with probability $<1$. In this sense they resemble the trajectories of RWs on regular lattices of dimensions $d \ge 3$. The analytical results are found to be in excellent agreement with the results obtained from computer simulations.
description: 27 pages, 9 figures. arXiv admin note: text overlap with arXiv:2102.12195
Solution of generalized fractional reaction-diffusion equations
Creators: name: Saxena, R. K.
name: Mathai, A. M.
name: Haubold, H. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 33C20; 33C90

description: This paper deals with the investigation of a closed form solution of a generalized fractional reaction-diffusion equation. The solution of the proposed problem is developed in a compact form in terms of the H-function by the application of direct and inverse Laplace and Fourier transforms. Fractional order moments and the asymptotic expansion of the solution are also obtained.
description: LaTeX, 18 pages, corrected typos
Influence of Coil Position on AC Losses of Stator Superconducting Windings of a Synchronous Machine for a 10 MW Wind Turbine
Creators: name: Vargas-Llanos, Carlos Roberto
name: Lengsfeld, Sebastian
name: Noe, Mathias
name: Arndt, Tabea
name: Grilli, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: One of the main tasks during the design of a superconducting electrical machine is the estimation of losses in the superconducting coils. These losses can be decisive in such applications since they influence the cooling power requirements and the overall efficiency of the machine. In this publication, we focus on the dissipation in the stator superconducting coils of a synchronous machine for a wind turbine application. The T-A formulation of Maxwell's equations is used in a 2D finite element model to analyse the behaviour of the magnetic field around the coils and calculate losses. Particular attention is given to the position of the coils inside a slot and several coil configurations are presented. It is shown that certain coil arrangements lead to a significantly lower total loss, a more uniform loss distribution, which ultimately leads to the possibility of increasing the operating temperature.
Magnetism and Magnetic Isomers in Free Chromium Clusters
Creators: name: Payne, F. W.
name: Jiang, Wei
name: Bloomfield, L. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: We have used the Stern-Gerlach deflection technique to study magnetism in chromium clusters of 20-133 atoms. Between 60 K and 100 K, we observe that these clusters have large magnetic moments and respond superparamagnetically to applied magnetic fields. Using superparamagnetic theory, we have determined the moment per atom for each cluster size and find that it often far exceeds the moment per atom present anywhere in the bulk antiferromagnetic lattice. Remarkably, our cluster beam contains two magnetically distinguishable forms of each cluster size with >= 34 atoms. We attribute this observation to structural isomers.
Searching for changing-state AGNs in massive datasets -- I: applying deep learning and anomaly detection techniques to find AGNs with anomalous variability behaviours
Creators: name: Sánchez-Sáez, P.
name: Lira, H.
name: Martí, L.
name: Sánchez-Pi, N.
name: Arredondo, J.
name: Bauer, F. E.
name: Bayo, A.
name: Cabrera-Vives, G.
name: Donoso-Oliva, C.
name: Estévez, P. A.
name: Eyheramendy, S.
name: Förster, F.
name: Hernández-García, L.
name: Arancibia, A. M. Muñoz
name: Pérez-Carrasco, M.
name: Sepúlveda, M.
name: Vergara, J. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The classic classification scheme for Active Galactic Nuclei (AGNs) was recently challenged by the discovery of the so-called changing-state (changing-look) AGNs (CSAGNs). The physical mechanism behind this phenomenon is still a matter of open debate and the samples are too small and of serendipitous nature to provide robust answers. In order to tackle this problem, we need to design methods that are able to detect AGN right in the act of changing-state. Here we present an anomaly detection (AD) technique designed to identify AGN light curves with anomalous behaviors in massive datasets. The main aim of this technique is to identify CSAGN at different stages of the transition, but it can also be used for more general purposes, such as cleaning massive datasets for AGN variability analyses. We used light curves from the Zwicky Transient Facility data release 5 (ZTF DR5), containing a sample of 230,451 AGNs of different classes. The ZTF DR5 light curves were modeled with a Variational Recurrent Autoencoder (VRAE) architecture, that allowed us to obtain a set of attributes from the VRAE latent space that describes the general behaviour of our sample. These attributes were then used as features for an Isolation Forest (IF) algorithm, that is an anomaly detector for a "one class" kind of problem. We used the VRAE reconstruction errors and the IF anomaly score to select a sample of 8,809 anomalies. These anomalies are dominated by bogus candidates, but we were able to identify 75 promising CSAGN candidates.
