cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effectiveness of personal protective measures in reducing pandemic influenza transmission: A systematic review and meta-analysis
Creators: name: Saunders-Hastings, Patrick
name: Crispo, James A.G.
name: Sikora, Lindsey
name: Krewski, Daniel
Publisher: name: My University
Year: 2017
Subjects: Cough etiquette
Facemask
Hand hygiene
Pandemic influenza
Systematic review
Humans
Influenza, Human
Masks
Pandemics
Hand Disinfection

description: The goal of this review was to examine the effectiveness of personal protective measures in preventing pandemic influenza transmission in human populations. We collected primary studies from Medline, Embase, PubMed, Cochrane Library, CINAHL and grey literature. Where appropriate, random effects meta-analyses were conducted using inverse variance statistical calculations. Meta-analyses suggest that regular hand hygiene provided a significant protective effect (OR=0.62; 95% CI 0.52-0.73; I2=0%), and facemask use provided a non-significant protective effect (OR=0.53; 95% CI 0.16-1.71; I2=48%) against 2009 pandemic influenza infection. These interventions may therefore be effective at limiting transmission during future pandemics. PROSPERO Registration: 42016039896.
QRMW: Quantum representation of multi wavelength images
Creators: name: Şahin, Engin
name: Yilmaz, İhsan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this study, we propose quantum representation of multi wavelength images (QRMW) which gives preparation and retrieving procedures of quantum images. Proposed QRMW model represents multi-channel and 2^n x 2^m images. Also, we present image comparison and some image operations based on QRMW model. Comparing our model with the models in literature, QRMW model has less time complexity. Also QRMW model uses fewer qubits than existing models in the literature.
description: 20 pages, 9 figures, Accepted for publication in Turkish Journal of Electrical Engineering and Computer Sciences, 2018
Analog simulation of noisy quantum circuits
Creators: name: Granet, Etienne
name: Hémery, Kévin
name: Dreyer, Henrik
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is well-known that simulating quantum circuits with low but non-zero hardware noise is more difficult than without noise. It requires either to perform density matrix simulations (coming with a space overhead) or to sample over "quantum trajectories" where Kraus operators are inserted randomly (coming with a runtime overhead). We propose a simulation technique based on a representation of hardware noise in terms of trajectories generated by operators that remain close to identity at low noise. This representation significantly reduces the variance over the quantum trajectories, speeding up noisy simulations by factors around $10$ to $100$. As a by-product, we provide a formula to factorize multiple-Pauli channels into a concatenation of single Pauli channels.
description: 8 pages + appendix with code
Evaluation of a Grammar of French Determiners
Creators: name: Laporte, Eric
Publisher: name: arXiv
Year: 2007
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Existing syntactic grammars of natural languages, even with a far from complete coverage, are complex objects. Assessments of the quality of parts of such grammars are useful for the validation of their construction. We evaluated the quality of a grammar of French determiners that takes the form of a recursive transition network. The result of the application of this local grammar gives deeper syntactic information than chunking or information available in treebanks. We performed the evaluation by comparison with a corpus independently annotated with information on determiners. We obtained 86% precision and 92% recall on text not tagged for parts of speech.
description: 10 pages
O Lugar das Palavras na Aula de Língua Materna
Creators: name: Araújo, Carla Barreira
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: Esta comunicação pretende situar-nos no contexto pedagógico-didáctico de promoção da competência lexical, no âmbito da aula de Língua Materna. Reveste-se de suma importância que os professores e educadores conheçam os mecanismos através dos quais se opera o desenvolvimento conceptual e lexical e se sintam estimulados a criar na sala de aula situações que promovam esse mesmo desenvolvimento. Como falantes, as crianças alcançam o conhecimento de uma palavra pelo uso da palavra em contexto, o que significa que a riqueza e precisão lexicais são extremamente influenciadas pelo contexto sociocultural dos alunos. Devido ao facto de se apresentar fortemente determinada pelo meio, a vertente vocabular deve beneficiar de uma atitude pedagógica, por parte do professor, que conduza à ultrapassagem das diferenças baseadas nas assimetrias sociais e culturais dos alunos. Neste sentido, é fundamental traçar como objectivo educativo o desenvolvimento da competência lexical dos alunos, dando às palavras um lugar central na aula de Língua Materna, no sentido de transpor as barreiras limitadoras do acesso ao saber transdisciplinar e do desenvolvimento integral dos alunos. Ao longo desta comunicação, procuraremos reflectir sobre as seguintes questões: Qual é a importância do conhecimento lexical no sucesso escolar? O que significa saber uma palavra? O que a aula de Língua Materna pode fazer para desenvolver e enriquecer a competência lexical dos alunos? Palavras-Chave: Léxico; Vocabulário; Vocábulo; Palavra; Competência Lexical
description: Eduser - Revista de Educação, v. 3 n. 2 (2011): Eduser - Revista de Educação
Lectures on twistor theory
Creators: name: Adamo, Tim
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Broadly speaking, twistor theory is a framework for encoding physical information on space-time as geometric data on a complex projective space, known as a twistor space. The relationship between space-time and twistor space is non-local and has some surprising consequences, which we explore in these lectures. Starting with a review of the twistor correspondence for four-dimensional Minkowski space, we describe some of twistor theory's historic successes (e.g., describing free fields and integrable systems) as well as some of its historic shortcomings. We then discuss how in recent years many of these problems have been overcome, with a view to understanding how twistor theory is applied to the study of perturbative QFT today. These lectures were given in 2017 at the XIII Modave Summer School in mathematical physics.
