Browsing by Author "Ferreira, Ana Vaz"
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- Uma abordagm integrada para o sucesso dos estudantes do IPCBPublication . Ferreira, Ana Vaz; Silva, Ana Paula; Ribeiro, Ana RaquelSaraivaA promoção do sucesso escolar e o combate ao abandono exigem uma ação integrada por parte das instituições de ensino superior. Atuar em contexto de sala de aula não é suficiente, pelo que as estratégias devem abranger outros domínios que estão relacionados com a integração dos estudantes. A mudança do nível de ensino secundário para o ensino superior congrega um conjunto de novos desafios relacionados, em muitos caso, com o afastamento da família e a adaptação a um novo contexto, que provocam algum stress e ansiedade nos novos estudantes.
- Adapting portuguese architecture to former african colonies climate conditionsPublication . Ferreira, Ana Vaz; Silva, J.A. Mendes daThe Portuguese architecture is borderless due to the colonialism period. Many African countries can testify this influence and the cities still sprawling around remaining old buildings. These constructions are characterized by using local resources and adapting Portuguese architecture to the climatic characteristics and answering local natural hazards. The work developed presents a systematic approach about the constructive changes, identifying the solutions adopted for answering climatic demands. The passive solar systems used were categorized and some examples were selected according to examples found in African cities with Portuguese influence as Beira (Mozambique), Lubango, Namibe and Luanda (Angola) and Praia (Cape Verde). This analysis encompasses strategies to improve thermal behavior of buildings, as ventilation trough the analysis of ventilated roofs or windows geometry, shadowing devices as large eaves, brises and second facades, among other issues. The local construction was also analyzed in order to find out traditional techniques for cooling buildings in a natural way.
- An analytical approach to the ventilation effectiveness of mediterranean buildings: case study: existing residential building, PortugalPublication . Salehi, Atefeh; Torres, Isabel; Ferreira, Ana VazBuilding airtightness assumes an important role in the energy saving and the indoor thermal comfort. Ventilation rates bring significant impacts on energy usage in the constructions and indoor contaminant concentrations and also setting them as the key parameters in building performance. Ventilation rate have been measured in building for a long time, and there are some developed measurement methodologies related to it in the research domains. However, most of the investigations in recent years have been done usually in the cold climate conditions, while Mediterranean construction are not deeply investigated in the literature. In this paper, the authors present the obtained results of an experimental research which is carried out on the Portuguese residential buildings. The investigation is done by fan pressurization methods, also known as “Blower Door Test (BDT)” as the measurement method as well as Design Builder (DB) as the simulation software. The airtightness measurement of the existing buildings and the influence of air leakage on energy consumption and indoor comfort in different Portuguese construction typologies are focused on the aim of the research. The important parameters of the building such as whole-building air change rates, building infiltration rates, and ventilation effectiveness rate in the residential building are also considered in this research.
- Analysis of solar passive parameters application to housing buildingPublication . Ferreira, Ana Vaz; Silva, J.A. Mendes da; Abrantes, VitorThe paper presents a methodology of evaluation of buildings’ solar passive performance. This methodology was developed in agreement with quality levels for thermal parameters which were chosen according to the construction’s solar passive behaviour and the regulamentary concepts. A comparative study was organised in the context of a recently finished master’s dissertation between the legal frames of three European countries, giving special emphasis to the Portuguese case. The results of this study allowed the conclusion that it has become essential to combine minimum regulation values to methodologies that grant an evaluation and qualification of a building in terms of its thermal performance
- Are students and teachers ready for Bologna? A pedagogical project in a tourism coursePublication . Ferreira, Ana Vaz; Ramos, George; Cruchinho, Alexandra; Delgado, F.M.G.; Pereira, Paula; Sapeta, Paula; Afonso, PauloThe implementation of the Bologna process in higher education leads to rethinking the teaching-learning assumptions. Higher education today is focused on curricula, teaching-learning processes, subjects and course programmes attending to European credits system, teachers’ qualification and training, academic success and scholar results, performance standards, assessment of institutions, assessment of skills (and not merely knowledge). In 2010 a project (Construction of Learning | ConstAp) was developed in the Polytechnic Institute of Castelo Branco, Portugal. The main goal was to motivate the adoption of changes concerning classroom methodologies and students’ autonomous workload guidance in the scope of the Bologna process implementation. This paper presents a proposal of pedagogical intervention to deal with the mentioned objectives, a project applied in a specific tourism course. The paper presents the first results collected regarding the project’s implementation and seeks to impart a methodology that can be applied to similar courses.
- Assessment of ventilation effectiveness in exiting residential building in mediterranean countries: case study, existing residential building in PortugalPublication . Salehi, Atefeh; Torres, Isabel; Ferreira, Ana VazNatural ventilation as a part of a buildinǵs function that has a strong effect on human comfort. The reduction of natural ventilation and infiltration, as a part of the ventilation system in the old existing buildings, due to intervention actions, have been causing a reduction in indoor air quality and an increment of relative humidity levels in the indoor environment. Providing optimal indoor condition is not only related to the renewal of the air but also with its distribution. Hence airflow patterns in historical buildings influence interior comfort conditions. The aim of this work is to assess the effectiveness of the existing natural ventilation system in the old and historical buildings by different natural ventilation strategies. To achieve the proposed objective, the research was developed resorting to in-situ measurements and simulation methods The simulation was performed with the Design-Builder software and the main goal was answering to the following question: - What are the existing conditions of the building in concern of the airflow circulation and distribution? The in-situ measurements were performed using Blower Door Test method in order to determine the existing building airtightness. Based on the obtained results for each building the intention is answering the following question: - Due to the limitation of the historical urban areas, which natural ventilation strategy is more effective? The results of this research can be interesting for architects, engineers, and people, who are working on intervention and renovation of old existing buildings.