description: Accepted for publication in the Astronomical Journal (AJ)
Shear strengths of fractures in Tak granite under orthotropic stresses
Creators: name: Pajeeraporn Weingchanda
name: Supattra Khamrat
name: Thanitta Thongprapa
name: Kittitep Fuenkajorn
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: dilation
strain energy
orthotropic stress
fault

description: Songklanakarin Journal of Science and Technology, 41, 3, 669-678
Αμυντικές δαπάνες-εξωτερικό χρέος-οικονομική μεγέθυνση: υπάρχει αιτιώδης σχέση; μια εμπειρική έρευνα για Ελλάδα - Τουρκία - Κύπρο
Creators: name: Χαραλαμπίδης, Σοφοκλής Ευθυμίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: αμυντικές δαπάνες
εξωτερικό χρέος
οικονομική μεγέθυνση
defense expenditures
external debt
economic growth

description: Η σχέση μεταξύ αμυντικών δαπανών, εξωτερικού χρέους και οικονομικής μεγέθυνσης έχει απασχολήσει έντονα τους ερευνητές, αν και μέχρι σήμερα δεν υπάρχει σαφής συναίνεση μεταξύ τους αναφορικά με την κατεύθυνση και την ισχύ αυτής της σχέσης. Αν και έχει υποστηριχθεί ότι οι αμυντικές δαπάνες συμβάλλουν στην οικονομική μεγέθυνση μέσω της αύξησης της παραγωγικότητας και της διάχυσης των θετικών εξωτερικοτήτων στην ιδιωτική οικονομία, από την άλλη πλευρά, έχει τεκμηριωθεί ότι οι αμυντικές δαπάνες έχουν αυξητική επίδραση στη διόγκωση του εξωτερικού χρέους και την επιδείνωση των δημοσιονομικών μεγεθών. Σκοπός της παρούσας εργασίας είναι η διερεύνηση της σχέσης μεταξύ αμυντικών δαπανών, εξωτερικού χρέους και οικονομικής μεγέθυνσης στην Ελλάδα, την Τουρκία και την Κύπρο για την περίοδο μεταξύ 1988-2015, οι οποίες έχουν παραδοσιακά υψηλές αμυντικές δαπάνες, δεδομένης της γεωστρατηγικής τους θέσης και του ανταγωνισμού εξοπλισμών μεταξύ τους. Σύμφωνα με τα ερευνητικά αποτελέσματα, διαπιστώθηκε ότι οι αμυντικές δαπάνες και το εξωτερικό χρέος επιδρούν μακροχρόνια στο κκ ΑΕΠ στην Ελλάδα και την Τουρκία. Ωστόσο, η διαπίστωση αυτή δεν ισχύει για την περίπτωση της Κύπρου. Παράλληλα, βρέθηκε ότι στην περίπτωση της Ελλάδας, υπάρχει μακροχρόνια σχέση συνολοκλήρωσης με το κκ ΑΕΠ να επιδρά θετικά στις αμυντικές δαπάνες, ενώ αντίθετα, στην περίπτωση της Τουρκίας και της Κύπρου, διαπιστώθηκε αρνητική σχέση μεταξύ τους
description: The relationship between defense expenditures, external debt and economic growth has intensely preoccupied researchers, though so far there is no clear consensus among them regarding the direction and strength of this relationship. Although it has been argued that defense spending contribute to economic growth through productivity increase and diffusion of positive externalities in the private sector, on the other hand, it has demonstrated that defense expenditures have an upward impact on raise of the external debt and the deterioration of fiscal measures. The purpose of this study is to investigate the relationship between defense expenditures, foreign debt and economic growth in Greece, Turkey and Cyprus for the period 1988-2015, which have traditionally high defense spending, given their geostrategic position and their mutual arms race. According to the research results, it was demonstrated that defense expenditure and foreign debt have a long-run effect on GDP per capita of Greece and Turkey but not in Cyprus. Also, it was found that in Greece there is a long-term cointegration relationship where GDP per capita effects on defense expenditure positively, but in Turkey and Cyprus was found a negative effect
Simulation of temperature distribution in different human skin types exposed to laser irradiation with different wavelengths and laser irradiation intensities
