Validação de design de armazém automatizado com uso de simulação discreta

Dissertação de mestrado em Engenharia de Sistemas

Desenvolvimento de estruturas fibrosas com comportamento auxético

Tese de Doutoramento Engenharia Têxtil

Project management under uncertainty: a study on solution methods

Project Management involves onetime endeavors that demand for getting it right the first time. On the other hand, project scheduling, being one of the most modeled project management process stages, still faces a wide gap from theory to practice. Demanding computational models and their consequent call for simplification, divert the implementation of such models in project management tools from the actual day to day project management process. Special focus is being made to the robustness of the generated project schedules facing the omnipresence of uncertainty. An "easy" way out is to add, more or less cleverly calculated, time buffers that always result in project duration increase and correspondingly, in cost. A better approach to deal with uncertainty seems to be to explore slack that might be present in a given project schedule, a fortiori when a non-optimal schedule is used. The combination of such approach to recent advances in modeling resource allocation and scheduling techniques to cope with the increasing flexibility in resources, as can be expressed in "Flexible Resource Constraint Project Scheduling Problem" (FRCPSP) formulations, should be a promising line of research to generate more adequate project management tools. In reality, this approach has been frequently used, by project managers in an ad-hoc way.

Solving large 0–1 multidimensional knapsack problems by a new simplified binary artificial fish swarm algorithm

The artificial fish swarm algorithm has recently been emerged in continuous global optimization. It uses points of a population in space to identify the position of fish in the school. Many real-world optimization problems are described by 0-1 multidimensional knapsack problems that are NP-hard. In the last decades several exact as well as heuristic methods have been proposed for solving these problems. In this paper, a new simpli ed binary version of the artificial fish swarm algorithm is presented, where a point/ fish is represented by a binary string of 0/1 bits. Trial points are created by using crossover and mutation in the different fi sh behavior that are randomly selected by using two user de ned probability values. In order to make the points feasible the presented algorithm uses a random heuristic drop item procedure followed by an add item procedure aiming to increase the profit throughout the adding of more items in the knapsack. A cyclic reinitialization of 50% of the population, and a simple local search that allows the progress of a small percentage of points towards optimality and after that refines the best point in the population greatly improve the quality of the solutions. The presented method is tested on a set of benchmark instances and a comparison with other methods available in literature is shown. The comparison shows that the proposed method can be an alternative method for solving these problems.

Análise estratégica da internacionalização da APFF- Administração do Porto da Figueira da Foz

Relatório de estágio de mestrado em Negócios Internacionais

A mensuração do Capital Humano nas organizações: estudo de caso da empresa Tuacar, SA

Relatório de estágio de mestrado em Contabilidade

Estudos da criança e pesquisa com crianças: nuances luso-brasileiras acerca dos desafios éticos e metodológicos

O presente artigo discute as maneiras como os Estudos da Criança colaboram com as novas formas de se pensarem as crianças e as infâncias, afirmando que os conceitos de criança como ator social, como sujeito com direitos, participativo e com voz, passam a ter uma visibilidade significativa na pesquisa com crianças, nos discursos acadêmicos e também em muitas práticas sociais com crianças. Questionamos ao longo do texto alguns aspectos que têm vindo a merecer uma atenção acrescida nos últimos tempos, nomeadamente os relacionados com os preceitos éticos que envolvem a pesquisa com crianças tentando pensar de que modo podem concretizar-se numa ética viável e significativa para as crianças, nas pesquisas com crianças desenvolvidas no Brasil e em Portugal. Fechamos o texto com a convicção de que somente ouvindo e escutando o que as crianças tem a nos dizer sobre os seus modos de vida poderemos acrescentar ao conhecimento sobre a infância elementos inovadores e respeitadores da imagem da criança como sujeito ativo de direitos. Somente desta forma conseguiremos enfrentar as exigências de colocar em discussão todo e qualquer direito das crianças na pesquisa em debates mais extensos de ampliação da cidadania.

Implementação de ferramentas Lean numa empresa de componentes para calçado

Dissertação de mestrado em Engenharia Industrial

Reconfiguração e novas funcionalidades para um servidor REST ONVIF: serviço de IO e configuração de descoberta

Dissertação de mestrado em Engenharia de Telecomunicações e Informática

Desenvolvimento e implementação de ações de melhoria num ambiente Lean Office

Dissertação de mestrado em Engenharia Industrial

Análise e melhoria da produtividade numa empresa do sector de componentes de automóveis

Dissertação de mestrado integrado em Engenharia e Gestão Industrial

Aplicação de ferramentas Lean e gestão da manutenção numa metalomecânica

Dissertação de mestrado em Engenharia e Gestão da Qualidade

Análise de tempos e métodos e implementação de ferramentas lean num sistema produtivo

Dissertação de mestrado em Engenharia Industrial

Evolving hallmarks in urothelial bladder cancer: unveiling potential biomarkers

Urothelial bladder carcinoma (UBC), the most frequent type (90%) of bladder cancer and the second most common malignancy of the urogenital region, is a relatively well understood type of cancer, with numerous studies concerning pathogenetic pathways, natural history and bladder tumor biology being reported. Despite this, it continues to remain a challenge in the oncology field, mostly due to its relapsing and progressive nature, and to the heterogeneity in the response to cisplatin-containing regimens. Although the formulae based on clinical staging and histopathological parameters are classically used as diagnostic and prognostic tools, they have proven insufficient to characterize the individual biological features and clinical behaviour of the tumours. Understanding the pathobiology of the disease can add important information to these classical criteria, and contribute to accurately predict outcome and individualize therapy for UBC patients. In this line of investigation, we found that tumour angiogenesis and lymphangiogenesis, the process of invasion and metastasis and the energy metabolism reprogramming/tumour microenvironment encompass several potential biomarkers that seem to infl bladder cancer aggressiveness and chemoresistance. We particularly highlight the roles of lymphovascular invasion, and of RKIP, CD147 and MCT1 immunoexpressions, as relevant prognostic and/or predictive biomarkers, and as promising areas of therapeutic intervention, eliciting for the development of additional studies that can validate and further explore these biomarkers.

Introduction [to] Gypsy economy

‘Gypsy economy’ is a conceptual fiction as well as a matter of lived experience. First, it heuristically stabilises analytical focus on diverse economic practices of those traditionally labelled by states majorities as ‘Gypsies’ (Roma, Sinti, Travellers, peoples that identify as Gypsies, and so on). Second, it is a condensed image that makes visible recent changes in the relationship between the society, the state and the market. Ethnographic studies of Romani communities that have experienced marginalisation in relation to the dominant work ethics, informal employment and precarity for generations, but who nevertheless face their situation with self-determination and creativity that they find meaningful, therefore promises to add to the ways of thinking about human economy under the latest capitalism.