cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-wavelength characterisation of z~2 clustered, dusty star forming galaxies discovered by Planck
Creators: name: Flores-Cacho, I.
name: Pierini, D.
name: Soucail, G.
name: Montier, L.
name: Dole, H.
name: Pointecouteau, E.
name: Pello, R.
name: Floch, E. Le
name: Nesvadba, N.
name: Lagache, G.
name: Guery, D.
name: Canameras, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (abridged) We report the discovery of PHz G95.5-61.6, a complex structure detected in emission in the Planck all-sky survey that corresponds to two over-densities of high-redshift galaxies. This is the first source from the Planck catalogue of high-z candidates that has been completely characterised with follow-up observations from the optical to the sub-millimetre domain. Herschel/SPIRE observations at 250, 350 and 500 microns reveal the existence of five sources producing a 500 microns emission excess that spatially corresponds to the candidate proto-clusters discovered by Planck. Further observations at CFHT in the optical bands (g and i) and in the near infrared (J, H and K_s), plus mid infrared observations with IRAC/Spitzer (at 3.6 and 4.5 microns) confirm that the sub-mm red excess is associated with an over-density of colour-selected galaxies. Follow-up spectroscopy of 13 galaxies with VLT/X-Shooter establishes the existence of two high-z structures: one at z~1.7 (three confirmed member galaxies), the other at z~2.0 (six confirmed members). This double structure is also seen in the photometric redshift analysis of a sample of 127 galaxies located inside a circular region of 1'-radius containing the five Herschel/SPIRE sources, where we found a double-peaked excess of galaxies at z~1.7 and z~2.0 with respect to the surrounding region. These results suggest that PHz G95.5-61.6 corresponds to two accreting nodes, not physically linked to one another, embedded in the large scale structure of the Universe at z~2 and along the same line-of-sight. In conclusion, the data, methods and results illustrated in this pilot project confirm that Planck data can be used to detect the emission from clustered, dusty star forming galaxies at high-z, and, thus, to pierce through the early growth of cluster-scale structures.
description: 15 pages, 13 figures. Accepted for publication in Astronomy and Astrophysics
Throughput Analysis of Massive MIMO Uplink with Low-Resolution ADCs
Creators: name: Jacobsson, Sven
name: Durisi, Giuseppe
name: Coldrey, Mikael
name: Gustavsson, Ulf
name: Studer, Christoph
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We investigate the uplink throughput achievable by a multiple-user (MU) massive multiple-input multiple-output (MIMO) system in which the base station is equipped with a large number of low-resolution analog-to-digital converters (ADCs). Our focus is on the case where neither the transmitter nor the receiver have any a priori channel state information. This implies that the fading realizations have to be learned through pilot transmission followed by channel estimation at the receiver, based on coarsely quantized observations. We propose a novel channel estimator, based on Bussgang's decomposition, and a novel approximation to the rate achievable with finite-resolution ADCs, both for the case of finite-cardinality constellations and of Gaussian inputs, that is accurate for a broad range of system parameters. Through numerical results, we illustrate that, for the 1-bit quantized case, pilot-based channel estimation together with maximal-ratio combing or zero-forcing detection enables reliable multi-user communication with high-order constellations in spite of the severe nonlinearity introduced by the ADCs. Furthermore, we show that the rate achievable in the infinite-resolution (no quantization) case can be approached using ADCs with only a few bits of resolution. We finally investigate the robustness of low-ADC-resolution MU-MIMO uplink against receive power imbalances between the different users, caused for example by imperfect power control.
A Bayesian spatiotemporal model for reconstructing climate from multiple pollen records
Creators: name: Holmström, Lasse
name: Ilvonen, Liisa
name: Seppä, Heikki
name: Veski, Siim
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Holocene (the last 12,000 years) temperature variation, including the transition out of the last Ice Age to a warmer climate, is reconstructed at multiple locations in southern Finland, Sweden and Estonia based on pollen fossil data from lake sediment cores. A novel Bayesian statistical approach is proposed that allows the reconstructed temperature histories to interact through shared environmental response parameters and spatial dependence. The prior distribution for past temperatures is partially based on numerical climate simulation. The features in the reconstructions are consistent with the quantitative climate reconstructions based on more commonly used reconstruction techniques. The results suggest that the novel spatio-temporal approach can provide quantitative reconstructions that are smoother, less uncertain and generally more realistic than the site-specific individual reconstructions.
