cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1 of Improving body image at scale among Brazilian adolescents: study protocol for the co-creation and randomised trial evaluation of a chatbot intervention
Creators: name: Matheson, E. L.
name: Smith, H. G.
name: Amaral, A. C. S.
name: Meireles, J. F. F.
name: Almeida, M. C.
name: Mora, G.
name: Leon, C.
name: Gertner, G.
name: Ferrario, N.
name: Suarez Battan, L.
name: Linardon, J.
name: Fuller-Tyszkiewicz, M.
name: Diedrichs, P. C.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1.
Visualising Argumentation Graphs with Graph Embeddings and t-SNE
Creators: name: Malmqvist, Lars
name: Yuan, Tommy
name: Manandhar, Suresh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper applies t-SNE, a visualisation technique familiar from Deep Neural Network research to argumentation graphs by applying it to the output of graph embeddings generated using several different methods. It shows that such a visualisation approach can work for argumentation and show interesting structural properties of argumentation graphs, opening up paths for further research in the area.
Zero-temperature study of vacancies in solid 4He
Creators: name: Rossi, M.
name: Vitali, E.
name: Galli, D. E.
name: Reatto, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We are investigating the properties of vacancies in solid 4He with the exact zero temperature SPIGS method. Our aim is to study the possibility of phase--separation between vacancies and the perfect crystal. We find a significant correlation among vacancies both in two and in three dimensional solid 4He. In 3D we have considered up to 5 vacancies in a hcp crystal at a density rho = 0.0293 AA^-3, close to the melting, and in 2D we have considered up to 6 vacancies in a triangular crystal at rho = 0.0765 AA^-2. In all the considered cases the correlation among vacancies seems to display an exponential decay that would suggest the presence of a bound state. The systematically sublinear dependence on the number of vacancies found for the activation energy strengthens the indication of an attractive interaction, even if we have direct evidence that vacancies do not form a single compact cluster.
description: 4 pages, LT25 Conference proceedings
Reverse Logistics Support Tool
Creators: name: Mallick, Pravin Kumar
name: Bang Salling, Kim
name: Pigosso, Daniela Cristina Antelmi
name: McAloone, Tim C.
Publisher: name: Technical University of Denmark
Year: 2023
Subjects: classificationCode: 410404
subject: Environmental management
classificationCode: 410499
subject: Environmental management not elsewhere classified

description: The Reverse Logistics Support Tool and the associated support tools help companies design and implement Reverse Logistics. It is built upon the principles of configuration systems to adapt the various aspects of RL design into a knowledge base and, subsequently, into an Excel-based support tool that provides alternative ways of approaching the various aspects associated with RL systems. The support tool is organised into modules that include assessing the various factors that can influence RL design (e.g., company’s motivation/drivers, product characteristics, the existence and nature of Extended Producer Responsibility legislation), the design of the RL system (the RL network/ channel and other aspects such as stakeholder collaboration, regulatory framework conditions, consumer behaviour and incentives, use of digital technologies and key performance indicators) and finally, aspects around governance/programme management.This data is part of the Collection- Reverse Logistics Support Tool (10.11583/DTU.c.6839169)
Testing a Battery Management System via Criticality-based Rare Event Simulation
Creators: name: Grujic, Daniel
name: Henning, Tabea
name: García, Emilio José Calleja
name: Bergmann, Andre
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: For the validation of safety-critical systems regarding safety and comfort, e.g., in the context of automated driving, engineers often have to cope with large (parametric) test spaces for which it is infeasible to test through all possible parameter configurations. At the same time, critical behavior of a well-engineered system with respect to prescribed safety and comfort requirements tends to be extremely rare, speaking of probabilities of order $10^{-6}$ or less, but clearly has to be examined carefully for valid argumentation. Hence, common approaches such as boundary value analysis are insufficient while methods based on random sampling from the parameter space (simple Monte Carlo) lack the ability to detect these rare critical events efficiently, i.e., with appropriate simulation budget. For this reason, a more sophisticated simulation-based approach is proposed which employs optimistic optimization on an objective function called "criticality" in order to identify effectively the set of critical parameter configurations. Within the scope of the ITEA 3 TESTOMAT project (http://www.testomatproject.eu/) the collaboration partners OFFIS e.V. and AKKA Germany GmbH conducted a case study on applying criticality-based rare event simulation to the charging process of an automotive battery management system given as a model. The present technical report documents the industrial use case, the approach, application and experimental results, as well as lessons learned from the case study.
