cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Η ψηφιοποίηση στην πρωτοβάθμια εκπαίδευση
title: Digitilization in primary education
Creators: name: Νικολακακη Ευαγγελια
Publisher: name: Technical University of Crete
Year: 2021

description: Η ραγδαία εξέλιξη της τεχνολογίας τα τελευταία χρόνια και οι απαιτήσεις της ψηφιακής επανάστασης επέφεραν την ψηφιοποίηση σε όλους τους τομείς και ιδιαίτερα στον τομέα της Πρωτοβάθμιας Εκπαίδευσης, με την οποία ασχολείται η παρούσα εργασία. Η ψηφιοποίηση με τη στενή της έννοια σημαίνει τη μετατροπή του αναλογικού υλικού σε ψηφιακό, ενώ με την ευρεία της έννοια σημαίνει τη χρήση των νέων τεχνολογιών προκειμένου να επιτευχθούν αλλαγές και βελτιώσεις σε κάθε τομέα. Η θέση της Ελλάδας όσον αφορά την ψηφιακή της ωριμότητα βρίσκεται σε χαμηλά επίπεδα σε σχέση με άλλα κράτη. Ωστόσο, τα τελευταία χρόνια γίνονται συντονισμένες προσπάθειες από το Υπουργείο Ψηφιακής Διακυβέρνησης, ώστε να καλυφθούν τα κενά και παράλληλα να οδηγηθεί η χώρα μας σε καλύτερες θέσεις. Στο πλαίσιο αυτό, έχουν αναπτυχθεί πληροφοριακά συστήματα και άλλες ψηφιακές εφαρμογές για την καλύτερη διοίκηση της εκπαίδευσης και τη διάθεση του εκπαιδευτικού περιεχομένου στους ενδιαφερόμενους. Η πρόσφατη πανδημία του Κορωνοϊού και η ανάγκη εφαρμογής της εξ αποστάσεως εκπαίδευσης επιτάχυνε ακόμη περισσότερο αυτές τις διαδικασίες και έδωσε πολύτιμες εμπειρίες για τον ψηφιακό μετασχηματισμό της εκπαίδευσης.
description: The rapid development of technology in recent years and the demands of the digital revolution have led to digitization in all areas and especially in the field of Primary Education, with which the present work deals. Digitization in the narrow sense means the conversion of analog material to digital, while in its broadest sense it means the use of new technologies in order to achieve changes and improvements in every field. Greece's position in terms of digital maturity is at a low level compared to other countries. However, in recent years, coordinated efforts are being made by the Ministry of Digital Governance, in order to fill the gaps and at the same time lead our country to better positions. In this context, information systems and other digital applications have been developed to better administer education and make educational content available to stakeholders. The recent Coronavirus pandemic and the need to implement distance education have further accelerated these processes and provided valuable experiences for the digital transformation of education.
A Bit Stream Feature-Based Energy Estimator for HEVC Software Encoding
Creators: name: Ramasubbu, Geetha
name: Kaup, André
name: Herglotz, Christian
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The total energy consumption of today's video coding systems is globally significant and emphasizes the need for sustainable video coder applications. To develop such sustainable video coders, the knowledge of the energy consumption of state-of-the-art video coders is necessary. For that purpose, we need a dedicated setup that measures the energy of the encoding and decoding system. However, such measurements are costly and laborious. To this end, this paper presents an energy estimator that uses a subset of bit stream features to accurately estimate the energy consumption of the HEVC software encoding process. The proposed model reaches a mean estimation error of 4.88% when averaged over presets of the x265 encoder implementation. The results from this work help to identify properties of encoding energy-saving bit streams and, in turn, are useful for developing new energy-efficient video coding algorithms.
description: Proc. 2022 Picture Coding Symposium. arXiv admin note: substantial text overlap with arXiv:2207.02676
On the ergodic sum-rate performance of CDD in multi-user systems
Creators: name: Sezgin, Aydin
name: Charafeddine, Mohamad
name: Paulraj, Arogyaswami
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The main focus of space-time coding design and analysis for MIMO systems has been so far focused on single-user systems. For single-user systems, transmit diversity schemes suffer a loss in spectral efficiency if the receiver is equipped with more than one antenna, making them unsuitable for high rate transmission. One such transmit diversity scheme is the cyclic delay diversity code (CDD). The advantage of CDD over other diversity schemes such as orthogonal space-time block codes (OSTBC) is that a code rate of one and delay optimality are achieved independent of the number of transmit antennas. In this work we analyze the ergodic rate of a multi-user multiple access channel (MAC) with each user applying such a cyclic delay diversity (CDD) code. We derive closed form expressions for the ergodic sum-rate of multi-user CDD and compare it with the sum-capacity. We study the ergodic rate region and show that in contrast to what is conventionally known regarding the single-user case, transmit diversity schemes are viable candidates for high rate transmission in multi-user systems. Finally, our theoretical findings are illustrated by numerical simulation results.