description: Published at http://dx.doi.org/10.1214/15-AOAS832 in the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Blocking the RNA Interference Pathway Improves Oncolytic Virus Therapy
Creators: name: Aitken, Amelia
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Cancer
Oncolytic virus
RNA
microRNA
RNAi
RNA silencing
Cancer therapy
Dicer

description: Oncolytic viruses are novel candidates for cancer therapy and their efficacy relies on their capacity to overcome the host’s anti-viral barriers. In mammalian cells, the anti-viral response involves a protein-signaling cascade known as the interferon pathway, which alerts the immune system and limits the propagation of infection. Given that most cancer cells have defects in this pathway, they are susceptible to viral infection and responsive to oncolytic virotherapy. For reasons that remain unknown, many cancers are still refractory to oncolytic viruses, which suggests the existence of additional antiviral mechanisms. In this study, we investigate the potential involvement of an alternative antiviral pathway in cancer cells. Given that insects and plants rely on the RNA silencing pathway for their anti-viral protection, we investigated the presence of a similar mechanism in cancer cells. We found viral genome-derived small RNAs in various cancer cell lines upon infection, which is indicative of an RNA-mediated antiviral response. Also, various viruses encode suppressors of the RNA interference pathway. To determine if an oncolytic virus could benefit from such a factor, we engineered an oncolytic virus variant to encode the Nodamura virus B2 protein, a known inhibitor of RNA silencing-mediated immune responses. Using this virus, we observed enhanced cytotoxicity in 33 out of the 38 human cancer cell lines tested. Furthermore, our results show inhibition of viral genome cleavage and altered microRNA processing by our B2-expressing oncolytic virus. Taken together, our data suggests the blockade of RNA silencing antiviral pathways and/or antiviral microRNA processing improves the efficacy of our B2-encoding virus in a cell-line specific manner. Overall, our results establish the improved potential of our novel virus therapy and demonstrate for the first time the involvement of RNA pathways in the antiviral defense of cancer cells.
A Comparison of Computational Models for the Extracellular Potential of Neurons
Creators: name: Pods, Jurgis
Publisher: name: arXiv
Year: 2015
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: I.6.4
subject: 92C20

description: The extracellular space has an ambiguous role in neuroscience. It is present in every physiologically relevant system and often used as a measurement site in experimental recordings, but it has received subordinate attention compared to the intracellular domain. In computational modeling, it is often regarded as a passive, homogeneous resistive medium with a constant conductivity, which greatly simplifies the computation of extracellular potentials. However, recent studies have shown that local ionic diffusion and capacitive effects of electrically active membranes can have a substantial impact on the extracellular potential. These effects can not be described by traditional models, and they have been subject to theoretical and experimental analyses. We strive to give an overview over recent progress in modeling the extracellular space with special regard towards the concentration and potential dynamics on different temporal and spatial scales. Three models with distinct assumptions and levels of detail are compared both theoretically and by means of numerical simulations: the classical volume conductor (VC) model, which is most frequently used in form of the line source approximation (LSA); the very detailed, but computationally intensive Poisson-Nernst-Planck model of electrodiffusion (PNP); and an intermediate one called the electroneutral model (EN). The results clearly show that there is no one model for all applications, as they show significantly different responses especially close to neuronal membranes. Finally, we list some common use cases for model simulations and give recommendations on which model to use in each situation.
description: 12 pages (incl. references), 4 figures (color)
On the Segregation of Dark Matter Substructure
Creators: name: Bosch, Frank C. van den
name: Jiang, Fangzhou
name: Campbell, Duncan
name: Behroozi, Peter
Publisher: name: arXiv
Year: 2015
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the first comprehensive analysis of the segregation of dark matter subhaloes in their host haloes. Using numerical simulations, we examine the segregation of twelve different subhalo properties with respect to both orbital energy and halo-centric radius (in real space as well as in projection). Subhaloes are strongly segregated by accretion redshift, which is an outcome of the inside-out assembly of their host haloes. Since subhaloes that were accreted earlier have experienced more tidal stripping, subhaloes that have lost a larger fraction of their mass at infall are on more bound orbits. Subhaloes are also strongly segregated in their masses and maximum circular velocities at accretion. We demonstrate that part of this segregation is already imprinted in the infall conditions. For massive subhaloes it is subsequently boosted by dynamical friction, but only during their first radial orbit. The impact of these two effects is counterbalanced, though, by the fact that subhaloes with larger accretion masses are accreted later. Because of tidal stripping, subhaloes reveal little to no segregation by present-day mass or maximum circular velocity, while the corresponding torques cause subhaloes on more bound orbits to have smaller spin. There is a weak tendency for subhaloes that formed earlier to be segregated towards the center of their host halo, which is an indirect consequence of the fact that (sub)halo formation time is correlated with other, strongly segregated properties. We discuss the implications of our results for the segregation of satellite galaxies in galaxy groups and clusters.
