cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fermi-liquid versus non-Fermi-liquid behavior in triple quantum dots
Creators: name: Zitko, Rok
name: Bonca, Janez
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the effect of electron hopping in triple quantum dots modelled by the three-impurity Anderson model. We determine the range of hopping parameters where the system exhibits the two-channel Kondo effect and has non-Fermi-liquid properties in a wide temperature interval. As this interval is entered from above, the conductance through the side dots increases to a half of the conductance quantum, while the conductance through the system remains small. At lower temperatures the conductance through the system increases to the unitary limit as the system crosses over to the Fermi-liquid ground state. Measuring the differential conductance in a three terminal configuration provides an experimental probe into the NFL behavior.
description: 4 pages, 5 figures
Dura Lex Sed Lex : le jeu de la loi et du hasard
Creators: name: Latour Marie
Publisher: name: Zenodo
Year: 2022
Subjects: gamification
serious game
ludification
jeu sérieux
Propriété intellectuelle
Droit d'auteur
Droit à l'image

description: Ce poster constitue une présentation des jeux de plateau et numérique "Dura Lex sed Lex" réalisés respectivement en 2020 et 2021 sur la base de crédits accordés par l'Appel à projet du GIS URFIST en 2019. Il sera présenté aux JABES 2022 et aux Journées Nationales du Formateur (JNF) organisées par l'ADBU en 2022.

La version imprimée du jeu de plateau est librement et gratuitement disponible sous licence Creative Commons BY NC SA à cette adresse : https://zenodo.org/record/4415610#.Ypi0tKjMKUk

L'adaptation numérique de ce jeu est librement et gratuitement disponible sous licence Creative Commons BY NC SA à cette adresse : https://zenodo.org/record/4637195#.Ypi1AqjMKUk

Contact : marie.latour@unc.nc
Η στρατηγική Mahalanoblis-Taguchi και η εφαρμογή της στη διάγνωση ατελειών λογισμικού:
Creators: name: Λιπαράς, Δημήτριος Σίμου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Πολυμεταβλητά συστήματα
Διάγνωση ατελειών
Απόσταση του Mahalanobis
Multivariate systems
Defect prediction
Mahalanobis distance

description: Η στρατηγική Mahalanobis – Taguchi είναι μία μέθοδος για την υποβοήθηση της λήψης αποφάσεων σε συστήματα πολλών διαστάσεων, με την κατασκευή μιας κατάλληλης κλίμακας μέτρησης και με τη χρήση απλών μεθόδων για τη βελτιστοποίηση του συστήματος. Οι αποφάσεις που λαμβάνονται με τη βοήθεια της κλίμακας μέτρησης επιτυγχάνουν χαμηλότερο κόστος διαγνώσεων και ελαχιστοποιούν τα περιστατικά λανθασμένων διαγνώσεων, όπως επίσης και το χρόνο που απαιτείται για τη διάγνωση. Η στρατηγική περιλαμβάνει: (α) κατασκευή μιας κλίμακας μέτρησης, βασισμένης στα χαρακτηριστικά εισόδου του συστήματος, προκειμένου να μετρηθεί ο βαθμός «ανωμαλίας» ή παρατυπίας διαφόρων καταστάσεων, (β) ποσοτικοποίηση της λειτουργικότητας του συστήματος με το κατάλληλο μέτρο, (γ) ελαχιστοποίηση του αριθμού των διαστάσεων (μεταβλητών) για μία πιο αποτελεσματική διάγνωση – λήψη απόφασης, (δ) πρόβλεψη της απόδοσης του συστήματος υπό διαφορετικές συνθήκες και (ε) αντιμετώπιση προβλημάτων που εμφανίζονται συχνά στα συστήματα πολλών διαστάσεων, όπως πολυσυγγραμμικότητα και χαμηλές συσχετίσεις. Στην εργασία αυτή, αφού πρώτα γίνεται μια συνοπτική περιγραφή της μεθόδου σε θεωρητικό επίπεδο, στη συνέχεια εφαρμόζεται σε συγκεκριμένη ερευνητική περιοχή που ασχολείται με την ποιότητα του λογισμικού ως προϊόν και η οποία προσπαθεί να αναπτύξει μεθόδους αποτελεσματικής διάγνωσης ατελειών (defect prediction) στο λογισμικό, μέσω μετρικών που έχουν σχέση με την πολυπλοκότητα και το μέγεθος του κώδικα. Η μεθοδολογία εφαρμόζεται σε ένα σύνολο δεδομένων με τμήματα πηγαίου κώδικα, κάποια από τα οποία περιέχουν ατέλειες (defects). Τα αποτελέσματα επικυρώνουν την ακρίβεια της μεθόδου στη διάγνωση της ύπαρξης ατελειών.
description: The Mahalanobis-Taguchi Strategy (MTS) combines mathematical and statistical concepts like Mahalanobis distance, Gram-Schmidt orthogonalization and experimental designs to the problem of diagnosis and decision making based on multivariate data. The primary purpose is to develop a scale to measure the degree of abnormality of cases, compared to “normal” or “healthy” cases. An optimal subset of variables for measuring abnormality is then selected and rules for future diagnosis are defined based on them and the measurement scale.This maps well to software defect prediction based on a multivariate set of software metrics and attributes. In this thesis, the MTS is described and applied to well-known datasets in order to evaluate the fault-proneness of software modules. The classification scheme resulting from the MTS measurement scale shows that MTS is a promising technique for software defect diagnosis.
Phase transition for level-set percolation of the membrane model in dimensions $d \geq 5$
Creators: name: Chiarini, Alberto
name: Nitzschner, Maximilian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60G15, 60K35, 60G60, 82B43

