cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Social Studies, Science, and Civics: Teacher Education and Citizen Science in the 21st Century
Creators: name: Tippett, Christine
name: McLean, Lorna R.
name: Bergen, Jennifer
name: Baroud, Jamilee
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: Citizen science, research in which members of the public actively contribute scientific data, has recently evolved as a means to support scientific inquiry in the classroom, particularly in fields related to ecology and environmental science. Our research focuses on a collaborative project with teacher candidates, a science education professor, and a social studies education professor at a Canadian university. Teacher candidates were engaged in the classroom and beyond as they explored topics related to civics education and evidence-based decision making. Our findings demonstrate the potential effectiveness of a citizen science lens for science, social studies, and generalist teachers. Key Words: citizen science, citizenship/civics education, science education, social studies education, teacher education La science citoyenne, c'est-à-dire la recherche dans laquelle les membres du public contribuent activement aux données scientifiques, a récemment évolué comme un moyen de soutenir la recherche scientifique en classe, en particulier dans les domaines liés à l'écologie et aux sciences de l'environnement. Notre recherche porte sur un projet de collaboration avec de futurs enseignants, un professeur d'enseignement des sciences et un professeur d'enseignement des sciences sociales dans une université canadienne. Les candidats à l'enseignement se sont engagés dans la salle de classe et au-delà en explorant des sujets liés à l'éducation civique et à la prise de décision fondée sur des preuves. Nos résultats démontrent l'efficacité potentielle d'une optique de science citoyenne pour les professeurs de sciences, d'études sociales et les enseignants généralistes. Mots clés : science citoyenne; éducation à la citoyenneté/civique; enseignement des sciences; enseignement des études sociales; formation des enseignants
description: Alberta Journal of Educational Research, Vol. 67 No. 4 (2021): Winter
Symbolic sensors : one solution to the numerical-symbolic interface
Creators: name: Benoit, Eric
name: Foulloy, Laurent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This paper introduces the concept of symbolic sensor as an extension of the smart sensor one. Then, the links between the physical world and the symbolic one are introduced. The creation of symbols is proposed within the frame of the pretopology theory. In order to adapt the sensor to the measurement context, a learning process has been used to provide an adaptive interpretation of the measurement. Finally, an example is presented in the case of a temperature measurement.
Einsteinian gravity from a topological action
Creators: name: Mielke, Eckehard W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The curvature-squared model of gravity, in the affine form proposed by Weyl and Yang, is deduced from a topological action in 4D. More specifically, we start from the Pontrjagin (or Euler) invariant. Using the BRST antifield formalism with a double duality gauge fixing, we obtain a consistent quantization in spaces of double dual curvature as classical instanton type background. However, exact vacuum solutions with double duality properties exhibit a `vacuum degeneracy'. By modifying the duality via a scale breaking term, we demonstrate that only Einstein's equations with an induced cosmological constant emerge for the topology of the macroscopic background. This may have repercussions on the problem of `dark energy' as well as `dark matter' modeled by a torsion induced quintaxion.
description: 14 pages
Theory of weakly damped free-surface flows: a new formulation based on potential flow solutions
Creators: name: Dias, F.
name: Dyachenko, A. I.
name: Zakharov, V. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Several theories for weakly damped free-surface flows have been formulated. In this paper we use the linear approximation to the Navier-Stokes equations to derive a new set of equations for potential flow which include dissipation due to viscosity. A viscous correction is added not only to the irrotational pressure (Bernoulli's equation), but also to the kinematic boundary condition. The nonlinear Schrödinger (NLS) equation that one can derive from the new set of equations to describe the modulations of weakly nonlinear, weakly damped deep-water gravity waves turns out to be the classical damped version of the NLS equation that has been used by many authors without rigorous justification.
Generalized momenta of mass and their applications to the flow of compressible fluid
Creators: name: Rozanova, Olga
Publisher: name: arXiv
Year: 2007
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53Q; 53L65

description: We present a technique that allows to obtain certain results in the compressible fluid theory: in particular, it is a nonexistence result for the highly decreasing at infinity solutions to the Navier-Stokes equations, the construction of the solutions with uniform deformation and the study of behavior of the boundary of a material volume of liquid.
description: 10 pages, Proceedings of the International Conference on Hyperbolic Problems, Lyon, 2006, France. In press
Symbolic sensors
Creators: name: Benoit, Eric
name: Foulloy, Laurent
Publisher: name: arXiv
Year: 2007
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: This paper deals with sensors which compute and report linguistic assessments of their values.Such sensors, called symbolic sensors are a natural extension of smart ones when working with control systems which use artificial intelligence based technics. After having recalled the smart sensor concepts, this paper introduces the symbolic sensor ones. Links between the physical world and the symbolic one are described. It is then shown how Zadeh's approximate reasoning theory provides a smart way to implement symbolic sensors. Finally, since the symbolic sensor is a general component, a functional adaptation to the measurement context is proposed.
