"Show and tell" in the gymnasium revisited: developmental differences in modeling and verbal rehearsal effects on motor skill learning and performance.

Little research has investigated the observational learning process from a developmental perspective. The purpose of this study was to extend previous research by considering two factors: performance versus learning and sequencing versus form scores. Children (N = 60) comprising two age groups (5-0 to 6-11 and 8-0 to 9-11 years) were randomly assigned to verbal rehearsal only, model only, or model plus verbal rehearsal conditions. The task was a 6-part motor skill sequence in which proper sequencing and quality of form were assessed. A 2 x 3 x 4 (age group by model type by trial blocks) repeated measures MANOVA revealed a significant three-way interaction. Older children performed equally well under any of the model type conditions during both performance and learning. For younger children, a model plus rehearsal was superior to rehearsal only on sequence and form at performance and learning and superior to model only on sequence scores during the first two performance trial blocks. Model only and model plus rehearsal conditions were equally effective on form scores. These results suggest that age differences exist in the modeling of motor skills under conditions varying in model type, sequence and form scores, and performance and learning phases.     

Some approaches to modeling complex information systems

State-of-the-art of modeling complex information systems is briefly discussed. A distinction is made between macrolevel and microlevel modeling of such systems. Modeling approaches and techniques, appropriate for each of these two levels are described and assessed.     

The use of a website in the implementation of a communication policy in an enterprise

The possibility of using an enterprise’s website to implement its communication policy is considered. The classification of websites is presented and the interconnection of objectives for constructing an electronic representation and its information content is described. The role of an enterprise’s information service employees in the construction, support, and promotion of the enterprise’s website is defined.     

VINITI RAN abstract database: Prospects of information postprocessing using methods of data analysis

The All-Russian Institute of Scientific and Technical Information of the Russian Academy of Sciences (VINITI RAN) is active in the development of information and analysis technologies at a conceptual and practical level, using both its own and available domestic and foreign information resources. The aim of this paper is to describe (in the light of emerging trends in the institute) promising approaches to more in-depth information processing and analysis of available data, as well as to discuss the possibilities for creating new types of information products and services designed to support management decisions, not only in science and industry, but also, indirectly, in the economy as a whole.     

Using expert evaluations to complete centralized library systems

An interactive system of expert evaluations of offers made by the Russian and foreign information market of scientific literature issued in both printed and electronic form is described. The system supports the database of experts and the periodically updated database of offers of the information market. An expert evaluation is carried out over the internet from a special division of the LNS RAS site, access to which is available only to authorized users, i.e., experts. Expert selectors make decisions about ordering various editions for funding from the centralized library system by analyzing tables formed based on processed results from expert evaluations with the help of specially created software tools.