A map reduce seismic texture analysis and barricaded boundary minority LS-SVM framework for marine seismic exploration data -

Thesis. M.S. American University of Beirut. Computational Science Program, 2014. T:6039Advisor : Dr. Mariette Awad, Assistant Professor, Electrical and Computer Engineering ; Members of Committee : Dr. Nabil Nassif, Professor, Mathematics ; Dr. Mazen Saghir, Associate Professor, Computer Engineering, TAMUQ.Includes bibliographical references (leaves 96-100)Oil and gas exploration involves different complex and costly procedures. Specially designed vehicles (trucks or ships) send sound waves and collect their reflections using a set of predesigned geometrically distributed sensors. Further analysis is performed to extract the different seismic attributes which help identify the different lithological formations such as oil and gas reservoirs. The analysis also helps identify suitable drilling sites and estimate oil or gas quantity for business men and economists to assess the drilling risks and costs which can reach up to 1Billion dollars. In short, seismic data analysis is a distributed big data analysis by excellence: it involves many complex and computationally expensive operations from massive data acquisition, to data processing and data analysis. In this thesis, seismic data acquisition, processing and analysis are described to highlight the complexity of the problem. The overall seismic data processing and analysis flow are migrated into a distributed design that uses the Map-Reduce Paradigm. A sample seismic texture analysis is carried out to identify target locations in an oil bearing site where slices of a 3D seismic block data are processed separately to extract window samples and their corresponding Haralick attributes using the Grey Level Co-occurrence Matrix (GLCM). We propose the Barricaded Boundary Minority Oversampling Method (BBMO) which is based on a modification of the least square support vector machine (LS-SVM) since it can be easily distributed due to its equivalent incremental form. BBMO oversamples the minority samples at the boundary in the direction of its closest majority samples to fix the problem of data imbalance caused by the fact that oil bearing sites in a specific field are usually less than the non-bearing sites resulting in imbalance in the seismic exploration data. All operations are described and profiled to find the computationally most expensive in our proposed framework. Experimental results on BBMO performance and com

Loading and aging of electrical power transformers and main aspects to condition-based maintenance

Orientador: José Pissolato FilhoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de ComputaçãoResumo: O transformador é o maior ativo, o mais importante e o mais caro do sistema elétrico de potência. Este estudo tem a finalidade de apresentar uma metodologia e um processo de análise do ciclo de vida útil de transformadores de potência baseada na condição, para evitar perda de vida adicional devido ao acréscimo de carga em condição de contingência no sistema. A abordagem foi feita em duas fases e abrangem tanto a metodologia da norma ABNT como a norma do IEEE. Na primeira fase é verificado o comportamento do modelo térmico devido a sobrecargas e, na segunda, a influência das condições do óleo isolanteAbstract: The transformer is the largest, most expensive, most important asset in the electric power system. This study will present a methodology to analyze the useful life of power transformers based on their condition, in order to avoid incremental loss of life caused by overload under contingent operating conditions. The approach has been performed in two phases, following both ABNT and IEEE standards. In the first phase, a thermal model evaluates the effect of overloads on transformers' useful life. In the second phase, the influence of the conditions of the insulating oil is verifiedMestradoEnergia EletricaMestre em Engenharia Elétric

Integrating building shape optimization into the architectural design process

The evolution of the architectural design process is associated with technological progress and the constitution of the design team. The design process is continuously enhanced by the development of computer softwares that allow quantification and visualization of design-related parameters. The main aim of this paper is to improve the early stages of a design process by presenting an approach that allows defining optimal building shapes informed by incident solar radiation requirements. This tool allows the design team to explore design options that require reduced energy use for a particular date and location. A non-linear optimizer using the interior point method is employed. Decreases in insolation vary between 23% and 53% and are related to building dimensions and site limits. Architectural design in warm/hot contexts that starts with a shape that is optimized to receive minimum solar radiation presents a significant advantage in terms of reduced energy use in buildings. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group