Learning to Measure: Adaptive Informationally Complete Generalized Measurements for Quantum Algorithms
Creators: name: García-Pérez, Guillermo
name: Rossi, Matteo A. C.
name: Sokolov, Boris
name: Tacchino, Francesco
name: Barkoutsos, Panagiotis Kl.
name: Mazzola, Guglielmo
name: Tavernelli, Ivano
name: Maniscalco, Sabrina
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many prominent quantum computing algorithms with applications in fields such as chemistry and materials science require a large number of measurements, which represents an important roadblock for future real-world use cases. We introduce a novel approach to tackle this problem through an adaptive measurement scheme. We present an algorithm that optimizes informationally complete positive operator-valued measurements (POVMs) on the fly in order to minimize the statistical fluctuations in the estimation of relevant cost functions. We show its advantage by improving the efficiency of the variational quantum eigensolver in calculating ground-state energies of molecular Hamiltonians with extensive numerical simulations. Our results indicate that the proposed method is competitive with state-of-the-art measurement-reduction approaches in terms of efficiency. In addition, the informational completeness of the approach offers a crucial advantage, as the measurement data can be reused to infer other quantities of interest. We demonstrate the feasibility of this prospect by reusing ground-state energy-estimation data to perform high-fidelity reduced state tomography.
description: Close to published version
The effect of negative feedback loops on the dynamics of Boolean networks
Creators: name: Sontag, Eduardo
name: Veliz-Cuba, Alan
name: Laubenbacher, Reinhard
name: Jarrah, Abdul Salam
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: Feedback loops in a dynamic network play an important role in determining the dynamics of that network. Through a computational study, in this paper we show that networks with fewer independent negative feedback loops tend to exhibit more regular behavior than those with more negative loops. To be precise, we study the relationship between the number of independent feedback loops and the number and length of the limit cycles in the phase space of dynamic Boolean networks. We show that, as the number of independent negative feedback loops increases, the number (length) of limit cycles tends to decrease (increase). These conclusions are consistent with the fact, for certain natural biological networks, that they on the one hand exhibit generally regular behavior and on the other hand show less negative feedback loops than randomized networks with the same numbers of nodes and connectivity.
Recensione Libro - Qiao Liang e Wang Xiangsui - Guerra senza limiti L'arte della guerra asimmetrica fra terrorismo e globalizzazione, a cura del Gen. Fabio Mini
Creators: name: Barbara, Caliandro
Publisher: name: Zenodo
Year: 2020

description: Recensione Libro - Qiao Liang e Wang Xiangsui - Guerra senza limiti L'arte della guerra asimmetrica fra terrorismo e globalizzazione, a cura del Gen. Fabio Mini
New formulations and branch-and-cut procedures for the longest induced path problem
Creators: name: Marzo, Ruslán G.
name: Melo, Rafael A.
name: Ribeiro, Celso C.
name: Santos, Marcio C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Given an undirected graph $G=(V,E)$, the longest induced path problem (LIPP) consists of obtaining a maximum cardinality subset $W\subseteq V$ such that $W$ induces a simple path in $G$. In this paper, we propose two new formulations with an exponential number of constraints for the problem, together with effective branch-and-cut procedures for its solution. While the first formulation (cec) is based on constraints that explicitly eliminate cycles, the second one (cut) ensures connectivity via cutset constraints. We compare, both theoretically and experimentally, the newly proposed approaches with a state-of-the-art formulation recently proposed in the literature. More specifically, we show that the polyhedra defined by formulation cut and that of the formulation available in the literature are the same. Besides, we show that these two formulations are stronger in theory than cec. We also propose a new branch-and-cut procedure using the new formulations. Computational experiments show that the newly proposed formulation cec, although less strong from a theoretical point of view, is the best performing approach as it can solve all but one of the 1065 benchmark instances used in the literature within the given time limit. In addition, our newly proposed approaches outperform the state-of-the-art formulation when it comes to the median times to solve the instances to optimality. Furthermore, we perform extended computational experiments considering more challenging and hard-to-solve larger instances and evaluate the impacts on the results when offering initial feasible solutions (warm starts) to the formulations.
