cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Is flux rope a necessary condition for the progenitor of coronal mass ejections?
Creators: name: Ouyang, Y.
name: Yang, K.
name: Chen, P. F.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A magnetic flux rope structure is believed to exist in most coronal mass ejections (CMEs). However, it has been long debated whether the flux rope exists before eruption or is formed during eruption via magnetic reconnection. The controversy has been continuing because of our lack of routine measurements of the magnetic field in the pre-eruption structure, such as solar filaments. However, recently an indirect method was proposed to infer the magnetic field configuration based on the sign of helicity and the bearing direction of the filament barbs. In this paper, we apply this method to two erupting filament events, one on 2014 September 2 and the other on 2011 March 7, and find that the first filament is supported by a magnetic flux rope and the second filament is supported by a sheared arcade, i.e., the first one is an inverse-polarity filament and the second one is a normal-polarity filament. With the identification of the magnetic configurations in these two filaments, we stress that a flux rope is not a necessary condition for the pre-CME structure.
description: 26 pages, 11 figures, accepted for publication in ApJ
Comunicar Ciência – O caso da Coordenação Interdisciplinar para a Investigação e Inovação (C3i)
Creators: name: Nogueira, Maria João Faca
Publisher: name: Aprender
Year: 2019

description: Este artigo resulta do relatório de estágio curricular para obtenção do grau de mestre. O estágio decorreu na Coordenação Interdisciplinar para a Investigação e Inovação (C3i) entre novembro de 2017 e março de 2018. O principal objetivo deste estudo passa por perceber qual é a importância da comunicação para as empresas, reforçar a necessidade de comunicar os resultados dos trabalhos de investigação, bem como discutir a necessidade de haver alguém que se dedique exclusivamente à comunicação, em todas as empresas.
description: Aprender, Revista Aprender nº 39 (março de 2020)
Proof of some divisibility results on sums involving binomial coefficients
Creators: name: Liu, Ji-Cai
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: By using the Rodriguez-Villegas-Mortenson supercongruences, we prove four supercongruences on sums involving binomial coefficients, which were originally conjectured by Sun. We also confirm a related conjecture of Guo on integer-valued polynomials.
description: 6 pages
Candidate effector proteins from the maize tar spot pathogen Phyllachora maydis suppress immune responses
Creators: name: Rogers, Abigail
name: Namrata Jaiswal
name: Roggenkamp, Emily
name: MacCready, Joshua
name: Chilvers, Martin
name: Scofield, Steven
name: Iyer-Pascuzzi, Anjali
name: Helm, Matthew
Publisher: name: Zenodo
Year: 2023
Subjects: Phyllachora maydis, effectors, localization, immune suppression, reactive oxygen species

description: The fungal phytopathogen Phyllachora maydis is an obligate pathogen of maize and is the causal agent of tar spot disease. It was first identified in the United States in 2015 and has since spread to all corn producing regions within the U.S. Tar spot disease significantly reduces maize yields making it an economically important pathogen. To better understand the molecular mechanisms underlying the P. maydis – maize interaction, we investigated how P. maydis utilizes effectors to induce disease. Leveraging the most recent genome annotation, we identified eighteen candidate virulence (effector) proteins that are expressed during disease development and assessed whether these putative effectors suppress immune responses using heterologous expression systems, including Nicotiana benthamiana and the bacterial type III secretion system from Pseudomonas syringae DC3000. This work was presented as a poster at the 2023 IS-MPMI meeting in Providence, RI
Analytical theory of mesoscopic Bose-Einstein condensation in ideal gas
Creators: name: Kocharovsky, Vitaly V.
name: Kocharovsky, Vladimir V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We find universal structure and scaling of BEC statistics and thermodynamics for mesoscopic canonical-ensemble ideal gas in a trap for any parameters, including critical region. We identify universal constraint-cut-off mechanism that makes BEC fluctuations non-Gaussian and is responsible for critical phenomena. Main result is analytical solution to problem of critical phenomena. It is derived by calculating universal distribution of noncondensate occupation (Landau function) and then universal functions for physical quantities. We find asymptotics of that solution and its approximations which describe universal structure of critical region in terms of parabolic cylinder or confluent hypergeometric functions. Results for order parameter, statistics, and thermodynamics match known asymptotics outside critical region. We suggest 2-level and 3-level trap models and find their exact solutions in terms of cut-off negative binomial distribution (that tends to cut-off gamma distribution in continuous limit) and confluent hypergeometric distribution. We introduce a regular refinement scheme for condensate statistics approximations on the basis of infrared universality of higher-order cumulants and method of superposition and show how to model BEC statistics in actual traps. We find that 3-level trap model with matching the first 4 or 5 cumulants is enough to yield remarkably accurate results in whole critical region. We derive exact multinomial expansion for noncondensate occupation distribution and find its high temperature asymptotics (Poisson distribution). We demonstrate that critical exponents and a few known terms of Taylor expansion of universal functions, calculated previously from fitting finite-size simulations within renorm-group theory, can be obtained from presented solutions.
description: 40 pages, 15 figures
Oryssomus paschoali Almeida & Santos, sp. nov.
Creators: name: Almeida, Lúcia M.
name: Santos, Paula B.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Oryssomus
Oryssomus paschoali

