Thesis (Ph. D.)--University of Washington, 2008. / Vita. Includes bibliographical references (p. 73-78).

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 62). Also available in electronic version.

Thesis (Ph. D.)--University of Chicago, Dept. of Statistics, August 2003. / Includes bibliographical references. Also available on the Internet.

The relational data model uses set theory to provide a formal background, thus ensuring a rigorous mathematical data model with support for manipulation. Newer generation database models are based on the object-oriented paradigm, and so fall short of having such a formal background, especially in some of the more complex data manipulation areas. We use category theory to provide a formalism for object databases, in particular the object-relational model. Our model is known as the Product Model. This thesis will describe our formal model for the key aspects of object databases. In particular, we will examine how the Product Model deals with three of the most important problems inherent in object databases, those of queries, closure and views. As well as this, we investigate the more common database concepts, such as keys, relationships and aggregation. We will illustrate the feasibility of this model, by producing a prototype implementation using PIFDM. PIFDM is a semantic data model database system based on the functional model of Shipman, with object-oriented extensions.

No description available.

Though knowledge has become an increasingly important resource for modern businesses, it was not until the mid-1990's that the 'knowledge management' research stream emerged in the business and information systems literature. Initial research on how to manage knowledge came from an objectivist epistemology of knowledge that viewed it as something that was capable of captured, stored and transferred via information to increase organisational efficiency. This study is grounded in a more recent and alternative perspective that takes a practice based epistemology seeing knowledge as embedded in and inseparable from practice. The practices of interest relate to how knowledge work is performed in environments where there is heavy reliance on information systems. Using an interpretive case study this research analyses the practices of a product support centre of a US multinational. Data was collected through semi-structured interviews and internal documentation, including access to the firms „knowledge management‟ repository. Two central practices were examined: how product support engineers made sense of problems to develop fix procedures and how these were subsequently documented. Even within a work environment where client fixes were verifiable, suggesting an objectivist epistemology, this research found that the practice based perspective could be used to provide a different perspective and develop alternative and useful insights. The study contributes to the practice based perspective on knowledge management by providing an analysis of context specific knowledge work practices by analysing how even in procedural repetitive work agency can be exhibited as actors enact practices. It also helps develop the application of Structuration Theory by aiding an understanding of how meanings, norms and resources are developed, drawn upon, conflict, and are changed as everyday work is accomplished. The study is of relevance by providing an understanding of informal knowledge work practices rather than their formal description.

In the post-war period, Italy has been plagued by different forms of organised crime (such as the Sicilian Mafia, the Neapolitan Camorra, the Calabrian 'Ndrangheta and the Pugliese Sacra Corona Unita) which have managed in their individual ways to infiltrate both the State (in the form of political parties and local administrations) and society (businesses, cultural and voluntary organisations). In Campania, until 1991, the relationship between the Camorra and the local political elite (based on the exchange of votes for state contracts and protection) was tacitly accepted by the population and could not be studied by political scientists due to the lack of reliable source material. In 1991, a law was introduced which gave generous remission of sentences to criminals who became state-witness. Many members of the Camorra revealed important aspects of criminal, economic and political activities in Campania. This new material permitted a reexamination of the Camorra. This thesis on the Camorra hopes to fill a gap in the study of the relationship between politics and criminal organisations which so far has concentrated on the Sicilian Mafia. Part One is a general introduction and presents the theoretical model and methods adopted. The documentation available allowed us to adopt an agency-structure approach derived from Giddens's structuration theory (1984). This was complemented by Easton's systems analysis (1965) to understand the wider, macro-environment. We elaborated an 'interaction model' to analyse the changing nature of the Camorra's activities: from a simple social-criminal practice in the 1930s to a dynamic and secret cartel enacting a political-criminal practice in the 1980s. To test this model we applied it to case-studies of criminals using original judicial documents. In Part Two we look at the possible motives of people who join the Camorra. We analysed the agent's internal and external structure in both decades and concluded that the macro-environment as an influencing factor had changed more than the individual-agent. Part Three examines the lives of camorristi in the 1950s and 1980s in order to determine how far their criminal practice has been transformed. Part Four investigates the wider picture of system-interaction between the Camorra's social subsystem and the political system. Focussing on the relationship between camorristi and the political elite in the 1950s and 1980s we highlight the radical changes that occurred. This thesis presents a theoretical discussion of how to study organised crime and social behaviour in general and at the same time a detailed empirical study, in particular of the political role of a criminal organisation in a concrete historical situation, that of Naples over the last forty years.

Thesis (M.S.)--Ohio University, November, 2001. / Title from PDF t.p.

Thesis (Ph. D.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 109-114). Also available via the Internet.

No description available.