Creators: name: Patcharaporn Wongchadakul
name: Phadungsak Rattanadecho
name: Teerapot Wessapan
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: laser
bioheat equation
skin
finite element
thermotherapy

description: Songklanakarin Journal of Science and Technology, 41, 3, 529-538
Gravitational waves from the remnants of the first stars in nuclear star clusters
Creators: name: Liu, Boyuan
name: Bromm, Volker
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study Population III (Pop III) binary remnant mergers in nuclear star clusters (NSCs) with a semi-analytical approach for early structure formation. Within this framework, we keep track of the dynamics of Pop III binary (compact object) remnants during cosmic structure formation, and construct the population of Pop III binary remnants that fall into NSCs by dynamical friction of field stars. The subsequent evolution within NSCs is then derived from three-body encounters and gravitational-wave (GW) emission. We find that 7.5% of Pop III binary remnants will fall into the centres ($< 3\ \rm pc$) of galaxies. About $5-50\%$ of these binaries will merge at $z>0$ in NSCs, including those with very large initial separations (up to 1~pc). The merger rate density (MRD) peaks at $z\sim 5-7$ with $\sim 0.4-10\ \rm yr^{-1}\ \rm Gpc^{-3}$, leading to a promising detection rate $\sim 170-2700\ \rm yr^{-1}$ for 3rd-generation GW detectors that can reach $z\sim 10$. Low-mass ($\lesssim 10^{6}\ \rm M_{\odot}$) NSCs formed at high redshifts ($z\gtrsim 4.5$) host most ($\gtrsim 90\%$) of our mergers, which mainly consist of black holes (BHs) with masses $\sim 40-85\ \rm M_{\odot}$, similar to the most massive BHs found in LIGO events. Particularly, our model can produce events like GW190521 involving BHs in the standard mass gap for pulsational pair-instability supernovae with a MRD $\sim 0.01-0.09\ \rm yr^{-1}\ Gpc^{-3}$ at $z\sim 1$, consistent with that inferred by LIGO.
description: 18 pages, 22 figures, accepted for publication in MNRAS
Internal Dynamics of the Hypercompact H II Region G28.20-0.04N
Creators: name: Sewilo, M.
name: Churchwell, E.
name: Kurtz, S.
name: Goss, W. M.
name: Hofner, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High resolution (0.15") Very Large Array observations of 7 mm continuum and H53a line emission toward the hypercompact H II region G28.20-0.04N reveal the presence of large-scale ordered motions. We find a velocity gradient of 1000 km/s/pc along the minor axis of the continuum source. Lower resolution (1.0"-2.3") radio recombination line observations indicate a systematic increase of line width from H30alpha to H92alpha. Under the assumption that the H30alpha line does not suffer significant pressure broadening, we have deconvolved the contributions of statistical broadening (thermal, turbulent, and pressure) from large-scale motions. The pressure broadening of the H53alpha, H76alpha, and H92alpha lines implies an electron density of 6.9E+06, 8.5E+05, and 2.8E+05 cm^(-3), respectively.
description: 12 pages, 2 figures, 1 table, Accepted for publication in ApJ
Grammatical elicitation: Motion verb paradigms, converbial phrases, and complementation
Creators: name: Cheruiyot, Ezra
name: Bossi, Madeline
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: sgc

description: One .wav file and one .pdf file. Elicitation of verbal agreement paradigms for various motion verbs. Elicitation of converbial clauses modifying various arguments. Elicitation of complementation structures with and without inflected complementizers.