description: 6. O. paschoali Almeida & Santos, sp. nov.
Type material: Holotype, female (BMNH). Type locality: “Paraná, Brazil ”.
Geographical distribution: Brazil (Fig. 15).
description: Published as part of Almeida, Lúcia M. & Santos, Paula B., 2014, Synopsis of Oryssomini Gordon (Coleoptera: Coccinellidae) from the Neotropical region with new species of Oryssomus Mulsant, Pseudoryssomus Gordon and Gordonoryssomus Almeida & Lima, pp. 42-68 in Zootaxa 3846 (1) on page 52, DOI: 10.11646/zootaxa.3846.1.2, http://zenodo.org/record/250860
Alentejo em rede: as redes sociais nas autarquias
Creators: name: Penderlico, Joana Mouquinho
Publisher: name: Aprender
Year: 2019

description: O mundo social está em constante mudança. As cartas e as chamadas em telefones fixos, públicos ou privados, deram lugar aos emails, às chamadas ou mensagens em telemóveis e, recentemente, às mensagens através de uma rede social. As chamadas já não são apenas de voz, mas também de vídeo e a custo zero. A Internet e as redes sociais vieram alterar a forma como as pessoas vivem, convivem, comunicam e até mesmo formas de pensamento. Com a Internet surgiu a Web 2.0 e, com esta, as redes sociais. Na atualidade são sobretudo estas últimas que movem o mundo e aproximam as pessoas. O presente trabalho pretende demonstrar exatamente esta realidade, com enfoque para a forma como as autarquias conseguem efetuar um trabalho de proximidade através das redes sociais, fazendo um levantamento das autarquias do Alentejo e das redes sociais que estas utilizam. As Câmaras Municipais aqui retratadas são as do distrito de Beja, Évora, Portalegre e os quatro municípios de Setúbal pertencentes ao Alentejo: Alcácer do Sal, Grândola, Santiago do Cacém e Sines. Foi feita uma observação de todos os municípios do Alentejo sobre as redes sociais que utilizam e como é feita esta utilização, tendo em conta alguns indicadores como a periodicidade ou a frequência, por exemplo.
description: Aprender, Revista Aprender nº 39 (março de 2020)
A presença online dos jornais do Alentejo
Creators: name: Da Silva, Adam Lucas Weber
name: Alencar, Alcilaine De Macedo
name: Junior, Claudinei Lopes
name: Da Silva, Thayná Bressan
Publisher: name: Aprender
Year: 2019

description: Este trabalho tem como principal objetivo salientar a presença dos jornais regionais portugueses no Alentejo. Além disso, pretende‐se apresentar conceitos de jornalismo de proximidade (Camponez, 2002) e de ciberjornalismo de proximidade (Garcia, 2017); explanar a história e o percurso do ciberjornalismo português, no âmbito nacional (Bastos, 2010, 2011, 2014) e de proximidade, também chamado de regional, (Jerónimo, 2013, 2015, 2017) especificando a realidade e os desafios dessa vertente (Garcia, 2017); e por fim, atentar‐se ao jornalismo (Guimarães, 2017) e ciberjornalismo na região do Alentejo. Por meio de uma pesquisa, cujo método foi a análise de conteúdo e a observação não participativa dos dados (Schultz, 1999 & Zamith, 2008), procurou‐se mensurar a presença online categorizando os jornais alentejanos pela forma que utilizam o ciberespaço para a disposição de notícia. Em suma, a pesquisa empírica comprovou que a atuação do ciberjornalismo no Alentejo ainda é uma prática inexplorada, logo não tem aproveitado de modo estratégico as potencialidades oferecidas pela cibermedia.
description: Aprender, Revista Aprender nº 39 (março de 2020)
XUV lasing during strong-field assisted transient absorption in molecules
Creators: name: Bredtmann, Timm
name: Chelkowski, Szczepan
name: Bandrauk, Andre. D.
name: Ivanov, Misha
Publisher: name: arXiv
Year: 2015
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Using ab-initio non-Born-Oppenheimer simulations, we demonstrate amplification of XUV radiation in a high-harmonic generation type process using the example of the hydrogen molecular ion. A small fraction of the molecules is pumped to a dissociative Rydberg state from which IR-assisted XUV amplification is observed. We show that starting at sufficiently high IR driving field intensities the ground state molecules become quasi-transparent for XUV radiation, while due to stabilization gain from Rydberg states is maintained, thus leading to lasing from strongly driven Rydberg states. Further increase of the IR intensity even leads to gain by initially unexcited molecules, which are quickly excited by the driving IR pulse.
Explicit versions of the prime ideal theorem for Dedekind zeta functions under GRH, II
Creators: name: Grenié, Loïc
name: Molteni, Giuseppe
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11R42 (Primary), 11Y70 (Secondary)

