Repositório RCAAP

Este artigo faz uma pequena contextualização histórica sobre o desenvolvimento do motor síncrono de relutância, descreve a suaconstituição, aborda o seu princípio de funcionamento e descreve o seu modelo matemático e principais características.

A ABB enquanto líder de referência mundial em infraestruturas para carregamento de veículos elétricos, temrespondido a um dos maiores desafios da atualidade – a mudança acelerada do paradigma da mobilidade, comsoluções de eletrificação e conectividade de infraestruturas, transversais a distintos perfis de uso e de exploração. Desdeos autocarros elétricos e híbridos, utilitários, comerciais, camiões, navios e ferrovias.

O forte incremento nos veículos elétricos e suas necessidades de carregamento têm acarretado grandes desafios à gestãoda rede de distribuição, nomeadamente, na alteração da sua qualidade de serviço.Este artigo propõe uma metodologia para avaliar o impacto de diferentes modos de carregamento numa rede residencialduma cidade espanhola. Trata-se duma rede em BT com 8087 consumidores, para a qual foram simulados diferentescenários de funcionamento e foram analisados os valores apresentados para quatro variáveis críticas. Os índices dequalidade resultantes são comparados com os limites padrão fixados pela norma de referência EN50160.Constatou-se que, na generalidade, a concentração dos modos de carregamento nos parques de estacionamento levaa piores índices de qualidade de serviço, sendo determinado o modo de carregamento mais conveniente para cadalocalização. Foi também verificado que o desequilíbrio de tensão é a variável mais influenciada pela localização dosmodos de carregamento.

Os veículos elétricos (VE), em primeiro lugar, são a solução para a redução da poluição rodoviária nas cidades e, emsegundo lugar, irão também contribuir fortemente para a redução da poluição global, dado que a sua contribuição nãoé negligenciável. A sociedade ciente destes problemas está a aumentar a sua aquisição, ajudada pelo aumento da ofertade mais e melhores VE, cada vez mais baratos ou mesmo com um preço inferior às tecnologias clássicas. Na aquisiçãode um VE, um dos pontos mais críticos em análise é o custo do seu carregamento nas redes domésticas, públicas ouprivadas. Neste artigo são analisados, com todo o detalhe, os carregamentos efetuados durante uma viagem pelo autor aMiranda do Douro. Com a finalidade de validar os resultados obtidos, são também analisados os custos de carregamentode outros dois VE nas redes de carregamento.

Apesar da trágica crise da Covid-19, a situação pandémica tem impulsionado a transição energética global e o crescimento da tecnologia do Hidrogénio (H2). Vários países têm anunciado políticas para acelerar o desenvolvimento da indústria deste combustível e, ao mesmo tempo, explorado estratégias para impulsionar a sua inovação, aspeto crucial para reduzir os custos e melhorar o desempenho do eletrolisador. O hidrogénio pode ser obtido de diferentes fontes de matérias-primas sendo uma das principais a água, através do uso de eletrolisadores de hidrogénio que efetuam a eletrólise. Apesar dos eletrolisadores serem conhecidos há mais de dois séculos, as atuais tendências tecnológicas têm influenciado o seu desenvolvimento e as suas aplicações na indústria. O princípio da eletrólise da água é simples, no entanto, as diferenças no eletrólito e temperatura de funcionamento orientam a construção de diferentes tecnologias que, por sua vez, conduzem à seleção de diferentes componentes e métodos de produção de H2. Neste artigo é caraterizada a tecnologia de obtenção de H2 pelos equipamentos atualmente comercializáveis, como é o caso dos eletrolisadores: alcalinos, de óxido de sódio e os de membrana de protões. São apresentados os seus modos de funcionamento e as suas caraterísticas. É elaborada uma análise comparativa entre as diferentes tecnologias, com base em dados técnicos recolhidos e informação disponibilizada pelos agentes económicos.

