Introduces this issue, which contains papers from the 1991 Data Compression Conference, and defines data compression. The two primary functions of data compression are described, i.e., storage and communications; types of data using compression technology are discussed; compression methods are explained; and current areas of research are…

Describes a modified frequency-sensitive self-organization (FSO) algorithm for image data compression and the associated VLSI architecture. Topics discussed include vector quantization; VLSI neural processor architecture; detailed circuit implementation; and a neural network vector quantization prototype chip. Examples of images using the FSO…

Maintains that the central journalistic function is changing from the transportation of information to its processing. Offers a model for the more sophisticated standard of objectivity needed by the new process-intensive journalism. Discusses changes in journalism training to meet these demands. (SR)

Investigated role of response time on Wechsler Intelligence Scale for Children-Revised. For 131 children, total response time score for correct and incorrect performance was gleaned from each of Picture Arrangement, Block Design, and Object Assembly subtests. Examined utility of these response time measures in relation to other subtests. Discusses…

Examines answer selection within the framework of QUEST, a psychological model of question answering that specifies how knowledge structures are searched during question answering. Examines whether both "legal" and "illegal" answers were activated during the search. Finds support for QUEST's arc-search procedures associated…

Undergraduates read a passage describing social groupings of fish, their color, depth, size and diet. Subjects concurrently viewed a graphic organizer (GO) presenting this information in a matrix-like format. Half the GOs were semantically congruent with the text, organized according to social grouping; the others were spatially organized.…

The present study aimed to comprehensively examine social cognition processes in children with and without learning disabilities (LD), focusing on social information processing (SIP) and complex emotional understanding capabilities such as understanding complex, mixed, and hidden emotions. Participants were 50 children with LD (age range 9.4-12.7;…

In this paper we examine two long-standing assumptions of the information processing perspective of perceptual-motor development, namely that: (1) the amount of noise in children's sensori-motor system decreases with increases in age up to adulthood; and (2) this age-related reduction in noise level leads to associated improvements in the accuracy…

Over the past several decades, millions of digital objects of significant scientific, economic, cultural, and historic value have been published and distributed to libraries and archives on removable media. Providing long-term access to these documents, media files, and software executables is an increasingly complex task because of dependencies…

Around 1960, there were quite radical changes in emphasis in many countries in school chemistry education, with subsequent changes in many university courses. Considerable research was undertaken to explore the learning problems students were reporting and the common thread underlying became apparent: it related to the way humans process new…

Purpose: In light of the excessively broad conceptions and nonobservable terms generally characterizing discussions of organizational learning, this study explores the notion of organizational learning in schools through the conceptual framework of organizational learning mechanisms (OLM) and develops a measure of OLM at the elementary school…

In this article, time effects on intelligence test scores have been investigated. In particular, we examined whether the "Flynn effect" is manifest in children from the middle and higher IQ distribution range, measured with a child intelligence test based on information processing principles--the Leiden Diagnostic Test. The test was administered…

Contrary to system-controlled multimedia learning environments, hypermedia systems are characterized by a high level of interactivity. This interactivity is referred to as learner control in the respective literature. For several reasons this learner control is seen as a major advantage of hypermedia for learning and instruction. For instance,…

A listing of organizations providing computer searches of the ERIC data base. (JH)