Browsing by Author "Grilo, António"
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- Deontologia MilitarPublication . Grilo, AntónioEste Estudo é sobre a Cultura Militar no Exército, ou sejam os valores, as filosofias, e as tradições que animam a força. Embora as culturas civis e militar partilhem muitos valores comuns, existem no entanto, diferenças significativas entre elas. Por exemplo, enquanto a nossa cultura civil enfatiza a liberdade e individualidade, a cultura militar subestima-os e enfatiza valores como disciplina e abnegação que materializam o imperativo da eficácia militar e sucesso no campo de batalha. Simultaneamente, as culturas civis e militar são interactivas. Assim as Forças Armadas de hoje, ancoradas pelos laços de tradição e exigências de eficácia militar, são também empurradas pelos ventos das pressões da sociedade e puxadas pelas correntes criadas por políticas governamentais e pela mudança tecnológica. As pressões sociais embora independentes do Exército, têm um grande impacto no clima actual nas unidades militares e um potencial óbvio para afectar a sua cultura subjacente. Pese embora as pressões sociais externas e o ambiente possam afectar a cultura militar ao longo do tempo, a mais poderosa e directa influência ao clima organizacional e, eventualmente, à cultura vem do corpo de oficiais das Forças Armadas. Os Oficiais transformam valores em acção, fixam o exemplo, e articulam o ponto de vista da instituição militar, sendo que, essas pressões complicaram as tarefas da preparação do corpo de oficiais que treinam, disciplinam, e inspiram a força. Hoje, as pressões ambientais externas devidas a uma variedade de factores, como a alteração no tipo de operações militares, o constrangimento de recursos, as missões variáveis, pressões do estado matrimonial e demográfico da população militar, avanços rápidos na tecnologia, e as múltiplas oportunidades na sociedade civil estão a afectar o clima organizacional no Exército e podem ter um impacto imprevisível na sua cultura subjacente. O objectivo deste estudo é medir e desenvolver recomendações em assuntos relativos ao clima e cultura, que assegurarão eficácia militar ao longo dos anos. Abstract: This Study is about the Military Culture in the Army, in other words, the values, the philosophies, and the traditions that animate the force. Although the civil and military cultures share many common values, exist however, significant differences among them. For instance, while our civil culture emphasizes the freedom and individuality, the military culture underestimates them and it emphasizes values as discipline and self-sacrifice that materialize the imperative of the military effectiveness and success on the battlefield. Simultaneously, the civil and military cultures are interaction. Thus today’s Armed forces, anchored by the bonds of tradition and demands of military effectiveness, will also be pushed by the winds of the society’s pressures and pulled by the currents created by government politics and for the technological change. Society’s pressures, although independent of the Army, have a great impact on the current climate actual within military units and an obvious potential for affecting the underlying culture. Although external societal pressures and the policy environment can effect military culture along the time, the most powerful and direct influence on organizational climate and, eventually, on culture comes from within the officer corps of the Armed Forces. Officers turn values in action, set the example, and articulate the point of view of the military institution, and, those pressures complicated the tasks of preparation of the officer’s corps who train, discipline, and inspire the force. Today, the external environmental pressures owed to a factor variety, as the alteration in the type of military operations, the embarrassment of resources, the variable missions, pressures of the matrimonial and demographic state of the military population, fast progresses in the technology, and the multiple opportunities in the civil society are affecting the organizational climate in the Army and they can have an unexpected impact on his underlying culture. The aim of this study is to measure and to develop recommendations on subjects concerning climate and culture, which will ensure military effectiveness along the years.
- Energy and quality of service management in wireless multimedia sensor networksPublication . Pereira, Paulo; Gonçalves, José; Grilo, António; Fortunato, Carlos; Nunes, Mário; Casaca, AugustoSensor networks are composed of resource constrained nodes that capture data from the environment, preprocess it and then transmit it to a sink node. This paper presents a scenario for monitoring an electricity distribution network, an energy analysis of the used sensor nodes and an intelligent energy and quality of service (QoS) manager. This manager continuously adapts the provided QoS according to the energy level of the nodes.
- Fault location in an electrical energy distribution infrastructure with a wireless sensor networkPublication . Fortunato, Carlos; Casaca, Augusto; Grilo, António; Santos, MiguelThis article presents a detailed analysis of the applicability of wireless systems in the localization of faults in the energy distribution network. The hwardware and software architectures of the envised sensor solution will also be described and finally, the integration of this system into Smart Grids will be discussed in terms of automatic fault analysis. A pilot system has been tested in a subset of the Portuguese energy distribution infrastructure operated by EDP Energias de Portugal. It presents a new approach to a fault locator system for the power network. The purpose is to obtain faster and more reliable information about the disruptions in the power distribution network and their location. Furthermore, the wireless sensors allow remote detection of medium and low voltage (MV/LV) power transformer hotspots in order to identify emerging malfunction as well as detection of intrusion in the MV/LV power transformers.
