252 resultados para Metodos formais


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This study characterizes the city of Cristais Paulista (SP) the occurrence of lithologies formal and allostratigraphic units (new sedimentary deposits) and soil, through mapping, determining the material properties in laboratory and field, based on the data it is proposed evolutionary pattern for the residual material weathered and transported (allostratigraphic units), with the integration of the all data was generated as a final product Zoning Geoenvironmental in the study area is an important tool for urban planning area.

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This work aims to examine, the behavior of a combustion chamber in pilot scale, coupled to a regenerative burner. The objective is to obtain a computational domain capable of supporting a simulation of conventional combustion and flameless combustion regimes. The objective is to obtain independence of mesh, analysis of the velocity fields of the fluid within the chamber, temperature and concentration profiles of the species emitted during the combustion process

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One of the reasons that influences the efficience of a port terminal that is especialized in movement of containers is in the process of their loading and unloading. The fundamental idea is to determine a plan, to each port in order to decrease the number of total movement of loading and unloading that are necessary during the ship route to every port so that they save time and consequently reduce costs. The goal of this research was to present improvement in the program, written in language C, used to solve to problem of loading and unloading of ships, a NP-complete problem, through the meta-heuristics Simulated Annealing. With the improvement made, an average of 50% reduction of necessary time was gotten to solve the problem in 45 analised instances and in a specific group of these instances the average reduction reached 77 and in 10 instances there was even an improvement in the solution

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Due to the growing practice of recreational activities among enterprises, it became evident an increase in the possibilities of interdisciplinary action of Physical Education teachers as well as in the areas alike. However, just a few academic papers try to understand the relation involving recreational activities in the context of business companies, what motivated the attention of this study, which aims to investigate whether the games played in business trainings may somehow contribute for a better comprehension and development of actions between employees and employers and also, to analyze the acceptability of this resource in lectures or formal events, which are usual in trainings. This study – which has a qualitative approach – was developed and based on the union of both bibliographic and exploratory researches. Data were collected through a questionnaire with open and direct questions that was applied to an intentional sample of twenty-five employees from a company in the countryside of São Paulo. Those data were analyzed in a descriptive way, through Thematic Content Analysis Technique and they showed that the relationship among employees has improved, whereas the relationship between employers and employees hasn’t improved that much and that the training which was given with dynamics and recreational strategies had a very positive result, because the goals were reached and the acceptability of this kind of training was unanimous among all the participants, It is extremely important that recreational activities can be developed in business trainings because with them, it is possible to reach more successfully their goals and the acceptability by the participants.

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A great competition between companies happens nowadays, due to, among other factors, the globalized economic system, the growing consumer demand and the technological advances. This fact implies the need for fast and efficient tools in decision making. A validated simulation model is able to perform this task. Thus, it was parameterized a simulation model of a fuel distribution terminal. It is a complex system because of its great variability. The model´s data input were collected, however the model was not statistically validated, in other word, does not adequately represent the real system. A search was made for the possible causes of this fact: dividing the compartments of tanker trucks, data collection may have been insufficient, inefficient model for unloading of biofuels

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In our experiments, we studied the classical dynamic of a particle in vertical motion subject to a constant gravitational field and the partial shock with an elastic wall with oscillatory motion located below the particle. The motion of the particle was confined to the vertical direction by a glass guide tube, which was initially evacuated, allowing viscous drag forces to be disregarded. The time between impacts, as well as the time between the reference phase of the movement of the base and the moment of impact and the period of oscillation of the base will be acquired by a hardware and software to obtain the phases space to be compared later with the description of the system through mapping discrete variables via the 'particle velocity immediately after shock 'and' phase of the movement of the base at the instant of shock 'obtained by computer simulation. This requires developing an electronic analog system followed by Digital implemented in reconfigurable logic, more specifically a sequential machine able to discriminate the impact with the metal base from the impacts of the glass guide tube, based on the frequency spectrum of the response of the microphone to these different impacts

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This work presents a study of the absorption refrigeration system and the modeling and evaluation of two cycles using the binary solutions water-lithium bromide and ammonia-water for an equipment to be used in small size plants like residences. The study and evaluation aims the complete understanding of all parts of the system and the influence of each one of them as well as the spread of the knowledge to raise the use of this type of equipment in all sizes in order to decrease the energetic consumption of plants of all scales and making viable the alternative sources. The study is done in each element of the cycle separately and in some auxiliary equipments required in the operation such as the main power source, the solar collector. The software used for modeling, with emphasis on thermal part, was the EES (Engineering Equation Solver), that permitted the thermal balance calculus and acquisition of the used fluids properties. The results obtained for the equipment shows the system is more complex than the widely used in business, however, it can be viable and represents an alternative to increase the energetic efficiency

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In uncertainly economic scenarios, an economic feasibility analysis must be done to accept a project based on investment criteria, such as NPV and IRR, mainly because the shareholders tend to invest their budget in a project if it has a great chance to return their investments. The studied company outsources all of its foundry services, what makes it very dependent of its suppliers, because the products have a lower quality level, long delivery periods and high prices. Therefore, this work will analyze the project of building an iron-casting foundry to decrease the dependence of its suppliers. In order to develop this research, all needed data related to the construction of the foundry and sales were collected to create deterministic and probabilistic (Monte Carlo Simulation) cash flows using MsExcel® and Oracle's Crystal Ball® software. As a result, the project was found to be risky by the NPV and IRR in the case of this new production line supplying only the internal needs. However, when the company offers its services to the foundry market, the project turns to be feasible