description: to appear in Proceedings of 2007 IEEE Information Theory Workshop (ITW) in Lake Tahoe
Amarochara inquilina
Creators: name: Webster, Reginald
name: Klimaszewski, Jan
name: Pelletier, Georges
name: Savard, Karine
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Amarochara
Amarochara inquilina

description: Amarochara inquilina (Casey, 1906) Fig 9, Map 9 Additional Records. CANADA, New Brunswick, Sunbury Co., Portobello Creek NWA, 45.9031°N, 66.4268°W, 11.IX.2006 (1 ♀, RWC). York Co., Charters Settlement, 45.8395°N, 66.7391°W, 27.IV.2006, 19.V.2006 (3 ♀, RWC); Charters Settlement, 45.8286°N, 66.7395°W, 3.V.2006 (1 ♁, RWC). Bionomic Notes. Adults were collected from the nests of a black Formica species of mound building ant. Some adults were collected by sifting soil from the top layer of the nest, including those reported in Assing (2007). However, the most efficient method for collecting adults was to place small boards on the ant nests and examine the un- Map 9. Collection localities in New Brunswick, Canada of Amarochara inquilina. derside of the boards on subsequent days. Adults of this species or A. formicina would often be found resting on the underside of the boards. Interestingly, A. inquilina was rarely found in Formica nests together with A. formicina. Adults were collected during April, May and September. Th is species probably overwinters in the adult stage. Collection method: sifting top layer of a nest, examining underside of boards placed on a nest. Distribution in Canada and Alaska. NB (Assing 2007).
description: Published as part of Webster, Reginald, Klimaszewski, Jan, Pelletier, Georges & Savard, Karine, 2009, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada. I. Aleocharinae, pp. 171-248 in ZooKeys 22 (22) on pages 184-185, DOI: 10.3897/zookeys.22.152, http://zenodo.org/record/576537
description: {"references": ["Casey TL (1906) Observations of the staphylinid groups Aleocharinae and Xantholinini, chiefly of America. Transactions of the Academy of Sciences of St. Louis 16: 125 - 435.", "Assing V (2007) A revision of Amarochara of the Holarctic region. III. A new species, a new synonym, and additional records (Coleoptera, Staphylinidae: Aleocharinae). Zootaxa 1411: 25 - 32."]}
Competing superfluid and density-wave ground-states of fermionic mixtures with mass imbalance in optical lattices
Creators: name: Dao, Tung-Lam
name: Georges, Antoine
name: Capone, Massimo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the effect of mass imbalance on the phase diagram of a two-component fermionic mixture with attractive interactions in optical lattices. Using static and dynamical mean-field theories, we show that the pure superfluid phase is stable for all couplings when the mass imbalance is smaller than a limiting value. For larger imbalance, phase separation between a superfluid and a charge-density wave takes place when the coupling exceeds a critical strength. The harmonic trap induces a spatial segregation of the two phases, with a rapid variation of the density at the boundary.
description: e.g.:4 pages, 3 figures
Dynamics of self-gravitating systems in non-linearly magnetized chameleonic Brans-Dicke gravity
Creators: name: Yousaf, Z.
name: Bhatti, M. Z.
name: Rehman, S.
name: Bamba, Kazuharu
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the effects of magnetic fields of non-linear electrodynamics in chameleonic Brans-Dicke theory under the existence of anisotropic spherical fluid. In particular, we explore dissipative and non-dissipative self-gravitating systems in the quasi-homologous regime with the minimal complexity constraint. As a result, under the aforementioned circumstances, several analytic solutions are found. Furthermore, by analyzing the dynamics of a dissipative fluid, it is demonstrated that a void covering the center can satisfy the Darmois criteria. The temperature of the self gravitating systems is also investigated.
description: 26 pages, version accepted for publication in General Relativity and Gravitation
Towards Causal Analysis of Empirical Software Engineering Data: The Impact of Programming Languages on Coding Competitions
Creators: name: Furia, Carlo A.
name: Torkar, Richard
name: Feldt, Robert
Publisher: name: arXiv
Year: 2023
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: There is abundant observational data in the software engineering domain, whereas running large-scale controlled experiments is often practically impossible. Thus, most empirical studies can only report statistical correlations -- instead of potentially more insightful and robust causal relations. To support analyzing purely observational data for causal relations, and to assess any differences between purely predictive and causal models of the same data, this paper discusses some novel techniques based on structural causal models (such as directed acyclic graphs of causal Bayesian networks). Using these techniques, one can rigorously express, and partially validate, causal hypotheses; and then use the causal information to guide the construction of a statistical model that captures genuine causal relations -- such that correlation does imply causation. We apply these ideas to analyzing public data about programmer performance in Code Jam, a large world-wide coding contest organized by Google every year. Specifically, we look at the impact of different programming languages on a participant's performance in the contest. While the overall effect associated with programming languages is weak compared to other variables -- regardless of whether we consider correlational or causal links -- we found considerable differences between a purely associational and a causal analysis of the very same data. The takeaway message is that even an imperfect causal analysis of observational data can help answer the salient research questions more precisely and more robustly than with just purely predictive techniques -- where genuine causal effects may be confounded.
