Submitted by Lara Oliveira (lara@ufersa.edu.br) on 2017-06-29T16:57:37Z No. of bitstreams: 1 FranciscoMC_DISSERT.pdf: 3890460 bytes, checksum: d32d157669d00a07d57f91a8d177dec3 (MD5) / Rejected by Vanessa Christiane (referencia@ufersa.edu.br), reason: Corrigir referência. on 2017-07-03T12:21:11Z (GMT) / Submitted by Lara Oliveira (lara@ufersa.edu.br) on 2017-07-04T15:07:33Z No. of bitstreams: 1 FranciscoMC_DISSERT.pdf: 3890460 bytes, checksum: d32d157669d00a07d57f91a8d177dec3 (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-07-04T16:56:15Z (GMT) No. of bitstreams: 1 FranciscoMC_DISSERT.pdf: 3890460 bytes, checksum: d32d157669d00a07d57f91a8d177dec3 (MD5) / Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-07-04T16:58:56Z (GMT) No. of bitstreams: 1 FranciscoMC_DISSERT.pdf: 3890460 bytes, checksum: d32d157669d00a07d57f91a8d177dec3 (MD5) / Made available in DSpace on 2017-07-04T16:59:07Z (GMT). No. of bitstreams: 1 FranciscoMC_DISSERT.pdf: 3890460 bytes, checksum: d32d157669d00a07d57f91a8d177dec3 (MD5) Previous issue date: 2017-03-10 / The model of education in the last decades has undergone considerable changes from a didactic point of view. With the advancement of technology, the speed of obtaining information increases and the use of tools that allow the dynamic visualization of content becomes a strong ally to the teaching-learning process. This work deals with the creation of an interactive tool to visualize the propagation of traveling waves in an electric power system, with the possibility of insertion of data by the user, in order to facilitate the consolidation of knowledge. The model was created from the GUIDE of Matlab R, which has a graphical interface with the possibility of inserting data into a single screen with action buttons, which when clicked performs actions like calculate and display the animated graphic. It is important to highlight that the creation of the program, besides facilitating the student's understanding, due to the animation, also allow a better familiarization with computer simulation software, and with the parameters used in the transient analysis in transmission lines / O modelo de educação nas últimas décadas vem sofrendo alterações consideráveis do ponto de vista didático. Com o avanço da tecnologia, a velocidade da obtenção de informações aumenta e a utilização de ferramentas que possibilitem a visualização dinâmica do conteúdo se faz um forte aliado ao processo ensino-aprendizado. Esse trabalho aborda a criação de uma ferramenta interativa para a visualização da propagação de ondas viajantes em um sistema elétrico de potência, com a possibilidade de inserção de dados por parte do usuário, afi m de facilitar a consolidação do conhecimento. O modelo foi criado a partir do GUIDE do Matlab R, que possui uma interface gráfica com a possibilidade de inserção de dados em uma única tela com botões de ação, que ao serem clicados realizam ações como calcular e mostrar o gráfi co animado. É importante destacar que a criação do programa além de facilitar a compreensão por parte do aluno, devido à animação, também possibilita uma maior familiarização com softwares de simulação computacional, e com os parâmetros utilizados na análise do transitório em linhas de transmissão / 2017-06-28

abstract: Research was conducted to observe the effect of Number of Transparent Covers and Refractive Index on performance of a domestic Solar Water heating system. The enhancement of efficiency for solar thermal system is an emerging challenge. The knowledge gained from this research will enable to optimize the number of transparent covers and refractive index prior to develop a solar water heater with improved optical efficiency and thermal efficiency for the collector. Numerical simulation is conducted on the performance of the liquid flat plate collector for July 21st and October 21st from 8 am to 4 pm with different refractive index values 1.1, 1.4, 1.7 and different numbers of transparent covers (0-3). In order to accomplish the proposed method the formulation and solutions are executed using simple software MATLAB. The result demonstrates efficiency of flat plate collector increases with the increase of number of covers. The performance of collector decreases when refractive index is higher. The improved useful heat gain is obtained when number of cover used is 3 and refractive index is 1.1. / Dissertation/Thesis / Masters Thesis Mechanical Engineering 2015

