Search

The new information and communication technologies (ICTs), through virtual and augmented realities, present themselves as innovative and useful digital tools in many different areas. The educational scenario, in the current context of a constant and ever-changing world, requires a pedagogical approach in constant transformation and innovation within the digital culture. This research will present an overview on the stage of VR current apps and educational relation with them and propose the beginning of adoption of this technology on classes as part of a work that seeks to create a social innovation experiment with public school teachers for the newly created “Media-Education” discipline in order to disseminate virtual reality and 360° camera knowledge and applications, as well as to understand how schools and educators are up to date and are positioning themselves in front of the new technologies. It is mandatory to be updated on the new apps and technologies and create new approaches where virtual reality can be a useful tool.

Neste artigo é apresentado o desenvolvimento de elementos aerodinâmicos paraum veículo de competição tipo Baja SAE. A competição Baja SAE envolveinstituições de ensino de todo Brasil, seus eventos já são tradicionais e envolvemuma grande quantidade de estudantes de diversas áreas de Engenharia. Em geralos projetos dos estudantes focam elementos essenciais nos carros como tração,suspensão, freios, porém se tem observado que elementos de aerodinâmica nãotêm despertado interesse das equipes. Buscando contribuir com o item deaerodinâmica descrito no regulamento da competição, este artigo aborda ospontos principais da aplicação de elementos aerodinâmicos em um protótipo BajaSAE típico. Espera-se com isso fomentar o interesse de estudantes para estedomínio e prover um método de incremento de desempenho destes veículos.

In this paper, we estimate the impact of alternative materials and manufacturing when designing toys considering both the impact on children health and on the environment. In order to achieve this goal, we have proposed to design a geometric box set that can be 3D printed with a material prepared with beetroot puree. Although the results have showed it is possible to obtain functional properties using alternative greener materials manufactured with additive prototyping machines, it was expected that the impact on the environment could be more significant. In other words, in addition to innovation in materials, which in this case end up providing a safer product for children, much more need to be done in other steps of the design and production chain in order to reduce gas emissions.

Neste estudo é proposto um método para resolução de problemas de tangências, especificamente para o décimo caso do problema de Apolônio. Este método é baseado na transformação geométrica inversão e no uso do conceito de feixes de circunferências. Além de permitir a resolução de todas as configurações do problema, ele é aplicável também à resolução de outros problemas. Através do trabalho indicamos a importância do tema Desenho Geométrico no ensino de Desenho que há muito tempo enfatiza apenas o desenvolvimento da visualização espacial. Destacamos ao longo do texto como o ensino de Desenho Geométrico pode ser utilizado eficazmente para fomentar o raciocínio lógico-dedutivo dos estudantes através da prática de demonstrações. A new method to solve the tenth case of Appolonius problem is presented in this study. This method is based on the geometric transformation called inversion and the concept of coaxal circumferences. Besides allowing the resolution of all configurations of the problem, it can also be used to solve other problems. We indicate the importance of the subject about geometric constructions in teaching Drawing, which, since a long time ago has given attention only to the development of the spatial visualization ability. We detach along the text how the teaching of geometric construction can be used efficiently to foment the deductive logical reasoning of the students through the practice of demonstrations.

Neste estudo são avaliadas três atividades com relação a seus efeitos no desenvolvimento da habilidade de visualização espacial. Elas são baseadas respectivamente em aplicações de desenho técnico, modelos de arame e modelos de sólidos. Na terceira atividade há também exercícios em que são utilizadas máquinas com comando numérico. A avaliação foi realizada com base em ontuãções obtidas por estudantes no teste MRT, após a prática das atividades em mini cursos experimentais, os quais foram aplicados segundo o método de planejamento experimental chamado Julgamentos Cruzados, e os dados obtidos, analisados de acordo com um método Bayesiano. Concluiu-se que a atividade em que foram utilizadas aplicações de desenho técnico tem maior potencial para desenvolver a habilidade de visualização espacial, quando comparada com as outras, em que foram utilizadas respectivamente aplicações de modelos de sólidos e de arame. The effects of three pedagogical activities concerning their effects on the development of spatial visualization skills are presented in this study. Those activities are based respectively on the interpretation and generation of technical drawings, wireframe models, and finally on the generation and interpretation of solid models. In the third activity it has also exercises where numerical controlled machines are used. The activities were applied to a group of under-graduate students in the form of short courses, and the results were measured by MRT testing. The crossover experimental design was used to organize the order of activities and to facilitate the drawing of meaningful conclusions. The statistical analysis was performed according by Bayesian methods. It is concluded that the activity that uses applications of technical drawings has more potential to develop spatial visualization skills.

The Hough transform is a feature extraction technique used in image analysis, computer vision and digital image processing. Usually it is used for detecting straight lines and curves. The purpose of the technique is to find imperfect instances of patterns within a certain class of shapes by a voting procedure. An improved Hough transform is proposed by using interval arithmetics in the accumulation phase of the algorithm. The discreteness of the quantization space is considered. The use of interval arithmetics showed to be simpler than other statistical proposals. It is presented a modified Hough transform for detecting function patterns implemented with interval arithmetics. This modified Hough transform was used to analyze the movement of the lung in MR temporal sequence of images. The results obtained with the interval arithmetics implementation were much better when compared with the conventional Hough transform implementation.