Validity and reliability of the Thai version of the Cardiac Depression Scale among Thai cardiac patients
Creators: name: Rapin Polsook
name: Yupin Aungsuroch
Publisher: name: Research and Development Office, Prince of Songkla University
Year: 2019
Subjects: instrument
depression
cardiac patients
Thai

description: Songklanakarin Journal of Science and Technology, 41, 3, 658-663
Many-valued generalizations of two finite intervals in Post’s lattice
Creators: name: Denham, Graham Campbell
Publisher: name: University of British Columbia
Year: 2009

description: A study due to Emil Post shows that, although the lattice of clones in two-valued algebraic logic is countably infinite, there exist oniy finitely many clones that contain both constants, and only finitely many that contain the negation function. There are, however, uncountably many k-valued clones for all k > 2; in fact, it is known that uncountably many clones contain all constants. The constants of two-valued logic can also be regarded as the set of noninvertible, unary functions on a two element domain. It is shown here that, for values of k greater than two, there remain only finitely many k-valued clones containing all such functions. Similarly, one can generalize the set of clones in Post’s lattice that contain the negation function to those k-valued clones that contain all invertible, unary functions. Once again, there are only finitely many such clones, and they can be described explicitly. These two generalizations of sets of two-valued clones are presented with an introduction to the study of the lattice of clones, and a survey of relevant results. We also note and discuss the fact that the latter result serves to give a description of all homogeneous relation algebras over a finite underlying set.
Matrix Big Brunch
Creators: name: Bedford, J.
name: Papageorgakis, C.
name: Rodriguez-Gomez, D.
name: Ward, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Following the holographic description of linear dilaton null Cosmologies with a Big Bang in terms of Matrix String Theory put forward by Craps, Sethi and Verlinde, we propose an extended background describing a Universe including both Big Bang and Big Crunch singularities. This belongs to a class of exact string backgrounds and is perturbative in the string coupling far away from the singularities, both of which can be resolved using Matrix String Theory. We provide a simple theory capable of describing the complete evolution of this closed Universe.
description: 15 pages, no figures. References added
Η Τεχνική των Ερωτήσεων στη Σχολική Θρησκευτική Αγωγή
Creators: name: Πόπα, Μαγκνταλένα Σιμόνα Γκεόργκε
Publisher: name: Aristotle University of Thessaloniki
Year: 2017
Subjects: Τεχνική ερωτήσεων-Απαντήσεις
Σχολική Θρησκευτική Αγωγή
Questioning Technique-Answers
3. Religious Training in Schools

description: Σκοπός της διπλωματικής εργασίας, ήταν η διερεύνηση των τεχνικών των ερωτήσεων στη σχολική θρησκευτική αγωγή. Εξετάστηκε ο ορισμός και η φύση των ερωτήσεων, όπως ο ρόλος και η θέση τους στη μαθησιακή διαδικασία. Τέθηκαν κάποια κριτήρια με τα οποία γίνεται η ταξινόμηση των ερωτήσεων, οι οποίες χωρίστηκαν σε κατηγορίες και επίπεδα. Έπειτα έγινε αναφορά στη χρήση των ερωτήσεων στη διδακτική πράξη και στον ρόλο τους, που αποσκοπεί στην συμμετοχικότητα των μαθητών στη μαθησιακή διαδικασία και στην ανάπτυξη της σκέψης. Έγινε ανάλυση των ερωτήσεων του εκπαιδευτικού και της επάρκειάς του στο θέμα των ερωτήσεων. Ένα θέμα το οποίο είναι σημαντικό για την κατανόηση του μαθήματος είναι η σωστή κατανομή και υποβολή των ερωτήσεων στην τάξη. Επιπλέων, οι απαντήσεις του εκπαιδευτικού στις ερωτήσεις των μαθητών θα πρέπει να ακολουθούν κάποιες βασικές αρχές ώστε να καλύπτονται πλήρως. Ακόμη, εξετάζεται ο διάλογος και οι ερωταποκρίσεις (στη διδασκαλία) του Χριστού και στη χριστιανική γραμματεία άλλα και η χρήση των ερωτήσεων στο Γεροντικόν. Επιπρόσθετα γίνεται λόγος για τη θέση των ερωτήσεων στην πατερική διδασκαλία άλλα και στη διδακτική πράξη του μαθήματος των θρησκευτικών. Συνοψίζοντας, οι ερωτήσεις χρησιμοποιούνται ως επικοινωνιακό πλαίσιο μεταξύ του θεολόγου και του μαθητή, ακλουθώντας τεχνικές οι οποίες βοηθούν στην αξιολόγηση της επίδοσης των μαθητών στη σχολική θρησκευτική αγωγή
