Q-Andrew: a consolidated QOS management framework

Tese de mestrado em Segurança Informática, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2008As redes IP convergentes são compostas por uma diversidade de tecnologias que suportam múltiplos tipos de serviços com diferentes características. Cada fabricante de equipamento activo de rede usa sistemas de manutenção proprietários, incompatíveis com equipamentos de outros fabricantes. Para um operador de telecomunicações a gestão da Qualidade de Serviço, numa rede composta por vários fabricantes, é uma tarefa complexa e dispendiosa. Algumas tarefas requerem configuração manual para garantir a compatibilidade entre configurações de equipamentos de fabricantes diferentes. Melhorar a resposta operacional e reduzir os custos de operação nestas circunstâncias é apenas possível com a consolidação da gestão de rede. Para responder a este desafio, propomos: Um conjunto de mecanismos geradores de configurações de Qualidade de Serviço, consistentes entre equipamentos de diversos fabricantes; A definição de um modelo abstracto de representação destas configurações, reutilizável em futuras aproximações de gestão consolidada de rede; Por fim, descrevemos uma aplicação de demonstração onde algumas das propostas apresentadas são concretizadas, tendo como objectivo futuro a sua utilização numa rede real de um operador de telecomunicações nacional, onde são utilizados equipamentos de diversos fabricantes.Converged IP networks consist of diverse technologies and support both legacy and emerging services. Different vendors use separate management systems to achieve similar goals. Manual provisioning today represents a large portion of the total effort required to manage a complex IP network. A consolidated Quality-of-Service policy is difficult to implement in heterogeneous networks. Creating and maintaining such policies is very demanding in terms of operations. For this reason, reducing operational costs while improving Quality-of-Service Management is only possible through a consolidated approach to network management. To leverage operations in converged IP networks, we propose the following: A mechanism to automatically generate consistent configurations across a network with equipment from different vendors; A framework definition such that network element configurations can be specified using a common model; Applying some of the methods proposed to an application that can be used in a real network with diverse technologies and equipment vendors

Ways of engaging. Re-assessing effects of the relationship between landscape architecture and art in community involvement and design practice

Doutoramento em Arquitectura Paisagista e Ecologia Urbana - Instituto Superior de Agronomia / Faculdade de Ciências. Universidade do Porto / faculdade de Ciências e Tecnologia. Universidade de CoimbraIn 2000, the European Landscape Convention has introduced and highlighted a number of key points which intended to renew the ways of approaching the landscape, also covering the subjects of public participation or the diversity of disciplinary articulations — for example, a greater concern was expressed about the places where people live, such as urban and periurban areas; the public should have an active role and responsibility as well as awareness raising, training and education through an enhanced part in participation actions; crossdisciplinary and more diversity on the approaches related to landscape matters are needed. It was from this context that this investigation was developed, proposing a different perspective of analysis between landscape architecture and art, that is: on the one hand, it was intended to address the current challenges related to the public engagement and participation taking into account the long experience of the art practices in participatory projects; on the other hand, it was intended to contribute to a better clarification on how different disciplines such as landscape architecture and art address similar themes and concerns, and how this can contribute to more efficient design practices and diversified collaborations. Thus, different approaches were analyzed and discussed, produced from temporary projects carried out by artists or by different collaborations between art, landscape architecture and other disciplines, in order to contribute not only to more efficient and inclusive design practices, but also to improve engagement processes between the public, the design team and the project. The aim is to reinforce a more active role of the public that may translate into responsibility as well as in awareness raising, training, and education, mainly referring to the specific context of the urban landscapeN/

Improved PWM A/D conversion technique: working principle and model validation

Analog-to-digital conversion plays a central role in any application of digital sensors and sensor systems that require an interface between analog devices, namely analog sensors, and digital devices, namely, microprocessors, digital signal processors or microcontrollers. With the advent of smart sensing, the integration of signal conditioning, analog-to-digital and digital data processing in single hardware devices became a reality. Moreover, the usage of low-cost discrete A/D conversion techniques for applications that are not critic in terms of accuracy, resolution or conversion rate, are considering increasingly mixed hardware and software A/D solutions tailored for specific application demands. In this context, this chapter presents a discrete low-cost A/D conversion solution based on pulse width modulation particularly suited for microcontrollers' integration with smart sensing devices.info:eu-repo/semantics/publishedVersio

