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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
51

La valeur ajoutée de la normalisation : étude du cas Total EP dans l'amont pétrolier / The add value of standardization : the Total E&P in upstream oil industry case study

Hamberger, Mael 25 February 2015 (has links)
La normalisation est l'activité de production des règles qui prescrivent des pratiques productives par une obligation de résultat (caractéristiques d'un produit) ou de moyens (caractéristiques d'une procédure productive), elles peuvent être élaborées au sein des entreprises ou à un niveau sectoriel. Notre recherche contribue à éclairer deux types d'enjeux économiques de la normalisation identifiés dans l'amont pétrolier : le premier renvoie à l'évaluation des coûts et des avantages du recours à des normes sectorielle dans l'élaboration des systèmes de règles applicables par les opérateurs de l'entreprise ; le second renvoie à l'évaluation des modes de normalisation, notamment à l'idée que, plus que la normalisation interne à l'entreprise, l'investissement dans la normalisation sectorielle permettrait la structuration concurrentielle de l'amont pétrolier.Tout d'abord, l'usage de règles est indispensable pour pouvoir opérer, notamment dans la durée (assurer un niveau de sécurité et d'efficacité permettant l'accès à la ressource et réduisant les risques d'accident majeur) ; ensuite l'identification des vecteurs de gains de la normalisation – couplée à l'analyse conventionnaliste de la qualité et des mondes de production – aide à distinguer quatre types de produits correspondant à quatre situations d'interfaces pour lesquelles différents mix de normalisation (sectorielle, interne,…) doivent être recherchés. Enfin la prévention des risques (parfois extrêmement coûteux) et plus généralement la gestion de la qualité sont impactées positivement par la normalisation sectorielle.Néanmoins les gains obtenus dans notre cas pratique ne peuvent pas être transposés à d'autres cas pratiques puisque la question des gains de la normalisation ne peut trouver de réponse universelle compte tenu de la diversité des types de normes d'une part, et des types d'interfaces et de situations productives concernées d'autre part. / Standardization activities are dedicated to the elaboration of rules which are used to prescribe practices through obligations of results (product characteristics) or obligations of means (production processes characteristics). These rules can be elaborated by firms or by industry associations. Our study contributes to answer two economic questions of the oil upstream industry. The first one is the measurement of the added value of the use of industry standards in the elaboration of the firm references documents collections (its technical specifications). The second one is related to the different types of standardizations and the idea that industry standardization is a tool to organize concurrency of the market in the oil industry.Firstly, the use of standards is essential to produce efficiently, safely (without accident) for many years and often essential in order to access natural resources. Secondly the identification of the main sources of standardization benefits, in addition to the conventionalist analyze of quality and of the “mondes de production” help us to identify four productive interfaces for which a mix of standardization (with internal and external standardization) is more adapted. Finally the prevention of risks, and more globally the quality management, is positively impacted by industrial standardization.Nevertheless, the gains observed in our case study cannot be transposed to other case studies because, as the institutionalism theory and the conventionalism theory explain, the interrogation about the benefits of standardization cannot be completely resolved because of the diversity of the type of standards in one side, and the diversity of production situations in the other side.
52

The legal management of risk in oil and gas operations upon the United Kingdom continental shelf

Gordon, Greg January 2017 (has links)
This thesis is concerned with the legal management of risk in oil and gas operations upon the United Kingdom Continental Shelf. The work focusses in particular upon geological risk, political risk and the regulatory and commercial risks pertaining to major accidents. Geological risk relates to the fact that generally, oil and gas is concealed within geological formations in the deep underground. Exploration activity is, as a result, both difficult and expensive. The thesis considers the extent to which the UK's chosen licensing system has struck an appropriate balance on who should bear the risk of failure of such operations. Political risk involves (on the one hand) the risks faced by investors in interacting with the state and (on the other) the risks faced by the state when designing its regulatory system. Investors are in a precarious position due to the high level of capital investment and long-term nature of oil and gas operations: they are therefore concerned to ensure stability and autonomy of operation. The state, on the other hand, is concerned that it is not taken advantage of by the (usually more knowledgeable) industry player when designing its regulatory system. The risk of major accident is reflected both in regulation of health, safety and the environment and in the contractual arrangements entered into by commercial entities in order to determine which party should bear ultimate liability in the event that an accident causes wide-spread loss. Having regard to the example of the law applied on the UK continental shelf, the thesis demonstrates that while risk can never be wholly removed from oil and gas operations, the law can be effectively used to mitigate risk and thereafter to facilitate he appropriate distribution of such residual levels of risk as remain.
53