description: We have proved recently several explicit versions of the prime ideal theorem under GRH. Here we prove a version with optimal asymptotic behaviour.
description: Followed referee's advice including changing title
Current Practices in Division I Men’s Basketball Event Staff Management: The Effect of Arena and Management Factors on Event Staffing Practices
Creators: name: Culbertson, Hunter
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: There are currently 345 NCAA Division I men's basketball teams. Each of these teams competes at a home arena operated by an event management organization to accommodate the wants, needs, and desires of everyone in attendance of the event. To ensure proper security and customer service, an event manager must recruit, train, and supervise a coordinated team of event staff. While general event management recommendations have been discussed throughout the literature, an assessment of current practices in collegiate athletic event staffing has not been fully explored. Event staffing methods and organizational culture perceptions were surveyed, collected, and analyzed in this study. In addition to establishing current practices, differences in event staffing methods were analyzed based on attendance figures, conference affiliation, cultural perceptions, and the internal/external status of event management organizations. Also, differences in organizational culture perceptions between internal and external organizations were analyzed.
A ética e a deontologia do jornalismo na era digital: a problemática da desinformação
Creators: name: Godinho, Rui Miguel
name: Fernandes, Nuno
Publisher: name: Aprender
Year: 2019

description: Devido a uma multiplicidade de ferramentas e de recursos que surgiram com o aparecimento da internet, a produção de informação é cada vez mais fácil, seja em termos humanos ou económicos. Isso, aliado ao facto de vivermos numa era onde a informação viaja cada vez mais rápido, faz com que alguns princípios básicos do jornalismo, como o cruzamento de fontes e de informações, sejam cada vez menos praticados. Graças a isso, o fenómeno da desinformação tem vindo a aumentar e as fake news (tal como outros conteúdos) acabam por ver no ambiente digital o habitat preferencial para a sua difusão. Este tipo de conteúdos acaba por ter um efeito negativo na sociedade e na forma como esta encara o jornalismo. O presente artigo procura analisar qual o impacto das fake news no jornalismo, em termos éticos e deontológicos, como é que estas podem – ou devem – ser combatidas, procurando também ilustrar o atual panorama informativo em Portugal e a confiança que os portugueses têm no setor media.
description: Aprender, Revista Aprender nº 39 (março de 2020)
Standing Sausage Modes In Nonuniform Magnetic Tubes: An Inversion Scheme For Inferring Flare Loop Parameters
Creators: name: Chen, Shao-Xia
name: Li, Bo
name: Xiong, Ming
name: Yu, Hui
name: Guo, Ming-Zhe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Standing sausage modes in flare loops are important for interpreting quasi-periodic pulsations (QPPs) in solar flare lightcurves. We propose an inversion scheme that consistently uses their periods $P$ and damping times $τ$ to diagnose flare loop parameters. We derive a generic dispersion relation governing linear sausage waves in pressure-less straight tubes, for which the transverse density inhomogeneity takes place in a layer of arbitrary width $l$ and is of arbitrary form. We find that $P$ and $τ$ depend on the combination of $[R/v_{\rm Ai}, L/R, l/R, ρ_{\rm i}/ρ_{\rm e}]$, where $R$ is the loop radius, $L$ is the looplength, $v_{\rm Ai}$ is the internal Alfvén speed, and $ρ_{\rm i}/ρ_{\rm e}$ is the density contrast. For all the density profiles examined, $P$ and $τ$ experience saturation when $L/R \gg 1$, yielding an inversion curve in the $[R/v_{\rm Ai}, l/R, ρ_{\rm i}/ρ_{\rm e}]$ space with a specific density profile when $L/R$ is sufficiently large. When applied to a spatially unresolved QPP event, the scheme yields that $R/v_{\rm Ai}$ is the best constrained, whereas $l/R$ corresponds to the other extreme. For spatially resolved QPPs, while $L/R \gg 1$ cannot be assumed beforehand, an inversion curve remains possible due to additional geometrical constraints. When a spatially resolved QPP event involves another mode, as is the case for a recent event, the full set of $[v_{\rm Ai}, l, ρ_{\rm i}/ρ_{\rm e}]$ can be inferred. We conclude that the proposed scheme provides a useful tool for magneto-seismologically exploiting QPPs.
description: 26 pages, 5 figures, accepted for publication in ApJ
História no feminino: o grande desafio da democracia portuguesa
Creators: name: Guimarães, Adriana Mello
name: Lamy, Sónia
name: Silva, Nuno
Publisher: name: Aprender
Year: 2019

description: O contexto português contemporâneo tem sido caracterizado por uma preocupação com a igualdade de oportunidades entre mulheres e homens, expressa sobretudo nas mais recentes políticas públicas implementadas, como a mais recente lei da paridade. Apesar disto há desigualdades de género que se mantêm nomeadamente no emprego e, sobretudo, nos lugares de topo e de tomada de decisão, como as elites políticas. Partindo da ideia de que a classe política é um elo de ligação entre a sociedade civil e o exercício de poder, consideramos que o modo como estes se estruturam é muito relevante para aquela que é a construção social sobre a igualdade de género. A verdade é que a ideia de uma mulher desempenhar um cargo político ainda não é bem vista por parte da população portuguesa. E se, por um lado, assistimos ao desenvolvimento de um panorama com uma maior presença feminina no cenário político, como Theresa May, Angela Merkel ou Dilma Rousseff, que vieram modificar algumas mentalidades, por outro lado, ainda consideramos haver um longo percurso no sentido da igualdade de género. Assim, neste artigo pretendemos traçar um percurso histórico que tem por base alguns dos momentos mais importantes no caminho que as mulheres têm feito no sentido da igualdade de género no contexto político. Esta participação cívica das mulheres no espaço político parece‐nos ser um imperativo da democracia.
description: Aprender, Revista Aprender nº 39 (março de 2020)
Comunicação e intervenção, através do jornalismo
Creators: name: Brites, Maria José
Publisher: name: Aprender
Year: 2019