Failure factors of technological driven start-ups: datris solutions case study

Dissertação de mestrado em International BusinessThis internship report reflects the status and evolution of the technological driven start-up, Datris Solutions, which is a start-up focused on exploring opportunities in the open data and membership management applications sectors. Datris was created in 2015 and presently, in 2018 has yet to release a finished product that can be used to generate revenue. Continuous issues afflict the development of the start-up’s team and products which resulted in the slow progress and evolution of the two. In an attempt to pump fresh ideas and motivation into the current start-up’s team members, additional personal was hired, in this case a marketing research intern to assist the team in every marketing related effort with special focus for marketing research. This created the adequate scenery for an internship in the area of International Business since it allowed a look into the development and evolution of a young technological driven startup in a foreign country. The knowledge gained during the regular theoretical modules of the International Business masters classes provided the necessary tools to assess an international business/start-up health and the insight to provide advice on what would be the best suggestions to increase the start-up’s productivity, development and how to develop an accurate market research. With that in mind, this internship report will focus on assessing the current factors that are inhibiting the development and growth potential of technological driven start-ups. By identifying, analysing and comparing them to the literature research findings regarding failure factors that inhibit technological start-up development, we hope to contribute to the current literature. In addition, we will suggest an action plan to reduce the influence of these negative factors to ensure a better survivability rate for the start-up for the years to come.Este relatório de estágio reflete o status e a evolução da start-up tecnologicamente orientada, Datris Solutions, que é uma start-up focada na exploração de oportunidades nos setores de aplicativos abertos de gerenciamento de dados e de membros. A Datris foi criada em 2015 e atualmente, em 2018, ainda não lançou um produto acabado que pode ser usado para gerar receita. Problemas contínuos afligem o desenvolvimento da equipa e dos produtos da startup, que resultaram no lento progresso e evolução dos dois. Na tentativa de impulsionar novas ideias e motivação para os atuais membros da equipa da start-up, foi contratado um membro adicional, neste caso um estagiário de marketing para auxiliar a equipa em todos os esforços relacionados ao marketing com foco especial para pesquisa de marketing. Isso criou o cenário adequado para um estágio na área de Negócios Internacionais, uma vez que permitiu analisar o desenvolvimento e a evolução de uma jovem startup tecnológica num país estrangeiro. Os conhecimentos adquiridos durante os módulos teóricos regulares das aulas de Mestrado em Negócios Internacionais forneceram as ferramentas necessárias para avaliar a saúde de uma empresa internacional / start-up e a visão para fornecer conselhos sobre quais seriam as melhores sugestões para aumentar a produtividade, desenvolvimento e desenvolvimento. e como desenvolver uma pesquisa de mercado precisa. Com isso em mente, este relatório de estágio será concentrado na avaliação dos fatores atuais que estão limitando o desenvolvimento e o potencial de crescimento de startups tecnologicamente orientadas. Ao identificá-los, analisá-los e compará-los com os o que nos diz a pesquisa bibliográfica sobre a falta de start-up tecnológico, esperamos contribuir para a literatura atual. Além disso, sugeriremos um plano de ação para reduzir a influência dos fatores negativos para garantir uma melhor taxa de sobrevivência para o início dos próximos anos

Foundation fieldbus : from theory to practice

This paper describes the main characteristics of the Foundation Fieldbus (FF) technology considering both communication levels, namely H1 and H2, which have bit rates of 31.25 K and 100 Mbit/s, respectively. Several details about the physical layer, communication stack and user layer will be highlighted. Topics related with the configuration of instruments, as well as the design and implementation of supervision software, based on a LabVIEW interface, will be presented. A pilot plant that includes temperature, pressure, level and flow variables will be used to test and validate the capabilities of FF systems. Experimental results will be analyzed, their meaning discussed and the overall performance evaluated

Balanced Scorecard: A Powerful Method to Improve the Management of Educational Institutions

Trabalho apresentado em 2nd International Academic Conference on Teaching, Learning and Education (TLE 2020), Novembro 2020; Munique, AlemanhaTeaching, learning and education are the main activities related with any higher education institution (HEI), be they public or private. In this context, the balanced scorecard (BSC) is a powerful method that helps the successful application of performance measurements in terms of the efficiency of the programs, processes and people of any educational institution. The key performance indicators (KPI) are crucial indicators to translate the strategy into action, improving the synergies of all the people that contribute to management success. This paper underlines the importance of the BSC model in private, governmental and non-profit organizations highlighting its implementation in a HEI. In order to clarify the main concepts of the application of the BSC method in a HEI, a hypothetical institution (IPX) is considered and a set of strategic objectives are considered in terms of financial, clients, business, learning and growth perspectives. The key parameter indicators and the action plan are defined according to the HEI vision.info:eu-repo/semantics/publishedVersio

Estados magnéticos de sistemas com interacção dipolar baseados em redes planares

Dissertação de Mestrado em Física da Matéria Condensada apresentada à Faculdade de Ciências da Universidade do Port

Experimental study of the TEMPO mediated copolymerization of styrene with divinylbenzene

Since the discovery of controlled radical polymerization (CRP) in the early nineties (Georges et al., 1993), an ever increasing activity has been focused on the production of polymers with narrow molecular weight distributions and well-de ned architectures (such as block copolymers, stars or brushes). This work describes an experimental research on the nitroxide-mediated radical polymerization (NMRP) of styrene (S) and divinylbenzenes (DVB) in xylene (X) solution at 130 °C, using the stable radical TEMPO (2,2,6,6-tetramethylpiperidinyl-1-oxy) as mediator and AIBN (azobisisobutyronitrile) as initiator. Measurements of absolute molecular weights and z-average radius of gyration of the produced copolymers have been performed for different polymerization times using a SEC system with coupled refractive index (RI) and multi-angle laser light scattering (MALLS) detectors.FC

Time programmed feed of semi-batch reactors with non-linear radical copolymerizations: an experimental study of the system styrene+divinylbenzene using SEC/MALLS

Time programmed feed of semi-batch reactors with non-linear radical copolymerizations: an experimental study of the system styrene+divinylbenzene using SEC/MALLSFCT European Commissio