description: 21 pages, 13 figures, accepted for publication in MNRAS
Nonmodal Analysis of Temporal Transverse Shear Instabilities in Shallow Flows
Creators: name: Tun, Yarzar
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2017
Subjects: Shallow flows
Hydrodynamic stability
Linear stability analysis
Nonmodal stability analysis
Pseudospectra

description: Shallow flows are those whose width is significantly larger than their depth. In these types of flows, two dimensional coherent structures can be generated and can influence the flow greatly by the lateral transfer of mass and momentum. The development of coherent structures as a result of flow instabilities has been a topic of interest for environmental fluid mechanics for decades. Studies on the use of linear modal stability analysis is commonly found in literature. However, the relatively recent development in the field of hydrodynamic stability suggests that the traditional linear modal stability analysis does not describe the behaviour of the perturbations in finite time. The discrepancy between asymptotic behaviour and finite time behaviour is particularly large in shear driven flows and it is most likely to be the case for shallow flows. This study aims to provide a better understanding of finite time growth of perturbation energy in shallow flows. The three cases of shallow flows evaluated are the mixing layer, jet and wake. The critical cases are obtained through the linear modal analysis and nonmodal analysis was conducted to show the transient behaviour in finite time for what is so-called marginally stable. Finally, the thesis concludes by generalizing the finite time energy growth in the S-k space.
Computing sets of graded attribute implications with witnessed non-redundancy
Creators: name: Vychodil, Vilem
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: H.2.8; H.3.3
subject: 68P20, 68T30, 03B52

description: In this paper we extend our previous results on sets of graded attribute implications with witnessed non-redundancy. We assume finite residuated lattices as structures of truth degrees and use arbitrary idempotent truth-stressing linguistic hedges as parameters which influence the semantics of graded attribute implications. In this setting, we introduce algorithm which transforms any set of graded attribute implications into an equivalent non-redundant set of graded attribute implications with saturated consequents whose non-redundancy is witnessed by antecedents of the formulas. As a consequence, we solve the open problem regarding the existence of general systems of pseudo-intents which appear in formal concept analysis of object-attribute data with graded attributes and linguistic hedges. Furthermore, we show a polynomial-time procedure for determining bases given by general systems of pseudo-intents from sets of graded attribute implications which are complete in data.
Os novos públicos da rádio – relato de um projeto de uma webradio para surdos
Creators: name: Silva, Ana Catarina
name: Coelho, Carina Martinho
name: Cabedo, Francisc
name: Sousa, Maria
name: Bonixe, Luís
Publisher: name: Aprender
Year: 2013

description: A rádio está a viver um processo de várias transformações decorrentes da sua migração para os meios digitais, permitindo-lhe adquirir novas funcionalidades. Por outro lado, os meios de comunicação social jornalísticos têm na sua génese uma responsabilidade social de inclusão dos vários públicos e comunidades existentes na sociedade. É com base nestes dois pressupostos que surge a Rádio Mãos à Conversa. Trata-se de um projeto jornalístico destinado à comunidade surda e que, utilizando a linguagem e o estilo radiofónico, tem a particularidade de todos os conteúdos disponíveis serem traduzidos para Língua Gestual Portuguesa.
description: Aprender, Revista Aprender nº 34 (outubro de 2013)
title: Легкая атлетика как раздел физической культуры в педагогических вузах
title: Учебное пособие для студентов
titleType: Subtitle
Creators: name: Марданов А.Х.
name:  Мутаева И.Ш.
name:  Коновалов И.Е.
name:  Селиверстова Н.Н.
Publisher: name: Набережночелнинский государственный педагогический университет
Year: 2011

description: Учебное пособие предназначено студентам педагогических вузов, и составлено на основании требований Государственного образовательного стандарта высшего профессионального образования второго поколения по дисциплине «Физическая культура». В работе рассматриваются техника и методика обучения видам легкой атлетики, которые входят в учебную дисциплину «Физическая культура»; здесь впервые представлена разработанная авторами система письменных заданий для студентов, показаны типичные ошибки при изучении техники видов легкоатлетических упражнений. Пособие может быть использовано студентами, а также учителями физкультуры в разных учебных заведениях.
description: The manual is intended for students of pedagogical universities, and based on the requirements of State educational standard of higher professional education of the second generation in the discipline "Physical culture". The paper discusses the technique and methodology of training types of athletics that are included in the school discipline "Physical culture"; presented here for the first time the authors developed the system of writing tasks for students are shown typical errors in the study of technology types of athletic exercises. The manual can be used by students and teachers of physical education in different educational institutions.
title: Основы технического нормирования и стандартизации
title: Пособие
titleType: Subtitle
Creators: name: Сыцко В.Е.
name:  Целикова Л.В.
name:  Локтева К.И.
name:  Прокофьева И.Н.