description: 61 pages, 2 figures. v2: some typos corrected and references added
Uniqueness of axisymmetric viscous flows originating from positive linear combinations of circular vortex filaments
Creators: name: Lévy, Guillaume
name: Liu, Yanlin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Following the recent papers [9] and [10] by T. Gallay and V. uSverák, in the line of work initiated by H. Feng and V. uSverák in their paper [3], we prove the uniqueness of a solution of the axisymmetric Navier-Stokes equations without swirl when the initial data is a positive linear combination of Dirac masses.
Watching the Talk: Talk on Television and Talk About Television - The Case Study of Ahmar Bel Khat Areed
Creators: name: Saleh, Sara
Publisher: name: My University
Year: 2018

description: When studying Arab television, many including some of the better-informed researchers in the Arab world have tended to think mostly of Al Jazeera and news coverage. The academic scholarship thus lacks a more inclusive approach as it excludes a pivotal discussion on entertainment talk shows. This study provides an alternative, unconventional perspective focusing on audience discussion programs. Through content analysis and critical discourse analysis, Ahmar bil-Khat al Areed (Red in Bold Lines), a civic-oriented Lebanese talk show, is critically examined (on the discourse, format and content levels) to fill the knowledge gap left by the existing literature. The present paper proceeds from descriptive studies of this subgenre—drawing on relevant research in communication, media studies, language, sociology and political science—to argue that Ahmar bil-Khat al Areed is an exemplar of issue-oriented talk shows that can contribute to the activation of public spaces through the participation of ordinary individuals in debates on salient personal and social issues during times of conflict.
Automated Mechanism Design: Complexity Results Stemming from the Single-Agent Setting
Creators: name: Conitzer, Vincent
name: Sandholm, Tuomas W
Publisher: name: Carnegie Mellon University
Year: 2007
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: The aggregation of conﬂicting preferences is a central problem in multiagent systems. The key difﬁculty is that the agents may report their preferences insincerely. Mechanism design is the art of designing the rules of the game so that the agents are motivated to report their preferences truthfully and a (socially) desirable outcome is chosen. We propose an approach where a mechanism is automatically created for the preference aggregation setting at hand. This has several advantages, but the downside is that the mechanism design optimization problem needs to be solved anew each time. Hence the computational complexity of mechanism design becomes a key issue. In this paper we analyze the single-agent mechanism design problem, whose simplicity allows for elegant and generally applicable results. We show that designing an optimal deterministic mechanism that does not use payments is N P-complete even if there is only one agent whose type is private information—even when the designer’s objective is social welfare. We show how this hardness result extends to settings with multiple agents with private information. We then show that if the mechanism is allowed to use randomization, the design problem is solvable by linear programming (even for general objectives) and hence in P. This generalizes to any ﬁxed number of agents. We then study settings where side payments are possible and the agents’ preferences are quasilinear. We show that if the designer’s objective is social welfare, an optimal deterministic mechanism is easy to construct; in fact, this mechanism is also ex post optimal. We then show that designing an optimal deterministic mechanism with side payments is N P-complete for general objectives, and this hardness extends to settings with multiple agents. Finally, we show that an optimal randomized mechanism can be designed in polynomial time using linear programming even for general objective functions. This again generalizes to any ﬁxed number of agents.
Implantación del Programa Escuela 2.0. Análisis de un caso de Centro Rural Agrupado
Creators: name: Muñoz-Repiso, Ana García-Valcárcel
name: Gómez-Pablos, Verónica Vasilotta
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: Actualmente se está implementando en España el Programa Escuela 2.0 que supone la dotación masiva de ordenadores y aulas digitales en los centros educativos financiados con fondos públicos. El texto presenta algunos datos globales de la valoración que hacen los profesores implicados en el mismo y analiza la puesta en práctica de este programa en el caso concreto de una escuela rural de Castilla y León. La metodología de investigación ha contemplado el cuestionario, la entrevista y observación como estrategia de obtención de información. Las conclusiones apuntan a una valoración positiva en lo que respecta a las posibilidades que aporta el uso de la tecnología digital en la enseñanza si bien se detectan algunos problemas relevantes en la puesta en práctica relacionados con la conectividad y la implicación del profesorado. Palabras clave: Escuela 2.0, TIC en educación, programa de un ordenador por niño
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
CIHR Knowledge Translation Checklist
Creators: name: Girard, Marie-Eve
Publisher: name: My University
Year: 2021
Subjects: Tool
Knowledge Mobilization
Knowledge translation
checklist

description: This checklist was developed to help CIHR proposal writers think about all thesections in which knowledge translation can be addressed in a CIHR proposal. Use this checklist to check if you have included in your proposal all the important elements related to knowledge translation that are relevant to your research project in each section of the proposal (proposal summary, methodological approach, timeline,roles and responsibilities or description of partners, knowledge translation plan,budget and participant CV).
