cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sustainable Economic Development in India and Performance of Regional Rural banks in India - Exploring the Causal Relationship
Creators: name: Ratchana Rajendran
name: Dr Ramani D
Publisher: name: figshare
Year: 2021
Subjects: subject: 150299 Banking, Finance and Investment not elsewhere classified
subject: FOS: Economics and business
subject: 150203 Financial Institutions (incl. Banking)
subject: 140304 Panel Data Analysis

description: According to the World Bank data (2018), Rural India contributes to about 27% of the rural population of the world and around 67% of the total population of India. With the rural economy being the backbone of sustainable economic development of India and its significant contribution to the Gross Domestic Product, it is essential for the government and the policy makers to lay emphasis on improving the rural financing activity through organised institutions like Regional Rural Banks. This paper attempts to explore the causal relationship between performance of Regional Rural banks (RRBs) and Sustainable Development Goals (SDGs) in India for the period 2000-2018. The study is quantitative in nature. An empirical analysis of the Sustainable Development Goals (SDGs) and Regional Rural Bank's performance indicators are executed using descriptive statistics, correlation and multiple regression analysis for the period 2000-2018. Data is collected from various websites, reports and databases of UNDP, World Bank, RBI, NABARD and Regional Rural Banks in India. The unit root and Granger Causality Tests were used to examine the direction of causality between the variables in the study. This paper aims to understand the stimulus provided by RRBs in India on the achievement of select SDG indicators.
Optimizing interferometer experiments for CMB B mode measurement
Creators: name: Kim, Jaiseung
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The sensitivity of interferometers with linear polarizers to the CMB E and B mode are variant under the rotation of the polarizer frame, while interferometer with circular polarizers are equally sensitive to E and B mode. We present analytically and numerically that the diagonal elements of window functions for CMB E/B power spectra are maximized in interferometric measurement of linear polarization, when the polarizer frame is in certain rotation from the associated baseline. We also present the simulated observation to show that the 1-$σ$ errors on E/B mode power spectrum estimation are variant under the polarizer frame rotation in the case of linear polarizers, while they are invariant in the case of circular polarizers. Simulation of the configuration similar to the DASI shows that minimum 1-$σ$ error on B mode in interferometer measurement with linear polarizers is 26% of that in interferometric measurement with circular polarizers. The simulation also shows that the E/B mixing in interferometer measurement with linear polarizers can be as low as 23% of that in interferometric measurement with circular polarizers. It is not always possible to physically align the polarizer frame with all the associated baselines in the case of an interferometer array (N$>$2). There exist certain linear combinations of visibilities, which are equivalent to visibilities of the optimal polarizer frame rotation. We present the linear combinations, which enables B mode optimization for an interferometer array (N$>$2).
description: v2: file error corrected, v3: a footnote added, v4: a typo corrected v10: some pdf file problem fixed
Relation of coronal rain originating from coronal condensations to interchange magnetic reconnection
Creators: name: Li, Leping
name: Peter, Hardi
name: Chitta, Lakshmi Pradeep
name: Song, Hongqiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Using extreme-ultraviolet images, we recently proposed a new and alternative formation mechanism for coronal rain along magnetically open field lines due to interchange magnetic reconnection. In this paper we report coronal rain at chromospheric and transition region temperatures originating from the coronal condensations facilitated by reconnection between open and closed coronal loops. For this, we employ the Interface Region Imaging Spectrograph (IRIS) and the Atmospheric Imaging Assembly (AIA) of the Solar Dynamics Observatory (SDO). Around 2013 October 19, a coronal rain along curved paths was recorded by IRIS over the southeastern solar limb. Related to this, we found reconnection between a system of higher-lying open features and lower-lying closed loops that occurs repeatedly in AIA images. In this process, the higher-lying features form magnetic dips. In response, two sets of newly reconnected loops appear and retract away from the reconnection region. In the dips, seven events of cooling and condensation of coronal plasma repeatedly occur due to thermal instability over several days, from October 18 to 20. The condensations flow downward to the surface as coronal rain, with a mean interval between condensations of 6.6 hr. In the cases where IRIS data were available we found the condensations to cool all the way down to chromospheric temperatures. Based on our observations we suggest that some of the coronal rain events observed at chromospheric temperatures could be explained by the new and alternative scenario for the formation of coronal rain, where the condensation is facilitated by interchange reconnection.
description: 21 pages, 3 tables, 9 figures, accepted for publication in ApJ
Ιδέες και αναπαραστάσεις παιδιών προσχολικής ηλικίας για τις ηλεκτρικές συσκευές και το ηλεκτρικό ρεύμα
Creators: name: Σολομωνίδου, Χριστίνα
name: Κακανά, Δόμνα-Μίκα
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
The Overdense Environment of a Large Lyman-alpha Nebula at z~2.7
Creators: name: Prescott, M. K. M.
name: Kashikawa, N.
name: Dey, A.