Renda de informação nos leilões de exploração de petróleo no Brasil: uma estimação não-paramétrica com assimetria entre os agentes / Information rent in the exploration auctions of oil in Brazil: a non-parametric estimation assuming asymmetry between the participants

Eric Universo Rodrigues Brasil 30 November 2009 (has links)
Esta dissertação tem como objetivo estimar a renda de informação apropriada pelos vencedores dos leilões para exploração e produção de petróleo e gás natural no Brasil. Assume-se um modelo estrutural de leilão de valor privado independente. Foram estimadas as distribuições dos lances e dos valores privados dos lançadores de forma não-paramétrica, assumindo assimetria entre os participantes (Petrobras+OGX versus outros). Para isso, explorou-se um banco de dados construído a partir de informações de todos os leilões realizados entre 1999 e 2008. Tal estudo é relevante por tentar avaliar o sucesso do governo brasileiro e das empresas licitantes nestes leilões, principalmente diante da discussão do novo marco regulatório do pré-sal. Os resultados sugerem que a Petrobras e a OGX obtiveram rendas de informação significativamente maiores que as demais concorrentes. Tais rendas variam entre 14% e 63%, dependendo do número de competidores e de seu tipo. De maneira geral, o governo tende a extrair maior parte do preço de reserva do vencedor do leilão quando este não é a Petrobras ou a OGX e quanto maior for o número de concorrentes. / This dissertation aims to estimate the information rent grabbed by the winners of auctions for exploration and production of oil and natural gas in Brazil. It assumes a structural model of independent private values for the auctions. We estimated non-parametrically both the distributions of bids and the distribution of private values from bidders, assuming asymmetry between the participants (Petrobras + OGX versus others). For this, we explored a database with information about all the auctions held between 1999 and 2008. This study is relevant since it tries to assess the success of the Brazilian government and bidders in these auctions, especially before the discussion on the new regulatory framework of pre-salt. Results suggest that Petrobras and OGX obtained information rents significantly higher than other competitors. These rents vary between 14% and 63%, depending on the number of competitors and on their types. In general, the government tends to capture most of the reserve price of the winning bidder when it is not Petrobras or OGX and the greater the number of competitors.
54

Renda petrolífera: geração e apropriação nos modelos de organização da indústria brasileira / OIL RENT: GENERATION AND APPROPIATION IN THE ORGANIZATIONAL MODEL OF BRAZILIAN OIL INDUSTRY

Lizett Paola López Suárez 20 December 2012 (has links)
Esta tese teve como objetivo analisar o processo de geração e apropriação da renda petrolífera nos modelos de organização adotados pela indústria brasileira de petróleo. O interesse pelas jazidas de petróleo tem sua origem nas altas rendas geradas na cadeia produtiva, principalmente na fase de exploração, as quais podem ser apropriadas por quem exerce a propriedade sobre o recurso. O entendimento da moderna indústria petrolífera brasileira em um contexto de altos preços de petróleo, de incremento da produção e da descoberta de grandes acumulações de petróleo no pré-sal, leva à discussão em torno da disputa da riqueza gerada, o modelo de organização da indústria e o papel da empresa estatal, PETROBRAS. Tais aspectos foram avaliados seguindo uma perspectiva histórica, baseada no estudo da renda marxista e na aplicação de categorias concretas de análise à indústria petrolífera, abrangendo no período de estudo o pré-monopólio do petróleo, a consolidação da indústria petrolífera com bases estatais, o modelo de concessão e o modelo misto para explorar o pré-sal. A indústria petrolífera mexicana e venezuelana foram estudadas como referencia. Realizada a análise, identificou-se - dada a disponibilidade de recursos petrolíferos orientados a atender o abastecimento interno - o predomínio de excedente econômico gerado no mercado nacional e em menor medida uma renda petrolífera, diferencial e absoluta conseguida no mercado internacional. Também se constatou que dentro do estado nacional moldou-se um processo de disputa do excedente econômico nas suas várias etapas históricas, já que, uma vez definida a hegemonia sobre o petróleo, a disputa pelos excedentes se dá no seio do próprio Estado, entre os estados e os municípios. Concluiu-se que o modelo de organização da indústria petrolífera brasileira é resultado da disputa pelas forças envolvidas na apropriação da renda petrolífera. / This thesis aims to analyze the process of generation and appropriation of oil rent in the organizational models adopted by the Brazilian oil industry. Interest in owning of petroleum fields has its origin in the high rents generated in the production chain, especially in the exploration phase, which may be appropriated by whoever has the property rights on the resource. The understanding of modern Brazilian oil industry in a context of high oil prices; the increase of production and the discovery of large accumulations of oil in pre-salt, leads to discussions around the dispute of the wealth generated, the organizational model of the industry and the role of state-owned company, PETROBRAS. These aspects were evaluated following a historical perspective, based on the study of Marxist rent theory and the application of concrete categories of analysis specific to the oil industry, covering in the period of the study the pre-monopoly, the consolidation of the oil industry with state basis, the concession model and the mixed model to explore the pre-salt. Given the availability of oil resources geared to meet domestic supply during the analysis it was identified the predominance of economic surplus generated in the domestic market and to a lesser extent, a differential and absolute rent achieved in the international market. On the other hand, also within the national state a process of dispute of that economic surplus was shaped, once defined hegemony over oil the dispute for economic surpluses occurs within the state itself, between the states and municipalities. It was concluded that the organizational model of Brazilian oil industry is a result of the dispute by the forces involved in the appropriation of oil rents.
55