- Building's rehabilitation towards sustainable behaviourPublication . Silva, J.A. Mendes da; Ferreira, Ana VazTo achieve a sustainable building’s behaviour and preserve the environmental balance, three laws must be taken into account: (i) the resources’ consume must not be faster than the rate at which nature can restock them, (ii) the creation of systems that consume maximum energy-quality and (iii) the maximization of the use of renewable and recycled materials. Therefore, the buildings’ rehabilitation process must increase, instead of the proliferation of new buildings, in order to provide the sustainability of the built environment and minimize its ecological impact. The sustainable rehabilitation process is even more difficult in historical areas, in general sited in central zones of the urban mesh, with fragile comfort conditions and a rigid structure. In this paper, different evaluation tools for sustainable buildings were analysed in order to provide a set of evaluation criteria to be applied in the rehabilitation process in historical zones.
- Built environment: the sustainability of heritagePublication . Silva, J.A. Mendes da; Ferreira, Ana VazDifferent sustainable evaluation tools can provide a way to certify the building¬¬`s performance during its life cycle: raw material depletion, production of materials and components, construction, use and demolition. In this process, several variables that analyze common components, such as the reduction of resources consume, the reuse and recycle potential, flexibility and adaptability, the pollution components generated during the process, are involved. Some examples of these tools are the systems like SBTool, BREEAM, BEE or LiderA that are used to evaluate a specific context according to specific conditions. Meanwhile, the existing evaluation systems are oriented to the building´s design phase or have under consideration patterns adapted to the 21st century reality. This work was developed due to the need to analyse and evaluate the built environment, specifically in what concerns the urban settlements in Portuguese cities, with more than three hundred years old, and that are not enclosed in the new construction’s reality - both at materials and techniques levels. The knowledge gathered about the built environment allows the creation of a sustainable grid capable of guide-lining rehabilitation actions. The evaluation of these urban areas was carried out based on an exhaustive work of collecting the building’s characteristics, in an area with around 770 buildings, allowing the creation of a built environment sustainability evaluation grid and adapted to socio, cultural, heritage, economic and environmental contexts. The grid mentioned before was designed after a set of parameters were analyzed, such as: i) the existent materials and the constructive solutions adopted; ii) the urban mesh and the meeting of the construction resources to the built environment; iii) the contemporaneous patterns and the possibilities of reusing; iv) the heritage and cultural values; v) the social and economic values. The evaluation grid presented in this work shows a set of different parameters, where the criteria that are related to the external environment are reassessed according to the existent urban possibilities and where the criteria related to internal environment are adapted to the existent spaces’ possibilities.
- Caracterização construtiva de aldeias do Parque Nacional da GorongosaPublication . Mendes, Michael; Ferreira, Ana VazO Parque Nacional da Gorongosa foi criado em 1960 e possui 4.067 km2 que integra a Serra da Gorongosa, sendo que em 2008 foi estabelecida uma Parceria Público-Privada de 20 anos para a gestão conjunta do PNG entre o Governo de Moçambique e a Fundação Carr (EUA). O projeto do Parque envolve ainda as comunidades locais que vivem próximas ao parque natural. Este trabalho consiste num trabalho efetivo de caracterização das habitações tradicionais locais e dos modos de construir existentes no parque. Importa perceber as soluções utilizadas, compreendendo o seu funcionamento no que respeita à relação com o clima local, assim como com a resistência e durabilidade das habitações. O objetivo principal consiste na identificação e caracterização dos sistemas construtivos aplicados em 3 aldeias do Parque Nacional da Gorongosa. Pretende-se que esta caracterização seja construtiva, do ponto de vista dos materiais e soluções aplicadas, assim como mecânica através da caracterização em termos da sua resistência e composição. Ao mesmo tempo, pretende-se dentro das soluções construtivas mais utilizadas nas aldeias em estudo averiguar a sustentabilidade, aplicando uma metodologia de avaliação relativa da sustentabilidade. De facto, em Moçambique são recorrentes as construções com terra, a tecnologia mais usual é a terra de recobrimento, apesar do preconceito em relação a este tipo de construções associadas à pobreza o que provoca o seu desprezado pela sociedade. Desta forma, é necessária uma conscientização da população para a execução deste tipo de construções como forma alternativa para a melhoria das condições de habitabilidade da população. Partindo duma matéria prima considerada frágil e caracterizando os materiais que servem de base para o presente estudo, demonstra-se as qualidades e a sustentabilidade dos referidos materiais para a aplicação nas construções de baixo custo e possibilitando assim acesso à construção ultrapassando o difícil acesso dos materiais.
- Colonial moorings on spatial planning of MozambiquePublication . Santos, Michael M.; Ferreira, Ana Vaz; Lanzinha, João CarlosEach country has its spatial planning system, which comprises several instruments and objectives focused on city issues and territorial development. On June 25, 1975, the independence of Mozambique was proclaimed, following the end of the colonial war with the military coup of April 25 in Portugal and the Lusaka agreements on September 7, 1974. Consequently, a new framework establishes the bases of public policies for this country, whose main objective is to fulfill territorial quality concerning the collective culture that integrates the local cultural values. Mozambique was an administrative part of Portugal until 1975. There is still a substantial identity between the two countries, sharing the same language and politics, cultural aspects, and administrative organization. In this sense, the present study aims to present a comparative analysis between Mozambique and Portugal's spatial planning systems, seeking to find common characteristics. In conclusion, this research shows similarities based on spatial land use in Mozambique and Portugal. However, there is a clear contrast between land ownership and access. The level of implementation at a diverse level is notorious. We highlight the example of Beira which has a comprehensive plan based on sustainable development and climate-change-resilient mitigation proposals.