A collapsar model with disk wind: Implications for supernovae associated with Gamma-Ray Bursts
Creators: name: Hayakawa, Tomoyasu
name: Maeda, Keiichi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We construct a simple but self-consistent collapsar model for gamma-ray bursts (GRBs) and SNe associated with GRBs (GRB-SNe).Our model includes a black hole, an accretion disk, and the envelope surrounding the central system.The evolutions of the different components are connected by the transfer of the mass and angular momentum.To address properties of the jet and the wind-driven SNe, we consider competition of the ram pressure from the infalling envelope and those from the jet and wind.The expected properties of the GRB jet and the wind-driven SN are investigated as a function of the progenitor mass and angular momentum.We find two conditions which should be satisfied if the wind-driven explosion is to explain the properties of the observed GRB-SNe. (1) The wind should be collimated at its base, and (2) it should not prevent further accretion even after the launch of the SN explosion. Under these conditions, some relations seen in the properties of the GRB-SNe could be reproduced by a sequence of different angular momentum in the progenitors.Only the model with the largest angular momentum could explain the observed (energetic) GRB-SNe, and we expect that the collapsar model can result in a wide variety of observational counterparts mainly depending on the angular momentum of the progenitor star.
description: Accepted for publication in ApJ. 15 pages, 14 figures, 2 tables
Redes sociales educativas como introducción a los entornos personales de aprendizaje (PLE’s)
Creators: name: Mediavilla, Manuel Gil
name: Villaverde, Vanesa Ausín
name: Barbero, Fernando Lezcano
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: En este artículo se realiza un acercamiento a los entornos personales de aprendizaje o PLE’s desde uno de sus componentes fundamentales, las redes sociales. En primer lugar se hace un recorrido por sus principales características, y se detalla su clasificación, su aplicación a la docencia y algunos ejemplos de uso. Posteriormente se explican los conceptos básicos sobre redes sociales, su tipología y un análisis pormenorizado de varios servicios actuales. La conclusión consiste en una reflexión sobre los principios éticos de uso de esta herramienta fundamental. Palabras clave: educación; redes sociales; TIC; entornos personales de aprendizaje
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
Ecopolitics Podcast, Season 2, Episode 4: Eco-colonialism and Environmental Justice in the Global South
Creators: name: Katz-Rosene, Ryan
name: Andrée, Peter
Publisher: name: My University
Year: 2021

description: In this episode, Dr. Joseph E. Mbaiwa (University of Botswana) and Dr. Chris Brown (Carleton University) help us examine the theme of eco-colonialism and global environmental justice through a case study on wildlife conservation in Botswana. [Produced by Nicole Bedford; Artwork by Adam Gibbard; Transcription by Allison Brown; Additional Resources prepared by Ashley Fearnall].
Sudakov Representation of the Cachazo-He-Yuan Scattering Equations Formalism
Creators: name: Chachamis, Grigorios
name: Jiménez, Diego Medrano
name: Vera, Agustín Sabio
name: Vázquez-Mozo, Miguel Á.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the use of Sudakov variables greatly simplifies the study of the solutions to the scattering equations in the Cachazo-He-Yuan formalism. We work in the center-of-mass frame for the two incoming particles, which partially fixes the SL(2,C) redundancy in the integrand defining the scattering amplitudes, the remaining freedom translates into a global shift in the azimuthal angle of the outgoing particles. Studying four- and five-particle amplitudes, we see how an appropriate choice of this phase allows for algebraic simplifications when finding solutions to the scattering equations, as well as in the expression of the scattering amplitudes in terms of the locations of the punctures in the sphere. These punctures themselves are remarkably simple functions of the Sudakov parameters.
description: 30 pages, 4 figures. Typos removed. Final version published in JHEP
Automated Mechanism Design: A New Application Area for Search Algorithms
Creators: name: Sandholm, Tuomas W
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Mechanism design is the art of designing the rules of thegame (aka. mechanism) so that a desirable outcome (according to a given objective) is reached despite the fact that each agent acts in his own self-nterest. Examples include the design of auctions, voting protocols, and divorce settlement procedures. Mechanisms have traditionally been designed manually for classes of problems. In 2002, Conitzer and Sandholm introduced the automated mechanism design approach, where the mechanism is computationally created for the specific problem instance at hand. This approach has several advantages: 1) it can yield better mechanisms than the ones known to date, 2) it applies beyond the problem classes studied manually to date, 3) it can circumvent seminal economic
impossibility results, and 4) it shifts the burden of design from man to machine. In this write-up I overview the approach, focusing on problem representations, computational complexity, and initial applications. I also lay out an agenda for future research in this area.
