Racionalidade e controle nos processos sociais notas para um plano de trabalho

O autor expõe etapas que julga necessárias para o exame de modernas teorias a respeito das transformações econômicas, sociais e culturais da história brasileira. Por outro lado, esse movimento visaria investigar os fundamentos epistemológicos de tais explicações do Brasil. O texto corresponde, insiste-se, a um plano de trabalho.

O uso da estatística de qui-quadrado no controle de processos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Uma arquitetura multiagente para sistemas de supervisão e controle de processos

Pós-graduação em Ciência da Computação - IBILCE

Gráficos de X com esquemas especiais de amostragem para o controle de médias que oscilam ou para o controle de processos que geram observações autocorrelacionadas

Pós-graduação em Engenharia Mecânica - FEG

Bioengenharia no controle de processos erosivos de áreas de hidrelétricas – o caso da PCH Costa Rica (MS)

The crescent increasing demand of the electric power in Brazil has stimulated the implantation of Small Central Hydroelectric Power (SCHP) in several regions of the country. However, the silting up of the reservoirs is one of the main problems faced by hydroelectric power plants and SCHP. In this context, this research aimed evaluate the phenomenology and propose the enforcement of appropriate bioengineering techniques to control the intense erosive process of the hydrographical basin of the “Alto Rio Sucuriú,” that cause silting up of the reservoirs of the SCHP Costa Rica, located in the municipal district of Costa Rica (MS). In order to identify the phenomenology of the main falling in of this basin, a diagnosis of the conditions of the physical environment of the region (climate, geology, pedology, hydrology, and use of the ground) was realized. A surveying was also realized to specify the geometric feature of the falling in using the Total Station of the Ruide brand, series RTS 860R and the geodetic GPS of the Ashtech brand and the data obtained was used on the preparation of the Digital Elevation Model (DEM) of the falling in. Based on this diagnosis an official register of the falling in was done with identification of the different types of present erosion. Due to the advanced erosive stage of the falling in researched, the use of bioengineering techniques could be the best solution considering that the traditional engineering techniques make use of heavy material like concrete, iron and large machines that besides causing higher impact to the natural and esthetic aspects of the environment also require a higher investment of capital. This research establish a great cooperation to the knowledge of the erosive process and of the rehabilitation of the degraded areas with application of bioengineering techniques not only hydrographical basin of “Alto Rio Sucuriú” but also to other basins that show similar situation

Análise de sistemas de máquinas térmicas em plantas de processos químicos

Pressure drop and energy efficiency of compressors in chemical plants are the focus of this study. Its objective is an analysis of possible sources of energy loss through the study of pressure loss in pipes, calculation of thermodynamic efficiency of the compressors. Important issues are raised for this analysis such as the types of compressors, the operating range of each compressor, compression types, as well as a study of accessories such as filters and valves. After studying these issues was carried out calculations of pressure drop step-bystep and with a software WIPCD. Followed by the calculation of efficiency of compressors and monthly energy cost of each compressor in operation. Finally, the study shows some suggestions for immediate improvements, changes and suggestions for possible future purchases of compressors

Gráficos de controle X para processos robustos

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Implementação de duas arquiteturas microcontroladas tolerantes a falhas para controle da temperatura

Pós-graduação em Física - IGCE

Sistema de supervisão e controle de irrigação utilizando técnicas de inteligência artificial

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

Redes neurais aplicadas em processos de usinagem da madeira

Pós-graduação em Engenharia Mecânica - FEG

Desenvolvimento de um sensor virtual para processos não-lineares e variantes no tempo, com aplicação em planta de neutralização de PH

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo para a implementação de um sistema de desbaste de cobre para manufatura de placas de circuito impresso

This paper presents a study on the development of a manufacturing system of printed circuit boards through copper milling. An advantage of this system is the replacement of chemical processes by physical process presenting a sustainable solution. The paper uses programs that will generate G-code needed to establish the coordinates where the milling forms the tracks. After obtaining the code, it will be transformed into steps that will be sent through the serial port to the microcontroller and the serial communication control will be in software. After obtaining information the microcontroller will execute the movement of the stepper motors through their drivers, H-bridge, the microcontroller also drives the spindle motor responsible for rotating the grinding tool, using a driver with a optocoupler and TRIAC

Gerenciamento de inventário por meio de ferramentas de controle da produção em empresas de higiene pessoal, perfumaria e cosméticos

This action-research work presents tools which are related to production monitoring: Follow-up of Products Release from Quality Department and Follow-up of Production Volumes. Both tools allows controlling release delays of finished goods based on the quality specifications, and the accurate analysis of production volumes variations compared to pre-established plans. They have direct impact into enterprises inventory levels that are part of Toiletries, Perfumery and Cosmetics market segment. By applying these tools, it´s possible to identify opportunities for process optimization that brings benefits for the final customer. The results seen by the tools application are presented by the analysis of delayed stock for release quantities evolution and testimonies from professionals of Supply Chain

Estudo de caso de controle estatístico de processo: levantamento da variação de espessura de tábuas de pinus

This graduate work approaches the study of Statistical Process Control - SPC, in a stage production of an industrial frame, aiming to use the tool of statistical process control (SPC) to assess the process capability. Where the process needs improvement as well not meet the specifications. Assessing the needs that the company needs to improve quality management, and the difficulties they present during the implementation of the CEP. The present study is to use the method of case study. The results are presented through study, and checking the capacity and stability of the process using control charts XbarraR. The process demonstrated the need for improvements in process and quality management. At the end of the work are presented suggestions for improving the quality system of the company

Arquitetura de um sistema multiagente autônomo para supervisão e controle

This paper presents a multi-agent architecture that was designed to develop processes supervision and control systems, with the main objective to automate tasks that are repetitive and stressful, and error prone when performed by humans. A set of agents were identified, based on the study of a number of applications found in the literature, that use the approach of multi-agent systems for data integration and process monitoring to faults detection and diagnosis, these agents are used as basis of the proposed multi-agent architecture. A prototype system for the analysis of abnormalities during oil wells drilling was developed.