description: The aim of this thesis was the investigation of questioning technique in the school religious training. The definition and nature of questions was examined, as well as the role and their position in the learning procedure. Some criteria were put with which the classification of questions is made, that were divided in categories and levels. Then, a mention was made in the use of questions in teaching practice and their role that aims to the participation of students in learning procedure and development of thought. An analysis of teacher’s questions was made and his competency in the topic of questions. One topic, which is important for understanding the lesson, is the correct distribution and making of questions in class. Furthermore, the teacher’s answers to the students’ questions should follow some basic principles so that they would be covered in full. Still, the dialogue and question answering (in teaching) of Christ (and in Christian Books) is examined, but also the use of questions in “Gerontikon”. In addition, a mention is made for the position of questions in Fathers teaching but also in teaching practice of the Religious Education lesson. To sum up, the questions are used as communicative framework between Theologist and student, by following techniques, which help evaluate the performance of students in school religious training
The ACS Fornax Cluster Survey. I. Introduction to the Survey and Data Reduction Procedures
Creators: name: Jordan, Andres
name: Blakeslee, John P.
name: Cote, Patrick
name: Ferrarese, Laura
name: Infante, Leopoldo
name: Mei, Simona
name: Merritt, David
name: Peng, Eric W.
name: Tonry, John L.
name: West, Michael J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Fornax Cluster is a conspicuous cluster of galaxies in the southern hemisphere and the second largest collection of early-type galaxies within
description: 13 pages, 7 figures. Accepted for publication in ApJS. Also available at http://www.eso.org/~ajordan/ACSFCS/Publications.html
Integrating a QPSK Quantum Key Distribution Link
Creators: name: Silva, M. B. Costa e
name: Xu, Q.
name: Agnolini, S.
name: Guilley, S.
name: Danger, J-L.
name: Gallion, P.
name: Mendieta, F. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present the integration of the optical and electronic subsystems of a BB84-QKD fiber link. A highspeed FPGA MODEM generates the random QPSK sequences for a fiber-optic delayed self-homodyne scheme using APD detectors.
description: 2 pages, 4 figures, European Conference on Optical Communication 2006
Massive and rapid predominantly volcanic CO2 emission during the end-Permian mass extinction
Creators: name: Cui, Ying
name: Li, Mingsong
name: van Soelen, Elsbeth E.
name: Peterse, Francien
name: Kürschner, Wolfram M.
Publisher: name: Zenodo
Year: 2021

description: This model output is affiliated with the manuscript in review at the Proceedings of the National Academy of Sciences: "Massive and rapid predominantly volcanic CO2 emission during the end-Permian mass extinction".
Holographic image reconstruction with phase recovery and autofocusing using recurrent neural networks
Creators: name: Huang, Luzhe
name: Liu, Tairan
name: Yang, Xilin
name: Luo, Yi
name: Rivenson, Yair
name: Ozcan, Aydogan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Digital holography is one of the most widely used label-free microscopy techniques in biomedical imaging. Recovery of the missing phase information of a hologram is an important step in holographic image reconstruction. Here we demonstrate a convolutional recurrent neural network (RNN) based phase recovery approach that uses multiple holograms, captured at different sample-to-sensor distances to rapidly reconstruct the phase and amplitude information of a sample, while also performing autofocusing through the same network. We demonstrated the success of this deep learning-enabled holography method by imaging microscopic features of human tissue samples and Papanicolaou (Pap) smears. These results constitute the first demonstration of the use of recurrent neural networks for holographic imaging and phase recovery, and compared with existing methods, the presented approach improves the reconstructed image quality, while also increasing the depth-of-field and inference speed.