description: We consider level-set percolation for the Gaussian membrane model on $\mathbb{Z}^d$, with $d \geq 5$, and establish that as $h \in \mathbb{R}$ varies, a non-trivial percolation phase transition for the level-set above level $h$ occurs at some finite critical level $h_\ast$, which we show to be positive in high dimensions. Along $h_\ast$, two further natural critical levels $h_{\ast\ast}$ and $\overline{h}$ are introduced, and we establish that $-\infty <\overline{h} \leq h_\ast \leq h_{\ast\ast} < \infty$, in all dimensions. For $h > h_{\ast\ast}$, we find that the connectivity function of the level-set above $h$ admits stretched exponential decay, whereas for $h < \overline{h}$, chemical distances in the (unique) infinite cluster of the level-set are shown to be comparable to the Euclidean distance, by verifying conditions identified by Drewitz, Ráth and Sapozhnikov, see arXiv:1212.2885, for general correlated percolation models. As a pivotal tool to study its level-set, we prove novel decoupling inequalities for the membrane model.
description: 29 pages, 1 figure, to appear in Journal of Statistical Physics
Η Διεθνής Δημόσια Τάξη:
Creators: name: Αϊβατζίδου, Ελένη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Επιτακτικό (αναγκαστικό) Δίκαιο
Υποχρεώσεις προς το σύνολο της διεθνούς κοινότητας
Ιεραρχία κανόνων στο διεθνές δίκαιο
Jus Cogens
Obligations Erga Omnes
Hierarchy of norms in international law

description: Με τον όρο «διεθνής δημόσια τάξη» νοείται μία δέσμη θεμελιωδών και αυξημένης ισχύος κανόνων, ηθικών αρχών και υποχρεώσεων που απορρέουν από το διεθνές δίκαιο, έχουν τεθεί στην υπηρεσία της προστασίας συμφερόντων που ξεπερνώντας τα ατομικιστικά κίνητρα και μεμονωμένα συμφέροντα των κρατών αναφέρονται στη διεθνή κοινότητα ως σύνολο, εισάγουν μία μορφή ιεραρχίας των διεθνών κανόνων, και διέπουν τις σχέσεις μεταξύ των κρατών της διεθνούς κοινότητας στοχεύοντας στην επίτευξη της μεταξύ τους ομαλής συνύπαρξης, συνεργασίας και διάδρασης. Η διεθνής πρακτική, βιβλιογραφία και νομολογία αναφέρεται στον ως άνω όρο παραπέμποντας σε έννοιες όπως οι κανόνες με χαρακτήρα jus cogens, οι erga omnes υποχρεώσεις των κρατών της διεθνούς κοινότητας, το διεθνές ποινικό δίκαιο και ειδικότερα η στα πλαίσιά του άσκηση της Οικουμενικής Δικαιοδοσίας και στο μοναδικό, ίσως, διεθνές κείμενο με κάποια ψήγματα συνταγματισμού, το Χάρτη των Ηνωμένων Εθνών και πιο συγκεκριμένα στην υπεροχή του έναντι όλων των λοιπών συμβατικών υποχρεώσεων των μελών των Ηνωμένων Εθνών, όπως αυτή εξαγγέλλεται στο άρθρο 103 του Χάρτη. Αντικείμενο της παρούσης είναι μία σύντομη επισκόπηση της διεθνούς βιβλιογραφίας και νομολογίας με σκοπό την κατανόηση και τον καθορισμό του περιεχομένου των ως άνω εννοιών και μέσω αυτών της έννοιας της δημόσιας τάξης σε διεθνές επίπεδο.
description: The concept of “international public order” refers to a set of fundamental rules, moral values and obligations deriving from international law intended to serve interests of the international community as a whole, implying a short of hierarchy of international law norms and govern the international relations aiming in the peaceful coexistence, cooperation and transaction between the members of the international community. International practice, bibliography and jurisprudence when it comes to the term “international public order” refer to concepts like jus cogens, obligations erga omnes, international criminal law, the exercise of international jurisdiction and at last to the United Nations Charter as the latter being the only conventional text that could play the role of the international community’s Constitution when in its 103 article declares the Charter’s superior force against all the states obligations deriving from international treaties. The present work paper is attempting a review of the international bibliography and jurisprudence in order to specify the content of the above concepts and through them the concept of public order in international law itself.
Detecting episodes of star formation using Bayesian model selection
Creators: name: Lawler, Andrew J.
name: Acquaviva, Viviana
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Bayesian model comparison frameworks can be used when fitting models to data in order to infer the appropriate model complexity in a data-driven manner. We aim to use them to detect the correct number of major episodes of star formation from the analysis of the spectral energy distributions (SEDs) of galaxies, modeled after 3D-HST galaxies at z ~ 1. Starting from the published stellar population properties of these galaxies, we use kernel density estimates to build multivariate input parameter distributions to obtain realistic simulations. We create simulated sets of spectra of varying degrees of complexity (identified by the number of parameters), and derive SED fitting results and evidences for pairs of nested models, including the correct model as well as more simplistic ones, using the BAGPIPES codebase with nested sampling algorithm MultiNest. We then ask the question: is it true - as expected in Bayesian model comparison frameworks - that the correct model has larger evidence?} Our results indicate that the ratio of evidences (the Bayes factor) is able to identify the correct underlying model in the vast majority of cases. The quality of the results improves primarily as a function of the total S/N in the SED. We also compare the Bayes factors obtained using the evidence to those obtained via the Savage-Dickey Density Ratio (SDDR), an analytic approximation which can be calculated using samples from regular Markov Chain Monte Carlo methods. We show that the SDDR ratio can satisfactorily replace a full evidence calculation provided that the sampling density is sufficient.
description: 18 pages, 10 figures
On Quantization of Time-Dependent Systems with Constraints
Creators: name: Gadjiev, S. A.
name: Jafarov, R. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Dirac method of canonical quantization of theories with second class constraints has to be modified if the constraints depend on time explicitly. A solution of the problem was given by Gitman and Tyutin. In the present work we propose an independent way to derive the rules of quantization for these systems, starting from physical equivalent theory with trivial non-stationarity.
description: 4 pages
AREAS AND STAGES OF DEVELOPMENT OF A COMMUNICATION OPERATOR
Creators: name: Allayorov Kh.I. independent researcher of SamIES
Publisher: name: Zenodo
Year: 2024

