Ten Years of CERI

Summaries

English

The purpose of this study was to determine whether the different value positions claimed by Macdonald to be inherent in his three curriculum development models resulted in differences in the content of science curricula and/or the organization of such content. Information on this subject was obtained from a sample of 90 randomly‐chosen science teachers vvho examined junior high school physical science curricula, then completed a questionnaire used as a measuring instrument. This instrument was based on established criteria for selecting and organizing content for a curriculum. From the results obtained, it was concluded that significant differences in content as well as in content organization did indeed exist in the science curricula representative of Macdonald's three models. Moreover, it was found that content representative of specifie groups of selection criteria such as discipline‐oriented, societal needs, and student needs was responsible for the differentiation in the content among the models. Thus, the findings supported Macdonald's contentions. This information should be useful in future science curriculum development.     

Determinants of stable volunteering in Swiss soccer clubs

This study analysed the underlying determinants of soccer club volunteers’ tendency to continue or terminate their voluntary engagement. Stable voluntary engagement was analysed in terms of volunteers’ subjective expectations regarding club-related working conditions, expressed by level of job satisfaction and orientation of collective solidarity to their soccer club. These relationships were tested empirically using an online questionnaire with 345 volunteers in a selection of 20 Swiss soccer clubs. The results indicate that the volunteers’ job satisfaction and orientation toward collective solidarity correlated positively with their volunteering commitment. The discussion presents recommendations to help both Swiss soccer clubs as well as the Swiss Soccer Association to retain their volunteers more effectively.     

Editorial

Ohne Zusammenfassung     

Control System Digital Computer Transfer Function Simulation

The z transform of simple delay, integrator, leadlag, and differentiator networks are suggested as the basic building blocks for simulating complex control systems on a digital computer. The system parameters retain their explicit identity, thus facilitating analysis and design of the system as a function of specific parameter changes.