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With growing trend in "cloud computing" and increase in the data moving into the Internet, the need to store large amounts of data by service providers such as Google, Yahoo and Microsoft has increased over time. Now, more than ever, there is a need to efficiently and securely store large amounts of data. This thesis presents an implementation of a Ramp Scheme that confidentially splits a data file into a configurable number of parts or shares of equal size such that a subset of those shares can recover the data entirely. Furthermore, the implementation supports a threshold for data compromise and data verification to verify that the data parts have not been tampered with. This thesis addresses two key problems faced in large-scale data storage, namely, data availability and confidentiality.

The diploma thesis focuses on the development of an automated integration testing tool for a company. The tool is employed to detect and report data changes that may have been caused by the modification of a database schema during the development of a software. This automation of recognizing data changes brings many advantages to the company. The tool has been developed using the C# programming language, which supports object-oriented programming, using the Microsoft Visual Studio Community 2019 software. Since the tool works with the Microsoft SQL Server database, Entity Framework, an object-relational mapping framework, has been used during the implementation of the tool.

Submitted by Geyciane Santos (geyciane_thamires@hotmail.com) on 2015-07-23T13:51:53Z No. of bitstreams: 1 Dissertação - Mikhail Yasha Ramalho Gadelha.pdf: 1839545 bytes, checksum: 9f5e7d75af46b461d8ad6837ce6ad0be (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-23T15:49:26Z (GMT) No. of bitstreams: 1 Dissertação - Mikhail Yasha Ramalho Gadelha.pdf: 1839545 bytes, checksum: 9f5e7d75af46b461d8ad6837ce6ad0be (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-07-23T15:52:49Z (GMT) No. of bitstreams: 1 Dissertação - Mikhail Yasha Ramalho Gadelha.pdf: 1839545 bytes, checksum: 9f5e7d75af46b461d8ad6837ce6ad0be (MD5) / Made available in DSpace on 2015-07-23T15:52:49Z (GMT). No. of bitstreams: 1 Dissertação - Mikhail Yasha Ramalho Gadelha.pdf: 1839545 bytes, checksum: 9f5e7d75af46b461d8ad6837ce6ad0be (MD5) Previous issue date: 2013-12-20 / FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas / The use of embedded systems, computational systems specialized to do a function in larger systems, electronic or mechanical, is growing in the daily life, and it is becoming increasingly important to ensure the robustness of these systems. There are several techniques to ensure that a system is released without error. In particular, formal verification is proving very effective in finding bugs in programs. In this work, we describe the formal verification for C++ Programs and correctness proof by mathematical induction. Both techniques will be developed using the tool Efficient SMT-Based Context-Bounded Model Checker (ESBMC), a model checker based on satisfiability modulo theories and first order logic. The experiments show that the tool can be used to check a wide range of applications, from simple test cases to commercial applications. The tool also proved to be more efficient than other models checkers to verify C++ programs, finding a greater number of bugs, and supporting a larger number of the features that the language C++ has to offer, in addition to being able to prove several properties, using the method of mathematical induction. / A utilização de sistemas embarcados, sistemas computacionais especializados para realizar uma função em sistemas maiores, eletrônicos ou mecânicos, vem crescendo no dia a dia das pessoas, e vem se tornando cada vez mais importante garantir a robustez desses sistemas. Existem diversas técnicas para garantir que um sistema seja lançado sem erros. Em especial, a verificação formal de programas está se mostrando efetiva na busca por falhas. Neste trabalho, serão descritos a verificação formal de programas C++ e a prova de corretude por indução matemática. Ambas as técnicas serão desenvolvidas utilizando a ferramenta Efficient SMTBased Context-Bounded Model Checker (ESBMC), um verificador de modelos que se baseia em teorias de satisfabilidade de fórmulas proposicionais e de lógica de primeira ordem. Os experimentos mostram que a ferramenta pode ser utilizada para verificar uma ampla gama de aplicações, de casos simples à aplicações comerciais. A ferramenta também mostrou-se superior em comparação com outros verificadores na verificação de programas C++, encontrando um maior número de erros e suportando um número superior das funcionalidades que a linguagem C++ tem a oferecer, além de ser capaz de provar diversas propriedades (por exemplo, laços invariantes), utilizando a técnica de indução matemática.

The C Navigational System (CNS) is a proposed programming environment for the C programming language. The introduction covers the major influences of programming environments and the components of a programming environment. The system is designed to support the design, coding and maintenance phases of software development. CNS provides multiple views to both the source and documentation for a programming project. User-defined and system-defined links allow the source and documentation to be hierarchically searched. CNS also creates a history list and function interface for each function in a module. The final chapter compares CNS and several other programming environments (Microscope, Rn, Cedar, PECAN, and Marvel).

This thesis describes a conceptual design of touchless fingerprint sensor and design, implementation and testing of its firmware, which is a composition of hardware implemented in VHDL and a program implemented in C. Result of this thesis can be used as the first step of building an industrial solution.