description: In this article, the author comments on the current state of the service industry and the role and importance of communication services in it. In addition, the analysis of data on the service mechanisms of communication operators, the role of communication services in the world market is presented.

Key words: service, communication services, mobile communication, Internet services.
Optical ratchets with discrete cavity solitons
Creators: name: Gorbach, Andrey V.
name: Denisov, Sergey
name: Flach, Sergej
Publisher: name: arXiv
Year: 2006
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a setup to observe soliton ratchet effects using discrete cavity solitons in a one-dimensional array of coupled waveguide optical resonators. The net motion of solitons can be generated by an adiabatic shaking of the holding beam with zero average inclination angle. The resulting soliton velocity can be controlled by different parameters of the holding beam.
description: 3 pages, 4 figures, submitted to Optics Letters
Spontaneous Circulation in Ground-State Spinor Dipolar Bose-Einstein Condensates
Creators: name: Kawaguchi, Yuki
name: Saito, Hiroki
name: Ueda, Masahito
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on a study of the spin-1 ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interactions. By solving the non-local Gross-Pitaevskii equations for this system, we find three ground-state phases. Moreover, we show that a substantial orbital angular momentum accompanied by chiral symmetry breaking emerges spontaneously in a certain parameter regime. We predict that all these phases can be observed in the spin-1 $^{87}$Rb condensate by changing the number of atoms or the trap frequency.
description: final version
Pressure and context : the genesis and development of power-sharing policies with neighbourhoods in neighbourhood planning
Creators: name: Hollick-Kenyon, Susan
Publisher: name: University of British Columbia
Year: 2009

