Heterodox economics approach to business co-operation

Purpose- Economics and business have evolved as sciences in order to accommodate more of ‘real world’ solutions for the problems approached. In many cases, both business and economics have been supported by other disciplines in order to obtain a more complete framework for the study of complex issues. The aim of this paper is to explore the contribution of three heterodox economics disciplines to the knowledge of business co-operation. Design/methodology/approach- This approach is theoretical and it shows that many relevant aspects of business co-operation have been proposed by economic geography, institutional economics, and economic sociology. Findings- This paper highlights the business mechanisms of co-operation, reflecting on the role of places, institution and the social context where businesses operate. Research Implications- It contributes with a theoretical framework for the explanation of business co-operations and networks that goes beyond the traditional economics theories. Originality/value- This paper contributes with a framework for the study of business co-operation both from an economics and management perspective. This framework embodies a number of non-quantitative issues that are critical for understanding the complex networks in which firms operate.

Optical Filter Design Using Background Wavelength Processing Techniques

Amorphous SiC tandem heterostructures are used to filter a specific band, in the visible range. Experimental and simulated results are compared to validate the use of SiC multilayered structures in applications where gain compensation is needed or to attenuate unwanted wavelengths. Spectral response data acquired under different frequencies, optical wavelength control and side irradiations are analyzed. Transfer function characteristics are discussed. Color pulsed communication channels are transmitted together and the output signal analyzed under different background conditions. Results show that under controlled wavelength backgrounds, the device sensitivity is enhanced in a precise wavelength range and quenched in the others, tuning or suppressing a specific band. Depending on the background wavelength and irradiation side, the device acts either as a long-, a short-, or a band-rejection pass filter. An optoelectronic model supports the experimental results and gives insight on the physics of the device.

Optimal design for active damping in sandwich structures using the Direct MultiSearch method

This paper addresses the problem of optimal positioning of surface bonded piezoelectric patches in sandwich plates with viscoelastic core and laminated face layers. The objective is to maximize a set of modal loss factors for a given frequency range using multiobjective topology optimization. Active damping is introduced through co-located negative velocity feedback control. The multiobjective topology optimization problem is solved using the Direct MultiSearch Method. An application to a simply supported sandwich plate is presented with results for the maximization of the first six modal loss factors. The influence of the finite element mesh is analyzed and the results are, to some extent, compared with those obtained using alternative single objective optimization. (C) 2013 Elsevier Ltd. All rights reserved.

Design of a Multiband Full-Rate Ultra-Wideband Receiver in FPGA

MultiBand OFDM (MB-OFDM) UWB [1] is a short-range promising wireless technology for high data rate communications up to 480 Mbps. In this paper, we have designed and implemented in an Virtex-6 FPGA an MB-OFDM UWB receiver for the highest data rate of 480 Mbps. To test the system, we have also implemented an MB-OFDM transmitter and an AWGN generator in VHDL and determined the bit error rates at the receiver running in an FPGA.

Os programas de matemática do ensino básico de 1990 e de 2007 e o processo de implementação do programa de 2007, no 1º ciclo do Ensino Básico

Mestrado em Educação Matemática na Educação Pré – Escolar e nos 1.º e 2.º Ciclos do Ensino Básico

The problems of the european union film industry: an evolution from "subsidy trap" to the advent of "virtual print fee" model

Dissertação de Mestrado, Gestão de Empresa (MBA), 16 de Julho de 2013, Universidade dos Açores.

Avaliação auditiva de comunidades escolares portuguesas: Audiologia Escolar versus Rastreio Auditivo

Estudo da incidência da perda auditiva e de problemas otológicos em comunidades escolares do Norte do país de um totalde 2550 participantes, entre os 3 e os 17 anos de idade. Desenho do Estudo: Levantamento estatístico nas próprias instituições de ensino sendo realizado um protocolo de avaliação auditiva de rastreio. Material e Métodos: A todos os participantes foi realizado o mesmo protocolo de avaliação que consistiu numa anamnese audiológica, otoscopia e exame audiométrico de rastreio, sendo considerado como critério de inclusão a autorização prévia por parte do encarregado de educação. Resultados: Foram identificados diversos problemas otológicos e a audiometria tonal de rastreio contabilizou limiares auditivos indicativos de hipoacusia, uni e bilateralmente, em cerca de 5,7% dos casos. Conclusões: O rastreio auditivo deve ser realizado o mais precocemente possível e fazer parte integral dos cuidados de saúde primários, de modo a orientar a criança para uma educação e acompanhamento apropriados.

