Filmes amorfos de nitreto de alumínio (AlN) foram preparados por sputtering de rádio frequência convencional em um alvo de Al+Cr e plasma de nitrogênio puro. A área relativa de Al-Cr determina o conteúdo de Cr, o qual esteve em um intervalo de concentração de ~ 0 3.33 at.% no presente estudo. A deposição dos filmes foi seguida por tratamento térmico das amostras até 1050 ºC e por caracterização espectroscópica através de medidas de EDS (Energy Dispersive Spectrometry), Foto-luminescência e Transmissão Óptica. De acordo com os resultados experimentais, as propriedades óptico-eletrônicas dos filmes de AlN contendo Cr são altamente influenciadas tanto pela concentração de Cr como pela temperatura de tratamento térmico. Na verdade, o tratamento térmico a 1050 ºC induz o desenvolvimento de estruturas que, devido ao seu tamanho típico e características espectrais exclusivas, foram designadas por micro-estruturas de rubi (RbMSs). Estas RbMSs são rodeadas por um meio rico em nitrogênio no qual os íons Cr3+ apresentam características luminescentes não encontradas na literatura. A emissão de luz apresentada pelas RbMSs e suas vizinhanças foram investigadas de acordo com o conteúdo de Cr e a temperatura de medida permitindo a identificação de várias linhas luminescentes relatadas do Cr3+. As principais características destas linhas luminescentes e correspondentes processos de recombinação-excitação são apresentados e discutidos tendo em vista uma análise espectroscópica detalhada. / Films of amorphous aluminum-nitride (AlN) were prepared by conventional radio frequency sputtering of an Al+Cr target in a plasma of pure nitrogen. The Cr-to-Al relative area determines the chromium content, which stayed in the ~ 0 3.33 at.% concentration range in the present study. Film deposition was followed by thermal annealing the samples up to 1050 ºC and by spectroscopic characterization through energy dispersive spectrometry (EDS), Photo-luminescence and Optical Transmission measurements. According to the experimental results, the optical-electronic properties of the Cr-containing AlN films are highly influenced by both the Cr concentration and the temperature of the thermal treatments. In fact, thermal annealing at 1050 °C induces the development of structures which, because of their typical size and unique spectral characteristics, were designated by ruby microstructures (RbMS\'s). These RbMS\'s are surrounded by a nitrogen-rich environment in which Cr3+ ions exhibit luminescent features with no counterpart in the literature. The light emission presented by the RbMS\'s and surroundings were investigated according to the Cr content and temperature of measurement allowing the identification of several Cr3+-related luminescent lines. The main characteristics of these luminescent lines and corresponding excitation-recombination processes are presented and discussed in view of a detailed spectroscopic analysis.

In 1960, when Ruby Bridges was six-years-old, she desegregated the formerly all white William Frantz Elementary School in New Orleans, Louisiana. This thesis traces her formation as a Civil Rights icon and how her icon narratives are influenced by, perpetuate, or challenge hegemonic memory of the Civil Rights Movement. The hegemonic narrative situates the Civil Rights Movement as a triumphant moment of the past, and is based upon the belief that it abolished institutionalized racism, leaving us in a world where lingering prejudice is the result of the failings of individuals. Analysis of narratives about Ruby Bridges by Norman Rockwell, Robert Coles, and Bridges herself show that there is a consistent shift over time in which the icon narratives conform to and reinforce the hegemonic narrative. These icon narratives situate Bridges’ story as a historical account of the past that teaches lessons of how to combat instances of interpersonal racism through kindness and tolerance, and obscures Bridges’ lived experience. These reductive stories demonstrate just how powerful the hegemonic narrative is and create a comforting morality tale that pervades dominant culture and prevents us from understanding and finding ways to combat the institutionalized racism and inequality that still exists within the United States.

Estudamos o efeito de Conjugação de Fase por Mistura Degenenerada de Quatro Ondas em Al2O3:Cr+3 (Rubi) e GdAlO3:Cr+3 com um laser de Ar (λ=5145 Å). Obtivemos eficiência aproximadamente quatro vezes maior no GdAlO3:Cr+3 (onde este trabalho é original) que no Rubi o que nos motivou a investigar as propriedades físicas que são relevantes para o fenômeno nestes sistemas (isto não foi bem compreendido no trabalho anterior em Rubi). Desenvolvemos um método interferométrico muito sensível para medida dos coeficientes não lineares do índice de refração n2 destes materiais (que não eram conhecidos) Com estes valores de n2 calculamos a eficiência de Conjugação de Fase em bom acordo com experiência. / We have studied the effect of Phase Conjugation by Degenerate Four Wave Mixing in Al2O3:Cr+3 (Rubi) and GdAlO3:Cr+3 with an Ar (λ=5145 Å). We obtained efficiency ?approximately? 4 times greater in GdAlO3:Cr+3 (where this work is original) than in Rubi and this have motivated us to investigate the physical properties that are important to explain this phenomenon in these materials (what wasn\'t well understood in the previous paper on Rubi(10)). We developed an interferometric method very sensitive to measure the nonlinear coeficient of refractive index n2 of these materials (what wasn\'t known). With these values of n2 we calculated the efficiency of the Phase Conjugation in good agreement with the experience.