description: A comunicação constitui‐se como uma excelente forma de empoderar os cidadãos, dentro da comunicação, o jornalismo reveste‐se de um caráter fundamental. Neste artigo, procede‐se a uma reflexão exploratória sobre os contextos mediáticos e as suas possibilidades de ligação aos cidadãos, muito em particular com incidência em autores como Dewey, Freinet, Freire e Tufte. Em articulação, enumeram‐se duas investigações, RadioActive Europe e ANLite, nas quais se usou os media e o jornalismo em trabalho colaborativo com diferentes comunidades.
description: Aprender, Revista Aprender nº 39 (março de 2020)
Limiting Factors Affecting Stage I Treatment: A Biomechanical Perspective
Creators: name: Gibson, Christopher
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Objectives: Stage 1 orthodontic tooth movement plays a critical role affecting the efficiency of treatment. However, the limiting factors to stage I tooth movement are poorly defined. We hypothesize that resistance to sliding (RS) between the archwire and the bracket in Stage 1 therapy can contribute to tooth movement and is dependent upon the hyperelastic behaviors of archwire materials and the type of geometric malalignment. Methods: A device was fabricated that allows manipulation of three brackets into multiple malocclusion scenarios (In-out, rotation, tipping, and vertical step). Using an Instron®, a straight segment of archwire was pulled through each configuration at a constant rate and the force required was recorded. In each malocclusion scenario, a series of data was collected on Resistance to Sliding (RS) related to magnitude of archwire deflection. For each malocclusion scenario, 10 increments were tested, and each sequence was repeated five times. One-way ANOVA and piecewise linear regression analysis were used to analyze the data. Results: Using a 0.016” CuNiTi archwire, critical angles and deflections were defined as the point where a rapid significant increase in the RS response was observed. These points were determined for in-out, rotation, tipping, and vertical step to be 2.23mm, 4.83˚, 2.58˚, and 1.88mm, respectively. Conclusion: Clinical implications can be extrapolated regarding the frictional forces present in differing malocclusion scenarios, and could be utilized to help determine proper selection of archwire size and material to achieve more ideal mechanical control in the early stages of treatment.
The slowest spinning X-ray pulsar in an extragalactic globular cluster
Creators: name: Zolotukhin, Ivan
name: Bachetti, Matteo
name: Sartore, Nicola
name: Chilingarian, Igor
name: Webb, Natalie A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Neutron stars are thought to be born rapidly rotating and then exhibit a phase of a rotation-powered pulsations as they slow down to 1-10 s periods. The significant population of millisecond pulsars observed in our Galaxy is explained by the recycling concept: during an epoch of accretion from a donor star in a binary system, the neutron star is spun up to millisecond periods. However, only a few pulsars are observed during this recycling process, with relatively high rotational frequencies. Here we report the detection of an X-ray pulsar with $P_{\rm spin} = 1.20$ s in the globular cluster B091D in the Andromeda galaxy, the slowest pulsar ever found in a globular cluster. This bright (up-to 30% of the Eddington luminosity) spinning-up pulsar, persistent over the 12 years of observations, must have started accreting less than 1 Myr ago and has not yet had time to accelerate to hundreds of Hz. The neutron star in this unique wide binary with an orbital period $P_{\rm orb} = 30.5$ h in a 12 Gyr old, metal rich star cluster, accretes from a low mass, slightly evolved post-main sequence companion. We argue that we are witnessing a binary formed at relatively recent epoch by getting a $\sim 0.8M_\odot$ star in a dynamical interaction -- a viable scenario in a massive dense globular cluster like B091D with high global and specific stellar encounter rates. This intensively accreting non-recycled X-ray pulsar provides therefore a long-sought missing piece in the standard pulsar recycling picture.
description: 16 pages, 8 figures, accepted to ApJ
A Needs Assessment to Address Family Presence During Resuscitation
Creators: name: Dimsdale, Carolina
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Despite evidence that Family Presence During Resuscitation (FPDR) improves family satisfaction with the end of life experience in the intensive care unit and can improve family’s psychological outcomes there are no additional resources or guidelines to assist healthcare professionals with implementing FPDR at a large academic medical center in the southeastern United States. The purpose of this project was to conduct a systematic needs assessment in order to provide recommendations for implementation of FPDR guidelines in the hospital's adult intensive care units. Multi-disciplinary members of the adult code team (n = 200) were surveyed online regarding their beliefs, experience with and decision making regarding FPDR. The needs assessment provided a realistic perspective of the institution’s existing practices and a glimpse of potential barriers to implementation of guidelines that will be necessary to address in order to establish change. Analysis of the needs assessment data showed four issues related to FPDR; varying comfort with FPDR, resistance, uncertainty in role, and supporting factors.
Zebrafish collective behaviour in heterogeneous environment modeled by a stochastic model based on visual perception
Creators: name: Collignon, Bertrand
name: Séguret, Axel
name: Halloy, José
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Collective motion is one of the most ubiquitous behaviours displayed by social organisms and has led to the development of numerous models. Recent advances in the understanding of sensory system and information processing by animals impel to revise classical assumptions made in decisional algorithms. In this context, we present a new model describing the three dimensional visual sensory system of fish that adjust their trajectory according to their perception field. Furthermore, we introduce a new stochastic process based on a probability distribution function to move in targeted directions rather than on a summation of influential vectors as it is classically assumed by most models. We show that this model can spontaneously transits from consensus to choice. In parallel, we present experimental results of zebrafish (alone or in group of 10) swimming in both homogeneous and heterogeneous environments. We use these experimental data to set the parameter values of our model and show that this perception-based approach can simulate the collective motion of species showing cohesive behaviour in heterogeneous environments. Finally, we discuss the advances of this multilayer model and its possible outcomes in biological, physical and robotic sciences.
description: 15 pages, 16 figures
Posters
Creators: name: Marchão, Amélia
name: Henriques, Helder
Publisher: name: Aprender
Year: 2018

