Mostrando recursos 1 - 20 de 526

  1. Acoustic Channel Frequency Response Estimation Using Sources of Opportunity

    Santos, Ana Bela; Felisberto, P.; Jesus, S. M.
    This work addresses the usage of ship radiated noise to estimate the ocean acoustic water propagation channel response between two vertical line arrays. We derive an expression for the frequency response channel estimate using a normal mode development based on cross-correlation methods, in a similar way as Roux et al. [1]. Its applicability and limitations in simulated and real conditions is discussed. Simulations are conducted using the normal mode model KRAKEN, based on the experimental setup and environmental parameters gathered during the RADAR' 07 sea trial, off the west coast of Portugal, in July of 2007. In this sea trial...

  2. Differential evolution in shortest path problems

    Guerreiro, Pedro; Jesus, Mário Carlos Machado; Marquez, Alberto
    This paper proves that the Differential Evolution (DE) algorithm is valid to solve the Shortest Path (SP) problem in random, median sized networks. From the trials, we have obtained an 9% accuracy, in the worst case scenario.

  3. An energy-aware resource design model for constrained networks

    Correia, N.; Schutz, G.; Mazayev, A.; Martins, J.; Barradas, Álvaro
    The Internet of Things is expected to incorporate objects and sensor networks of all kinds, and in particular, constrained sensor networks where energy consumption is a critical issue. In order to increase the lifetime of such networks, intelligent and standard-based solutions should be used. Here, we address this challenge through the use of CoRE interfaces for the resource design. These interfaces allow the server side to compose/organize resources and the client side to discover and determine how to consume such resources, besides allowing decisions to be easily integrated into the operation of the network. An energy-aware resource design model is...

  4. Portable device for augmented reality: five-sense experiences

    Sardo, João Duarte Pereira
    Dissertação de mestrado, Engenharia Eléctrica e Electrónica, Instituto Superior de Engenharia, Universidade do Algarve, 2017

  5. Edifícios com consumo de energia nula: caso estudo – “eco-power zero résidence”

    Rio, João Manuel de Jesus
    Dissertação de mestrado, Engenharia Civil, Instituto Superior de Engenharia, Universidade do Algarve, 2017

  6. Freguesia de Cernache do Bonjardim. Territorio y patrimonio

    Gonçalves, Marta
    Este trabajo tiene como área de estúdio la freguesia de Cernache do Bonjardim, situada en el concelho de Sertã, distrito de Castelo Branco, en el centro de Portugal. Inserta en la zona verde más grande de Europa, la inmensidad espontânea de sus bosques de pino, invita a una fiesta de agua y sol com tranquilidad, calma y placer, donde las excursiones y deportes acuáticos se realizan sin prisa en los puntos de singularidad y belleza (VVAA, 2008). Com una superfície de 7 203 hectáreas y una población de alrededor de 4 000 habitantes, la freguesia de Cernache do Bonjardim, mezcla la ruralidad de sus lugares en el...

  7. Soil erosion, Serra de Grandola (Portugal)

    Fernandez, Helena; Martins, Fernando; Isidoro, Jorge; Zavala, Lorena; Jordan, Antonio
    Soil erosion has long been the subject of attention for environmental management researchers because it implies the loss of a key natural resource for sustaining life. Several methodologies for soil erosion assessment have been developed; many of these are supported by Geographic Information Systems. This study aims to classify the susceptibility of rainfall-induced erosion at the Serra de Grandola (Portugal), based on the Priority Actions Programme/Regional Activity Centre guidelines for mapping soil erosion on the Mediterranean coast. Results show a low-to-moderate susceptibility to rainfall-induced erosion in the lowlands, becoming moderate to high in the highlands of the Serra de Grandola.

  8. Classification of landforms in Southern Portugal (Ria Formosa Basin)

    Martins, Fernando; Fernandez, Helena; Isidoro, Jorge; Jordan, Antonio; Zavala, Lorena
    A Geographic Information Systems-based tool is used for macro-landform classification following the Hammond procedure, based upon a Digital Terrain Model (DTM) created from ordinary Kriging. Gentle slopes, surface curvature, highlands and lowlands areas are derived from the DTM. Combining this information allows the classification of terrain units (landforms). The procedure is applied to the Ria Formosa basin (Southern Portugal), with five different terrain types classified (plains, tablelands, plains with hills, open hills and hills).