Recensione Libro - Ó Tuathail Gearóid, Dalby Simon, Routledge Paul - The Geopolitics Reader
Creators: name: Barbara, Caliandro
Publisher: name: Zenodo
Year: 2020

description: Recensione Libro - Ó Tuathail Gearóid, Dalby Simon, Routledge Paul - The Geopolitics Reader
title: Αιολικά πάρκα, λήψη και επεξεργασία ανεμολογικών δεδομένων
title: Wind farms, wind data acquisition and processing
Creators: name: Σκορδαλος Νικολαος
Publisher: name: Technical University of Crete
Year: 2022

description: Η χρήση της αιολικής ενέργειας και η συμβολή αυτής στην παραγωγή οφέλιμης ενέργειας, συναντάται αρκετά χρόνια πίσω και δείχνει να εντείνεται όλο και περισσότερο με το πέρασμα του χρόνου και την ανάπτυξη της τεχνολογίας, σε παγκόσμιο επίπεδο. Στην παρούσα εργασία παρουσιάζεται αναλυτικά η έννοια του αιολικού δυναμικού και η διαθεσιμότητα σε αξιόλογα και αξιοποιήσιμα δεδομένα ανέμου από τον άνθρωπο. Περιγράφουμε ποιοί παράγοντες επηρεάζουν άμεσα το αιολικό δυναμικό και πόσο εύκολη είναι η λήψη και επεξεργασία ανεμολογικών δεδομένων, κατά τόπους. Παρατίθενται η φύση και τα είδη των ανεμογεννητριών που χρησιμοποιούνται, καθώς και ο ρόλος τους στην ανάπτυξη ενός αιολικού πάρκου, με σκοπό την ηλεκροπαραγωγή. Ακόμη, γίνεται αναφορά σε χαρακτηριστικά και προδιαγραφές, σε αρκετά εμπορικά μοντέλα ανεμογεννητριών της σύγχρονης αγοράς, δύο μεγάλων εταιριών παγκόσμιας φήμης, και στο πως μια κατάλληλη επιλογή για χρήση μπορεί να συμβάλει στην αύξηση της παραγωγικότητας. Προβλήματα που απασχολούν τους ερευνητές και τους μηχανικούς, όσον αφορά στην ταχύτητα ανέμου, είναι η ακρίβεια των μετρήσεων αλλά και η μακροχρόνια πρόβλεψη του αιολικού δυναμικού. Ο αριθμός και το ύψος των μετεωρολογικών ιστών, αλλά και οι προδιαγραφές του εξοπλισμού λήψης ανεμολογικών δεδομένων απαιτούν βέλτιστες πρακτικές για την ακριβή μέτρηση της ταχύτητας και άλλων παραμέτρων του ανέμου. Στην παρούσα εργασία αναλύονται αυτές οι πρακτικές, όπως και αναλυτικές μέθοδοι πρόβλεψης του μακροχρόνιου αιολικού δυναμικού μιας περιοχής. Παρουσιάζονται μεθοδολογίες (εκθετική, λογαριθμική, παραμέτρων) προσέγγισης ταχυτήτων ανέμου σε μεγαλύτερα ύψη, εκεί που λειτουργούν οι σύγχρονες μεγάλες ανεμογεννήτριες, όπου όμως δεν είναι πάντα εύκολη η πρόσβαση για μέτρηση, είτε είναι αρκετά κοστοβόρα. Η αξιοπιστία των μεθόδων αυτών δοκιμάζεται με πραγματικά δεδομένα ανέμου, που υπάρχουν διαθέσιμα για την Ιεράπετρα της Κρήτης. Επιπλέον, παρατίθεται πειραματική προσέγγιση της ταχύτητας ανέμου στα 100 m υψόμετρο της παραπάνω περιοχής, κάνοντας χρήση του εκθετικού και λογαριθμικού νόμου. Τέλος παρουσιάζονται σε πίνακες οι κατανομές ταχύτητας ανέμου για οκτώ περιοχές της Κρήτης που θεωρούνται από τις πιο ελκυστικές για επενδύσεις σε αιολοκά πάρκα. Οι πίνακες προκύπτουν από επεξεργασία ανεμολογικών δεδομένων που συλλέγουν μετεωρολογικοί σταθμοί, σε βάθος πενταετίας, και είναι προσβάσιμα στο κοινό.
Wreath products in modular group algebras of some finite 2-groups
Creators: name: Konovalov, Alexander
Publisher: name: arXiv
Year: 2007
Subjects: subject: Rings and Algebras (math.RA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 16S34; 20C05

description: Let $K$ be field of characteristic 2 and let $G$ be a finite non-abelian 2-group with the cyclic derived subgroup $G'$, and there exists a central element $z$ of order 2 in $Z(G) \backslash G'$. We prove that the unit group of the group algebra $KG$ possesses a section isomorphic to the wreath product of a group of order 2 with the derived subgroup of the group $G$, giving for such groups a positive answer to the question of A. Shalev.
