Abstract The existing Fisher’s exact test has been widely applied for investigating whether the difference between observed frequencies is significant or not. can be only when are in determinate form and no vogues information. In practice, due to complicity production process, it not always possible have form. Therefore, use of may mislead industrial engineers. paper presents modification using...

Applied researchers often use tests based on contingency tables in preliminary data analysis and diagnostic testing. We show that many of such tests may be alternatively implemented by testing for coefficient restrictions in linear regression systems (as a rule, employing the Wald test). This unifies the theories of regression analysis and contingency tables, sheds more light on intuitive conte...

Modern power grids are continuously monitored by trained system operators equipped with sophisticated monitoring and control systems. Despite such precautionary measures, large blackouts, that affect more than a million consumers, occur quite frequently. To prevent such blackouts, it is important to perform high-order contingency analysis in real time. However, contingency analysis is computati...

Steady state contingency analysis aims at the assessment of the risk certain contingencies may pose to an electrical network. This is a particularly important task of network operators, especially as network stability issues become of prime importance in the current era of electricity deregulation. The article focuses on the analysis of experimental data that are produced through operating poin...

This paper proposes the use of responsibility modelling as a tool to support the process of contingency planning for civil emergencies. Existing contingency planning techniques produce documents which are difficult to analyse for vulnerabilities, particularly across organisational boundaries and are likely to be largely unused during an actual emergency. This paper presents a new approach to co...