cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Locus of control and psychosocial adjustment to chronic pain
Creators: name: Hooge, Brenda Lee Sawyer
Publisher: name: University of British Columbia
Year: 2010

description: This study sought to examine the relationships between locus of control, psychosocial adjustment to chronic pain, and reported levels of pain for chronic pain patients who had completed an in-patient, multidisciplinary pain treatment program. The sample consisted of forty one individuals drawn from British Columbia, Alberta, and Saskatchewan all of whom had completed a pain treatment program in Vancouver, British Columbia during the years 1979-1982. All individuals completed the following questionnaires: a Biographical Information Questionnaire, Rotter's Locus of Control Scale, the Adjustment to Chronic Pain Scale (ACPS), and the McGill Pain Questionnaire. Five hypotheses were tested. Hypotheses One, Two, and Three were tested using Pearson Product-Moment correlation coefficients to establish the relationships between variables. Hypotheses Four and Five were tested using independent groups t-tests for the difference between means to determine if there was a statistically significant difference between the means of the two groups on different variables of psychosocial adjustment to chronic pain. Significant negative correlations were found for females between the Locus of Control scores and the ACPS scores suggesting a relationship between an internal locus of control and poor psychosocial adjustment. Similarly, a significant interaction was found between internality and high levels of reported pain for females. For males, a significant correlation was found between external locus of control and high levels of reported pain. A secondary analysis found a significant curvilinear relationship between the extremes of locus of control (i.e. high internals and high externals) and poor psychosocial adjustment to chronic pain. Implications for the constructive use of the locus of control measure as a therapeutic intervention strategy in counselling chronic pain patients are discussed.
Disks around CQ Tau and MWC 758: dense PDR or gas dispersal?
Creators: name: Chapillon, Edwige
name: Guilloteau, Stéphane
name: Dutrey, Anne
name: Piétu, Vincent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The overall properties of disks surrounding intermediate PMS stars (HAe) are not yet well constrained by current observations. The disk inclination, which significantly affect SED modeling, is often unknown. We attempted to resolve the disks around CQ Tau and MWC 758, to provide accurate constraints on the disk parameters, in particular the temperature and surface density distribution. We report arcsecond resolution observations of dust and CO line emissions with the IRAM array. The disk properties are derived using a standard disk model. We use the Meudon PDR code to study the chemistry. The two disks share some common properties. The mean CO abundance is low despite disk temperatures above the CO condensation temperature. Furthermore, the CO surface density and dust opacity have different radial dependence. The CQ Tau disk appears warmer, and perhaps less dense than that of MWC 758. Modeling the chemistry, we find that photodissociation of CO is a viable mechanism to explain the low abundance. The photospheric flux is not sufficient for this: a strong UV excess is required. In CQ Tau, the high temperature is consistent with expectation for a PDR. The PDR model has difficulty explaining the mild temperatures obtained in MWC 758, for which a low gas-to-dust ratio is preferred. A yet unexplored alternative could be that, despite currently high gas temperatures, CO remains trapped in grains, as the models suggest that large grains can be cold enough to prevent thermal desorption of CO. The low inclination of the CQ Tau disk, ~30^\circ, challenges previous interpretations given for the UX Ori - like luminosity variations of this star. We conclude that CO cannot be used as a simple tracer of gas-to-dust ratio, the CO abundance being affected by photodissociation, and grain growth.
description: Accepted for publication in Astronomy & Astrophysics
Accretion onto black holes inside neutron stars with piecewise-polytropic equations of state: analytic and numerical treatments
Creators: name: Schnauck, Sophia C.
name: Baumgarte, Thomas W.
name: Shapiro, Stuart L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider spherically symmetric accretion onto a small, possibly primordial, black hole residing at the center of a neutron star governed by a cold nuclear equation of state (EOS). We generalize the relativistic Bondi solution for such EOSs, approximated by piecewise polytropes, and thereby obtain analytical expressions for the steady-state matter profiles and accretion rates. We compare these rates with those found by time-dependent, general relativistic hydrodynamical simulations upon relaxation and find excellent agreement. We consider several different candidate EOSs, neutron star masses and central densities and find that the accretion rates vary only little, resulting in an accretion rate that depends primarily on the black hole mass, and only weakly on the properties of the neutron star.
description: 10 pages, 3 figures; version accepted for publication in Phys. Rev. D
Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases
Creators: name: Widera, Artur
name: Trotzky, Stefan
name: Cheinet, Patrick
name: Fölling, Simon
name: Gerbier, Fabrice
name: Bloch, Immanuel
name: Gritsev, Vladimir
name: Lukin, Mikhail D.