Filmes amorfos de nitreto de alumínio (AlN) foram preparados por sputtering de rádio frequência convencional em um alvo de Al+Cr e plasma de nitrogênio puro. A área relativa de Al-Cr determina o conteúdo de Cr, o qual esteve em um intervalo de concentração de ~ 0 3.33 at.% no presente estudo. A deposição dos filmes foi seguida por tratamento térmico das amostras até 1050 ºC e por caracterização espectroscópica através de medidas de EDS (Energy Dispersive Spectrometry), Foto-luminescência e Transmissão Óptica. De acordo com os resultados experimentais, as propriedades óptico-eletrônicas dos filmes de AlN contendo Cr são altamente influenciadas tanto pela concentração de Cr como pela temperatura de tratamento térmico. Na verdade, o tratamento térmico a 1050 ºC induz o desenvolvimento de estruturas que, devido ao seu tamanho típico e características espectrais exclusivas, foram designadas por micro-estruturas de rubi (RbMSs). Estas RbMSs são rodeadas por um meio rico em nitrogênio no qual os íons Cr3+ apresentam características luminescentes não encontradas na literatura. A emissão de luz apresentada pelas RbMSs e suas vizinhanças foram investigadas de acordo com o conteúdo de Cr e a temperatura de medida permitindo a identificação de várias linhas luminescentes relatadas do Cr3+. As principais características destas linhas luminescentes e correspondentes processos de recombinação-excitação são apresentados e discutidos tendo em vista uma análise espectroscópica detalhada. / Films of amorphous aluminum-nitride (AlN) were prepared by conventional radio frequency sputtering of an Al+Cr target in a plasma of pure nitrogen. The Cr-to-Al relative area determines the chromium content, which stayed in the ~ 0 3.33 at.% concentration range in the present study. Film deposition was followed by thermal annealing the samples up to 1050 ºC and by spectroscopic characterization through energy dispersive spectrometry (EDS), Photo-luminescence and Optical Transmission measurements. According to the experimental results, the optical-electronic properties of the Cr-containing AlN films are highly influenced by both the Cr concentration and the temperature of the thermal treatments. In fact, thermal annealing at 1050 °C induces the development of structures which, because of their typical size and unique spectral characteristics, were designated by ruby microstructures (RbMS\'s). These RbMS\'s are surrounded by a nitrogen-rich environment in which Cr3+ ions exhibit luminescent features with no counterpart in the literature. The light emission presented by the RbMS\'s and surroundings were investigated according to the Cr content and temperature of measurement allowing the identification of several Cr3+-related luminescent lines. The main characteristics of these luminescent lines and corresponding excitation-recombination processes are presented and discussed in view of a detailed spectroscopic analysis.

This master‘s thesis deals with the design and implementation of a web application for the management of diploma theses for students and their supervisors. It defines theoretical starting points for web applications. Based on requirements and analysis of current solutions, it provides a proposal for application, description of implementation, economic evaluation and summary of benefits.

This thesis is a documentation covering complete design process of a web server for reviewing Work and Travel programs and other opportunities for working and travelling abroad, mainly focused on young people. It describes not only the concept of the user interface and application implementation, but also a business plan for running the website and making it pro table. This project called GapPacker is intended as a start-up, aggregating various programs and articles from the world of Work and Travel and its main income will come from paid clicks through to registrations or websites of providers o ering the programs. After its introduction on the Czech market, it has ambitions to expand to other European markets.