description: Improve the detail of a few references
Application of the equal dissipation rate principle to automatic generation of strut-and-tie models
Creators: name: Novak, Balthasar
name: Ananiev, Sergey
Publisher: name: arXiv
Year: 2007
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This work presents an extended formulation of maximal stiffness design, within the framework of the topology optimization. The mathematical formulation of the optimization problem is based on the postulated principle of equal dissipation rate during inelastic deformation. This principle leads to the enforcement of stress constraints in domains where inelastic deformation would occur. During the transition from the continuous structure to the truss-like one (strut-and-tie model) the dissipation rate is kept constant using the projected gradient method. The equal dissipation rate in the resulting truss and in the original continuous structure can be regarded as an equivalence statement and suggests an alternative understanding of physical motivation behind the strut-and-tie modeling. The performance of the proposed formulation is demonstrated with the help of two examples.
description: 9 pages
Mass-Selection and the Evolution of the Morphology-Density Relation from z=0.8 to z=0
Creators: name: Holden, B. P.
name: Illingworth, G. D.
name: Franx, M.
name: Blakeslee, J. P.
name: Postman, M.
name: Kelson, D. D.
name: van der Wel, A.
name: Demarco, R.
name: Magee, D. K.
name: Tran, K. -V.
name: Zirm, A.
name: Ford, H.
name: Rosati, P.
name: Homeier, N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We examined the morphology-density relations for galaxy samples selected by luminosity and by mass in each of five massive X-ray clusters from z=0.023 to 0.83 for 674 spectroscopically-confirmed members. Rest-frame optical colors and visual morphologies were obtained primarily from Hubble Space Telescope images. Morphology-density relations (MDR) are derived in each cluster from a complete, luminosity-selected sample of 452 galaxies with a magnitude limit M_V < M^{*}_{V} + 1. The change in the early-type fraction with redshift matches previous work for massive clusters of galaxies. We performed a similar analysis, deriving MDRs for complete, mass-selected samples of 441 galaxies with a mass-limit of 10^{10.6} M_{\sun}. Our mass limit includes faint objects, the equivalent of =~1 mag below L^{*} for the red cluster galaxies, and encompasses =~70% of the stellar mass in cluster galaxies. The MDRs in the mass-selected sample at densities of Sigma > 50 galaxies Mpc^{-2} are similar to those in the luminosity-selected sample but show larger early-type fractions. However, the trend with redshift in the fraction of elliptical and S0 galaxies with masses > 10^{10.6} M_{\sun} differs significantly between the mass- and luminosity-selected samples. The clear trend seen in the early-type fraction from z=0 to z=~ 0.8 is not found in mass-selected samples. The early-type galaxy fraction changes much less, and is consistent with being constant at 92% +/- 4% at Σ> 500 galaxies Mpc^{-2} and 83 +/- 3% at 50 < Σ< 500 galaxies Mpc^{-2}. This suggests that galaxies of mass lower than > 10^{10.6} M_{\sun} play a significant role in the evolution of the early-type fraction in luminosity-selected samples. (Abstract abridged)
description: 18 pages in emulate ApJ format, with 10 color figures, Accepted to ApJ. Version updated to reflect published version, includes new references and a correction to table 3
Advanced assessment of Beam Induced Background at a Muon Collider
Creators: name: Collamati, Francesco
name: Curatolo, Camilla
name: Lucchesi, Donatella
name: Mereghetti, Alessio
name: Mokhov, Nikolai
name: Palmer, Mark
name: Sala, Paola
Publisher: name: arXiv
Year: 2021
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Renewed international interest in muon colliders motivates the continued investigation of the impacts of beam-induced background on detector performance. This continues the effort initiated by the Muon Accelerator Program and carried out until 2017. The beam-induced background from muon decays directly impacts detector performance and must be mitigated by optimizing the overall machine design, with particular attention paid to the machine detector interface region. In order to produce beam-induced background events and to study their characteristics in coordination with the collider optimization, a flexible simulation approach is needed. To achieve this goal we have chosen to utilize the combination of LineBuilder and Monte Carlo FLUKA codes. We report the results of beam-induced background studies with these tools obtained for a 1.5 TeV center of mass energy collider configuration. Good agreement with previous simulations using the MARS15 code demonstrate that our choice of tools meet the accuracy and performance requirements to perform future optimization studies on muon collider designs.