name: Demler, Eugene
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on the observation of the phase dynamics of interacting one-dimensional ultracold bosonic gases with two internal degrees of freedom. By controlling the non-linear atomic interactions close to a Feshbach resonance we are able to induce a phase diffusive many-body spin dynamics. We monitor this dynamical evolution by Ramsey interferometry, supplemented by a novel, many-body echo technique. We find that the time evolution of the system is well described by a Luttinger liquid initially prepared in a multimode squeezed state. Our approach allows us to probe the non-equilibrium evolution of one-dimensional many-body quantum systems.
description: 4 pages, 3 figures Updated version, minor changes
Physics-informed graph neural Galerkin networks: A unified framework for solving PDE-governed forward and inverse problems
Creators: name: Gao, Han
name: Zahr, Matthew J.
name: Wang, Jian-Xun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: Despite the great promise of the physics-informed neural networks (PINNs) in solving forward and inverse problems, several technical challenges are present as roadblocks for more complex and realistic applications. First, most existing PINNs are based on point-wise formulation with fully-connected networks to learn continuous functions, which suffer from poor scalability and hard boundary enforcement. Second, the infinite search space over-complicates the non-convex optimization for network training. Third, although the convolutional neural network (CNN)-based discrete learning can significantly improve training efficiency, CNNs struggle to handle irregular geometries with unstructured meshes. To properly address these challenges, we present a novel discrete PINN framework based on graph convolutional network (GCN) and variational structure of PDE to solve forward and inverse partial differential equations (PDEs) in a unified manner. The use of a piecewise polynomial basis can reduce the dimension of search space and facilitate training and convergence. Without the need of tuning penalty parameters in classic PINNs, the proposed method can strictly impose boundary conditions and assimilate sparse data in both forward and inverse settings. The flexibility of GCNs is leveraged for irregular geometries with unstructured meshes. The effectiveness and merit of the proposed method are demonstrated over a variety of forward and inverse computational mechanics problems governed by both linear and nonlinear PDEs.
description: 27 pages, 10 figures
Agent-Supervisor Coordination for Decentralized Event-Triggered Optimization
Creators: name: Srivastava, Priyank
name: Cavraro, Guido
name: Cortes, Jorge
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: This paper proposes decentralized resource-aware coordination schemes for solving network optimization problems defined by objective functions which combine locally evaluable costs with network-wide coupling components. These methods are well suited for a group of supervised agents trying to solve an optimization problem under mild coordination requirements. Each agent has information on its local cost and coordinates with the network supervisor for information about the coupling term of the cost. The proposed approach is feedback-based and asynchronous by design, guarantees anytime feasibility, and ensures the asymptotic convergence of the network state to the desired optimizer. Numerical simulations on a power system example illustrate our results.
description: 6 pages, 1 figure
New Features of Extended Wormhole Solutions in the Scalar Field Gravity Theories
Creators: name: Nandi, Kamal K.
name: Nigmatzyanov, Ilnur
name: Izmailov, Ramil
name: Migranov, Nail G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The present paper reports interesting new features that wormhole solutions in the scalar field gravity theory have. To demonstrate these, we obtain, by using a slightly modified form of the Matos-Nunez algorithm, an extended class of asymptotically flat wormhole solutions belonging to Einstein minimally coupled scalar field theory. Generally, solutions in these theories do not represent traversable wormholes due to the occurrence of curvature singularities. However, the Ellis I solution of the Einstein minimally coupled theory, when Wick rotated, yields Ellis class III solution, the latter representing a singularity-free traversable wormhole. We see that Ellis I and III are not essentially independent solutions. The Wick rotated seed solutions, extended by the algorithm, contain two new parameters a and δ;. The effect of the parameter a on the geodesic motion of test particles reveals some remarkable features. By arguing for Sagnac effect in the extended Wick rotated solution, we find that the parameter a can indeed be interpreted as a rotation parameter of the wormhole. The analyses reported here have wider applicability in that they can very well be adopted in other theories, including in the string theory.
