Percorrer por autor "Rosa, Manuel"
A mostrar 1 - 4 de 4
Resultados por página
Opções de ordenação
- Análise de RiscoPublication . Rosa, ManuelEste trabalho representa o resultado de uma reflexão sobre o tema da gestão do risco. O seu objectivo consiste em fazer uma análise da integração da gestão do risco no processo de tomada de decisão, contribuindo para o levantamento das necessidades que se colocam à sua eventual aplicação a todos os sectores de actividade do Exército. Com uma abordagem em que aceitamos o desafio de combinar os conhecimentos do comportamento humano com os da teoria da decisão, procuramos demonstrar a importância da análise de risco como ferramenta de apoio à tomada de decisão e dar resposta à questão central por nós levantada. De uma forma simples, a gestão do risco é apresentada como um processo racional e estruturado de apoio à tomada de decisão, usado em todos os níveis e actividades da organização, com a finalidade de reduzir e controlar os riscos que se colocam a uma determinada missão, permitindo que esta possa ser cumprida com um mínimo de perdas ou danos. Pareceu-nos lógico adoptar uma aproximação sociocognitiva para descrever o processo de gestão do risco, partindo da ideia básica de risco, da sua percepção e da sua aceitação. Esta aproximação incluiu factores diversificados, de nível organizacional e cultural para a definição do problema, de contexto e da personalidade do decisor para avaliação e aceitação do risco. Procuramos também salientar que a gestão de risco é, para além da competência técnica, uma qualidade humana e, para além de um saber-fazer, um saber-estar. De seguida, com o intuito de identificar as estruturas e metodologias de gestão do risco utilizadas noutras organizações, estudámos os modelos de gestão de risco do Exército dos Estados Unidos da América e da Força Aérea Portuguesa. Conscientes que o critério mais importante da demarcação científica é a objectivação, e de maneira a obter a percepção o mais correcta possível dos factos e do seu contexto, aplicámos um inquérito para analisar o “estado da arte” da gestão do risco no Exército Português. Concluímos que para além da necessária uniformização da terminologia e das definições associadas à gestão do risco, são necessárias medidas que possibilitem a organização de uma estrutura de suporte que sirva de apoio aos decisores militares, bem como a difusão de uma metodologia adequada. Abstract: This project is the result of a study on the subject of risk management. Its objective is to analyse the incorporation of risk management in the decision-making process, thus contributing towards an overview of the needs related to its possible application in all sectors of Army activity. We have accepted the risk of adopting an approach which combines knowledge from the fields of both human behaviour and decision theory, and have sought to demonstrate the importance of risk assessment as a support tool for decision-making, as well as to provide an answer for the main issue raised by ourselves. Put simply, risk management is presented as a rational and structured support process for decision-making, and is used at all levels and in all activities of the organisation, in order to minimise and control risks related to a certain mission, thus allowing said mission to be accomplished with minimum loss or damage. It seemed logical to adopt a sociocognitive approach to describe the risk management process, centred on the basic idea of risk, its perception and acceptance. This approach includes organisational and cultural factors in problem definition, as well as factors related to context and to the personality of the decision-maker for the evaluation and acceptance of the risk. We have also sought to emphasise that, besides being a technical skill, risk management is also a human quality, and that in addition to know-how, it is also ‘knowing-how-to-be’. Subsequently, with the aim of identifying risk management structures and methodologies used in other organisations, we studied risk management models in both the United States Army and the Portuguese Air Force. Aware that objectivation is the most important criterion in scientific demarcation, and in order to obtain as accurate an understanding as possible of the facts and respective context, we carried out a survey to analyse “the art” of risk management in the Portuguese Army. We concluded that, apart from the necessary standardisation of terminology and definitions associated to risk management, it is also necessary to implement measures that allow for the diffusion of risk management methodology, as well as the organisation of a support structure for military decision-makers.
