Accelerating the Development of Formal Thinking in Pakistan Secondary School Students: Achievement Effects and Professional Development Issues

This article reports the result of using, in the context of Pakistan secondary education, an intervention program which earlier was shown in British schools to have a substantial effect over a 2‐year period on the cognitive development of pupils, and subsequently to have long‐term effects on students' school achievement. This study is not merely a replication; the attempt, in the context of a developing country, has cultural implications which also need discussion. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 259–274, 2000.     

Child and adolescent multidimensional self‐concept: A five‐instrument factor analysis

The factor structure of five self‐concept scales from a hierarchical, multidimensional theoretical model was investigated. The Coopersmith Self‐Esteem Inventory, Multidimensional Self Concept Scale, Piers‐Harris Self‐Concept Scale, Self‐Esteem Index, and the Tennessee Self‐Concept Scale were administered to 221 students in Grades 5 through 8 in a counter‐balanced administration format. The five scales each yielded strong general factors and six dominant factors that coincide with the proposed theoretical model, which reflects social, affect, competence, academic, family, and physical self‐concepts. © 2000 John Wiley & Sons, Inc.     

On the foundations of certain theories of turbulence

The author briefly discusses the foundations of modern theories of turbulence based on hydrodynamics equations. He shows that these theories seem to offer only a limited number of possible solutions.     

On the two-dimensional steady flow of a compressible viscous fluid far behind a solid symmetrical body

A number of writers have observed that the particle size distributions obtained from some breakage processes appear to be logarithmico-normal. There have been virtually no attempts to explain this phenomenon. In this paper a statistical model is constructed for a breakage mechanism which will generate size distributions which are asymptotically logarithmico-normal. In this model, F_n(x), the distribution function of the particle sizes, after n steps of the breakage process, is the distribution function of the product of (n + 1) independent random variables and hence, by the central limit theorem, is asymptotically logarithmico-normal.     

高等教育权力理论的形成和发展

大学是权力组织,存在着复杂的权力现象和权力关系。新的权力理论——权力—目的理论认为,"目的"是外化权力的本质内核,是各种权力要素外化作用形成的某种权力格局的内在规定要素。大学的权力是在与政府、市场相互关系中表现出来的独立性和自主性,大学处于三角形的任一位置都是大学与其他要素"牵拉"作用的结果,从某种意义上说,就是大学的自治程度。大学的自治程度高,则权力大,反之,则权力小。而自治与大学的目的是密切相关的。