Elspot: Nord Pool Spot Integration in MASCEM Electricity Market Simulator

The energy sector in industrialized countries has been restructured in the last years, with the purpose of decreasing electricity prices through the increase in competition, and facilitating the integration of distributed energy resources. However, the restructuring process increased the complexity in market players' interactions and generated emerging problems and new issues to be addressed. In order to provide players with competitive advantage in the market, decision support tools that facilitate the study and understanding of these markets become extremely useful. In this context arises MASCEM (Multi-Agent Simulator of Competitive Electricity Markets), a multi-agent based simulator that models real electricity markets. To reinforce MASCEM with the capability of recreating the electricity markets reality in the fullest possible extent, it is crucial to make it able to simulate as many market models and player types as possible. This paper presents a new negotiation model implemented in MASCEM based on the negotiation model used in day-ahead market (Elspot) of Nord Pool. This is a key module to study competitive electricity markets, as it presents well defined and distinct characteristics from the already implemented markets, and it is a reference electricity market in Europe (the one with the larger amount of traded power).

Integration of forest fire management with SDI: user requirements.

Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies.

A Communication and Resources Management Scheme to Support the Smart Grid Integration of Multiplayers Access to Resources Information

The increasing and intensive integration of distributed energy resources into distribution systems requires adequate methodologies to ensure a secure operation according to the smart grid paradigm. In this context, SCADA (Supervisory Control and Data Acquisition) systems are an essential infrastructure. This paper presents a conceptual design of a communication and resources management scheme based on an intelligent SCADA with a decentralized, flexible, and intelligent approach, adaptive to the context (context awareness). The methodology is used to support the energy resource management considering all the involved costs, power flows, and electricity prices leading to the network reconfiguration. The methodology also addresses the definition of the information access permissions of each player to each resource. The paper includes a 33-bus network used in a case study that considers an intensive use of distributed energy resources in five distinct implemented operation contexts.

Avaliação da qualidade do ar e classificação energética de uma piscina coberta e propostas de melhoria

A presente dissertação tem dois objetivos, o primeiro é a realização de uma auditoria energética e avaliação da qualidade do ar às instalações de uma Piscina Municipal, permitindo a sua classificação energética, e o segundo é o estudo de propostas de melhoria que contribuam para uma melhor eficiência energética do edifício. Na análise à qualidade do ar interior os parâmetros avaliados encontravam-se todos dentro dos limites estabelecidos por lei, com exceção dos valores de COVs que em dois pontos de medição (ambos na nave) ultrapassaram os limites estabelecidos por lei. A auditoria ao edifício permitiu verificar que o caudal mínimo de água nova nas piscinas imposto por lei é cumprido pela instalação. No que diz respeito ao caudal de ar novo introduzido, este apenas é respeitado quando a unidade de tratamento de ar está a debitar 100% da sua capacidade. Quando a unidade opera a 50% da sua capacidade apresenta um défice de 5% do valor mínimo estabelecido. Relativamente às perdas energéticas associadas aos tanques de natação, estas apresentam um valor de 95,89 kW, em que 59,09 kW dizem respeito às perdas por evaporação. Foi também possível concluir que as perdas por evaporação representam cerca de 39% da energia calorifica produzida nas caldeiras. O edifício apresenta um consumo anual de eletricidade de 166 482 kWh em que 69% deste valor é provocado pelas unidades de tratamento de ar e a iluminação apresenta apenas um peso de 3%. Em relação ao gás natural consumido pelas caldeiras o seu valor anual é de 1 317 240 kWh. A simulação dinâmica do edifício permitiu concluir que este apresenta um IEE de 1 269,9 kWh/m2.ano. O rácio de classe energética (RIEE) é de 1,24 o que significa que o edifício pertence à classe energética C. As medidas estudadas para a melhoria da eficiência energética, nomeadamente integração energética com uma central de ciclo combinado, aplicação de cobertura isotérmica nas piscinas e substituição do telhado na zona da nave, mostraram-se viáveis. O estudo da possibilidade da realização de uma integração energética permitiu concluir que a poupança anual é de 9 374 € e o investimento é recuperado em menos de 1,5 anos. Relativamente à aplicação de cobertura isotérmica o investimento é de 14 000 € e é recuperado em 2 anos. A substituição do telhado na zona da nave tem um investimento de 20 500 € e a recuperação realiza-se num período de 3,5 anos.

