Two experiments explored the differential effects of two kinds of organization (taxonomic and schematic) on retrieval of information. (Author/PN)

Three experiments compared congenitally blind and sighted adults and children on paired-associate, free-recall, and imaging tasks presumed to involve visual imagery in memory. In all three, blind subjects' performances were remarkably similar to the sighted. Results challenge previous explanations of performance such as Paivio's (1971). (Author/RD)

A 12-item stimulus list composed of three conceptual categories, each with two low- and two high- associated word pairs, was presented for free Ss recall to 20 educable mentally retarded (EMR) preadolescents, 20 EMR adolescents, and 20 nonretarded fourth-grade children who showed associative clustering in accordance with preexperimental interitem…

Introduces new procedures being used to extract knowledge from databases and discusses rationales for developing knowledge discovery methods. Methods are described for such techniques as classification, clustering, and the detection of deviations from pre-established norms. Examines potential uses of knowledge discovery in the information field.…

Describes the cluster system of targeted marketing analysis, which uses geodemographic analysis to develop understanding of communities at the micro level. Characteristics of some types of neighborhoods found in the United States are described and the use of this approach by librarians conducting community analyses is discussed. (CLB)

The fragmentation in many children's homes and neighborhoods is reflected in their schools. To reform the nation's urban schools, educators must find ways to take collective responsibility for students' performance over their entire school careers. Reorganization according to feeder-pattern clusters can help teachers from various school levels…

Two articles discuss the clustering of composite representations in the Cystic Fibrosis Document Collection from the National Library of Medicine's MEDLINE file. Clustering is evaluated as a function of the exhaustivity of composite representations based on Medical Subject Headings (MeSH) and citation indexes, and evaluation of retrieval…

Authentic learning consists of applying relevant knowledge, thinking skills, and interpersonal skills to solving real-world problems. Students assume roles of firsthand investigators, writers, artists, or other practitioners committed to producing a product or a service. A Connecticut high school's video-production company embodies a successful…

Defines the notion of serial clustering of words in text, and explores the value of such clustering as an indicator of a word's bearing content. This approach is flexible in the sense that it is context-sensitive; a numerical approach may also be of value in assigning weights to terms in requests. Experimental support is obtained from natural text…

This article describes an enrichment cluster approach designed to create highly challenging learning opportunities that allow high potential students to identify themselves. The enrichment clusters focus students' attention on authentic learning applied to real-life problems. Guidelines for enrichment clusters are discussed, along with the teacher…

Discusses precision and recall in information science and proposes a new model based on fractal geometry for clusters of relevant documents. Search strategies for retrieving a group of relevant documents are reviewed; fractal sets and chaotic processes are described; and the new model is explained. (Contains 43 references.) (LRW)

Proposes a mining process to automate author co-citation analysis based on the Web Citation Database, a data warehouse for storing citation indices of Web publications. Describes the use of agglomerative hierarchical clustering for author clustering and multidimensional scaling for displaying author cluster maps, and explains PubSearch, a…

Staff development practices that successfully implemented long-term applications of cluster grouping in two districts are analyzed, compared, and reviewed. Parallel practices and differences are discussed concerning program beginning, implementation, and maintenance. Conclusions are drawn and six steps for use and consideration by others engaged…

The Public Elementary/Secondary School Universe Survey Data provides information about schools such as: type of school (special education, vocational education, charter, magnet); students by grade, race/ethnicity and gender; free lunch eligibility; and classroom teachers. All data are for public elementary and secondary schools for the 2003-04…

This article provides a brief overview of the qualities of American presidential leadership as well as two rubrics that social studies students can utilize to analyze candidates for the presidency in the past, present, and future. Presidents often exhibit certain characteristics or attributes that make them effective leaders. These abilities…