description: Revised version 2
A developmental analysis of the reversal response in the nematode Caenorhabditis elegans
Creators: name: Chiba, Catherine Meye
Publisher: name: University of British Columbia
Year: 2010

description: The nematode Caenorhabditis eleqans exhibits a number of locomotory behaviours, among them a family of reversal responses which can occur either spontaneously, in the absence of obvious stimuli, or reflexively, in response to mechanical stimuli. These behaviours are thought to be mediated by a common neural circuit, the touch withdrawal circuit, whose genetics, neuranatomy, and development have been exceptionally well-characterized. Despite known changes in the functional neuroanatomy of this circuit over development, at least one behaviour mediated by this circuit, the touch withdrawal reflex, shows no apparent changes over development. This thesis examined the possibility that these changes may be reflected in two other reversal responses, spontaneous reversals and the tap reversal reflex. In the experiments reported here, both spontaneous reversals and the tap reversal reflex were examined over six developmental stages: four larval stages (L1, L2, L3, and L4), and two adult stages (young adult and 4 day olds). In all experiments, animals were observed individually under a light microscope and their behaviour videotaped for later analysis. Results indicated that both spontaneous reversals and the tap reversal reflex show developmental changes in C. elegans. Young adult animals showed an increase in the frequency of spontaneous reversals relative to the other developmental stages; this increase was neither a function of increased activity or change in sensory threshold. Larval animals of all stages also showed significantly different patterns of responding to taps relative to adult stages, with L2 animals showing the most pronounced differences. Although animals of all stages reversed in response to touch, taps elicited not only reversals, but a previously undescribed response, accelerations. While adults consistently showed reversals in response to single taps, larval animals showed accelerations on approximately half the responses. The tap reversal reflex was also found to be graded, showing a significant trend to increase in magnitude with increasing stimulus magnitude. Increasing stimulus magnitude also increased the probability of accelerations relative to single taps for all developmental stages, though larval animals still showed fewer reversals and more accelerations than adult animals. There appeared to be two phases in the development of the reflex: one, the transition from newly hatched L1 animal to subsequent larval stages; the other, the transition from larval stage L4 to young adult, when the pattern of responding to taps changes from the larval to the adult pattern. These periods correlated with periods of known neuronal change in the neural circuit. It was hypothesized that the transition from larval to adult patterns of responding might be the result of the addition of a specific sensory neuron, AVM, and its associated connections.
Devia prospera
Creators: name: Webster, Reginald
name: Klimaszewski, Jan
name: Pelletier, Georges
name: Savard, Karine
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Devia
Devia prospera

description: Devia prospera (Erichson, 1839) Fig 12, Map 12 New Records. CANADA, New Brunswick, Queens Co., West of Jemseg near “Trout Creek”, 45.8240°N, 66.1220°W, 26.IV.2004, 9.V.2004, 4.VI.2004 (4 ♁, 2 ♀, 6 sex undetermined, NBM, RWC). York Co., Charters Settlement, 45.8341°N, 66.7445°W, 22.IV.2005, 5.V.2008 (1 ♁, 2 sex undetermined, RWC); W of Canterbury near “ Browns Mt. Fen”, 45.9033°N, 67.6260°W, 2.V.2005, M.-A. Giguère and R.P. Webster (1 ♁, RWC); Upper Brockway, 45.5703°N, 67.0990°W, 23.IV.2006 (1 ♁, NBM). Bionomic Notes. Most adults of this species were found in leaf litter on the margins of vernal ponds in silver maple swamps, and mixed forests. In Labrador, this species was collected from willow humus and moss under willows (Salix species) (Gusarov 2003). Adults were collected in April, May, and June. Collection method: sifting. Map Į2. Collection localities in New Brunswick, Canada of Devia prospera. Distribution in Canada and Alaska. AK, YT, NT, BC, AB, MB, ON, NB, NF & LB (Gusarov 2003, Klimaszewski et al. 2006; Gouix and Klimaszewski 2007; Klimaszewski et al. 2008a)
description: Published as part of Webster, Reginald, Klimaszewski, Jan, Pelletier, Georges & Savard, Karine, 2009, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada. I. Aleocharinae, pp. 171-248 in ZooKeys 22 (22) on pages 187-188, DOI: 10.3897/zookeys.22.152, http://zenodo.org/record/576537
description: {"references": ["Erichson WF (1839) Erster Band. Genera et species Staphylinorum insectorum coleopterorum familiae. F. H. Morin, Berlin, 400 pp.", "Gusarov VI (2003) Revision of some types of North American aleocharines (Coleoptera: Staphylinidae: Aleocharinae), with synonymic notes. Zootaxa 353: 1 - 134.", "Gouix N, Klimaszewski J (2007) Catalogue of Aleocharine Rove Beetles of Canada and Alaska (Coleoptera, Staphylinidae, Aleocharinae). Pensoft Publishers, Sofia-Moscow, 165 pp.", "Klimaszewski J, Godin B, Pelletier G, Savard K (2008 a) Six new species and records of aleocharine beetles from the Yukon and Alaska (Coleoptera: Staphylinidae, Aleocharinae). The Canadian Entomologist 140: 265 - 291."]}
Resonance-like structure near the $ηd$ threshold in the $γ{d}${$\to$}$π^0η{d}$ reaction
Creators: name: Ishikawa, T.
name: Fujimura, H.
name: Fukasawa, H.
name: Hashimoto, R.
name: He, Q.
name: Honda, Y.
name: Iwata, T.
name: Kaida, S.
name: Kasagi, J.
name: Kawano, A.
name: Kuwasaki, S.
name: Maeda, K.
name: Masumoto, S.
name: Miyabe, M.
name: Miyahara, F.
name: Mochizuki, K.
name: Muramatsu, N.
name: Nakamura, A.
name: Nawa, K.
name: Obara, Y.
name: Ogushi, S.
name: Okada, Y.
name: Okamura, K.
name: Onodera, Y.
name: Ozawa, K.
name: Sakamoto, Y.
name: Sato, M.
name: Shimizu, H.
name: Sugai, H.
name: Suzuki, K.
name: Tajima, Y.
name: Takahashi, S.
name: Taniguchi, Y.
name: Tsuchikawa, Y.
name: Yamazaki, H.
name: Yamazaki, R.