La Educación y Capacitación Laboral en busca de Desarrollo Humano y Territorial. Perspectiva desde el Imaginario Urbano
Creators: name: Gallegos, Oscar Basulto
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: El presente artículo enfatiza en la necesidad de tender hacia una ciudadanía o población más activa y comprometida con los retos de su localidad, a través del logro de una cohesión social y territorial que genere un espíritu de participación colectiva y cooperación permanente, atravesada por una dinámica capacitación ciudadana que permita optimizar los esfuerzos de gestión y cumplimiento de objetivos de bien comunitario en distintos ámbitos del quehacer. Nos referimos a una búsqueda de sentirnos parte de una localidad que genere legitimidad y confianza desde quienes habitan el territorio. Para ello se plantea la necesidad de resignificar los procesos sociales y sus imaginarios urbanos, en el intento por encontrar el tono adecuado para una planificación estratégica territorial tendiente a representar los requerimientos de quienes viven en el lugar. Palabras clave: Educación; desarrollo humano; cohesión social; planificación estratégica territorial.
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
A Test of the Copernican Principle
Creators: name: Caldwell, R. R.
name: Stebbins, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The blackbody nature of the cosmic microwave background (CMB) radiation spectrum is used in a modern test of the Copernican Principle. The reionized universe serves as a mirror to reflect CMB photons, thereby permitting a view of ourselves and the local gravitational potential. By comparing with measurements of the CMB spectrum, a limit is placed on the possibility that we occupy a privileged location, residing at the center of a large void. The Hubble diagram inferred from lines-of-sight originating at the center of the void may be misinterpreted to indicate cosmic acceleration. Current limits on spectral distortions are shown to exclude the largest voids which mimic cosmic acceleration. More sensitive measurements of the CMB spectrum could prove the existence of such a void or confirm the validity of the Copernican Principle.
description: 4 pages, 3 figures
Las Asociaciones de Inmigrantes: Integración y Financiación
Creators: name: Castañeda, Sergio Miranda
name: Matas, Jasús Alberto Valero
name: Coca, Juan Romay
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: As associações de imigrantes desempenham um papel fundamental na recepção e integração dos imigrantes. Esta associação surge da necessidade de conhecer, diferenciar e representar. Este artigo analisa os diferentes tipos de organizações de imigrantes e de apoio a imigrantes, enfatizando a relação entre eles e as autoridades. A forte submissão das associações ao financiamento público e a dificuldade ou facilidade de acesso ao circuito subvencional são cruciais no desenvolvimento da sua própria gestão e sobrevivência das organizações. Por último, apresentamos um caso real em que se analisa o nível de reconhecimento e limites para a concessão de auxílios ou subsídios. Os resultados obtidos permitem concluir que a dependência é condição estrutural dessas entidades e tornou-se parte integrante do seu funcionamento. Palavras-chave: Imigração, parcerias, financiamento, integração de dependência
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
Landau-Ginzburg theory of cortex dynamics: Scale-free avalanches emerge at the edge of synchronization
Creators: name: di Santo, Serena
name: Villegas, Pablo
name: Burioni, Raffaella
name: Muñoz, Miguel A.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Understanding the origin, nature, and functional significance of complex patterns of neural activity, as recorded by diverse electrophysiological and neuroimaging techniques, is a central challenge in neuroscience. Such patterns include collective oscillations emerging out of neural synchronization as well as highly heterogeneous outbursts of activity interspersed by periods of quiescence, called "neuronal avalanches." Much debate has been generated about the possible scale invariance or criticality of such avalanches and its relevance for brain function. Aimed at shedding light onto this, here we analyze the large-scale collective properties of the cortex by using a mesoscopic approach following the principle of parsimony of Landau-Ginzburg. Our model is similar to that of Wilson-Cowan for neural dynamics but crucially, includes stochasticity and space; synaptic plasticity and inhibition are considered as possible regulatory mechanisms. Detailed analyses uncover a phase diagram including down-state, synchronous, asynchronous, and up-state phases and reveal that empirical findings for neuronal avalanches are consistently reproduced by tuning our model to the edge of synchronization. This reveals that the putative criticality of cortical dynamics does not correspond to a quiescent-to-active phase transition as usually assumed in theoretical approaches but to a synchronization phase transition, at which incipient oscillations and scale-free avalanches coexist. Furthermore, our model also accounts for up and down states as they occur (e.g., during deep sleep). This approach constitutes a framework to rationalize the possible collective phases and phase transitions of cortical networks in simple terms, thus helping to shed light on basic aspects of brain functioning from a very broad perspective.
