EN - PCCIN - Produção Científica do Centro de Investigação Naval (CINAV)
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- Acidente Vascular Cerebral no Adulto Jovem: A Realidade num Centro de ReabilitaçãoPublication . Henriques, Moisés Santos
- Baropodografia ComputorizadaPublication . Henriques, Moisés Santos; Henriques, Joana; Jacinto, Jorge
- Chronic hyponatremia: a new risk factor for fragility fractures in the elderly?Publication . Henriques, Moisés Santos
- Collaborative Method to Develop an Enterprise Architecture in a Public InstitutionPublication . Roboredo, Nuno Paulo RochaThe growth of organizational complexity degrades business processes efficiency. Enterprise Architecture (EA) is an instrument to manage organizational complexity, through the improvement of organizational self-awareness. EA improves alignment between business and IT to ensure the business value of IT, and enables rationalization of organizational resources. However, depending of organizational culture and characteristics, there are several issues hindering the EA development within an organization. Actual frameworks, like TOGAF, require a significant number of skilled human resources (HR), which some organizations, like public institutions, cannot assign to EA activities. Our research goal is to provide an EA capability to public institutions, enabling these institutions to take advantage of EA benefits. Public institution contexts and stakeholder concerns were explored as well as issues acting as enablers or as inhibitors for an EA development. We propose a collaborative method to develop an EA, applying lean and agile principles, focusing on public institution specificities. Our collaborative method tries to capture organizational knowledge, spread among employees, into an EA model, to map the enterprise cartography of the institution. Our method has been demonstrated and evaluated in the IT sector of the Portuguese Navy.
- Comparative Analysis on Country Reputation through Patterns of Intellectual Capital: The case Portugal Versus Romania.Publication . Vairinhos, Valter MartinsIn the last decade the world economy has undergone numerous transformations that have changed the way we evaluate the assets of organizations, cities and countries. In this context, Intellectual Capital (IC) and Knowledge Management (KM), based on the management of intangible assets, became a factor of differentiation and competitiveness. The way countries are dealing with IC and knowledge management is a decisive factor in their international reputation, which in turn acts as country branding. Country branding is the image of a nation-state and from the link between this image and the success of its economy, corresponding to its competitiveness, its richness, the efficiency of the state and the quality of life of its citizens, among others. Reputable countries usually attract more investment and, consequently, are more innovative. While some decision makers argue that economic development should focus on investment and the creation of jobs, many studies have shown that this growth should be underpinned by the proper management of IC in all its dimensions. Assuming that is proved a cause-effect relationship between IC management and innovation - the most innovative countries are those with a better IC management and vice versa - the purpose of this study is to search for empirical evidence of a possible relationship between these indicators and the reputation of the countries. If it is possible to identify a connection between the variables that compose each index, we can design patterns that can guide the management of international branding strategy of each country. This paper uses multivariate data analyses techniques, including biplots methodology, in its attempt to study the case of Portugal versus Romania. These countries have different indicators, but both have problems in reputation management. In terms of originality, this empirical study aims to create discussions about the factors that determine the reputation of these countries.
- Comparing Childhood Hypertension Prevalence in Several Regions in PortugalPublication . Teodoro, M. FilomenaThe pediatric high blood pressure has severe the risk factors and it’s prevention is mandatory. To evaluate the pediatric arterial hypertension caregivers Knowledge, in [1, 2] was done a preliminary study of an experimental and simple questionnaire with 5 questions previously introduced in [3]. The analysis of an improved questionnaire applied to children caregivers and filled online was completed in [4, 5]. In the present work, we obtain estimates about the childhood hypertension prevalence in several regions of Portugal. As preliminary approach, we perform an analysis of variance. The results evidences significant differences of high blood pressure prevalence between girls and boys; also the children’s age is a significant issue to take into consideration.
- Control Charts Limits Flexibility Based on the Equipment ConditionsPublication . Lampreia, Suzana Paula Gomes Fernando da Silva; Vairinhos, Valter Martins; Lobo, Victor J. A. S.; Parreira, Rui; Requeijo, José GomesCondition Based Maintenance became an important development in industrial and transport equipment maintenance efforts. Many statistical methodologies have been applied in this area. These methodologies are usually applied off-line: after the data is collected. We propose an online, real-time condition monitoring system based on a modified control chart, applied to engine parameters. These charts should be flexible enough and its control limits should reflect the equipment state, the manufacturer specifications and onboard meteorological conditions. In this study we will develop a methodology to specify flexible chart control limits. The experimental equipment is a combined diesel or gas propulsion system. Two phases will be assumed. In phase 1 the equipment and historical data are analyzed, studying historical data, which leads to the definition of equipment parameters. In phase 2, new data is obtained by simulation, and the Exponentially Weighted Moving Average charts are applied considering flexible limits.