name: Yoshida, H. Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: To investigate the interaction between the nucleon $N$ and nucleon resonance $N(1535)1/2^-$, the $ηd$ threshold structure connected to the isoscalar $S$-wave $N$-$N(1535)1/2^-$ system has been experimentally studied in the $γ{d}${$\to$}$π^0η{d}$ reaction at incident photon energies ranging from the reaction threshold to 1.15 GeV. A strong enhancement is observed near the $ηd$ threshold over the three-body phase-space contribution in the $ηd$ invariant-mass distribution. An analysis incorporating the known isovector resonance $\mathcal{D}_{12}$ with a spin-parity of $2^+$ in the $π^0d$ channel reveals the existence of a narrow isoscalar resonance-like structure with $1^-$ in the $ηd$ system. Using a Flatté parametrization, the mass is found to be $2.427_{-0.006}^{+0.013}$ GeV, close to the $ηd$ threshold, and the width is $\left(0.029_{-0.029}^{+0.006}{\rm\ GeV}\right)+\left(0.00_{-0.00}^{+0.41}\right) p_ηc$, where $p_η$ denotes the $η$ momentum in the rest frame of the $ηd$ system. The observed structure would be attributed to a predicted isoscalar $1^-$ $ηNN$ bound state from $ηNN$ and $πNN$ coupled-channel calculation, or an $ηd$ virtual state owing to strong $ηd$ attraction.
description: 6 pages, 3 figures
BioExcel Webinar #60: Social Media in Science Communication
Creators: name: Mendonca, Michelle
Publisher: name: Zenodo
Year: 2022
Subjects: webinar

description: In this session, you will hear from Michelle on the increasing demand for researchers to build a digital presence and the role of social media in science communication. She will cover examples of scientific organisations and researchers using innovative approaches to promote their research on social media, with insights on how BioExcel Centre of Excellence used Twitter to build a successful computational biomolecular research community. She will also provide tips on how to optimise your use of social media platforms along with the “dos and don’ts” of building a digital presence.
Plastic-damage model for concrete in principal directions
Creators: name: Ananiev, Sergey
name: Ozbolt, Josko
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present paper a plastic-damage model for concrete is discussed. Based on the fact that for isotropic materials the elastic trial stress and the projected plastic stress states have the same eigenvec-tors, the loading surface is formulated in the principal stress space rather than using the invariants of stress tensor. The model assumes that the directions of orthotropic damage coincide with principal directions of elastic predictor stress state (motivated by coaxial rotated crack model). Due to this assumption, the load-ing surface and the closest point projection algorithm can still be formulated in the principal directions. The evolution of the inelastic strain is determined using minimization principle. Damage and plastic parts of the inelastic strain are separated using a scalar parameter, which is assumed to be stress dependent. The paper also discusses an effective numerical implementation. The performance of the model is demonstrated on one illustrative example.
description: 8 pages
On the Origin of Cosmic Magnetic Fields
Creators: name: Kulsrud, Russell M.
name: Zweibel, Ellen G.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We review the literature concerning how the cosmic magnetic fields pervading nearly all galaxies actually got started. some observational evidence involves the chemical abundance of the light elements Be and B, while another one is based on strong magnetic fields seen in high red shift galaxies. Seed fields, whose strength is of order 10^{-20} gauss, easily sprung up in the era preceding galaxy formation. Several mechanisms are proposed to amplify these seed fields to microgauss strengths. The standard mechanism is the Alpha-Omega dynamo theory. It has a major difficulty that makes unlikely to provide the sole origin. The difficulty is rooted in the fact that the total flux is constant. This implies that flux must be removed from the galactic discs. This requires that the field and flux be separated, for otherwise interstellar mass must be removed from the deep galactic gravitational and then their strength increased by the alpha omega theory.
description: 90 pages and 6 figures; accepted for publication in Reports of Progress in Physics as an invited review
Large Language Models as Zero-Shot Human Models for Human-Robot Interaction
Creators: name: Zhang, Bowen
name: Soh, Harold
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Human models play a crucial role in human-robot interaction (HRI), enabling robots to consider the impact of their actions on people and plan their behavior accordingly. However, crafting good human models is challenging; capturing context-dependent human behavior requires significant prior knowledge and/or large amounts of interaction data, both of which are difficult to obtain. In this work, we explore the potential of large-language models (LLMs) -- which have consumed vast amounts of human-generated text data -- to act as zero-shot human models for HRI. Our experiments on three social datasets yield promising results; the LLMs are able to achieve performance comparable to purpose-built models. That said, we also discuss current limitations, such as sensitivity to prompts and spatial/numerical reasoning mishaps. Based on our findings, we demonstrate how LLM-based human models can be integrated into a social robot's planning process and applied in HRI scenarios. Specifically, we present one case study on a simulated trust-based table-clearing task and replicate past results that relied on custom models. Next, we conduct a new robot utensil-passing experiment (n = 65) where preliminary results show that planning with a LLM-based human model can achieve gains over a basic myopic plan. In summary, our results show that LLMs offer a promising (but incomplete) approach to human modeling for HRI.