description: 19 pages
Federated Action Recognition on Heterogeneous Embedded Devices
Creators: name: Jain, Pranjal
name: Goenka, Shreyas
name: Bagchi, Saurabh
name: Banerjee, Biplab
name: Chaterji, Somali
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Federated learning allows a large number of devices to jointly learn a model without sharing data. In this work, we enable clients with limited computing power to perform action recognition, a computationally heavy task. We first perform model compression at the central server through knowledge distillation on a large dataset. This allows the model to learn complex features and serves as an initialization for model fine-tuning. The fine-tuning is required because the limited data present in smaller datasets is not adequate for action recognition models to learn complex spatio-temporal features. Because the clients present are often heterogeneous in their computing resources, we use an asynchronous federated optimization and we further show a convergence bound. We compare our approach to two baseline approaches: fine-tuning at the central server (no clients) and fine-tuning using (heterogeneous) clients using synchronous federated averaging. We empirically show on a testbed of heterogeneous embedded devices that we can perform action recognition with comparable accuracy to the two baselines above, while our asynchronous learning strategy reduces the training time by 40%, relative to synchronous learning.
description: 13 pages, 12 figures
Quantile-based hydrological modelling
Creators: name: Tyralis, Hristos
name: Papacharalampous, Georgia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applications (stat.AP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Predictive uncertainty in hydrological modelling is quantified by using post-processing or Bayesian-based methods. The former methods are not straightforward and the latter ones are not distribution-free (i.e. assumptions on the probability distribution of the hydrological model's output are necessary). To alleviate possible limitations related to these specific attributes, in this work we propose the calibration of the hydrological model by using the quantile loss function. By following this methodological approach, one can directly simulate pre-specified quantiles of the predictive distribution of streamflow. As a proof of concept, we apply our method in the frameworks of three hydrological models to 511 river basins in contiguous US. We illustrate the predictive quantiles and show how an honest assessment of the predictive performance of the hydrological models can be made by using proper scoring rules. We believe that our method can help towards advancing the field of hydrological uncertainty.
description: 23 pages, 7 figures
Metamorfosi e peregrinazioni di Io Dalla pittura vascolare alla tragedia, e ritorno
Creators: name: Cataldo, Concetta; Vacca, Rocco Davide
Publisher: name: La Rivista di Engramma
Year: 2021
Subjects: Io
metamorphosis
Aeschylus
Prometheus Bound

description: The iconographic journey of Io and the characters in his mythical story stem from a reflection on the literary and iconographic sources that tell his story. It is possible to hypothesize that the Attic tragedy could have triggered and stimulated an iconographic change of Io, who, originally, is depicted as a heifer, while from about 450 BCE Io changes her connotations turning into a female with bovine horns. As a corollary to the reflections, it seems possible (or evident) that the iconographic evolution affected the character of Argo, too.
Experimental study of the structure of rich premixed 1,3-butadiene/CH4/O2/Ar flame
Creators: name: Gueniche, Hadj-Ali
name: Glaude, Pierre-Alexandre
name: Fournet, René
name: Battin-Leclerc, Frédérique
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The structure of a laminar rich premixed 1,3-C4H6/CH4/O2/Ar flame have been investigated. 1,3-Butadiene, methane, oxygen and argon mole fractions are 0.033; 0.2073; 0.3315, and 0.4280, respectively, for an equivalent ratio of 1.80. The flame has been stabilized on a burner at a pressure of 6.7 kPa (50 Torr). The concentration profiles of stable species were measured by gas chromatography after sampling with a quartz probe. Quantified species included carbon monoxide and dioxide, methane, oxygen, hydrogen, ethane, ethylene, acetylene, propyne, allene, propene, cyclopropane, 1,3-butadiene, butenes, 1-butyne, vinylacetylene, diacetylene, C5 compounds, benzene, and toluene. The temperature was measured thanks to a thermocouple in PtRh (6%)-PtRh (30%) settled inside the enclosure and ranged from 900 K close to the burner up to 2100 K.
description: traduit de Fizika Goreniya I Vzryva, 2006, 42, 89-95
Subjective assessments of career development : an exploratory study
Creators: name: Gilligan, Thomas M.
