A template tracker is a tracker based on matching a pre-initialised view of an object with the object's view in an image sequence. Using an error function, the intensity difference between the template view and the templated region in the image is measured. This error measure is used as the basis for a template alignment algorithm that will adjust the template's pose to more accurately register the template view with the view of the object in the image. Some significant problems present themselves with this simple tracker. Extraneous, or non-object, pixels within the template boundaries can cause bias in the registration of the template. Partial occlusions of the object's view in the image can also cause serious bias in the template's pose. Beyond simple occlusions there are transits of occlusions across an object. Occlusion transits are significant because over time they can occlude the entire object in an incremental fashion. If initially the template view is not completely known this kind of occlusion can easily cause a total tracking failure for an object. In this thesis three enhancements of the basic template tracker are proposed: Ownership Masks, Cooperative Templates, and Evolving Views. Ownership Masks are aimed at eliminating the extraneous pixels from the template view. Cooperative templates are used to separate the intensity probabilities when more than one template covers a pixel. Building upon both Ownership Masks and Cooperative Templates, Evolving Views update the template views when occlusion transits are a problem. With these enhancements we have been able to increase the accuracy of tracking objects where large portions of a template contain background pixels. Also occlusions and some types of unocclusions can be detected and discriminated. Finally, some failures in the basic tracker due to occlusion transits have been overcome.

Web application design is a broad term that refers to any aspect of designing a Web application, including designing Web interfaces to data. There are a number of commercial software tools available that employ various techniques for implementing Web access to databases. However, these techniques apply only to portions of Web application implementation and lack a common design paradigm. We believe that defining an approach to designing and implementing Web applications based on views, frameworks, and patterns allows us to extend an object-oriented design representation and develop reusable and extensible design solutions for a class of Web applications in which the concerns are separated. The major contribution of this thesis is the development of a new approach to designing Web applications, producing the following visible contributions: a model for Web applications based upon a separation of concerns using views; a framework for system elements so that object-oriented design patterns can be used to build the application; a reusable design approach so that many Web applications can be built around the same framework; a coherent and organized framework representation using extended UML; and an implementation approach that can be implemented on a number of different platforms using a range of software and tools. In support of this solution, this thesis shows the design and implementation of a proof-of-concept Web application using this design technique. We believe that the approach to Web application design promoted in this thesis has proven itself useful in a practical way for the case studies discussed herein and points the way to a wider range of design and implementation possibilities.

Database systems employ physical structures such as indexes and materialized views to improve query performance, potentially by orders of magnitude. It is therefore important for a database administrator to choose the appropriate configuration of these physical structures (i.e., the appropriate physical design) for a given database. Deciding on the physical design of a database is not an easy task, and a considerable amount of research exists on automatic physical design tools for relational databases. Recently, XML database systems are increasingly being used for managing highly structured XML data, and support for XML data is being added to commercial relational database systems. This raises the important question of how to choose the appropriate physical design (i.e., the appropriate set of physical structures) for an XML database. Relational automatic physical design tools are not adequate, so new research is needed in this area. In this thesis, we address the problem of automatic physical design for XML databases, which is the process of automatically selecting the best set of physical structures for a given database and a given query workload representing the client application's usage patterns of this data. We focus on recommending two types of physical structures: XML indexes and relational materialized views of XML data. For each of these structures, we study the recommendation process and present a design advisor that automatically recommends a configuration of physical structures given an XML database and a workload of XML queries. The recommendation process is divided into four main phases: (1) enumerating candidate physical structures, (2) generalizing candidate structures in order to generate more candidates that are useful to queries that are not seen in the given workload but similar to the workload queries, (3) estimating the benefit of various candidate structures, and (4) selecting the best set of candidate structures for the given database and workload. We present a design advisor for recommending XML indexes, one for recommending materialized views, and an integrated design advisor that recommends both indexes and materialized views. A key characteristic of our advisors is that they are tightly coupled with the query optimizer of the database system, and rely on the optimizer for enumerating and evaluating physical designs whenever possible. This characteristic makes our techniques suitable for any database system that complies with a set of minimum requirements listed within the thesis. We have implemented the index, materialized view, and integrated advisors in a prototype version of IBM DB2 V9, which supports both relational and XML data, and we experimentally demonstrate the effectiveness of their recommendations using this implementation.

