cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytical solution of a Hubbard model extended by nearest neighbour Coulomb and exchange interaction on a triangle and tetrahedron
Creators: name: Schumann, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Hubbard model extended by either nearest-neighbour Coulomb correlation and/or nearest neighbour Heisenberg exchange is solved analytically for a triangle and tetrahedron. All eigenvalues and eigenvectors are given as functions of the model parameters in a closed form. The groundstate crossings and degeneracies are discussed both for the canonical and grand-canonical energy levels. The grand canonical potential and the electron occupation of the related cluster gases were calculated for arbitrary values (attractive and repulsive) of the three interaction constants. In the pure Hubbard model we found various steps in the electron occupation higher than one. It is shown that the various degeneracies of the grand-canonical energy levels are partially lifted by an antiferromagnetic exchange interaction, whereas a moderate ferromagnetic exchange modifies only slightly the results of the pure Hubbard model. A repulsive nn Coulomb correlation lifts these degeneracies completely. The relation of the cluster gas results to extended systems is discussed.
description: 115 pages, 20 figures. If you do not intend to work with the eigenvalues and eigenvectors do NOT print the appendices (92 pages), instead print pages 1-11 (article) and 103-115 (figures)
Hearing the Other: Communication as Shared Life
Creators: name: Risser, James
Publisher: name: Journal of Applied Hermeneutics
Year: 2019

description: In the phenomenological tradition, which took root in the first part of the twentieth century, the issue of intersubjectivity became prominent as a way of characterizing social life. But as seen in the work of Edith Stein, for example, this philosophy of intersubjectivity gives prominence to the subject, and as such it leaves open not only the question of the basic character of social life, but also the hermeneutic problem of understanding the other. The focus of my remarks in this paper will explore the way in which Gadamer moves beyond a philosophy of subjectivity in his effort to establish the conditions for communicative understanding. For Gadamer, communicative understanding only occurs through a genuine way of being with another. It requires not just being in relation to the other but a form of participation that amounts to an idea of shared life. Gadamer establishes the precise character of this shared life in relation to his critical encounter with Karl Löwith’s version of the I-Thou relation.
description: Journal of Applied Hermeneutics, 2019
A generalization of Colmez-Greenberg-Stevens formula
Creators: name: Xie, Bingyong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper we study the derivatives of Frobenius and the derivatives of Hodge-Tate weights for families of Galois representations with triangulations. We give a generalization of the Fontaine-Mazur L-invariant and use it to build a formula which is a generalization of the Colmez-Greenberg-Stevens formula.
description: To appear in "Bulletin of the Institute of Mathematics''
Simulation of lightning surges on transmission lines
Creators: name: Nguyen, Huyen V.
Publisher: name: University of British Columbia
Year: 2009

description: Computer simulations with programs such as the EMTP are widely accepted for lightning transient studies, to design the system in such a way that equipment failures and transmission line outages are prevented. In these studies, an accurate representation of the transmission lines and towers is required. Two new and improved time-domain models for the representation of these components are presented in this thesis. They are the frequency- dependent and the exponential transmission line models. The former is based on synthesizing the line functions directly in phase co-ordinates, and is used to represent multiphase transmission lines, while the latter is a single-phase model, which also synthesizes the line functions, to be used for tower representations. These models are valid for the required frequency range of 1 Hz to 1 MHz. They can be used for lightning studies as well as for many other types of transient studies. Extensive time-domain simulations have been performed to compare the results with those produced by existing line models. The results indicate that the new models are more accurate than some of the existing models, and numerically stable. Simulations of typical lightning surges have also been performed to compare the solutions produced by the developed models with actual measurements. With these new models, simulations match field recorded transient waveforms very well. In addition, a simple, fast and accurate method based on the Newton-Raphson iteration technique is introduced for finding transmission line modal parameters. It overcomes the eigenvector and eigenvalue switching problems experienced by most other methods. With a proper constraint equation for scaling the eigenvectors, this proposed method produces modal parameters which can reasonably be fitted with rational functions of minimum-phase type. With this, the modal transmission line modelling can be improved. The routine is very stable and can be used to diagonalize the Y Z product for uncommon lines with strong asymmetry. It has also been used to obtain the phase-domain parameters for the new frequency- dependent line model.