Publisher: name: University of British Columbia
Year: 2010

description: This exploratory study of career development used a variation of Kelly's (1955) repertory grid methodology to obtain subjective measures of change in levels of positivity toward self and career over the period from adolescence to mid-life. The possibility of significant differences between men and women in the measures obtained provided a secondary focus. A group of ten male and ten female graduate counselling students, aged between 35 and 45 years, assessed the influence of ten periods in their lives on their career development. Each life period was assessed by means of a set of ten bi-polar constructs related to career development. Analysis of the variation between the average construct ratings, with repeated measurements across the ten life periods, showed a significant difference in levels of average positivity toward self and career. Subjects began with relatively low levels of positivity during adolescence and gradually acquired higher levels by mid-life. Men, compared to women, felt more freedom overall; acquired and maintained strong feelings of freedom faster; and overcame relatively low feelings of confidence in their decision-making ability earlier. Specific career counselling intervention strategies were suggested to facilitate the process of becoming more positive about self and career. Possible differences between male and female patterns of career development indicate the risks involved in using exclusively male referenced vocational guidance measures with female clients. The findings and tentative conclusions reached in this exploratory study could be validated by future research in this area.
Exploring Two-Dimensional Empty Space
Creators: name: Geim, A. K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Research on graphene is proving to have more lives than a cat, repeatedly coming back in new incarnations including graphene's recent alter ego, two-dimensional emptiness.
Correspondence between modified gravity and 5D Ricci-flat cosmologies
Creators: name: Atazadeh, K.
name: Darabi, F.
name: Sepangi, H. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the correspondence between two theoretical frameworks for describing dark energy, $f(R)$ gravity and higher-dimensional Space-Time-Matter (STM) or induced-matter theory. We show that the Hubble expansion parameter in $f(R)$ gravity can be associated with a combination of metric functions in STM theory, and consider a specific example whose properties are consistent with late-time acceleration.
description: 9 pages, 2 figures, Revised and accepted for publication in IJMPD
Additional file 1 of Telephone peer recruitment and interviewing during a respondent-driven sampling (RDS) survey: feasibility and field experience from the first phone-based RDS survey among men who have sex with men in Côte d’Ivoire
Creators: name: Inghels, Maxime
name: Kouassi, Arsène Kra
name: Niangoran, Serge
name: Bekelynck, Anne
name: Carillon, Séverine
name: Sika, Lazare
name: Mariatou Koné
name: Danel, Christine
name: Loû, Annabel Desgrées Du
name: Larmarange, Joseph
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1. MSM network size reported by recruitment wave.
Combining Different V1 Brain Model Variants to Improve Robustness to Image Corruptions in CNNs
Creators: name: Baidya, Avinash
name: Dapello, Joel
name: DiCarlo, James J.
name: Marques, Tiago
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: While some convolutional neural networks (CNNs) have surpassed human visual abilities in object classification, they often struggle to recognize objects in images corrupted with different types of common noise patterns, highlighting a major limitation of this family of models. Recently, it has been shown that simulating a primary visual cortex (V1) at the front of CNNs leads to small improvements in robustness to these image perturbations. In this study, we start with the observation that different variants of the V1 model show gains for specific corruption types. We then build a new model using an ensembling technique, which combines multiple individual models with different V1 front-end variants. The model ensemble leverages the strengths of each individual model, leading to significant improvements in robustness across all corruption categories and outperforming the base model by 38% on average. Finally, we show that using distillation, it is possible to partially compress the knowledge in the ensemble model into a single model with a V1 front-end. While the ensembling and distillation techniques used here are hardly biologically-plausible, the results presented here demonstrate that by combining the specific strengths of different neuronal circuits in V1 it is possible to improve the robustness of CNNs for a wide range of perturbations.
description: 15 pages with supplementary material, 3 main figures, 2 supplementary figures, 4 supplementary tables
Testing the nonclassicality of spacetime: what can we learn from Bell-Bose et al.-Marletto-Vedral experiments?
Creators: name: Kent, Adrian
name: Pitalúa-García, Damián
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Bose et al.-Marletto-Vedral (BMV) experiment [S. Bose et al., Phys. Rev. Lett. 119, 240401 (2017); C. Marletto and V. Vedral, Phys. Rev. Lett. 119, 240402 (2017)] aims to prove that spacetime is nonclassical by observing entanglement generated by gravity. However, local hidden variable theories (LHVTs) can simulate the entangled correlations. We propose to extend the entanglement generated by the BMV experiment to distant quantum particles in a Bell experiment. Violating a Bell inequality would rule out LHVTs, providing a stronger proof of the nonclassicality of spacetime than the BMV proposal.
description: A few typos in the text and references corrected. Published version
Real Time Evolution in Quantum Many-Body Systems With Unitary Perturbation Theory
Creators: name: Hackl, A.