Experience with Biosynthetic Human Insulin in Diabetes

Thirty diabetic patients new to insulin were entered in an open label prospective study of biosynthetic human insulin (BHI). All patients experienced symptomatic control of diabetes attributable to dietary and BHI insulin therapy. Detailed six-month evaluation data were reviewed in 19 patients. A significant drop in fasting plasma glucose and glycosylated hemoglobin was noted at two months, and a further modest decrease occurred at six months. E. coli polypeptide antibodies were unchanged from baseline at six months, indicating that no bacterial protein contamination of BHI occurred. Percent binding of serum antibodies to human insulin measured in 19 patients at baseline and at six months showed a statistically significant increase in mean value without accompanying clinical symptoms. Clinical hypoglycemia did not differ from that seen in patients who received animal insulin. Biosynthetic human insulin appears comparable in clinical efficacy and safety to purified pork insulin. Ongoing studies will be required to determine whether BHI is less immunogenic than purified pork insulin

Towards distributed acceleration of image processing applications using reconfigurable active SSD clusters: A case study of seismic data analysis

In this work, we propose a high performance distributed system that consists of several middleware servers each connected to a number of FPGAs with extended solid state storage that we call reconfigurable active solid state device (RASSD) nodes. A full data communication solution between middleware and RASSD nodes is presented. We use seismic data analysis as a case study to quantify how and by how much RASSD nodes can accelerate computational throughput. Speedup of seismic data prediction time when both GLCM and Haralick features are accelerated is examined. The distributed system achieves 102× speedup compared to 4-thread openMP implementation and 265× speedup compared to single thread modern CPU performance. Performance is 5× better than previous work reporting speedup on GLCM and Haralick feature analysis when data is local to the FPGA and 20× better than an identical CUDA implementation using modern GPU. Copyright © 2018 Inderscience Enterprises Ltd

The Impact of Child Adjustment to Preschool on Maternal Separation Anxiety

The purpose of the proposed study is to examine longitudinally how a mother’s perception of her child’s temperament and adjustment to preschool may mediate the relationships found in previous research between maternal separation anxiety and maternal role conflict, child care satisfaction, and job satisfaction. Approximately 110 working mothers with preschool-aged children participated in this study. In order to account for higher drop out rates that are associated with longitudinal research designs, approximately 200 mothers from various ethnic and SES backgrounds will be recruited from preschools and day care centers in the Maryland and Virginia suburbs of Washington, D.C. A participant will only be included in the sample if she is working at least 15 hours per week and has a preschool-aged child (age 2-6 years). A child can be attending no higher than a kindergarten class level to be considered a preschooler. The results of this study suggest that child temperament is significantly related to both a child’s adjustment to preschool and maternal separation anxiety. However, The results of the current study suggest that a child’s positive adjustment to preschool or day care does not effect the relationships between MSA at Time 1 (i.e., the beginning of the school year) and MSA at Time 2 (i.e., 4 months later), nor does it mediate MSA and role strain as measured by scales of work-family conflict, or MSA and maternal job satisfaction, nor MSA and maternal child care satisfaction. The possible implications of this research are explored

The impact of child adjustment to preschool on maternal separation anxiety

The purpose of the proposed study is to examine longitudinally how a mother's perception of her child's temperament and adjustment to preschool may mediate the relationships found in previous research between maternal separation anxiety and maternal role conflict, child care satisfaction, and job satisfaction. Approximately 110 working mothers with preschool-aged children participated in this study. In order to account for higher drop out rates that are associated with longitudinal research designs, approximately 200 mothers from various ethnic and SES backgrounds will be recruited from preschools and day care centers in the Maryland and Virginia suburbs of Washington, D.C. A participant will only be included in the sample if she is working at least 15 hours per week and has a preschool-aged child (age 2–6 years). A child can be attending no higher than a kindergarten class level to be considered a preschooler. The results of this study suggest that child temperament is significantly related to both a child's adjustment to preschool and maternal separation anxiety. However, the results of the current study suggest that a child's positive adjustment to preschool or day care does not effect the relationships between MSA at Time 1 (i.e., the beginning of the school year) and MSA at Time 2 (i.e., 4 months later), nor does it mediate MSA and role strain as measured by scales of work-family conflict, or MSA and maternal job satisfaction, nor MSA and maternal child care satisfaction. The possible implications of this research are explored

Le grand tabou : l'amour surréaliste en Égypte

Dans ce mémoire, il est intéressant de faire une comparaison entre la France et l’Égypte. Nous avons choisi la France comme pays fondateur, car le surréalisme est né à Paris et nous avons choisi l’Égypte car il est pertinent d'étudier comment l’amour surréaliste peut être exprimé en Égypte, malgré le fait que le conservatisme demeure la norme