O setor da produção de energia elétrica é um dos grandes responsáveis pela emissão de gases de efeito de estufa para a atmosfera, não só de dióxido de carbono como outros poluentes. As centrais a gás de ciclo combinado com turbina a gás (CCTG) contribuem fortemente para esta poluição pois, atualmente, são as únicas centrais térmicas de grande porte em operação no sistema elétrico nacional. Pela sua reconhecida importância no setor elétrico e o seu impacto ambiental, é de extrema importância adotar medidas que promovam a minimização das emissões, sem comprometer o correto funcionamento dos equipamentos e a sua eficiência energética.A utilização do Hidrogénio nas turbinas a gás em co-combustão com o gás natural é uma inovação anunciada para as centrais de CCTG, assumindo para estas instalações um papel essencial na transição energética. As caraterísticas físicas do H2 facilitam esta co-combustão, com um potencial técnico e económico que prometem contribuir para um futuro energético limpo, seguro e acessível.Este artigo identifica as principais implicações técnicas da queima do hidrogénio em turbinas a gás e os benefícios obtidos ao nível da redução das emissões de CO2, quer do ponto de vista ambiental, quer do ponto de vista económico, fazendo referência às licenças de emissões

The necessity to communicate encouraged the prehistoric man to develop technology to tell their story to subsequent generations, appearing thus the first representative signals of everyday life. After centuries, this reproduction process of learning was being improved until we get to modern writing. In this article, we tried to stick to the knowledge of symbols and the creation of pictograms and their effectiveness in various application contexts, considering concepts of rationality and objectivity of the Positivist philosophy postulated by Otto Neurath, founder of the modern Isotype system pictographs (International System of Typographic Picture Education) and its application in the educational field. Still, they are considered the cognitive processes for creation and interpretation, in which designers and users should be immersed in the same repertoires to make an affect communication. The study generated a reflection on the effectiveness of symbolic communication in light of these processes, motivating us to draw parallels between the current communication through pictograms and emoticons with the old hieroglyphs developed by the egyptians.

Public health is the issue that most concerns the Brazilians. Problems such as lack of investment in public policies for the prevention of diseases, shortage of doctors, equipment and scrap hospitals end up contributing to negative public health in Brazil. This study presents the development of an electronic device capable of measuring blood pressure and send the result of the determination for a web platform in order tofacilitate medical care, especially in hard to reach places. For web platform we used the C ++ language program that every 30-minute interval triggers the pressure unit to enable it to perform the measurement, then the data is sent to the Web Service. To read the data sent was developed a Web Site, where the doctor accesses the internet. As a result, we obtained an electronic device for blood pressure measurement, whose main components are a PA monitor and Arduino UNO. After riding the prototype, this was properly calibrated and tested on three individuals. There has been much success in measuring (which did not differ as to monitoring only used with the monitor) and send the data to the system.

Occupational diseases are caused by work activities, usually from overuse of the musculoskeletal system. In routine dental work, given that professional / interface dental furniture, may have physical problems related to the performance of their activities. Inappropriate furniture, lack of breaks lead to the emergence physical disorders such as injuries or aches and professional distance. The aim of this study was to verify the presence  of occupational diseases for professionals who perform dental care. At this applies, dentists, assessment protocol postural discomfort, which concluded that when the dental office is not organized taking into account the concepts and ergonomic equipment is used in order to force a wrong posture , the dentist may suffer physical ailments.

The Department of Education of São Paulo launched in 2012 the course “English Online”, created by the Virtual School of Educational Programs of the State of São Paulo (Evesp) for the high school students from public schools. After three years, the perception of the Pedagogical Coordination for Modern Foreign Language in the city of Bauru (Brazil) is the increased student dropout rate and the decrease in subscribers in the virtual platform. To investigate the causes, the article set out to see what impacts the usability of the site, from the experience of the primary user (Cybis, Bettiol, Holtz, 2007) with students from the first year of the high school in the city of Bauru. The research indicates that there isn´t a great rejection of the students to the virtual interface “English online”. What leads to the conclusion that reducing the number of subscribers and evasion cannot be directly related to the usability.

This paper presents a proposal of urban intervention that meets quickly to changes in the volume of pedestrian traffic throughout the day, changing the spaces reserved for pedestrian traffic and vehicles through interactive signaling system using automated retractable bollards to delimit tracks along the avenue.

The ongoing research aims at understanding the role of design in management and strategic communication of projects in co-creation systems, whose goal is to create a facilitator model of processes that promote and develop products – bicycle ecosystems services. We strive to reinforce the bicycle identity character in the Aveiro region, since, up to the mid-20th century, bicycles used to incorporate the routines of families in this region. However, the importance of bicycles decreased over time, mostly due to the growing prominence of cars in the city. Bearing in mind that identity is a process in permanent mutation, contemplating habitus, we consider that the development of a new sense of belonging concerning bicycles entails their introduction in early childhood education. From this perspective, we present a set of projects designed in accordance with the goals set by Horizon 2020, hoping to create experiences that may integrate bicycles into the community habitus, being experience here understood as the “result of common phenomena experienced both collectively and individually and kept in memory.” (Rodrigues, 2003:10).