Models and tools for value systems analysis in collaborative environments

Dissertation to obtain the degree of Doctor in Electrical and Computer Engineering, specialization of Collaborative Networks

Digital storytelling: student ID in higher education

Identity achievement is related to personality, as well as cognitive and interpersonal development. In tandem with the deep structural changes that have taken place in society, education must also shift towards a teaching approach focused on learning and the overall development of the student. The integration of technology may be the drive to foster the needed changes. We draw on the literature of multiple subject areas as basis for our work, namely: identity construction and self-representation, within a psychological and social standpoint; Higher Education (HE) in Portugal after Bologna, college student development and other intrinsic relationships, namely the role of emotions and interpersonal relationships in the learning process; the technological evolution of storytelling towards Digital Storytelling (DS) – the Californian model – and its connections to identity and education. Ultimately we propose DS as the aggregator capable of humanizing HE while developing essential skills and competences. Grounded on an interpretative/constructivist paradigm, we implemented a qualitative case study to explore DS in HE. In three attempts to collect student data, we gathered detailed observation notes from two Story Circles; twelve student written reflections; fourteen Digital Stories and detailed observation notes from one Story Show. We carried out three focus groups with teachers where we discussed their perceptions of each student prior to and after watching the Digital Stories, in addition to their opinion on DS in HE as a teaching and learning method and its influence on interpersonal relationships. We sought understandings of the integration of DS to analyze student selfperception and self-representation in HE contexts and intersected our findings with teachers’ perceptions of their students. We compared teachers’ and students’ perspectives, through the analysis of data collected throughout the DS process – Story Circle, Story Creation and Story Show – and triangulated that information with the students’ personal reflections and teacher perceptions. Finally we questioned if and how DS may influence teachers’ perceptions of students. We found participants to be the ultimate gatekeepers in our study. Very few students and teachers voluntarily came forth to take part in the study, confirming the challenge remains in getting participants to see the value and understand the academic rigor of DS. Despite this reluctance, DS proved to be an asset for teachers and students directly and indirectly involved in the study. DS challenges HE contexts, namely teacher established perception of students; student’s own expectations regarding learning in HE; the emotional realm, the private vs. public dichotomy and the shift in educational roles.