name: Kehrein, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We develop a new analytical method for solving real time evolution problems of quantum many-body systems. Our approach is a direct generalization of the well-known canonical perturbation theory for classical systems. Similar to canonical perturbation theory, secular terms are avoided in a systematic expansion and one obtains stable long-time behavior. These general ideas are illustrated by applying them to the spin-boson model and studying its non-equilibrium spin dynamics.
description: Final version as accepted for publication in Phys. Rev. B (4 pages, 3 figures)
Additional file 2 of Telephone peer recruitment and interviewing during a respondent-driven sampling (RDS) survey: feasibility and field experience from the first phone-based RDS survey among men who have sex with men in Côte d’Ivoire
Creators: name: Inghels, Maxime
name: Kouassi, Arsène Kra
name: Niangoran, Serge
name: Bekelynck, Anne
name: Carillon, Séverine
name: Sika, Lazare
name: Mariatou Koné
name: Danel, Christine
name: Loû, Annabel Desgrées Du
name: Larmarange, Joseph
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 2. Distribution by age, education level and reported sexual orientation with and without outlier correction (for values above 100) of the MSM network size.
Motivation and study skills : a developmental counselling approach to the classroom
Creators: name: McDermid, Neil R.
Publisher: name: University of British Columbia
Year: 2010

description: This exploratory study of a developmental counselling curriculum, embedding personal causation conditions (deCharms 1976) into study skill subject material, used a variation of Gage's (1978) Improvement Research model to obtain outcome measures of change in levels of students' locus of control and student study skill progress across a pre-post intervention period. Formative evaluation of the complete program, employing evaluation reports and process indicators, provide a further focus. A rural British Columbian, eighth grade population, together with parents, teachers and instructor, assessed the impact and effectiveness of the curriculum intervention. Analysis of the variation for locus of control, with repeated measures across pre-post intervention period, showed a significant positive change (increase in internal expectancy/decrease in external expectancy). Males, females and classes indicated increased internalityj locus of control. Analysis of the variation for student progress (study skills/habit), with repeated measures across pre-post intervention period, showed a significant positive change in levels of student reported study skill progress. Males and females indicated increased levels of study skill awareness. Classes two through four showed substantially greater increase than class one. Evaluation reports and process indicators showed relatively strong support for the program, indicating practical and educational significance.
Self-propulsion dynamics of small droplets on general surfaces with curvature gradient
Creators: name: Chen, Yujuan
name: Xu, Xianmin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study theoretically the self-propulsion dynamics of a small droplet on general curved surfaces by a variational approach. A new reduced model is derived based on careful computations for the capillary energy and the viscous dissipation in the system. The model describes quantitatively the spontaneous motion of a liquid droplet on general surfaces. In particular, it recovers previous models for droplet motion on the outside surface of a cone. In this case, we derive a scaling law of the displacement $s\sim t^{1/3}$ of a droplet with respect to time $t$ by asymptotic analysis. Theoretical results are in good agreement with experiments in previous literature without adjusting the friction coefficient in the model.
description: 30 pages,15 figures
Fichas de Inventário #ECOS; Fiches d'Inventaire #ECOS; Worksheets #ECOS
Creators: name: Ferreira, Sónia
name: Prista, Marta
Publisher: name: Projeto #ECOS
Year: 2020

description: 25 cartazes com reproduções de objetos, documentos, e testemunhos de antigos exilados portugueses, e materiais pedagógicos realizados por alunos da Escola Artística António Arroio. Estes podem assumir um carácter expositivo (no interior da sala de aula ou noutros espaços escolares), mas também de manuseamento (em papel ou em formato digital) para promoção de debates ou a realização de trabalhos escritos.
Gravitation in Theory of Space-Time Film and Galactic Soliton
Creators: name: Chernitskii, Alexander A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The scalar field of extremal space-time film is considered as unified fundamental field. Metrical interaction between solitons-particles as gravitational interaction is considered here in approximation of a weak fundamental field. It is shown that the signature of metrics $\{-,+,+,+\}$ in the model formulation provides the observable gravitational attraction to a region with bigger energy density of the fundamental field. The induced gravitational interaction in the space-time film theory is applied to stars in a galaxy. The conception of galaxy soliton of space-time film is introduced. A weak field asymptotic solution for a galaxy soliton is proposed. It is shown that the effective metrics for this solution can provide the observable velocity curves for galaxies and explains their spiral structure. Thus a solution for so-called dark matter problem in the framework of space-time film theory is proposed.