The presented study elicits the behaviour of tourists during the tourist experience through the use of trains in Belgium, so that the results obtained can help the future development of a mobile application that enhance the tourist experience. In order to achieve this, the user is involved in the early phase of the product development’s process through the use of human-centred design methodologies. Throughout the study three different qualitative user researches are planned and carried out: observations, focus group interviews and board games as generative tool.

This article presents a contribution of industrial design in the urban mobility area. A topic widely discussed when referring to current urban problems. The transportation design is an area that proposes the development of products and systems designed for mobility, and in this article, we work sustainability in the creation of new transport solutions, more specifically, the concept of an autonomous car to the city of Rio deJanuary. To achieve this goal, research was conducted in conjunction with public transport organs that define the city's transport policies. A literature search up data on urban mobility, ergonomics, sustainability, social design, user needs, and probable materials and technologies less harmful to the environment that could be the basis for the construction of the project. The result is an autonomous vehicle concept well accepted by the public and subsequently awarded in design contest.

This paper presents a group of perspectives and views on concepts and design principles currently used in major operating systems for mobile or small screen devices. We show the need to focus in the area since the interaction interface design in these devices is a challenge for designers and to enable a rich user experience has not been an easy task. Treating as a solution line, we highlight the concept of flat design which has allowed a better visual organization of the interface and from the Material Design, enables a conceptual approach, rich and endowed with sense when the focus is on small screens.

Ergonomics is the science responsible for the suitability of the employee´s working conditions and its use can provide better performance, greater comfort and safety in the execution of several tasks. It is an interdisciplinary science, which has connections with Design and can contribute to the development of optimized and functional products that are not harmful to human health. Throughout the development of a product, it is necessary to develop studies and tests that can be perfomed through models, mock-ups and prototypes. These models may be produced with different methods, by handmade techniques or automated and digital processes, such as Rapid Prototyping (RP) technologies, for example. This study aimed to compare two mock-ups of vegetables peelers, which were produced in different ways - one produced with epoxy resin (“Durepoxi”), and another by a subtractive RP technology, using the CNC milling machine Roland MDX 540. For comparative purposes, the price, the production time, the quality and surface finishing, dimensional accuracy and ergonomics were considered asvariables. In the end of this study, two distinct models, with advantages and disadvantages in different aspects were obtained, and those production techniques can be combined in order to achieve a more complete and profitable product development process (PDP) as a result.

The natural aging process induces physical limitations, intending with this article analyze the behavior of senior and pre-senior drivers during ingress and egress of cars. The goal is to identify the parts of the interior of the car that should be changed or adjusted to the physical condition of these drivers to facilitate the executive function of getting in andout. The methodological process is based on visual studies using photography and video, with behavioral analysis of senior users in new car models, not before experienced by those, obtained over four days at the Geneva Motor Show in March2016.With this visual study, we aim to provide useful information related to the current devices and adaptations applied to the automobile, to achieve inclusive design and enhance universal design processes in future vehicles. This study concluded that newer car models, are still not fully available friendly design solutions and adjusted to the physical limitations of senior drivers, particularly during the process of entry (ingress) and exit (egress) of vehicles. From this research we identified which car types are the best to reduce this problem.

This paper aims to present the “Deep Painting” project developed at the University of XXXXX. Deep Painting is based on the design and development of a working prototype, using Augmented Reality which will culminate in an application for the Aveiro Museum. This application wants to take advantage of a set of methods and imaging techniques (Infrared, X-Ray and, Ultraviolet) available at Aveiro Museum, which will allow revealing hidden information and underlying drawing paintings over the last centuries. The application is under development, however, some usability pre-tests to assess the interface design, have already been made.

This article emphasizes the development of a multimedia project implemented in the artistic context of the dance, which culminates in the insertion of the show “o que fica” produced by Dancenter academy in AveiroThe project, paint in movement, built based on a co-authoring process, seek represent the works of abstract expressionism Jason Pollock, in a digital and interactive way, using kinect Microsoft Xbox and Processing software.

This article evidences the possibilities of social inclusion presented by collaborative methodologies applied to Visual Identity projects that value the collectivity and the culture of a people or place. For that, a theoretical review was developed to present the current challenges of design, as well as the methodologies that value the human being and that are developed in a collective way, in order to offer socially inclusive solutions. Having as reference the visual identity project developed for the city of Porto (Portugal), the paper indicated that through design is possible to reach socially inclusive results that value the culture and create a sense of collective belonging.