description: A more cohensive version of this technical report has been presented at the MSCPES 2021 workshop and will be published by ACM, available at https://doi.org/10.1145/3470481.3472701
Multi-Scale CLEAN deconvolution of radio synthesis images
Creators: name: Cornwell, T. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Radio synthesis imaging is dependent upon deconvolution algorithms to counteract the sparse sampling of the Fourier plane. These deconvolution algorithms find an estimate of the true sky brightness from the necessarily incomplete sampled visibility data. The most widely used radio synthesis deconvolution method is the CLEAN algorithm of Hogbom. This algorithm works extremely well for collections of point sources and surprisingly well for extended objects. However, the performance for extended objects can be improved by adopting a multi-scale approach. We describe and demonstrate a conceptually simple and algorithmically straightforward extension to CLEAN that models the sky brightness by the summation of components of emission having different size scales. While previous multiscale algorithms work sequentially on decreasing scale sizes, our algorithm works simultaneously on a range of specified scales. Applications to both real and simulated data sets are given.
description: Submitted to IEEE Special Issue on Signal Processing
title: Compendio de Nomenclatura Académica para Inteligencia Artificial: Modelo Interdisciplinario de Clasificación y Glosario Epistemológico
title: Compendio de Nomenclatura Académica para Inteligencia Artificial: Modelo Interdisciplinario de Clasificación y Glosario Epistemológico
titleType: Subtitle
Creators: name: Ramírez Olguín, Luis Francisco
Publisher: name: Zenodo
Year: 2025

description: Este compendio propone un modelo académico interdisciplinario para la nomenclatura y clasificación de fenómenos en sistemas de inteligencia artificial. A partir de fundamentos filosóficos, computacionales y cognitivos, se desarrollan nueve categorías conceptuales que permiten analizar procesos como la generación de conocimiento, el comportamiento adaptativo, las disfunciones cognitivas artificiales y la estructura interna de la IA. Cada categoría se acompaña de términos específicos construidos con rigor etimológico y epistémico, seguidos de ejemplos aplicados a contextos técnicos y científicos. La finalidad de esta obra es ofrecer un marco teórico coherente y útil para el estudio, diagnóstico y diseño de sistemas inteligentes avanzados.
Search for solar axions with mass around 1 eV using coherent conversion of axions into photons
Creators: name: Inoue, Y.
name: Akimoto, Y.
name: Ohta, R.
name: Mizumoto, T.
name: Yamamoto, A.
name: Minowa, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A search for solar axions has been performed using an axion helioscope which is equipped with a 2.3m-long 4T superconducting magnet, a gas container to hold dispersion-matching gas, PIN-photodiode X-ray detectors, and a telescope mount mechanism to track the sun. A mass region around m_a = 1eV was newly explored. From the absence of any evidence, analysis sets a limit on axion-photon coupling constant to be g < 5.6-13.4x10^{-10} GeV^{-1} for the axion mass of 0.84
description: 13 pages, 6 figures, to be published in PLB
Melting at the absolute zero of temperature: Quantum phase transitions in condensed matter
Creators: name: Vojta, Matthias
name: Vojta, Thomas
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We dedicate this article to our father, Prof. Dr. Guenter Vojta, on the occasion of his 80th birthday. While colleagues appreciate him as an excellent scientist with widespread interests and an amazingly broad knowledge, we see in him the father, teacher, friend, and much more. Thanks to him, we grew up immersed in the fascinating world of physics from an early age. His example and encouragement have crucially influenced our own lives.
description: to appear in the Festschrift published on the occasion of Prof. Guenter Vojta's 80th birthday
title: Finite-Time Control Strategies for Rendezvous and Proximity Operations
Creators: name: Akagi, John Tamotsu
Publisher: name: Utah State University
Year: 2024

description: One common metric to use when designing a controller is the time that the system will take to reach the desired state. Unfortunately, many approaches to developing controllers only guarantee that the system will approach, but not exactly reach, the desired state. This can become a limitation in time-sensitive situations where rapid and complete convergence is necessary. One group of control methods, known as finite-time control, does guarantee both faster convergence and that the desired state will be reached, but often fails to define exactly what time that will occur, how much control will be used to get there, and how much error the system will experience before arriving. This dissertation examines a selection of control laws which guarantee finite-time stability. Each control law has parameters which can be selected, and the relationship between those parameters and the controller performance are analyzed. This allows for easier and faster design of controllers which guarantee finite-time convergence and also allows for other system behaviors to be designed for. The tuned control laws were tested and validated in simulations which modeled the rendezvous between two spacecraft.