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In the current decade, inter modal transport is widely discussed. In Brazil road transport is used in excess whereas there could be more focus and investment towards water transport. Water transport presents many benefits like being low cost and low maintenance. Sea and river ports today aren't capable of supporting Brazil's transport needs. Therefore, with this obstacle, this paper consists of an attempt of modeling and simulation of the process of unloading grain cargo from trucks, through simulation with ProModel software, to verify the necessity of installing more tumblers at the cargo unloading station in Porto Murtinho, MS

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Today statistics are one of the most important bases of the engineer formation. Statistics are used indirectly every day for engineers in a large panel of sectors like construction, mechanical engineering, biological engineering, electrical engineering, computer science etc. The main goal of this report is to compare different ways the engineers of tomorrow are formed in order to show which engineering is the best practice. The comparison will be done on different universities in France, Brazil and the US on Mechanical, Civil, Electrical and Production branches. We will compare the amount of courses required, the degree of knowledge needed and the mains subjects

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Le présent travail intitulé « Réflexions sur l’enseignement de la langue portugaise aux étrangers et sur l’enseignement de la langue portugaise aux natifs », a eu pour objectif d’enquêter sur les consensus et les désacords dans l’enseignement de la langue portugaise aux differents interlocuteurs. Des lectures préalables sur des textes de difusion scientifique qui ont pour but de divulguer des expériences sur l’enseignement du portugais aux étangers ont révélé l’importance atribuée à la connaisance de la culture quand il s’agit d’enseigner une langue donnée à de tels interlocuteurs. La connaissance de la culture est très importante dans ce cas de figure car il s’agit d’une conception plus ample : celle de l’interculturalisme. C’est pourquoi, nous faisons des lectures préalables dont la méthodologie proposée pour l’enseignement de la langue portugaise aux étrangers s’organise d’une telle façon que l’interlocuteur se trouve immergé dans la culture locale. Néanmoins, quand il s’agit de réfléchir à l’enseignement de la langue portugaise dédié aux natifs et basé sur les propositions curriculaires de la langue portugaise au collège et au lycée, datés de 1993 e 1998, qui constituent des textes de vulgarisation scientifique, on peut constater la préoccupation à réfléchir sur les conceptions de langage, langue, discours, texte et grammaire, des connaissances considérées comme importantes à la proposition de methodologies de l’enseignement de la langue portugaise dans le contexte très formel de l’enseignement scolaire. Le principal objectif de ce travail a consisté à analyser l’importance de la culture dans l’enseignement de la langue portugaise aux étrangers et natifs, le rapport entre culture, language, langue, discours, texte et grammaire dans l’enseignement du portugais aux étrangers et du portugais aux natifs, ainsi qu’à identifier le poids ...

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Este trabajo tiene como objetivo principal oferecer una herramienta alternativa para la resolución de placas finas, presentes en edifícios, relacionadas con los métodos de cálculo adquiridos durante la universidad, calculo a través de tablas con pocas condiciones de controno. El método utilizado es el Método de los elementos de contorno que discretiza la placa en partes finitas, aproximando los resultados obtenidos a valores reales. En este trabajo se ha utilizado el programa de ordenador Placas2.for (TAGUTI,Y. 2010) basado en el Método de los elementos de contorno para la resolución de las placas finas con varias condiciones de contorno geométricas y de cargas

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Control charts are very important tools in statistical quality control of industrial processes and its use started last century. Since its development, the charts have always been attributed to independent processes, i.e. without any correlation between samples. But nowadays, with the high level of automation in the industrial environment, it is noticeable the autocorrelation factor between samples. The main Xcharts used in monitoring quality characteristics represented by continuous variables are the mean (X ), amplitude (R) and variance (S²). Therefore, this work aims to analyze the performance of X and R charts and in of X and S² charts with different sample sizes (4 and 5) for monitoring autocorrelated processes. Through computer simulations using the Fortran software and the use of mathematical expressions was possible to obtain data and performance analysis of the detection power charts for independent observations and for autocorrelated observations according to the model AR (1). The results show that the effect of autocorrelation reduces the ability of monitoring the control charts and that, the greater this effect, the slower the chart becomes in misfits signaling

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Cucumber (Cucumis sativus L.) is a plant of the Cucurbitaceae family of great commercial importance and their culture is widespread throughout the country. The production of vegetables, high-quality care begins with training ranging from seedlings and shading techniques have an important role in creating environments more conducive to the production of seedlings and many researchers and producers of seedlings have opted for the use of color shading screens, making this way, the wavelength and the amount of incident energy are changed in favor of the plants. Work will be performed at the Department of Forest Sciences, Faculty of Agricultural Sciences, Universidade Estadual Paulista (UNESP), Botucatu campus. The statistical design will be in three blocks, each containing 100 plots of each treatment (seedlings covered with blue screen, red and black). Evaluations of dry mass and height will be made at 7, 14, 21 and 28 days after emergence, and 5 will be selected seedlings of each treatment. At 14 and 28 DAE was measured, and SPAD chlorophyll content at 30 DAE, was evaluated by measuring gas exchange in the second pair of leaves, fully expanded for each plant, which was put in a chamber controlled with infrared gas analyzer (IRGA LI 6400, Licor) to perform measurements of photosynthesis. Treatment with black shading showed statistically better results for total dry matter, plant height, SPAD chlorophyll content and net assimilation of CO2, showing a better quality seedlings and its use is recommended in the cultivation of cucumber Taiko