description: 6 pages, paper for proceedings of International Meeting "Physical Interpretation of Relativity Theory", PIRT-2021, 5 July - 9 July 2021, Moscow
Building Portable Thread Schedulers for Hierarchical Multiprocessors: the BubbleSched Framework
Creators: name: Thibault, Samuel
name: Namyst, Raymond
name: Wacrenier, Pierre-André
Publisher: name: arXiv
Year: 2007
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Exploiting full computational power of current more and more hierarchical multiprocessor machines requires a very careful distribution of threads and data among the underlying non-uniform architecture. Unfortunately, most operating systems only provide a poor scheduling API that does not allow applications to transmit valuable scheduling hints to the system. In a previous paper, we showed that using a bubble-based thread scheduler can significantly improve applications' performance in a portable way. However, since multithreaded applications have various scheduling requirements, there is no universal scheduler that could meet all these needs. In this paper, we present a framework that allows scheduling experts to implement and experiment with customized thread schedulers. It provides a powerful API for dynamically distributing bubbles among the machine in a high-level, portable, and efficient way. Several examples show how experts can then develop, debug and tune their own portable bubble schedulers.
AC-LoRA: Auto Component LoRA for Personalized Artistic Style Image Generation
Creators: name: Cui, Zhipu
name: Tian, Andong
name: Ying, Zhi
name: Lu, Jialiang
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2.6; I.4.0
subject: 68T05, 68U10

description: Personalized image generation allows users to preserve styles or subjects of a provided small set of images for further image generation. With the advancement in large text-to-image models, many techniques have been developed to efficiently fine-tune those models for personalization, such as Low Rank Adaptation (LoRA). However, LoRA-based methods often face the challenge of adjusting the rank parameter to achieve satisfactory results. To address this challenge, AutoComponent-LoRA (AC-LoRA) is proposed, which is able to automatically separate the signal component and noise component of the LoRA matrices for fast and efficient personalized artistic style image generation. This method is based on Singular Value Decomposition (SVD) and dynamic heuristics to update the hyperparameters during training. Superior performance over existing methods in overcoming model underfitting or overfitting problems is demonstrated. The results were validated using FID, CLIP, DINO, and ImageReward, achieving an average of 9% improvement.
description: 11 pages, 4 figures, ICCGV 2025, SPIE
title: Prevalence of Sexuality Implicit Bias in Entry-Level Dental Hygiene Students – A Pilot Study
Creators: name: Drew, Monica Mercedez
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2024

description: urpose: Bias and discrimination may create barriers and affect the delivery of culturally competent care to sexual minorities. An awareness of biases early in education may promote equitable care and increase the quality of oral healthcare delivered to diverse populations. The purpose of this study was to determine the prevalence of sexuality-implicit attitudes in entry-level dental hygiene students at one university. Methods: This cross-sectional study included a convenience sample of junior and senior dental hygiene students (n=74) and was determined exempt by a university Health Sciences Human Subjects Review Committee (2151633-2). The Implicit Associations Test (IAT) is a validated tool used to measure implicit bias. For this pilot study, the validated Sexuality IAT was modified for use in dentistry with permission from Project Implicit®. The IAT requires participants to rapidly pair two social groups, in this case, homosexual and heterosexual individuals, with either positive or negative attributes (words/concepts), using the “E” and “I” computer keyboard keys. Faster average response times to pairings indicate a preference for a group. Descriptive statistics were used to evaluate the means between groups and determine the prevalence of sexuality implicit biases. Independent samples t-test was utilized to examine for statistically significant differences (p < 0.05) in the level of implicit bias based on the year in the dental hygiene program (1st or 2nd). One way between subjects ANOVA was used to examine for differences in age groups (p < 0.05). Results: Seventy dental hygiene students (n=70) completed the survey, (n=34 1st year, n=36 2nd year).The average overall implicit score for first-year students was 0.001 (no sexuality preference), and 0.069 for second-year students (no sexuality preference). When comparing year in dental hygiene program and age groups, no statistically significant differences were found. Conclusion: Undergraduate dental hygiene students had no sexuality bias for heterosexual or homosexual individuals. More research is needed on a larger sample to determine awareness. Additionally, the use of interventions that aim to mitigate biases towards LGBTQ+ individuals.