name: Matsuda, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Large nebulae (>50 kpc) emitting strongly in Lya (also known as Lya ``blobs'') are likely signposts of ongoing massive galaxy formation. The relative rarity of these sources and their discovery in well-studied galaxy overdensities suggest that they may be associated with regions of high galaxy density. One of the largest Lya nebulae, discovered at a redshift of z~2.7 via its strong mid-infrared emission, provides an unbiased test of this association. We have carried out a deep intermediate-band imaging survey for Lya-emitting galaxies (LAEs) within a 30'x26' field of view around this Lya nebula. This is the first study of the environment of a Lya nebula found without a priori knowledge of its surroundings. We find that the nebula is located in an overdense region, at least 20x50 1/h_70 comoving Mpc in size, showing a factor of ~3 LAE number density enhancement relative to the edge of the field. Given the predicted number of such overdensities, we rule out the possibility of a chance coincidence at the <1% level. This study, in conjunction with previous work, provides strong confirmation of the association between the largest Lya nebulae and overdense regions of the Universe.
description: Accepted for publication in ApJL; 8 pages, 4 figures, emulateapj format
Προϊστορικά νεκροταφεία Μακεδονίας. Το νεκροταφείο της πρώιμης εποχής του Χαλκού στην Πέλλα: η μελέτη των ανθρώπινων σκελετικών καταλοίπων
Creators: name: Καλλιγά, Ελένη Ανέστη
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Πρώιμη εποχή του Χαλκού
Πέλλα
Ανθρώπινα σκελετικά κατάλοιπα
Early Bronze Age
Pella
Human skeletal remains

description: Η μεταπτυχιακή εργασία αφορά στα αποτελέσματα της μελέτης των ανθρώπινων σκελετικών καταλοίπων από το νεκροταφείο της πρώιμης εποχής του Χαλκού στην Πέλλα. Αρχικά, πραγματοποιήθηκε μια σύντομη αναδρομή στην ιστορία της έρευνας των νεκροταφείων της πρώιμης εποχής του Χαλκού στο Αιγαίο καθώς και στις μελέτες του προϊστορικού ανθρωπολογικού υλικού στον ελλαδικό χώρο. Στη συνέχεια, έγινε μια προσπάθεια ανασύστασης του γεωγραφικού πλαισίου και του φυσικού περιβάλλοντος της Πέλλας και πραγματοποιήθηκε μια αναδρομή στο ευρύτερο αρχαιολογικό πλαίσιο στη Μακεδονία κατά την πρώιμη εποχή του Χαλκού. Επιπλέον, συζητήθηκαν ζητήματα ταφονομίας και του τρόπου μεταχείρισης των νεκρών στο συγκεκριμένο νεκροταφείο και στη συνέχεια παρουσιάστηκε η μεθοδολογία της μελέτης του οστεολογικού υλικού. Παρουσιάστηκαν τα αποτελέσματα της παλαιοδημογραφικής και της παλαιοπαθολογικής μελέτης, τα οποία στη συγκρίθηκαν με τα δεδομένα πληθυσμών της πρώιμης εποχής του Χαλκού της Μακεδονίας που έχουν μελετηθεί έως σήμερα. Ειδικότερα, παρουσιάστηκαν πιθανές ερμηνείες σχετικά με τη σύνθεση, τις διατροφικές συνήθειες και τα γενικότερα επίπεδα υγείας του συγκεκριμένου δείγματος πληθυσμού.
description: The present master thesis focuses on the results of the human skeletal remains’ analysis from the Early Bronze Age cemetery at Pella. Initially, there is a retrospection to the history of research study of the Early Bronze Age cemeteries in the Aegean, as well as to the analyses of prehistoric human remains in Greece. Furthermore, an attempt is made to reconstruct the geographical and physical environment of Pella and to retrospect to the archaeological context of Macedonia during the Early Bronze Age. Additionally, matters of taphonomy and of manipulation of the deceased at the cemetery are discussed, and the methodology of the skeletal remains analysis is presented. The results of the palaeodemographic and palaeopathological analyses are presented, compared to the data from – up until now- studied Early Bronze Age populations of Macedonia. Particularly, possible interpretations regarding the synthesis, the diet and the health status of the specific population sample are presented.
Simulation of contact textures and forces with application to haptic interfaces
Creators: name: Siira, Juhani
Publisher: name: University of British Columbia
Year: 2009

description: This thesis will consider the simulation and display of contact forces as currently present in much of the robotics literature. In particular, the following two issues are addressed. Texture forces are not currently routinely included in haptic display algorithms, nor are there comprehensive frameworks for using physical parameters to generate realistic texture forces. Algorithms are required which combine implementation ease with minimal computation requirements. This thesis will present one such algorithm, which has been shown to produce realistic feeling texture forces by generating force pulses at high bandwidth. The algorithm has the potential to use physical measures of surface roughness to produce accurate texture forces. Much of the contact simulation currently presented uses the spring/damper as a surface model. Although the spring/damper can be an accurate model for impact, it is not generally nearly as applicable to low-speed or quasi-static load cycling, and it requires careful consideration when applied to multi-point contact situations (when naive application can cause incorrect results). The shortcomings of the spring/damper system are exposed, and an alternative model is presented which corrects the deficiencies of the spring/damper, without greatly increasing implementation complexity. Some of the features of the new model include energy dissipation during quasi-static cycling, correct multi-point contact behaviour without modification, and a clearly established equilibrium transition time, which can be beneficial in maintaining subsets of active objects in a complicated simulation.
