Browsing by Issue Date, starting with "2021-01-11"
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- Social entrepreneurship and social innovation: looking inside the box and moving out of itPublication . Adro, Francisco José Nave do; Fernandes, CristinaThe impact of the global recession has served to increase the pressure on the management of nonprofit organizations (NPO). Executive leadership is an essential component of the success of these institutions. The aim of this paper is to survey the existing literature on social entrepreneurship and social innovation in the third sector (TS). For this, we used the collection of existing literature on the Web of Science (WoS). The 176 articles selected in this database were analyzed analytically and also using the VOSviewer software. The results show the existence of three approaches that highlight a relationship between entrepreneurial behavior and NPO performance, the creation of social value and the entrepreneurial orientation of NPO that triggered the emergence of hybrid organizations: social enterprises. This study aims to contribute to the construction of a holistic model for the sector.
- Design of a LongRange Wing for the UAS30 PlatformPublication . Espíndola, Francisco Nuno Maurício; Silvestre, Miguel Ângelo Rodrigues; Machado, José RenatoWith applications ranging from aerial photography to agriculture fields monitoring, and passing through goods transportation, allowing operation and maintenance costs to be kept lower than those of manned aircraft, unmanned aerial vehicles (UAV) have been a technology with increasing interest from military forces, private companies or even individuals. One of the challenges in the development of this type of platform is the ability to operate with good performance for different types of mission. In this way, CEiiA developed the UAS30 platform, which has the ability to be equipped with different wings according to the requirements of the mission to be accomplished, in order to expand the ability to operate with good performances for various types of mission. In this dissertation, a wing that aims to give UAS30 good performances, especially with regard to range and higher speeds than those which this platform currently operates, was designed. The design process started with the determination of the possible chord and span ranges limited by the existing tail of the UAS30. The XFOIL/XFLR5 tools were used, firstly to create a new airfoil for the Low Reynolds number conditions of the UAS30 and, then, to perform performance and stability analyses, which allowed the determination of the remaining design parameters such as the MAC, wingspan, taper ratio, washout, sweep, dihedral and incidence, allowing to obtain a compromise between performance and flight qualities. The use of cruise flaps in order to increase wing performance for offdesign conditions was also evaluated. In the final phase of the present work, the selection of an adequate propeller and an estimate of theoretical performance to verify the performance improvement brought about by the new wing design were performed. As a result, a wing was obtained that allows to reach a maximum speed much higher than that achieved with the original wings of the UAS30, allowing to fly with greater range and autonomy for the entire speed range. It was also concluded that, with the use of cruise flaps, not only stall speeds lower than those allowed by the original wing of the UAS30, but also maximum speeds higher than those achieved by the new wings without flaps, can also be achieved.
- Narrativas Transmediáticas e Jogos Digitais: O caso da franquia BatmanPublication . Pimenta, Diogo Filipe Costa; Merino, Francisco Alexandre Lopes FigueiredoAtualmente, um dos principais aspetos que se podem encontrar em alguns jogos digitais é o seu foco narrativo, procurando oferecer narrativas cada vez mais elaboradas, mas também contrariar a noção antiga onde os jogos digitais dependeriam exclusivamente de determinadas mecânicas e interações rápidas, que eram utilizadas para desafiar o jogador a ultrapassar alguns objetivos. Essa noção antiga é uma ideia contrária ao caminho que a indústria dos videojogos tem percorrido. Há um vasto catálogo de jogos digitais que representam histórias através da jogabilidade, onde invés de se exigir ao jogador um certo nível de habilidade, estes focam-se antes em outros aspetos, que promovem a imersão narrativa, como a exploração do cenário, o poder de decisão, a utilização dos controlos para gerar emoções e picos de tensão, podendo oferecer uma variação entre os sentimentos de frustração e satisfação. O objetivo desta dissertação é analisar os videojogos como um meio capaz de interagir com os outros para contar histórias. Será então abordada a integração de jogos digitais numa narrativa transmediática, tendo a franquia Batman como caso de estudo.