description: 8 pages
Scalar damage model for concrete without explicit evolution law
Creators: name: Ozbolt, Josko
name: Ananiev, Sergey
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Based on the fact that for an isotropic material model the elastic predictor and the projected stress tensors have the same eigenvectors, it is shown that the scalar damage can be obtained directly from the projection algorithm. This eliminates the difficulty of a proper definition of equivalent strain which serves as a driving force for evolution of damage in concrete. Moreover, if eigenvectors are known it is not more nec-essary to use invariants of the stress tensor for the formulation of loading surface. In the present model the loading surface is represented in the polynomial form. This has two advantages: (i) it automatically fulfils C1 continuity and (ii) plane stress formulation is achieved by simply setting the third stress to zero. The perform-ance of the model is illustrated on example of a mixed-mode fracture of concrete. It is shown that for the pre-sent example the model prediction strongly depends on the choice of the stress degradation law.
description: 8 pages
title: Auswertung und Neuerhebung anthropometrischer Daten ehrenamtlicher Kräfte des Deutschen Roten Kreuzes als Grundlage einer evidenzbasierten Gesundheitsförderung und Ernährungsberatung
title: Anthropometry in volunteers of German Red Cross
Creators: name: Buck, Judith
Publisher: name: FH Münster
Year: 2012
Subjects: subject: 610 Medizin und Gesundheit

description: Gegenstand der vorliegenden Arbeit ist es, die Ernährungssituation der männlichen ehrenamtlichen Mitglieder beim DRK des Landesverband Westfalen-Lippe e.V anhand von ausgewerteten und neuerhobenen anthropometrischen Daten, insbesondere der Konfektionsgröße der Einsatzkleidung, zu bestimmen. Auf der Grundlage der ermittelten Ergebnisse sollen dann evidenzbasierte Maßnahmen zur Gesundheitsförderung und Ernährungsberatung entwickelt werden.
description: Anthropometrical data suggest a higher prevalence of adipositas in the group of volunteers of German Red Cross and indicate importance of health promotion activities.
Engineered novel multifunctional hybrid nanofiber reinforcement for
      improving the flexural strength and fracture of cementitious composites
      for sustainable concrete
Creators: name: Hasan, Hasan
Publisher: name: Lancaster University
Year: 2019

description: The carbonaceous nanomaterials (Multi wall carbon nanotubes (MWCNT),
      functionalised MWCNT and Carbon nanofibers (CNFs)) have outstanding
      properties (mechanical, electrical, etc., which can make them effectual
      nonoreinforcements for enhancing the properties of cementitious
      composites. unfortunately, these nanomaterials have a high tendency to
      agglomerate due to their strong Van der Waals self-attraction and
      hydrophobic surfaces. To date, ensuring a uniform dispersion in water and
      in the cementitious composite is the main challenge that hinders their
      effective use as a nano reinforcing agent.

      To address the issue of agglomeration of carbonaceous nanomaterials in
      cementitious composites, for the first time, a green process was developed
      to synthesise highly dispersible multifunctional hybrid nanoparticles
      using bio-derived nanoplatelets (BNPs) and MWCNT. Multifunctional hybrid
      nanoparticles BNP/MWCNT suspensions were analysed using Optical
      microscopy, Ultraviolet–visible spectroscopy (Uv-vis), Scanning Election
      microscopy (SEM), elemental analysis (energy dispersive X-ray diffraction
      (EDX) and thermal characterization (TG-DTG).

      In this work, extensive experimental studies have been conducted to
      investigate the hydration mechanism and microstructure characteristics of
      cementitious composites with BNP. The SEM, EDX, TG-DTG, Transmission
      Electron Microscopy (TEM), and X-ray diffraction (XRD) were used in this
      investigation. The mechanical properties of the resulting composites were
      characterised through compressive, flexural strength. More specially, the
      effect of BNP on fracture properties of cementitious composites has been
      investigated. The work has also focused on evaluating the effect of
      BNP/MWCNT on the hydration mechanism, microstructure characteristics and
      mechanical properties (compressive, flexural strength). As well as, the
      experiments were performed to examine the effects of BNP/MWNCT on fracture
      properties of cementitious composites. The obtained results on dispersion
      showed that, BNP, can be used to disperse MWCNT in aqueous solution and
      well dispersed MWCNT in aqueous solution were achieved.

      Addition of BNP resulted in cementitious composites to improve flexural
      strength, fracture properties and the microstructure of cementitious
      composites. The addition of multifunctional hybrid BNP/MWCNT to
      cementitious composites resulted in a significant improvement in the
      performance of cementitious composites and this gain could be attributed
      to uniform distribution of MWCNT, effective reinforcement effects, crack
      bridging and chemical bonding between BNP/MWCNT and cement hydrated
      products.