The C60:C60+ ratio in diffuse and translucent interstellar clouds
Creators: name: Rouillé, Gaël
name: Krasnokutski, Serge A.
name: Carpentier, Yvain
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. Insight into the conditions that drive the physics and chemistry in interstellar clouds is gained from determining the abundance and charge state of their components. Aims. We propose an evaluation of the C60:C60+ ratio in diffuse and translucent interstellar clouds that exploits electronic absorption bands so as not to rely on ambiguous IR emission measurements. Methods. The ratio is determined by analyzing archival spectra and literature data. Information on the cation population is obtained from published characteristics of the main diffuse interstellar bands attributed to C60+ and absorption cross sections already reported for the vibronic bands of the cation. The population of neutral molecules is described in terms of upper limit because the relevant vibronic bands of C60 are not brought out by observations. We revise the oscillator strengths reported for C60 and measure the spectrum of the molecule isolated in Ne ice to complete them. Results. We scale down the oscillator strengths for absorption bands of C60 and find an upper limit of approximately 1.3 for the C60:C60+ ratio. Conclusions. We conclude that the fraction of neutral molecules in the buckminsterfullerene population of diffuse and translucent interstellar clouds may be notable despite the non-detection of the expected vibronic bands. More certainty will require improved laboratory data and observations.
description: 13 pages, 7 figures, to be published in Astronomy & Astrophysics
Songs of ethnic Canada : (an interdisciplinary teachers’ guide for grades K-12, based on the folksongs of four Canadian ethnic groups)
Creators: name: Luccock, Norma A.
Publisher: name: University of British Columbia
Year: 2010

description: PROBLEM: One-third of Canada's population is now neither British nor French, yet few multicultural materials are available for teachers' use. The writer's aim was, therefore, to locate songs of four of Canada's minority groups and prepare them for use in Music, Social Studies, and Language Arts classrooms. PROCEDURE: For each group the writer chose four or five songs from ethnomusicological collections. The following aids were prepared for each song: adapted lyrics, orchestrations for Orff instruments, suggestions for use in Music classes and other subject areas, and a recording on tape cassette. CONCLUSION: Hopefully preparation of these materials will encourage educators to include multicultural Canadian songs in their programs.
Bulk-like d band of SrVO3 under a self-protective cap layer
Creators: name: Takizawa, M.
name: Minohara, M.
name: Kumigashira, H.
name: Toyota, D.
name: Oshima, M.
name: Wadati, H.
name: Yoshida, T.
name: Fujimori, A.
name: Lippmaa, M.
name: Kawasaki, M.
name: Koinuma, H.
name: Sordi, G.
name: Rozenberg, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have performed a detailed angel-resolved photoemission spectroscopy study of in-situ prepared SrVO3 thin films. Naturally capped by a ``transparent'' protective layer, contributions from surface states centered at ~ -1.5 eV are dramatically reduced, enabling us to study the bulk V 3d states. We have observed a clear band dispersion not only in the coherent quasiparticle part but also in the incoherent part, which are reproduced by dynamical mean-field theory calculations and the spectral weight of the incoherent part is stronger within the Fermi surface.
Stochastic Quantization of Scalar Fields in de Sitter Spacetime
Creators: name: de Aguiar, T. C.
name: Menezes, G.
name: Svaiter, N. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the stochastic quantization method for scalar fields defined in a curved manifold. The two-point function associated to a massive self-interacting scalar field is evaluated, up to the first order level in the coupling constant $λ$, for the case of de Sitter Euclidean metric. Its value for the asymptotic limit of the Markov parameter $τ\to\infty$ is exhibited. We discuss in detail the covariant stochastic regularization to render the one-loop two-point function finite in the de Sitter Euclidean metric.
QCD at finite chemical potential with six time slices
Creators: name: Gavai, R. V.
name: Gupta, Sourendu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the Taylor expansion of the baryon number susceptibility, and hence, pressure, in a series in the baryon chemical potential (mu_B) through a lattice simulation with light dynamical staggered quarks at a finer lattice cutoff a=1/6T. We determine the QCD cross over coupling at mu_B=0. We find the radius of convergence of the series at various temeperatures, and bound the location of the QCD critical point to be T^E/T_c = 0.94 and mu_B^E/T < 1.8. We also investigate the extrapolation of various susceptibilities and linkages to finite chemical potential.
description: 16 pages, 12 figures
A randomized algorithm for principal component analysis
Creators: name: Rokhlin, Vladimir
name: Szlam, Arthur
name: Tygert, Mark
Publisher: name: arXiv
Year: 2008
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: Principal component analysis (PCA) requires the computation of a low-rank approximation to a matrix containing the data being analyzed. In many applications of PCA, the best possible accuracy of any rank-deficient approximation is at most a few digits (measured in the spectral norm, relative to the spectral norm of the matrix being approximated). In such circumstances, efficient algorithms have not come with guarantees of good accuracy, unless one or both dimensions of the matrix being approximated are small. We describe an efficient algorithm for the low-rank approximation of matrices that produces accuracy very close to the best possible, for matrices of arbitrary sizes. We illustrate our theoretical results via several numerical examples.