description: 18 Pages, 7 Figures, 1 Table
Smart Textiles that Teach: Fabric-Based Haptic Device Improves the Rate of Motor Learning
Creators: name: Ramachandran, Vivek
name: Schilling, Fabian
name: Wu, Amy R
name: Floreano, Dario
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: People learn motor activities best when they are conscious of their errors and make a concerted effort to correct them. While haptic interfaces can facilitate motor training, existing interfaces are often bulky and do not always ensure post-training skill retention. Here, we describe a programmable haptic sleeve composed of textile-based electroadhesive clutches for skill acquisition and retention. We show its functionality in a motor learning study where users control a drone's movement using elbow joint rotation. Haptic feedback is used to restrain elbow motion and make users aware of their errors. This helps users consciously learn to avoid errors from occurring. While all subjects exhibited similar performance during the baseline phase of motor learning, those subjects who received haptic feedback from the haptic sleeve committed 23.5% fewer errors than subjects in the control group during the evaluation phase. The results show that the sleeve helps users retain and transfer motor skills better than visual feedback alone. This work shows the potential for fabric-based haptic interfaces as a training aid for motor tasks in the fields of rehabilitation and teleoperation.
Black-Hole Accretion Disc as an Analogue Gravity Model
Creators: name: Das, Tapas Kumar
name: Bilic, Neven
name: Dasgupta, Surajit
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We formulate and solve the equations governing the transonic behaviour of a general relativistic black-hole accretion disc with non-zero advection velocity. We demonstrate that a relativistic Rankine-Hugoniot shock may form leading to the formation of accretion powered outflow. We show that the critical points of transonic discs generally do not coincide with the corresponding sonic points. The collection of such sonic points forms an axisymmetric hypersurface, generators of which are the acoustic null geodesics, i.e. the phonon trajectories. Such a surface is shown to be identical with an acoustic event horizon. The acoustic surface gravity and the corresponding analogue horizon temperature $T_{AH}$ at the acoustic horizon are then computed in terms of fundamental accretion parameters. Physically, the analogue temperature is associated with the thermal phonon radiation analogous to the Hawking radiation of the black-hole horizon.Thus, an axisymmetric black-hole accretion disc is established as a natural example of the classical analogue gravity model, for which two kinds of horizon exist simultaneously. We have shown that for some values of astrophysically relevant accretion parameters, the analogue temperature exceeds the corresponding Hawking temperature. We point out that acoustic {\it white holes} can also be generated for a multi-transonic black-hole accretion with a shock. Such a white hole, produced at the shock, is always flanked by two acoustic black holes generated at the inner and the outer sonic points. Finally, we discuss possible applications of our work to other astrophysical events which may exhibit analogue effects.
description: Minor changes made. 30 pages, 8 figures, RevTex. High resolution version is available at http://www.mri.ernet.in/~tapas/dbd/paper.ps.gz or by sending an email request to
Computational Social Science in "Science" and "Nature"
Creators: name: Shaheen, Joseph
Publisher: name: figshare
Year: 2021
Subjects: subject: 220208 History and Philosophy of the Social Sciences
subject: FOS: Philosophy, ethics and religion
subject: 220206 History and Philosophy of Science (incl. Non-historical Philosophy of Science)
subject: 160808 Sociology and Social Studies of Science and Technology
subject: FOS: Sociology

description: The growth of Computational Social Science as a subject that encompasses a variety of disciplines, topics, and methods has seen a dramatic increase over the last period. New entrants into this trans-disciplinary field come from a variety of disciplines and interests causing disruption, a re-questioning of accepted principles, and sometimes down-right theater. In this session I hope to cover some of the more salient themes of Computational Social Science development concerning the study of networks with a focus on the last 2 years of issues from “Science” and “Nature” journals, parsed manually. Given time and space, I’ll share a rudimentary meta-analysis of the articles published in those two top ranked journals. The session should be of interest to scholars who need to be informed about developments in the field especially top general interest journals, but cannot dedicate the necessary time to search, find, and digest all relevant publications, or those who are curious about the direction of this ever-expanding field.
