![]() Example problems in aircraft conceptual design illustrate the approach. For models that are computationally costly to evaluate, a surrogate modeling approach based on high dimensional model representation achieves efficient computation of the sensitivities. A sensitivity-based method analyzes the effects of design decisions on satisfying those budgets, and a multiobjective optimization formulation permits the designer to explore the tradespace of uncertainty reduction activities while also accounting for a cost budget. This thesis presents an approach to defining budgets on the acceptable levels of uncertainty in design quantities of interest, such as the allowable risk in not meeting a critical design constraint and the allowable deviation in a system performance metric. ![]() Quantification and management of uncertainty are critical in the design of engineering systems, especially in the early stages of conceptual design. Includes bibliographical references (pages 107-112). ![]() The certified thesis is available in the Institute Archives and Special Collections.Ĭataloged from student-submitted PDF version of thesis. This electronic version was submitted by the student author. Thesis: S.M., Massachusetts Institute of Technology, Department of Aeronautics and Astronautics, 2016. Further research in a South African context would prove very interesting on the unique budgeting processes implemented by South African companies today.ĭissertation (MCom)-University of Pretoria, 2012. Alternative methods of planning used by the company in conjunction to the traditional budget were identified and discussed. Disadvantages and advantages of the budgeting process were discussed as found form previous research and from the current study. It includes various alternative planning methods used in conjunction with the annual budgeting process. It was concluded that the budgeting process is unique for this South African company. Data was collected by means of questionnaires that were given to all participants of the budgeting process and a once off face-to-face in-depth interview with the CFO of the company. For this mixed-method study, one single case was selected for an in-depth analysis of the budgeting process. The study will also make a unique contribution by investigating new combinations of planning techniques used by a South African company. As far as it could be determined, this will be the first study of the implementation of alternative budgeting in conjunction with the traditional budget in a South African context. Unlike previous studies that only focussed on abandoning budgets completely or on alternative methods, this study will investigate the use of the traditional budget in conjunction with alternative planning and the extent of alternative planning methods being used. This study should contribute greatly to how unique the budgeting process has become in the modern economy. Finally, to determine the relevance of traditional budgeting when combined with alternative planning methods for a South African company. To determine how key performance drivers for planning purposes are chosen in the event that the company makes use of key performance drivers. To determine whether a South African company combines different planning methods to suit its specific planning needs. To identify the advantages and disadvantages of the budgeting process. The purpose of this study is to determine alternative ways of controlling costs that are more reliable, updated and useful than traditional budgeting. ![]()
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