Dissertação (mestrado)—Universidade de Brasília, Programa de Pós-Graduação em Ciências Mecânicas, 2012. / Submitted by Jaqueline Ferreira de Souza (jaquefs.braz@gmail.com) on 2012-06-27T11:55:18Z No. of bitstreams: 1 2012_FredericoArantesdePaula.pdf: 4114657 bytes, checksum: 5c95635ec96e2064d85f1851386d8cda (MD5) / Approved for entry into archive by Jaqueline Ferreira de Souza(jaquefs.braz@gmail.com) on 2012-06-27T11:55:34Z (GMT) No. of bitstreams: 1 2012_FredericoArantesdePaula.pdf: 4114657 bytes, checksum: 5c95635ec96e2064d85f1851386d8cda (MD5) / Made available in DSpace on 2012-06-27T11:55:34Z (GMT). No. of bitstreams: 1 2012_FredericoArantesdePaula.pdf: 4114657 bytes, checksum: 5c95635ec96e2064d85f1851386d8cda (MD5) / O modelo proposto por Mamiya, Araújo e Castro para estimativa de vida á fadiga sob carregamentos multiaxiais apresenta resultados adequados para situações com amplitude de carga constante. Entretanto, a aplicação deste modelo para a previsão de vida sob condições de carregamento com amplitude variável necessita de um método de contagem de ciclos. O objetivo deste trabalho foi realizar um estudo crítico da utilização do método proposto por Wang & Brown para identificação e contagem de ciclos no contexto da fadiga multiaxial. O trabalho compreendeu (i) a implementação computacional do método em linguagem Matlab, (ii) a implementação computacional, também em linguagem Matlab, de um algoritmo de simulação do comportamento elastoplástico para condições de carregamento multiaxial não proporcional do tipo tração-cisalhamento, (iii) a simulação numérica do comportamento elastoplástico correspondente e (iv) a verificação da possibilidade de associação de pares de semiciclos para a formação de ciclos relacionados aos caminhos de histerese elastoplásticos, da mesma forma que a observada no caso do método rainflow no contexto unidimensional. O estudo confirmou que o método de Wang & Brown é consistente com o método rainflow nas situações de histórias uniaxiais de carga, mostrou que o conjunto de semiciclos pode variar sob efeito de pequenas perturbações na história de carregamento e, finalmente, concluiu que nem sempre este método é capaz de definir os ciclos necessários ao cálculo das amplitudes de tensão cisalhante demandadas pelo modelo. _____________________________________________________________________________ ABSTRACT / The multiaxial model for fatigue life estimation proposed by Mamiya, Araújo and Castro shows suitable results for constant amplitude loading situations. However, the model’s application to fatigue life prediction under variable amplitude loading requires a cycle counting method. The aim of this work is to analyze the capability of the method proposed by Wang & Brown for cycle identification and counting in the setting of multiaxial fatigue. The work includes (i) the computational implementation of the method in Matlab, (ii) the computational implementation of the algorithm in Matlab to simulate the elastoplastic behavior for multiaxial non-proportional tensileshear loading conditions, (iii) the numerical simulation of the elastoplastic behavior and (iv) the assessment of whether each pair of semicycles (obtained by Wang & Brown method) can be related to an elastoplastic hysteresis path, as observed in the case of the rainflow method under one-dimensional loading. The study confirmed that theWang & Brown’s method is consistent with the rainflow method in uniaxial loading situations, showed that a set of semicycles can vary under the small perturbations’ effect in the loading history and finally concluded that this method is not always capable to define the needed cycles for computing the shear stress amplitude demanded by the model.

This thesis mainly focuses on the research of gesture extraction and finger segmentation in the gesture recognition. In this paper, we used image analysis technologies to create an application by encoding in Matlab program. We used this application to segment and extract the finger from one specific gesture (the gesture "one") and ran successfully. We explored the success rate of extracting the characteristic of the specific gesture "one" in different natural environments. We divided the natural environment into three different conditions which are glare and dark condition, similar object condition and different distances condition, then collected the results to calculate the successful extraction rate. We also evaluated and analyzed the inadequacies and future works of this application. / Technology