description: Despite interest in meaningful citizen participation and in cooperation with community organizations in planning, local governments generally work haltingly, sporadically, and often ineffectually with neighbourhoods and neighbourhood organizations. Little previous work has examined the factors which affect the adoption of power-sharing decision-making models or structures between neighbourhood or community organizations and local governments. A selected literature review suggests participation is important to functioning democratically in representative systems, and that power-sharing forms of citizen participation are most meaningful. It situates neighbourhoods and neighbourhood organizations as units capable of enhancing democratic functioning, i f properly resourced and supported. This thesis collected data from a review of documents and from fourteen interviews with key informants involved with the introduction of a power-sharing policy on neighbourhood planning in Seattle, Washington. The findings indicate that in Seattle's case, four factors combined to lead to the policy's adoption: (1) the presence of functional neighbourhood organizations, (2) a conducive local political context, (3) application of pressure, and (4) inclusion of elements in the policy addressing political needs and the quality planning imperatives of inclusiveness and balance. These findings suggest that cities benefit when community (of many kinds) is fostered, a conducive context is created, neighbourhood and community groups apply pressure effectively, and planning policy is devised which engenders both inclusiveness and realism. A discussion of the significance and six suggestions for further research close the thesis.
A Mathematica Interface for FormCalc-generated Code
Creators: name: Hahn, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: This note describes a Mathematica interface for Fortran code generated by FormCalc. The interfacing code is set up automatically so that only minuscule changes in the driver files are required. The interface makes a function to compute the cross-section or decay rate available in Mathematica. This function depends on the model parameters chosen for interfacing in the Fortran code.
description: 6 pages
A benchmark of state-of-the-art sound event detection systems evaluated on synthetic soundscapes
Creators: name: Ronchini, Francesca
name: Serizel, Romain
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper proposes a benchmark of submissions to Detection and Classification Acoustic Scene and Events 2021 Challenge (DCASE) Task 4 representing a sampling of the state-of-the-art in Sound Event Detection task. The submissions are evaluated according to the two polyphonic sound detection score scenarios proposed for the DCASE 2021 Challenge Task 4, which allow to make an analysis on whether submissions are designed to perform fine-grained temporal segmentation, coarse-grained temporal segmentation, or have been designed to be polyvalent on the scenarios proposed. We study the solutions proposed by participants to analyze their robustness to varying level target to non-target signal-to-noise ratio and to temporal localization of target sound events. A last experiment is proposed in order to study the impact of non-target events on systems outputs. Results show that systems adapted to provide coarse segmentation outputs are more robust to different target to non-target signal-to-noise ratio and, with the help of specific data augmentation methods, they are more robust to time localization of the original event. Results of the last experiment display that systems tend to spuriously predict short events when non-target events are present. This is particularly true for systems that are tailored to have a fine segmentation.
A Tale of Two Datasets: Representativeness and Generalisability of Inference for Samples of Networks
Creators: name: Krivitsky, Pavel N.
name: Coletti, Pietro
name: Hens, Niel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: The last two decades have seen considerable progress in foundational aspects of statistical network analysis, but the path from theory to application is not straightforward. Two large, heterogeneous samples of small networks of within-household contacts in Belgium were collected using two different but complementary sampling designs: one smaller but with all contacts in each household observed, the other larger and more representative but recording contacts of only one person per household. We wish to combine their strengths to learn the social forces that shape household contact formation and facilitate simulation for prediction of disease spread, while generalising to the population of households in the region.
 To accomplish this, we describe a flexible framework for specifying multi-network models in the exponential family class and identify the requirements for inference and prediction under this framework to be consistent, identifiable, and generalisable, even when data are incomplete; explore how these requirements may be violated in practice; and develop a suite of quantitative and graphical diagnostics for detecting violations and suggesting improvements to candidate models. We report on the effects of network size, geography, and household roles on household contact patterns (activity, heterogeneity in activity, and triadic closure).
description: 101 pages (3 front matter, 26 body, 72 appendix), 35 figures (4 body, 31 appendix), 66 tables (1 body, 61 appendix)
On the origin of the eccentricity dichotomy displayed by compact super-Earths: dynamical heating by cold giants
Creators: name: Poon, Sanson T. S.
name: Nelson, Richard P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Approximately half of the planets discovered by NASA's Kepler mission are in systems where just a single planet transits its host star, and the remaining planets are observed to be in multi-planet systems. Recent analyses have reported a dichotomy in the eccentricity distribution displayed by systems where a single planet transits compared with that displayed by the multi-planet systems. Using $N$-body simulations, we examine the hypothesis that this dichotomy has arisen because inner systems of super-Earths are frequently accompanied by outer systems of giant planets that can become dynamically unstable and perturb the inner systems. Our initial conditions are constructed using a subset of the known Kepler five-planet systems as templates for the inner systems, and systems of outer giant planets with masses between those of Neptune and Saturn that are centred on orbital radii $2 \le a_{\rm p} \le 10$ au. The parameters of the outer systems are chosen so that they are always below an assumed radial velocity detection threshold of 3 ms$^{-1}$. The results show an inverse relation between the mean eccentricities and the multiplicites of the systems. Performing synthetic transit observation of the final systems reveals dichotomies in both the eccentricity and multiplicity distributions that are close to being in agreement with the Kepler data. Hence, understanding the observed orbital and physical properties of the compact systems of super-Earths discovered by Kepler may require holistic modelling that couples the dynamics of both inner and outer systems of planets during and after the epoch of formation.
description: 19 pages, 24 figures, accepted to MNRAS
Catalogue of variable stars in open cluster fields
Creators: name: Paunzen, Ernst
Publisher: name: Zenodo
Year: 2024