Inverting log blow-ups in log geometry
Creators: name: Park, Doosung
Publisher: name: arXiv
Year: 2023
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14A21

description: In the category of log schemes, it is unclear how to define the blow-ups for non-strict closed immersions. In this article, we introduce the notion of divided log spaces. We obtain the category of divided log spaces by locally inverting log blow-ups in the category of log schemes. We show that blow-ups exist for closed immersions of log smooth divided log spaces. This is an ingredient of the motivic six-functor formalism for log schemes.
description: 40 pages. Final version, to appear in Tunisian Journal of Mathematics
Uniqueness criteria for the Vlasov--Poisson system and applications to semiclassical analysis
Creators: name: Lafleche, Laurent
name: Saffirio, Chiara
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q83, 81Q20, 35Q55 (Primary) 82C10, 82C05 (Secondary)

description: We review some uniqueness criteria for the Vlasov--Poisson system, emerging as corollaries of stability estimates in strong or weak topologies, and show how they serve as a guideline to solve problems arising in semiclassical analysis. Different topologies allow to treat different classes of quantum states.
description: 14 pages
A Note on the Pfaffian Integration Theorem
Creators: name: Borodin, Alexei
name: Kanzieper, Eugene
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: High Energy Physics - Theory (hep-th)
subject: Probability (math.PR)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Two alternative, fairly compact proofs are presented of the Pfaffian integration theorem that is surfaced in the recent studies of spectral properties of Ginibre's Orthogonal Ensemble. The first proof is based on a concept of the Fredholm Pfaffian; the second proof is purely linear-algebraic.
description: 8 pages; published version
Multifloquet to single electronic channel transition in the transport properties of a resistive 1D driven disordered ring
Creators: name: Foieri, F.
name: Arrachea, L.
name: Sanchez, M. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the dc response of a 1D disordered ring coupled to a reservoir and driven by a magnetic flux with a linear dependence on time. We identify two regimes: (i) A localized or large length L regime, characterized by a dc conductance, g_{dc}, whose probability distribution P(g_{dc}) is identical to the one exhibited by a 1D wire of the same length L and disorder strength placed in a Landauer setup. (ii) A "multifloquet" regime for small L and weak coupling to the reservoir, which exhibits large currents and conductances that can be g_{dc} > 1, in spite of the fact that the ring contains a single electronic transmission channel. The crossover length between the multifloquet to the single channel transport regime, L_c, is controlled by the coupling to the reservoir.
description: 5 pages, 4 figures
Thermometry of one-dimensional Bose gases with neural networks
Creators: name: Møller, Frederik
name: Schweigler, Thomas
name: Tajik, Mohammadamin
name: Sabino, João
name: Cataldini, Federica
name: Ji, Si-Cong
name: Schmiedmayer, Jörg
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We design a neural network to extract and process features from absorption images taken of one-dimensional Bose gases in the quasi-condensate regime. Specifically, the network is trained to predict both the temperature of single realizations of the system and the uncertainty thereof. For multiple realizations, the individual predictions can be combined in an estimate of the mean temperature, improving precision. We benchmark our model on both simulated and experimentally measured data and compare it to the established method of density ripples thermometry. We find the predictions of the two methods compatible, although the neural network reaches similar precision needing much fewer realizations, thus highlighting the efficiency gain achievable when incorporating neural networks into analysis of data from cold gas experiments. Further, we study feature maps to reveal which local features of the condensate are extracted by the network and how said features correlate with properties of the system. A similar analysis could be employed to uncover physical relations in more complex systems.
description: 18 pages, 9 figures
Twisting gauged non-linear sigma-models
Creators: name: Baptista, J. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider gauged sigma-models from a Riemann surface into a Kaehler and hamiltonian G-manifold X. The supersymmetric N=2 theory can always be twisted to produce a gauged A-model. This model localizes to the moduli space of solutions of the vortex equations and computes the Hamiltonian Gromov-Witten invariants. When the target is equivariantly Calabi-Yau, i.e. when its first G-equivariant Chern class vanishes, the supersymmetric theory can also be twisted into a gauged B-model. This model localizes to the Kaehler quotient X//G.
description: 33 pages; v2: small additions, published version
Wormholes as Black Hole Foils
Creators: name: Damour, Thibault
name: Solodukhin, Sergey N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study to what extent wormholes can mimic the observational features of black holes. It is surprisingly found that many features that could be thought of as ``characteristic'' of a black hole (endowed with an event horizon) can be closely mimicked by a globally static wormhole, having no event horizon. This is the case for: the apparently irreversible accretion of matter down a hole, no-hair properties, quasi-normal-mode ringing, and even the dissipative properties of black hole horizons, such as a finite surface resistivity equal to 377 Ohms. The only way to distinguish the two geometries on an observationally reasonable time scale would be through the detection of Hawking's radiation, which is, however, too weak to be of practical relevance for astrophysical black holes. We point out the existence of an interesting spectrum of quantum microstates trapped in the throat of a wormhole which could be relevant for storing the information ``lost'' during a gravitational collapse.
description: 13 pages, no figures, Latex
AMPLE: An Adaptive Multiple Path Loss Exponent Radio Propagation Model Considering Environmental Factors
Creators: name: Zhou, Lingyou
name: Zhang, Jie
name: Zhang, Jiliang
name: Cetinkaya, Oktay
name: Jubb, Steve
Publisher: name: arXiv
Year: 2023
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present AMPLE -- a novel multiple path loss exponent (PLE) radio propagation model that can adapt to different environmental factors. The proposed model aims at accurately predicting path loss with low computational complexity considering environmental factors. In the proposed model, the scenario under consideration is classified into regions from a raster map, and each type of region is assigned with a PLE. The path loss is then computed based on a direct path between the transmitter (Tx) and receiver (Rx), which records the intersected regions and the weighted region path loss. To regress the model, the parameters, including PLEs, are extracted via measurement and the region map. We also verify the model in a suburban area. To the best of our knowledge, this is the first time that a multi-slope model precisely maps PLEs and region types. Besides, this model can be integrated into map systems by creating a new path loss attribute for digital maps.