description: 26 pages, 6 tables, 1 figure; to appear in the SIAM Journal on Matrix Analysis and Applications
Phase-field approach to polycrystalline solidification including heterogeneous and homogeneous nucleation
Creators: name: Pusztai, Tamás
name: Tegze, György
name: Tóth, Gyula I.
name: Környei, László
name: Bansel, Gurvinder
name: Fan, Zhungyun
name: Gránásy, László
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Advanced phase-field techniques have been applied to address various aspects of polycrystalline solidification including different modes of crystal nucleation. The height of the nucleation barrier has been determined by solving the appropriate Euler-Lagrange equations. The examples shown include the comparison of various models of homogeneous crystal nucleation with atomistic simulations for the single component hard-sphere fluid. Extending previous work for pure systems (Granasy L, Pusztai T, Saylor D and Warren J A 2007 Phys. Rev. Lett. 98 art no 035703), heterogeneous nucleation in unary and binary systems is described via introducing boundary conditions that realize the desired contact angle. A quaternion representation of crystallographic orientation of the individual particles (outlined in Pusztai T, Bortel G and Granasy L 2005 Europhys. Lett. 71 131) has been applied for modeling a broad variety of polycrystalline structures including crystal sheaves, spherulites and those built of crystals with dendritic, cubic, rhombododecahedral, truncated octahedral growth morphologies. Finally, we present illustrative results for dendritic polycrystal-line solidification obtained using an atomistic phase-field model.
description: 17 pages, 12 figures
Regular black holes in an asymptotically de Sitter universe
Creators: name: Matyjasek, Jerzy
name: Tryniecki, Dariusz
name: Klimek, Mariusz
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A regular solution of the system of coupled equations of the nonlinear electrodynamics and gravity describing static and spherically-symmetric black holes in an asymptotically de Sitter universe is constructed and analyzed. Special emphasis is put on the degenerate configurations (when at least two horizons coincide) and their near horizon geometry. It is explicitly demonstrated that approximating the metric potentials in the region between the horizons by simple functions and making use of a limiting procedure one obtains the solutions constructed from maximally symmetric subspaces with different absolute values of radii. Topologically they are $AdS_{2}\times S^{2}$ for the cold black hole, $dS_{2}\times S^{2}$ when the event and cosmological horizon coincide, and the Plebański- Hacyan solution for the ultraextremal black hole. A physically interesting solution describing the lukewarm black holes is briefly analyzed
Negative differential conductivity in far-from-equilibrium quantum spin chains
Creators: name: Benenti, Giuliano
name: Casati, Giulio
name: Prosen, Tomaz
name: Rossini, Davide
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that, when a finite anisotropic Heisenberg spin-1/2 chain in the gapped regime is driven far from equilibrium, oppositely polarized ferromagnetic domains build up at the edges of the chain, thus suppressing quantum spin transport. As a consequence, a negative differential conductivity regime arises, where increasing the driving decreases the current. The above results are explained in terms of magnon localization and are shown to be structurally stable against breaking of integrability.
description: 5 pages, 4 figures. Published version
The transverse proximity effect in the z ~ 2 Lyman-alpha forest suggests QSO episodic lifetimes of ~1 Myr
Creators: name: Kirkman, David
name: Tytler, David
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We look for signs of the H~I transverse proximity effect in the spectra of 130 QSO pairs, most with transverse separations in the plane of the sky of 0.1 -- 3 Mpc at z ~ 2.2. We expected to see a decrease in Lyman-alpha forest HI absorption in the spectrum of background QSOs near the position of foreground QSOs. Instead we see no change in the absorption in front of the foreground QSOs, and we see evidence for a 50% increase in the absorption out to 6 Mpc behind the foreground QSOs. Further, we see no change in the H I absorption along the line-of-sight to the foreground QSOs, the normal line-of-sight proximity effect. We may account for the lack of change in the H I absorption if the effect of extra UV photons is canceled by higher gas density around QSOs. If so, the increase in absorption behind the QSOs then suggests that the higher gas density there is not canceled by the UV radiation from the QSOs. We can explain our observations if QSOs have had their current UV luminosities for less than approximately a million years, a time scale that has been suggested for accretion disk instabilities and gas depletion.
description: Submitted for publication in MNRAS
Measurement of Neutrino Oscillations with the MINOS Detectors in the NuMI Beam
Creators: name: MINOS Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: This letter reports new results from the MINOS experiment based on a two-year exposure to muon neutrinos from the Fermilab NuMI beam. Our data are consistent with quantum mechanical oscillations of neutrino flavor with mass splitting $|Δm^2|=(2.43\pm 0.13)\times10^{-3}$ eV$^2$ (68% confidence level) and mixing angle $\sin^2(2θ)>0.90$ (90% confidence level). Our data disfavor two alternative explanations for the disappearance of neutrinos in flight, namely neutrino decays into lighter particles and quantum decoherence of neutrinos, at the 3.7 and 5.7 standard deviation levels, respectively.
description: 5 pages, 4 figures, submitted to Phys. Rev. Lett
Additional file 1 of The validation and reliability of a Japanese version of the Problematic Online Gaming Questionnaire (POGQ-J)
Creators: name: Inoue, Kazuya
name: Yokomitsu, Kengo
name: Irie, Tomonari
name: Matsuyama, Makoto
name: Tanaka, Masanori
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. The Problematic Online Gaming Questionnaire-Japanese version (POGQ-J).
