Web 2.0 and its impact on knowledge and business organizations

Today, information overload and the lack of systems that enable locating employees with the right knowledge or skills are common challenges that large organisations face. This makes knowledge workers to re-invent the wheel and have problems to retrieve information from both internal and external resources. In addition, information is dynamically changing and ownership of data is moving from corporations to the individuals. However, there is a set of web based tools that may cause a major progress in the way people collaborate and share their knowledge. This article aims to analyse the impact of ‘Web 2.0’ on organisational knowledge strategies. A comprehensive literature review was done to present the academic background followed by a review of current ‘Web 2.0’ technologies and assessment of their strengths and weaknesses. As the framework of this study is oriented to business applications, the characteristics of the involved segments and tools were reviewed from an organisational point of view. Moreover, the ‘Enterprise 2.0’ paradigm does not only imply tools but also changes the way people collaborate, the way the work is done (processes) and finally impacts on other technologies. Finally, gaps in the literature in this area are outlined.

Prostituição feminina de rua : escutar e atuar: papel do técnico d’O Ninho na intervenção com mulheres prostitutas

O Ninho é uma Associação que procura o conhecimento real do fenómeno prostituição, do próprio meio e dos seus agentes, bem como garantir qualidade na intervenção técnica e nas respostas sociais. Assim, o trabalho desenvolvido pelos técnicos objetiva responder aos problemas identificados pelas mulheres prostitutas e colmatar as lacunas nas respostas existentes no que concerne ao fenómeno social prostituição feminina de rua. Este estudo pretende ir ao encontro da maior preocupação associada a esta problemática e, mais especificamente, no caso da prostituição feminina de rua – a preocupação com a inserção social das mulheres. Para a elaboração do presente trabalho foram utilizadas estratégias metodológicas como a observação participante e entrevistas semiestruturadas. Da análise dos resultados verificamos que a prostituição agudiza os estereótipos, preconceitos e o estigma social que tanto marginaliza as mulheres prostituídas. Assim, todo o trabalho técnico realizado n’O Ninho visa promover a autonomia das mulheres, a aquisição de regras e hábitos de trabalho, o cumprimento e definição de objetivos e a posterior procura de emprego. - ABSTRACT O Ninho is an association that seeks the real knowledge of the phenomenon prostitution, of the environment and their agents, as well as ensure quality in technical intervention and social responses. Thus, the work done by the technicians aims to respond to the problems identified by the prostitutes and fill the gaps in the existing responses, concerning to the social phenomenon female prostitution of street. This study intends to respond to the main concern associated with this issue and, more specifically, in the case of female street prostitution – the concern with social inclusion of women. For the preparation of this work, as methodological strategies, we used the participant observation and semi-structured interviews. By the analysis of the results we found that prostitution exacerbates the stereotypes, prejudices and the social stigma that marginalize women forced into prostitution. Thus, all the technical work done at O Ninho aims to promote women's autonomy, rules and work habits acquisition, setting goals and subsequent job search.

Phase diagrams of binary mixtures of patchy colloids with distinct numbers and types of patches: Theempty fluid regime

We investigate the effect of distinct bonding energies on the onset of criticality of low functionality fluid mixtures. We focus on mixtures ofparticles with two and three patches as this includes the mixture where "empty" fluids were originally reported. In addition to the number of patches, thespecies differ in the type of patches or bonding sites. For simplicity, we consider that the patches on each species are identical: one species has threepatches of type A and the other has two patches of type B. We have found a rich phase behavior with closed miscibility gaps, liquid-liquid demixing, and negative azeotropes. Liquid-liquid demixing was found to pre-empt the "empty" fluid regime, of these mixtures, when the AB bonds are weaker than the AA or BB bonds. By contrast, mixtures in this class exhibit "empty" fluid behavior when the AB bonds are stronger than at least one of the other two. Mixtureswith bonding energies epsilon(BB) = epsilon(AB) and epsilon(AA) < epsilon(BB), were found to exhibit an unusual negative azeotrope. (C) 2011 American Institute of Physics. [doi:10.1063/1.3561396]

Dinâmicas e relações intra-organizacionais nos cuidados às crianças / adolescentes com diabetes mellitus tipo 1

Mestrado em Intervenção Sócio-Organizacional na Saúde. Área de especialização: Políticas de Administração e Gestão dos Serviços de Saúde.

Otimização do co-registo metabolismo-morfologia em estudos de PET/CT com 18F-DG de nódulos pulmonares: comparação de dois protocolos - 4D vs CT lento

Mestrado em Medicina Nuclear - Área de especialização: Tomografia por Emissão de Positrões.

Simulation of the Magnetic Induction Vector of a Magnetic Core to be Used in FFC NMR Relaxometry

This paper is a contribution for the assessment and comparison of magnet properties based on magnetic field characteristics particularly concerning the magnetic induction uniformity in the air gaps. For this aim, a solver was developed and implemented to determine the magnetic field of a magnetic core to be used in Fast Field Cycling (FFC) Nuclear Magnetic Resonance (NMR) relaxometry. The electromagnetic field computation is based on a 2D finite-element method (FEM) using both the scalar and the vector potential formulation. Results for the magnetic field lines and the magnetic induction vector in the air gap are presented. The target magnetic induction is 0.2 T, which is a typical requirement of the FFC NMR technique, which can be achieved with a magnetic core based on permanent magnets or coils. In addition, this application requires high magnetic induction uniformity. To achieve this goal, a solution including superconducting pieces is analyzed. Results are compared with a different FEM program.