Publisher: name: Республиканский институт профессионального образования (РИПО)
Year: 2015

description: В книге изложены вопросы, связанные с сущностью технического нормирования и стандартизации, представлена законодательная и нормативная база в данной области, даны основы метрологии. Данное пособие адресовано учащимся учреждений, обеспечивающих получение среднего специального образования по специальности «Коммерческая деятельность (товароведение)», а также студентам экономических, учетно-финансовых, товароведческих специальностей вузов, аспирантам, преподавателям, специалистам промышленных и торговых предприятий, центров бизнес-образования.
description: The book presents the issues related to the nature of technical regulation and standardization submitted to the legislative and regulatory framework in this area, the fundamentals of Metrology. This Handbook is addressed to students of institutions providing secondary specialized education on the specialty "Commercial activities (commodity research)", as well as students of economic, accounting and Finance, merchandising students, graduate students, teachers, specialists of industrial and commercial enterprises, centres of business education.
Measuring economic complexity of countries and products: which metric to use?
Creators: name: Mariani, Manuel Sebastian
name: Vidmer, Alexandre
name: Medo, Matus
name: Zhang, Yi-Cheng
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Evaluating the economies of countries and their relations with products in the global market is a central problem in economics, with far-reaching implications to our theoretical understanding of the international trade as well as to practical applications, such as policy making and financial investment planning. The recent Economic Complexity approach aims to quantify the competitiveness of countries and the quality of the exported products based on the empirical observation that the most competitive countries have diversified exports, whereas developing countries only export few low quality products -- typically those exported by many other countries. Two different metrics, Fitness-Complexity and the Method of Reflections, have been proposed to measure country and product score in the Economic Complexity framework. We use international trade data and a recent ranking evaluation measure to quantitatively compare the ability of the two metrics to rank countries and products according to their importance in the network. The results show that the Fitness-Complexity metric outperforms the Method of Reflections in both the ranking of products and the ranking of countries. We also investigate a Generalization of the Fitness-Complexity metric and show that it can produce improved rankings provided that the input data are reliable.
In-hospital individualized prescriptive exercise intervention for acute leukemia patients undergoing chemotherapy
Creators: name: Gregory, Bradley Barnes
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: Exercise intervention studies among leukemia patients have previously been very limited. Therefore, the purpose of the study was to examine the effects of an individualized prescriptive exercise intervention, administered in-hospital during the treatment-recovery of leukemia patients, on fitness parameters and quality of life. Five patient volunteers were recruited for the subject, and four successfully completed the six-week training protocol, which consisted of aerobic activity between 40-60% of heart rate reserve, endurance-based resistance training, and flexibility training. Physiological and psychological parameters were assessed within three days of the induction phase of chemotherapy, and again at the end of the fourth week of recovery. Non-significant differences were observed for every variable, leading researchers to believe all parameters were maintained throughout the six-week exercise training protocol. The results of this study demonstrate that an exercise program, consisting of aerobic training, resistance training, and flexibility training, enables acute leukemia patients to maintain physiology and quality of life while undergoing chemotherapy.
Measuring correlations in non-separable vector beams using projective measurements
Creators: name: Subramanian, Keerthan
name: Viswanathan, Nirmal K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Doubts regarding the completeness of quantum mechanics as raised by Einstein, Podolsky and Rosen(EPR) have predominantly been resolved by resorting to a measurement of correlations between entangled photons which clearly demonstrate violation of Bell's inequality. This article is an attempt to reconcile incompatibility of hidden variable theories with reality by demonstrating experimentally a violation of Bell's inequality in locally correlated systems whose two degrees of freedom, the spin and orbital angular momentum, are maximally correlated. To this end we propose and demonstrate a linear, achromatic modified Sagnac interferometer to project orbital angular momentum states which we combine with spin projections to measure correlations.
description: 18 pages, 6 figures
Revisitando os clássicos: Os contributos de Maslow, Freud, Erikson e Piaget para a compreensão do Fenómeno de Boom, na adesão de adultos ao Sistema Nacional de RVCC
Creators: name: Ferreira, Isabel Silva
name: Morais, Joana Roque
Publisher: name: Aprender
Year: 2013

description: Este artigo apresenta algumas reflexões sobre a necessidade de compreender o Fenómeno de Boom, na adesão de adultos ao Sistema Nacional de RVCC, à luz de autores que marcaram a história da psicologia, como Piaget, Erikson, Freud e Maslow.
description: Aprender, Revista Aprender nº 34 (outubro de 2013)
On the codes over the Z_3+vZ_3+v^2Z_3
Creators: name: Dertli, Abdullah
name: Cengellenmis, Yasein
name: Eren, Senol
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In this paper, we study the structure of cyclic, quasi-cyclic, constacyclic codes and their skew codes over the finite ring R=Z_3+vZ_3+v^2Z_3, v^3=v. The Gray images of cyclic, quasi-cyclic, skew cyclic, skew quasi-cyclic and skew constacyclic codes over R are obtained. A necessary and sufficient condition for cyclic (negacyclic) codes over R that contains its dual has been given. The parameters of quantum error correcting codes are obtained from both cyclic and negacyclic codes over R. It is given some examples. Firstly, quasi-constacyclic and skew quasi-constacyclic codes are introduced. By giving two product, it is investigated their duality. A sufficient condition for 1-generator skew quasi-constacyclic codes to be free is determined.