Raising and Lowering Operators for Askey-Wilson Polynomials
Creators: name: Sahi, Siddhartha
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In this paper we describe two pairs of raising/lowering operators for Askey-Wilson polynomials, which result from constructions involving very different techniques. The first technique is quite elementary, and depends only on the ''classical'' properties of these polynomials, viz. the q-difference equation and the three term recurrence. The second technique is less elementary, and involves the one-variable version of the double affine Hecke algebra.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Τέχνη και Ιστορία: διδακτική προσέγγιση έργων της γεωμετρικής τέχνης ως ιστορικής πηγής
Creators: name: Σιούρλα, Βασιλική
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Thema der vorliegenden Arbeit ist die didaktische Annäherung an Kunstwerke des geometrischen Stils als historische Quellen. Diese Annäherung ist in vier Abschnitte gegliedert. Im ersten geht es um die vorn Lehrer zu treffende Auswahl geeigneter typischer Kunstwerke des geometrischen Stils, um die Frage nach dem realen oder mythischen Charakter der dargestellten Szenen und Figuren, um die für die Erzielung möglichst objektiver Ergebnisse angemessene Methode der Betrachtung sowie um die Bestimmung de: Ziele des didaktischen Projekts, im zweiter. Abschnitt geht es - auf der Basis der ausgeführten theoretischen Uberle-guigett um die praktische Durchführung des didaktischen Vorhabens, und zwar in den folgenden sechs Schritten: Vorstellung der Kunstwerke und deren Bc;rachlung durch die Schüler; eine unbefangene erste Beschreibung der Kunstwerke und die sich daraus ergebende Formulierung einer vorläufigen These; Vertiefung des Themas unter Heranziehung aller verfügbaren anderen Quellen, gegebenenfalls Umformulierung der vorläufigen These auf Grund des gesammelten anderweitigen Materials; Überprüfung der erweiterten bzw. vertieften These an den Kunstwerken und evtl. Klärung von Widersprüchen; schließlich Zusammenstellung der gewonnenen Erkenntnisse im Hinblick auf eine historische Interpretation der Kunstwerke. Der dritte Abschnitt stellt Vorschläge zur Verliefung und Ausweitung des didaktischen Projekts vor, und im vierten und letzten Abschnitt wird eine von den Schülern zu bearbeitende Übungsaufgabe zu dem behandelten Thema vorgeschlagen.
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
Dynamical entanglement and chaos: the case of Rydberg molecules
Creators: name: Lombardi, M
name: Matzkin, A
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Rydberg molecule is composed of an outer electron that collides on the residual ionic core. Typical states of Rydberg molecules display entanglement between the outer electron and the core. In this work we quantify the average entanglement of molecular eigenstates and further investigate the time evolution of entanglement production from initially unentangled states. The results are contrasted with the underlying classical dynamics, obtained from the semiclassical limit of the core-electron collision. Our findings indicate that entanglement is not simply correlated with the degree of classical chaos, but rather depends on the specific phase-space features that give rise to inelastic scattering. Hence mixed phase-space or even regular classical dynamics can be associated with high entanglement generation.
Measurements of the Hubble constant and cosmic curvature with quasars: ultra-compact radio structure and strong gravitational lensing
Creators: name: Qi, Jing-Zhao
name: Zhao, Jia-Wei
name: Cao, Shuo
name: Biesiada, Marek
name: Liu, Yuting
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Although the Hubble constant $H_0$ and spatial curvature $Ω_{K}$ have been measured with very high precision, they still suffer from some tensions. In this paper, we propose an improved method to combine the observations of ultra-compact structure in radio quasars and strong gravitational lensing with quasars acting as background sources to determine $H_0$ and $Ω_{K}$ simultaneously. By applying the distance sum rule to the time-delay measurements of 7 strong lensing systems and 120 intermediate-luminosity quasars calibrated as standard rulers, we obtain stringent constraints on the Hubble constant ($H_0=78.3\pm2.9 \mathrm{~km~s^{-1}~Mpc^{-1}}$) and the cosmic curvature ($Ω_K=0.49\pm0.24$). On the one hand, in the framework of a flat universe, the measured Hubble constant ($H_0=73.6^{+1.8}_{-1.6} \mathrm{~km~s^{-1}~Mpc^{-1}}$) is strongly consistent with that derived from the local distance ladder, with a precision of 2\%. On the other hand, if we use the local $H_0$ measurement as a prior, our results are marginally compatible with zero spatial curvature ($Ω_K=0.23^{+0.15}_{-0.17}$) and there is no significant deviation from a flat universe. Finally, we also evaluate whether strongly lensed quasars would produce robust constraints on $H_0$ and $Ω_{K}$ in the non-flat and flat $Λ$CDM model if the compact radio structure measurements are available from VLBI observations.