Controlling $T_c$ of Iridium Films Using the Proximity Effect
Creators: name: Hennings-Yeomans, R.
name: Chang, C. L.
name: Ding, J.
name: Drobizhev, A.
name: Fujikawa, B. K.
name: Han, S.
name: Karapetrov, G.
name: Kolomensky, Yu. G.
name: Novosad, V.
name: O'Donnell, T.
name: Ouellet, J. L.
name: Pearson, J.
name: Polakovic, T.
name: Reggio, D.
name: Schmidt, B.
name: Sheff, B.
name: Singh, V.
name: Smith, R. J.
name: Wang, G.
name: Welliver, B.
name: Yefremenko, V. G.
name: Zhang, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A superconducting Transition-Edge Sensor (TES) with low-$T_c$ is essential in a high resolution calorimetric detection. With a motivation of developing sensitive calorimeters for applications in cryogenic neutrinoless double beta decay searches, we have been investigating methods to reduce the $T_c$ of an Ir film down to 20 mK. Utilizing the proximity effect between a superconductor and a normal metal, we found two room temperature fabrication recipes of making Ir-based low-$T_c$ films. In the first approach, an Ir film sandwiched between two Au films, a Au/Ir/Au trilayer, has a tunable $T_c$ in the range of 20-100 mK depending on the relative thicknesses. In the second approach, a paramagnetic Pt thin film is used to create Ir/Pt bilayer with a tunable $T_c$ in the same range. We present detailed study of fabrication and characterization of Ir-based low-$T_c$ films, and compare the experimental results to theoretical models. We show that Ir-based films with predictable and reproducible critical temperature can be consistently fabricated for use in large scale detector applications.
description: 5 figures, accepted in the Journal of Applied Physics
Andreev bound states in rounded corners of d-wave superconductors
Creators: name: Iniotakis, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Andreev bound states at boundaries of d-wave superconductors are strongly influenced by the boundary geometry itself. In this work, the zero-energy spectral weight of the local quasiparticle density of states is presented for the case of wedge-shaped boundaries with rounded corners. Generally, both orientation of the d-wave and the specific local reflection properties of the rounded wedges determine, whether Andreev bound states exist or not. For the bisecting line of the wedge being parallel to the nodal direction of the d-wave gap function, strong zero-energy Andreev bound states are expected at the round part of the boundary.
Οι λειτουργικές μαρτυρίες στις γεροντικές διηγήσεις και αποφθέγματα
Creators: name: Στούπας, Κωνσταντίνος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Γεροντικό
Λειτουργικές μαρτυρίες
Αποφθέγματα
Liturgical testimonies
Narrations and sayings
Desert fathers

description: Η ζωή των αββάδων και αμμάδων της ερήμου είναι κατεξοχήν λειτουργική, δοξολο¬γική, ευχαριστιακή. Η ολοκάρδια επιθυμία τους να αφήσουν πίσω τους τον παλαιό άνθρωπο και τα πάθη και να επιτύχουν την πνευματική τους τελείωση και τον αγιασμό τους, τους οδηγεί να εγκαταλείψουν τον κόσμο και να φύγουν βαθιά στην έρημο, με σκοπό να επιδοθούν σε μια σκληρή και συνάμα επώδυνη πολλές φορές ἄσκηση. Η άσκηση αυτή έχει κόπο, δάκρυα, πτώσεις, αλλά και πνευματικά κατορθώματα, αγώνα διηνεκή, προκειμένου να κατευνάσουν τά πάθη και να βρεθούν εγγύτερα προς τον Θεό. Η καρδιακή και αδιάλειπτη προσευχή, η νηστεία και η εγκράτεια, η αγρυπνία, η ψαλμωδία, οι τεταγμένες καθ’ ημέραν εκκλησιαστικές ακολουθίες του Νυχθημέρου, τα Ιερά Μυστήρια, πρωτίστως δε η Θεία Λειτουργία και η ευχαριστιακή μετοχή του Σώματος και του Αίματος του Κυρίου, αποτελούν τα κύρια στοιχεία της μοναχικής ζωής. Αυτά απαρτίζουν τον μοναχικό κανόνα, η τήρηση του οποίου αποτελεί θεμελιώδη αρχή της μοναχικής ζωής. Μέσα από τις διηγήσεις και τα αποφθέγματά τους παρουσιάζουν τις αρχές της πνευματικής εν Χριστώ και κατά Χριστόν ζωής. Προβάλλεται το μεγαλείο του μοναχικού βίου και ομολογείται ο πλούτος, το βάθος και το μέγεθος της θείας λατρείας, η οποία μέσα από τον πλούτο των ιερών ακολουθιών της και των λατρευτικών κειμένων της, ανορθώνει τον αδύναμο και διαρκώς πίπτοντα άνθρωπο, τον παρηγορεί και τον ενισχύει στη δύσκολη πορεία του, αποτελεί εχέγγυο για την πνευματική του τελείωση και γεμίζει την καρδιά του με αγαλλίαση και ευφροσύνη πνευματική.
description: The life of avvadon and ammadon desert is eminently functional, doxological, Eucharistic. Their wholehearted desire to leave behind the old man and the passions and achieve spiritual perfection and the sanctification leads them to abandon the world and go deep into the desert, in order to engage in a hard and painful at the same time many Exercise times. This exercise is worthwhile, tears, falls, and spiritual achievements, perpetual struggle to appease passions and to come closer to God. Cardiac and unceasing prayer, fasting and abstinence, vigil, the chanting, the ordinates per day church services circadian, the Sacraments, above all the Holy Mass and Eucharistic share the Body and Blood of the Lord, are the main elements of the monastic life. These constitute the solitary rule, compliance with which is a fundamental principle of the monastic life. Through the stories and aphorisms show them the principles of the spiritual in Christ and Christ lives. It displays the splendor of monastic life and acknowledged the richness, depth and size of the liturgy, which through its wealth of sacred sequences and the cult of texts, lifts up the weak and constantly by falling man, consoles and strengthens him in difficult path, betokens the spiritual perfection and fills his heart with joy and spiritual gladness.