- Participation of students in the project Valorbio: A case study to accelerate the implementation of sustainability principles in the curriculumPublication . Mateus, D. M. R.; Pinho, Henrique J. O.; Nogueira, Isabel; Rosa, Manuel; Cartaxo, Marco; Nunes, ValentimPurpose – The present work describes the case of the Valorbio research project, in which students of different high-level programs were involved in the experimental work and in the dissemination of results in collaboration with the research team. Design/methodology/approach – The inclusion in higher education curricula of content related to the sustainable development should be a preferred mechanism for the dissemination of good practices of sustainability. Another equally important way to achieve this is to involve students in research projects that seek solutions to the societal challenges related to sustainable growth. The Valorbio project aims to meet the needs for treating and reusing wastewater and solid waste. Its main goal was the development of modular systems for wastewater treatment based on constructed wetlands,exploring the possibility of the treatment systems being composed of solid waste and by-products from significant industrial sectors. Findings – The students’ contributionto the research workwas relevant, and simultaneously allowedthem to acquire skills on sustainable development. Additionally, the students contributed to the dissemination of the results. The Valorbio project can thus be considered a successful application of the concept of project-based learning,as a way to include sustainability issues content in the higher education curricula. Originality/value – The applied experimental work had an original approach regarding the equipment design, the waste materials valuation, as well as the integration of waste treatment processes in the circular economy paradigm.This paper is the first reported project-based learning experience involving students of short-cycle technical-professional programs in partnership with first and second-level students and a research team.
- Portuguese Hemp Plant as Raw Material for PapermakingPublication . Baptista, C.; Santos, Natércia; Rosa, ManuelThe objectives of this study were the physical and chemical characterization of Portuguese industrial hemp and the assessment of its suitability to produce kraft pulp. A comparison was established with a reference eucalyptus pulp, obtained by the same chemical process. Handmade paper sheets were prepared in the laboratory using hemp pulp, eucalyptus pulp and a blend of both fibres in order to compare final paper properties. The unbleached pulp was produced by batch kraft cooking (NaOH + Na2S) and the evaluation of pulp bleachability was carried out under a D0E0D1E1D2 sequence. The physical properties of laboratory papers prepared with different compositions (100% hemp, 100% eucalyptus, hemp/eucalyptus 50:50) were assessed according to International Standards. Hemp fibres present two fractions, bast and core (33% and 67% of the total stem mass, respectively) with distinct biometric characteristics and cell composition. The hemp plant allowed cooking yield overlapping the wood reference, with lesser uncooked fractions. The pulp exhibited a good bleachability, even better than the reference. Hemp plant allowed a pulp with a higher gain of brightness and lower loss of intrinsic viscosity than eucalyptus. Hemp pulp also showed a better beatability, superiority in tearing resistance and a lower air permeability. The paper sheets obtained with the hemp/ eucalyptus mixture showed interesting properties, which predicts a suitable combination of these two raw materials for papermaking.
- Solid Waste Valorisation for Wastewater Treatment ProcessesPublication . Cartaxo, Marco; Rosa, Manuel; Nogueira, Isabel; Nunes, Valentim; Pinho, Henrique J. O.; Mateus, D. M. R.The present work was part of a research project, which pursued the treatment and reuse of urban and industrial wastewaters as well as solid waste. Its main goal was the development of modular systems for wastewater treatment based on constructed wetlands (CWs). The project involves the concept of circular economy and the rationale of "using waste to treat waste", exploring the possibility of the treatment systems being composed of solid waste and by-products from significant industrial sectors. The work thereof presented describes the physical and chemical characterization of five waste solids, which were used as lab-scale fillers. Optical microscopy observations, μFRX and FTIR-ATR analyses were conducted to characterize the solid wastes before and after use in the CWs treating urban type wastewater. Results indicated that, among the five solid wastes studied, limestone fragments from construction showed favorable conditions to biofilm growth, and coal slags from power plants and cork granulates showed the highest indication of adsorption of organic compounds.