description: Compared to field stars, parameters like age, distance, or metallicity can be determined more accurately for open clusters statistically through numerous cluster members. Since most kinds of variable stars are also present in open clusters, they offer the unique possibility to study all the various star groups and their dependency on age or environmental properties in much more detail. We have compiled a catalogue of known variable stars in open cluster regions and with up to two times the given cluster radius. This provides basic information about the distribution of variable stars in cluster fields for the complete sky. We took all variable and suspected variable stars into account from the complete collection, "The AAVSO Variable Star Index" (VSX). We did a crossmatch of these stars with the complete catalogue of galactic open clusters by Hunt & Reffert (2023). We primarily discuss the potential of small satellite missions in studying variables in open clusters.
Transfer-matrix renormalization group study of the spin ladders with cyclic four-spin interactions
Creators: name: Lu, H. T.
name: Sun, L. Q.
name: Qin, Shaojin
name: Wang, Y. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The temperature dependence of the specific heat and spin susceptibility of the spin ladders with cyclic four-spin interactions in the rung-singlet phase is explored by making use of the transfer-matrix renormalization group method. The values of spin gap are extracted from the specific heat and susceptibility, respectively. It is found that for different relative strength between interchain and intrachain interactions, the spin gap is approximately linear with the cyclic four-spin interaction in the region far away from the critical point. Furthermore, we show that the dispersion for the one-triplet magnon branch can be obtained by numerically fitting on the partition function.
description: 7 pages, 7 figures, 1 table
The Signal-to-Noise Ratio for Photon Counting After Photometric Corrections
Creators: name: Ludwick, Kevin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Photon counting is a mode of processing astronomical observations of low-signal targets that have been observed using an electron-multiplying charge-coupled device (EMCCD). In photon counting, the EMCCD amplifies the signal, and a thresholding technique effectively selects for the signal electrons while drastically reducing relative noise sources. Photometric corrections have been developed which result in the extraction of a more accurate estimate of the signal of electrons, and the Nancy Grace Roman Telescope will utilize a theoretical expression for the signal-to-noise ratio (SNR) given these corrections based on well-calibrated noise parameters to plan observations taken by its coronagraph instrument. I derive here analytic expressions for the SNR for the method of photon counting, before and after these photometric corrections have been applied.
description: updated to match journal version; 20 pages, 1 figure and 1 table
Assisted Shortest Path Planning for a Convoy through a Repairable Network
Creators: name: Bhadoriya, Abhay Singh
name: Montez, Christopher
name: Rathinam, Sivakumar
name: Darbha, Swaroop
name: Casbeer, David W.
name: Manyam, Satyanarayana G.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In this article, we consider a multi-agent path planning problem in a partially impeded environment. The impeded environment is represented by a graph with select road segments (edges) in disrepair impeding vehicular movement in the road network. A convoy wishes to travel from a starting location to a destination while minimizing some accumulated cost. The convoy may traverse an impeded edge for an additional cost (associated with repairing the edge) than if it were unimpeded. A second vehicle, referred to as a service vehicle, is simultaneously deployed with the convoy. The service vehicle assists the convoy by repairing an edge, reducing the cost for the convoy to traverse that edge. The convoy is permitted to wait at any vertex to allow the service vehicle to complete repairing an edge. The service vehicle is permitted to terminate its path at any vertex. The goal is then to find a pair of paths so the convoy reaches its destination while minimizing the total time (cost) the two vehicles are active, including any time the convoy waits. We refer to this problem as the Assisted Shortest Path Problem (ASPP). We present a generalized permanent labeling algorithm to find an optimal solution for the ASPP. We also introduce additional modifications to the labeling algorithm to significantly improve the computation time and refer to the modified labeling algorithm as $GPLA^*$. Computational results are presented to illustrate the effectiveness of $GPLA^*$ in solving the ASPP. We then give concluding remarks and briefly discuss potential variants of the ASPP for future work.
PSYCHOLOGICAL APPROACH TO PREPARING CHILDREN FOR SCHOOL
Creators: name: Baratova Shahzoda Gulistan pedagogical institute
Publisher: name: Zenodo
Year: 2024

description: Preparing children for school is a multifaceted process that involves not just academic readiness, but also psychological preparedness. A child's transition to school is a significant milestone that can impact their future learning experiences and attitudes towards education. Thus, ensuring they are psychologically ready is crucial for their overall well-being and success.

Key words: school, process, child, education, attention, environment, communication, work.
Diffractive and exclusive measurements at CDF
Creators: name: Gallinaro, Michele
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Experimental results from the CDF experiment at the Tevatron in $p\bar{p}$ collisions at $\sqrt{s}$=1.96 TeV are presented on the diffractive structure function at different values of the exchanged momentum transfer squared in the range $0
description: 6 pages, 9 figures Pub. Proc. of the ``XIV International Workshop on Deep Inelastic Scattering'' DIS2006), Tsukuba, Japan, 20-24 April, 2006
Supergravity can reconcile dark matter with lepton number violating neutrino masses
Creators: name: Mukhopadhyaya, Biswarup
name: SenGupta, Soumitra
name: Srikanth, Raghavendra
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Supersymmetry offers a cold dark matter candidate, provided that lepton number is {\em not violated by an odd number of units}. On the other hand, lepton number violation by even (two) units gives us an attractive mechanism of neutrino mass generation. Here we offer an explanation of this, in a supergravity framework underlying a supersymmetric scenario, the essential feature being particles carrying lepton numbers, which interact only gravitationally with all other known particles. It is shown that one can have the right amount of $ΔL = 2$ effect giving rise to neutrino masses, whereas the lifetime for $ΔL = 1$ decays of the lightest supersymmetric particle can be prolonged beyond the present age of the universe.
description: 8 pages, significant changes in the conceptual ideas and presentation of the paper, minor chages in the title and abstract, added few references. This is to appear in Physical Review D
Chain duality for categories over complexes
Creators: name: Davis, James F.
name: Rovi, Carmen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Topology (math.AT)
subject: Category Theory (math.CT)
subject: Geometric Topology (math.GT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 57M05

description: We show that the additive category of chain complexes parametrized by a finite simplicial complex $K$ forms a category with chain duality. This fact, never fully proven in the original reference, is fundamental for Ranicki's algebraic formulation of the surgery exact sequence of Sullivan and Wall, and his interpretation of the surgery obstruction map as the passage from local Poincaré duality to global Poincaré duality. Our paper also gives a new, conceptual, and geometric treatment of chain duality on $K$-based chain complexes.
description: 30 pages, 4 figures, final version
Digital Twin of Distribution Power Transformer for Real-Time Monitoring of Medium Voltage from Low Voltage Measurements
Creators: name: Moutis, Panayiotis
name: Alizadeh-Mousavi, Omid
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Real-time monitoring of distribution systems has be-come necessary, due to the deregulation of electricity markets and the wide deployment of distributed energy resources. To monitor voltage and current at sub-cycle detail, requires, typically, major investment undertaking and disruptions to the operation of the grid. In this work, measurements of the low voltage (LV) side of distribution transformers (T/F) are used to calculate in real time the waveforms of their medium voltage (MV) sides, based on a mathematical model of said T/F. This model is, essentially, the dig-ital twin of the MV side of the T/F. The method calculates T/F MV waveforms of voltage and current, and active and reactive power as accurately as an instrument T/F, captures all harmonics con-tent, is unaffected by asymmetrical loading and identifies most sys-tem faults on the MV side of the T/F. The digital twin method en-ables monitoring of distribution T/F that avoids MV instrumenta-tion, does not suffer in accuracy and may be readily deployable. Field data from an actual MV-LV T/F, agree with simulation re-sults showcasing the efficacy of the digital twin method.
Nouveaux jeux, nouveaux enjeux : tu relances ou tu te couches ?
Creators: name: Latour, Marie
Publisher: name: Zenodo
Year: 2021
Subjects: ludification
gamification
bibliothèque
library

