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    ABSTRACT: The projects with embedded systems are used for many different purposes, being a major challenge for the community of developers of such systems. As we benefit from technological advances the complexity of designing an embedded system increases significantly. This paper presents GERSE, a guideline to requirements elicitation of embedded systems. Despite of advances in the area of embedded systems, there is a shortage of requirements elicitation techniques that meet the particularities of this area. The contribution of GERSE is to improve the capture process and organization of the requirements of embedded systems projects. Resumo. Os projetos de sistemas embarcados são desenvolvidos para as mais diversas finalidades, apresentando-se como um grande desafio para a comunidade de desenvolvedores de software. Na medida em que nos beneficiamos dos avanços tecnológicos, a complexidade dos sistemas embarcados tem aumentado de forma significativa. Neste artigo apresentamos o GERSE, um guia para elicitação de requisitos de sistemas embarcados. Apesar dos avanços na área de sistemas embarcados, nota-se uma escassez de técnicas de elicitação de requisitos que atendam às particularidades desta área. A contribuição do GERSE vem no sentido de melhorar o processo de captura e organização dos requisitos em projetos de sistemas embarcados.
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    ABSTRACT: The production sector of molds and dies is under a continuous pressure for process optimization due the high lead time required for the production of complex tools. In recent years, to improve this sector, numerous studies have been aimed at optimization of the CAD/CAM/CNC chain. However, despite recent technological innovations such as development of cutting tools, machine tools, and process simulation systems, the machining step still represents a major bottleneck in this process. The current generation of Numerical Control (NC) programs that represents the tool path do not consider the dynamic characteristics of the machine tool in the decision-making process to choose the most appropriate cutting strategies, resulting in NC programs that do not reach levels of excellence. The main objective of this paper is to present the development of a reference index based on the dynamic characteristics of the Machine Tool to support the NC programming with a commercial CAM system. This index considers the Machine Response Time (MRT) of NC controller, the acceleration and deceleration on the axes of the machine tool and the tool path segment (size and inclination). The index makes possible an experimental evaluation of relationships between the programmed feed rate for the tool path and dynamic performance due to movements of the machine axes, thus becoming an important decision-making factor in choosing the best machining strategy and consequently a better plan of the production process in die and mold industries.
    12/2013; 7:317–322. DOI:10.1016/j.procir.2013.05.054
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    ABSTRACT: Socioeconomic status (SES) and stimulation provided in the home environment are influential factors in aspects of child well-being including motor development. Little is known regarding the influence of SES on specific aspects of the home environment. To evaluate the availability of affordances in the home to promote infant motor development and family SES. The sample consisted of 300 families with infants aged 3 to 18 months. SES was assessed according to family socioeconomic class, income and parental level of education. To evaluate motor affordances found at home, the Affordances in the Home Environment for Motor Development-Infant Scale (AHEMD-IS) was used. The AHEMD-IS was designed to assess dimensions of the home environment including Physical Space (outside and inside space), Daily Activities and Play Materials (fine-motor and gross-motor toys). SES indicators significantly influenced the availability of Physical Space and Play Materials. The Physical Space dimension was influenced by family economic class and income. The Play Materials dimension was influenced by all SES indicators. Daily Activities were not influenced by any of the SES indicators. Daily activities and play material were influenced by the infant's age. This study suggests that SES indicators are influential with regard to the provision of motor affordances in the home environment for infants. However, daily activities, which represent an aspect of the environment that is highly dependent on parental generation of situations that are conducive to motor skill development, are independent of family SES.
    Revista Brasileira de Fisioterapia 08/2013; 17(4):319-27. DOI:10.1590/S1413-35552013005000096


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    Piracicaba, Brazil
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