Cidadão e comunidade : que relevância no processo de contratualizaç

RESUMO - Nas últimas décadas, a especialização dos cuidados médicos tem conduzido a uma fragmentação do sistema de prestação, que, associada a uma deficiente coordenação entre serviços, cuidados e prestadores, torna a navegabilidade dos utentes nos sistemas de saúde uma tarefa complexa. Um novo modelo de organização, assente na procura de valor para os cidadãos, deve adoptar uma abordagem sistémica, que tenha subjacente uma coordenação integrada de serviços, numa perspectiva de ciclo de cuidados. Reorientar a prestação de cuidados para a obtenção de resultados e valor em saúde, exige uma reengenharia em torno da estrutura, organização e avaliação1 dos cuidados, requerendo, nomeadamente: i) instrumentos e ferramentas que auxiliem e estruturem este novo modelo; ii) assumpção dos papéis definidos para cada um dos actores do sistema, nomeadamente ao nível da coordenação; iii) encorajamento à adopção de modelos de contratualização, pagamento e competição, que responsabilizem os actores envolvidos não só pela prática que desenvolvem, mas pelos resultados em saúde. Estes mecanismos constituem uma oportunidade para expandir e sustentar abordagens, programas e intervenções integradas. Investir num sistema de pagamento por valor em saúde — P4V — payment for value, traduz uma aposta na relação entre diagnóstico, tratamento, resultados clínicos e custos, enquanto estratégia para assegurar ganhos em qualidade dos cuidados, eficiência dos processos e valor em saúde para o cidadão. Neste contexto, a gestão da doença enquanto modelo direccionado para o reforço da perspectiva e participação activa do cidadão, e avaliação compreensiva de novas formas de organização e gestão do sistema de prestação, constitui um instrumento para informar e sustentar esse processo de reengenharia do sistema. Um modelo que procura assegurar o encontro entre o estado da arte na prestação de cuidados e um nível óptimo, garantindo a qualidade de vida expectável para a pessoa com doença crónica. ----------------- ---------ABSTRACT – In the last decades advanced medical sciences trend to specialized care and fragmented health systems, leaving patients with a challenge on navigating services and care, requiring them to see a sequence of specialists each delivering discrete interventions. To overcome these challenges, every health system must redefine health care delivery to use its resources more efficiently and improve quality of care through an organization of the system as a whole. A system currently organized around value for patients, entails a framework that comprises the entire set of activities needed to address a patient´s medical condition, over the full cycle of care. Value- based care delivery therefore requires an integrated practice, both across services and time, and implies a movement through new structures, organization models, evaluation efforts and payment systems that enables, catalyze and reinforces the extension and sustainability of the steps needed to the change required. A shift from a payment for performance to a payment for value focuses attention on maximizing the overall value of care, and encourages coordination and integration between components of care that extends from screening, diagnoses, all the way through treatment, outcomes and costs, and ensuring an incentive for potentially high value types of care as well as innovation. These leave the actors of the system with the task of best allocating and valuing components of care. Disease management as a model designed to structure patient engagement and involvement in their care, and assure a comprehensive evaluation and monitoring of new organization and care delivery strategies align an opportunity as a source of information and sustainability for the progress of a growing number of likeminded efforts now underway across care delivery for chronic diseases. This framework will allow the fulfillment of the gap between sta

Social Media Integration in Video Games: A Social Overlay for Desktop Games

Simpósio de Informática (INForum 2015), Covilhã, Portugal. Notes: Best paper award nominee.

Sistema integrado de gestão da qualidade, ambiente, segurança e saúde: uma proposta para o setor da construção civil

Dissertação de Mestrado em Gestão Integrada da Qualidade, Ambiente e Segurança

Integration of repositories in elearning systems

The wide acceptance of digital repositories today in the eLearning field raises several interoperability issues. In this paper we present the interoperability features of a service oriented repository of learning objects called crimsonHex. These features are compliant with the existing standards and we propose extensions to the IMS interoperability recommendation, adding new functions, formalizing message interchange and providing also a REST interface. To validate the proposed extensions and its implementation in crimsonHex we developed a repository plugin for Moodle 2.0 that is expected to be included in the next release of this popular learning management system.

Sensor Integration for Smart Cities Using Multi-Hop Networks

Smart Cities are designed to be living systems and turn urban dwellers life more comfortable and interactive by keeping them aware of what surrounds them, while leaving a greener footprint. The Future Cities Project [1] aims to create infrastructures for research in smart cities including a vehicular network, the BusNet, and an environmental sensor platform, the Urban Sense. Vehicles within the BusNet are equipped with On Board Units (OBUs) that offer free Wi-Fi to passengers and devices near the street. The Urban Sense platform is composed by a set of Data Collection Units (DCUs) that include a set of sensors measuring environmental parameters such as air pollution, meteorology and noise. The Urban Sense platform is expanding and receptive to add new sensors to the platform. The parnership with companies like TNL were made and the need to monitor garbage street containers emerged as air pollution prevention. If refuse collection companies know prior to the refuse collection which route is the best to collect the maximum amount of garbage with the shortest path, they can reduce costs and pollution levels are lower, leaving behind a greener footprint. This dissertation work arises in the need to monitor the garbage street containers and integrate these sensors into an Urban Sense DCU. Due to the remote locations of the garbage street containers, a network extension to the vehicular network had to be created. This dissertation work also focus on the Multi-hop network designed to extend the vehicular network coverage area to the remote garbage street containers. In locations where garbage street containers have access to the vehicular network, Roadside Units (RSUs) or Access Points (APs), the Multi-hop network serves has a redundant path to send the data collected from DCUs to the Urban Sense cloud database. To plan this highly dynamic network, the Wi-Fi Planner Tool was developed. This tool allowed taking measurements on the field that led to an optimized location of the Multi-hop network nodes with the use of radio propagation models. This tool also allowed rendering a temperature-map style overlay for Google Earth [2] application. For the DCU for garbage street containers the parner company provided the access to a HUB (device that communicates with the sensor inside the garbage containers). The Future Cities use the Raspberry pi as a platform for the DCUs. To collect the data from the HUB a RS485 to RS232 converter was used at the physical level and the Modbus protocol at the application level. To determine the location and status of the vehicles whinin the vehicular network a TCP Server was developed. This application was developed for the OBUs providing the vehicle Global Positioning System (GPS) location as well as information of when the vehicle is stopped, moving, on idle or even its slope. To implement the Multi-hop network on the field some scripts were developed such as pingLED and “shark”. These scripts helped upon node deployment on the field as well as to perform all the tests on the network. Two setups were implemented on the field, an urban setup was implemented for a Multi-hop network coverage survey and a sub-urban setup was implemented to test the Multi-hop network routing protocols, Optimized Link State Routing Protocol (OLSR) and Babel.

