The ability of the NORMIX algorithm to recover overlapping population structures was compared to the OVERCLUS procedure and another clustering procedure in a Monte Carlo study. NORMIX is found to be more accurate than other procedures in recovering overlapping population structure when appropriate implementation options are specified. (SLD)

Presents a texture-based image-retrieval system for browsing large-scale aerial photographs. System components include texture-feature extraction, image segmentation and grouping, learning-similarity measure, and a texture-thesaurus model for fast search and indexing. Testing has demonstrated the system's effectiveness in searching and selecting…

Uses several approaches to assess the impact that using computer-assisted instruction (CAI) has on students in several undergraduate courses. Describes the various CAI materials, methodology of the assessment process, and the sets of data; analyzes the data; and discusses the results with emphasis on possible reasons for success or failure of CAI.…

Examines the empirical results from an evaluation of interactive software designed to support health-promotion planning. Findings from a case study of two main users of the technology and the program director suggest that users' viewpoints should be exploited in a meaningful manner to explain how and why users make use of technology. Contains 55…

Describes how filtering software programs work, types of filtering software, and common problems that emerge with use. An appendix provides information on Internet-filtering software products, including product name, company name, filter type, platforms supported, price range, Web site, and notes. (AEF)

Describes a computer-aided supplement to the introductory microeconomics course that enhances students' understanding with simulation-based tools for reviewing what they have learned from lectures and conventional textbooks about comparing market equilibria. Includes a discussion of students' learning progressions and retention after using the…

Evaluation of five computer-based integrated learning systems for job skill development (Autoskill, CCC, Invest, Pathfinder, and PLATO) revealed (1) the importance of context (United States vs. Canada); (2) variability of sites being more significant than variability among systems; (3) lack of information on outcomes; and (4) the need to match…

Presents the evaluation of a school technology planner, an integrated electronic performance support system for developing technology use plans (TUP). Discusses reasons teachers chose not to use the software (lack of collegial, administrative, and technological support; lack of time and mixing of district and school perspectives); ranks program…

Describes the formative evaluation of a prototype, computerized, interactive learning and practice program for university students in theoretical computer science. Found the program to provide a rich learning environment. (EV)

Notes that understanding what "free software" means and its implications for access and use of new technologies is an important component of the new literacies. Concludes that if free speech and free press are essential to the development of a general literacy, then free software can promote the development of computer literacy. (SG)

Describes "DotsPlus," a tactile font set that allows computers to print documents in any language which uses the Roman alphabet in tactile form. DotsPlus overcomes such Braille problems as code translation, Braille numbers, exotic symbols, and symbols out of context. A new printing technology (TIGER--Tactile Graphics Embosser) produces DotsPlus…

This paper presents the design, features and pilot evaluation study of a web-based environment--the SORTING environment--for the learning of sorting algorithms by secondary level education students. The design of this environment is based on modeling methodology, taking into account modern constructivist and social theories of learning while at…

Mobile computing facilities may provide many assets to the educational process. Mobile technology provides software access from anywhere and at any time, as well as computer equipment independence. The need for time and place independence is even greater for medical instructors and medical students. Medical instructors are usually doctors that…

Learner centred design methods highlight the importance of involving the stakeholders of the learning process (learners, teachers, educational researchers) at all stages of the design of educational applications and of refining the design through an iterative prototyping process. These methods have been used successfully when designing systems…

Earlier studies have suggested that higher education institutions could harness the predictive power of Learning Management System (LMS) data to develop reporting tools that identify at-risk students and allow for more timely pedagogical interventions. This paper confirms and extends this proposition by providing data from an international…