description: 3 pages
It’s Not Just a Matter of Time: Exploring Resistance to Indigenous Education
Creators: name: Leddy, Shannon
name: O'Neill, Susan
Publisher: name: Alberta Journal of Educational Research
Year: 2021

description: This article explores resistance that occurred during the implementation of an Indigenous education curriculum within a teacher education program. The goal was to assist student teachers (STs) in developing a level of decolonial literacy that would help them unearth the colonial roots of their prior Indigenous education. Multiple data sources (STs written reflections, email communications, and researcher observations), were analyzed using narrative analysis to illuminate instances of resistance. Although the project showed great promise for transformative learning, the manifestation of resistance indicates the dire need for such work to continue. In our conclusion we offer some key considerations for teacher education regarding approaches to Indigenous education. Key Words: Indigenous Education, anti-racist education, resistance, teacher education, arts education Cet article explore la résistance qui était produit pendant l’implémentation d’un programme autochtone dans un programme de formations des enseignants. Le but de ce programme était d’encourager le développement d’alphabétisation décoloniale pour révéler les racines coloniales de leur éducation précédente. Plusieurs sources de données ont utilisé (des réflexions écrites, les communications courriel, et les observations des chercheurs) et ont analysé par méthode de l’analyse narrative pour illuminer des instances de résistance. Bien que le projet démontre beaucoup de potentiel, les manifestations de résistance indiquent le besoin vital pour ce travail a continué. En conclusion, nous offrons des considérations clé pour des programmes autochtones dans les programmes de formation d’enseignants. Mots clés: Éducation autochtone, éducation antiraciste, résistance, formation des enseignants, éducation artistique
description: Alberta Journal of Educational Research, Vol. 67 No. 4 (2021): Winter
Additional file 1 of MicroRNA-191 regulates oral squamous cell carcinoma cells growth by targeting PLCD1 via the Wnt/β-catenin signaling pathway
Creators: name: Wang, Zekun
name: Guan, Wenzhao
name: Ma, Yufeng
name: Zhou, Xuedong
name: Song, Guohua
name: Wei, Jianing
name: Wang, Chenyang
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 1.
Beyond Bourke Street: Melbourne Buskers in the Digital World
Creators: name: Bacchieri, Daniel
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 360306
subject: Musicology and ethnomusicology
classificationCode: 470105
subject: Journalism studies
classificationCode: 401301
subject: Cartography and digital mapping
classificationCode: 460506
subject: Graph, social and multimedia data

description: Street musicians are part of Melbourne's music ecosystem but are underrepresented in academic studies about the local cultural scene. This practice-based thesis documents and analyses street music in Melbourne, exploring the landscape of busking in both offline and online environments. The project used the theoretical and methodological framework described in cultural mapping, which is presented through a portfolio of multimedia journalism, including podcasting, videography, and music curation.
The traveling wave approach to asexual evolution: Muller's ratchet and speed of adaptation
Creators: name: Rouzine, Igor M.
name: Brunet, Eric
name: Wilke, Claus O.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We use traveling-wave theory to derive expressions for the rate of accumulation of deleterious mutations under Muller's ratchet and the speed of adaptation under positive selection in asexual populations. Traveling-wave theory is a semi-deterministic description of an evolving population, where the bulk of the population is modeled using deterministic equations, but the class of the highest-fitness genotypes, whose evolution over time determines loss or gain of fitness in the population, is given proper stochastic treatment. We derive improved methods to model the highest-fitness class (the stochastic edge) for both Muller's ratchet and adaptive evolution, and calculate analytic correction terms that compensate for inaccuracies which arise when treating discrete fitness classes as a continuum. We show that traveling wave theory makes excellent predictions for the rate of mutation accumulation in the case of Muller's ratchet, and makes good predictions for the speed of adaptation in a very broad parameter range. We predict the adaptation rate to grow logarithmically in the population size until the population size is extremely large.
description: 50 pages, 8 figures
Beyond Bourke Street: Melbourne Buskers in the Digital World
Creators: name: Duarte, Daniel Macedo Bacchieri
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 360306
subject: Musicology and ethnomusicology
classificationCode: 470105
subject: Journalism studies
classificationCode: 401301
subject: Cartography and digital mapping
classificationCode: 460506
subject: Graph, social and multimedia data

description: Street musicians are part of Melbourne's music ecosystem but are underrepresented in academic studies about the local cultural scene. This practice-based thesis documents and analyses street music in Melbourne, exploring the landscape of busking in both offline and online environments. The project used the theoretical and methodological framework described in cultural mapping, which is presented through a portfolio of multimedia journalism, including podcasting, videography, and music curation.
