A cost optimization-based design of precast concrete floors using genetic algorithms

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

An investigation of pile diameter influence in the bearing capacity on Dynamic Load Test (DLT)

During the construction of five residential buildings in the city of Taubate, State of São Paulo, it was possible to carry out one comprehensive investigation of the behavior of precast concrete piles in clay shales. This paper describes the results of Dynamic Load Tests (DLT's) executed in three piles with different diameters and with the same embedded length. The tests were monitored using the PDA(R) (Pile Driving Analyzer) and the pile top displacement was measured by pencil and paper procedure. From the curves of RMX versus DMX resulted from CASE(R) method, CAPWAPC(R) analyses were made for signals where the maximum mobilized soil resistance was verified. The results were compared with the predicted bearing capacity using the semi-empirical method of Decourt & Quaresma (1978) and Decourt (1982) based on SPT values and the description of the soil profile. Some comments related to the values of quake and damping used for clay shales in the analyses are also presented.

Desafios e dificuldades do financiamento em saúde bucal: uma análise qualitativa

Os princípios de universalidade, integralidade e eqüidade do SUS só podem ser viabilizados com a construção de um modelo de financiamento flexível e transparente que permita o controle social e ofereça a agilidade no uso dos recursos. Este artigo analisa as dificuldades e desafios do financiamento da saúde bucal na ótica de gestores e técnicos da área. A coleta de dados ocorreu por meio de entrevistas, queforam gravadas e transcritas para análise qualitativa, preconizada por Bardin. As dificuldades relatadas pelos entrevistados foram expressas em frases como: Procuro cumprir a agenda, porém muita coisa não consegui devido à falta de recursos, não se sabe o quanto pode gastar, escassez de recursos para procedimentos de média e grande complexidades, falta de recurso para troca de equipamento e prioridade para compra de materiais. No que tange aos desafios foi relatada a necessidade de capacitação, formação e organização dos recursos humanos em saúde pública. Observa-se a dificuldade na realização completa do plano previsto de gestão, assim como a necessidade de compromisso por parte dos gestores em acompanhar as etapas de todo processo de repasse financeiro e aplicação do mesmo.

Mechanical behaviour of self-compacting concrete with hybrid fibre reinforcement

In this study, fibre-reinforced self-compacting concretes were developed for precast building components, incorporating either adherent metal fibres or polymeric synthetic slipping fibres or a combination of both. To achieve the warranted workability, compressive and splitting tensile strengths, compositions were determined by preliminary tests on self-compacting materials with various proportions of metal fibres. Bending tests in controlled deflection confirmed the positive contribution of fibres in the mechanical behaviour of self-compacting concrete. The comparison between vibrated and self-compacting concretes of similar mechanical characteristics indicated a possible better fibre-matrix bond in the case of self-compacting types. The results also showed that the properties of the hybrid fibre-reinforced self-compacting concrete could be inferred from the properties of the individual single-fibre reinforcements and their respective proportions through simple mix-rules.

Fadiga em dormentes de concreto reforçados com fibras de aço

A prestressed concrete monoblock railroad tie was designed to attend the characteristics of a Brazilian railroad track with 1,600 mm gauge and 320 kN axle load. Concrete ties specimens were manufactured without and with steel fibers in a volume fraction of 60 kg/m3 (0.76 % by volume), and three different initial prestress forces. Static and fatigue tests were carried out on the ties. Static tests showed that steel fibers increase the first crack and ultimate bending moments, increase significantly the slip force of the prestressing tendons, reduce crack width, add higher ductility to the ties and decrease the stress in the prestressing tendons. Under dynamic loading the steel fibers decreased the stress in the prestressing tendons by about 50%, which improved significantly the fatigue strength of the tie. A tie without fibers failed after only 150,000 cycles. However, a similar tie, with fibers, resisted 3,000,000 cycles without suffering fatigue failure.

Tele-education environment and didactic iconography in sexual transmitted diseases

The field of advertising has developed techniques of mass communication and rapid transmission of information. Among these techniques are slogans and iconographies. This work used such tools for educational purposes and was divided into three modules. Module 1 evaluated the use of simplified textual communication (slogans) about the subject Sexually Transmitted Diseases. It was applied to third-year medical students, which had not taken the course on this theme. To evaluate the impact of the textual communication form (slogans), long phrases were elaborated in scientific language containing 15 topics. From these long phrases, compact phrases were developed using techniques of the advertising area for elaboration of slogans. Three forms of didactic material about that theme were developed. The first form consisted of long phrases in descriptive topics, using scientific language. The second was constituted exclusively of compact phrases in the form of slogans, and the third was composed of the combination of the two previous forms. Then, 10 multiple-choice questions were elaborated and applied in two phases. In the first phase, application occurred immediately after the reading of didactic texts; in the second phase, it happened 60 days after the reading. For statistical analysis, Snedcor's F test was used for analysis of variance, at 5% significance level. There was an increase in memorization by students who read the material containing the association between long phrases and slogans, which indicates that the latter, when used as an auxiliary model of learning, can bring significant benefits for education. Module 2 consisted of analyzing the elaboration of educational videos produced in graphic computing (called iconographies) for development of dynamic communication means. The theme Hair Cycle was utilized. Viability of high quantities of information in few minutes of animation could be demonstrated together with the advantage of presenting the process in a dynamic form without wasting scientific details. Module 3 presented the inclusion of slogans in educational videos produced in graphic computing about the Hair Cycle, showing a new tool for rapid and efficient transference of data. Slogans and iconographies, when utilized in educational material, can bring significant benefits for the student's learning.

Dicionário onomasiológico de expressões cromáticas da fauna e flora:

Pós-graduação em Estudos Linguísticos - IBILCE

A haplologia na variedade paulista

Pós-graduação em Estudos Linguísticos - IBILCE

Uma leitura da produção de significados matemáticos e não-matemáticos para dimensão

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Comportamento estrutural de lajes pré-moldadas treliçadas com adição de resíduos de borracha de pneu

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise numérica de lajes treliçadas pré-moldadas com adição de resíduo de borracha

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aproveitamento de resíduos de concreto na confecção de peças para pavimento intertravado de concreto

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Ponte mista de madeira-concreto em vigas treliçadas de madeira

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo de lajes com adição de resíduo de pneu

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da influência da adição de borracha vulcanizada em concreto à temperatura ambiente e elevada temperatura

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)