Rydberg series of dark excitons and the conduction band spin-orbit splitting in monolayer WSe$_2$
Creators: name: Kapuscinski, Piotr
name: Delhomme, Alex
name: Vaclavkova, Diana
name: Slobodeniuk, Artur
name: Grzeszczyk, Magdalena
name: Bartos, Miroslav
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Faugeras, Clément
name: Potemski, Marek
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Strong Coulomb correlations together with multi-valley electronic bands in the presence of spin-orbit interaction and possible new optoelectronic applications are at the heart of studies of the rich physics of excitons in semiconductor structures made of monolayers of transition metal dichalcogenides (TMD). In intrinsic TMD monolayers the basic, intravalley excitons are formed by a hole from the top of the valence band and an electron either from the lower or upper spin-orbit-split conduction band subbands: one of these excitons is optically active, the second one is "dark", although possibly observed under special conditions. Here we demonstrate the s-series of Rydberg dark exciton states in monolayer WSe$_2$, which appears in addition to a conventional bright exciton series in photoluminescence spectra measured in high in-plane magnetic fields. The comparison of energy ladders of bright and dark Rydberg excitons is shown to be a method to experimentally evaluate one of the missing band parameters in TMD monolayers: the amplitude of the spin-orbit splitting of the conduction band.
description: Manuscript: 9 pages, 4 figures; SM: 3 pages, 2 figures
Modeling Lyman continuum emission from young galaxies
Creators: name: Razoumov, Alexei O.
name: Sommer-Larsen, Jesper
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on cosmological simulations, we model Lyman continuum emission from a sample of 11 high-redshift star forming galaxies spanning a mass range of a factor 20. Each of the 11 galaxies has been simulated both with a Salpeter and a Kroupa initial mass function (IMF). We find that the Lyman continuum (LyC) luminosity of an average star forming galaxy in our sample declines from z=3.6 to 2.4 due to the steady gas infall and higher gas clumping at lower redshifts, increasingly hampering the escape of ionizing radiation. The galaxy-to-galaxy variation of apparent LyC emission at a fixed redshift is caused in approximately equal parts by the intrinsic variations in the LyC emission and by orientation effects. The combined scatter of an order of magnitude can explain the variance in the far-UV spectra of high-redshift galaxies detected by Shapley et al. (2006). Our results imply that the cosmic galactic ionizing UV luminosity would be monotonically decreasing from z=3.6 to 2.4, curiously anti-correlated with the star formation rate in the smaller galaxies, which on average rises during this redshift interval.
description: 8 pages, 12 figures, ApJ, in press
Shade from shading
Creators: name: Liu, Lili
Publisher: name: University of British Columbia
Year: 2009

description: The use of both computer generated images and real video images can be made much more effective by merging them, ideally in real time. This motivation is at the basis of Computer Augmented Reality (CAR), which involves both elements of computer graphics and computer vision. This thesis is concerned with an important aspect of CAR: to obtain geometric informa tion about the light sources and about the surface normals from the image pixel values, and use that information to shade the computer generated objects and reshade the real objects when necessary. To acquire light source direction and surface orientation from a single image in the absence of prior knowledge about the geometry of the scene, we assume that the changes in surface orientation are isotropically distributed. This is exactly true for all convex objects bounded entirely by gradually occluding contours, and approximately true over all scenes. This thesis develops an improved method of estimating light source direction and local surface orientation from shading information extracted from pixel values under such assumptions. First and second derivatives of intensity at each pixel are used to compute these estimates, and a weighted sum of all estimated illuminant directions is used for the whole image. We tested our algorithm with different kinds of images: synthetic images and real video images, images with various non-planar shapes, and images with different (non-diffuse) surface reflections. We found that our illuminant direction estimator is able to produce useful results in all cases, and that our surface orientation estimator is able to give useful information in many cases. The main use for such information in the context of CAR is to reshade objects in the real images according to new lighting information, and our tests show that our method is effective in such cases, even when both the light direction and the surface normals have been estimated from the image.