Characterization of the first true coaxial 18-fold segmented n-type prototype detector for the GERDA project
Creators: name: Abt, I.
name: Caldwell, A.
name: Gutknecht, D.
name: Kröninger, K.
name: Lampert, M.
name: Liu, X.
name: Majorovits, B.
name: Quirion, D.
name: Stelzer, F.
name: Wendling, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The first true coaxial 18-fold segmented n-type HPGe prototype detector produced by Canberra-France for the GERDA neutrinoless double beta-decay project was tested both at Canberra-France and at the Max-Planck-Institut fuer Physik in Munich. The main characteristics of the detector are given and measurements concerning detector properties are described. A novel method to establish contacts between the crystal and a Kapton cable is presented.
description: 21 pages, 16 Figures, to be submitted to NIM A
Speaking from Silence: On the Intimate Relation Between Silence and Speaking
Creators: name: Risser, James
Publisher: name: Journal of Applied Hermeneutics
Year: 2019

description: In understanding the world through language, silence, regarded simply as the absence of speech, appears to be the enemy of understanding. But in fact, it can be shown that silence is always a function of language. As we learn from Merleau-Ponty, Heidegger, and others, the relation between silence and the word of language is a positive one. There are acts of silence that can generate the movement towards meaning in language. The focus of my remarks in this paper will explore three modalities of silence that characterize the positive relation between silence and the word of language. First, there is silence as the withdrawal of the word. This is the silence of the voice that wants to hold back from speaking and to hold back the word from falling into chatter. Second, there is silence as giving voice to words. This is the silence that enacts the spacing within language that possibilizes the intentions of meaning within speech and the efforts of communicative understanding. Third, there is silence as the beginning of the word. This is the silence that stands in relation to a hidden or absent origin, such as an unknown god, generating thereby a word from silence that is a beginning.
description: Journal of Applied Hermeneutics, 2019
Ιδέες-αντιλήψεις παιδιών σχετικά με τις αιτίες, συνέπειες και τρόπους αντιμετώπισης της θαλάσσιας ρύπανσης: μια ποσοτική προσέγγιση
Creators: name: Μαλανδράκης, Γεώργιος
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Children's views and ideas about various environmental issues have a prominent role in the field of Environmental Education. The present study includes ideas οf 136 children concerning sources, consequences and actions that could reduce marine pollution. The research conducted in urban and suburban / rural areas and participated fifth and sixth grade students. Statistical analysis produced significant differences among ages of children and between classes and areas of living. Notable misconceptions and alternative conceptions were also observed.
description: Παιδαγωγική Επιθεώρηση, Vol. 27 (1998)
Cosmology with the Planck cluster sample
Creators: name: Geisbuesch, Joern
name: Hobson, Michael
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been long recognised that, besides being a formidable experiment to observe the primordial CMB anisotropies, Planck will also have the capability to detect galaxy clusters via their SZ imprint. In this paper constraints on cosmological parameters derivable from the Planck cluster candidate sample are examined for the first time as a function of cluster sample selection and purity obtained from realistic simulations of the microwave sky at the Planck observing frequency bands, observation process modelling and a cluster extraction pipeline. In particular, we employ a multi-frequency matched filtering (MFMF) method to recover clusters from mock simulations of Planck observations. Obtainable cosmological constraints under realistic assumptions of priors and knowledge about cluster redshifts are discussed. Just relying on cluster redshift abundances without making use of recovered cluster fluxes, it is shown that from the Planck cluster catalogue cosmological constraints comparable to the ones derived from recent primordial CMB power spectrum measurements can be achieved. For example, for a concordance $Λ$CDM model and a redshift binning of $Δz = 0.1$, the $1σ$ uncertainties on the values of $Ω_m$ and $σ_8$ are $ΔΩ_m \approx 0.031$ and $Δσ_8 \approx 0.014$ respectively. Furthermore, we find that the constraint of the matter density depends strongly on the prior which can be imposed on the Hubble parameter by other observational means.
description: 20 pages, 9 figures, submitted to MNRAS
Pulse Shape Discrimination of CsI(Tl) with a Photomultiplier Tube and MPPCs
Creators: name: Viet, Nguyen V. H.
name: Nomachi, M.
name: Takahisa, K.
name: Shima, T.
name: Khai, B. T.
name: Takaishi, R.