description: Pre-print version of the paper published in Proc. Natl. Acad. Sci. USA
Automated Mechanism Design with a Structured Outcome Space
Creators: name: Conitzer, Vincent
name: Sandholm, Tuomas W
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Previous research on automated mechanism design (proposed in UAI-02) assumed that the outcome space was ﬂatly represented, which makes that work inapplicable if the outcome space is exponential, as it is, for example, in multi-item auctions. This paper introduces (to our knowledge) the ﬁrst more concise representation for the problem, which relies on decomposing the outcome space into distinct issues. While the decomposability makes the input to the design problem polynomial, we show that it is NP-complete
(even with a single agent with only two types) to design a mechanism that maximizes one of the following objectives: 1) expected social welfare when payments are not possible, 2) a general objective function even when payments are possible, and 3) expected payments to the center (designer). We show that the NP-hardness is only weak by developing a pseudopolynomial algorithm for the former two single-agent mechanism design problems with any constant number of types. Finally, we show that when designing randomized mechanisms, we can exploit the structure of the representation and even solve the general problem in polynomial time for any constant number of agents for any growing number of types.
High statistics lattice study of stress tensor correlators in pure $SU(3)$ gauge theory
Creators: name: Borsanyi, Szabolcs
name: Pasztor, Attila
name: Fodor, Zoltan
name: Giordano, Matteo
name: Katz, Sandor D.
name: Pasztor, Attila
name: Ratti, Claudia
name: Schaefer, Andreas
name: Szabo, Kalman K.
name: Toth, Balint C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We compute the Euclidean correlators of the stress tensor in pure $SU(3)$ Yang-Mills theory at finite temperature at zero and finite spatial momenta with lattice simulations. We perform continuum extrapolations using $N_τ=10,12,16,20$ lattices with renormalized anisotropy 2. We use these correlators to estimate the shear viscosity of the gluon plasma in the deconfined phase. For $T=1.5T_c$ we obtain $η/s=0.17(2)$.
A square lattice algebraic spin liquid with SO(5) symmetry
Creators: name: Xu, Cenke
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We propose a critical spin liquid ground state for S=1/2 antiferromagnets on the square lattice. In a renormalization group analysis of the `staggered flux' algebraic spin liquid, we examine perturbations, present in the antiferromagnet, which break its global SU(4) symmetry to SO(5). At physical parameter values, we find an instability towards a fixed point with SO(5) symmetry. We discuss the possibility that this fixed point describes a transition between the Neel and valence bond solid states, and the relationship to the SO(5) non-linear sigma model of Tanaka and Hu.
description: 4 pages, 4 figures
O educador social na construção de pontes socioeducativas contextualizadas
Creators: name: Mateus, Maria Nascimento
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: Este trabalho, de índole teórica, pretende evidenciar o papel do educador social, a necessidade de formação e de aquisição de competências instrumentais e sociais necessárias à criação dinâmica de pontes socioeducativas, determinantes na construção da sua identidade profissional O educador social é um profissional que desenvolve a sua prática num processo de ação reflexão ação, que se debate com problemas, conflitos e dilemas éticos. Serão abordados aspetos fundamentais para o seu reconhecimento público e consolidação enquanto profissional ativo e atuante, impulsionador das mudanças e da rentabilização dos recursos humanos e dos equipamentos a nível local e regional. Palavras- chave: educador social, competências formais e não formais; formação contínua, identidade profissional
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
Automated Market Makers That Enable New Settings: Extending Constant-Utility Cost Functions
Creators: name: Othman, Abraham M
name: Sandholm, Tuomas
Publisher: name: Carnegie Mellon University
Year: 1985
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Automated market makers are algorithmic agents that provide liquidity in electronic markets. We construct two new automated market makers that each solve an open problem of theoretical and practical interest. First, we formulate a market maker that has bounded loss over separable measure spaces. This opens up an exciting new set of domains for prediction markets, including markets on locations and markets where events correspond to the natural numbers. Second, by shifting profits into liquidity, we create a market maker that has bounded loss in addition to a bid/ask spread that gets arbitrarily small with trading volume. This market maker matches important attributes of real human market makers and suggests a path forward for integrating automated market making agents into markets with real money.