Social values and educational change : a study of those values said to be ’traditional’ in Chilean society, their change in historical time and the reflection of change in Chilean education
Creators: name: De Vescovi, David
Publisher: name: University of British Columbia
Year: 2010

description: The present study deals with Social Values and educational change in Chile. An investigation of those values said to be "traditional" in Chilean society, their change in historical time and the reflection of change in Chilean education. The comparative method was explored and found to be an advanced procedure of investigation that requires careful planning together with a substantial amount of relevant description. The descriptive approach was found to be a relatively simple method that prepares conditions for a future comparative method. This approach is more suitable at this stage for the Chilean educational reality. In order to enrich the descriptive approach a structural-functionalist perspective was used. The combination of the descriptive approach and structural-functionalist perspective generated a framework that permitted an historical and sociological interpretation of the Chilean traditional value systems. A certain degree of maintenance and continuity of traditional values -was identified, together with the generation of new values. A conscious social integration of traditional and new value systems was observed in, the Chilean educational process.
Improved predictions of nuclear reaction rates with the TALYS reaction code for astrophysical applications
Creators: name: Goriely, S.
name: Hilaire, S.
name: Koning, A. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nuclear reaction rates of astrophysical applications are traditionally determined on the basis of Hauser-Feshbach reaction codes. These codes adopt a number of approximations that have never been tested, such as a simplified width fluctuation correction, the neglect of delayed or multiple-particle emission during the electromagnetic decay cascade, or the absence of the pre-equilibrium contribution at increasing incident energies. The reaction code TALYS has been recently updated to estimate the Maxwellian-averaged reaction rates that are of astrophysical relevance. These new developments enable the reaction rates to be calculated with increased accuracy and reliability and the approximations of previous codes to be investigated. The TALYS predictions for the thermonuclear rates of relevance to astrophysics are detailed and compared with those derived by widely-used codes for the same nuclear ingredients. It is shown that TALYS predictions may differ significantly from those of previous codes, in particular for nuclei for which no or little nuclear data is available. The pre-equilibrium process is shown to influence the astrophysics rates of exotic neutron-rich nuclei significantly. For the first time, the Maxwellian-averaged (n,2n) reaction rate is calculated for all nuclei and its competition with the radiative capture rate is discussed. The TALYS code provides a new tool to estimate all nuclear reaction rates of relevance to astrophysics with improved accuracy and reliability.
description: 10 pages, 7 figures. Papers accepted for publication in A&A Journal
Environmental Effects on Satellite Galaxies: The Link Between Concentration, Size and Colour Profile
Creators: name: Weinmann, Simone M.
name: Kauffmann, Guinevere
name: Bosch, Frank C. van den
name: Pasquali, Anna
name: McIntosh, Daniel H.
name: Mo, Houjun
name: Yang, Xiaohu
name: Guo, Yicheng
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the SDSS DR4 group catalogue of Yang et al. (2007), we investigate sizes, concentrations, colour gradients and surface brightness profiles of central and satellite galaxies. We compare central and satellite galaxies at fixed stellar mass, in order to disentangle environmental from stellar mass dependencies. Early and late type galaxies are defined according to concentration. We find that at fixed stellar mass, late type satellite galaxies have smaller radii and larger concentrations than late type central galaxies. No such differences are found for early-type galaxies. We have also constructed surface brightness and colour profiles for the central and satellite galaxies in our sample. We find that late-type satellite galaxies have a lower surface brightness and redder colours than late-type central galaxies. We show that all observed differences between satellite and central galaxies can be explained by a simple fading model, in which the star formation in the disk decreases over timescales of 2-3 Gyr after a galaxy becomes a satellite. Processes that induce strong morphological changes (e.g. harassment) and processes that strip the galaxy of its entire ISM need not to be invoked in order to explain the environmental dependencies we find.