name: Miyamoto, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this study, we evaluate and compare the pulse shape discrimination (PSD) performance of multipixel photon counters (MPPCs, also known as silicon photomultiphers - SiPMs) with that of a typical photomultiplier tube (PMT) when testing using CsI(Tl) scintillators. We use the charge comparison method, whereby we discriminate different types of particles by the ratio of charges integrated within two time-gates (the delayed part and the entire digitized waveform). For a satisfactory PSD performance, a setup should generate many photoelectrons (p.e.) and collect their charges efficiently. The PMT setup generates more p.e. than the MPPC setup does. With the same digitizer and the same long time-gate (the entire digitized waveform), the PMT setup is also better in charge collection. Therefore, the PMT setup demonstrates better PSD performance. We subsequently test the MPPC setup using a new data acquisition (DAQ) system. Using this new DAQ, the long time-gate is extended by nearly four times the length when using the previous digitizer. With this longer time-gate, we collect more p.e. at the tail part of the pulse and almost all the charges of the total collected p.e. Thus, the PSD performance of the MPPC setup is improved significantly. This study also provides an estimation of the short time-gate (the delayed part of the digitized waveform) that can give a satisfactory PSD performance without an extensive analysis to optimize this gate.
Memories in Steel and Paper: A Spectacular Armor and its Representation In Early Modern Augsburg
Creators: name: Kirchhoff, Chassica
Publisher: name: Institut für Realienkunde des Mittelalters und der frühen Neuzeit
Year: 2019
Subjects: Erinnerungskultur
Gedächtnis
Rüstung
Roßharnisch
Buchmalerei
Maximilian I.
Burgund
Augsburg
Helmschmid
Thun-Hohenstein-Album
Cultures of remembrance
commemoration
armor
horse armor (bard)
book painting
Burgundy

description: Dieser Artikel untersucht eine Reihe von retrospektivischen Bildern, welche Maximilian I. als geharnischten Erzherzog von Österreich und Herzog von Burgund auf einem eindrucksvoll ausgerüsteten, von Kopf bis zu den Hufen gepanzerten Pferd reitend zeigen. Diese Kunstwerke, welche allesamt aus dem sechzehnten Jahrhundert stammen, nehmen an der frühneuzeitlichen Erinnerungskultur um die ritterliche Rolle Maximilians und an den posthumen Mythen um seine Person teil. Im Zentrum der Überlegungen steht eine Zeichnung, welche um 1540–1550 datiert und im sogenannten Thun-Hohenstein-Album gebunden ist. Diese Zeichnung kombiniert zwei frühere Gemälde, gegenwärtig in der Sammlung des Kunsthistorischen Museums Wien, welche zwei Triumphzüge durch die Städte Namur und Luxembourg im Jahre 1480 darstellen. Ein späteres Bild, entstanden um 1575 in Augsburg, zeigt dasselbe Motiv wie die Zeichnungen im Thun-Hohenstein Album: Es könnte sich demnach hier um eine Kopie handeln. Eingehende Untersuchungen zu diesen Bildern, ihren verschiedenen Kontexten und Bedeutungen, sowie zu den dargestellten Roßharnischen können die kontinuierliche Bedeutung von Rüstungen in der frühneuzeitlichen Erinnerungskultur des Heiliges Römisches Reiches demonstrieren. This article examines a lineage of retrospective images that portray Maximilian I as armored Archduke of Austria and Duke of Burgundy, riding a horse that is clad in impressive plate armor from its head to its hooves. These artworks, which span the sixteenth century, participate in the early modern cultures of remembrance that surround Maximilian’s knightly persona and posthumous mythos. The central image of the study is a drawing, created during the 1540s, that is bound into the so-called Thun-Hohenstein Album. This drawing synthesizes two earlier paintings, now in the Kunsthistorisches Museum in Vienna, that represent triumphal entries into the cities of Namur and Luxembourg in 1480. A later image, created in Augsburg around 1575, exactly parallels the drawing in the Thun album, which it may copy. Careful consideration of these images, their meanings and their different contexts of creation and reception, as well as the equine armor that they depict, demonstrates the persistent significance of armor in the early modern cultures of remembrance of the Holy Roman Empire.
