This dissertation studies consumer search behavior in markets where buyers have incomplete information about available goods, such as markets with many sellers or frequently changing prices. In these markets, consumers engage in costly search in order to collect information necessary for making a purchase. Our method of investigation combines…

In recent years, tags have become a standard feature on a diverse range of sites on the Web, accompanying blog posts, photos, videos, and online news stories. Tags are descriptive terms attached to Internet resources. Despite the rapid adoption of tagging, how people use tags during the search process is not well understood. There is little…

This study is about the information-seeking behavior that bilingual users -- specifically, native Chinese speakers whose second language is English -- exhibit when performing an online search. Bilingual online searching occurs when bilingual users submit queries to search for information in two languages. This study seeks to explore the…

PubMed® is an on-line literature database hosted by the U.S. National Library of Medicine. Containing over 21 million citations for biomedical literature--both abstracts and full text--in the areas of the life sciences, behavioral studies, chemistry, and bioengineering, PubMed® represents an important tool for researchers. PubMed® searches return…

Despite widespread acknowledgement that Internet access in libraries and schools is filtered, the effects of that filtering on faculty who must utilize such a system for research, teaching, and curriculum development in American higher education are not known. This qualitative case study explored faculty experiences of Internet filtering in terms…

Search engines have now become essential tools in all aspects of our life. Although a variety of information needs can be served very successfully, there are still a lot of queries that search engines can not answer very effectively and these queries always make users feel frustrated. Since it is quite often that users encounter such "difficult…

Researchers that investigate the media's coverage of health have historically relied on keyword searches to retrieve relevant health news coverage, and manual content analysis methods to categorize and score health news text. These methods are problematic. Manual content analysis methods are labor intensive, time consuming, and inherently…

The new trend on the Web has totally changed today's information access environment. The traditional information overload problem has evolved into the qualitative level beyond the quantitative growth. The mode of producing and consuming information is changing and we need a new paradigm for accessing information. Personalized search is one of…

Context: This dissertation examines beliefs and uses regarding tagging among current undergraduate students, and examines the ecology of communications practice and implications for formation and maintenance of identity within the population. Currently enrolled undergraduate students at UNC-Chapel Hill formed the population for examination. …

Theatres provide artistic value to many people and generate revenue for communities, yet little research has been conducted to understand or support theatrical designers. Over 1,800 non-profit theatres and 3,522 theatre companies and dinner theatres operate in the United States. In 2008, 11 million people attended 1,587 Broadway shows for a total…

Given the nature of the valuation task environment appraisers are often made aware of previous value opinions rendered by appraisers, commonly in the form of an historic appraisal. And, because an appraisal task involves the rendering of market value, a hypothetical, unobservable construct based on probabilities, direct feedback against this…

Language plays a very important role in understanding the culture and mindset of people. Given the abundance of electronic multilingual data, it is interesting to see what insight can be gained by automatic analysis of text. This in turn calls for text analysis which is focused on non-topical information such as emotions being expressed that is in…

This qualitative study examines first-year college students' online search habits in order to identify patterns in millennials' mental models of information retrieval. The study employed a combination of modified contextual inquiry and concept mapping methodologies to elicit students' mental models. The researcher confirmed previously observed…

This dissertation explores the use of geometric and graphical models for a variety of information search and filtering applications. These models serve to provide an intuitive understanding of the problem domains and as well as computational efficiencies to our solution approaches. We begin by considering a search and rescue scenario where both…

School absenteeism and truancy have been of concern to schools, courts, communities and researchers since compulsory education laws were first put into effect. Despite the attention given to this problem and significant effort aimed at improving student attendance, school absenteeism remains a serious problem. A number of qualitative reviews of…