Abstract
The integration of micro-generation (µG) in distribution networks faces new challenges concerning the technical as well as commercial management. The µG integration in the Low and medium voltage distribution networks has many advantages for the grid operation, such as voltage profiles improvement, power losses reduction, and branches congestion levels reduction. This paper presents a method for guiding continuation power flow simulation of integrating µG on distribution feeders. A base model is designed with variable capacitor bank, µG unit such as PV and Wind generation are integrated. A control method is used to improve the voltage level of each node as well as improving power factor of the systems. The electricity consumption of a university's substation area where commercial, residential and municipal load are presented are modeled using actual data collected from each single residential hall and commercial buildings. This model allows analyzing the power flow and voltage profile along each distribution feeders on continuing fashion for a 24- hour period at hour-by-hour formulation. By dividing the feeder into load zones based on distance from each load node to distribution feeder head, the impact of integration of different µG operation in different condition has been discussed. © 2019 IEEE.

Abstract
Raw materials are very important for the development of economies and also to assure quality of life. Due to our production and consumption patterns new challenges emerged. The consumption of raw materials is very high, what raises important issues such as the depletion of resources, instability of prices and markets, risk of rupture of supply and other environmental, economic and social impacts. The European Union as many other regions of the world are implementing some strategies to overcome this problem, being the most recent the circular economy package, which intends to maintain materials as long as possible in the economic cycle, avoiding the use of new resources. There is a list of critical raw materials for EU and in this work the methodology of pairwise comparison was applied to a set of those raw materials for determining the importance of each taking in consideration several factors, such import reliance, end of life, economic importance, etc. The main goal was to develop a method based on pairwise comparison in a case of European Union to define priorities for acting, enhancing the achievement of sustainable solutions. It was also performed a sensitivity analysis. It was possible to conclude that the top position for the majority of the several raw materials does not change with the weights. Tantalum, Tungsten, Baryte and Antimony are always in the top positions. (C) 2019 The Authors. Published by Elsevier B.V.

Abstract

Abstract
O nosso estudo propôs a implementação de Gamificação numa Plataforma Social Académica de uma Universidade Virtual. Gamificação foi definida como o uso de elementos derivados dos jogos em contextos que não são jogos. Adaptando-a ao nosso contexto, quisemos verificar de que forma a sua implementação influenciava a Interação, Colaboração, Cooperação e Aprendizagem Social e ainda as presenças da Comunidade de Investigação, no espaço da Plataforma. Para isso usámos uma Metodologia de Design Based Research numa configuração de Métodos Mistos. Identificámos como foco de análise as formas sociais para a aprendizagem. Começámos por recolher opiniões dos utilizadores, usando entrevistas semi-estruturadas. Os resultados, informaram na construção de um protótipo “gamificado” construído com a ferramenta Elgg. Seguidamente efetuaram-se testes de usabilidade, recolhendo dados da performance e das opiniões dos utilizadores e foi efetuada uma implementação gamificada. Foram depois enviados questionários aos utilizadores e recolhidas estatísticas do uso. Os dados foram descritos, analisados e discutidos, segundo uma ordem cronológica. É discutido o impacto da implementação nas dimensões propostas e possibilidades de investigação futuras.;The article reports on the implementation of Gamification in a Social Platform of an Open University. Gamification is the use of game elements in non-game context. We adapted the implementation to context, to inspect the impact on the Interaction, Collaboration, Cooperation, Social Learning and on the Community of Inquiry. We used Design Based Research in a Mixed-Methods configuration. We looked at the Social Forms for Learning as a lens for the Elements. We present our study in a chronological order, explaining how each phase leads to the other. We first gathered information from the users of the academic platform via semi-structured interviews. We then designed a prototype with the Elgg engine, containing Gamification Elements. We made usability tests and gathered data from users´ performance and opinions. After we designed a second implementation, this time for students enrolled in different curricular units. This time we deployed a Survey and gathered information about the use of the platform. Lastly, we present our results discussing the impact on the proposed dimensions, and making suggestions for future research.

Abstract
The Internet of Things (IoT) represents a new technological revolution expected to impact all aspects of our daily lives in the future. Generation Z is foreseen as playing a fundamental role in the adoption of this type of technology, namely because of their growing importance as a consumer segment, their global role in the society, and in particular their close relationship with technology. However, extant literature on the adoption of IoT disregarded this segment. This paper aims to fulfill this gap, by exploring their knowledge, perceptions, and intentions of adopting IoT. After considering the main contributions in the consumer behavior literature regarding IoT, a qualitative approach was adopted, and 7 semi-structured interviews were conducted with Portuguese consumers aged 18-22. Content analysis was performed following the recommendations by Bardin (1977). The results showed that although Generation Z is not familiar with the concept of the IoT, they expressed a strong desire to integrate IoT technology in their lives, being open to its adoption in all fields of application, including for personal use, at home, and for work. One of the conclusions is that in order to foster the IoT adoption by this Generation, the functional benefits (performance, price, comfort, and safety) should be emphasized, so that the main risks perceived are weakened, namely the financial, performance, and physical risks.

Abstract
Industrial and commercial electricity customers have significant potential in providing flexibility for power systems through diverse demand response (DR) programs. However, the industrial and commercial potential of DR is not yet completely understood, especially regarding the emerging and advanced technologies associated with the smart grid. Advances in smart meter technology that allow monitoring and controlling responsive loads in real time will also be key enablers of DR potential. It can be more complex to implement DR for industrial loads if compared to residential loads mainly due to the reliability management that is more vital for industrial plants. Hence, this paper aims at providing a comprehensive review of the most recent advances on industrial and commercial DR. On this basis, this survey first presents the potential and technologies of DR in industrial and commercial sectors. Then, the existing models of DR in the mentioned sectors are presented. The presence of industrial and commercial DR in electricity markets is also investigated. Finally, the main positive and beneficial aspects, as well as challenges and barriers of industrial and commercial DR, are investigated.