A presente pesquisa faz parte de um trabalho que visa o desenvolvimento de um método de simulação computacional que permita fazer a avaliação da qualidade da imagem radiográfica de maneira rápida e completa e que não apresente os problemas dos métodos tradicionais disponíveis e usados atualmente. Neste trabalho foi desenvolvido um método que leva em consideração e simula os parâmetros importantes dos sistemas radiológicos tais como: o tamanho e a distribuição de intensidade do ponto focal, as condições geométricas de exposição, a heterogeneidade do campo, a distribuição angular dos raios X, a grade supressora, bem como o efeito Compton. O método de simulação computacional desenvolvido realiza o controle de qualidade da imagem para um objeto colocado em qualquer posição do campo de radiação. A simulação foi feita implementando os algoritmos desenvolvidos em linguagem \"C\" e os resultados foram apresentados sob forma gráfica para facilitar a compreensão dos usuários. / This research is part of a work that aims the development of a computer simulation method which allows to evaluate the radiographic image quality in a faster and complete way, so that it doesn\'t present the problems found in the available methods used nowadays. The method developed in this work takes into consideration and simulates the important parameters of the radiologic systems such as: the focal spot size, the intensity distribution focal spot, the geometric conditions exposure, the field heterogeneity, the X-ray angular distribution, the antiscatter grid (Bucky), as well as the Compton effect. This developed computer simulation method achieves the image quality control of an object at any position of the radiation field. The simulation was done implementing the algorithms developed in C language and the results were displayed in a graphic way to facilitate the users comprehension.

Abstract The removal of overlying waste rock in open pit mines to dumps is conventionally undertaken by draglines or by trucks and shovels, or by a combination of these. Waste rock dumps are the largest remnant structures of open cut mining operations and can absorb a large proportion of the mine operating costs. If the dumps are not properly developed they can be excessively expensive and can become a major safety risk and environmental hazard. There are many examples worldwide where poor design and construction of waste rock dumps have resulted in failures causing considerable loss of life and widespread damage, or have resulted in erosion and seepage that have led to severe environmental pollution. The proper design and scheduling of waste rock dumps and haul routes can significantly reduce costs, minimise the possibility of failures, and avoid harming the environment. This Thesis is limited to the consideration of trucks and shovels for waste rock haulage in open cut mining operations. It describes the development and application of a waste rock dump scheduling model using the Operations Research technique of Mixed-Integer Linear Programming, implemented in the mathematical modelling language AMPL. The model focuses on minimising the haulage cost for each block of waste rock taken from the open pit and placed in the dump. Allowance is made for the selective placement of benign and reactive waste rock, based on an open pit block model that delineates benign and reactive waste rock. The formulation requires input data including the xyz-coordinates of the block model for the open pit, information on whether the waste rock blocks are benign or reactive, the proposed time scheduling of waste rock haulage from the open pit, unit haulage costs, and the geometry of the waste rock dump, including the delineation of the zones that are benign and those that are reactive. The model was successfully tested by using both simple test data and actual mine site data. The application of the model to a simple case confirmed that it produces results that meet the Objective Function in producing an optimal haulage time and cost, and meets the various Constraints imposed. This model for scheduling the removal of waste rock from open cut mining operations with trucks and shovels will require further research and testing and, because the results are generated in a numerical format, there will also be a need to convert them to a graphical format to facilitate their interpretation. Ultimately, it will have the potential to provide a relatively low-cost scheduling tool that meets operators’ economic, safety and environmental goals.

A presente pesquisa faz parte de um trabalho que visa o desenvolvimento de um método de simulação computacional que permita fazer a avaliação da qualidade da imagem radiográfica de maneira rápida e completa e que não apresente os problemas dos métodos tradicionais disponíveis e usados atualmente. Neste trabalho foi desenvolvido um método que leva em consideração e simula os parâmetros importantes dos sistemas radiológicos tais como: o tamanho e a distribuição de intensidade do ponto focal, as condições geométricas de exposição, a heterogeneidade do campo, a distribuição angular dos raios X, a grade supressora, bem como o efeito Compton. O método de simulação computacional desenvolvido realiza o controle de qualidade da imagem para um objeto colocado em qualquer posição do campo de radiação. A simulação foi feita implementando os algoritmos desenvolvidos em linguagem \"C\" e os resultados foram apresentados sob forma gráfica para facilitar a compreensão dos usuários. / This research is part of a work that aims the development of a computer simulation method which allows to evaluate the radiographic image quality in a faster and complete way, so that it doesn\'t present the problems found in the available methods used nowadays. The method developed in this work takes into consideration and simulates the important parameters of the radiologic systems such as: the focal spot size, the intensity distribution focal spot, the geometric conditions exposure, the field heterogeneity, the X-ray angular distribution, the antiscatter grid (Bucky), as well as the Compton effect. This developed computer simulation method achieves the image quality control of an object at any position of the radiation field. The simulation was done implementing the algorithms developed in C language and the results were displayed in a graphic way to facilitate the users comprehension.

The concept of translating source code into other target programming languages is extensively used in a wide area of applications. Danfoss Power Solutions AB, a company located in Älmhult, strives to streamline their way of software development for microcontrollers by implementing this idea. Their proprietary software tool PLUS+1 GUIDE is based on the CAN bus communication network, which allows electronic control units to share data represented in the XML format. Due to compatibility problems, the application in the electronic control units requires this data to be translated into the source code in the low-level C programming language. This thesis project proposes an approach for facilitating this task by implementing a source-to-source compiler that performs the translation with a reduced level of manual user involvement. A literature review was conducted in order to find the existing solutions relevant to our project task. An analysis of the provided XML input files was thereafter performed to clarify a software design suitable for the problem. By using a general XML parser, a solution was then constructed. The implementation resulted in a fully functional source-to-source compiler, producing the generated C code within a time range of 73–85 milliseconds for the input test files of typical size. The feedback received from the domain experts at Danfoss confirms the usability of the proposed solution.