Singular value decomposition of large random matrices (for two-way classification of microarrays)
Creators: name: Bolla, Marianna
name: Friedl, Katalin
name: Kramli, Andras
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 15A42; 15A52; 60E15

description: Asymptotic behavior of the singular value decomposition (SVD) of blown up matrices and normalized blown up contingency tables exposed to Wigner-noise is investigated.It is proved that such an m\times n matrix almost surely has a constant number of large singular values (of order \sqrt{mn}), while the rest of the singular values are of order \sqrt{m+n} as m,n\to\infty. Concentration results of Alon et al. for the eigenvalues of large symmetric random matrices are adapted to the rectangular case, and on this basis, almost sure results for the singular values as well as for the corresponding isotropic subspaces are proved. An algorithm, applicable to two-way classification of microarrays, is also given that finds the underlying block structure.
description: to be submitted to a special ussue of JMVA
Observation of the Purcell effect in high-index-contrast micropillar
Creators: name: Bennett, A. J.
name: Ellis, D. J. P.
name: Shields, A. J.
name: Atkinson, P.
name: Farrer, I.
name: Ritchie, D. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have fabricated pillar microcavity samples with Bragg mirrors consisting of alternate layers of GaAs and Aluminium Oxide. Compared to the more widely studied GaAs/AlAs micropillars these mirrors can achieve higher reflectivities with fewer layer repeats and reduce the mode volume. We have studied a number of samples containing a low density of InGaAs/GaAs self assembled quantum dots in a cavity and here report observation of a three fold enhancement in the radiative lifetime of a quantum dot exciton state due to the Purcell effect.
Additional file 1 of Life-conditions and anthropometric variables as risk factors for oral health in children in Ladakh, a cross-sectional survey
Creators: name: Cagetti, Maria Grazia
name: Cocco, Fabio
name: Calzavara, Ezio
name: Augello, Davide
name: Phunchok Zangpoo
name: Campus, Guglielmo
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1. Questionnaire.
N=8 superfield formulation of the Bagger-Lambert-Gustavsson model
Creators: name: Cederwall, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We reformulate the Bagger-Lambert-Gustavsson model using an N=8 superspace, thus making the full supersymmetry manifest. The formulation is based on appropriate "pure spinor wave functions" for the Chern-Simons and matter multiplets. The Lagrangian has an extremely simple structure, essentially containing a Chern-Simons-like term for the gauge field wave function and a minimally coupled matter wave function. No higher order interactions than cubic are present. The consistency of the setup relies on an interplay between the algebraic structures of the 3-algebra and of the pure spinors.
description: 9 pp., plain tex. v2: references added
Gravitational memory effects in Chern-Simons modified gravity
Creators: name: Hou, Shaoqi
name: Zhu, Tao
name: Zhu, Zong-Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The gravitational memory effects of Chern-Simons modified gravity are considered in the asymptotically flat spacetime. If the Chern-Simons scalar does not directly couple with the ordinary matter fields, there are also displacement, spin and center-of-mass memory effects as in general relativity. This is because the term of the action that violates the parity invariance is linear in the scalar field but quadratic in the curvature tensor. This results in the parity violation occuring at the higher orders in the inverse luminosity radius. The scalar field does not induce any new memory effects that can be detected by interferometers or pulsar timing arrays. The asymptotic symmetry is group is also the extended Bondi-Metzner-Sachs group. The constraints on the memory effects excited by the tensor modes are obtained.
description: 13 pages, 0 figure. To be published in PRD
Additional file 2 of Life-conditions and anthropometric variables as risk factors for oral health in children in Ladakh, a cross-sectional survey
Creators: name: Cagetti, Maria Grazia
name: Cocco, Fabio
name: Calzavara, Ezio
name: Augello, Davide
name: Phunchok Zangpoo
name: Campus, Guglielmo
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 2. STROBE Checklist.
Common environmental effects on quantum thermal transistor
Creators: name: Liu, Yu-qiang
name: Yu, Deng-hui
name: Yu, Chang-shui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum thermal transistor is a microscopic thermodynamical device that can modulate and amplify heat current through two terminals by the weak heat current at the third terminal. Here we study the common environmental effects on a quantum thermal transistor made up of three strong-coupling qubits. It is shown that the functions of the thermal transistor can be maintained and the amplification rate can be modestly enhanced by the skillfully designed common environments. In particular,the presence of a dark state in the case of the completely correlated transitions can provide an additional external channel to control the heat currents without any disturbance of the amplification rate. These results show that common environment effect can offer new insight on improving the performance of quantum thermal devices.