Interdisciplinary Business Games on Sustainable Development: Theoretical Foundations and Prospects of Implementation
Creators: name: Bolshakov, Boris
name: Shamaeva, Ekaterina
name: Popov, Eugene
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: The article defines the place of business games among all games in general based on the classification by F.G. Junger; it provides critical analysis of existing business games types; it also formulates requirements and lays theoretical foundations and elements of the methodology and organization of interdisciplinary business games (IBG) on sustainable development as a special type of business games. In addition, it examines the prospects of IBG implementation in higher education for sustainable development, using information technology and computer resources.
description: Report at the XXIII International Scientific Symposium 'Miner's Week - 2015' (MISiS, Moscow, 26-30 January 2015) pp 319-325
Quantile regression for mixed models with an application to examine blood pressure trends in China
Creators: name: Smith, Luke B.
name: Fuentes, Montserrat
name: Gordon-Larsen, Penny
name: Reich, Brian J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Cardiometabolic diseases have substantially increased in China in the past 20 years and blood pressure is a primary modifiable risk factor. Using data from the China Health and Nutrition Survey, we examine blood pressure trends in China from 1991 to 2009, with a concentration on age cohorts and urbanicity. Very large values of blood pressure are of interest, so we model the conditional quantile functions of systolic and diastolic blood pressure. This allows the covariate effects in the middle of the distribution to vary from those in the upper tail, the focal point of our analysis. We join the distributions of systolic and diastolic blood pressure using a copula, which permits the relationships between the covariates and the two responses to share information and enables probabilistic statements about systolic and diastolic blood pressure jointly. Our copula maintains the marginal distributions of the group quantile effects while accounting for within-subject dependence, enabling inference at the population and subject levels. Our population-level regression effects change across quantile level, year and blood pressure type, providing a rich environment for inference. To our knowledge, this is the first quantile function model to explicitly model within-subject autocorrelation and is the first quantile function approach that simultaneously models multivariate conditional response. We find that the association between high blood pressure and living in an urban area has evolved from positive to negative, with the strongest changes occurring in the upper tail. The increase in urbanization over the last twenty years coupled with the transition from the positive association between urbanization and blood pressure in earlier years to a more uniform association with urbanization suggests increasing blood pressure over time throughout China, even in less urbanized areas. Our methods are available in the R package BSquare.
description: Published at http://dx.doi.org/10.1214/15-AOAS841 in the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Differences in patterns of motor variability in chronic low back pain compared to healthy individuals during functional tasks: A systematic scoping review
Creators: name: Dijk, Lars
name: Lamoth, C.J.C.
name: Reneman, M.F.
name: Leving, M.T.
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medical Sciences
subject: Kinesiology
subject: Biomechanics
subject: Medicine and Health Sciences
subject: Life Sciences
subject: Motor Control

description: The main goal of this review is to investigate how patterns of motor variability during functional tasks differ between patients with CLBP and healthy individuals. The second goal was to evaluate the relationship between pain and motor variability across time in patients with CLBP.
Além do mundo das letras: O caso do analfabetismo em Juromenha
Creators: name: Carvalho, Luísa Maria Serrano De
Publisher: name: Aprender
Year: 2013

description: Vivemos num mundo em que a palavra escrita reina. Na região Alentejo, existem, no entanto, muitos indivíduos que não dominam as competências de leitura e escrita, ou seja, são analfabetos. Por não terem aprendido a ler e a escrever, estes indivíduos possuem uma estrutura cerebral distinta dos indivíduos alfabetizados e, por lhes ter sido “vedado o acesso às letras”, desenvolveram estratégias próprias de aprendizagem que, eventualmente, se traduziram em estilos territoriais de aprendizagem. Neste artigo, pretende-se dar conta, decorrente de uma investigação da qual resultou uma tese de doutoramento, da forma como, tendencialmente, aprenderam os indivíduos analfabetos da localidade de Juromenha, pertencente à freguesia de menor dimensão do concelho de Alandroal: Nossa Senhora do Loreto.