description: 7 pages, 4 figures
Σειρές Hilbert για πεπερασμένα παραγόμενα Modules
Creators: name: Αντωνίου, Αντωνία Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2015
Subjects: Πρότυπο
Πεπερασμένα παραγόμενο
Σειρά
Module
Finitely generated
Series

description: Σκοπός της διπλωματικής εργασίας είναι η μελέτη των σειρών Hilbert για πεπερασμένα παραγόμενα πρότυπα.Ξεκινάμε δίνοντας κάποιες εισαγωγικές έννοιες για τα βαθμωτά πρότυπα.Συνεχίζουμε ορίζοντας τις ακέραιες συναρτήσεις πολυωνυμικού τύπου και τις συναρτήσεις και σειρές Hilbert.Το κύριο αποτέλεσμα της εργασίας είναι ένα θεώρημα το οποίο χαρακτηρίζει τις συναρτήσεις και σειρές Hilbert των πεπερασμένα παραγόμενων βαθμωτών προτύπων.Τέλος δίνουμε μερικά παραδείγματα και απαντούμε στο ερώτημα ποιος είναι ο αριθμητής των σειρών Hilbert.
description: The aim of the present thesis is the study of Hilbert series of finitely generated modules.We start by giving some introductory notions for graded modules.We continue by defining the integer functions of polynomial type and the Hilbert functions and series.The main result is a theorem that characterizes the Hilbert functions and series of finitely generated graded modules.In the end we give some examples and we answer to the question of who is the numerator of Hilbert series.
Περιβάλλον και εκπαίδευση από τη σκοπιά των εκπαιδευτικών μια εμπειρική διερεύνηση
Creators: name: Παπαναούμ, Ζωή
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
Control of quantum electrodynamical processes by shaping electron wavepackets
Creators: name: Wong, Liang Jie
name: Rivera, Nicholas
name: Murdia, Chitraang
name: Christensen, Thomas
name: Joannopoulos, John D.
name: Soljačić, Marin
name: Kaminer, Ido
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Fundamental quantum electrodynamical (QED) processes such as spontaneous emission and electron-photon scattering encompass a wealth of phenomena that form one of the cornerstones of modern science and technology. Conventionally, calculations in QED and in other field theories assume that incoming particles are single-momentum states. The possibility that coherent superposition states, i.e. "shaped wavepackets", will alter the result of fundamental scattering processes is thereby neglected, and is instead assumed to sum to an incoherent (statistical) distribution in the incoming momentum. Here, we show that free-electron wave-shaping can be used to engineer quantum interferences that alter the results of scattering processes in QED. Specifically, the interference of two or more pathways in a QED process (such as photon emission) enables precise control over the rate of that process. As an example, we apply our concept to Bremsstrahlung, a ubiquitous phenomenon that occurs, for instance, in X-ray sources for state-of-the-art medical imaging, security scanning, materials analysis, and astrophysics. We show that free electron wave-shaping can be used to tailor both the spatial and the spectral distribution of emitted photons, enhancing their directionality and monochromaticity, and adding more degrees of freedom that make emission processes like Bremsstrahlung more versatile. The ability to tailor the spatiotemporal attributes of photon emission via quantum interference provides a new degree of freedom in shaping radiation across the entire electromagnetic spectrum. More broadly, the ability to tailor general QED processes through the shaping of free electrons opens up new avenues of control in processes ranging from optical excitation processes (e.g., plasmon and phonon emission) in electron microscopy to free electron lasing in the quantum regime.