Single production of the vector-like top quark in the littlest Higgs model at TeV energy $e^{-}γ$ colliders
Creators: name: Liu, Yao-Bei
name: Wang, Xue-Lei
name: Cao, Yong-Hua
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The new colored vector-like heavy fermion $T$ is a crucial prediction in little Higgs models, which plays a key role in breaking the electroweak symmetry. The littlest Higgs model is the most economical one among various little Higgs models. In the context of the littlest Higgs model, we study single production of the new heavy vector-like quark via $e^{-}γ$ collisions and discuss the possibility of detecting this new particle in the TeV energy $e^{+}e^{-}$ collider(LC). We find that the production cross section can vary in a wide range($10^{-3}-10^{1}fb$) in most parameter spaces. For the favorable parameter spaces, the possible signals of the vector-like top quark $T$ can be detected via $e^{-}γ$ collisions in future $LC$ experiment with $\sqrt{s}=3TeV$ and $£=500fb^{-1}$.
description: 10 pages,3 figures
Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons
Creators: name: Cornejo, Juan M.
name: Lehnert, Ralf
name: Niemann, Malte
name: Mielke, Johannes
name: Meiners, Teresa
name: Bautista-Salvador, Amado
name: Schulte, Marius
name: Nitzschke, Diana
name: Borchert, Matthias J.
name: Hammerer, Klemens
name: Ulmer, Stefan
name: Ospelkaus, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cosmological observations as well as theoretical approaches to physics beyond the Standard Model provide strong motivations for experimental tests of fundamental symmetries, such as CPT invariance. In this context, the availability of cold baryonic antimatter at CERN has opened an avenue for ultrahigh-precision comparisons of protons and antiprotons in Penning traps. This work discusses an experimental method inspired by quantum logic techniques that will improve particle localization and readout speed in such experiments. The method allows for sympathetic cooling of the (anti-)proton to its quantum-mechanical ground state as well as the readout of its spin alignment, replacing the commonly used continuous Stern-Gerlach effect. Both of these features are achieved through coupling to a laser-cooled `logic' ion co-trapped in a double-well potential. This technique will boost the measurement sampling rate and will thus provide results with lower statistical uncertainty, contributing to stringent searches for time dependent variations in the data. Such measurements ultimately yield extremely high sensitivities to CPT violating coefficients acting on baryons in the Standard-Model Extension, will allow the exploration of previously unmeasured types of symmetry violations, and will enable antimatter-based axion-like dark matter searches with improved mass resolution.
description: Accepted for publication in New Journal of Physics
Light diffusion and localization in 3D nonlinear disordered media
Creators: name: Conti, Claudio
name: Angelani, Luca
name: Ruocco, Giancarlo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Using a 3D Finite-Difference Time-Domain parallel code, we report on the linear and nonlinear propagation of light pulses in a disordered assembly of scatterers, whose spatial distribution is generated by a Molecular Dynamics code; refractive index dispersion is also taken into account. We calculate the static and dynamical diffusion constant of light, while considering a pulsed excitation. Our results are in quantitative agreement with reported experiments, also furnishing evidence of a non-exponential decay of the transmitted pulse in the linear regime and in the presence of localized modes. By using an high power excitation, we numerically demonstrate the ``modulational instability random laser'': at high peak input powers energy is transferred to localized states from the input pulse, via third-order nonlinearity and optical parametric amplification, and this process is signed by a power-dependent non-exponential time-decay of the transmitted pulse.
description: 5 pages, 4 figures. Revised version with new figure 4 with localized states
A unified recognition and stereo vision system for size assessment
Creators: name: Naiberg, Andrew
Publisher: name: University of British Columbia
Year: 2009

description: This paper presents a unified recognition and stereo vision system which locates objects and determines their distances and sizes from stereo image pairs. Unlike other such systems, stereo information is not the input to the recognition stage. Instead, recognition is performed first and its output forms the input to stereo processing. This permits successful analysis of images captured in poor conditions (murky, specularities, poor camera alignment) and reduces time requirements. Model-based recognition is accomplished in two stages. The first stage seeks feature matches by comparing the absolute orientation, relative orientation and relative length of each image segment to those of the model segments in order to find chains of adjacent segments in the image which match those of the models. The absolute orientation constraint can be suppressed to permit identification of randomly-oriented objects. The second stage verifies candidate matches by comparing the relative locations of matched image features to the relative locations of the corresponding model features. The models them selves are generated semi-automatically from images of the desired objects. In addition to providing distance estimates, feature-based stereo information is used to disambiguate any multiple or questionable matches. Although the system and issues presented herein are quite general, the discussion and testing are primarily related to the motivating task of non-invasively assessing the size of sea-cage salmon.