description: This paper has been submitted to IEEE Transactions for possible publications
Application of a hierarchical MCMC follow-up to Advanced LIGO continuous gravitational-wave candidates
Creators: name: Tenorio, Rodrigo
name: Keitel, David
name: Sintes, Alicia M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the first application of a hierarchical Markov Chain Monte Carlo (MCMC) follow-up on continuous gravitational-wave candidates from real-data searches. The follow-up uses an MCMC sampler to draw parameter-space points from the posterior distribution, constructed using the matched-filter as a log-likelihood. As outliers are narrowed down, coherence time increases, imposing more restrictive phase-evolution templates. We introduce a novel Bayes factor to compare results from different stages: The signal hypothesis is derived from first principles, while the noise hypothesis uses extreme value theory to derive a background model. The effectiveness of our proposal is evaluated on fake Gaussian data and applied to a set of 30 outliers produced by different continuous wave searches on O2 Advanced LIGO data. The results of our analysis suggest all but five outliers are inconsistent with an astrophysical origin under the standard continuous wave signal model. We successfully ascribe four of the surviving outliers to instrumental artifacts and a strong hardware injection present in the data. The behavior of the fifth outlier suggests an instrumental origin as well, but we could not relate it to any known instrumental cause.
description: 23 pages, 15 figures, matches PRD published version
title:  L’approche anthropologique du texte littéraire francophone : une clé de l’enseignement de l’interculturel à l’université marocaine
Creators: name: Lahmami  ,  Hind
Publisher: name: Roma TrE-Press
Year: 2021

description: L’approche anthropologique du texte littéraire peut être une piste pour un regain d’intérêt pour la littérature. Le choix de textes littéraires francophones, maghrébins plus précisément, semble être un avantage pour une compréhension optimale et une appropriation rapide de la langue. Le texte littéraire marocain est une alternative à investir comme support didactique à l’enseignement de l’interculturel. Il donne beaucoup d’importance aux questions identitaire et culturelle et véhicule ainsi un certain nombre de valeurs éthiques, pour enseigner l’interculturel à l’université marocaine et, de là, doter les étudiants de la compétence interculturelle.
description: Interculture : contributions, réseaux, spécificités des contextes francophones
Ilyobates bennetti Donisthorpe 1914
Creators: name: Webster, Reginald
name: Klimaszewski, Jan
name: Pelletier, Georges
name: Savard, Karine
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Ilyobates
Ilyobates bennetti

description: Ilyobates bennetti Donisthorpe, 1914 Fig 15, Map 15 New Records. CANADA, New Brunswick, Sunbury Co., Lakeville Corner, 45.9008°N, 66.2414°W, 12.VII.2006, R.P. Webster (1 ♀, RWC); York Co., Fredericton, at Saint John River, 45.9588°N, 66.6254°W, 7.VI.2005, R.P. Webster (1 Map Į5. Collection localities in New Brunswick, Canada of Ilyobates bennetti. ♁, 2 sex undetermined, LFC, RWC); Charters Settlement, 45.8395°N, 66.7391°W, 29.VIII.2007, R.P. Webster (1 sex undetermined, RWC). Bionomic Notes. This adventive species was collected in litter at the base of a tree in a silver maple swamp, in flood debris along a river margin, and among decaying corncobs and cornhusks near a home in a forested residential area. Majka and Klimaszewski (2008d) reported this species from pitfall traps in pastures and a blueberry field in Nova Scotia. In Europe this species has been reported from similar habitats (Assing 1999). Adults were collected in June, July, and August. Collection method: sifting. Distribution in Canada and Alaska. QC, NB, NS (Assing 1999; Gouix and Klimaszewski 2007; Majka and Klimaszewski 2008d).
description: Published as part of Webster, Reginald, Klimaszewski, Jan, Pelletier, Georges & Savard, Karine, 2009, New Staphylinidae (Coleoptera) records with new collection data from New Brunswick, Canada. I. Aleocharinae, pp. 171-248 in ZooKeys 22 (22) on pages 191-192, DOI: 10.3897/zookeys.22.152, http://zenodo.org/record/576537
description: {"references": ["Donisthorpe H (1914) Th ree myrmecological notes. Th e Entomologist's Record 26: 136 - 138.", "Majka CG, Klimaszewski J (2008 d) Adventive Staphylinidae (Coleoptera) of the Maritime Provinces of Canada: further contributions. ZooKeys 2: 151 - 174.", "Assing V (1999) A revision of Ilyobate s Kraatz, 1856 (Coleoptera: Staphylinidae, Aleocharinae, Oxypodini). Beitraege zur entomologie 49: 295 - 342.", "Gouix N, Klimaszewski J (2007) Catalogue of Aleocharine Rove Beetles of Canada and Alaska (Coleoptera, Staphylinidae, Aleocharinae). Pensoft Publishers, Sofia-Moscow, 165 pp."]}