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Uma análise bayesiana para dados composicionais
(Universidade Federal de São Carlos, 2005-03-03) Obage, Simone Cristina; Achcar, Jorge Alberto; https://lattes.cnpq.br/3125027713681936; https://lattes.cnpq.br/4186813257353303
Compositional data are given by vectors of positive numbers with sum equals to one. These kinds of data are common in many applications, as in geology, biology, economy among many others. In this paper, we introduce a Bayesian analysis for compositional data considering additive log-ratio (ALR) and Box-Cox transformations assuming a mul- tivariate normal distribution for correlated errors. These results generalize some existing Bayesian approaches assuming uncorrelated errors. We also consider the use of expo- nential power distributions for uncorrelated errors considering additive log-ratio (ALR) transformation. We illustrate the proposed methodology considering a real data set.
PHOENIX: uma abordagem para reengenharia de software orientada a aspectos
(Universidade Federal de São Carlos, 2005-03-03) Garcia, Vinícius Cardoso; Prado, Antonio Francisco do; https://lattes.cnpq.br/2668568143800755
The continuous technological evolution makes many systems become obsolete due to changes in hardware and software platforms, although the fact that they attend their requirements and that they are stable. Software reengineering, integrated with modern techniques of reverse and forward engineering, can be the solution to reconstruct these systems reusing the knowledge embedded in the code and the available documentation. Even when current reengineering techniques are used, some problems regarding the legibility of the code are found in the reconstructed systems. Recently developed systems making use of modern techniques for object oriented analysis, design and implementation using software patterns also have these problems. Thus, motivated by the ideas of a better solution to improve systems codes legibility that have already been built, we intend to investigate an approach to rebuild such systems, obtaining their project and code restructured in a more readable and organized way. The approach combines reverse engineering techniques, component-based modeling, software transformation, and Aspect-Oriented Programming to reconstruct software systems from legacy code and available documentation. The code and the documentation of the reconstructed system are structured according to Aspect-Orientation, which facilitates its maintenance and continuous evolution and complies with new hardware and software technologies. The main mechanisms for the execution of the approach are a Transformational System and a CASE tool, which automates most of the software engineer tasks.
Proposta de estrutura e de método para coordenação da qualidade em cadeias de produção agroalimentares.
(Universidade Federal de São Carlos, 2005-03-03) Borrás, Miguel Angel Aires; Toledo, José Carlos de; https://lattes.cnpq.br/9421627326330417
The questions on food quality and food safety are main problems to elaborate healthy agri-food products from ecological process. Those factors, associated with the increasing agri-food sector s competitiveness are basics to conquest new competitive levels by agri-food supply chains (ASC). It follows that is primordial that ACS achieves the assurance of the quality and safety for its products. This can be obtained with the integrated management of quality in the production stages performed along all chain. On this thesis, the type of management which reaches all ACS is called quality coordination. The thesis proposes a structure (Structure for Quality Coordination SQC) and a method (Method for Quality Coordination MQC) which can help the ACS to coordinate the quality into its segments. Thus, the research is based on wide bibliography revision that discusses theoretical concepts on agri-food chain, supply chain, quality management, agri-food coordination and change theories. This revision generated: a) the quality coordination concept; b) the proposal of the SQC and MQC; and c) the SQC/MCQ Implantation Procedure (SMIP). The SQC is composed of the own ACS with its segments and agents, coordinating agent, quality product and quality management requirements and for the MQC. The MQC is composed of eight modules which claims: a) to identify the Demanded Quality (DQ) and deploy it in product and management requirements; b) to follow and evaluate the quality management practices and ACS performance indicators; and c) to propose and control improvement plans. Besides, the SQC and the MQC was evaluated in workshop accomplished with representatives of alcohol and sugar factories and rural producers. A brief illustration of the SMIP and SQC/MQC using in the Brazilian apple ACS is presented too. On this illustration is discussed the financial and technical viability of the SCQ/MQC. Therefore with a wide theoretical background is possible conclude that the SCQ and MQC can contribute to assure the quality and safety of agri-food products, improving the ACS competitiveness.