- Design Challenges of a Maritime Multipurpose Unmanned VehiclePublication . Lopes, Vasco Pereira; Silva, Paulo Alexandre Marques Pires da; Moreira, MiguelMilitary Navies have several missions in which due to their complex, dangerous, or disaster scenarios, unmanned vehicles are suitable to perform the necessary tasks. Besides other issues it is a current subject of research the trade-off between using many mission oriented unmanned vehicles or the use of less number of more robust and versatile multimission vehicles. Challenged by the technological advances achieved in mobile robotics and unmanned vehicles, and the need to develop in house know-how, this project aimed to put into practice the development of a concept design of a multimission unmanned surface vehicle, that can operate individually or cooperate with other systems whose development will be done in parallel on other projects. This unmanned vehicle, designated Unmanned Surface Vehicle for the Portuguese Navy - USV – PoN is part of project based oriented learning strategy in development in the Portuguese Naval Academy. It poses particular challenges related to the broad spectrum of the concept of operations, such as mine warfare operations, port surveillance and protection operations, search and rescue operations, hydrographic data collection operations. All of these operations demand different and challenging missions and tasks, to which the concept design of the USV-PoN will answer in terms of feasibility studies and possible configurations. The purpose of this work is to address the challenges that the concept of operations and corresponding technical specifications put into the design of the USV-PoN and show how to overcome them making the study and analysis necessary for the production of a prototype based on the concept design. Out of the scope of this work were aspects related to sensor development and integration as well as the command and control of the vehicle.
- Designing for Safe Maritime NavigationPublication . Conceição, Vítor Fernando Plácido daSeveral technological advances have been seen the maritime domain to achieve higher operational efficiency and to address the generally recognised causes of most maritime accidents. The International Maritime Organization (IMO) endorses the use of best available technology to “drive continuous improvement and innovation in the facilitation of maritime traffic” in line with the goal of sustainable development. It is commonly acknowledged that modern technology revolutionized marine navigation, and presently it has a large potential to increase safety in navigation. However, the incorporation of new technologies in support of navigation also brought unforeseen critical consequences, contributing to unsafe practices, or even to accidents or incidents. Several issues were associated with human factors. To properly address the adoption of the newest technology in support of safe navigation, IMO established the e-navigation concept, currently under implementation. The complexity of the maritime socio-technical system requires novel theoretical foundations, since many of the present framework rely on the analysis of accidents. The design of complex maritime navigation system must take place on several levels, providing different perspectives over the system problems. The evaluation and design of technologies envisaged by the e-navigation concept requires a better understand of how teams perform the navigation work in the pursuit of safe navigation. This study attempts to provide a better understanding on how maritime navigation is currently done on-board, considering the overarching elements and their interactions. In maritime navigation safety is a transverse issue, and that is why we need to know the conditions for safe navigation to improve the design of ship navigation control. The work supporting this thesis was focused on: (i) understanding how navigation is done and to perceive by the practitioners, (ii) understanding interactions between humans and technological interfaces, and (iii) understanding the relevant soft skills for the navigation functions. To address these topics, data was collected from expert practitioners such as navigators, pilots and instructors, thru semi structured interviews and questionnaires. The mains contribution of this study lies in presenting a framework of maritime navigation, exploring the control processes in the different levels of the maritime socio-technical system. In the view of safe operations, interactions between stakeholders are clarified, trying to determine how they influence safe navigation. This systemic view is then analysed from the perspective of the ship, considering it as a Joint-cognitive system (JCS). It is proposed that this JCS comprises 5 control levels: reactive, proactive, planning, strategic and political-economical. Planning is considered a fundamental process in the maritime Socio-technical system, because it facilitates the interactions between the different control level. It also increases the integrity of communications and enhances the predictability of the different control agents. New directions are proposed to improve the design of navigation system, recommending new roles for human and automated agents, and presenting a new conceptual navigation display.
- Diesel Engine Condition Monitoring Due to Different Operation AreasPublication . Lampreia, Suzana Paula Gomes Fernando da Silva; Lobo, Victor J. A. S.; Requeijo, José GomesWhen a ship design is developed, its engines are installed accordingly the owner requisites and the environment conditions in the designated operation area. Usually they are not adapted to sail all over the world. This implies that in some cases the power output cannot be the same for the safety of the engine, If a engine was conceived to operate on 16ºC of ocean sea, when it navigates on a 36ºC ocean, the engine power must be limited in order to not provoke major damage. Due to the fact, in this study two diesel engines will be monitor with online data collection and statistical treatment. The statistic treatment will be with the univariate control charts. With the engines operating on a range of ocean temperatures form 16ºC to 36ºC, the power limitatiom and the systems must be flexible due the use of the engines and consequently the use of ships over sea.