Thesis (M.Eng. (Development and Management Engineering)--North-West University, Potchefstroom Campus, 2008.

Today, a large proportion of the world's plenteous offshore natural gas resource are stranded, flared or re-injected due to constraints pertaining to its utilisation. The major constraint in the utilisation of this resource is linked to its properties, which makes it difficult to transport or store. Although the resource presents an excellent opportunity for the Gas-to-Liquid (GTL) technology (process for converting natural gas into high energy liquid fuels with qualities that surpass the most stringent current and future clean-fuel requirements), the further processing of this resource is still impeded by high cost of transportation. However, it is believed that the emerging Floating GTL concept could offer superb opportunities to bring such offshore stranded natural gas reserves to markets by converting the gas into high quality liquid fuels, at the production sites, before it is transported using conventional oil tankers or vessels. But the question is: can this venture be profitable or economically viable? In response, an Economic Model (the EV Model) to review the economic viability of the Floating GTL option was developed. Analyses on technical and economical aspects of the floating GTL application offshore are presented with case studies on Syntroleum's and Statoil's floating GTL designs. Profitability analyses were conducted using the EV model to evaluate economic parameters such as Net Present Value (NPV), Internal Rate of Return (IRR), Discounted PayBack Period (DPBP), Profitability index (PI), Break-Even Analysis (BEA) and Scale Economies for some assumed case scenarios involving both designs. In addition, sensitivity analyses were also carried out to find the most sensitive parameters which affect the viability of the floating GTL option. The economic analyses revealed that, a modest feedstock cost (~0 - $3/MSCF), high crude oil price (that stays above $30 per barrel) and reduction trend in capital expenditure (for stand alone Floating GTL plant) up to $20,00O/BPD or lower in the next few years, will open windows for the floating GTL concept. Finally, the energy policy needed to achieve the capitalisation of the plenteous offshore stranded gas resource via floating GTL is also discussed. / Thesis (M.Ing. (Development and Management))--North-West University, Potchefstroom Campus, 2007.

Thesis (M.Eng. (Development and Management Engineering)--North-West University, Potchefstroom Campus, 2008.

Thesis (M.Eng. (Development and Management Engineering)--North-West University, Potchefstroom Campus, 2008.

This thesis deals with the issue of investment decisions, which is important for every business. The aim of this thesis was to evaluate the effectiveness of selected investment project.First, we conducted a financial analysis to assess the current status of the company. Then we have identified the revenue and expenditure of the project. We also have assessed the effectiveness of investments in several variants. At the conclusion of the project was assessed risk.

Doctorat en sciences sociales, politiques et économiques / info:eu-repo/semantics/nonPublished

Orientador: Bianca Morelli Rodolfo Calsavara / Dissertação (mestrado profissional) - Universidade Estadual de Campinas, Instituto de Matemática, Estatística e Computação Científica / Made available in DSpace on 2018-08-26T15:10:31Z (GMT). No. of bitstreams: 1 SalesFilho_Nazime_M.pdf: 36937949 bytes, checksum: 4ceff2992bbc8648a89104715aac602e (MD5) Previous issue date: 2015 / Resumo: Neste trabalho será analisado um modelo matemático que descreve a propagação da dengue. Tal modelo é dado por um sistema de equações diferenciais ordinárias não lineares sujeitas a condições iniciais, que descreve duas populações: a de mosquitos e a humana. A população de mosquitos é dividida em duas subpopulações: fase aquática, incluindo os ovos, larvas e pupas, e fase alada, que é subdividida em mosquitos suscetíveis e infectados. A população humana é dividida em subpopulações de suscetíveis, infectados e removidos. No modelo citado é assumido que a população de mosquito e a população humana atingiram homogeneidade espacial, isto é, não há movimentação destas populações influenciando na disseminação da doença. O principal interesse neste trabalho é analisar qualitativamente o comportamento das populações em torno dos pontos de equilíbrio do sistema. Para este fim, além do uso de ferramentas analíticas também foram realizadas simulações numéricas utilizando o software Maple. Dessa forma foi possível obter informações sobre a disseminação da dengue, sob algumas hipóteses, mesmo sem obtermos solução explícita do sistema / Abstract: In this work it will be analyzed a mathematical model describing propagation of dengue disease. This model is given by a system of nonlinear ordinary differential equations, subjected to initial conditions, involving two populations: one of mosquitos and another of humans. The mosquitos population is divided in two subpopulations: the aquatic phase, including eggs, larvae and pupae, and the winged phase, that is divided in susceptible and infected mosquitos. The human population is divided in subpopulations of susceptible, infected and removed. In the cited model it is assumed that the mosquito and human populations achieved spatial homogeneity, i.e., there is no movement of these populations affecting the disease dissemination. The main interest of this work is to analyze qualitatively the populations behavior around the equilibrium points of the system. To this end, in addition to the use of analytical tools, numerical simulations were performed by using Maple software. In this way, it was possible to obtain information about dengue dissemination, under some hypotheses, even without obtaining explicit solution for the system / Mestrado / Matematica Aplicada e Computacional / Mestre em Matemática Aplicada e Computacional

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This book focuses on an evaluation of technical, economical, and personal aspects of e-learning deployment in a theoretical plane and in the specific environment of the bank ČSOB, a. s. The thesis begins by an introduction of the term e-learning and a brief description of main properties and characteristics of this new trend in a field of not only corporate education. Special attention is devoted to an assessment of business benefits and cots of education; every aspect is analyzed and compared both for the classical brick and mortar classroom instructor led education and for the e-learning. The thesis introduces two mathematical models for assessing an effectiveness of e-learning deployment. Theoretical concepts are applied to data from a real course which was run in one of the main Czech banks ČSOB, a. s. Last part briefly examines the concepts and benefits of SCORM standard package and its support in the SAP LS 600 system.