description: A construção e a divulgação do conhecimento constituem uma oportunidade para desenvolver relações de “cumplicidade científica” no âmbito do trabalho em Educação. A interação entre docentes, estudantes e profissionais em Educação de Infância permite o aprofundamento e a complementaridade de modelos formativos em contextos educativos onde é assumida a centralidade da Pedagogia em Participação e, consequentemente, da criança enquanto sujeito com direitos e competências. Inspirados pelas considerações anteriores, no âmbito do encontro Diálogos em Educação III realizado em 2017, docentes da Escola Superior de Educação e Ciências Sociais do Instituto Politécnico de Portalegre (ESECS‐IPP), profissionais em Educação de Infância e estudantes do Mestrado em Educação Pré‐Escolar, assumiram o desafio de construir materiais que refletissem a interação formativa, sobretudo, entre a instituição de ensino superior e os contextos educativos/profissionais. Deste processo resultou a construção de cinco posters que versam sobre assuntos amplamente desenvolvidos no âmbito da formação proporcionada pela ESECS‐IPP onde está ancorada a revista Aprender: a Pedagogia em participação; o Estatuto da criança e as Orientações Curriculares em Educação Pré‐Escolar (OCEPE). É exatamente sobre estas grandes temáticas em Educação de Infância, a partir dos materiais então construídos e agora publicados com as adaptações necessárias, que o leitor pode conhecer e percorrer uma parte do trabalho que se vai desenvolvendo nesta instituição cuja matriz identitária é a Educação.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
Unintended Consequences of Devolution: Regionalization and Secessionist Politics in Contemporary Western Europe
Creators: name: Deering, Liam
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: This thesis seeks to show that in a region with pre-existing secessionist sentiment, the creation of a regional legislative institution and an accompanied devolution of powers and competencies to this institution leads to a regionalization of the region’s (and possibly central state’s) party system. This regionalization of the party system fosters support for explicitly secessionist parties by providing them access to the government and to the media. The process of devolution occurred in Catalonia, Flanders, and Scotland during the late twentieth century and continued into the twenty-first century. These three regions will act as evidence of this regionalization and the strengthening of secessionist parties as a result of the creation of a regional legislative institution and the subsequent devolution of powers and competencies.
A política brasileira para a Educação Especial: Algumas contribuições
Creators: name: De Souza, Sirleine Brandão
Publisher: name: Aprender
Year: 2018

description: O presente texto tem como objetivo apresentar legislação que serviu de referência para a organização de ações referentes à Educação Especial na atual perspetiva da Inclusão no Brasil; discutir algumas características que permitem elucidar os embates ideológicos constitutivos da sociedade, e que, portanto, favorecem interpretações polissêmicas de tais documentos; abordar a Política Nacional de Educação Especial por meio dos Planos Nacionais de Educação inscritos como Leis tencionando a discussão de que a Lei por si só não modifica as bases que sustentam a Educação Especial. Para tanto buscou‐se apoio teórico em autores que abordam a correlação entre os embates de diferentes forças sociais relacionando às influências tanto na legislação quanto na prática e ação voltadas para o alcance da qualidade almejada na educação e mais especificamente na Educação Especial, além de autores que empreendem a crítica do e no campo, como possibilidade de avanço nas discussões. Estabeleceu‐se como metodologia: a) análise do material legal, a saber, Resolução CNE/CEB nº 2/ 2001, a Política Nacional de Educação Especial na Perspetiva da Educação Inclusiva de 2008, a Resolução nº4/2009, e os Planos Nacionais de Educação (2001 e 2014); b) comparação entre a documentação; c) estabelecimento de diferenças, semelhanças e rupturas na forma de conceituar o sujeito alvo da Educação Especial.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
Pensamento Crítico, Cidadania e paisagem. Uma experiência no pré‐escolar
Creators: name: Castro, Miguel
Publisher: name: Aprender
Year: 2018