description: 17 pages, 13 figures, MNRAS accepted. Discussion has been extended and includes now the effects of dust and the colour profiles of subpopulations. Some references added
Evaluation of energy level to be absorbed by tractor ROPS: Actual Tests, Simulation and Computation
Creators: name: Franceschetti, Bruno <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: AGR/09 Meccanica agraria

description: A highly dangerous situations for tractor driver is the lateral rollover in operating conditions. Several accidents, involving tractor rollover, have indeed been encountered, requiring the design of a robust Roll-Over Protective Structure (ROPS). The aim of the thesis was to evaluate tractor behaviour in the rollover phase so as to calculate the energy absorbed by the ROPS to ensure driver safety. A Mathematical Model representing the behaviour of a generic tractor during a lateral rollover, with the possibility of modifying the geometry, the inertia of the tractor and the environmental boundary conditions, is proposed. The purpose is to define a method allowing the prediction of the elasto-plastic behaviour of the subsequent impacts occurring in the rollover phase. A tyre impact model capable of analysing the influence of the wheels on the energy to be absorbed by the ROPS has been also developed. Different tractor design parameters affecting the rollover behaviour, such as mass and dimensions, have been considered. This permitted the evaluation of their influence on the amount of energy to be absorbed by the ROPS. The mathematical model was designed and calibrated with respect to the results of actual lateral upset tests carried out on a narrow-track tractor. The dynamic behaviour of the tractor and the energy absorbed by the ROPS, obtained from the actual tests, showed to match the results of the model developed. The proposed approach represents a valuable tool in understanding the dynamics (kinetic energy) and kinematics (position, velocity, angular velocity, etc.) of the tractor in the phases of lateral rollover and the factors mainly affecting the event. The prediction of the amount of energy to be absorbed in some cases of accident is possible with good accuracy. It can then help in designing protective structures or active security devices.
Revisiting State Augmentation methods for Reinforcement Learning with Stochastic Delays
Creators: name: Nath, Somjit
name: Baranwal, Mayank
name: Khadilkar, Harshad
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Several real-world scenarios, such as remote control and sensing, are comprised of action and observation delays. The presence of delays degrades the performance of reinforcement learning (RL) algorithms, often to such an extent that algorithms fail to learn anything substantial. This paper formally describes the notion of Markov Decision Processes (MDPs) with stochastic delays and shows that delayed MDPs can be transformed into equivalent standard MDPs (without delays) with significantly simplified cost structure. We employ this equivalence to derive a model-free Delay-Resolved RL framework and show that even a simple RL algorithm built upon this framework achieves near-optimal rewards in environments with stochastic delays in actions and observations. The delay-resolved deep Q-network (DRDQN) algorithm is bench-marked on a variety of environments comprising of multi-step and stochastic delays and results in better performance, both in terms of achieving near-optimal rewards and minimizing the computational overhead thereof, with respect to the currently established algorithms.
description: Accepted at CIKM'21
Search for Sub-threshold Photoproduction of J/Psi Mesons
Creators: name: Bosted, P.
name: Dunne, J.
name: Lee, C. A.
name: Junnarkar, P.
name: Arrington, J.
name: Asaturyan, R.
name: Benmokhtar, F.
name: Christy, M. E.
name: Chudakov, E.
name: Clasie, B.
name: Connell, S. H.
name: Dalton, M. M.
name: Daniel, A.
name: Day, D.
name: Dutta, D.
name: Ent, R.
name: Fomin, N.
name: Gaskell, D.
name: Horn, T.
name: Kalantarians, N.
name: Keppel, C. E.
name: Meekins, D. G.
name: Mkrtchyan, H.
name: Navasardyan, T.
name: Roche, J.
name: Rodriguez, V. M.
name: Kiselev, D.
name: Seely, J.
name: Slifer, K.
name: Strikman, M.
name: Tajima, S.
name: Testa, G.
name: Trojer, Roman
name: Wesselmann, F. R.
name: Wood, S. A.
name: Zheng, X. C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search was made for sub-threshold $J/ψ$ production from a carbon target using a mixed real and quasi-real Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No events were observed, which is consistent with predictions assuming quasi-free production. The results place limits on exotic mechanisms that strongly enhance quasi-free production.
description: 19 pages, 7 figures, to be submitted to Phys. Rev. C
MalPhase: Fine-Grained Malware Detection Using Network Flow Data
Creators: name: Piskozub, Michal
name: De Gaspari, Fabio
name: Barr-Smith, Frederick
name: Mancini, Luigi V.
name: Martinovic, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Economic incentives encourage malware authors to constantly develop new, increasingly complex malware to steal sensitive data or blackmail individuals and companies into paying large ransoms. In 2017, the worldwide economic impact of cyberattacks is estimated to be between 445 and 600 billion USD, or 0.8% of global GDP. Traditionally, one of the approaches used to defend against malware is network traffic analysis, which relies on network data to detect the presence of potentially malicious software. However, to keep up with increasing network speeds and amount of traffic, network analysis is generally limited to work on aggregated network data, which is traditionally challenging and yields mixed results. In this paper we present MalPhase, a system that was designed to cope with the limitations of aggregated flows. MalPhase features a multi-phase pipeline for malware detection, type and family classification. The use of an extended set of network flow features and a simultaneous multi-tier architecture facilitates a performance improvement for deep learning models, making them able to detect malicious flows (>98% F1) and categorize them to a respective malware type (>93% F1) and family (>91% F1). Furthermore, the use of robust features and denoising autoencoders allows MalPhase to perform well on samples with varying amounts of benign traffic mixed in. Finally, MalPhase detects unseen malware samples with performance comparable to that of known samples, even when interlaced with benign flows to reflect realistic network environments.