description: MEMO Medieval and Early Modern Material Culture Online; Volume 2019 (4); Seitenzahl: x; ISSN: 2523-2932
Οι αντιλήψεις των δασκάλων και των γονιών για την πειθαρχία στο δημοτικό σχολείο
Creators: name: Κυριακίδης, Λεωνίδας
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: This paper reports and analyses findings from an investigation into Cypriot teachers' and parents' perceptions of national policy for discipline in primary schools. Questionnaires were sent to a representative sample of Cypriot teachers randomly selected (n=340) from the total population and to a representative sample of parents randomly selected from the total population (n=2300). A response rate of 75% was obtained and statistical analysis was carried out by SPSS, Interviews with 15 teachers and 10 parents who replied to the questionnaire were also conducted in order to measure the validity of the research. There were eight main findings. First, discipline is regarded as educative by Cypriot teachers. They believe that their responsibility is to help children realize the importance of following regulations in a school situation. They also consider rule abiding in schools of vital importance, since it helps children to realize that everybody has the right to be respected. On the other hand, parents see discipline as an important element in the process of socialization. They support that it is important that children follow the school regulations, because in this way they learn to be obedient to those who support them. Second, both teachers and parents support that instead of making negative and derogatory comments to children, they should try to make positive comments and systematically use praise and rewards following.This paper reports and analyses findings from an investigation into Cypriot teachers and parents' perceptions of national policy for discipline in primary schools. Questionnaires were sent to a representative sample of Cypriot teachers randomly selected (n=340) from the total population and 10 a representative sample of parent? randomly selected from the total population (n=23O0). A response rate of 75% was obtained and statistical analysis was carried out by SPSS. Interviews with 15 teachers and 10 parents who replied to the questionnaire were also conducted in order to measure the validity of the research. There were eight main findings. First, discipline is regarded as educative by Cypriot teachers. They believe that their responsibility is to help children realize the importance of following regulations in a school situation. They also consider rule abiding in schools of vital importance, since it helps children to realize that everybody has the right to be respected. On the other hand, parents see discipline as an important element in the process of socialization. They support that it is important that children follow the school regulations, because in this way they learn to be obedient to those who support them. Second, both teachers and parents support that instead of making negative and derogatory comments to children, they should try to make positive comments and systematically use praise and rewards following
description: Παιδαγωγική Επιθεώρηση, Vol. 27 (1998)
Sol-gel synthesis of Li3VO4/C composites as anode materials for lithium-ion batteries
Creators: name: Thauer, E.
name: Zakharova, G. S.
name: Wegener, S. A.
name: Zhu, Q.
name: Klingeler, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Li3VO4/C composites have been synthesized by a sol-gel method and post-annealing at 650 °C for 1 h in N2 flow using either tartaric acid, malic acid, or glucose as both chelating agents and carbon source. The presence of these organic additives crucially affects morphology and crystallite size of the final product. It is found that the electrochemical properties of Li3VO4/C as anode material for Li-ion batteries (LIBs) are influenced by the morphology, texture and carbon content of the material. When using carboxylic acids as carbon source composites with mesoporous structure and a high surface area are obtained that display an enhanced electrochemical activity. Initially, reversible capacity of about 400 mAh g-1 is obtained. In contrast, Li3VO4/C synthesized with glucose outperforms in terms of cycling stability. It exhibits a discharge capacity of 299 mAh g-1 after 100 cycles corresponding to an excellent capacity retention of 96 %. The favorable effect of carbon composites on the electrochemical performance of Li3VO4 is shown.
The prompt to late-time multiwavelength analysis of GRB 060210
Creators: name: Curran, P. A.
name: van der Horst, A. J.
name: Beardmore, A. P.
name: Page, K. L.
name: Rol, E.
name: Melandri, A.
name: Steele, I. A.
name: Mundell, C. G.
name: Gomboc, A.
name: O'Brien, P. T.
name: Bersier, D. F.
name: Bode, M. F.
name: Carter, D.
name: Guidorzi, C.
name: Hill, J. E.
name: Hurkett, C. P.
name: Kobayashi, S.
name: Monfardini, A.
name: Mottram, C. J.
name: Smith, R. J.
name: Wijers, R. A. M. J.
name: Willingale, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present our analysis of the multiwavelength photometric & spectroscopic observations of GRB 060210 and discuss the results in the overall context of current GRB models. All available optical data underwent a simultaneous temporal fit, while X-ray and gamma-ray observations were analysed temporally & spectrally. The results were compared to each other and to possible GRB models. The X-ray afterglow is best described by a smoothly broken power-law with a break at 7.4 hours. The late optical afterglow has a well constrained single power-law index which has a value between the two X-ray indices, though it does agree with a single power-law fit to the X-ray. An evolution of the hardness of the high-energy emission is demonstrated and we imply a minimum host extinction from a comparison of the extrapolated X-ray flux to that measured in the optical. We find that the flaring gamma-ray and X-ray emission is likely due to internal shocks while the flat optical light curve at that time is due to the external shock. The late afterglow is best explained by a cooling break between the optical and X-rays and continued central engine activity up to the time of the break. The required collimation corrected energy of ~ 2x10^52 erg, while at the high end of the known energy distribution, is not unprecedented.