Design and performance of a novel low-density parity-check code for distributed video coding

Low-density parity-check (LDPC) codes are nowadays one of the hottest topics in coding theory, notably due to their advantages in terms of bit error rate performance and low complexity. In order to exploit the potential of the Wyner-Ziv coding paradigm, practical distributed video coding (DVC) schemes should use powerful error correcting codes with near-capacity performance. In this paper, new ways to design LDPC codes for the DVC paradigm are proposed and studied. The new LDPC solutions rely on merging parity-check nodes, which corresponds to reduce the number of rows in the parity-check matrix. This allows to change gracefully the compression ratio of the source (DCT coefficient bitplane) according to the correlation between the original and the side information. The proposed LDPC codes reach a good performance for a wide range of source correlations and achieve a better RD performance when compared to the popular turbo codes.

Comportamento à fadiga de juntas soldadas de aços tipo 460M com fios fluxados

Trabalho Final de Mestrado para obtenção do grau de Mestre em Engenharia Mecânica

Análise do padrão de recrutamento abdominal em crianças com dor espinal, entre os 7 e os 10 anos, durante a flexão rápida do ombro, com recurso a electromiografia de superfície

Estudos epidemiológicos dão conta de um aumento exponencial de crianças que reportam dor espinal nalgum momento da vida, tendo-se vindo a atribuir a esta um interesse crescente. Nesta sequência têm vindo a ser estudados factores de risco para a dor espinal, cujo leque tem aumentado devido ao contexto social em que nos inserimos. Um dos aspectos sobre o qual recai a nossa investigação relaciona-se com a activação muscular nas crianças com dor espinal, aspecto ainda não estudado nesta população em particular. A literatura indica que, na população adulta sem dor espinal existe pré-activação muscular abdominal aquando da flexão rápida do ombro e a maioria dos estudos revistos apontam para a inexistência da mesma nos indivíduos com dor espinal. Apesar disso, não existem evidências que o demonstrem em crianças pelo que o nosso estudo pretende descrever o padrão de recrutamento abdominal utilizado pelas crianças com dor espinal, aquando do movimento rápido do membro superior bem como analisar os principais factores de risco. Para recolha dos dados utilizou-se o Questionário de Dor Adaptado, para rastrear a amostra com dor espinal e descrever a sua história ocupacional, e Electromiografia de Superfície, com utilização do acelerómetro, que nos deu conta do início do movimento. Os dados obtidos neste estudo indicam que existe activação muscular abdominal, no momento imediatamente prévio ao início do movimento de flexão do ombro, em quase toda a musculatura abdominal, em crianças com dor espinal excepto em dois participantes que revelam um atraso na activação do músculo oblíquo interno direito e num outro que revela um atraso na activação do recto abdominal. Um dos participantes apresentou pré-activação em todos os músculos estudados. Isto provavelmente encontra-se relacionado com o processo de maturação e indica que possivelmente esta é uma boa altura para prevenir a evolução da dor e possíveis futuros problemas ocupacionais daí advindos, como faltar ao trabalho e ter uma baixa participação social. Estudos futuros devem debruçar-se sobre esta temática e sobre a delineação de novos programas, desta feita de prevenção, de modo a evitar problemas ocupacionais na idade adulta, já que crianças com dor são mais susceptíveis de se tornarem adultos com dor crónica.

Water quality issues in rivers, lakes and reservoirs in Asian countries: an approach to the problems and the methodologies