Effectiveness of the project management profession in the Ugandan oil industry : performance, benefits and challenges

Kiggundu, Kamulegeya John January 2014 (has links)
Oil is one of the most valuable resources. For a country like Uganda, which is one of the least developed countries in the world with more than one third of the population still living below the poverty line; the discovery of this valuable resource has the capacity to radically alter the economy of the country. But on the other hand, oil exploration, mining and refining are complex, costly, long duration projects with many challenges that require sophisticated financial management, planning, scheduling and cost control. The project management profession is charged as a single point of responsibility for initiating, planning, executing, monitoring and controlling projects in order to meet stakeholder’s needs and expectations. The research objectives were: 1. To identify and examine the challenges and risks associated with the oil industry in Uganda. 2. To investigate the effectiveness of project management practices in the Ugandan oil industry in terms 1 above. 3. Identify how project success can be measured in the Ugandan oil industry. A case study was the research technique adopted and interviews were conducted with the major stakeholders in the Ugandan oil industry. The research findings reveal the challenges and risks that continue to plague the Ugandan oil industry and the role of project management in the exploration phase of the project. The research findings were used to evaluate the role, responsibility and service that project management professionals are expected to render and the actual role, responsibility and service that the professionals have been rendering to the stakeholders in the Ugandan oil industry. The research then concludes by proposing ways of improving the chances of project success in the Ugandan oil industry.
56

A statistical technique for two-phase flow metering

Darwich, Tarek D. A. January 1989 (has links)
No description available.
57

Rekonstrukce státu v Iráku / Reconstruction of Iraq

Strnadová, Tereza January 2009 (has links)
The objective of this thesis is to find out an answer for question why the reconstruction of Iraq is unsuccessful. There are mentioned previous regimes as initial conditions for the process. Firstly thesis concerns with democratization of Iraq, which is the main sense of reconstruction. Its pitfalls and whether it can be applied in Iraq. Secondly it describes barriers of reconstruction. Thirdly it points out mistakes which were made during the reconstruction. Findings answer the main question. Thesis concludes some recommendation which can lead to success of this process.
58

Desenvolvimento de tecnologia de destilação molecular reativa = projeto e construção da unidade / Development of reactive molecular distillation technology : design and construction of the unit