description: 8 pages, 4 figures, accepted to Astronomy & Astrophysics after minor changes
Το σχολικό κλίμα στην Πρωτοβάθμια Εκπαίδευση: ένας σημαντικός παράγοντας της αξιολόγησης και αποτελεσματικότητας της σχολικής μονάδας
Creators: name: Καβούρη, Παναγιώτα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: This study investigates the organizational climate perceived by 444 teachers in 42 state primary schools in Greece, and its relationship with teacher, head teacher and school (OCDQ-RE) instrument of Hoy and Clover (1986). The OCDQ-RE is a standardized questionnaire which provides an instrument for measuring teachers' perceptions of teacher-teacher and headteacher-teacher social interaction. Findings reveal four school profiles: open, almost disengaged, almost closed and closed. The best predictors of school openness are school's low socio-economic level and teachers' age and experience. From the results some implications may be advanced for ongoing policy discussion in the field of educational administration and school improvement in Greece.
description: Παιδαγωγική Επιθεώρηση, Vol. 27 (1998)
Ageing, dynamical scaling and its extensions in many-particle systems without detailed balance
Creators: name: Henkel, Malte
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Recent studies on the phenomenology of ageing in certain many-particle systems which are at a critical point of their non-equilibrium steady-states, are reviewed. Examples include the contact process, the parity-conserving branching-annihilating random walk, two exactly solvable particle-reaction models and kinetic growth models. While the generic scaling descriptions known from magnetic system can be taken over, some of the scaling relations between the ageing exponents are no longer valid. In particular, there is no obvious generalization of the universal limit fluctuation-dissipation ratio. The form of the scaling function of the two-time response function is compared with the prediction of the theory of local scale-invariance.
description: Latex2e with IOP macros, 32 pages; extended discussion on contact process and new section on kinetic growth processes
A model of the effect of collisions on QCD plasma instabilities
Creators: name: Schenke, Bjoern
name: Strickland, Michael
name: Greiner, Carsten
name: Thoma, Markus H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the effect of including a BGK collisional kernel on the collective modes of a QCD plasma which has a hard-particle distribution function which is anisotropic in momentum space. We calculate dispersion relations for both the stable and unstable modes and show that the addition of hard particle collisions slows the rate of growth of QCD plasma unstable modes. We also show that for any anisotropy there is an upper limit on the collisional frequency beyond which no instabilities exist. Estimating a realistic value for the collisional frequency for alpha_s ~ 0.2 - 0.4 we find that for the large-anisotropy case which is relevant for the initial state of matter generated by free streaming in heavy-ion collisions that the collisional frequency is below this critical value.
description: 15 pages, 12 figures
Small Deviations of Smooth Stationary Gaussian Processes
Creators: name: Aurzada, F.
name: Ibragimov, I. A.
name: Lifshits, M. A.
name: van Zanten, J. H.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G10, 60G15, 46E15, 62A15

description: We investigate the small deviation probabilities of a class of very smooth stationary Gaussian processes playing an important role in Bayesian statistical inference. Our calculations are based on the appropriate modification of the entropy method due to Kuelbs, Li, and Linde as well as on classical results about the entropy of classes of analytic functions. They also involve Tsirelson's upper bound for small deviations and shed some light on the limits of sharpness for that estimate.
A Student's Handbook For Digital Marketing Strategies
Creators: name: org, ilpraf.
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 350303
subject: Business information systems

description: In the dynamic world of digital marketing, success relies on adeptly navigating diverse online tools and platforms. Digital marketing strategically uses online channels to connect with a specific audience, engaging potential customers through various touchpoints to drive actions like purchases or form completions. Key elements include SEO for better online visibility, SEM for paid advertising, SMM for audience interaction, and Content Marketing through various formats. Email, Affiliate, and Influencer Marketing, along with Online PR, contribute to brand promotion and reputation management. Analytics and Data Analysis tools facilitate data-driven decision-making, allowing businesses to target demographics, monitor real-time campaign effectiveness, and adapt strategies. Digital marketing is now an essential part of the marketing mix, offering global reach and adaptability to evolving consumer behavior in the digital age.
The Hall instability of thin weakly-ionized stratified Keplerian disks
Creators: name: Shtemler, Yuri M.
name: Mond, Michael
name: Liverts, Edward
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The stratification-driven Hall instability in a weakly ionized polytropic plasma is investigated in the local approximation within an equilibrium Keplerian disk of a small aspect ratio. The leading order of the asymptotic expansions in the aspect ratio is applied to both equilibrium as well as the perturbation problems. The equilibrium disk with an embedded purely toroidal magnetic field is found to be stable to radial, and unstable to vertical short-wave perturbations. The marginal stability surface is found in the space of the local Hall and inverse plasma beta parameters, as well as the free parameter of the model which is related to the total current through the disk. To estimate the minimal values of the equilibrium magnetic field that leads to instability, the latter is constructed as a sum of a current free magnetic field and the simplest approximation for magnetic field created by a distributed electric current.
