The techniques currently used to model risk and manage the safety of the UK railway network are not aligned to the mechanism by which catastrophic accidents occur in this industry. In this thesis, a new risk modelling method is proposed to resolve this problem. Catastrophic accidents can occur as the result of multiple failures occurring to all of the various defences put in place to prevent them. The UK railway industry is prone to this mechanism of accident occurrence, as many different technical, operational and organizational defences are used to prevent accidents. The railway network exists over a wide geographic area, with similar accidents possible at many different locations. The risk from these accidents is extremely variable and depends on the underlying conditions at each particular location, such as the state of assets or the speed of trains. When unfavourable conditions coincide the probability of multiple failures of planned defences increases and a 'risk hotspot' arises. Ideal requirements for modelling risk are proposed, taking account of the need to manage multiple defences of conceptually different type and the existence of risk hotspots. The requirements are not met by current risk modelling techniques although some of the requirements have been addressed experimentally, and in other industries and countries. It is proposed to meet these requirements using Bayesian Networks to supplement and extend fault and event tree analysis, the traditional techniques used for risk modelling in the UK railway industry. Application of the method is demonstrated using a case study: the building of a model of derailment risk on the UK railway network. The proposed method provides a means of better integrating industry wide analysis and risk modelling with the safety management tasks and safety related decisions that are undertaken by safety managers in the industry.

Magistro darbe yra suformuluota problema – ar viešbučiuose funkcionuojančios organizacinės valdymo struktūros atitinka teorinius modelius, išanalizuoti ir susisteminti įvairių Lietuvos ir užsienio autorių teoriniai organizacinių valdymo struktūrų modeliai. Praktinėje dalyje pateikiamos Šiaulių viešbučių esamos organizacinės valdymo struktūros, jos išsamiai išanalizuotos, bei pateikti pasiūlimai esamai situacijai pagerinti. Tema pasirinkta, nes Lietuvai įstojus į Europos sąjungą vis svarbesnis vaidmuo yra jos reprezentacinė išvaizda. Užsienio rinkų pritraukimas skatina šalies ekonomikos augimą, naujų darbo vietų kūrimą bei turizmo konkurencingumą. Tinkamas turizmo plėtros problemų identifikavimas ir efektyvūs sprendimo būdai susiję su apgyvendinimo bazės kūrimu ir plėtojimu. Mokslinėje literatūroje gausu publikacijų apie gamybinių įmonių organizacines valdymo struktūras. Tačiau to paties pasakyti apie paslaugų sferos įmones, tiksliau apie viešbučius – negalime. Todėl iškyla prieš tai minėta mokslinė problema. / In master work there is formulated the problem – do functioning organizational frameworks of government in hotels meet theoretical patterns. There are analyzed and systematized patterns of frameworks of government of various Lithuanian and foreign authors. In practical part there are laid existing organizational frameworks of government of Siauliai hotels, they are analyzed in depth and suggestions to better an existing situation are laid. Such theme is chosen, because since Lithuania entered EU, the more important role is its representative outside. In draft of foreign market promotes economic growth of Lithuania, establishment of new workplaces and competitive ability of tourism. An appropriate identification of the problems of tourism development and effective ways of solutions are associated with establishment and development of settlement base. In scientific literature there are publications about organizational frameworks of government of industrial companies. However, we can’t declare the same about companies of services. Thus, mentioned scientific problem appears.

Thesis (Ph.D.) - Carleton University, 2002. / Includes bibliographical references (p. 134-148). Also available in electronic format on the Internet.

The thesis compares internal communication and organizational structure of arts organizations with general theoretical knowledge from economy theory. In the first part, the thesis presents an enquiry in the field of internal communication and structure of organizations and puts it into the context on a theoretical level. It concerns outlined historical development and types of organizational structures and communication flows. The second part addresses the application of theoretical knowledge in the area of culture. Furthermore, it analyses two particular arts organizations, inquiring especially into the nature of internal communication flows and development of organizational structure. Subsequently, it confronts the results with theoretical basis presented in the first chapter. Apart from other conclusions, it reveals several flaws and suggests possible solutions for necessary corrections.