• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4
  • 4
  • Tagged with
  • 9
  • 9
  • 6
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 3
  • 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.
1

A probabilistic technique for the assessment of complex dynamic system resilience

Balchanos, Michael Gregory 24 April 2012 (has links)
In the presence of operational uncertainty, one of the greatest challenges in systems engineering is to ensure system effectiveness, mission capability and survivability. Safety management is shifting from passive, reactive and diagnosis-based approaches to autonomous architectures that will manage safety and survivability through active, proactive and prognosis-based solutions. Resilience engineering is an emerging discipline, with alternative recommendations on safer and more survivable system architectures. A resilient system can "absorb" the impact of change due to unexpected disturbances, while it "adapts" to change, in order to maintain its physical integrity and mission capability. A framework of proposed resilience estimations is the basis for a scenario-based assessment technique, driven by modeling and simulation-based (M&S) analysis, for obtaining system performance, health monitoring, damage propagation and overall mission capability responses. For the technique development and testing, a small-scale canonical problem has been formulated, involving a reconfigurable spring-mass-damper system, in a multi-spring configuration. Operational uncertainty is introduced through disturbance factors, such as external forces with varying magnitude, input frequency, event duration and occurrence time. Case studies with varying levels of damping and alternative reconfiguration strategies return the effects of operational uncertainty on system performance, mission capability, and survivability, as well as on the "restore", "absorb", and "adapt" resilience capacities. The Topological Investigation for Resilient and Effective Systems, through Increased Architecture Survivability (TIRESIAS) technique is demonstrated for a reduced scale, reconfigurable naval cooling network application. With uncertainty effects modeled through network leak combinations, TIRESIAS provides insight on leak effects to survival times, mission capability degradations, and on resilience function capacities, for the baseline configuration. Comparative case studies were conducted for different architecture configurations, which have been generated for different total number of control valves and valve locations on the topology.
2

Modeling And Assessment Of Theeffectiveness Of Government Information Systems

Guclu, Aydin Nusret 01 June 2011 (has links) (PDF)
In the context of evaluating effectiveness of information systems, the public sector requires a specific approach for measuring indirect benefits such as strategic / political value. There is not yet a holistic approach and no unified adaptive and time-variant model addressing the problem. In this thesis, Strategic Management Model developed and partially applied at the Ministry of Finance, Turkey, is described. The model is based on the public value delivery chain, from strategic goals to accountability reporting. Public Financial Management Value Space is built step by step, and a method is defined on the Value Space for effectiveness assessment through calculation of five value components, namely the Agency Value, User Value, Political Value, Strategic/Social Value, and Environmental Value, using weighted summation of key goal and performance indicators. Value space is mapped to ontology, then to the object model for flexible system implementation. The assessment calculation method, resulting in a single value allows for a-posteriori benefits assessment, allows not only for cross-comparison of programs, agencies, functions, etc. by fixing the values on the dimensions of the value space under analysis, but also standardization and consolidation. Economy, efficiency and effectiveness are linked as an extension of the assessment model by introducing the expenditure component of the budget. The model has been applied to two case studies of Information System investments at the Ministry of Finance, and a cross-comparison of these initiatives has been provided.
3

Efektivnost veřejného zdravotnictví v ČR a vliv zavedení poplatků / Effectiveness of public health system and impact of introduction of regulatory payments

Pleva, Michal January 2010 (has links)
This diploma thesis aims to describe Czech health care system participants` motivations and impact and meaningfulness of setting up regulatory payments on supply of health care. It also attempts to suggest other meanings to rising effectiveness of whole system. This work is based on theoretical concepts of various health care systems and endeavours to expose their positive and also negative features. The theory of health care markets comes out from works of Stiglitz (1997) and Arrow (1963). They focused rather on US, but this thesis aims to use this knowledge also in conditions of Czech Republic. Thesis sum up expenditures on health care during the time in Czech Republic, compare with expenditures abroad and estimate their trend in future. The central point of this paper is the analysis of the introduction of regulatory payments and its influence on concrete types of health services and on the consumption of drugs. It includes also a short survey.
4

Posouzení informačního systému firmy a návrh změn / Information System Assessment and Proposal for ICT Modification

Martincová, Petra January 2012 (has links)
This master´s thesis contains an explanation of basic terms and principals used in an issues of information systems. Part of this thesis are analyses of a current state of an information system in a selected company and evaluation of its effectiveness. A set of improvement propositions of the current state was created based on those analyses with both balance and effectiveness of an IS taken into account.
5

Posouzení informačního systému firmy a návrh změn / Information System Assessment and Proposal for ICT Modification

Lavický, Jindřich January 2013 (has links)
This master´s thesis contains an explanation of basic terms and principals used in an issue of information systems. Part of this master´s thesis is analyses of a current state of an information system in a selected company and evaluation of its effectiveness. A set of improvement propositions of the current state was created based on those analyses with both balance and effectiveness of an IS taken into account.
6

Problematika hodnocení optimality a vyváženosti podnikových IS / Aspects of Optimality and Balance Evaluation of Corporate IS

