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Current trends indicate that the prevalence of ontologies will continue to increase within many domains. They are already commonly used to define controlled medical terminologies and form the backbone of the Semantic Web initiative. Very few tools that support versioning of ontologies are currently available, and those that provide difference detection and visualization are particularly lacking. We have implemented a tool called PROMPT-Viz that provides advanced visualizations using treemaps to help understand the location, impact, type and extent of changes that have occurred between versions on an ontology. PROMPT-Viz runs as a plug-in for the popular ProtCgC knowledge engineering environment and as such should be applicable to a large number of ontology developers.

The logic programming language Prolog has been used extensively in conjunction with relational database systems to exploit the similarity between relations and Prolog ground clauses. However, much of the experience gained in the use of Prolog with relational databases has employed characteristics of the language which are independent of the relational model to build user interfaces and perform query transformation. This thesis describes the use of Prolog for developing semantic and object-oriented database systems. Two systems have been developed, one called P/FDM which is based upon the functional data model, and the other called ADAM which integrates ideas from semantic data modelling with constructs developed for sharing behaviour in object-oriented programming languages. The thesis can be considered to be in three sections. The first reviews resarch into semantic data models and object-oriented programming to identify constructs used by different researchers to structure programs and data. The second presents an overview of the design and implementation of P/FDM and ADAM, using Prolog. The final section focusses in detail upon design and implementation issues tackled with both P/FDM and ADAM, relating to the use of keys with object-oriented databases, rule based query optimisation, support for the persistent storage of objects, and the integration of multiple databases. The use of object-oriented databases is illustrated by a chapter which discusses the storage of protein structure data in relational and object-oriented systems.

Manning United States Army Reserve (USAR) units are fundamentally different from manning Regular Army (RA) units. A soldier assigned to a USAR unit must live within 75 miles or 90 minutes commute of his Reserve Center (RC). This makes reserve unit positioning a key factor in the ability to recruit to fill the unit. This thesis automates, documents, reconciles, and assembles data on over 30,000 ZIP Codes, over 800 RCs, and over 260 Military Occupational Specialties (MOSs), drawing on and integrating over a dozen disparate databases. This effort produces a single data file with demographic, vocational, and economic data on every ZIP Code in America, along with the six year results of its RA, USAR, sister service recruit production, and MOS suitability for each of the 264 MOSs. Preliminary model development accounts for about 70% recruit production variation by ZIP Code. This thesis also develops models for the top five MOSs to predict the maximum number of recruits obtained from a ZIP Code for that MOS. Examples illustrate that ZIP Codes vary in their ability to provide recruits with sufficient aptitude for technical fields. Two subsequent theses will use those results. One completes the MOS models. The second uses the models as constraints in an optimization model to position RCs. An initial version of the optimization model is developed in this thesis. Together, the three theses will provide a powerful tool for analysis of a strategic-based optimal reserve force stationing. / Lieutenant Colonel, United States Army

Approved for public release; distribution in unlimited. / The "paperless' ship is an idea wvhich has been advocated at the highest levels in the Navy. The goal is to eliminate the enormous amount of paper required in the normal operation of a modern naval warship. The ARGOS system under development at the Naval Postgraduate school is a prototype solution which uses HyperCard/HyperTalk for prototype development. The operations functional area, including sections for training, scheduling, message generation, and publication management is an important part of this development. / http://archive.org/details/designimplementa00ault