Winter, Alessandra 18 August 2018 (has links)
Orientadores: Maria Regina Wolf Maciel, Cesar Benedito Batistella. / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química / Made available in DSpace on 2018-08-18T15:27:51Z (GMT). No. of bitstreams: 1 Winter_Alessandra_D.pdf: 11332539 bytes, checksum: bb04863e95794099cc169cda9cc99199 (MD5) Previous issue date: 2011 / Resumo: Atualmente, muitas empresas têm adotado a intensificação de processos, criando técnicas e métodos inovadores, visando aumentar a eficiência energética e o rendimento dos processos. A destilação reativa é um exemplo clássico de processo intensificado. Este trabalho apresenta o desenvolvimento de uma unidade de Destilação Molecular Reativa (REAMOL). O objetivo do processo de destilação molecular reativa é a valoração (upgrade) do petróleo, por meio da geração de uma corrente de hidrocarbonetos leves (diluentes) que possa ser injetada dentro do poço, inclusive em ambientes de mar (offshore), diminuindo a viscosidade do óleo cru e favorecendo as propriedades de transporte e escoamento. Este processo promove o craqueamento de parte dos compostos presentes no petróleo, convertendo-os em compostos mais leves. A característica fundamental do REAMOL é a separação imediata dos produtos leves gerados pelas reações de conversão dos componentes originais, favorecendo, assim, o deslocamento do equilíbrio no sentido das reações desejadas. Tais reações ocorrem na forma heterogênea, misturando-se o catalisador sólido à carga de petróleo (líquido). A ação da força centrífuga aplicada ao evaporador, formado por um disco giratório, é responsável pelo espalhamento da amostra na forma de um filme fino (película), garantindo intensa troca térmica, o que também promove a reação. O curto tempo de residência do material no equipamento, aliado às baixas pressões, favorecem as reações de craqueamento, direcionando a formação dos produtos desejados de menor viscosidade. Após a construção, o equipamento foi totalmente automatizado para facilitar os trabalhos na planta, proporcionando uma menor intervenção por parte do operador no processo. Os testes foram iniciados com óleos lubrificantes para avaliar o funcionamento e o sistema de supervisão e controle da planta. Em seguida, foi adicionado catalisador ao óleo lubrificante com o intuito de verificar as condições operacionais do equipamento. Observou-se um aumento significativo da pressão de operação do sistema, que se atribuiu à formação de compostos leves que influenciam no sistema de vácuo do processo. A partir desta constatação, iniciaram-se os experimentos com um corte e um resíduo de petróleo com diferentes concentrações de catalisador. As caracterizações físico-químicas das amostras demonstram que a melhor condição operacional para obtenção de compostos mais leves ocorre à temperatura do evaporador de 200ºC e 3% de catalisador. O último teste foi realizado nas melhores condições de processamento utilizando-se diferentes tipos de catalisadores. Os resultados obtidos no equipamento construído foram extremamente positivos, comprovando o sucesso da tecnologia proposta / Abstract: Currently, many companies have been adopted process intensification, creating innovative techniques and methods increasing the energy efficiency and the yield of the processes. The reactive distillation is a classic example of intensified process. This work presents the development of a Reactive Molecular Distillation Unit (REAMOL). The objective of reactive molecular distillation process is the oil upgrade by generating a stream of light hydrocarbons that can be injected into the well, including environments offshore, decreasing the viscosity of crude oil and improving the flow and transport properties. This process promotes the cracking of some petroleum components converting them into lighter compounds. The feature of REAMOL is the immediate separation of the light products generated by the reactions of conversion of the original components, moving the equilibrium in the direction of desired reactions. These reactions occur in a heterogeneous way by mixing the solid catalyst to the oil feed (liquid). The centrifugal force applied in the evaporator, consisting of a conical rotor, is responsible for spreading the sample in the form of a thin film, guarantying intense heat exchange, which also promotes the reaction. The short residence time of material in the equipment coupled with low pressures promotes the cracking reactions by directing the formation of the desired products with lower viscosity. After the equipment construction, it was completely automatized to make easy the operating performance, decreasing the operator intervention in the process. Firstly, the experiments were carried out using lubricating oil to evaluate the performance and the plant control. Then, the catalyst was added to the lubricating oil in order to verify the operating conditions of the equipment. There was a significant increase in the operating pressure of the system, which was attributed to the formation of light compounds that affect the vacuum system of the process. From this verification, experiments were initiated with a cut and a petroleum residue with different concentrations of catalyst. The physicochemical characterizations of the samples show that the best operating condition for obtaining lighter compounds occurs at the evaporator temperature of 200 ° C and 3% catalyst. At least, it was carried out a test under the best conditions for processing using different kind of catalysts. The experiment results were extremely positive proving the success of the proposed technology / Doutorado / Desenvolvimento de Processos Químicos / Doutor em Engenharia Química
59

Accounting Measurement Bias and Executive Compensation Systems

Boone, Jeffery Paul 12 1900 (has links)
This dissertation presents empirical evidence intended to help answer two research questions. The first question asks whether executive compensation systems appear to exploit the bias in accounting-based performance measures in order to reduce the volatility in executive compensation and to allocate incentives more effectively across the range of activities performed by the executive. The second question asks whether compensation systems systematically differ between firms that use alternative accounting methods and whether any such systematic difference helps explain accounting choice. Parameters estimated in fixed-effects endogenous switching regression models were used to test the risk-shielding and incentive-allocation hypotheses. The models were estimated across a dataset consisting of 1151 executive-year observations of annual compensation paid to 222 top-level executives in 40 oil and gas firms. The dataset was partitioned by accounting method and separate models estimated for the full cost and successful efforts partitions. The tests provided modest support for the risk-shielding and incentive-allocation hypotheses, revealing that accounting measurement bias is used to focus incentives for effort in the exploration activity and to reduce executives' exposure to production risk. The design also allowed an estimate of the proportional change in compensation that was realized from the accounting choice actually made.
60

Climate Change and the Oil Industry in Nigeria: Policy and Action Imperatives for Sustainability

Emeseh, Engobo January 2017 (has links)
No

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