MOESM1 of A prospective study of maternal postnatal depressive symptoms with infant-feeding practices in a Chinese birth cohort
Creators: name: Sha, Tingting
name: Gao, Xiao
name: Chen, Cheng
name: Li, Ling
name: Cheng, Gang
name: Wu, Xialing
name: Tian, Qianling
name: Yang, Fan
name: He, Qiong
name: Yan, Yan
Publisher: name: figshare
Year: 2019
Subjects: Medicine
Cell Biology
Biotechnology
Biological Sciences not elsewhere classified
Mental Health

description: Additional file 1: Table S1. Results of the generalized estimating equations of screen-positive for major PND a (cutoff â Ľ13) with infant-feeding outcomes across time
A novel time-frequency Transformer based on self-attention mechanism and its application in fault diagnosis of rolling bearings
Creators: name: Ding, Yifei
name: Jia, Minping
name: Miao, Qiuhua
name: Cao, Yudong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The scope of data-driven fault diagnosis models is greatly extended through deep learning (DL). However, the classical convolution and recurrent structure have their defects in computational efficiency and feature representation, while the latest Transformer architecture based on attention mechanism has not yet been applied in this field. To solve these problems, we propose a novel time-frequency Transformer (TFT) model inspired by the massive success of vanilla Transformer in sequence processing. Specially, we design a fresh tokenizer and encoder module to extract effective abstractions from the time-frequency representation (TFR) of vibration signals. On this basis, a new end-to-end fault diagnosis framework based on time-frequency Transformer is presented in this paper. Through the case studies on bearing experimental datasets, we construct the optimal Transformer structure and verify its fault diagnosis performance. The superiority of the proposed method is demonstrated in comparison with the benchmark models and other state-of-the-art methods.
Strong Coupling Theory of Magic-Angle Graphene: A Pedagogical Introduction
Creators: name: Ledwith, Patrick J.
name: Khalaf, Eslam
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We give a self contained review of a recently developed strong coupling theory of magic-angle graphene. An advantage of this approach is that a single formulation can capture both the insulating and superconducting states, and with a few simplifying assumptions, can be treated analytically. We begin by reviewing the electronic structure of magic angle graphene's flat bands, in a limit that exposes their peculiar band topology and geometry. We highlight how similarities between the flat bands and the lowest Landau level give insight into the effect of interactions. For example, at certain fractional fillings, we note the promise for realizing fractional Chern states. At integer fillings, this approach points to flavor ordered insulators, which can be captured by a sigma-model in its ordered phase. Unexpectedly, topological textures of the sigma model carry electric charge which allows us to extend the same theory to describe the doped phases away from integer filling. We show how this approach can lead to superconductivity on disordering the sigma model, and estimate the T$_c$ for the superconductor. We highlight the important role played by an effective super-exchange coupling both in pairing and in setting the effective mass of Cooper pairs. Seeking to enhance this coupling helps predict new superconducting platforms, including the recently discovered alternating twist trilayer platform. We also contrast our proposal from strong coupling theories for other superconductors.
description: Comments: Contribution to the Philip W. Anderson Memorial Special Issue of Annals of Physics. 31 pages, 8 figures
Prévention des escarres chez les paraplégiques : une nouvelle approche par électrostimulation linguale
Creators: name: Moreau-Gaudry, Alexandre
name: Prince, Anne
name: Demongeot, Jacques
name: Payan, Yohan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Medical Physics (physics.med-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Pressure ulcers are recognized as a major health issue in individuals with spinal cord injuries and new approaches to prevent this pathology are necessary. An innovative health strategy is being developed through the use of computer and sensory substitution via the tongue in order to compensate for the sensory loss in the buttock area for individuals with paraplegia. This sensory compensation will enable individuals with spinal cord injuries to be aware of a localized excess of pressure at the skin/seat interface and, consequently, will enable them to prevent the formation of pressure ulcers by relieving the cutaneous area of suffering. This work reports an initial evaluation of this approach and the feasibility of creating an adapted behavior, with a change in pressure as a response to electro-stimulated information on the tongue. Obtained during a clinical study in 10 healthy seated subjects, the first results are encouraging, with 92% success in 100 performed tests. These results, which have to be completed and validated in the paraplegic population, may lead to a new approach to education in health to prevent the formation of pressure ulcers within this population. Keywords: Spinal Cord Injuries, Pressure Ulcer, Sensory Substitution, Health Education, Biomedical Informatics.
Statistical-mechanical description of quantum entanglement
Creators: name: Korbicz, J. K.
name: Hulpke, F.
name: Osterloh, A.
name: Lewenstein, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a description of finite dimensional quantum entanglement, based on a study of the space of all convex decompositions of a given density matrix. On this space we construct a system of real polynomial equations describing separable states. We further study this system using statistical mechanical methods. Finally, we apply our techniques to Werner states of two qubits and obtain a sufficient criterion for separability.