description: 13 pages, 7 figures
When Words Fail: On the Power of Language in Human Experience
Creators: name: Risser, James
Publisher: name: Journal of Applied Hermeneutics
Year: 2019

description: Beyond the ordinariness of experience in daily life there are times when we encounter an experience for which words seem inadequate to express and communicate the experience. The focus of my remarks for the first paper will explore this situation of the potential limits of language for understanding experience. The question of these limits depends on an analysis of just what takes place in experience and (the hermeneutic experience of) language. Drawing on Hans-Georg Gadamer’s hermeneutic theory for an answer to the question, I will show just how experience and language are interrelated, and, as a result, I will show how the dynamic of language formation expands to accommodate what appears to be inaccessible and inexpressible, while allowing experience to sustain its own richness.
description: Journal of Applied Hermeneutics, 2019
On some meaningful inner product for real Klein-Gordon fields with positive semi-definite norm
Creators: name: Kleefeld, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A simple derivation of a meaningful, manifestly covariant inner product for real Klein-Gordon (KG) fields with positive semi-definite norm is provided which turns out - assuming a symmetric bilinear form - to be the real-KG-field limit of the inner product for complex KG fields reviewed by A. Mostafazadeh and F. Zamani in December, 2003, and February, 2006 (quant-ph/0312078, quant-ph/0602151, quant-ph/0602161). It is explicitly shown that the positive semi-definite norm associated with the derived inner product for real KG fields measures the number of active positive and negative energy Fourier modes of the real KG field on the relativistic mass shell. The very existence of an inner product with positive semi-definite norm for the considered real, i.e. neutral, KG fields shows that the metric operator entering the inner product does not contain the charge-conjugation operator. This observation sheds some additional light on the meaning of the C operator in the CPT inner product of PT-symmetric Quantum Mechanics defined by C.M. Bender, D.C. Brody and H.F. Jones.
description: 8 pages, no figures; correction of obvious typos and marginal improvement of formulations
Η Συναίνεση στις Μεταμοσχεύσεις
Creators: name: Μπαλάκος, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Συναίνεση
Μεταμοσχεύσεις
Δότες Οργάνων
Consent
Transplantations
Organ Donors

description: Η παρούσα εργασία διαπραγματεύεται το θέμα της συναίνεσης στο πεδίο των μεταμοσχεύσεων. Αρχικά, εξετάζεται το ζήτημα της συναίνεσης από συνταγματική σκοπιά και καθώς αναλύεται η νομοθεσία για τις μεταμοσχεύσεις προσεγγίζονται τα αστικά και ποινικά ζητήματα που εγείρονται σχετικά. Εξετάζεται η συναίνεση ανάλογα με το είδος της μεταμόσχευσης (από νεκρό, ζώντα και συναισθηματικό δότη) και τέλος, αναλύονται τα διάφορα συστήματα συναίνεσης καθώς και το ισχύον σύστημα ως προς τη συναίνεση για τις μεταμοσχεύσεις.
description: The present assignment deals with the issue of consent in the area of transplantations. First of all, it is investigated the issue of consent from constitutional view and as long as it is analyzed the legislation of transplantations, we approach the civil and criminal issues that occur relatively. The issue of consent is examined depending on the kind of the transplantation (from living, dead and emotional donor) and at the end, are analyzed the various systems of consent and also the current transplantation system.
Gravitational Loss-Cone Instability in Stellar Systems with Retrograde Orbit Precession
Creators: name: Polyachenko, E. V.
name: Polyachenko, V. L.
name: Shukhman, I. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study spherical and disk clusters in a near-Keplerian potential of galactic centers or massive black holes. In such a potential orbit precession is commonly retrograde, i.e. direction of the orbit precession is opposite to the orbital motion. It is assumed that stellar systems consist of nearly radial orbits. We show that if there is a loss cone at low angular momentum (e.g., due to consumption of stars by a black hole), an instability similar to loss-cone instability in plasma may occur. The gravitational loss-cone instability is expected to enhance black hole feeding rates. For spherical systems, the instability is possible for the number of spherical harmonics $l \ge 3$. If there is some amount of counter-rotating stars in flattened systems, they generally exhibit the instability independently of azimuthal number $m$. The results are compared with those obtained recently by Tremaine for distribution functions monotonically increasing with angular momentum. The analysis is based on simple characteristic equations describing small perturbations in a disk or a sphere of stellar orbits highly elongated in radius. These characteristic equations are derived from the linearized Vlasov equations (combining the collisionless Boltzmann kinetic equation and the Poisson equation), using the action-angle variables. We use two techniques for analyzing the characteristic equations: the first one is based on preliminary finding of neutral modes, and the second one employs a counterpart of the plasma Penrose-Nyquist criterion for disk and spherical gravitational systems.