description: Depuis 2015, le Service Commun de la Documentation s'engage dans un vaste programme de ludification de ses enseignements à destination de tous les niveaux. Retour sur une stratégie qui a conduit à l'élaboration de 9 jeux de plateau (dont 4 traduits en anglais), 1 bande-dessinée pédagogique, 1 jeu vidéo et 1 jeu numérique.

Contact : marie.latour@unc.nc
Nonlinear dynamics of the viscoelastic Kolmogorov flow
Creators: name: Bistagnino, A.
name: Boffetta, G.
name: Celani, A.
name: Mazzino, A.
name: Puliafito, A.
name: Vergassola, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The weakly nonlinear regime of a viscoelastic Navier--Stokes fluid is investigated. For the purely hydrodynamic case, it is known that large-scale perturbations tend to the minima of a Ginzburg-Landau free-energy functional with a double-well (fourth-order) potential. The dynamics of the relaxation process is ruled by a one-dimensional Cahn--Hilliard equation that dictates the hyperbolic tangent profiles of kink-antikink structures and their mutual interactions. For the viscoelastic case, we found that the dynamics still admits a formulation in terms of a Ginzburg--Landau free-energy functional. For sufficiently small elasticities, the phenomenology is very similar to the purely hydrodynamic case: the free-energy functional is still a fourth-order potential and slightly perturbed kink-antikink structures hold. For sufficiently large elasticities, a critical point sets in: the fourth-order term changes sign and the next-order nonlinearity must be taken into account. Despite the double-well structure of the potential, the one-dimensional nature of the problem makes the dynamics sensitive to the details of the potential. We analysed the interactions among these generalized kink-antikink structures, demonstrating their role in a new, elastic instability. Finally, consequences for the problem of polymer drag reduction are presented.
description: 26 pages, 17 figures, submitted to The Journal of Fluid Mechanics
3D-LaneNet+: Anchor Free Lane Detection using a Semi-Local Representation
Creators: name: Efrat, Netalee
name: Bluvstein, Max
name: Oron, Shaul
name: Levi, Dan
name: Garnett, Noa
name: Shlomo, Bat El
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: 3D-LaneNet+ is a camera-based DNN method for anchor free 3D lane detection which is able to detect 3d lanes of any arbitrary topology such as splits, merges, as well as short and perpendicular lanes. We follow recently proposed 3D-LaneNet, and extend it to enable the detection of these previously unsupported lane topologies. Our output representation is an anchor free, semi-local tile representation that breaks down lanes into simple lane segments whose parameters can be learnt. In addition we learn, per lane instance, feature embedding that reasons for the global connectivity of locally detected segments to form full 3d lanes. This combination allows 3D-LaneNet+ to avoid using lane anchors, non-maximum suppression, and lane model fitting as in the original 3D-LaneNet. We demonstrate the efficacy of 3D-LaneNet+ using both synthetic and real world data. Results show significant improvement relative to the original 3D-LaneNet that can be attributed to better generalization to complex lane topologies, curvatures and surface geometries.
description: arXiv admin note: substantial text overlap with arXiv:2003.05257
RR Lyrae stars in the southern globular cluster NGC 362
Creators: name: Szekely, P.
name: Kiss, L. L.
name: Jackson, R.
name: Derekas, A.
name: Csak, B.
name: Szatmary, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 362 is a bright southern globular cluster for which no extensive variability survey has ever been done. Time-series CCD photometric observations have been obtained. Light curves have been derived with both profile fitting photometry and image subtraction. We developed a simple method to convert flux phase curves to magnitudes, which allows the use of empirical light curve shape vs. physical parameters calibrations. Using the RR Lyrae metallicity and luminosity calibrations, we have determined the relative iron abundances and absolute magnitudes of the stars. The color-magnitude diagram has been fitted with Yale-Yonsei isochrones to determine reddening and distance independently. For five RR Lyrae stars we obtained radial velocity measurements from optical spectra. We found 45 RR Lyr stars, of which the majority are new discoveries. About half of the RR Lyraes exhibit light curve changes (Blazhko effect). The RR Lyrae-based metallicity of the cluster is [Fe/H]=-1.16 +/- 0.25, the mean absolute magnitude of the RR Lyrae stars is M_V=0.82 +/- 0.04 mag implying a distance of 7.9 +/- 0.6 kpc. The mean period of RRab stars is 0.585 +/- 0.081 days. These properties place NGC 362 among the Oosterhoff type I globular clusters. The isochrone fit implies a slightly larger distance of 9.2 +/- 0.5 kpc and an age of 11 +/- 1 Gyr. We also found 11 eclipsing binaries, 14 pulsating stars of other types, including classical Cepheids in the SMC and 15 variable stars with no firm classification.
description: 13 pages, 13 figures, accepted for publication in A&A
Αριθμητική και πειραματική μελέτη της απόκρισης ενός διβάθμιου ολισθαίνοντος συστήματος σε δυναμικές διεγέρσεις:
Creators: name: Κοΐδης, Γεώργιος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Δυναμική
Ολίσθηση
Dynamics
Sliding