description: final version
The imaginary universe of Jacques Benoit
Creators: name: Sherman, Alan James
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is a study of three of the.literary works of Jacques Benoit: Jos Carbone, Les Princes and Gisèle et le serpent. It will be an attempt to combine different spatial elements of the texts, literal and symbolic, in order to define and explore the imaginary universe of our author. In our first text, Jos Carbone, we look to establish the role of the unconscious. The background predominance of night and dark elements, unseen invaders, habitations, in short, the forest in general appears as a metaphor for the unconscious mind of the hero Jos Carbone. In our analysis, we attempt to explore this imaginary universe with intent to establish the theme of the territorial quest as it might apply to the central couple Jos and Myrtie. In our analysis of Benoit's novel, Les Princes, we endeavour to explore the allegorical world with an emphasis on the nonverbal communication of both the topography and the inhabitants of la Ville. We observe the confrontation of men and dogs in an effort to examine the role of what is considered civil or animal, pet or prey. The impotency and frustration of Coquin society coupled with corrupt Grâligean authority evoke the ideas of Jean-Jacques Rousseau on social inequality. We shall, therefore, attempt to apply some of his beliefs to imaginary elements of the novel. Finally, we shall examine the unvoiced refutation of the Grâligean's verbal law and the possible future outcome of la Ville's violent upheaval. Gisèle et le serpent will be studied in terms of a creative quest to write on the part of the hero and narrator, Gregoire Rabouin. We will take into account the displacement, transformation and constant motion of the text as well as the combination of fantastic and conventional elements. The role of the protagonist Gisèle is to be examined in terms of her capacity as role model, motivation to write and magical force behind the liberation of the hero's creative drive. We shall show the conflict created by the doctor's frustration with his rational profession and examine the unblocking of his creativity as portrayed by his relinquishing of control. Furthermore, an analysis of the parodies of his occupation, the deformation of language and patients as well as the fairy-tale format of the novel will confirm his desire to renounce medicine in favour of literary creation. Finally, we see the completion of Rabouin's narrative voyage in the discovery of his ability to write. In conclusion we shall state general observations about the imaginary universe as it applies to the comparison of our three texts. Specifically, this will entail the unconscious world, the violent and disruptive element and Benoit's tendency to stray from the rules of standard literary genres.
Eternal Chaotic Inflation is Prohibited by Weak Gravity Conjecture
Creators: name: Huang, Qing-Guo
name: Li, Miao
name: Wang, Yi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate whether the eternal chaotic inflation can be achieved when the weak gravity conjecture is taken into account. We show that even the assisted chaotic inflation with potential $λϕ^4$ or $m^2ϕ^2$ can not be eternal. The effective field theory description for the inflaton field breaks down before inflation reaches the eternal regime. We also find that the total number of e-folds is still bounded by the inflationary entropy for the assisted inflation.
description: 10 pages
title: Application of a Novel Ventilation Simplification Algorithm
Creators: name: Strong, Caitlin
Publisher: name: University of Kentucky Libraries
Year: 2021
Subjects: subject: FOS: Environmental engineering
valueUri: http://www.oecd.org/science/inno/38235147.pdf

description: Ventilation network analysis is an integral part of maintaining a safe mine environment. Despite its important role, liberties are often taken with the representation of networks in ventilation network analysis software. In order to provide an alternative to heuristic methods used by ventilation engineers, a simplification algorithm has been developed. This algorithm is designed to work as a compliment to ventilation software. Comparisons of original ventilation networks and simplified networks show little to no change in fan operating point. The program utilizing this algorithm provides an alternative to reducing networks with a parallel factor. It can also be used in conjunction with parallel factor to achieve better results. The equivalent networks produced by the algorithm are also reversible. Demonstrations of this feature show its applicability in practical situations.
description: © 2021 Caitlin V. Strong
Thermodynamic structure of a generic null surface and the zeroth law in scalar-tensor theory
Creators: name: Dey, Sumit
name: Bhattacharya, Krishnakanta
name: Majhi, Bibhas Ranjan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the equation of motion of scalar-tensor theory acquires thermodynamic identity when projected on a generic null surface. The relevant projection is given by $E_{ab}l^ak^b$, where $E_{ab} =8πT_{ab}^{(m)}$ represents the equation motion for gravitational field in presence of external matter, $l^a$ is the generator of the null surface and $k^a$ is the corresponding auxiliary null vector. Our analysis is done completely in a covariant way. Therefore all the thermodynamic quantities are in covariant form and hence can be used for any specific form of metric adapted to a null surface. We show this both in Einstein and Jordan frames and find that these two frames provide equivalent thermodynamic quantities. This is consistent with the previous findings for a Killing horizon. Also, a concrete proof of the zeroth law in scalar-tensor theory is provided when the null surface is defined by a Killing vector.