description: Aprender, Revista Aprender nº 34 (outubro de 2013)
Em defesa da Iniciativa Novas Oportunidades: a qualificação de adultos é uma prioridade
Creators: name: Capucha, Luís
Publisher: name: Aprender
Year: 2013

description: A educação de adultos é centenária, mas nunca teve vida fácil. Foi sendo subalternizada, deambulou entre intenções, experiências, avanços e recuos, períodos de maior atividade e outros de escassa dinâmica, normativos levados e por levar à prática e obedeceu a orientações paradigmáticas umas vezes complementares, outras opostas. Com a Iniciativa Novas Oportunidades (INO) despertou para um sonho daqueles que comandam a vida real. Mas agora, meia década depois, em rutura com todas e quaisquer tradições e ao arrepio de todas as referências internacionais, emergem ameaças que se estão a tornar cada vez mais um pesadelo. Este poderia ser o resumo da trajetória da educação e formação de adultos em Portugal, de que aqui daremos conta. Numa primeira parte, com base na bibliografia disponível, far-se-á uma pequena análise da história da educação de adultos em Portugal e dos princípios em que se foram baseando as respetivas políticas, até 2006. Depois, com base em informação estatística e também na observação como participante, analisar-se-á, em tom ensaístico, o período decorrido entre 2007 e 2011, coincidente com o auge da INO. Por fim, enunciar-se-ão alguns dos desafios que a educação de adultos enfrentará no futuro próximo.
description: Aprender, Revista Aprender nº 34 (outubro de 2013)
Efficient Randomized Quasi-Monte Carlo Methods For Portfolio Market Risk
Creators: name: Sak, Halis
name: Başoğlu, İsmail
Publisher: name: arXiv
Year: 2015
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: We consider the problem of simulating loss probabilities and conditional excesses for linear asset portfolios under the t-copula model. Although in the literature on market risk management there are papers proposing efficient variance reduction methods for Monte Carlo simulation of portfolio market risk, there is no paper discussing combining the randomized quasi-Monte Carlo method with variance reduction techniques. In this paper, we combine the randomized quasi-Monte Carlo method with importance sampling and stratified importance sampling. Numerical results for realistic portfolio examples suggest that replacing pseudorandom numbers (Monte Carlo) with quasi-random sequences (quasi-Monte Carlo) in the simulations increases the robustness of the estimates once we reduce the effective dimension and the non-smoothness of the integrands.
description: 14 pages, 6 figures
On the Use of Deep Learning for Blind Image Quality Assessment
Creators: name: Bianco, Simone
name: Celona, Luigi
name: Napoletano, Paolo
name: Schettini, Raimondo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this work we investigate the use of deep learning for distortion-generic blind image quality assessment. We report on different design choices, ranging from the use of features extracted from pre-trained Convolutional Neural Networks (CNNs) as a generic image description, to the use of features extracted from a CNN fine-tuned for the image quality task. Our best proposal, named DeepBIQ, estimates the image quality by average pooling the scores predicted on multiple sub-regions of the original image. The score of each sub-region is computed using a Support Vector Regression (SVR) machine taking as input features extracted using a CNN fine-tuned for category-based image quality assessment. Experimental results on the LIVE In the Wild Image Quality Challenge Database and on the LIVE Image Quality Assessment Database show that DeepBIQ outperforms the state-of-the-art methods compared, having a Linear Correlation Coefficient (LCC) with human subjective scores of almost 0.91 and 0.98 respectively. Furthermore, in most of the cases, the quality score predictions of DeepBIQ are closer to the average observer than those of a generic human observer.
Damped transverse oscillations of interacting coronal loops
Creators: name: Soler, Roberto
name: Luna, Manuel
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Damped transverse oscillations of magnetic loops are routinely observed in the solar corona. This phenomenon is interpreted as standing kink magnetohydrodynamic waves, which are damped by resonant absorption owing to plasma inhomogeneity across the magnetic field. The periods and damping times of these oscillations can be used to probe the physical conditions of the coronal medium. Some observations suggest that interaction between neighboring oscillating loops in an active region may be important and can modify the properties of the oscillations compared to those of an isolated loop. Here we theoretically investigate resonantly damped transverse oscillations of interacting non-uniform coronal loops. We provide a semi-analytic method, based on the T-matrix theory of scattering, to compute the frequencies and damping rates of collective oscillations of an arbitrary configuration of parallel cylindrical loops. The effect of resonant damping is included in the T-matrix scheme in the thin boundary approximation. Analytic and numerical results in the specific case of two interacting loops are given as an application.
description: Accepted for publication in A&A
A Educação de Adultos como forma educativa e política de resistência...
