Plataformas de e-learning no Ensino Superior em Portugal: estado da situação

Citação bibliográfica: Pinheiro, Ana & SILVA, Bento (2004). Plataformas de e-learning no Ensino Superior em Portugal: estado da situação. In Actas da Conferência eLES’04, eLearning no Ensino Superior. Aveiro: Universidade de Aveiro.A presente comunicação é uma primeira abordagem de um estudo mais vasto sobre o estado do e-learning no ensino superior em Portugal. Os autores apre-sentam os resultados de uma recolha exploratória na qual se pretende perceber que es-tabelecimentos de ensino superior português possuem e utilizam uma plataforma e-learning e determinar uma amostra de plataformas a serem analisadas numa parte posterior do estudo. Numa primeira parte desta comunicação aborda-se a metodologia de recolha de dados on-line utilizada. De seguida, analisa-se a informação relativa à caracterização da amostra no que respeita à presença das instituições na Internet e analisa-se a informação sobre as características das plataformas, nomeadamente o tipo e formas de utilização, os aspectos técnicos, administrativos, a construção dos cursos, a facilidade de utilização, a sua dinamização, a avaliação dos alunos e o grau de satis-fação por parte dos utilizadores

The organising principles of the society of Jesus - from the pastorate to governmentality

Foucault’s concepts of Pastoral power and “governmentality” have led to the development of the London school of “governmentalists” (McKinlay and Pezet 2010). However, extant literature on governmentality drawn from this school of thought has undertaken an analytics of power centred on the deployment of governmental forms of power at the State level, not taking into consideration another entity that emerged after modernity, the modern enterprise, and not going beyond the 19th century, thereby trapping “governmentality” studies inside their own modern discourse. Following Foucault’s established relation between Pastoral power and “governmentality”, this thesis analyses the form of organising deployed by an organisation that emerged in the 16th century, apparently being able to survive into modernity without adopting modern managerial business categories. This organisation is the Society of Jesus, commonly known as the Jesuits. The first part of this thesis will analyse the relevance of the Society of Jesus for organisational studies and will show how modern business categories fail to explain its structural resilience. The second part of the thesis introduces Pastoral power as a possible explanation for the apparent structural resilience of the Society of Jesus. Following this line of reasoning, and after having established an analytics of power as a possible methodological framework, the Society of Jesus’ “organising practices” will be presented, leading to the conclusion that this entity, having emerged at the cornerstone of modernity, deployed practices that represent a significant shift when compared with previous Pastoral forms of organising. The fact that the Society of Jesus clearly intended to deploy practices for the conduction of geographicallydispersed individuals leads to the conclusion that it deployed a “protogovernmental” form of power, and that the rationality underpinning its practices, although not entirely modern, is clearly at the cornerstone of modernity and can therefore be enlightening to an understanding of how modern managerial categories might have emerged

Inter-individual Variation in Cancer and Cardiometabolic Health Outcomes in Response to Coffee Consumption : a Critical Review

Funding Sources None declared. Conflict of Interest None declared. Author Contributions E.V. and B.d.R. designed the study. E.V. created the search strategy under the supervision of B.d.R.E.V. and B.d.R. conducted the literature search, evaluated articles, and interpreted the data. E.V. drafted the manuscriptand B.d.R and J.M.G. reviewed and revised the article.Peer reviewedPostprin

A Curvature Principle for the interaction between universes

We propose a Curvature Principle to describe the dynamics of interacting universes in a multi-universe scenario and show, in the context of a simplified model, how interaction drives the cosmological constant of one of the universes toward a vanishingly small value. We also conjecture on how the proposed Curvature Principle suggests a solution for the entropy paradox of a universe where the cosmological constant vanishes.Comment: Essay selected for an honorable mention by the Gravity Research Foundation, 2007. Plain latex, 8 page

Instabilities in neutrino-plasma density waves

One examines the interaction and possible resonances between supernova neutrinos and electron plasma waves. The neutrino phase space distribution and its boundary regions are analyzed in detail. It is shown that the boundary regions are too wide to produce non-linear resonant effects. The growth or damping rates induced by neutrinos are always proportional to the neutrino flux and $G_{{\rm F}}^{2}$.Comment: 9 pages, a few words modified to match PRD publicatio

Estudo histopatológico de lesões ateroscleróticas em suínos de raça Alentejana.