description: A partir da paisagem, conceito muito caro à ciência geográfica e que se tem constituído como uma linha de base nos estudos espaciais, pretendeu‐se utilizar a sua observação como instrumento de educação cívica e espacial. O sistema escolar do século XXI pretende que a formação dos alunos não se restrinja apenas aos conteúdos e conhecimentos científicos, mas que forme cidadãos críticos e interventivos face ao mundo globalizado onde se integram. Espera‐se da escola que proporcione skills que permitam, não apenas compreender e viver no mundo atual, mas também introduza novas formas de pensar, trabalhar e desenvolver capacidades de utilizar as novas ferramentas para trabalhar e comunicar. Sendo a paisagem reflexo da ação ou inação do homem sobre o meio, a sua observação atenta fornece-nos informações sobre a realidade observada e a sua construção, e aponta pistas para intervenção. Este processo parte de quem observa o meio e de forma crítica, o entendem e o pretende transformar ou preservar. Assim, olhar com profundidade a paisagem deve começar nos primeiros anos de escola, pois conduz à formação de bases para desenvolver adultos interventivos e pró‐ativos. O objetivo do estudo foi tentar perceber as potencialidades que a paisagem pode ter na formação cívica e geográfica das crianças em idade‐pré‐escolar. Construímos uma ficha de observação da paisagem que foi aplicada em vários Jardins‐de‐infância do concelho de Portalegre, Portugal. Para além da ficha as educadoras aplicaram igualmente a observação do meio de forma indireta, através de fotografias que apresentavam a realidade claramente positiva ou negativa.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
title: Spaghetti junctions in the body: rare cause of venous thrombosis
Creators: name: Al-Mousllie, Ibrahim
Publisher: name: EURORAD
Year: 2023
Subjects: subject: Head & neck imaging
subject: Anatomy
subject: Head and neck
subject: Oncology
subject: Vascular
subject: Veins / Vena cava
subject: CT
subject: Catheters
subject: Aneurysms
subject: Cancer
subject: Drugs / Reactions
subject: Embolism / Thrombosis
subject: Clinical Cases

description: Clinical History: A 71-year-old woman with a history of mamma cancer treated with mastectomy comes to the emergency department because of pain and swelling in the right neck. She received chemotherapy for the last 15 months through a Port-a-cath, which was removed 5 days ago from the right subclavian vein (Fig. 1).

description: 71 years, female
Cold gas and the disruptive effect of a young radio jet
Creators: name: Morganti, R.
name: Oosterloo, T.
name: Maccagni, F. M.
name: Gereb, K.
name: Oonk, J. B. R.
name: Tadhunter, C. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Newly born and young radio sources are in a delicate phase of their life. Their jets are fighting their way through the surrounding gaseous medium, strongly experiencing this interaction while, at the same time, impacting and affecting the interstellar medium (ISM). Here we present the results from two studies of HI (in absorption) and molecular gas illustrating what can be learned from these phases of the gas. We first describe a statistical study with the WSRT. The study shows that the young radio sources not only have an higher detection rate of HI, but also systematically broader and more asymmetric HI profiles, most of them blueshifted. This supports the idea that we are looking at young radio jets making their way through the surrounding ISM, which also appears to be, on average, richer in gas than in evolved radio sources. Signatures of the impact of the jet are seen in the kinematics of the gas. However, even among the young sources, we identify a population that remains undetected in HI even after stacking their profiles. Orientation effects can only partly explain the result. These objects either are genuinely gas-poor or have different conditions of the medium, e.g. higher spin temperature. We further present the ALMA study of molecular gas in IC5063 to trace in detail the jet impacting the ISM. The kinematics of the cold, molecular gas co-spatial with the radio plasma shows this process in action. The ALMA data reveal a fast outflow of molecular gas extending along the entire radio jet (~1 kpc), with the highest outflow velocities at the location of the brighter hot-spot. We propose a scenario where the radio jet is expanding into a clumpy medium, interacting directly with the clouds and inflating a cocoon that drives a lateral outflow into the ISM.
description: Proceedings of the "5th Workshop on Compact Steep Spectrum and GHz-peaked Spectrum Radio Sources". To be published in Astronomische Nachrichten (6 pages, 6 figures)
"What kind of a flower is that?" A contrasting model for critiquing lessons Corrected version 2020
Creators: Fanselow, John
Publisher: name: Columbia University
Year: 1982
Subjects: Education
Teachers
Teaching
Observation (Educational method)

description: In 1980, Alan Maley, at the time the British Council Language Teaching Officer in Paris organized a conference in Paris on observation in English and Foreign Language classrooms with the Language Teaching Officer at the Goethe Institute. They invited 12 people who had written about classroom observation from the UK, France, Germany and the US. In 1982, the Goethe Institute published a book containing each of the presentations. My presentation was titled “What kind of a flower is that? In my presentation I descried a classroom observation system called FOCUS which had been published in the TESOL Quarterly in March, 1977 titled,“Beyond Rashomon—Conceptualizing and Describing the Teaching Act.”
A criança, a ciência e o conhecimento do mundo
Creators: name: Rebola, Fernando
name: Cid, Francisco
Publisher: name: Aprender
Year: 2018