description: 25 pages, 5 figures
title: TEACHING, EDUCATION AND TECHNOLOGY
title: ENSINO, EDUCAÇÃO E TECNOLOGIA
titleType: AlternativeTitle
title: ENSEÑANZA, EDUCACIÓN Y TECNOLOGÍA
titleType: AlternativeTitle
Creators: name: Ferreira, Suiane Costa
name: Carvalho, Fernando Luís de Queiroz
Publisher: name: Cenas Educacionais
Year: 2023
Subjects: Teaching
Education
Technology
Enseñanza
Educación
Tecnología
Ensino
Educação
Tecnologia

description: Presentation of the Thematic Dossier TEACHING, EDUCATION AND TECHNOLOGY
description: Apresentação do Dossiê Temático ENSINO, EDUCAÇÃO E TECNOLOGIA
description: Presentación del Dossier Temático ENSEÑANZA, EDUCACIÓN Y TECNOLOGÍA
Cosmological Vlasov-Poisson Simulations of Structure Formation with Relic Neutrinos: Nonlinear Clustering and the Neutrino Mass
Creators: name: Yoshikawa, Kohji
name: Tanaka, Satoshi
name: Yoshida, Naoki
name: Saito, Shun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the results of cosmological simulations of large-scale structure formation with massive neutrinos. The phase-space distribution of the cosmic relic neutrinos is followed, for the first time, by directly integrating the six-dimensional Vlasov-Poisson equations. Our novel approach allows us to represent free streaming and clustering of neutrinos, and their gravitational interaction with cold dark matter accurately. We thus obtain solutions for the collisionless dynamics independent of conventional N-body methods. We perform a suite of hybrid N-body/Vlasov simulations with varying the neutrino mass, and systematically examine the dynamical effects of massive neutrinos on large-scale structure formation. Our simulations show characteristic large-scale clustering of the neutrinos and their coherent streaming motions relative to dark matter. The effective local neutrino "temperature" around massive galaxy clusters varies by several percent with respect to the cosmic mean; the neutrinos in clusters can be hotter or colder depending on the neutrino mass. We study a number of statistics of the large-scale structure and of dark matter halos in comparison with those obtained by N-body simulations and/or by perturbation theory. Our simulations mark an important milestone in numerical cosmology, and pave a new way to study cosmic structure formation with massive neutrinos.
description: 21 pages, accepted for publication in ApJ
A novel gene selection method for gene expression data for the task of cancer type classification
Creators: name: Simsek, Özlem
name: Arzucan Özgür
name: Gürgen, Fikret
Publisher: name: F1000 Research Limited
Year: 2019

description: Genomic data can be utilized for diagnosis of many diseases such as cancer. Cancer disease is caused by the mutations in DNA. These mutations may take action or be suppressed. The result of the active or suppressed state of mutations can be identified by gene expressions. In this study, we utilize and transfer the information of the effect of mutations in the development of cancer disease for a novel gene selection method for gene expression data. We tested the proposed method in order to diagnose and differentiate cancer types. Our experiment results show that the proposed gene selection method leads to similar or improved performance metrics compared to classical feature selection methods and curated gene sets.
The diquark and elastic pion-proton scattering at high energies
Creators: name: Bzdak, Adam
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Small momentum transfer elastic pion-proton cross-section at high energies is calculated assuming the proton is composed of two constituents, a quark and a diquark. We find that it is possible to fit very precisely the data when (i) the pion acts as a single entity (no constituent quark structure) and (ii) the diquark is rather large, comparable to the size of the proton.
description: 9 pages, 4 figures
Σημαντικές επιρροές στην ανάπτυξη της περιβαλλοντικής ευαισθητοποίησης
Creators: name: Palmer, J.
name: Suggate, J.
name: Τσαλίκη, Ε.
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: In this paper we present the results of research about the relative importance that various categories of important and formative influences have on the development of knowledge and concern for the environment of environmental educators. We briefly
well as a comparative analysis between the two countries.
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
PathRacer: racing profile HMM paths on assembly graph and more
Creators: name: Shlemov, Alexander
name: Korobeynikov, Anton
Publisher: name: F1000 Research Limited
Year: 2019

description: Recently large databases containing profile Hidden Markov Models (pHMMs) emerged. The typical application of such a database includes the alignment of contigs to pHMM hoping that the sequence of gene of interest is located within the single contig and the contig itself is correct. Such conditions are often violated: the genes of interest could be fragmented and frame shifts in contigs (common for long read assemblies) could corrupt gene prediction and amino-acid alignment

PathRacer is a tool for alignment of assembly graph against pHMM. It provides the set of k most probable paths traversed by a HMM through the whole assembly graph. It supports both nucleotide and amino-acid pHMMs performing nt-to-aa translation on-fly walking through frameshifts. In compare to its analogues (MegaGTA, Xander, and HMM-FRAME), PathRacer supports both local and global search and works significantly faster
A Measure of Space for Computing over the Reals
Creators: name: De Naurois, Paulin Jacobé
Publisher: name: arXiv
Year: 2006
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: We propose a new complexity measure of space for the BSS model of computation. We define LOGSPACE\_W and PSPACE\_W complexity classes over the reals. We prove that LOGSPACE\_W is included in NC^2\_R and in P\_W, i.e. is small enough for being relevant. We prove that the Real Circuit Decision Problem is P\_R-complete under LOGSPACE\_W reductions, i.e. that LOGSPACE\_W is large enough for containing natural algorithms. We also prove that PSPACE\_W is included in PAR\_R.