  9. The (un)recognition of cultural heritage: the parish of Cernache do Bonjardim, Portugal

    Gonçalves, Marta Marçal; Pérez Cano, María Teresa
    In this parish of the centre of Portugal, heritage is essentially vernacular and could become a centre of knowledge and an attractive for the region. This heritage is not cur-rently recognized by the people who live there. The present article intends to make a survey of types of heritage of this territory, aiming to make it better known to allow its protection. This work discloses what might be recognized as an emerging, essentially ethnological heritage. The divulgation and awareness of heritage is important, whatever their category might be. When there is recognition of the heritage, this can now be seen...

  10. Heritage as a structuring factor of the territories' resilience

    Gonçalves, Marta; Pérez Cano, María Teresa; Rosendahl, Stefan
    This work results from a doctoral thesis, being applied to the parish of Cernache do Bonjardim, Portugal, which proved to be a very rich source of study. It was proved what was intuited: the Cernachense (natural from Cernache’s parrish) have a great sense of place and identity. Despite all the setbacks, the one who prefers to stay, is naturally enterprising and multifaceted. The research that underlies this subject has proven to increase the concern to maintain the heritage and the valorisation of the parish, as a result of the intrinsic curiosity of these people, with the desire to perceive and...

  11. On the trail of the storks. Proposal for a pedestrian circuit in Faro (Algarve, Portugal)

    Gonçalves, Marta
    A proposal for a pedestrian circuit in the city of Faro is presented, based on a “small” natural heritage - the White Stork (Ciconia Ciconia) - as a starting-point to become ac-quainted with the cultural architectural heritage. Faro has various cultural routes, but the origi-nality of this circuit consists on the fact that it highlights the cultural heritage of the town, pro-ceeding from an element of its natural heritage, which is one of the town’s landmarks and part of its genius loci. It is shown how a simple idea can enhance a locality and encourage the ex-ploitation of the local...

  12. O método da biónica num projecto de Design Técnico

    Rosendahl, Stefan; Pato, Alcina; Ros, Vasile; Gonçalves, Marta Marçal
    Usando o exemplo da estrutura interna de um coral, descreve-se a metodologia da Biónica, aplicada para a concepção de um filtro biocida para equipamento de ar condicionado. O efeito anti-bacteriano é obtido através de um revestimento interior de nanopartículas de prata.

  13. Almadrava: men and sea. Social relationship in a short-term community

    Batista, Nuno Miguel; Gonçalves, Marta
    Introduction: Description of the relationship men/sea, on a specific social and life context, in a fishing community temporarily settled in Faro beach, during the tuna fishing period. It was discovered that such a fishing community existed for long decades in this place, where almost 200 families lived only during tuna’s fishing season. This community only had limited and rudimentary resources, based exclusively on human strength. Nevertheless, they developed their own rituals, beliefs and way of living. Now everything is almost extinct. Objective: Report the specificities of the spatial organization and socio-economic relations of this Armação, encouraging the generational continuity, the awareness of this disappeared heritage, its...

  14. Renewing terraces and drystone walls of Algarvian Barrocal. Cultural and touristic values

    Gonçalves, Marta; Prates, Gonçalo Nuno Delgado; Rosendahl, Stefan
    This paper aims to enhance the functions of terraces and drystone walls as structural elements and distinctive factors of the traditional rural zone known as the barrocal of the Algarve, south of Portugal. In fact, such elements define the character of the landscape that forms the background of a traditional touristic region along the coast. The core of this paper will be the knowledge of construc-tion processes, spatial distribution, and hydrological, ecological, economic and social functions, once it is quite necessary for the Algarve region. Some projects and studies have been developed in the Mediterranean context, but there is not...

  15. Ritual of blessing the tuna fishing nets in Algarve (Portugal), between the 30's and 60's

    Batista, Nuno; Gonçalves, Marta
    This paper describes the religious blessing procedure of tuna fishing nets before being launched into the sea, in Algarve, between the decades 30 and 60, when it abruptly ended. The authors describe how blessing of tuna fishing nets was made, based on interviews with peo-ple involved in this art, using photos provided by those, complemented by documentary analysis and bibliographic research. In the course of the work it was discovered that such religious prac-tice took place in Faro beach, in Algarve, for long decades, involving almost 200 families that lived there temporarily for 4 months per year, each year. The...