Identidades invisibilizadas: Contributo para o conhecimento população cigana local
Creators: name: Nicolau, Lurdes Fernandes
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: No concelho de Bragança os ciganos residem no meio rural e urbano, apresentando diferenciações variadas em relação a outro grupo de ciganos da região. Na sua grande maioria vivem em condições precárias, sobretudo na cidade, onde muitas famílias se concentram na periferia de bairros periféricos, invisibilizados por uma boa parte da população não cigana, que desconhece esta realidade. Entre os ciganos do meio rural e urbano verificam-se diferenciações relativamente às suas condições sócio- económicas e também habitacionais. Palavras-chave: Ciganos; invisibilizados; diferenciações
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
Automated Design of Multistage Mechanisms
Creators: name: Sandholm, Tuomas W
name: Conitzer, Vincent
name: Boutilier, Craig
Publisher: name: Carnegie Mellon University
Year: 1983
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Mechanism design is the study of preference aggregation protocols that work well in the face of self-interested agents. We present the ﬁrst general-purpose techniques for automatically designing multistage mechanisms. These can reduce elicitation burden by only querying agents for information that is relevant given their answers to previous queries. We ﬁrst show how to turn a given(e.g., automatically designed using constrained optimization techniques) single-stage mechanism into the most efﬁcient corresponding multistage mechanism given a speciﬁed elicitation tree. We then present greedy and dynamic programming (DP) algorithms that determine the elicitation tree (optimal in the DP case). Next, we show how the query savings inherent in the multistage model can be used to design the underlying single-stage mechanism to maximally take advantage of this approach. Finally, we present negative results on the design of multistage mechanisms that do not correspond to dominant-strategy single-stage mechanisms: an optimal multistage mechanism in general has to randomize over queries to hide information from the agents.
The Balloon-borne Large Aperture Submillimeter Telescope (BLAST) 2005: A 4 sq. deg Galactic Plane Survey in Vulpecula (l=59)
Creators: name: Chapin, E. L.
name: Ade, P. A. R.
name: Bock, J. J.
name: Brunt, C.
name: Devlin, M. J.
name: Dicker, S.
name: Griffin, M.
name: Gundersen, J. O.
name: Halpern, M.
name: Hargrave, P. C.
name: Hughes, D. H.
name: Klein, J.
name: Marsden, G.
name: Martin, P. G.
name: Mauskopf, P.
name: Netterfield, C. B.
name: Olmi, L.
name: Pascale, E.
name: Patanchon, G.
name: Rex, M.
name: Scott, D.
name: Semisch, C.
name: Truch, M. D. P.
name: Tucker, C.
name: Tucker, G. S.
name: Viero, M. P.
name: Wiebe, D. V.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first results from a new 250, 350, and 500 micron Galactic Plane survey taken with the Balloon-borne Large-Aperture Submillimeter Telescope (BLAST) in 2005. This survey's primary goal is to identify and characterize high-mass proto-stellar objects (HMPOs). The region studied here covers 4 sq. deg near the open cluster NGC 6823 in the constellation Vulpecula (l=59). We find 60 compact sources (<60'' diameter) detected simultaneously in all three bands. Their spectral energy distributions (SEDs) are constrained through BLAST, IRAS, Spitzer MIPS, and MSX photometry, with inferred dust temperatures spanning ~12-40K assuming a dust emissivity index beta=1.5. The luminosity-to-mass ratio, a distance-independent quantity, spans ~0.2-130 L_\odot M_\odot^{-1}. Distances are estimated from coincident 13CO (1->0) velocities combined with a variety of other velocity and morphological data in the literature. In total, 49 sources are associated with a molecular cloud complex encompassing NGC 6823 (distance ~2.3kpc), 10 objects with the Perseus Arm (~8.5kpc) and one object is probably in the outer Galaxy (~14kpc). Near NGC 6823, the inferred luminosities and masses of BLAST sources span ~40-10^4 L_\odot, and ~15-700 M_\odot, respectively. The mass spectrum is compatible with molecular gas masses in other high-mass star forming regions. Several luminous sources appear to be Ultra Compact HII regions powered by early B stars. However, many of the objects are cool, massive gravitationally-bound clumps with no obvious internal radiation from a protostar, and hence excellent HMPO candidates.
description: 42 Pages, 20 figures; Accepted for publication in the Astrophysical Journal; maps and related results available at http://blastexperiment.info/
Nonlocal gravity. Conceptual aspects and cosmological predictions
Creators: name: Belgacem, Enis
name: Dirian, Yves
name: Foffa, Stefano
name: Maggiore, Michele
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Even if the fundamental action of gravity is local, the corresponding quantum effective action, that includes the effect of quantum fluctuations, is a nonlocal object. These nonlocalities are well understood in the ultraviolet regime but much less in the infrared, where they could in principle give rise to important cosmological effects. Here we systematize and extend previous work of our group, in which it is assumed that a mass scale $Λ$ is dynamically generated in the infrared, giving rise to nonlocal terms in the quantum effective action of gravity. We give a detailed discussion of conceptual aspects related to nonlocal gravity and of the cosmological consequences of these models. The requirement of providing a viable cosmological evolution severely restricts the form of the nonlocal terms, and selects a model (the so-called RR model) that corresponds to a dynamical mass generation for the conformal mode. For such a model: (1) there is a FRW background evolution, where the nonlocal term acts as an effective dark energy with a phantom equation of state, providing accelerated expansion without a cosmological constant. (2) Cosmological perturbations are well behaved. (3) Implementing the model in a Boltzmann code and comparing with observations we find that the RR model fits the CMB, BAO, SNe, structure formation data and local $H_0$ measurements at a level statistically equivalent to $Λ$CDM. (4) Bayesian parameter estimation shows that the value of $H_0$ obtained in the RR model is higher than in $Λ$CDM, reducing to $2.0σ$ the tension with the value from local measurements. (5) The RR model provides a prediction for the sum of neutrino masses that falls within the limits set by oscillation and terrestrial experiments. (6) Gravitational waves propagate at the speed of light, complying with the limit from GW170817/GRB 170817A.
