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Showing result 1 - 5 of 9 swedish dissertations matching the above criteria.

2. 1. Analysis of enterprise IT service availability : Enterprise architecture modeling for assessment, prediction, and decision-making

   Author : Ulrik Franke; Pontus Johnson; Lars Nordström; Göran Ericsson; João Paulo A. Almeida; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Service Level Agreement; outage costs; Enterprise Architecture; enterprise IT service availability; decision-making; metamodeling; Enterprise Architecture analysis; Bayesian networks; fault trees; Predictive Probabilistic Architecture Modeling Framework; Service Level Agreement; nertidskostnader; Enterprise Architecture; tillgänglighet hos IT-tjänster; beslutsfattande; metamodellering; arkitekturanalys; bayesianska nätverk; felträd; Predictive Probabilistic Architecture Modeling Framework;

   Abstract : Information technology has become increasingly important to individuals and organizations alike. Not only does IT allow us to do what we always did faster and more effectively, but it also allows us to do new things, organize ourselves differently, and work in ways previously unimaginable. READ MORE

4. 2. Risk-based methods for reliability investments in electric power distribution systems

   Author : Karin Alvehag; Lennart Söder; Kjølle Gerd; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Distribution system reliability; risk management; quality regulation design; customer interruption costs; weather modeling; Monte Carlo simulations; Electric power engineering; Elkraftteknik;

   Abstract : Society relies more and more on a continuous supply of electricity. However, while underinvestments in reliability lead to an unacceptable number of power interruptions, overinvestments result in too high costs for society. READ MORE

5. 3. Essays on the Infestation of Lake Victoria by the Water Hyacinth

   Author : Eseza Kateregga; Göteborgs universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Water hyacinth; water hyacinth indicators; water hyacinth induced catchability coefficients; intrinsic growth rates for stocks; carrying capacity; elasticity of catch with respect to fishing effort; electricity outage costs.;

   Abstract : This thesis consists of four essays that seek to estimate the abundance of the water hyacinth in Lake Victoria during the 1990s and analyse its effects on the catchability of fish, estimate the elasticities of catch with respect to the various components of effort in lake Victoria fisheries, and estimate the welfare costs of electricity outages. In the first essay, data on the extent of water hyacinth mat coverage collected from a number of reports and surveys is used to fit time trend water hyacinth mats growth curves for the three sections of Lake Victoria. READ MORE

6. 4. Impact of dependencies in risk assessments of power distribution systems

   Author : Karin Alvehag; Lennart Söder; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Elektroteknik;

   Abstract :  Society has become increasingly dependent on electricity, so power system reliability is of crucial importance. However, while underinvestment leads to an unacceptable number of power outages, overinvestment will result in costs that are too high for society. The challenge is to find a socioeconomically adequate level of risk. READ MORE

7. 5. Optimisation and Incentive Mechanisms for Robust Generation Dispatch and Capacity Investment in Electricity Markets

   Author : Lamia Varawala; György Dán; Mohammad Reza Hesamzadeh; José Manuel Arroyo; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optimal power flow; Look-ahead; $N-k$ contingency criterion; Renewable energy; Environmental externalities; Electricity generation capacity; Strategic behaviour; Incentives;

   Abstract : Power systems constitute a large-scale critical infrastructure and therefore, it is crucial that their operation be robust to deviations from normal functioning of its independent components. Furthermore, due to their large size, any inefficiencies in electricity market design can be very costly and therefore, must be optimised. READ MORE