Transients generate memory and break hyperbolicity in stochastic enzymatic networks
Creators: name: Kumar, Ashutosh
name: Adhikari, R.
name: Dua, Arti
Publisher: name: arXiv
Year: 2020
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The hyperbolic dependence of catalytic rate on substrate concentration is a classical result in enzyme kinetics, quantified by the celebrated Michaelis-Menten equation. The ubiquity of this relation in diverse chemical and biological contexts has recently been rationalized by a graph-theoretic analysis of deterministic reaction networks. Experiments, however, have revealed that "molecular noise" - intrinsic stochasticity at the molecular scale - leads to significant deviations from classical results and to unexpected effects like "molecular memory", i.e., the breakdown of statistical independence between turnover events. Here we show, through a new method of analysis, that memory and non-hyperbolicity have a common source in an initial, and observably long, transient peculiar to stochastic reaction networks of multiple enzymes. Networks of single enzymes do not admit such transients. The transient yields, asymptotically, to a steady-state in which memory vanishes and hyperbolicity is recovered. We propose new statistical measures, defined in terms of turnover times, to distinguish between the transient and steady states and apply these to experimental data from a landmark experiment that first observed molecular memory in a single enzyme with multiple binding sites. Our study shows that catalysis at the molecular level with more than one enzyme always contains a non-classical regime and provides insight on how the classical limit is attained.
description: 17 pages, 8 figures
Heat kernels on metric graphs and a trace formula
Creators: name: Kostrykin, Vadim
name: Potthoff, Jurgen
name: Schrader, Robert
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34B45; 81U40; 47D06

description: We study heat semigroups generated by self-adjoint Laplace operators on metric graphs characterized by the property that the local scattering matrices associated with each vertex of the graph are independent from the spectral parameter. For such operators we prove a representation for the heat kernel as a sum over all walks with given initial and terminal edges. Using this representation a trace formula for heat semigroups is proven. Applications of the trace formula to inverse spectral and scattering problems are also discussed.
Found: The missing blue opacity in atmosphere models of cool hydrogen white dwarfs
Creators: name: Kowalski, P. M.
name: Saumon, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the importance of the far red wing of the Lyman $ α$ line of hydrogen in the atmospheres of cool white dwarfs of pure hydrogen composition. We find that this absorption process dominates all important sources of opacity in the blue part of the optical spectrum of these stars. Our successful fits to the spectra of cool DA/DC white dwarfs indicate that the far red wing of the $\rm Ly α$ line is the source of opacity that had been missing in the models. The observed sequence of cool white dwarfs in color-color diagrams is very well reproduced by our new pure hydrogen atmosphere models, suggesting that the atmospheric composition of the coolest DC white dwarfs must be revisited.
description: 11 pages, 4 figures, accepted for publication in The Astrophysical Journal Letters
Elliptic Biorthogonal Polynomials Connected with Hermite's Continued Fraction
Creators: name: Vinet, Luc
name: Zhedanov, Alexei
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study a family of the Laurent biorthogonal polynomials arising from the Hermite continued fraction for a ratio of two complete elliptic integrals. Recurrence coefficients, explicit expression and the weight function for these polynomials are obtained. We construct also a new explicit example of the Szegö polynomials orthogonal on the unit circle. Relations with associated Legendre polynomials are considered.
description: This is a contribution to the Vadim Kuznetsov Memorial Issue on Integrable Systems and Related Topics, published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Magnetic field vector retrieval with the Helioseismic and Magnetic Imager
Creators: name: Borrero, J. M.
name: Tomczyk, S.
name: Norton, A.
name: Darnell, T.
name: Schou, J.
name: Scherrer, P.
name: Bush, R.
name: Liu, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the accuracy to which we can retrieve the solar photospheric magnetic field vector using the Helioseismic and Magnetic Imager (HMI) that will fly onboard of the Solar Dynamics Observatory (SDO) by inverting simulated HMI profiles. The simulated profiles realistically take into account the effects of the photon noise, limited spectral resolution, instrumental polarization modulation, solar p modes and temporal averaging. The accuracy of the determination of the magnetic field vector is studied considering the different operational modes of the instrument.
description: 25 pages, 10 Figures, accepted for publication in Solar Physics
Résonance 2-surharmonique d'un contact unilatéral hertzien : approches théorique et expérimentale
Creators: name: Perret-Liaudet, Joël
name: Rigaud, Emmanuel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: For a preloaded impact oscillator under superharmonic excitation of order 2, the Hertzian non linearity constitutes the precursor of vibroimpacts established over a wide frequency range. The theoretical study is performed by using the shooting method with an arc length continuation. Experimental results obtained from a devoted test rig agree with theoretical ones. Particularly, the threeshold level of the excitation necessary to induce vibroimpacts is confirmed.
description: CD-Rom (6 pages)
Ποιες πεποιθήσεις επηρεάζουν την απόφαση των φοιτητών/ριών των Παιδαγωγικών Τμημάτων να παρακολουθήσουν μαθήματα πειραματικής διδασκαλίας των Φυσικών Επιστημών
Creators: name: Μπούτσικας, Νίκος
name: Τσελφές, Βασίλης
name: Κουμαράς, Παναγιώτης
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: In this paper, we attempt to deal with the problem relating to the negative intention of student teachers at the School of Education of the Aristotle University of Thessalonica to involve themselves in laboratory science courses during their undergraduate studies. Our approach focuses on the concept of attitude seen as a cognitive structure based on beliefs, which places it more in a constructivist context then in a behaviorist one. This is a Social Psychology’s approach, which started with the Fishbein and Ajzen's (1975) theory of "reasoned action", and concluded with the Ajzen's (1985) of "planed behavior". Our results indicate that primary student teachers intention to involve themselves in laboratory1 science courses is affected by their beliefs, which have to do with control factors within their training period as well as with social influences and beliefs, which formulate attitudes. The results discussed in the paper focus on the application of influences and beliefs.