description: Typos corrected, published in Phys. Rev. D
Phase transition of meshwork models for spherical membranes
Creators: name: Koibuchi, Hiroshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have studied two types of meshwork models by using the canonical Monte Carlo simulation technique. The first meshwork model has elastic junctions, which are composed of vertices, bonds, and triangles, while the second model has rigid junctions, which are hexagonal (or pentagonal) rigid plates. Two-dimensional elasticity is assumed only at the elastic junctions in the first model, and no two-dimensional bending elasticity is assumed in the second model. Both of the meshworks are of spherical topology. We find that both models undergo a first-order collapsing transition between the smooth spherical phase and the collapsed phase. The Hausdorff dimension of the smooth phase is H\simeq 2 in both models as expected. It is also found that H\simeq 2 in the collapsed phase of the second model, and that H is relatively larger than 2 in the collapsed phase of the first model, but it remains in the physical bound, i.e., H<3. Moreover, the first model undergoes a discontinuous surface fluctuation transition at the same transition point as that of the collapsing transition, while the second model undergoes a continuous transition of surface fluctuation. This indicates that the phase structure of the meshwork model is weakly dependent on the elasticity at the junctions.
description: 21 pages, 12 figures
A Class of pairwise-independent Joinings
Creators: name: Janvresse, Elise
name: De La Rue, Thierry
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 37A35, 37B10

description: We introduce a special class of pairwise-independent self-joinings for a stationary process: Those for which one coordinate is a continuous function of the two others. We investigate which properties on the process the existence of such a joining entails. In particular, we prove that if the process is aperiodic, then it has positive entropy. Our other results suggest that such pairwise independent, non-independent self-joinings exist only in very specific situations: Essentially when the process is a subshift of finite type topologically conjugate to a full-shift. This provides an argument in favor of the conjecture that 2-fold mixing implies 3-fold-mixing.
description: Dedicated to the memory of Professor Jos\'e de Sam Lazaro
A double main sequence turn-off in the rich star cluster NGC 1846 in the Large Magellanic Cloud
Creators: name: Mackey, A. D.
name: Nielsen, P. Broby
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on HST/ACS photometry of the rich intermediate-age star cluster NGC 1846 in the Large Magellanic Cloud, which clearly reveals the presence of a double main sequence turn-off in this object. Despite this, the main sequence, sub-giant branch, and red giant branch are all narrow and well-defined, and the red clump is compact. We examine the spatial distribution of turn-off stars and demonstrate that all belong to NGC 1846 rather than to any field star population. In addition, the spatial distributions of the two sets of turn-off stars may exhibit different central concentrations and some asymmetries. By fitting isochrones, we show that the properties of the colour-magnitude diagram can be explained if there are two stellar populations of equivalent metal abundance in NGC 1846, differing in age by approximately 300 Myr. The absolute ages of the two populations are ~1.9 and ~2.2 Gyr, although there may be a systematic error of up to +/-0.4 Gyr in these values. The metal abundance inferred from isochrone fitting is [M/H] ~ -0.40, consistent with spectroscopic measurements of [Fe/H]. We propose that the observed properties of NGC 1846 can be explained if this object originated via the tidal capture of two star clusters formed separately in a star cluster group in a single giant molecular cloud. This scenario accounts naturally for the age difference and uniform metallicity of the two member populations, as well as the differences in their spatial distributions.
description: 9 pages, 8 figures, accepted for publication in MNRAS. A version with full resolution figures may be obtained at http://www.roe.ac.uk/~dmy/papers/MN-07-0441-MJ_rv.ps.gz (postscript) or at http://www.roe.ac.uk/~dmy/papers/MN-07-0441-MJ_rv.pdf (PDF)
Groundstate with Zero Eigenvalue for Generalized Sombrero-shaped Potential in $N$-dimensional Space
Creators: name: Wei-Qin, Zhao
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Based on an iterative method for solving the goundstate of Schroedinger equation, it is found that a kind of generalized Sombrero-shaped potentials in N-dimensional space has groundstates with zero eigenvalue. The restrictions on the parameters in the potential are discussed.
description: 8 pages, 3 figures
Sterile neutrinos with non-standard interactions in $β$- and $0νββ$-decay experiments
Creators: name: Dekens, Wouter
name: de Vries, Jordy
name: Tong, Tom
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Charged currents are probed in low-energy precision $β$-decay experiments and at high-energy colliders, both of which aim to measure or constrain signals of beyond-the-Standard-Model physics. In light of future $β$-decay and LHC measurements that will further explore these non-standard interactions, we investigate what neutrinoless double-$β$ decay ($0νββ$) experiments can tell us if a nonzero signal were to be found. Using a recently developed effective-field-theory framework, we consider the effects that interactions with right-handed neutrinos have on $0νββ$ and discuss the range of neutrino masses that current and future $0νββ$ measurements can probe, assuming neutrinos are Majorana particles. For non-standard interactions at the level suggested by recently observed hints in $β$ decays, we show that next-generation $0νββ$ experiments can determine the Dirac or Majorana nature of neutrinos, for sterile neutrino masses larger than $\mathcal O(10)$ eV.