- Fault location in an electrical energy distribution infrastructure with a wireless sensor networkPublication . Fortunato, Carlos; Casaca, Augusto; Grilo, António; Santos, MiguelThis paper presents a detailed analysis of the applicability of wireless systems in the localization of faults in the energy distribution network. The hardware and software architectures of the envisaged sensor solution will also be described and finally, the integration of this system into Smart Grids will be discussed in terms of automatic fault analysis. A pilot system has been tested in a subset of the Portuguese energy distribution infrastructure operated by EDP Energias de Portugal. It presents a new approach to a fault locator system for the power network. The purpose is to obtain faster and more reliable information about the disruptions in the power distribution network and their location. Furthermore, the wireless sensors allow remote detection of medium and low voltage (MV/LV) power transformer hotspots in order to identify emerging malfunction as well as detection of intrusion in the MV/LV power transformers.
- A Geopolítica de AngolaPublication . Grilo, AntónioEm 2002 Angola emergiu de quase três décadas de guerra civil com uma parte significativa das suas infra-estruturas destruídas ou danificadas, economia caótica, estruturas sociais completamente abaladas e uma grande percentagem da sua população deslocalizada. Passados que estão seis anos, estará esta jovem nação em situação de iniciar a sua ascensão para assumir o protagonismo de potência regional? O método científico empregue nesta investigação recorre ao modelo hipotético- -dedutivo, procurando-se resposta à questão central “Em que medida os atributos geopolíticos e geoestratégicos de Angola se traduzem como uma fonte de poder?” Organizado em cinco capítulos, a investigação tem o intuito de analisar Angola, desde a sua história e enquadramento com algumas teses geoestratégicas, avaliação do seu potencial estratégico, bem como a dinâmica das suas relações internacionais. Por último tecem-se algumas conclusões. Angola surge aos olhos da comunidade africana e internacional como uma das mais proeminentes potências regionais africanas, reflectindo para o exterior uma projecção políticodiplomática nuns casos, militar em outros e económica na generalidade. Crente do seu potencial na região em que se localiza, Angola pragmatiza a disputa dos seus recursos estratégicos numa política de afirmação que lhe permitirá, paulatinamente, assumirse, com naturalidade, como potência regional. Mas a senda a trilhar ainda é longa, resta-lhe talvez o mais importante, resolver os seus problemas sociais, de décadas de conflito, que levarão igualmente décadas a solucionar. Ainda assim, as suas potencialidades permitem-nos perspectivar um futuro promissor para Angola, não obstante os inúmeros obstáculos que terá de vencer. Abstract: In 2002 Angola emerged from almost three decades of civil war with a significant part of its infrastructure destroyed or damaged, chaotic economy, social structures completely shaken and a large percentage of its population relocated. Angola is in the eyes of the african and international community as one of the most prominent african regional powers, reflecting a political-diplomatic projection to the outside in some cases, military on other and economic in general. Believer in the potential on the region where is located, Angola is pragmatic on the dispute his resources in a strategic policy statement that it will, slowly, take it as a regional power naturally. But to walk the path is still long, it remains perhaps the most important, solving their social problems, from decades of conflict, which also take decades to resolve. The scientific method used in this research uses the hypothetical-deductive model, seeking to answer the central question "how the geopolitical and geostrategic attributes of Angola are reflected as an objective source of power." Organized into five chapters, the research will examine Angola, since its history and geostrategic environment, some geopolitical theses, analysis of the heir potential and strategic and the dynamics of international relations. Finally draw a few conclusions.
- A wireless sensor and actuator network for improving the electrical power grid dependabilityPublication . Grilo, António; Casaca, Augusto; Pereira, Paulo; Buttyan, Levente; Gonçalves, José; Fortunato, CarlosThis paper presents an overview of a Wireless Sensor and Actuator Network (WSAN) used to monitor an electrical power grid distribution infrastructure. The WSAN employs appropriate sensors to monitor key grid components, integrating both safety and security services, which improve the grid distribution dependability. The supported applications include, among others, video surveillance of remote secondary substations, which imposes special requirements from the point of view of quality of service and reliability. The paper presents the hardware and software architecture of the system together with performance results.
- A wireless sensors suite for Smart Grid applicationsPublication . Grilo, António; Sarmento, Helena; Nunes, Mário; Gonçalves, José; Pereira, Paulo; Casaca, Augusto; Fortunato, CarlosThis paper presents a demonstrator of a Wireless Sensor and Actuator Network (WSAN) for Smart Grid applications, developed in the context of project WSAN4CIP. This WSAN is formed by WSAN nodes equipped with sensors and a wireless radio interface, which monitor key parameters of power grid equipments belonging to the Medium Voltage (MV) and Low Voltage (LV) segments. The measurements are reported to the SCADA system and constitute the basis of both safety and security services to improve the power grid distribution dependability. This paper describes the hardware of the sensor nodes and presents the respective performance results, attesting the feasibility of the proposed solutions.