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
ScCobB2-mediated Lysine Desuccinylation Regulates Protein Biosynthesis and Carbon Metabolism in Streptomyces coelicolor
Creators: name: Zhang, Hong
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310106
subject: Enzymes
classificationCode: 310109
subject: Proteomics and intermolecular interactions (excl. medical proteomics)
classificationCode: 310199
subject: Biochemistry and cell biology not elsewhere classified
classificationCode: 310505
subject: Gene expression (incl. microarray and other genome-wide approaches)
classificationCode: 310704
subject: Microbial genetics

description: As a recently discovered protein posttranslational modification in eukaryotes, lysine succinylation has attracted increasing interest due to its ability to regulate several critical cellular processes, including catabolism, β-oxidation, and ketogenesis. Nevertheless, understanding of the regulatory mechanisms is still at an early stage due to the lack of identified specific desuccinylases in microorganisms. Here, in the model soil bacterium Streptomyces coelicolor, we biochemically characterized a sirtuin-like protein ScCobB2 as a divergent desuccinylase. Based on it, we were able to identify a total of 673 unique succinylated sites, of which 470 sites in 317 proteins were quantified by comparing the ΔScCobB2 to the wild-type succinylome via LC-MS/MS analysis. Further analyses of the quantitative succinylome revealed that at least 114 proteins representing two major pathways, protein biosynthesis and carbon metabolism, are obviously hypersuccinylated in ΔScCobB2 cells. We experimentally examined the regulatory roles of ScCobB2 on 13 hypersuccinylated proteins, including glyceraldehyde-3-phosphate dehydrogenase, aconitate hydratase, and several ribosomal proteins, the results of which suggested a high confidence in our quantitative data. This work provided the first discovery of a specific desuccinylase in bacteria and demonstrated it has pivotal regulatory roles in multiple biological processes of S. coelicolor, laying the foundation for future research of succinylation regulation in other microorganisms.
Self-organized critical earthquake model with moving boundary
Creators: name: Manna, S. S.
name: Bhattacharya, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A globally driven self-organized critical model of earthquakes with conservative dynamics has been studied. An open but moving boundary condition has been used so that the origin (epicenter) of every avalanche (earthquake) is at the center of the boundary. As a result, all avalanches grow in equivalent conditions and the avalanche size distribution obeys finite size scaling excellent. Though the recurrence time distribution of the time series of avalanche sizes obeys well both the scaling forms recently observed in analysis of the real data of earthquakes, it is found that the scaling function decays only exponentially in contrast to a generalized gamma distribution observed in the real data analysis. The non-conservative version of the model shows periodicity even with open boundary.
description: 5 pages, 4 figures, accepted version in EPJB
An investigation of the Outlier Processing Method for single-trial-event-related potentials
Creators: name: Tajwar, Samina
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is an investigation of the Outlier Processing Method, which was developed to eliminate the dependence of conventional techniques on a priori information for the detection of event-related potentials (ERPs) from EEG signals. Instead of attempting to model the ERP, the OPM assumes the ERP to be an outlier signal which is imbedded in a background EEG signal. The background EEG is modelled as an auto-regressive signal and approximated using robust statistical parameter and signal estimation. The ERP estimate is obtained by subtracting the estimate of the background EEG signal from the observed EEG signal. The basis of the robust statistical parameter estimation used in OPM was the generalized maximum likelihood (GM) estimate. It required the generation of initial parameter estimates to start the process. MEM, a least squares estimator used in the original OPM, was found to be a more consistent estimator when compared to median regression estimation. Also, a method of automatically generating the tuning constants used by the influence functions in the GM estimate was proposed. , The robust signal estimation was a robust variation of a Kalman filter which required a cleaner function to minimize the effect of outliers such as ERPs. Of the three different cleaners that were evaluated, the fixed-lag cleaner had the best overall performance. A method of detecting the location of the outlier was developed and was found to be effective for signals with low SNRs and a large amount of spectral overlap between the outlier and the background EEG signal.