description: Accepted to Monthly Notices of the Royal Astronomical Society; typos added
Hotspot Prediction of Severe Traffic Accidents in the Federal District of Brazil
Creators: name: Lima, Vinicius
name: Byrd, Vetria
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Traffic accidents are one of the biggest challenges in a society where commuting is so important. What triggers an accident can be dependent on several subjective parameters and varies within each region, city, or country. In the same way, it is important to understand those parameters in order to provide a knowledge basis to support decisions regarding future cases prevention. The literature presents several works where machine learning algorithms are used for prediction of accidents or severity of accidents, in which city-level datasets were used as evaluation studies. This work attempts to add to the diversity of research, by focusing mainly on concentration of accidents and how machine learning can be used to predict hotspots. This approach demonstrated to be a useful technique for authorities to understand nuances of accident concentration behavior. For the first time, data from the Federal District of Brazil collected from forensic traffic accident analysts were used and combined with data from local weather conditions to predict hotspots of collisions. Out of the five algorithms we considered, two had good performance: Multi-layer Perceptron and Random Forest, with the latter being the best one at 98% accuracy. As a result, we identify that weather parameters are not as important as the accident location, demonstrating that local intervention is important to reduce the number of accidents.
description: Published at The Twelfth International Conference on Smart Cities, Systems, Devices and Technologies SMART 2023 https://www.thinkmind.org/index.php?view=article&articleid=smart_2023_1_60_40032
Evaluating Catchment Models as Multiple Working Hypotheses: on the Role of Error Metrics, Parameter Sampling, Model Structure, and Data Information Content
Creators: name: Khatami, Sina
name: Peterson, Timothy John
name: Peel, Murray C
name: Western, Andrew
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Geophysics (physics.geo-ph)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: To evaluate models as hypotheses, we developed the method of Flux Mapping to construct a hypothesis space based on dominant runoff generating mechanisms. Acceptable model runs, defined as total simulated flow with similar (and minimal) model error, are mapped to the hypothesis space given their simulated runoff components. In each modeling case, the hypothesis space is the result of an interplay of factors: model structure and parameterization, chosen error metric, and data information content. The aim of this study is to disentangle the role of each factor in model evaluation. We used two model structures (SACRAMENTO and SIMHYD), two parameter sampling approaches (Latin Hypercube Sampling of the parameter space and guided-search of the solution space), three widely used error metrics (Nash-Sutcliffe Efficiency - NSE, Kling-Gupta Efficiency skill score - KGEss, and Willmott refined Index of Agreement - WIA), and hydrological data from a large sample of Australian catchments. First, we characterized how the three error metrics behave under different error types and magnitudes independent of any modeling. We then conducted a series of controlled experiments to unpack the role of each factor in runoff generation hypotheses. We show that KGEss is a more reliable metric compared to NSE and WIA for model evaluation. We further demonstrate that only changing the error metric -- while other factors remain constant -- can change the model solution space and hence vary model performance, parameter sampling sufficiency, and or the flux map. We show how unreliable error metrics and insufficient parameter sampling impair model-based inferences, particularly runoff generation hypotheses.
Στάσεις μαθητών σχολικής ηλικίας απέναντι στον έπαινο, τις αμοιβές, τις τιμωρίες και την επίπληξη
Creators: name: Ανδρέου, Ελένη
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: The study investigated the attitudes of Greek primary school pupils to praise, rewards, punishments and reprimands. The PRPR attitude questionnaire was given to a sample of 1.037 pupils from the 3rd to the 6th year junior classes. Generally, the study indicates that primary aged pupils have definite ideas about the effectiveness of praise, rewards, punishments and reprimands in school. The great majority of pupils consider rewards and praise to be more suitable for academic than for social behavior and thought, on the whole, that the amount of praise and blame they received in school was about right, although the number of boys believing that they received too much punishment always exceeded that of girls across all the age groups. Also, they said that they valued the opinions of their teachers above of their peers in relation to both their work and their behavior. Being sent to Headmaster/Headmistress was consider the most effective punishment for poor work and bad behavior and praise from he teacher the most effective reward for good work\k and good behavior. Both for praising and as a punishment letter sent from school to parents was believed to be very potent. This underlines the importance of close collaboration between home and school. The paper concludes that pupil’s opinion about what incentives and sanctions are appropriate in different situations should be seriously taken into account by teachers in order to motivate their pupils and change undesired academic and social behaviors un the school context.
description: Παιδαγωγική Επιθεώρηση, Vol. 27 (1998)
The Difficulty of Understanding: An Introduction
Creators: name: Risser, James
Publisher: name: Journal of Applied Hermeneutics
Year: 2019

description: In June 2019, Dr. James Risser was the invited scholar for the Canadian Hermeneutic Institute (CHI), held in Calgary, Alberta, Canada. Dr. Risser is a professor of philosophy at Seattle University and the Senior Research Fellow at Western Sydney University. He is also the editor of the journal Research in Phenomenology. He has held philosophy Chairs and is a prolific writer of books and articles in the areas of continental philosophy and philosophical hermeneutics. This paper is the introduction to the three-day event of the CHI, and his beginning introduction to his papers. It is followed by three papers entitled When Words Fail: On the Power of Language and Human Experience; Speaking from Silence: On the Intimate Relation Between Silence and Speaking; and Hearing the Other: Communication as Shared Life.
description: Journal of Applied Hermeneutics, 2019