Creators: name: Amiguinho, Abílio
Publisher: name: Aprender
Year: 2013

description: Nesta entrevista, Alberto Melo relata e analisa o seu longo percurso pela educação de adultos e pelo desenvolvimento local. Não ficam dúvidas sobre o caráter político de um e de outro que, indelevelmente, associou na sua trajetória pessoal e social de intervenção comunitária, de quase 50 anos. Os propósitos de emancipação e de libertação das pessoas e das comunidades tornaram a educação de adultos numa prática subversiva que os poderes instituídos procuraram esvaziar, ou desviar sistematicamente, das suas intenções mais genuínas ou populares. Como explicitamente refere, essa será a justificação para o estado atual das políticas públicas neste âmbito. Mas este vazio é também o que exige recuperar o sentido de resistência da educação de adultos e impõe novos projetos e práticas alternativos. O contributo de Alberto Melo é, a este título, absolutamente evidente e incontornável.
description: Aprender, Revista Aprender nº 34 (outubro de 2013)
Disjunctive Answer Set Solvers via Templates
Creators: name: Brochenin, Remi
name: Lierler, Yuliya
name: Maratea, Marco
Publisher: name: arXiv
Year: 2015
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Answer set programming is a declarative programming paradigm oriented towards difficult combinatorial search problems. A fundamental task in answer set programming is to compute stable models, i.e., solutions of logic programs. Answer set solvers are the programs that perform this task. The problem of deciding whether a disjunctive program has a stable model is $Σ^P_2$-complete. The high complexity of reasoning within disjunctive logic programming is responsible for few solvers capable of dealing with such programs, namely DLV, GnT, Cmodels, CLASP and WASP. In this paper we show that transition systems introduced by Nieuwenhuis, Oliveras, and Tinelli to model and analyze satisfiability solvers can be adapted for disjunctive answer set solvers. Transition systems give a unifying perspective and bring clarity in the description and comparison of solvers. They can be effectively used for analyzing, comparing and proving correctness of search algorithms as well as inspiring new ideas in the design of disjunctive answer set solvers. In this light, we introduce a general template, which accounts for major techniques implemented in disjunctive solvers. We then illustrate how this general template captures solvers DLV, GnT and Cmodels. We also show how this framework provides a convenient tool for designing new solving algorithms by means of combinations of techniques employed in different solvers.
description: To appear in Theory and Practice of Logic Programming (TPLP)
Cross study variable concordance with DDI Lifecycle
Creators: name: Iverson, Jeremy
Publisher: name: Zenodo
Year: 2020

description: Since DDI Lifecycle 3.2, the variable cascade has allowed data producers to define the concordance among variables in datasets. Since at least 2014, several longitudinal studies and national statistics organizations have used this metadata structure to document and publish information on variables within single studies or organizations. Separating data definitions into conceptual variables, represented variables, and instance variables allows precise documentation of the data and how it changes over time. The same basic metadata structure can be used to document concordance across studies. Since separate organizations often create conceptual variables with similar meanings as conceptual variables from other organizations, the challenge becomes declaring the comparability of conceptual variables. For the intellectual content work of deciding on comparability, this presents an easier task than individual concording a large number of instance variables. For the technical task of defining the concordance in a structured manner, DDI Lifecycle offers a standardized solution. This presentation will provide an analysis of the DDI Lifecycle metadata structure used to perform the cross study concordance; discuss the workflow used to harmonize hundreds of variables from several large, longitudinal studies; and demonstrate the software tools used to create, publish, and visualize the data concordance. Recorded version of the whole session: https://youtu.be/mBJhJPGM60g
THE ASSOCIATIONS AMONG RACIAL DISCRIMINATION, RACIAL IDENTITY, AND OBSESSIVE-COMPULSIVE SYMPTOMS
Creators: name: Willis, Henry
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: No study to date has explored the link between racial discrimination (RD) and obsessive-compulsive (OC) symptoms within a sample of African American young adults. Furthermore, no studies have investigated the role of racial identity in protecting young adults against the effects of racial discrimination on OC symptom development and maintenance. This study examined the association between RD and changes in OC symptoms, as well as how racial identity moderates this relationship. Participants were 171 African American college students who completed measures of RD, racial identity, and OC symptom distress. Latent profile analysis revealed three patterns of RI: Black Optimist, Race-Focused, and Humanist. RD frequency at Time 1 was positively associated with OC symptom distress approximately one year later for the Race-Focused racial identity group, but unrelated to OC symptom distress for the Black Optimist and Humanist groups.