description: A realização e a discussão de atividades de natureza científica com ou por crianças de educação pré-escolar assenta em dois pressupostos: podemos realizar e discutir com as crianças essas atividades; devemos, temos a obrigação de realizar e discutir com elas essas atividades. A possibilidade de realizar atividades de natureza científica com estas crianças advém do facto de elas serem curiosas, quererem compreender o mundo que as rodeia e mostrarem uma elevada plasticidade cerebral, ou seja, a capacidade do cérebro para mudar, em resposta a estímulos ambientais. À pergunta: como realizar atividades de natureza científica com crianças? A resposta assertiva é: através da realização de trabalho prático, preparado de acordo com a perspetiva construtivista da aprendizagem. Na base deste texto esteve a realização de trabalhos práticos, em sala de jardim‐de‐infância e subordinados aos temas “germinação e crescimento de plantas” e “luz e sombra”, os quais se enquadram nas Orientações Curriculares para a Educação Pré‐Escolar, relativamente às Ciências Naturais na Área do Conhecimento do Mundo. Estes trabalhos permitiram mostrar que a realização de atividades de natureza científica pode ajudar a criança que frequenta a educação pré‐escolar a compreender melhor o mundo que a rodeia, além de lhe permitir desenvolver diversas competências, fundamentais para a sua vida, mas que também são próprias da atividade científica.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
A Literatura Infantil e a Matemática na Educação Pré‐Escolar: uma relação (im)provável?
Creators: name: Mendes, Teresa
name: Cebola, Graça
Publisher: name: Aprender
Year: 2018

description: Neste artigo, apresenta‐se uma proposta didática para a Educação Pré‐escolar, concebida numa perspetiva integrada do currículo, tal como é preconizado nas Orientações Curriculares para a Educação Pré‐Escolar (2016), e tendo como finalidade estabelecer conexões entre os domínios da Matemática e da Linguagem Oral e Abordagem à Escrita, a partir da leitura e exploração de uma história infantil – a obra O Grufalão, da autoria de Julia Donaldson, com ilustrações de Axel Scheffler. O livro instituiu‐se como o ponto de partida para a conceção desta proposta, constituída por diversas tarefas passíveis de serem adotadas e/ou adaptadas, em contexto de jardim de infância, por (futuros) educadores. Pretende‐se, deste modo, demonstrar que, a partir da leitura de uma obra de Literatura Infantil, com conteúdo matemático incorporado ou não, se pode delinear um conjunto de tarefas que não só permitam envolver afetivamente, e de forma compreensiva, a criança com o livro mas também outro tipo de tarefas, promotoras do desenvolvimento da linguagem oral e da consciência fonológica (consciência silábica e fonémica), bem como de tarefas matemáticas que propiciem a aquisição de ideias e de conceitos matemáticos e o desenvolvimento de processos matemáticos (resolução de problemas, comunicação matemática e raciocínio matemático), numa perspetiva holística e integradora.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
Geo-spatial Location Spoofing Detection for Internet of Things
Creators: name: Koh, Jing Yang
name: Nevat, Ido
name: Leong, Derek
name: Wong, Wai-Choong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We develop a new location spoofing detection algorithm for geo-spatial tagging and location-based services in the Internet of Things (IoT), called Enhanced Location Spoofing Detection using Audibility (ELSA) which can be implemented at the backend server without modifying existing legacy IoT systems. ELSA is based on a statistical decision theory framework and uses two-way time-of-arrival (TW-TOA) information between the user's device and the anchors. In addition to the TW-TOA information, ELSA exploits the implicit available audibility information to improve detection rates of location spoofing attacks. Given TW-TOA and audibility information, we derive the decision rule for the verification of the device's location, based on the generalized likelihood ratio test. We develop a practical threat model for delay measurements spoofing scenarios, and investigate in detail the performance of ELSA in terms of detection and false alarm rates. Our extensive simulation results on both synthetic and real-world datasets demonstrate the superior performance of ELSA compared to conventional non-audibility-aware approaches.
description: A shorten version of this work has been accepted to the IEEE IoT Journal (IoT-J) on 08-Feb-2016
A Educação Artística no universo infantil: Ser feliz, aprender e brincar com arte!
Creators: name: Porto, Susana Maia
Publisher: name: Aprender
Year: 2018