description: 14 pages, 9 figures
Boundaries of Siegel disks - numerical studies of their dynamics and regularity
Creators: name: de la Llave, Rafael
name: Petrov, Nikola P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 37E20; 30D05

description: Siegel disks are domains around fixed points of holomorphic maps in which the maps are locally linearizable (i.e., become a rotation under an appropriate change of coordinates which is analytic in a neighborhood of the origin). The dynamical behavior of the iterates of the map on the boundary of the Siegel disk exhibits strong scaling properties which have been intensively studied in the physical and mathematical literature. In the cases we study, the boundary of the Siegel disk is a Jordan curve containing a critical point of the map (we consider critical maps of different orders), and there exists a natural parameterization which transforms the dynamics on the boundary into a rotation. We compute numerically this parameterization and use methods of harmonic analysis to compute the global Holder regularity of the parameterization for different maps and rotation numbers. We obtain that the regularity of the boundaries and the scaling exponents are universal numbers in the sense of renormalization theory (i.e., they do not depend on the map when the map ranges in an open set), and only depend on the order of the critical point of the map in the boundary of the Siegel disk and the tail of the continued function expansion of the rotation number. We also discuss some possible relations between the regularity of the parameterization of the boundaries and the corresponding scaling exponents.
description: 12 pages, 13 figures
How complex is the quantum motion?
Creators: name: Benenti, Giuliano
name: Casati, Giulio
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In classical mechanics the complexity of a dynamical system is characterized by the rate of local exponential instability which effaces the memory of initial conditions and leads to practical irreversibility. In striking contrast, quantum mechanics appears to exhibit strong memory of the initial state. Here we introduce a notion of complexity for a quantum system and relate it to its stability and reversibility properties.
description: 4 pages, 3 figures, new figure added
Adolescents’ career aspirations and expectations : the influence of gender, grade, and locus of control
Creators: name: McNulty, William Brian
Publisher: name: University of British Columbia
Year: 2010

description: This study explored the agreement in occupational field between adolescents' career aspirations and career expectations and the influence of gender, grade, and locus of control on this agreement. In addition, the reasons for occupational choice with regard to career aspiration and career expectation were examined. An examination of the literature revealed little current research on the relationship between career aspirations and expectations when examined together or on the various factors which influence adolescent career choice. The literature does indicate that, when considering specific factors, career choice was positively related to grade and gender. However, despite the importance of psychological constructs in career choice, relatively little research on the relationship between locus of control and career choice has been published to date. In this study, it was hypothesized that there would be a difference between the field of subjects' ideal occupational choices and real occupational choices regardless of gender, grade, or locus of control, and that there would be a difference in the subjects' reasons for ideal occupational choices and real occupational choices regardless of gender, grade, or locus of control. The study was conducted with 500 randomly selected grade eight to twelve students attending a secondary school chosen by the Superintendent of the cooperating school district in the Lower Mainland of British Columbia. All the subjects, except those in grade nine, were taking some form of a career education program. The results of the study supported the research hypotheses and indicated that there was little agreement in occupational field between career aspiration and expectation, and that there was no grade, gender, or locus of control influence. Similarly, there was no differences between the reasons for ideal and real occupational choices. It was found, however, that reasons for occupational choice varied across grades. The results of the study have implications for both counsellor and career guidance programs at the secondary school level.
title: The Effects of the Conflict in Ukraine on the Human Rights Situation Within the European Union
Creators: name: Bílková, Veronika
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2023
Subjects: subject: armed conflict
subject: European Union
subject: human rights
subject: refugees
subject: Ukraine
subject: vulnerable groups

description: European Papers - A Journal on Law and Integration, 2023 8(3), 1037-1045
description: I. Introduction - II. Protection of war refugees from Ukraine - III. Targeted sanctions against citizens of the Russian federation and of Belarus - IV. Human rights of the general population of the EU Member States - V. Concluding remarks.
description: The conflict in Ukraine, triggered by the Russia’s act of aggression in March 2014 and, in full scale, in February 2022, has had a profound impact on the human rights situation not only in Ukraine itself but also in the Member States of the European Union. This impact manifests itself in three main areas. The first area concerns the protection of war refugees from Ukraine. The second area pertains to the sanctions imposed on the citizens of the Russian Federation and of Belarus. The third area relates to the effects of the conflict on human rights of the general population of the EU Member States, stemming either from the economic or social hardship brought about by the conflict, or from restrictive measures adopted by the EU Member States in response to the conflict. In addition to introducing each of these areas in more detail, the Insight recalls that not paying adequate attention to all of them simultaneously might result in violations of human rights and in the radicalisation of certain segments of society that might feel (rightly or not) ignored and left behind.