description: Paper accepted for publication at ACM AsiaCCS 2021
INCREASING AWARENESS AND KNOWLEDGE AMONG ADULT LATINOS REGARDING SEXUALLY TRANSMITTED INFECTIONS
Creators: name: Ijeoma Eze
Publisher: name: Zenodo
Year: 2018

description: BACKGROUND: Latinos in the United States are disproportionately affected by Human Immunodeficiency Virus and sexually transmitted infections (STIs). They account for about 24% of newly diagnosed AIDS cases each year and are two to three times more likely to develop STIs when compared with non-Latino whites. Limited knowledge of STIs has remained one of the contributing factors to the disparity. PURPOSE: To implement an educational bundle and evaluate its effectiveness in increasing STI knowledge and consistent condom use among adult Latinos seen in an outpatient clinic. METHOD: A pre- and post-test design was used to evaluate changes in STI knowledge and consistency of condom use. An educational bundle consisted of YouTube STI-related videos, a pre-designed one to one educational session, and provision of condoms and STI-related educational materials. Self-administered questionnaires were used to collect data at baseline and one week post implementation of the educational bundle. RESULTS: Ranging in ages 19 to 60 years, 46 Latinos participated. The total mean STI knowledge and condom use frequency improved from pre-test (M = 1.67, M = 3.09) to post-test (M = 3.80, M = 5.33). Results of paired samples t-tests demonstrated statistical significant differences between total mean STI knowledge iv (t (45) = -15.48, p < .001) and condom use frequency (t(45) = -7.09, p < .001) at pre-test and post-testing. CONCLUSION: The educational bundle was effective in increasing STI knowledge and consistent condom use among adult Latinos in an outpatient clinic. Further study needs to be done to determine the long-term effect of this mode of education for this population.
title: Preface -- 26th International Symposium on Theoretical Aspects of Computer Science
Creators: name: Albers, Susanne
name: Marion, Jean-Yves
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2009
Subjects: subject: Symposium
subject: Theoretical computer science
subject: Algorithms and data structures
subject: Automata and formal languages
subject: Computational and structural complex

description: The interest in STACS has remained at a high level over the past years. The STACS 2009 call for papers led to over 280 submissions from 41 countries. Each paper was assigned to three program committee members. The program committee held a two-week electronic meeting at the beginning of November and selected 54 papers. As co-chairs of the program committee, we would like to sincerely thank its members and the many external referees for their valuable work. The overall very high quality of the submissions made the selection a difficult task.

We would like to express our thanks to the three invited speakers, Monika Henzinger, Jean-Eric Pin and Nicole Schweikardt, for their contributions to the proceedings.

Special thanks are due to A. Voronkov for his EasyChair software (www.easychair.org). Moreover we would like to thank Sonja Lauer for preparing the conference proceedings and continuous help throughout the conference organization.

For the second time this year's STACS proceedings are published in electronic form. A printed version was also available at the conference, with ISBN 978-3-939897-09-5. The electronic proceedings are available through several portals, and in particular through HAL and DROPS. HAL is an electronic repository managed by several French research agencies, and DROPS is the Dagstuhl Research Online Publication Server. We want to thank both these servers for hosting the proceedings of STACS and guaranteeing them perennial availability. The rights on the articles in the proceedings are kept with the authors and the papers are available freely, under a Creative Commons license (seewww.stacs-conf.org/faq.html for more details).
