An investigation was undertaken to determine the feasibility of increasing the hydrogen production rate by coupling the water gas shift (WGS) process to the hybrid sulphur process (HyS). This investigation also involved the technical and economical analysis of the water gas shift and the H2 separation by means of Pressure swing adsorption (PSA) process. A technical analysis of the water gas shift reaction was determined under the operating conditions selected on the basis of some information available in the literature. The high temperature system (HTS) and low temperature system (LTS) reactors were assumed to be operated at temperatures of 350°C and 200°C, respectively. The operating pressure for both reactors was assumed to be 30 atmospheres. The H2 production rate of the partial oxidation (POX) and the WGS processes was 242T/D, which is approximately two times the amount produced by the HyS process alone. The PSA was used for the purification process leading to a hydrogen product with a purity of 99.99%. From the total H2 produced by the POX and the WGS processes only 90 percent of H2 is recovered in the PSA. The unrecovered H2 leaves the PSA as a purge gas together with C02 and traces of CH4, CO, and saturated H20. The estimated capital cost of the WGS plant with PSA is about US$50 million. The production cost is highly dependent on the cost of all of the required raw materials and utilities involved. The production cost obtained was US $1.41/kg H2 based on the input cost of synthesis gas as produced by the POX process. In this case the production cost of synthesis gas based on US $6/GJ for natural gas and US $0/Ton for oxygen was estimated to be US $0.154/kg. By increasing the oxygen and natural gas cost, the corresponding increase in synthesis gas has resulted in an increase in H2 production cost of US $1.84/kg. / Thesis (M.Sc. (Nuclear Engineering))--North-West University, Potchefstroom Campus, 2009.

An investigation was undertaken to determine the feasibility of increasing the hydrogen production rate by coupling the water gas shift (WGS) process to the hybrid sulphur process (HyS). This investigation also involved the technical and economical analysis of the water gas shift and the H2 separation by means of Pressure swing adsorption (PSA) process. A technical analysis of the water gas shift reaction was determined under the operating conditions selected on the basis of some information available in the literature. The high temperature system (HTS) and low temperature system (LTS) reactors were assumed to be operated at temperatures of 350°C and 200°C, respectively. The operating pressure for both reactors was assumed to be 30 atmospheres. The H2 production rate of the partial oxidation (POX) and the WGS processes was 242T/D, which is approximately two times the amount produced by the HyS process alone. The PSA was used for the purification process leading to a hydrogen product with a purity of 99.99%. From the total H2 produced by the POX and the WGS processes only 90 percent of H2 is recovered in the PSA. The unrecovered H2 leaves the PSA as a purge gas together with C02 and traces of CH4, CO, and saturated H20. The estimated capital cost of the WGS plant with PSA is about US$50 million. The production cost is highly dependent on the cost of all of the required raw materials and utilities involved. The production cost obtained was US $1.41/kg H2 based on the input cost of synthesis gas as produced by the POX process. In this case the production cost of synthesis gas based on US $6/GJ for natural gas and US $0/Ton for oxygen was estimated to be US $0.154/kg. By increasing the oxygen and natural gas cost, the corresponding increase in synthesis gas has resulted in an increase in H2 production cost of US $1.84/kg. / Thesis (M.Sc. (Nuclear Engineering))--North-West University, Potchefstroom Campus, 2009.

abstract: The worldwide demand for electric energy is slated to increase by 80% between the years 1990 and 2040. In order to satisfy this increase in load, many new generators and transmission lines are planned. Implementations of various plans that can augment existing infrastructure have been hindered due to environmental constraints, public opposition and difficulties in obtaining right-of-way. As a result, stress on the present electrical infrastructure has increased, resulting in congestion within the system. The aim of this research is to analyze three techniques that could improve the power transfer capability of the present electric grid. These include line compaction, use of high temperature low sag conductors and high phase order systems. The above methods were selected as they could be readily employed without the need for additional right-of-way. Results from the line compaction tests indicate that line compaction up to 30% is possible and this increases the power transfer capability up to 53%. Additional advantages of employing line compaction are the reduction in electric and magnetic fields, increase in system stability and better voltage regulation. High temperature low sag conductors that were applied on thermally limited lines were seen to increase the power transfer capability. However, a disadvantage of this technique was that the second most congested line, limits the power transfer capability of the system. High phase (six phase) order system was noted to have several advantages over three phase system such as lower voltage requirement to transfer equal amount of power and lower electric and magnetic field across the right of way. An IEEE 9 and 118 bus test system were used to evaluate the above mentioned techniques. / Dissertation/Thesis / M.S. Electrical Engineering 2012

Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-05-11T15:42:16Z No. of bitstreams: 1 vagnodossantosramos.pdf: 1265392 bytes, checksum: bcbde1fce37c1a25fc18362fa6e6ef15 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-17T15:17:20Z (GMT) No. of bitstreams: 1 vagnodossantosramos.pdf: 1265392 bytes, checksum: bcbde1fce37c1a25fc18362fa6e6ef15 (MD5) / Made available in DSpace on 2017-05-17T15:17:20Z (GMT). No. of bitstreams: 1 vagnodossantosramos.pdf: 1265392 bytes, checksum: bcbde1fce37c1a25fc18362fa6e6ef15 (MD5) Previous issue date: 2016-12-19 / O caso de gestão estudado analisa a implementação do Programa de Correção de Fluxo Escolar - Projeto Avançar (PA) em uma escola estadual localizada no município de Manaus, vinculada à Secretaria Estadual de Educação (SEDUC/AM) e acompanhada pela Coordenadoria Distrital 02. Os objetivos definidos para esta investigação buscam verificar as dificuldades da equipe gestora em reduzir os índices de abandono nas turmas do PA. Para isso, utilizou-se a pesquisa qualitativa, por meio de um estudo de caso. Além da análise documental, foram usados como instrumentos de coleta de dados um questionário para 16 alunos do projeto e uma entrevista semiestruturada com a gestora, a pedagoga da escola, a supervisora do distrito que acompanha o projeto na escola e nove professores que atuam no PA. No referencial, foi abordado o Projeto Avançar enquanto política de enfrentamento ao fracasso escolar e também as causas e consequências do abandono escolar. A discussão dos resultados levou em consideração a visão dos diversos atores que participam do Projeto. A análise dos dados permitiu a identificação de alguns avanços e algumas dificuldades no processo de implementação do PA como ausência de capacitação para gestores, pedagogos e professores para atuar com maior efetividade nas ações do projeto; dificuldade dos docentes no trabalho com projetos interdisciplinares; ausência de reuniões para discutir as dificuldades de realização do PA; infrequência e apatia dos alunos; e ausência da família no acompanhamento escolar do filho. Com base nos resultados dessa análise, foi elaborado um Plano de Ação Educacional com propostas que ajudarão a equipe gestora a desenvolver as ações do Projeto Avançar de forma adequada na escola, a fim de que os objetivos sejam alcançados. / The management case under study deals with the implementation of the Program for the Correction of Fluxo Escolar - Projeto Avançar (PA) at a state school in the city of Manaus, tied to the State Secretaria of Education (SEDUC/AM) and overseen by the 2nd District Coordenadoria. The goals set for this investigation check team's difficulties in reducing drop out rates in the classes within the PA. For this, was used a qualitative research, through a case study. Besides analysis of documents, were used as instruments of data collection a questionnaire for 16 students within the project and a semi-structured interview with the manager, the school pedagogue, the district supervisor that oversees the project at the school and nine teachers who work with the PA. In the referencial, the PA was discussed as a policy to face school failure and also the causes and consequences of dropping out. The discussion of the results took into account the point of view of the several actors that participated in the project. Analysis of the data made it possible to identify some advances and some difficulties regarding the PA's implementation process as a lack of training for managers, pedagogues and teachers to more effectively perform the actions of the project; teachers' difficulty in working with interdisciplinary projects; lack of meetings to discuss the difficulties in carrying out the PA; infrequent attendance and apathy from the students; and families failing to monitor their children's performance at school. With the results of this analysis, a Plano de Ação Educacional was created containing proposals that will help the managing team to adequately develop the actions of the PA at school, in order to achieve the goals.