Prognostic Value of a New Cardiopulmonary Exercise Testing Parameter in Chronic Heart Failure: Oxygen Uptake Efficiency at Peak Exercise - Comparison with Oxygen Uptake Efficiency Slope

INTRODUCTION: A growing body of evidence shows the prognostic value of oxygen uptake efficiency slope (OUES), a cardiopulmonary exercise test (CPET) parameter derived from the logarithmic relationship between O(2) consumption (VO(2)) and minute ventilation (VE) in patients with chronic heart failure (CHF). OBJECTIVE: To evaluate the prognostic value of a new CPET parameter - peak oxygen uptake efficiency (POUE) - and to compare it with OUES in patients with CHF. METHODS: We prospectively studied 206 consecutive patients with stable CHF due to dilated cardiomyopathy - 153 male, aged 53.3±13.0 years, 35.4% of ischemic etiology, left ventricular ejection fraction 27.7±8.0%, 81.1% in sinus rhythm, 97.1% receiving ACE-Is or ARBs, 78.2% beta-blockers and 60.2% spironolactone - who performed a first maximal symptom-limited treadmill CPET, using the modified Bruce protocol. In 33% of patients an cardioverter-defibrillator (ICD) or cardiac resynchronization therapy device (CRT-D) was implanted during follow-up. Peak VO(2), percentage of predicted peak VO(2), VE/VCO(2) slope, OUES and POUE were analyzed. OUES was calculated using the formula VO(2) (l/min) = OUES (log(10)VE) + b. POUE was calculated as pVO(2) (l/min) / log(10)peakVE (l/min). Correlation coefficients between the studied parameters were obtained. The prognosis of each variable adjusted for age was evaluated through Cox proportional hazard models and R2 percent (R2%) and V index (V6) were used as measures of the predictive accuracy of events of each of these variables. Receiver operating characteristic (ROC) curves from logistic regression models were used to determine the cut-offs for OUES and POUE. RESULTS: pVO(2): 20.5±5.9; percentage of predicted peak VO(2): 68.6±18.2; VE/VCO(2) slope: 30.6±8.3; OUES: 1.85±0.61; POUE: 0.88±0.27. During a mean follow-up of 33.1±14.8 months, 45 (21.8%) patients died, 10 (4.9%) underwent urgent heart transplantation and in three patients (1.5%) a left ventricular assist device was implanted. All variables proved to be independent predictors of this combined event; however, VE/VCO2 slope was most strongly associated with events (HR 11.14). In this population, POUE was associated with a higher risk of events than OUES (HR 9.61 vs. 7.01), and was also a better predictor of events (R2: 28.91 vs. 22.37). CONCLUSION: POUE was more strongly associated with death, urgent heart transplantation and implantation of a left ventricular assist device and proved to be a better predictor of events than OUES. These results suggest that this new parameter can increase the prognostic value of CPET in patients with CHF.