Neuwirth, Bernard January 2009 (has links)
This doctoral thesis deals with the aspects of evaluation of balance and optimality of corporate information systems. The initiative for this specialization was given by the increasing importance that is being laid on the perception of information systems from the point of view of a business company. More and more resources are being invested in the domain of information systems, but afterwards, it is not always ascertained that the information system is such a system, one could characterize as balanced and optimal for the company today as well as in the future. Often this is because there does not exist for the company an available and easily applicable methodic how to evaluate the system. As one of the main starting points of this doctoral thesis I have chosen the methodic HOS8 that was published 5 years ago on our faculty. The newly proposed methodic HOS2009 is trying to clear up the weak points of the original HOS8 methodic that were discovered during its practical use. This is done mainly by using the information feedback from the applicants of the methodic. Within the scope of this thesis the factors influencing the level of the particular areas of the system and the influence of these areas on its general balance are being examined. With regard to the evaluation of the balance and optimality of the information system, in this thesis the problematic of determination of a balanced and optimal state of information system for a company nowadays as well in the future are being examined. As a part of the methods output the thesis presents also charts representing the general state of the system, the imbalance of the particular parts of the IS and the relationship between the areas of hardware and software. Based on the evaluation of the current state and its comparison to the balanced optimal state for the present day as well for the future, the new possible directions and strategies of further development of the IS in the company are being proposed. I see the best exploitation of the methodic HOS2009 in the company in the support of managerial decisions with impact on: the discovery of potentially problems within the scope of IS of the company, the design of a possible course of development useful for their solution, but also the usage of the methodic as a simple control mechanism.
7

Why Do People Bribe and is it Worth it? A Mixed Methods Study of Bribing Antecedents and Outcomes in Former Soviet Countries

Greppin, Carl H. 29 May 2020 (has links)
No description available.
8

On quantifying miltary strategy.

Engelbrecht, Gerhard Nieuwoudt 30 June 2003 (has links)
Military Strategy is defined as a plan at the military strategic level of war that consists of a set of military strategic ends, ways and means and the relationships between them. This definition leads to the following research questions: 1. How can the extent of the many-to-many relationships that exist between a military strategy, its ends, ways and means be quantified? 2. If the relationships between a military strategy, its ends, ways and means are quantified and if the effectiveness of the force design elements is known, how shall that enable the quantification of the state’s ability to execute its military strategy? 3. If the relationships between a military strategy, its ends, ways and means are quantified and if the effectiveness of the force design elements is known, how will it aid decision-making about the acquisition of the future force design? The first research question is answered by mapping a military strategy complete with its ends, ways and means to a ranked tree where the entities in the strategy corresponds with the vertices of different rank in the tree. The tree representation is used to define and determine the contribution of entities in a military strategy to entities at the next higher level. It is explained how analytical, heuristic and judgement methods can be employed to find the relative and real contribution values. Also, a military strategy for South Africa is developed to demonstrate the concept. The second research question is answered by developing measures of effectiveness taking the interdependence of entities at the terminal vertices of the ranked tree into account. Thereafter, the degree to which the force design would support the higher order entities inclusive of a military strategy could be calculated. The third research question is answered by developing a cost-benefit analysis method and a distance indicator from an optimal point to aid in deciding between supplier options for acquisition. Thereafter the knapsack problem is amended to allow for scheduling acquisition projects whilst optimising the force design's support of a military strategy. Finally, the model is validated and put into a contextual framework for use in the military. / Quantitative management / D.Phil.
9

On quantifying miltary strategy.

Engelbrecht, Gerhard Nieuwoudt 30 June 2003 (has links)
Military Strategy is defined as a plan at the military strategic level of war that consists of a set of military strategic ends, ways and means and the relationships between them. This definition leads to the following research questions: 1. How can the extent of the many-to-many relationships that exist between a military strategy, its ends, ways and means be quantified? 2. If the relationships between a military strategy, its ends, ways and means are quantified and if the effectiveness of the force design elements is known, how shall that enable the quantification of the state’s ability to execute its military strategy? 3. If the relationships between a military strategy, its ends, ways and means are quantified and if the effectiveness of the force design elements is known, how will it aid decision-making about the acquisition of the future force design? The first research question is answered by mapping a military strategy complete with its ends, ways and means to a ranked tree where the entities in the strategy corresponds with the vertices of different rank in the tree. The tree representation is used to define and determine the contribution of entities in a military strategy to entities at the next higher level. It is explained how analytical, heuristic and judgement methods can be employed to find the relative and real contribution values. Also, a military strategy for South Africa is developed to demonstrate the concept. The second research question is answered by developing measures of effectiveness taking the interdependence of entities at the terminal vertices of the ranked tree into account. Thereafter, the degree to which the force design would support the higher order entities inclusive of a military strategy could be calculated. The third research question is answered by developing a cost-benefit analysis method and a distance indicator from an optimal point to aid in deciding between supplier options for acquisition. Thereafter the knapsack problem is amended to allow for scheduling acquisition projects whilst optimising the force design's support of a military strategy. Finally, the model is validated and put into a contextual framework for use in the military. / Operations Management / D.Phil.

Page generated in 0.0841 seconds