814 resultados para Benchmark


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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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We have developed an algorithm using a Design of Experiments technique for reduction of search-space in global optimization problems. Our approach is called Domain Optimization Algorithm. This approach can efficiently eliminate search-space regions with low probability of containing a global optimum. The Domain Optimization Algorithm approach is based on eliminating non-promising search-space regions, which are identifyed using simple models (linear) fitted to the data. Then, we run a global optimization algorithm starting its population inside the promising region. The proposed approach with this heuristic criterion of population initialization has shown relevant results for tests using hard benchmark functions.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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This paper presents a new methodology to analyze aeroelastic stability in a continuous range of flight envelope with varying parameter of velocity and altitude. The focus of the paper is to demonstrate that linear matrix inequalities can be used to evaluate the aeroelastic stability in a region of flight envelope instead of a single point, like classical methods. The proposed methodology can also be used to study if a system remains stable during an arbitrary motion from one point to another in the flight envelope, i.e., when the problem becomes time-variant. The main idea is to represent the system as a polytopic differential inclusion system using rational function approximation to write the model in time domain. The theory is outlined and simulations are carried out on the benchmark AGARD 445.6 wing to demonstrate the method. The classical pk-method is used for comparing results and validating the approach. It is shown that this method is efficient to identify stability regions in the flight envelope. (C) 2014 Elsevier Ltd. All rights reserved.

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Classical procedures for model updating in non-linear mechanical systems based on vibration data can fail because the common linear metrics are not sensitive for non-linear behavior caused by gaps, backlash, bolts, joints, materials, etc. Several strategies were proposed in the literature in order to allow a correct representative model of non-linear structures. The present paper evaluates the performance of two approaches based on different objective functions. The first one is a time domain methodology based on the proper orthogonal decomposition constructed from the output time histories. The second approach uses objective functions with multiples convolutions described by the first and second order discrete-time Volterra kernels. In order to discuss the results, a benchmark of a clamped-clamped beam with an pre-applied static load is simulated and updated using proper orthogonal decomposition and Volterra Series. The comparisons and discussions of the results show the practical applicability and drawbacks of both approaches.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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The life and work of Tatiana Belinky are steeped in fantasy, his works speak of magic and charm of the stories. This research aimed to investigate the knowledge that teachers in the early years of Primary Education (Early Childhood and 1st year of elemen tary school education) have on the work of Tatiana Belinky. Therefore, a survey research theoretical framework in printed documents and digital media (websites and platforms indexed) was performed in order that he might collect data about the life and work of this writer. Concomitantly, the benchmark survey, a field study with teachers from preschool (4) 1st year of elementary school (2), a public school in the town of Jaú, in which a questionnaire semi - structured questions was used was performed . The survey and qualitative study, a case study allowed the lifting of the life and work of the author, approximately 104 considered early childhood education. As to knowledge of teachers studied in the research almost all said they knew the author, however there were few works cited by them

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This paper analyzes the dance, considered the oldest of the Arts, inserted in Art and Education. When you talk about dance as art, sought to articulate dance, body movement and music, because all these aspects are crucial when it comes to education in dance. Thus, this paper, by analyzing the meaning of dance over time, also made a parallel with the evolution of the concept of body that, throughout history, became the focus of sin, to currently be seen in optical freedom and autonomy, looking up from childhood, the formation of body awareness and embodiment, as a basis for identity and the formation of a positive self-image. In describing the evolution of dance, between different societies, it was shown that the tool is the dancer's own body and that for its use, it is necessary to look at its interior, human vitality, musicality and sensitivity. Proved that dance since the beginning, has been seen as a medium body, as well as desires and deepest sorrows of humanity, linked to religion, ritual or ceremonial, reaching today the freest expression of body, in modern dance. Given these considerations, based on theoretical frameworks, emphasized the importance of dance in middle school, focusing on their educational role and liberating, showing that it must be used as a tool for teaching and learning, and the development of children , given its interdisciplinary character, this Crosscutting Themes in elementary school and early childhood education curriculum benchmark. The paper concludes that, despite legislation and official documents require training for dance in the school curriculum, very little is done in this direction, which shows that there is still a choice of schools, the immobility of the pupils

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Through observation of production process of a Vale do Paraiba’s automobile industry, one can encounter in need of improvement related to large uncertainties and variations in the production environment, a fact that inspired the search for solutions that can respond quickly to these changes. This way, the paper describes the development of a flexible manufacturing model, which aims to optimize the process in an automotive sub-assembly industry of the Paraíba Valley. The main objective is to propose a method to promote viable alternatives to easing the assembly of parallel sub performed the assembly of cars. For the construction of the model was necessary to explore concepts of flexible manufacturing and making the data presented in literature, which were vital to ensure the development of the method. The concepts discussed are usually presented at an undergraduate degree in Engineering. Data compiled by the model are able to serve as a strategic benchmark for decision making by managers. Featuring alternative response variables and uncertainties of the organizational environment, a fact that facilitates the management of human resources and productive

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The goal of this research is to identify and describe the recreational objects, or toys, children’s play and games offered by teachers from a public municipal school of early childhood education in Pederneiras, a city located inland São Paulo State. The research has started with a retrospective look of the childhood concept and of the recreational objects with in the classical era till the modernity, what has allowed to identify how to play was in history and what is its relation with education. In order to understand how the recreational objects have been seen at school we have made a survey of the oficial Brazilian documents related to the childhood education. The benchmark survey has allowed the organization of a half structured questionnaire and the Kobayashi studies (2009, 2011), was the mean used to identify and classify the recreational objects found at school. The data collected in the benchmark survey in the field remark and by the questionnaire have permitted to identify here recreational objects available by teachers in early childhood education of 3 to 5 years old children at the school mentioned and what they think about the theme, on the other hand the studies performed have allowed us to analyse the adaptation and validity of the recreational objects already found

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This magazine aims to be an environment for discussion and information about performance art in Brazil and abroad, taking advantage of the momentum of this art form today. The magazine apart will be the first Brazilian publication to focus on performance art out of academic environments. The collaboration of professionals and scholars lends credibility to the product becoming a benchmark in the study of contemporary art. Besides being an enhancer and exhibitor of artists and works, this magazine also wants to be a work of art itself