The purpose of this thesis is to gain a greater understanding of Aboriginal world views and determine their implications for the education of Aboriginal adults. Aboriginal world views are the fundamental assumptions or deep structures which form the basis of Aboriginal cultures. World views are mediated and expressed through language, dance, art, and religion. In this research I chose to gain; a greater understanding of Aboriginal world views by, interviewing the Aboriginal staff and students of the Prince George Native Friendship Centre.<p>I began the fieldwork for this ethnographic study in June of 1992 by interviewing the staff and students of Project Refocus, by taking part in two classes with the students of the Start Program, and by entering into conversations with individual staff members from a variety of programs. Four of the participants in these interviews: became key respondents who acted as editors of my written work and guides for my ongoing investigation. I built upon the knowledge gained in our conversations by reading the' literature pertaining to Aboriginal world views. This knowledge was further supplemented by my participation in such Aboriginal ceremonies as the sweatlodge and the pipe ceremony. Personal narrative is entwined with academic discourse throughout the thesis in order to reflect the manner in which I gained a greater understanding of Aboriginal world views.<p>Examination of the interview transcripts revealed two themes common to the world views of the Aboriginal participants. The first theme, harmonious relationships, demonstrates the value these participants place on living in harmony with the other human and non-human entities who inhabit the world. Recognizing that all entities are important to the continuation of life, the participants in this research work to enhance and preserve their relationships with their human and non-human cousins. The second theme, spirituality, refers to many participants' belief that all aspects of the natural world possess, spiritual characteristics. The spiritual dimensions of nature link human and non-human together in kinship, and lead to greater knowledge and understanding.<p>Having examined the two themes of harmonious relationships and spirituality, I go on to discuss their implications for the education of Aboriginal adults. Foremost among these is that knowledge has a social purpose; it is not acquired for personal gain but is to be used for the benefit of the human and non-human community. Second, Aboriginal peoples consider that the relationship between educator and learner lies at the heart of the educative process in contrast to Euro-Canadian education which stresses the transmission of skills and knowledge. Third, education does not interrupt the harmonious interrelationships found in nature. Finally, approaches to the education of Aboriginal adults should incorporate their spiritual understandings, for their knowledge and wisdom are spiritually inspired.

The main purpose of the study was to investigate the effect of instruction with concrete models on eighth grade students&rsquo / probability achievement and attitudes toward probability. Another aim was to examine students&rsquo / views about instruction with concrete models. The study was conducted in a private school in a big city in Central Anatolia Region with 12 eighth grade students. Both quantitative and qualitative research designs were used. The treatment was applied by the mathematics teacher for 4 hours per week throughout 4 weeks. Probability Achievement Test and Probability Attitude Scale were administered to collect data. In order to analyze the data, Friedman and Wilcoxon tests were used. Also, the interview was carried out with 11 students to determine their views about the instruction. It was found that there was a statistically significant change in probability achievement of eighth grade students participated in the instruction with concrete models across three time periods. In other words, it was found that there were statistically significant positive changes in students&rsquo / probability achievement from pre-intervention through post-intervention and from pre-intervention through follow-up. It was also found that there was no statistically significant change in students&rsquo / probability achievement from post-intervention through follow-up. The results also revealed that there was no statistically significant change in students&rsquo / attitudes toward probability across three time periods. Moreover, according to findings of the interview it was determined that most of the students had positive views about the effects of instruction with concrete models on their cognitive processes and on their attitudes toward concrete models and probability lessons.

This research aimed at investigating pre-service and in-service preschool teachers&rsquo / views regarding creativity in early childhood education by determining similarities and/or differences among their views. The data of the study was gathered from 10 pre-service and 11 in-service teachers by asking their views about creativity in early childhood education. This study has been realized by the qualitative research method and the data was gathered through a type of interview, namely focus group technique. The seven basic interview questions developed by Aslan &amp / Cansever (2009) for primary school teachers were rephrased considering early childhood education context. In the data analysis procedure, four basic themes were constituted: &ldquo / teachers&#039 / views on creativity&rdquo / , &ldquo / teachers&#039 / views on creative people&rdquo / , &ldquo / teachers&rsquo / views on the importance of creativity in early childhood education&rdquo / , and &ldquo / teachers&rsquo / views on the obstacles to creativity in early childhood education&rdquo / . The results demonstrated that although every participant had their own creativity definitions, they agreed on some common ideas about creativity. The participants were aware of the value of creativity in preschool education and they stated that they prepare and implement creative activities to nurture children&rsquo / s creativity as well as stating that there are many obstacles to achieve this goal. They indicated that these obstacles are mostly based on school administrators, teachers, and parents. Moreover, it was concluded that the most striking difference between pre-service and in-service early childhood teachers&rsquo / views was the fact that unlike in-service teachers, only the pre-service teachers gave some recommendations to tackle with the obstacles to children&rsquo / s creativity.

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<p>Information in a data warehouse is stored in materialized views, which must be kept consistent with respect to changes made in the sources. This problem has been extensively studied in the relational model. The process is referred to as view maintenance.</p><p>XML is emerging as the de facto standard for data representation and data exchange of semistructured data. Most discussions involving XML assume the XML data is stored in plain text files. However, there are a number of different approaches for storing XML data, which can be categorized according to the underlying system used.</p><p>Views and materialized views can also be specified in XML. This dissertation investigates how view maintenance in an XML context is influenced by the utilized approach for storage. We survey existing storage strategies using a relational database as the underlying system for storage, and storage strategies using plain text files. Further, we survey approaches for maintenance in the context of XML. We investigate three selected storage strategies in detail. We conclude with some insights gained during the investigation.</p>

published_or_final_version / Sociology / Master / Master of Social Sciences