Neste trabalho experimental procedeu-se à medição da espessura e à caracterização histológica de lesões ateroscleróticas, em suínos de raça Alentejana, procurando-se estabelecer uma relação entre estas e os valores dos parâmetros sanguíneos associados ao desenvolvimento deste processo patológico. As concentrações plasmáticas de triacilgliceróis, fosfolípidos, colesterol total, colesterol livre, LDLc e HDLc foram determinadas por métodos enzimáticos. Foram também feitas análises histopatológicas a amostras da artéria coronária esquerda. Os animais foram divididos em 2 grupos de 6 indivíduos cada: Grupo I, com elevada colesterolémia (4,25 mmol/L) e Grupo II, com níveis normais (2,53 mmol/L). Os valores do ganho médio diário (GMD) dos dois grupos foram semelhantes. Os animais do Grupo apresentaram valores significativamente mais elevados (P≤0,001) para: colesterol total, colesterol livre, colesterol esterificado e LDLc. A área de lesão foi significativamente superior (P≤0,05) no Grupo I. Verificou-se uma relação linear entre a área de lesão (fases iniciais do tipo I e II) e os teores plasmáticos de colesterol total, de LDLc e de colesterol livre, o que sugere a influência destes parâmetros na dimensão da área de lesão. Os resultados deste trabalho sugerem que os suínos de raça Alentejana podem desenvolver lesões ateroscleróticas ao longo do seu ciclo de vida, tal como o observado em humanos e outras raças de suínos. Estas lesões estão associadas a hipercolesterolemia que poderão ser devidas a mutações genéticas em apolipoproteínas, sistemas enzimáticos ou receptores. São necessários estudos futuros, quer a nível histológico quer a nível de biologia molecular, para um maior aprofundamento do conhecimento das lesões ateroscleróticas em suínos de raça Alentejana. The present study aimed to assess the histopathological characterization of atherosclerotic lesions in Alentejano pigs, and to evaluate the relationship between several blood parameters and lesions development. Histomorphometric determinations of atherosclerotic lesions were performed on the left coronary artery and plasmatic levels of triacylglycerols, phospholipids, and of total, free, LDL and HDL cholesterol were measured by enzymatic methods. Pigs were assigned to two groups (n=6): Group I, with hypercholesterolemic pigs (4,25 mmol/L), and Group II, with normocholesterolemic ones (2,53 mmol/L). Average daily gain was similar in both groups. Plasmatic levels of total, free, esterified and LDL cholesterol were significantly higher (P≤0,001) in Group I. The atherosclerotic lesion area was significantly higher (P≤0,05) in the same group. Linear correlations between atherosclerotic lesion area (in initial Phases I and II) and plasmatic levels of total, free and LDL cholesterol were observed. The results of this study suggest that the Alentejano pig, like humans and other swine, may develop atherosclerotic lesions during its life cycle. Such lesions, associated with hypercholesterolemia, may be due to genetic mutations in apolipoproteins, lipid enzymes or receptor genes. Further studies on molecular genetics and on hysthopathology of this type of atherosclerostic lesion, in Alentejano pigs are required

Role of Modified Chaplygin Gas as a Dark Energy Model in Collapsing Spherically Symmetric Cloud

In this work, gravitational collapse of a spherical cloud, consists of both dark matter and dark energy in the form of modified Chaplygin gas is studied. It is found that dark energy alone in the form of modified Chaplygin gas forms black hole. Also when both components of the fluid are present then the collapse favors the formation of black hole in cases the dark energy dominates over dark matter. The conclusion is totally opposite to the usually known results.Comment: 7 Latex Pages, RexTex style, No figure

Low-Complexity Equalisers for Offset Constellations in Massive MIMO Schemes

This work was supported in part by the European Regional Development Fund (FEDER), through the Competitiveness and Internationalization Operational Program of the Portugal 2020 Framework, in part by the Regional OP Centro under Grant POCI-01-0145-FEDER-030588, in part by the Regional OP Lisboa under Grant Lisboa-01-0145-FEDER-03058, in part by the FCT/MEC through national funds of MASSIVE5G Project under Grant SAICT-45-2017-02 and PES3N Project under Grant 2018-SAICT-45-2017-POCI-01-0145-FEDER-030629, in part by the UID/EEE/50008/2019 Project, and in part by the FCT Ph.D. under Grant SFRH/BD/108522/2015.Massive multi-input-multi-output (m-MIMO) schemes require low-complexity implementations at both the transmitter and the receiver side, especially for systems operation at millimeter wave (mmWave) bands. In this paper, we consider the use of offset constellations in m-MIMO systems operating at mmWave frequencies. These signals are designed to have either an almost constant envelope or be decomposed as the sum of constant-envelope signals, making them compatible with strongly nonlinear power amplifiers, which can have low-implementation complexity and high amplification efficient, making them particularly interesting for mmWave communications. We design and evaluate low-complexity frequency-domain receivers for offset signals. It is shown that the proposed receivers can have excellent performance/complexity trade-offs in m-MIMO scenarios, making them particularly interesting for future wireless systems operating at mmWave bands.publishersversionpublishe

Prognóstico após Paragem Cardio-Respiratória em Doentes Submetidos a Hipotermia Terapêutica: Factores Clínicos, Electrofisiológicos e Imagiológicos

INTRODUCTION: Predicting outcome in comatose survivors of cardiac arrest is based on data validated by guidelines that were established before the era of therapeutic hypothermia. We sought to evaluate the predictive value of clinical, electrophysiological and imaging data on patients submitted to therapeutic hypothermia. MATERIALS AND METHODS: A retrospective analysis of consecutive patients receiving therapeutic hypothermia during years 2010 and 2011 was made. Neurological examination, somatosensory evoked potentials, auditory evoked potentials, electroencephalography and brain magnetic resonance imaging were obtained during the first 72 hours. Glasgow Outcome Scale at 6 months, dichotomized into bad outcome (grades 1 and 2) and good outcome (grades 3, 4 and 5), was defined as the primary outcome. RESULTS: A total of 26 patients were studied. Absent pupillary light reflex, absent corneal and oculocephalic reflexes, absent N20 responses on evoked potentials and myoclonic status epilepticus showed no false-positives in predicting bad outcome. A malignant electroencephalographic pattern was also associated with a bad outcome (p = 0.05), with no false-positives. Two patients with a good outcome showed motor responses no better than extension (false-positive rate of 25%, p = 0.008) within 72 hours, both of them requiring prolonged sedation. Imaging findings of brain ischemia did not correlate with outcome. DISCUSSION: Absent pupillary, corneal and oculocephalic reflexes, absent N20 responses and a malignant electroencephalographic pattern all remain accurate predictors of poor outcome in cardiac arrest patients submitted to therapeutic hypothermia. CONCLUSION: Prolonged sedation beyond the hypothermia period may confound prediction strength of motor responses