description: Σε αυτήν την διπλωματική εργασία μελετούμε την απόκριση ενός διβάθμιου ολισθαίνοντος συστήματος, με τριβή τύπου Coulomb (με θεώρηση ξεχωριστών συντελεστών στατικής και δυναμικής τριβής), σε δυναμικές διεγέρσεις. Συγκεκριμένα, το σύστημα αποτελείται από ένα ολισθαίνων μπλόκ τοποθετημένο πάνω σε οριζόντια βάση και πάνω στο μπλόκ είναι πακτωμένος ένας μονοβάθμιος ταλαντωτής. Η βάση κινείται οριζόντια. Δημιουργήσαμε ένα πραγματικό τέτοιο μεταλλικό διβάθμιο σύστημα, στο εργαστήριο αντοχής των υλικών, και το τοποθετήσαμε πάνω στην σεισμική τράπεζα όπου το υποβάλαμε σε ημιτονοειδείς και σεισμικές διεγέρσεις. Από την σύγκριση της απόκρισης των δύο σωμάτων, όπως αυτή προκύπτει πειραματικά και αριθμητικά (από δικό μας πρόγραμμα προσομοίωσης) παρατηρούμε ότι υπάρχει πολύ καλή σύγκλιση.
description: In this study we investigate the response of a double degree of freedom sliding system, with Coulomb friction (supposing separate static and dynamic friction coefficients), to dynamic excitation.
description: Particularly, the system consists of a sliding block on a horizontal table. There is a SDOF fixed on the block. Table moves horizontally. We built a double degree of freedom sliding system, made of steel, in Materials Strength Laboratory. Then we placed that system on the seismic table where it was subjected to sinusoidal and seismic excitation. Comparing the experimental to the numerical (produced by a homemade simulation program) response of the two bodies, we observe that there is a very good convergence.
Soil organic components and aggregation as influenced by cover and ley crops
Creators: name: Liu, Aiguo
Publisher: name: University of British Columbia
Year: 2009

description: Structural degradation of silty clay loam soils in Delta, British Columbia, has resulted from intensive cultivation for vegetable crops. Field and laboratory incubation studies were conducted to determine the changes in soil total C, total N and total and labile polysaccharides produced by cover crops in relation to aggregate stability of these soils. Mean weight diameter (MWD) was used as a measure of soil aggregate stability. The field experiment included two cover crop sites, a pasture site and a Reclamation Site with severe structural degradation. The results on the cover crop site in 1992-1993 were not significantly different between bare soils and winter cover crop treatments because of problems of variability and high precipitation in April of 1993 when soils were sampled. In 1993-1994, cover crops which overwintered, annual ryegrass and fall rye, increased soil aggregate stability, and all of the cover crops significantly increased soil labile polysaccharides, but did not change total N during their growing period. Soil aggregate stability was significantly correlated with the content of labile polysaccharides and followed the order: annual ryegrass > fall rye > spring barley = bare soil. Long time pasture significantly increased the contents of total C, total and labile polysaccharides and total N , which effectively increased soil aggregate stability. At the Reclamation Site, grass (tall fescue) ley treatments significantly increased M W D values and total carbon and labile polysaccharide contents in comparison with a cash crop/clover combination. However, MWD and total and labile polysaccharide contents did not show the differences between the drained and undrained soil in the sampling in May of 1993, and the total carbon content in the undrained soil was higher than in the drained soil. In a laboratory experiment, chopped shoots and coarse roots of green cover crops, fall rye and annual ryegrass, and starch were added to a subsoil from the 1993-1994 cover crop site and incubated for 2, 4 and 8 weeks. The added cover crop and starch treatments increased soil total C and N and labile polysaccharides, which significantly increased soil MWD. The starch amendment was more effective in forming larger soil aggregates than the double-dose fall rye (the amount added into the soil was twice as much as the fall rye amendment) and fall rye amendments for 2 and 4 weeks incubations, but less effective than the double-dose fall rye and fall rye amendments for the 8 weeks incubation. A l l amendments increased the proportion of 2-6 mm aggregates relative to the control at all sampling dates except the fall rye amendment after 4-weeks incubation. M W D values correlated with soil total and labile polysaccharides, total C and total N in the incubation samples. Macroaggregates contained higher contents of total C, total polysaccharides and labile polysaccharides and total N than microaggregates.
Από τον Λοιμό στο Πλήθος του Αντρέα Φραγκιά. Προσέγγιση σε μια δυστοπική πραγματικότητα (Μια δυστοπική ανάγνωση).:
Creators: name: Γάκος, Σωτήρης Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2010
Subjects: Αντρέας Φραγκιάς
Δυστοπία
Πραγματικότητα
Andreas Fragias
Dystopia
Reality