Polaronic metal phases in La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ uncovered by inelastic neutron and x-ray scattering
Creators: name: Maschek, M.
name: Lamago, D.
name: Castellan, J. -P.
name: Bosak, A.
name: Reznik, D.
name: Weber, F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Among colossal magnetoresistive manganites the prototypical ferromagnetic manganite La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ has a relatively small magnetoresistance, and has been long assumed to have only weak electron-lattice coupling. Here we report that La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ has strong electron-phonon coupling: Our neutron and x-ray scattering experiments show strong softening and broadening of transverse acoustic phonons on heating through the Curie temperature T$_C$ = 350 K. Simultaneously, we observe two phases where metallic resistivity and polarons coexist. The ferromagnetic polaronic metal phase between 200 K and T$_C$ is characterized by quasielastic scattering from dynamic CE-type polarons with the relatively short lifetime of $\mathbfτ\approx 1\,\rm{ps}$. This scattering is greatly enhanced above T$_C$ in the paramagnetic polaronic metal phase. Our results suggest that the strength of magnetoresistance in manganites scales with the inverse of polaron lifetime, not the strength of electron-phonon coupling.
DDI, Dataverse and Colectica: our data management combo
Creators: name: Danciu, Alina
name: Michaud, Geneviève
Publisher: name: Zenodo
Year: 2020

description: Providing to our community a user-friendly interface and data visualisation tool, a powerful search engine and a fluid data download process have always been top priorities of the French Center for Socio-Political Data. In the past year, we worked intensively to implement our Dataverse repository, which answers at least partially to these questions. During the process of importing our Nesstar metadata into Dataverse, we encountered a certain number of issues we had not anticipated, primarily linked to the compatibility between DDI-C and Dataverse. This presentation will mainly tackle this topic, as well as the process of implementing the DDI controlled vocabularies and the harmonisation process of our metadata (institution names, authors, keywords...). In terms of variable management and visualisation, we decided to experiment with the Colectica tools (Designer, Repository and Portal), that we recently implemented at the CDSP and that we intend to use in order to build a DDI-L question bank. The project is in its experimental phase. We'll offer feedback on the our data management choices at this stage, complementary with our Dataverse tool. Recorded version of the whole session: https://youtu.be/mBJhJPGM60g
Interpretable classifiers using rules and Bayesian analysis: Building a better stroke prediction model
Creators: name: Letham, Benjamin
name: Rudin, Cynthia
name: McCormick, Tyler H.
name: Madigan, David
Publisher: name: arXiv
Year: 2015
Subjects: subject: Applications (stat.AP)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We aim to produce predictive models that are not only accurate, but are also interpretable to human experts. Our models are decision lists, which consist of a series of if...then... statements (e.g., if high blood pressure, then stroke) that discretize a high-dimensional, multivariate feature space into a series of simple, readily interpretable decision statements. We introduce a generative model called Bayesian Rule Lists that yields a posterior distribution over possible decision lists. It employs a novel prior structure to encourage sparsity. Our experiments show that Bayesian Rule Lists has predictive accuracy on par with the current top algorithms for prediction in machine learning. Our method is motivated by recent developments in personalized medicine, and can be used to produce highly accurate and interpretable medical scoring systems. We demonstrate this by producing an alternative to the CHADS$_2$ score, actively used in clinical practice for estimating the risk of stroke in patients that have atrial fibrillation. Our model is as interpretable as CHADS$_2$, but more accurate.
description: Published at http://dx.doi.org/10.1214/15-AOAS848 in the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Korean parental thoughts and practices about their children’s language development
Creators: name: Han, Heekyung
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: This study examined parental thoughts about and practices related to their children’s language development in Korean-American communities, specifically Korean language schools and a Korean church. Forty-three Korean immigrant parents with a U.S.-born child aged 3 to 7 participated in a survey. The respondents were divided into two groups by their children’s dominant language spoken at home: parents with a Korean-dominant child and parents with an English-dominant child. Results showed that the two groups of parents have significantly different thoughts about their children’s English-language development. In terms of parents’ reported practices, there were significant differences between the two groups of parents concerning their children’s Korean- and English-language development. In addition, the parents with a Korean-dominant child were more inclined to value and support their mother tongue’s development and showed a positive relationship between their thoughts and reported practices. Limitations of the study and implications for parents are discussed.
Development and Application of Analytical Methods to Evaluate DNAPL Remediation Using a Brine Based Remediation Technology
Creators: name: Sanderson, Patrick M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: With the general inability of existing groundwater remediation techniques to efficiently remove dense non-aqueous phase liquids (DNAPLs) from the subsurface, a novel strategy known as the Brine Barrier Remediation Technique (BBRT) has been proposed as a potential alternative to currently used remedial strategies. However, there are still numerous open issues concerning this new technology including the complexities it introduces into contaminated systems that cause the analytical methods commonly used for system characterization to fail. New analytical methods were developed that were compatible with BBRT, and capable of quantifying the common groundwater contaminant, perchloroethene (PCE), chlorinated degradation products, and two surfactants, MA-80 and Triton X-100 often employed in remediation techniques. The developed methods were subsequently used to calculate mass balances for PCE and surfactant recovery within a field-scale implementation of the BBRT. Supplemental experiments were conducted to more closely examine the fate of unrecovered surfactants in the field system.