description: 60 pages, 12 figures; v2: references added
Barriers and bridges to infection prevention and control: results of a qualitative case study of a Netherlands' surgical unit
Creators: name: Backman, Chantal
name: Marck, Patricia B
name: Krogman, Naomi
name: Taylor, Geoff
name: Sales, Anne
name: Bonten, Marc J M
name: Gigengack-Baars, Ada C M
Publisher: name: My University
Year: 2012

description: The objectives of the study are to observe the overall work environment including infection prevention and control (IP&C) practices on the target surgical unit; to analyse the policies and procedures in the hospital and unit environments; to analyse the barriers and bridges to IP&C that practitioners identify in visual narratives of their unit environment and to collect monthly specific IP&C-related anonymised data.
Rotational broadening and conservation of angular momentum in post-extreme horizontal branch stars
Creators: name: Fontaine, G.
name: Latour, M.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We show that the recent realization that isolated post-extreme horizontal branch (post-EHB) stars are generally characterized by rotational broadening with values of $V_{\rm rot} \sin i$ between 25 and 30 km~s$^{-1}$ can be explained as a natural consequence of the conservation of angular momentum from the previous He-core burning phase on the EHB. The progenitors of these evolved objects, the EHB stars, are known to be slow rotators with an average value of $V_{\rm rot} \sin i$ of $\sim$7.7 km~s$^{-1}$. This implies significant spin-up between the EHB and post-EHB phases. Using representative evolutionary models of hot subdwarf stars, we demonstrate that angular momentum conservation in uniformly rotating strutures (rigid-body rotation) boosts that value of the projected equatorial rotation speed by a factor $\sim$3.6 by the time the model has reached the region of the surface gravity-effective temperature plane where the newly-studied post-EHB objects are found. This is exactly what is needed to account for their observed atmospheric broadening. We note that the decrease of the moment of inertia causing the spin-up is mostly due to the redistribution of matter that produces more centrally-condensed structures in the post-EHB phase of evolution, not to the decrease of the radius per se.
description: Accepted in A&A, 4 pages
Philanthropic Behaviour of Quebecers
Creators: name: Devlin, Rose Anne
name: Zhao, Wenzhuo
Publisher: name: My University
Year: 2016
Subjects: Charitable giving
volunteering
religious donations
secular contributions
Quebec
1607E

description: On average, residents of Quebec give less money and volunteer less time than those residing in all other provinces. This paper empirically examines and compares the giving and volunteering behaviour of Quebecers to that of other Canadians, with the aim of addressing why this difference may exist. We employ the most recent General Social Survey - Giving Volunteering and Participation (GSS GVP 2013) data set and Tobit procedures and find that Quebecers give less money partially because their average endowments of two important determinants, religiosity and household income, are low. Once demographic and socio-economic characteristics are controlled for, Quebecers cash donations are comparable to Ontarians and those in Atlantic Canada, and exceed those of residents of British Columbia; Quebecers are similar to others when it comes to volunteering for religious organizations, but they volunteer significantly less than others for secular ones.
Integrability and duality in spin chains
Creators: name: Stouten, Eyzo
name: Claeys, Pieter W.
name: Caux, Jean-Sébastien
name: Gritsev, Vladimir
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct a new, two-parametric family of integrable models and reveal their underlying duality symmetry. A modular subgroup of this duality is shown to connect non-interacting modes of different systems. We apply the new solution and duality to a Richardson-Gaudin model and generate a novel integrable system termed the $s$-$d$ wave Richardson-Gaudin-Kitaev interacting chain, interpolating $s$- and $d$- wave superconductivity. The phase diagram of this model has a topological phase transition that can be connected to the duality, where the occupancy of the non-interacting mode serves as a topological order parameter.