description: Η συγκεκριμένη μεταπτυχιακή εργασία επιδιώκει να διερευνήσει τις σχέσεις πραγματικότητας και δυστοπίας, επισημαίνοντας τον ιδιαίτερο τρόπο με τον οποίο ο Αντρέας Φραγκιάς αξιοποιεί στοιχεία μιας δυστοπικής πραγματικότητας στην κατασκευή των αφηγηματικών κόσμων του στα δυο τελευταία μυθιστορήματά του. Ο τόπος, ο χρόνος και η γλώσσα είναι οι βασικοί άξονες στους οποίους βασίζεται η δυστοπική ανάγνωση του Λοιμού (1972)και του Πλήθους(1985 1, 1986 2). Μια τέτοιου είδους προσέγγιση αναμοχλεύει εποικοδομητικά τις υπάρχουσες αναφορές της κριτικής και διευρύνει τον ορίζοντα αναγνωστικών προτάσεων των συγκεκριμένων μυθιστορημάτων. Ο Αντρέας Φραγκιάς εστιάζει το φακό του σε μια πραγματικότητα η οποία μπορεί να προσλάβει έναν χαρακτήρα δυστοπικό. Ο Λοιμός φαίνεται να προετοιμάζει το αποφασιστικό βήμα που γίνεται αργότερα στο Πλήθος. Και τα δυο μυθιστορήματα παρουσιάζουν μεστά το αδιέξοδο μιας ρεαλιστικής γραφής, καθώς η σύγχρονη πραγματικότητα υπαγορεύει τον αποκλεισμό οποιασδήποτε πιστής αναπαράστασής της, αλλά συνάμα δεν απαγορεύει την κριτική ματιά απέναντί της αναζητώντας τους αρμούς σύνδεσης και συνέχειας. Ο Αντρέας Φραγκιάς φαίνεται να ψάχνει για το συνδετικό νήμα μέσα στην πραγματικότητα που ο ίδιος βίωσε αφήνοντας στο σύγχρονο αναγνώστη «μια υποψία ιστορίας και συνέχειας»
description: This paper aims at examining relations between literary terms : reality and dystopia showing the way that Andreas Fragias uses the elements of a dystopian reality in constructing narrative worlds at his last two novels Loimos (the Plague) 1972 and Plithos (the Crowd) 1985 - 86. The space (topos), the time and the language define the dystopian reading of these two novels. Such an approach discusses once again older critics and expands the interpretations of these particular novels. Andreas Fragias focuses on a reality with a potential dystopian character. Plithos (the Crowd) is a decisive step forward that Loimos (the Plague) seems to have prepared, both novels present the dead end of a realistic writing, while the modern reality can not be representable though allows a critic view that seeks for a connection and continuation. Andreas Fragias seems to be looking for the connection between the reality he experienced letting the modern reader with “a hint of history and continuation”.
Multiflypes of rectangular diagrams of links
Creators: name: Dynnikov, Ivan
name: Sokolova, Vera
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: We introduce a new very large family of transformations of rectangular diagrams of links that preserve the isotopy class of the link. We provide an example when two diagrams of the same complexity are related by such a transformation and are not obtained from one another by any sequence of `simpler' moves not increasing the complexity of the diagram along the way.
description: 10 pages, 7 figures
Bande-dessinée pédagogique sur la bibliométrie et l'évaluation de la recherche
Creators: name: Latour, Marie
name: Mahé, Annaïg
Publisher: name: Zenodo
Year: 2020
Subjects: Bande-dessinée
Bibliométrie
Evaluation de la recherche
Ludification
Comics
Bibliometry
Reseach Evaluation
Gamification

description: Depuis 2015, le Service commun de la Documentation (SCD) de l'Université de Guyane a entamé un travail de refonte de ses formations - notamment en Master et en Doctorat - dans le sens d'une ludification des contenus et d'une pratique générale de l'active learning. 

Lors de l'Open Access Week 2018, le SCD avait fait venir Mme Annaïg Mahé, enseignante-chercheuse en sciences de l'information et de la communication à l'URFIST de Paris / Ecole nationale des Chartes pour présenter aux doctorants et aux enseignants-chercheurs de l'Université un cours sur la bibliométrie et l'évaluation dans la recherche. De ce cours, Marie Latour, en collaboration avec Mme Mahé, a tiré une bande-dessinée pédagogique, qui a pu être réalisée grâce au soutien financier du GIS URFIST.

La création des dessins et du graphisme ont été élaborés sur la base d'un synopsis créé par le SCD par Jordy Le Bruchec et Bénédicte Sauvage. 

Cette bande dessinée est placée sous licence Creative Commons BY NC SA. Vous pouvez librement la réutiliser et la modifier sous réserve de citer l'Université de Guyane, de ne pas la commercialiser, et de déposer vos modifications éventuelles sous une licence libre. 

Pour toutes questions ou remarques, merci de vous adresser à Marie Latour à l'adresse suivante : marie.latour@unc.nc

EDIT : Le 06/07/2020 a été rajoutée nouvelle version de la bande-dessinée dans laquelle une coquille a été corrigée. Une version haute définition a également été ajoutée.