Water covers over 70% of the Earth's surface, and is vital for all known forms of life. But only 3% of the Earth's water is fresh water, and less than 0.3% of all freshwater is in rivers, lakes, reservoirs and the atmosphere. However, rivers and lakes are an important part of fresh surface water, amounting to about 89%. In this Master Thesis dissertation, the focus is on three types of water bodies – rivers, lakes and reservoirs, and their water quality issues in Asian countries. The surface water quality in a region is largely determined both by the natural processes such as climate or geographic conditions, and the anthropogenic influences such as industrial and agricultural activities or land use conversion. The quality of the water can be affected by pollutants discharge from a specific point through a sewer pipe and also by extensive drainage from agriculture/urban areas and within basin. Hence, water pollutant sources can be divided into two categories: Point source pollution and Non-point source (NPS) pollution. Seasonal variations in precipitation and surface run-off have a strong effect on river discharge and the concentration of pollutants in water bodies. For example, in the rainy season, heavy and persistent rain wash off the ground, the runoff flow increases and may contain various kinds of pollutants and, eventually, enters the water bodies. In some cases, especially in confined water bodies, the quality may be positive related with rainfall in the wet season, because this confined type of fresh water systems allows high dilution of pollutants, decreasing their possible impacts. During the dry season, the quality of water is largely related to industrialization and urbanization pollution. The aim of this study is to identify the most common water quality problems in Asian countries and to enumerate and analyze the methodologies used for assessment of water quality conditions of both rivers and confined water bodies (lakes and reservoirs). Based on the evaluation of a sample of 57 papers, dated between 2000 and 2012, it was found that over the past decade, the water quality of rivers, lakes, and reservoirs in developing countries is being degraded. Water pollution and destruction of aquatic ecosystems have caused massive damage to the functions and integrity of water resources. The most widespread NPS in Asian countries and those which have the greatest spatial impacts are urban runoff and agriculture. Locally, mine waste runoff and rice paddy are serious NPS problems. The most relevant point pollution sources are the effluents from factories, sewage treatment plant, and public or household facilities. It was found that the most used methodology was unquestionably the monitoring activity, used in 49 of analyzed studies, accounting for 86%. Sometimes, data from historical databases were used as well. It can be seen that taking samples from the water body and then carry on laboratory work (chemical analyses) is important because it can give an understanding of the water quality. 6 papers (11%) used a method that combined monitoring data and modeling. 6 papers (11%) just applied a model to estimate the quality of water. Modeling is a useful resource when there is limited budget since some models are of free download and use. In particular, several of used models come from the U.S.A, but they have their own purposes and features, meaning that a careful application of the models to other countries and a critical discussion of the results are crucial. 5 papers (9%) focus on a method combining monitoring data and statistical analysis. When there is a huge data matrix, the researchers need an efficient way of interpretation of the information which is provided by statistics. 3 papers (5%) used a method combining monitoring data, statistical analysis and modeling. These different methods are all valuable to evaluate the water quality. It was also found that the evaluation of water quality was made as well by using other types of sampling different than water itself, and they also provide useful information to understand the condition of the water body. These additional monitoring activities are: Air sampling, sediment sampling, phytoplankton sampling and aquatic animal tissues sampling. Despite considerable progress in developing and applying control regulations to point and NPS pollution, the pollution status of rivers, lakes, and reservoirs in Asian countries is not improving. In fact, this reflects the slow pace of investment in new infrastructure for pollution control and growing population pressures. Water laws or regulations and public involvement in enforcement can play a constructive and indispensable role in environmental protection. In the near future, in order to protect water from further contamination, rapid action is highly needed to control the various kinds of effluents in one region. Environmental remediation and treatment of industrial effluent and municipal wastewaters is essential. It is also important to prevent the direct input of agricultural and mine site runoff. Finally, stricter environmental regulation for water quality is required to support protection and management strategies. It would have been possible to get further information based in the 57 sample of papers. For instance, it would have been interesting to compare the level of concentrations of some pollutants in the diferente Asian countries. However the limit of three months duration for this study prevented further work to take place. In spite of this, the study objectives were achieved: the work provided an overview of the most relevant water quality problems in rivers, lakes and reservoirs in Asian countries, and also listed and analyzed the most common methodologies.

Formação em Universal Design for Learning

Na qualidade de Diretora Regional das Comunidades, fomos responsável pela redação dos artigos e coordenação da página "Comunidades", integrada no jornal Açoriano Oriental, servindo a mesma para a divulgação das atividades realizadas pela Direção Regional Das Comunidades do Governo dos Açores.

A aprendizagem da divisão: um olhar sobre os procedimentos usados pelos alunos

Este artigo apresenta e discute alguns aspetos sobre a aprendizagem da divisão com números naturais, focando-se nos procedimentos usados por alunos de uma turma do 3.º ano na resolução de tarefas de divisão. Os resultados apresentados fazem parte de uma investigação mais abrangente que teve como finalidade a compreensão do modo como os alunos aprofundam a aprendizagem da multiplicação numa perspetiva de desenvolvimento do sentido do número. A investigação realizada seguiu uma metodologia de design research, na modalidade de experiência de ensino. A análise das produções escritas dos alunos e de episódios de sala de aula relativos às discussões coletivas sobre as resoluções das tarefas propostas mostra que os alunos usam uma diversidade de procedimentos e que estes evoluem significativamente ao longo da experiência de ensino. Esta evolução parece ser suportada pelas características das tarefas, os seus contextos e números, assim como pela articulação, desde logo estabelecida, entre a divisão e a multiplicação. Além disso, o recurso ao modelo retangular parece, também, ter contribuído para a progressão para procedimentos multiplicativos, baseados na decomposição de um dos fatores. Os resultados do estudo permitem ainda perceber que a evolução dos procedimentos usados pelos alunos e a sua diversidade não são alheias ao ambiente de sala de aula construído.

Açores recebe Congresso Internacional de Universal Design for Learning

Na qualidade de Diretora Regional das Comunidades, fomos responsável pela redação dos artigos e coordenação da página "Comunidades Açorianas no Mundo", integrada no jornal Mundo Português, servindo a mesma para a divulgação das atividades realizadas pela Direção Regional Das Comunidades do Governo dos Açores.

Convergência para NZEB de um edifício classificado

Dissertação para obtenção do grau de Mestre em Engenharia Civil na Área de Edificações