description: 10 pages, 2 figures, typos added, reference added, footnote [58] added on page 2, changed phrasing on YBE, acknowledgements updated
Quando Cantar vem do Coração: uma Abordagem Metodológica
Creators: name: Castro, Isabel De
Publisher: name: Instituto Politécnico de Bragança
Year: 2016

description: Autores como Rodrigues (1997), Hargreaves (1999), Gordon (2000a), Chapuis (2001), Peery (2002), Castro (2003, 2004), Palheiros (2004), para só referir alguns, são unânimes ao acentuarem o valor da música na vida das pessoas e das crianças em particular, em diferentes aspectos cognitivos e emocionais, quer no seio familiar, quer na escola. Reforçando este sentir, o antropólogo Alan Merrian (1964) refere na sua obra The anthropology of music, there is probably no other human cultural activty which is so all-pervasive and which reaches into, shapes, and often controls so much of human behavior (p. 218) como a música. Pretendo alertar para a importância da música e, em particular, de cantar com e às crianças desde cedo, em diferentes ambientes e contextos. Como refere Perry (2000) ao citar Kuhmerker a aprendizagem de canções facilita a adopção de um vocabulário de começo de leitura e ainda o ritmo e a fraseologia, tanto como as acções e as experiências cinestésicas associadas às canções, ajuda[r] as crianças a associar as palavras a uma variedade mais vasta de experiências linguísticas(p. 482). Palavras-chave: música, canção, cantar, coração, processos
description: Eduser - Revista de Educação, v. 4 n. 1 (2012): Eduser - Revista de Educação
Automated Corpus Analysis and the Acquisition of Large, Multi-Lingual Knowledge Bases for MT
Creators: name: Mitamura, Teruko
name: Nyberg, Eric
name: Carbonell, Jaime G.
Publisher: name: Carnegie Mellon University
Year: 2008
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Although knowledge-based MT systems have the potential to achieve high translation accuracy, each successful application system requires a large amount of hand-coded knowledge (lexicons, grammars, mapping rules, etc.). Systems like KBMT-89 and its descendants have demonstrated how knowledge-based translation can produce good results in technical domains with tractable domain semantics. Nevertheless, the cost of developing large-scale applications with tens of thousands of domain concepts precludes a purely hand-crafted approach. The current challenge for the "next generation" of knowledge-based MT systems is to utilize on-line textual resources and corpus analysis software in order to automate the most laborious aspects of the knowledge acquisition process. This partial automation can in turn maximize the productivity of human knowledge engineers and help to make large-scale applications of knowledge-based MT an economic reality. In this paper we discuss the corpus-based knowledge acquisition methodology used in KANT, a knowledge-based translation system for multi-lingual document production. This methodology can be generalized beyond the KANT interlingua approach for use with any system that requires similar kinds of knowledge.
Arctic Corridors and Northern Voices: Governing marine transportation in the Canadian Arctic Kapiangaqiyuaq (Paulatuk, Inuvialuit Settlement Region, Northwest Territories community report)
Creators: name: Carter, Natalie Ann
name: Dawson, Jackie
name: Parker, Colleen
name: Cary, Julia
name: Gordon, Holly
name: Kochanowicz, Zuzanna
name: Weber, Melissa
Publisher: name: My University
Year: 2018
Subjects: Low impact shipping corridors
Inuit perspectives
Marine transportation governance
Culturally significant marine areas
Arctic shipping impacts

description: Ship traffic in the Canadian Arctic nearly tripled between 1990 and 2015. The Government of Canada is developing a network of low-impact marine transportation corridors in the Arctic that encourages marine transportation traffic to use routes that pose less risk and minimize the impact on communities and the environment. The Low Impact Shipping Corridors will be a framework to guide future federal investments to support marine navigation safety in the North, including improved charting and increased hydrography, in partnership with Northerners. The corridors initiative is co-led by the Canadian Coast Guard, Transport Canada, and Canadian Hydrographic Service. Key considerations in the current prioritization of the Low Impact Shipping Corridors include identification of Inuit and Northerners’ perspectives on 1) the potential impact of marine vessels on marine areas used for cultural and livelihood activities, and on community members; and 2) potential management strategies for the corridors. This report documents Paulatuk community members’ knowledge and extensive year-round use of important marine areas (ecological, socio-cultural, archaeological, and travel routes), the potential impacts of shipping on those areas and on community members, and recommendations for management of the Low Impact Shipping Corridors. The Beaufort Sea Beluga Management Plan, the Paulatuk Char Conservation Plan and the Paulatuk Community Conservation Plan should be referenced to supplement the findings of this report.
Security of NEQR Quantum Image by Using Quantum Fourier Transform with Blind Trent
Creators: name: Şahin, Engin
name: Yilmaz, İhsan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: In this study, the security of Novel Enhanced Quantum Representation (NEQR) of quantum images are suggested by using the Quantum Fourier Transform (QFT) with blind trent. In the protocol, QFT and keys are used to share signature with recipients. So all members know only their signature information which are encrypted output of the QFT. This improves the security of the protocol. In addition, the security of the protocol is provided by using reorder QFT output qubits with permutation of the blind trent. The security analysis expresses security of the transfer of the image with effective secret key usage.
description: 6 pages, 2 figures, accepted for publication in International Journal of Information Security Science, 2018