Made available in DSpace on 2016-06-02T19:06:01Z (GMT). No. of bitstreams: 1 4801.pdf: 4117819 bytes, checksum: b4df67024157ee1a2c79256315a97e7d (MD5) Previous issue date: 2012-11-13 / Universidade Federal de Sao Carlos / Software development techniques continually evolve in order to improve development and maintenance processes in addition to lower costs and higher quality. The goal of MDD is to reduce the semantic distance between a problem and its solution specification. Therefore MDD focuses on high-level abstraction modeling and successive model transformations, until finally, generate code. Studies assert that model-driven development can be significantly more efficient than traditional source code-driven software development and still reduce the possibility of occurrence of several problems during the software life-cycle. Likewise, Web engineering can also be benefited by MDD adoption, especially when supported by approaches that facilitate MDD use. Web development is usually agile with frequent releases, these approaches must be flexible to adapt to this context. However, generally, the approaches proposed by the academic community have complex processes which involve many different model definitions, programming languages, plug-ins and IDEs. These features contradict the practices adopted by Web developers. This paper presents the MWDA (Model-Driven Web Applications) approach that provides a simple process to support model-driven web development. This approach does not depend on tools, technologies or plug-ins and encourage combination with other forms of reuse and development processes. Furthermore, the Ruby- MDWA was developed with Ruby language and Ruby on Rails framework support, in order to create Web applications with MDWA assistance. This tool provides a set of textual models and defines M2M and M2C transformation tools, maintaining the requirements traceability since its specification to its construction and further maintenance. In order to show the use of the approach and tool, it was performed a real study case with a software company, from São Carlos SP, where a project management system was developed. In parallel, two experiments were conducted with undergraduate students in Computer Science and Computer Engineering and a Masters in Computer Science, to evaluate the gains and limitations of the Ruby-MDWA tool. / As técnicas de desenvolvimento de software evoluem continuamente com a finalidade de melhorar processos de construção e manutenção de software, além de obter ganhos em tempo, custo e qualidade. O objetivo do MDD é reduzir a distância semântica entre um problema e a especificação de sua solução. Para isso, MDD tem enfoque na modelagem de alto nível de abstração e em sucessivos refinamentos dos modelos construídos em artefatos mais detalhados, até enfim, gerar código. Há afirmações de que o desenvolvimento orientado a modelos pode ser significativamente mais eficiente que o desenvolvimento tradicional guiado por código fonte, além de reduzir a possibilidade de ocorrência de uma série de problemas durante o ciclo de vida do software. Da mesma forma, a engenharia de aplicações Web também pode ser beneficiada pela adoção de MDD, em especial com o apoio de abordagens que facilitem sua utilização. Como o desenvolvimento de aplicações Web comumente é ágil e com publicações freqüentes, essas abordagens devem ser flexíveis para que se adaptem a esse contexto. Entretanto, em geral, as abordagens propostas pela comunidade acadêmica apresentam processos complexos que envolvem diversos modelos, linguagens de programação, plug-ins e ambientes de programação. Essas características contrariam as práticas aprovadas pelos desenvolvedores Web. Esta dissertação apresenta a abordagem MDWA (Model-Driven Web Applications) que fornece um processo simples para desenvolvimento de software Web com apoio de MDD. A abordagem não depende de ferramentas, tecnologias ou plug-ins e estimula a combinação com outras formas de reuso e processos de desenvolvimento. Além disso, foi construída uma ferramenta, denominada Ruby-MDWA, baseada na linguagem Ruby e no framework Ruby on Rails destinada à criação de aplicações Web com auxílio da abordagem MDWA. Essa ferramenta fornece um conjunto de quatro modelos textuais e define transformadores M2M e M2C, que mantém a rastreabilidade de um requisito desde sua especificação até sua construção e posterior manutenção. Para mostrar o uso da abordagem e da ferramenta, foi realizado um estudo de caso real em conjunto com uma empresa de software de São Carlos SP, onde um sistema de gerenciamento de projetos foi desenvolvido. De forma paralela, foram conduzidos dois experimentos com alunos de graduação em Bacharelado em Ciência da Computação e Engenharia de Computação e mestrado em computação da UFSCar, visando avaliar os ganhos e as limitações da ferramenta Ruby-MDWA.

This diploma thesis deals with measuring touches problems in industrial metrology. Thesis describes adhesive wear and tear which is caused by measuring probes when dynamical measuring is being concluded. Measuring of damaged component made of silumin and its different changes of texture by different measuring probes are evaluated. Measuring touches are made of titanium nitride, silicon nitride, zirconium, bearing chrome steel, ruby, experimental composite material and nanocrystalline diamond.

This master's thesis explores the topic of guidance for the COBIT framework and ITIL library in the context of business process management. It encompasses various process modelling languages and diagrams for companies active in information and communication technologies. Through the selected ARIS tool set and the mapping of all 64 processes, the establishment of individual processes can now be achieved, which is explained by modelling a total of 101 diagrams. The thesis also contains an example of process deployment for a selected company, which is accompanied by an implementation of a dashboard application that monitors the ticket flow of service operation processes.

This diploma thesis deals with a design and construction of an embeded camera trap with a video recording and night vision support, which is able to self adapt to surroundings. The device is based on the Raspberry Pi platform and configurable by touch screen control with a user-friendly graphical interface. Also the web-application for easy remote administration was developed in Ruby On Rails framework. The camera trap was built and successfully tested under the real conditions. There are also typical application cases and requirements for camera trap construction described in this thesis.