description: LIPIcs, Vol. 3, 26th International Symposium on Theoretical Aspects of Computer Science, pages i-vii
DEVELOPMENT OF GUIDELINES FOR PRESSURE ULCER PREVENTION
Creators: name: Guzman, Jennifer Lynn
Publisher: name: Zenodo
Year: 2018

description: Pressure ulcers (PU) cost billions of dollars and tens of thousands of lives each year in the United States (AHRQ, 2014). An acute care, community hospital in Riverside County discovered a number of areas indicating improvement needs following a one-day PU prevalence study in the Intensive Care Unit (ICU), Progressive Care Unit (PCU) and Medical Surgical Unit (MS). These areas included appropriateness of Braden scores to patient condition (presence of PU), frequency and timeliness of skin/risk assessment, number of layers between patient and surface, and appropriate use of support surfaces. The facility did not have formal guidelines, education, or standardized competencies for PU prevention. The purpose of this project was to improve competency in PU risk assessment and prevention by developing local guidelines for PU prevention and providing education based on the guidelines. The Plan Do Study Act (PDSA) model was utilized to carry out this quality improvement project. A convenience sample of registered nurses from the MS, PCU, and ICU units evaluated their own attitudes towards PU prevention in order to allow tailoring of educational offerings. Once guidelines were developed and approved, education was provided to all nurses during annual skills day and new staff orientation. A follow up one-day PU prevalence study was conducted in February 2018. Results of the project were promising. In 2016, only 55% of patients had a Braden score documented in the previous 12 hours, which is facility policy. For 2018, 90% of patients had Braden scores within the 12-hour window. In 2016, only 29% of HAPU patients were found to have the recommended two or fewer layers of linen between skin and surface. This jumped to 100% in 2018. The facility now has a formalized plan for preventing PUs as well as improvements in the 2018 one-day prevalence study in the areas of appropriateness of Braden scores to patient condition (presence of pressure ulcer), frequency and timeliness of skin/risk assessment and number of layers between patient and surface. Sustainability is key to any quality improvement project. Education on the PU prevention guidelines will be given to all staff annually. Recommendations have also been made to add the patient’s most recent Braden score to the patient report sheet as well as giving nurses the option to identify a patient as high-risk even if the Braden score does not indicate so. These recommendations are being considered on a company-wide level.
A cryogenic liquid-mirror telescope on the moon to study the early universe
Creators: name: Angel, Roger
name: Worden, Simon P.
name: Borra, Ermanno F.
name: Eisenstein, Daniel J.
name: Foing, Bernard
name: Hickson, Paul
name: Josset, Jean-Luc
name: Ma, Ki Bui
name: Seddiki, Omar
name: Sivanandam, Suresh
name: Thibault, Simon
name: van Susante, Paul
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the feasibility and scientific potential of zenith observing liquid mirror telescopes having 20 to 100 m diameters located on the moon. They would carry out deep infrared surveys to study the distant universe and follow up discoveries made with the 6 m James Webb Space Telescope (JWST), with more detailed images and spectroscopic studies. They could detect objects 100 times fainter than JWST, observing the first, high-red shift stars in the early universe and their assembly into galaxies. We explored the scientific opportunities, key technologies and optimum location of such telescopes. We have demonstrated critical technologies. For example, the primary mirror would necessitate a high-reflectivity liquid that does not evaporate in the lunar vacuum and remains liquid at less than 100K: We have made a crucial demonstration by successfully coating an ionic liquid that has negligible vapor pressure. We also successfully experimented with a liquid mirror spinning on a superconducting bearing, as will be needed for the cryogenic, vacuum environment of the telescope. We have investigated issues related to lunar locations, concluding that locations within a few km of a pole are ideal for deep sky cover and long integration times. We have located ridges and crater rims within 0.5 degrees of the North Pole that are illuminated for at least some sun angles during lunar winter, providing power and temperature control. We also have identified potential problems, like lunar dust. Issues raised by our preliminary study demand additional in-depth analyses. These issues must be fully examined as part of a scientific debate we hope to start with the present article.
description: 35 pages, 11 figures. To appear in Astrophysical Journal June 20 2008
Disordered vortex arrays in a two-dimensional condensate
Creators: name: Madarassy, E. J. M.
name: Barenghi, C. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We suggest a method to create turbulence in a Bose-Einstein condensate. The method consists in, firstly, creating an ordered vortex array, and, secondly, imprinting a phase difference in different regions of the condensate. By solving numerically the two-dimensional Gross-Pitaevskii equation we show that the motion of the resulting positive and negative vortices is disordered.
description: 14 pages, 18 figures, accepted by Geophysical and Astrophysical Fluid Dynamics
Successful type I Leptogenesis with SO(10)-inspired mass relations
Creators: name: Di Bari, Pasquale
name: Riotto, Antonio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It is well-known that thermal leptogenesis through the decays of the lightest right-handed neutrinos encounters serious difficulties when SO(10)-inspired mass conditions are imposed on the Dirac neutrino mass matrix and light neutrino masses are generated through the type I see-saw mechanism. We show that these can be circumvented when the production from the next-to-lightest right-handed neutrinos and flavor effects are properly taken into account. Some conditions on the low energy parameters have to be satisfied in order for inverse processes involving the lightest right-handed neutrino not to wash-out the asymmetry. In particular we find m_1 \gtrsim 0.001 eV, where m_1 is the mass of the lightest left-handed neutrino and that non-vanishing values of the mixing angle theta_13 are preferred in the case of a normal fully hierarchical spectrum of light neutrinos.
description: 18 pages, 6 figures