description: 27 pages, 5 figures
Optimization of Timepix3-based conventional Compton camera using electron track algorithm
Creators: name: Wen, Jiaxing
name: Zheng, Xutao
name: Gao, Huaizhong
name: Zeng, Ming
name: Zhang, Yuge
name: Yu, Minghai
name: Wu, Yuchi
name: Cang, Jirong
name: Ma, Ge
name: Zhao, Zongqing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The hybrid pixel detector Timepix3 allows the measurement of the time and energy deposition of an event simultaneously in each 55 $μ$m pixel, which makes Timepix3 a promising approach for a compact Compton camera. However, the angular resolution of Compton camera based on this kind of detector with high pixel density is usually degraded in imaging of MeV gamma-ray sources, because the diffusion of energetic Compton electron or photoelectron could trigger many pixels and lead to an inaccurate measurement of interaction position. In this study, an electron track algorithm is used to reconstruct the electron track and determine the interaction point. An demonstrative experiment was carried out, showing that the effect of this algorithm was significant. The angular resolution measures of a single layer Compton camera based on Timepix3 was enhanced to 12 degrees (FWHM) in imaging of a Co-60 gamma source.
description: final manuscript, 27 pages, 13 figures, published on NIM-A
Data-Driven 3D Reconstruction of Dressed Humans From Sparse Views
Creators: name: Zins, Pierre
name: Xu, Yuanlu
name: Boyer, Edmond
name: Wuhrer, Stefanie
name: Tung, Tony
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recently, data-driven single-view reconstruction methods have shown great progress in modeling 3D dressed humans. However, such methods suffer heavily from depth ambiguities and occlusions inherent to single view inputs. In this paper, we tackle this problem by considering a small set of input views and investigate the best strategy to suitably exploit information from these views. We propose a data-driven end-to-end approach that reconstructs an implicit 3D representation of dressed humans from sparse camera views. Specifically, we introduce three key components: first a spatially consistent reconstruction that allows for arbitrary placement of the person in the input views using a perspective camera model; second an attention-based fusion layer that learns to aggregate visual information from several viewpoints; and third a mechanism that encodes local 3D patterns under the multi-view context. In the experiments, we show the proposed approach outperforms the state of the art on standard data both quantitatively and qualitatively. To demonstrate the spatially consistent reconstruction, we apply our approach to dynamic scenes. Additionally, we apply our method on real data acquired with a multi-camera platform and demonstrate our approach can obtain results comparable to multi-view stereo with dramatically less views.
description: Presented at 3DV 2021. Code is released at https://gitlab.inria.fr/pzins/data-driven-3d-reconstruction-of-dressed-humans-from-sparse-views/
Supernova Fallback as Origin of Neutron Star Spins and Spin-kick Alignment
Creators: name: Janka, H. -Thomas
name: Wongwathanarat, Annop
name: Kramer, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Natal kicks and spins are characteristic properties of neutron stars (NSs) and black holes (BHs). Both offer valuable clues to dynamical processes during stellar core collapse and explosion. Moreover, they influence the evolution of stellar multiple systems and the gravitational-wave signals from their inspiral and merger. Observational evidence of possibly generic spin-kick alignment has been interpreted as indication that NS spins are either induced with the NS kicks or inherited from progenitor rotation, which thus might play a dynamically important role during stellar collapse. Current three-dimensional supernova simulations suggest that NS kicks are transferred in the first seconds of the explosion, mainly by anisotropic mass ejection and, on a secondary level, anisotropic neutrino emission. In contrast, the NS spins are only determined minutes to hours later by angular momentum associated with fallback of matter that does not become gravitationally unbound in the supernova. Here, we propose a novel scenario to explain spin-kick alignment as a consequence of tangential vortex flows in the fallback matter that is accreted mostly from the direction of the NS's motion. For this effect the initial NS kick is crucial, because it produces a growing offset of the NS away from the explosion center, thus promoting onesided accretion. In this new scenario conclusions based on traditional concepts are reversed. For example, pre-kick NS spins are not required, and rapid progenitor-core rotation can hamper spin-kick alignment. We also discuss implications for natal BH kicks and the possibility of tossing the BH's spin axis during its formation.
description: 38 pages, 9 figures, 1 table; includes new Sect.2 summarizing observations and new Fig. 8; considerably extended because of comments by referee and readers; accepted by ApJ
Kinematic segregation of nearby disk stars from the Hipparcos database
Creators: name: de Souza, R. E.
name: Teixeira, R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To better understand our Galaxy, we investigate the pertinency of describing the sys tem of nearby disk stars in terms of a two-components Schwarzschild velocity distributio n.Using the proper motion and parallax information of Hipparcos database, we determine t he parameters characterizing the local stellar velocity field of a sample of 22000 disk stars. The sample we use is essentially the same as the one described by the criteria ad opted to study the LSR and the stream motion of the nearby stellar population
description: 19 pages