Monitoring of public areas and their automatic real-time processing became increasingly significant due to the changing security situation in the world. However, the problem is an analysis of low-quality records, where even the state-of-the-art methods fail in some cases. This work investigates an important area of image similarity – biometric identification based on face image. The work deals primarily with the face super-resolution from a sequence of low-resolution images and it compares this approach to the single-frame methods, that are still considered as the most accurate. A new dataset was created for this purpose, which is directly designed for the multi-frame face super-resolution methods from the low-resolution input sequence, and it is of comparable size with the leading world datasets. The results were evaluated by both a survey of human perception and defined objective metrics. A hypothesis that multi-frame methods achieve better results than single-frame methods was proved by a comparison of both methods. Architectures, source code and the dataset were released. That caused a creation of the basis for future research in this field.

Diploma thesis studies a possibility of doubling track between Chlumec nad Cidlinou and Hradec Králové. It proposes some solutions which differ in the lenght of the track section where track speed is increased to 160 kmph. Also, the possibilities of elimination of railway crossings with the roads of any category are examined and overview of costs for construction.

This master thesis describes the design of increasing the efficiency of production lines with solder robots. In beginning of this work is a description of product and current process. There are also variants of design solutions for soldering palettes and the best on is chosen. The last part of this work includes design automation soldering process.

Magister Commercii - MCom / Nearly half a century after independence, the Cameroon economy has experienced little or no growth in per capita incomes in spite of the enormous natural and human potentials of the country and in spite of the huge packages of aid and subsequent debt relief received from the international donor community, suggesting a more profound cause to the development problems facing the country. Under the current WTO rules-based system of multi-lateral trade management, Cameroon, like other poor countries, is left with limited scope for effective implementation of industrial and trade policies that could bail her out of her present predicament. Against this backdrop, this study seeks to explore the fundamental determinants of sustainable growth within the context of the Cameroonian economy. While acknowledging the role of openness to international markets in promoting growth, its effects could only be maximised with the attainment of certain threshold conditions such as the availability of basic skills, provision of vital infrastructure services and public goods, and good governance. In a nutshell, for development to happen, the country needs not only well functioning markets, but also good governments that do not steal the fruits of workers' labour. Drawing on the endogenous growth models, the study suggests that incentives for investment in knowledge capital, for infrastructure provision and for good governance could bail the country out of its low level traps, setting it on the path of sustainable growth in an evermore globalising world economy.

Using a multiple baseline across participants with a changing criterion, this study explored and evaluated the effects of the individualized contingency management package (goal-setting, education, etc.) with sedentary typical adults while focusing on the mentoring component and the use of the technology of the exercise tracker to increase and sustain physical exercise to a level that increased health-benefiting physical activity. During initial mentoring meeting prior to the start of baseline, each participant was given a Garmin Viovsmart 3® exercise tracker, educated on the basic components of the device, and connected to the dashboard through the Garmin Connect™ app on their smartphones. Once each participant's activity stabilized, participant began intervention with weekly mentoring meetings focused on immediate feedback (social reinforcement), goal-setting and education. Through the Connect™ app, experimenter gave social reinforcement on a VR3 schedule to each participant, and participants were encouraged to participate by commenting to other participants through a private group set up for this study. The results indicate that the individualized contingency management package was effective for three of four participants whom increased their total activity minutes from pre-intervention range 0-104 min of weekly activity to post-intervention range of 269-404 min weekly. The two participants that completed two- and six-week maintenance checks continued to increase their total weekly activity minutes. Each of the participants showed increases in exercise during baseline that might suggest the wearable itself, along with basic instruction may be responsible for the increase in activity levels. To our knowledge, this is the first study to isolate an exercise tracker. The exercise tracker created social validity and meaningful change as it allowed participants to choose preferred exercises and plan their own exercise schedules. This helped facilitate natural generalization to their environment. Future research in behavioral health paired with technology will be far-reaching now that real-time assessments and adjustments can be made remotely. To effectively help an individual increase one's exercise and in so doing, help them increase health, has far-reaching significance, both to the individual as well to the societal reduction of the pervasive healthcare problem.

No description available.