Knowledge repository framework for crowdsourcing innovation intermediary: a proposal

A crowdsourcing innovation intermediary performs mediation activities between companies that have a problem to solve or that seek a business opportunity, and a group of people motivated to present ideas based on their knowledge, experience and wisdom, taking advantage of technology sharing and collaboration emerging from Web2.0. As far as we know, most of the present intermediaries don´t have, yet, an integrated vision that combines the creation of value through community development, brokering and technology transfer. In this paper we present a proposal of a knowledge repository framework for crowdsourcing innovation that enables effective support and integration of the activities developed in the process of value creation (community building, brokering and technology transfer), modeled using ontology engineering methods.

Possibilidade de desenvolvimento integrado pela expressão musical: Uma experiência no 1º CEB

Desde o primeiro momento, este projeto procurou libertar-se dos cenários tradicionais em que a aprendizagem era encarada como uma atividade solitária e individual; ao longo do processo, cada aluno encontrava-se sozinho perante a tarefa, sob olhar atento do professor (tais posturas eram próprias de uma cultura autoritária e pouco solidária na apropriação do saber). Decorrente dessa vontade de alterar formas de atuação, este projeto assentou os seus pressupostos teóricos na teoria em espiral de Bruner e na teoria das inteligências múltiplas de Gardner. Assim, o aluno é sempre encarado como um ser em desenvolvimento, razão pela qual urge ter uma visão holística e integrada desse desenvolvimento. Como tal, associada a estas teorias aparece a aprendizagem cooperativa e, consequentemente, o conceito de Zona de Desenvolvimento Proximal de Vygotsky e a integração curricular diretamente ligada à metodologia de projeto defendida por autores como Dewey e Kilpatrik, pontos basilares de todo este estudo. Tal como o próprio nome do projeto indica Possibilidades de desenvolvimento integrado pela Expressão Musical: Uma experiência no 1.º CEB, o objetivo principal é investigar as possibilidades de desenvolvimento global do aluno, com a interligação dos vários saberes que lhe permitam construir o seu conhecimento de uma forma integrada, tendo como ponto de partida a expressão musical. Desde a elaboração das planificações, passando pelas atividades desenvolvidas ao longo das aulas, houve sempre a preocupação em promover a participação ativa dos alunos e, como é evidente pelos mapas de conceitos, privilegiar a integração curricular bem como o desenvolvimento global dos alunos. Os dados obtidos através da entrevista efetuada aos alunos e do inquérito final demonstram o reconhecimento, por parte dos alunos, da expressão musical como uma mais3 valia para a sua aprendizagem nas diversas disciplinas, bem como a sua preferência pelo trabalho cooperativo.

A Quantitative Model for Decomposing & Assessing the Value for the Customer

The research presented in this paper proposes a novel quantitative model for decomposing and assessing the Value for the Customer. The proposed approach builds on the different dimensions of the Value Network analysis proposed by Verna Allee having as background the concept of Value for the Customer proposed by Woodall. In this context, the Value for the Customer is modelled as a relationship established between the exchanged deliverables and a combination of tangible and intangible assets projected into their endogenous or exogenous dimensions. The Value Network Analysis of the deliverables exchange enables an in-depth understanding of this frontier and the implicit modelling of co-creation scenarios. The proposed Conceptual Model for Decomposing Value for the Customer combines several concepts: from the marketing area we have the concept of Value for the Customer; from the area of intellectual capital the concept of Value Network Analysis; from the collaborative networks area we have the perspective of the enterprise life cycle and the endogenous and exogenous perspectives; at last, the proposed model is supported by a mathematical formal description that stems from the area of Multi-Criteria Decision Making. The whole concept is illustrated in the context of a case study of an enterprise in the footwear industry (Pontechem). The merits of this approach seem evident from the contact with Pontechem as it provides a structured approach for the enterprises to assess the adequacy of their value proposition to the client/customer needs and how these relate to their endogenous and/or exogenous tangible or intangible assets. The proposed model, as a tool, may therefore be a useful instrument in supporting the commercialisation of new products and/or services.