Robust Raw Waveform Speech Recognition Using Relevance Weighted Representations
Creators: name: Agrawal, Purvi
name: Ganapathy, Sriram
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Speech recognition in noisy and channel distorted scenarios is often challenging as the current acoustic modeling schemes are not adaptive to the changes in the signal distribution in the presence of noise. In this work, we develop a novel acoustic modeling framework for noise robust speech recognition based on relevance weighting mechanism. The relevance weighting is achieved using a sub-network approach that performs feature selection. A relevance sub-network is applied on the output of first layer of a convolutional network model operating on raw speech signals while a second relevance sub-network is applied on the second convolutional layer output. The relevance weights for the first layer correspond to an acoustic filterbank selection while the relevance weights in the second layer perform modulation filter selection. The model is trained for a speech recognition task on noisy and reverberant speech. The speech recognition experiments on multiple datasets (Aurora-4, CHiME-3, VOiCES) reveal that the incorporation of relevance weighting in the neural network architecture improves the speech recognition word error rates significantly (average relative improvements of 10% over the baseline systems)
description: arXiv admin note: text overlap with arXiv:2001.07067
Measuring and assessing economic uncertainty
Creators: name: Claveria, Oscar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This paper evaluates the dynamic response of economic activity to shocks in uncertainty as percieved by agents.The study focuses on the comparison between the perception of economic uncertainty by manufacturers and consumers.Since uncertainty is not directly observable, we approximate it using the geometric discrepancy indicator of Claveria et al.(2019).This approach allows us quantifying the proportion of disagreement in business and consumer expectations of eleven European countries and the Euro Area.First, we compute three independent indices of discrepancy corresponding to three dimensions of uncertainty (economic, inflation and employment) and we average them to obtain aggregate disagreement measures for businesses and for consumers.Next, we use a bivariate Bayesian vector autoregressive framework to estimate the impulse response functions to innovations in disagreement in every country.We find that the effect on economic activity of shocks to the perception of uncertainty differ markedly between manufacturers and consumers.On the one hand, shocks to consumer discrepancy tend to be of greater magnitude and duration than those to manufacturer discrepancy.On the other hand, innovations in disagreement between the two collectives have an opposite effect on economic activity:shocks to manufacturer discrepancy lead to a decrease in economic activity, as opposed to shocks to consumer discrepancy.This finding is of particular relevance to researchers when using cross-sectional dispersion of survey-based expectations, since the effect on economic growth of shocks to disagreement depend on the type of agent.
description: 22 pages, 6 figures
Quantum decoherence and neutrino data
Creators: name: Barenboim, G.
name: mavromatos, N. E.
name: Sarkar, S.
name: Waldron-Lauda, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we perform global fits of microscopic decoherence models of neutrinos to all available current data, including LSND and KamLAND spectral distortion results. In previous works on related issues the models used were supposed to explain LSND results by means of quantum gravity induced decoherence. However those models were purely phenomenological without any underlying microscopic basis. It is one of the main purposes of this article to use detailed microscopic decoherence models with complete positivity, to fit the data.The decoherence in these models has contributions not only from stochastic quantum gravity vacua operating as a medium, but also from conventional uncertainties in the energy of the (anti)neutrino beam. All these contributions lead to oscillation-length independent damping factors modulating the oscillatory terms from which one obtains an excellent fit to all available neutrino data, including LSND and Kamland spectral distortion.
description: 27 pages, 2 figures
Βιωματική επιμόρφωση των εκπαιδευτικών στην ψυχοπαιδαγωγική της επικοινωνίας
Creators: name: Μπακιρτζής, Κ.
Publisher: name: Παιδαγωγική Επιθεώρηση
Year: 1998

description: Cette recherche, avec des enseignants du primaire cl du secondaire de l Education nationale, vise a explorer les caractéristiques d une formation a la communication humaine a travers l'implication et 1' expérience vécue, et évaluer les acquis à court et a long ternie (un an après). Guidée par les principes d’action recherche, se base sur l'analyse de lestes écrits et évalués par les participants, et sur leurs réponses à un questionnaire. Les conclusions soulignent l'importance d'une formation à caractère holistique et intégrative des différents niveaux du fonctionnement psychique (cognitif. social, émotivo-affectif).
description: Παιδαγωγική Επιθεώρηση, Vol. 28 (1998)
Deep Learning-based Sentiment Classification: A Comparative Survey
Creators: name: Kayed, Mohamed
name: Díaz-Redondo, Rebeca P.
name: Mabrouk, Alhassan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Recently, Deep Learning (DL) approaches have been applied to solve the Sentiment Classification (SC) problem, which is a core task in reviews mining or Sentiment Analysis (SA). The performances of these approaches are affected by different factors. This paper addresses these factors and classifies them into three categories: data preparation based factors, feature representation based factors and the classification techniques based factors. The paper is a comprehensive literature-based survey that compares the performance of more than 100 DL-based SC approaches by using 21 public datasets of reviews given by customers within three specific application domains (products, movies and restaurants). These 21 datasets have different characteristics (balanced/imbalanced, size, etc.) to give a global vision for our study. The comparison explains how the proposed factors quantitatively affect the performance of the studied DL-based SC approaches.