In this paper, we present a data-based user modeling framework that uses both unsupervised and supervised classification to build student models for exploratory learning environments. We apply the framework to build student models for two different learning environments and using two different data sources (logged interface and eye-tracking data).…

This dissertation addresses the related questions of how online communication technologies affect communication in science and, more broadly, how new ways of interaction in online spaces affect how texts enact genres. Genres have been usefully thought of as typified discursive responses to recurrent social exigences, and much recent work has shown…

In 2004 ECMC Foundation published a guide called "Realizing the College Dream" (RTCD) which is designed for educators and staff to help low-income, first-generation college, middle and high school students increase their expectations of attending postsecondary education, and take steps to realize this goal. While ECMC Foundation trainings and…

Achieving the goals of federal education legislation depends on how federal funds are distributed and used. Since the enactment of the Elementary and Secondary Education Act (ESEA) in 1965, various federal programs have been created to support educational improvement and target additional resources to meet the educational needs of children who are…

This study investigates the relationships between the use of a zoom tool, the terms they supply to describe the image, and the type of image being viewed. Participants were assigned to two groups, one with access to the tool and one without, and were asked to supply terms to describe forty images, divided into four categories: landscape, portrait,…

This study describes the results of a survey and a description of instructional technologies in place in the social sciences in South African Universities. Lecturers in the social sciences reported a well-established practice of information and communication technologies (ICTs) use for general purposes (although frequent use tended to be for email…

Comparisons of "hard" and "soft" science in a user study and a citation study are shown to exhibit a previously unnoticed complementarity. (Author/PF)

Examined Food Stamp Program participation rates and reasons for nonparticipation in a survey of 2,242 elderly. Uncertainty or lack of knowledge about program eligibility was the most important reason for nonparticipation. Perceived stigma and transportation barriers were also factors. (JAC)

Increased crowding in wilderness areas and in the National Parks is discussed. Wilderness management, patterns of use, use density related to crowding, and possible solutions are detailed. (BT)

A summary and overview is given of a several-year research project, Requirements Study for Future Catalogs.'' The research was intended essentially to ascertain what information should be recorded in future library catalogs in order to best serve their users. Various publications and reports based on the project are summarized. (Author/NH)

This paper attempts to analyze the problem of congestion, using a mathematical model shown to be of value in other similar applications. Three criteria of congestion are considered, and it is found that the conclusion one can draw is sensitive to which of these criteria is paramount. (8 references) (Author/NH)

A model identifying seven principal dimensions of information systems and sources is developed and tested. The dimensions are defined in terms of required user behavior, with an associated scale indicating differential levels of this behavior. Both system design behavior and probable use behavior information in compatible forms are yielded. (15…

Significant nonduplicative literature on MARC and BNB-MARC is surveyed and characterized. Time lag in publication and the proliferation of ephemera are noted. Two categories of the literature are identified: reports in many formats by individuals and groups associated officially with MARC, and publications of MARC users or observers. (61…