Phase growth control in low temperature PLD Co: TiO2 films by pressure

This paper reports on the structural and optical properties of Co-doped TiO2 thin films grown onto (0001)Al2O3 substrates by non-reactive pulsed laser deposition (PLD) using argon as buffer gas. It is shown that by keeping constant the substrate temperature at as low as 310 degrees C and varying only the background gas pressure between 7 Pa and 70 Pa, it is possible to grow either epitaxial rutile or pure anatase thin films, as well as films with a mixture of both polymorphs. The optical band gaps of the films are red shifted in comparison with the values usually reported for undoped TiO2, which is consistent with n-type doping of the TiO2 matrix. Such band gap red shift brings the absorption edge of the Co-doped TiO2 films into the visible region, which might favour their photocatalytic activity. Furthermore, the band gap red shift depends on the films' phase composition, increasing with the increase of the Urbach energy for increasing rutile content. (C) 2012 Elsevier B.V. All rights reserved.

Optoelectronic properties of a-Si(1-x)C(x)H films grown in hydrogen diluted silane-methane plasma

This work reports on the optoelectronic properties and device application of hydrogenated amorphous silicon carbide (a-Si(1-x)C(x):H) films grown by plasma-enhanced chemical vapour deposition (PECVD). The films with an optical bandgap ranging from about 1.8 to 2.0 eV were deposited in hydrogen diluted silane-methane plasma by varying the radio frequency power. Several n-i-p structures with an intrinsic a-Si(1-x)C(x):H layer of different optical gaps were also fabricated. The optimized devices exhibited a diode ideality factor of 1.4-1.8, and a leakage current of 190-470 pA/cm(2) at -5 V. The density of deep defect states in a-Si(1-x)C(x):H was estimated from the transient dark current measurements and correlated with the optical bandgap and carbon content. Urbach energies for the valence band tail were also determined by analyzing the spectral response within sub-bandgap energy range. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Percursos de vida profissional: da formação inicial à entrada na carreira

Dissertação apresentada à Escola Superior de Educação de Lisboa para a obtenção do Grau de Mestre em Ciências da Educação - especialidade Supervisão em Educação

Comunicação na saúde: a consulta do viajante no IHMT

O presente trabalho, é um Relatório de Estágio onde se descrevem as actividades desenvolvidas ao longo do Estágio Curricular realizado no Instituto de Higiene e Medicina Tropical (IHMT) no período de 5 de Novembro de 2012 a 8 de Março de 2013. Pretendeu-se aliar o estudo da teoria ao desenvolvimento de algumas acções de comunicação que colmatassem falhas detectadas durante a auditoria à comunicação. O Relatório de Estágio, aqui apresentado, divide-se em duas secções: a investigação e o desenvolvimento dos instrumentos de comunicação. Estas duas secções encontram-se intimamente ligadas pois, a investigação efectuada teve como principal objectivo a obtenção de dados que permitissem caracterizar o público da Consulta do Viajante do IHMT de modo a que fosse possível a alteração e/ou criação de suportes de comunicação adaptados às características – escolares, sociais, demográficas, profissionais, etc. – desse público. Desta forma, e após pesquisa bibliográfica sobre temas pertinentes para o trabalho como Medicina do Viajante, Comunicação em e para a Saúde, Metodologias de Investigação, entre outras tidas como necessárias, foi realizada uma investigação por questionário aos utentes do IHMT que permitiu o desenvolvimento do trabalho final de estágio. A investigação e consequente desenvolvimento dos suportes de comunicação são apresentados neste relatório que se pretende reflexivo sobre as práticas desenvolvidas.

Sistemas de informação ao público nos transportes públicos de passageiros: análise crítica

Dissertação para obtenção do grau de Mestre em Engenharia na Área de especialização em Vias de Comunicação e Transportes

Toxicology of metals and metalloids

Metal toxicology is one of the oldest areas of study of toxicology and one of the oldest environmental problems. Metals and metalloids are toxic elements at the top of the priority list of hazardous substances of the Agency for Toxic Substances and Disease Registry (ATSDR). However, several gaps of knowledge still exist that are related to their toxicity, mainly concerning the mechanisms of action. This special issue affords the opportunity to bring together the results of nine papers covering several aspects of the toxicology of metals and metalloids in in vitro and in vivo experimental models, as well as in exposed populations.

Foam as a geometer

Foams are found everywhere: in nature, in technology, in our home. They are examples of cellular materials: assemblies or clusters of cells (from Latin cella: a small compartment or enclosed region) packed together so that they fill space without gaps. Foams come in different kinds. Ordinary liquid foam is an experimental system that solves some difficult geometry problems.

Synthesis and properties of Co-doped titanate nanotubes and their optical sensitization with methylene blue

Agência Financiadora - Fundação para a Ciência e Tecnologia - PTDC/CTM NAN/113021/2009

Como se aprende no jardim-de-infância utilizando o modelo do Movimento da Escola Moderna

Relatório da Prática Profissional Supervisionada Mestrado em Educação Pré-Escolar