  16. Estruturas mediterrânicas tradicionais. A utopia da paisagem urbano-turística do Algarve

    Bragança, Carlos; Gonçalves, Marta; Prates, Gonçalo Nuno Delgado
    Uma das características marcantes das paisagens mediterrânicas é a armação dos terrenos montanhosos em socalcos suportados por muros de pedra seca. Além do carácter identitário que imprimem na paisagem, as construções milenares em pedra seca estabelecem uma rede de compartimentação com várias funções ou utilidades, como suporte de terras, drenagem, armazenamento de águas, divisão de propriedade, limitação de caminhos e veredas. Para além destas funções, focar-nos-emos de forma especial nos valores sociais e éticos capazes de gerar alternativas de evolução da paisagem. No Algarve, se bem que os valores atribuídos pelas populações locais sejam determinantes nessa evolução, o papel dos turistas e população residente estrangeira pode, no entanto,...

  17. Building the landscape. Rehabilitation and renewal of traditional mediterranean structures

    Bragança, Carlos; Gonçalves, Marta
    One of the main features of Mediterranean landscapes, particularly in limestone areas, is the terraced land frame, usually supported by dry stone walls. In addition to the scenic aspects and landscape identity, network compartmentalization established by terraces, property division walls, pathways and traditional paths, shapes ecological corridors that frame the different human activities. It is a structure whose conservation is particularly important in areas of intense human impact, or rapid transformation, such as the urban-tourist spaces of the Algarve, where the hills displayed by such structures form the background scenario. In order to put in value their importance for landscape conservation and evolution, this presentation will focus on...

  18. Atributos de paragens de autocarro acessíveis

    Rosa, Maria Manuela Pires; Landim, Isabel
    O turismo acessível atende ao desenvolvimento de atividades turísticas por todas as pessoas, e considera as necessidades das que têm mobilidade reduzida. Acontece que no ambiente urbano e turístico há um conjunto de barreiras físicas que dificultam a mobilidade dos turistas com trolleys, dos pais com carrinhos de bebé e das pessoas com deficiência. Neste contexto, surgiu o conceito de “design universal” que assegura os direitos de acessibilidade a todos, incluindo as pessoas com necessidades especiais. De acordo com o Conceito Europeu de Acessibilidade "a acessibilidade é a característica de um meio físico ou de um objeto que permite a...

  19. Atributos de paragens de autocarro acessíveis

    Rosa, Maria Manuela Pires; Landim, Isabel
    O turismo acessível atende ao desenvolvimento de atividades turísticas por todas as pessoas, e considera as necessidades das que têm mobilidade reduzida. Acontece que no ambiente urbano e turístico há um conjunto de barreiras físicas que dificultam a mobilidade dos turistas com trolleys, dos pais com carrinhos de bebé e das pessoas com deficiência. Neste contexto, surgiu o conceito de “design universal” que assegura os direitos de acessibilidade a todos, incluindo as pessoas com necessidades especiais. De acordo com o Conceito Europeu de Acessibilidade "a acessibilidade é a característica de um meio físico ou de um objeto que permite a...

  20. Proposta metodológica para avaliação da acessibilidade universal em percursos pedonais: o caso do centro histórico de Faro

    Rosa, Maria Manuela Pires; Landim, Isabel; Loureiro, Nuno de Santos
    Num contexto de turismo acessível é necessária a existência de redes pedonais que detenham um conjunto de atributos de qualidade que garantam usabilidade por todos os cidadãos. Garantir um meio físico acessível é considerado um critério de qualidade, que torna as deslocações pedonais mais agradáveis, não só para idosos e pessoas com deficiência, mas para toda a população residente e turistas. No estudo de caso averigua-se se as características físicas das infraestruturas pedonais, de interesse cultural, localizadas no Centro Histórico de Faro, respeitam as exigências do Regime Jurídico Nacional da Acessibilidade. Formula-se uma metodologia de avaliação da acessibilidade universal das...

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