La Escuela de Ingeniería Electrónica de UPC enfrenta la limitada disponibilidad de equipos de robótica, con los cuales los estudiantes puedan desarrollar experiencias en clases y laboratorios para afianzar sus conocimientos con valiosas experiencias prácticas. Ante esta situación, se propone desarrollar una plataforma virtual de simulación y control de robots, la cual mejorará la calidad de enseñanza de los estudiantes brindándoles una mejor comprensión de los temas tratados en el curso de Robótica e Inteligencia Artificial, mediante experiencias prácticas con un robot programable de cinco grados de libertad. El presente trabajo reporta el desarrollo de un software visual, en el cual se ha tomado como caso de estudio un robot manipulador AL5D de Lynxmotion. Se adopta la metodología de diseño de plataformas de realidad virtual, utilizando Matlab como entorno de desarrollo para simular y ejecutar secuencias de movimientos en el robot. Los modelos matemáticos resueltos del manipulador son implementados y probados, a fin de analizar y mejorar los algoritmos de Cinemática Directa, Cinemática Inversa y Control Cinemático, que serán enviados al robot para su posterior puesta en marcha. La plataforma de simulación y control desarrollada se utiliza como una herramienta educativa para mejorar las oportunidades de investigación aplicada y experimental. De esta forma, lograr enriquecer la currícula del curso de Robótica e Inteligencia Artificial en UPC. / UPC’s Electronic Engineering School faces limited availability of expensive robotics equipments, with which students can experiment in laboratories to improve their knowledge with valuable practical experiences. For this reason, a virtual simulation and control platform is developed. This platform will improve the quality of teaching provided to students giving them a better undestanding of the Robotics and Artificial Intelligence course, through practical experiences with a programmable five degrees of freedom robotic arm.

Occasionally, a part of the budget of a city, company or other entity has to be allocated among its parts in the form of subsidies or other contributions. The main objective of such an entity is to find such a set of criteria and such a set of their relative weights that estimate the expected cost best. The objective of a sub-entity is subsidy maximization by influencing the criteria and their weights. From this reason, the best budget splitting is a relative term. From the mathematical point of view, such a problem belongs to mathematical optimization or mathematical programming. In this thesis, five quantitative methods are presented. Two of them set the weights without the participation of decision makers. The first allocation method is based on multiple-criteria decision-making and the second one on data envelopment analysis. Together with them, a different mathematical model with maximum and minimum weights for the set of criteria is presented. Two its modifications are discussed too. As the only one presented multi-criteria mathematical model is based on maximization of the relative and absolute profit simultaneously. The aim of this work is to study the known mathematical models for subsidy allocation problem, to invent new ones, to choose suitable ones and subsequently to implement the suitable ones into a standalone GUI application created in the Matlab environment. The presented application proposes several allocation possibilities according to different selected models using mathematical functions taken from Matlab. This user-friendly application is executable on common computers and can be used at the Magistrate of the City of Prague as a support tool in voting decision. Moreover, this application can be extended to new methods or program functions. The selected quantitative methods are used for the budget allocation problem among the city districts for real data of the City of Prague. Experimental results are discussed.

No description available.

The thesis focuses on risk assessment of selection of chosen company suppliers. It evaluates the quality of suppliers using principles of fuzzy logic and the determining rules. The evaluation of suppliers is conducted using programs MS Office Excel and MATLAB. The thesis contains a comparison of results of these two programs.

Master’s thesis describes creating of virtual reality in VRML Language with use of VRML Pad editor and VRealm Builder. The thesis consists of the described objects in Simulink 3D Animation Library which are used for 3D Virtual scenes and connection of dynamics from Matlab/Simulink. Dynamics is created in Matlab/Simulink and connected by TCP/IP protocol to system PLC S7-1500. In the PLC is program for control of technology process. Process is visualized by HMI by Siemens AG and supplied by basic setting of connected communication and technology process.

This diploma thesis deals with microrheology measured via the fluorescence correlation spectroscopy. As microrheological probes, fluorescently marked nanoparticles of 5 sizes in the range of 10-100 nm, were used. The particles had been immersed in a variety of concentrated glycerol solutions and agarose gels of different concentrations, and the FCS measurement revealed a diffusion coefficient of individual particles in each environment. Based on the coefficient, the viscosity of the glycerol needed to stop the particles could be determined. Particles of 10 nm size were not stopped even by the 100 wt% glycerol. In the case of the agarose gels, a combination of higher agarose concentration and larger particles resulted in an increase in the diffusion coefficient to an unlikely high value. This was caused probably by an agarose autofluorescence and the value indicates stopping of the particles in the given agarose gel. Later, the data acquired by the FCS measurement were converted to MSD curves using MATLAB software. The thesis discusses the influence of the experimental parameters on the shape of the MSD curve. The results showed that the number of particles and autocorrelation function have the most significant effect.