description: Objetivando‐se refletir sobre as Orientações Curriculares para a Educação Pré‐Escolar (OCEPE) (Silva et al. 2016), o presente artigo vai ao encontro de hodiernas abordagens metodológicas para a educação artística da criança, em contexto pré‐escolar, com base num trabalho holístico e transversal às expressões artísticas que tem vindo a ser realizado na Escola Superior de Educação e Ciências Sociais do Instituto Politécnico de Portalegre. Pretende‐se expor atividades/projetos artísticos desenvolvidos com crianças em idade pré‐escolar com relação à educação artística e à luz das OCEPE, não esquecendo nunca, e de modo algum, a importância de a criança ser feliz no jardim de infância/pré‐escola e de aprender por meio da brincadeira e do jogo, atendendo ao prazer em explorar, transformar, experimentar e criar.
description: Aprender, Revista Aprender nº 38 (junho de 2018)
Self-Gravitational Force Calculation of Second Order Accuracy for Infinitesimally Thin Gaseous Disks in Polar Coordinates
Creators: name: Wang, Hsiang-Hsu
name: Yen, David C. C.
name: Taam, Ronald E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Investigating the evolution of disk galaxies and the dynamics of proto-stellar disks can involve the use of both a hydrodynamical and a Poisson solver. These systems are usually approximated as infinitesimally thin disks using two- dimensional Cartesian or polar coordinates. In Cartesian coordinates, the calcu- lations of the hydrodynamics and self-gravitational forces are relatively straight- forward for attaining second order accuracy. However, in polar coordinates, a second order calculation of self-gravitational forces is required for matching the second order accuracy of hydrodynamical schemes. We present a direct algorithm for calculating self-gravitational forces with second order accuracy without artifi- cial boundary conditions. The Poisson integral in polar coordinates is expressed in a convolution form and the corresponding numerical complexity is nearly lin- ear using a fast Fourier transform. Examples with analytic solutions are used to verify that the truncated error of this algorithm is of second order. The kernel integral around the singularity is applied to modify the particle method. The use of a softening length is avoided and the accuracy of the particle method is significantly improved.
description: 35 pages, 7 figures, accepted for publication in ApJS
Spread of entanglement for small subsystems in holographic CFTs
Creators: name: Kundu, Sandipan
name: Pedraza, Juan F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We develop an analytic perturbative expansion to study the propagation of entanglement entropy for small subsystems after a global quench, in the context of the AdS/CFT correspondence. Opposite to the large interval limit, in this case the evolution of the system takes place at timescales that are shorter in comparison to the local equilibration scale and thus, different physical mechanisms govern the dynamics and subsequent thermalization. In particular, we show that the heuristic picture in terms of a "entanglement tsunami" does not apply in this regime. We find two crucial differences. First, that the instantaneous rate of growth of the entanglement is not constrained by causality, but rather its time average. And second, that the approach to saturation is always continuous, regardless the shape of the entangling surface. Our analytic expansion also enables us to verify some previous numerical results, namely, that the saturation time is non-monotonic with respect to the chemical potential. All of our results are pertinent to CFTs with a classical gravity dual formulation.
description: 47 pages, multiple figures. v2: minor changes and new references added. To appear in PRD
Oryssomus guyanensis Almeida & Santos, sp. nov.
Creators: name: Almeida, Lúcia M.
name: Santos, Paula B.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Coccinellidae
Oryssomus
Oryssomus guyanensis

description: 7. O. guyanensis Almeida & Santos, sp. nov.
Type material: Holotype, female (MNHN). Type locality: “Montagne de Chevaux, French Guiana ”.
Geographical distribution: French Guiana (Fig. 15).
description: Published as part of Almeida, Lúcia M. & Santos, Paula B., 2014, Synopsis of Oryssomini Gordon (Coleoptera: Coccinellidae) from the Neotropical region with new species of Oryssomus Mulsant, Pseudoryssomus Gordon and Gordonoryssomus Almeida & Lima, pp. 42-68 in Zootaxa 3846 (1) on page 52, DOI: 10.11646/zootaxa.3846.1.2, http://zenodo.org/record/250860
The Elliptic Gaudin Model: a Numerical Study
Creators: name: Esebbag, Carlos
name: Dukelsky, Jorge
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The elliptic Gaudin model describes completely anisotropic spin systems with long range interactions. The model was proven to be quantum integrable by Gaudin and latter the exact solution was found by means of the algebraic Bethe ansatz. In spite of the appealing properties of the model, it has not yet been applied to any physical problem. We here generalize the exact solution to systems with arbitrary spins, and study numerically the behavior of the Bethe roots for a system with three different spins. Then, we propose an integrable anisotropic central spin model that we study numerically for very large systems.
description: 19 pages, 5 figures
Dust Impact Monitor (SESAME-DIM) Measurements at Comet 67P/Churyumov-Gerasimenko
Creators: name: Krüger, Harald
name: Seidensticker, Klaus J.
name: Fischer, Hans-Herbert
name: Albin, Thomas
name: Apathy, Istvan
name: Arnold, Walter
name: Flandes, Alberto
name: Hirn, Attila
name: Kobayashi, Masanori
name: Loose, Alexander
name: Peter, Attila
name: Podolak, Morris
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Rosetta lander Philae successfully landed on the nucleus of comet 67P/Churyumov-Gerasimenko on 12 November 2014. Philae carries the Dust Impact Monitor (DIM) on board, which is part of the Surface Electric Sounding and Acoustic Monitoring Experiment (SESAME). DIM employs piezoelectric PZT sensors to detect impacts by sub-millimeter and millimeter-sized ice and dust particles that are emitted from the nucleus and transported into the cometary coma. The DIM sensor measures dynamical data like flux and the directionality of the impacting particles. Mass and speed of the particles can be constrained assuming density and elastic particle properties. DIM was operated during three mission phases of Philae at the comet: (1) Before Philae's separation from Rosetta at distances of about 9.6 km, 11.8 km, and 25.3 km from the nucleus barycenter. In this mission phase particles released from the nucleus on radial trajectories remained undetectable because of significant obscuration by the structures of Rosetta, and no dust particles were indeed detected. (2) During Philae's descent to its nominal landing site Agilkia, DIM detected one approximately millimeter-sized particle at a distance of 5.0 km from the nucleus' barycenter, corresponding to an altitude of 2.4 km from the surface. This is the closest ever dust detection at a cometary nucleus by a dedicated in-situ dust detector. (3) At Philae's final landing site, Abydos, DIM detected no dust impact which may be due to low cometary activity in the vicinity of Philae, or due to shading by obstacles close to Philae, or both. Laboratory calibration experiments showed that the material properties of the detected particle are compatible with a porous particle having a bulk density of approximately $250\, \mathrm{kg\,m^{-3}}$. The particle could have been lifted off from the comet's surface by sublimating water ice.
description: 17 pages, 5 Tables, 9 Figures, in press, Astronomy & Astrophysics 2015