This article presents a cognitive map proposed to be associated with understanding of the “system concept,” one component of the physics principle of Newton's second low. A definition of the concept is followed by the results of a problem‐solving experiment designed to investigate whether or not good problem solvers possess cognitive structures similar to the one proposed. Think‐aloud protocols were collected as subjects solved a series of physics problems involving Newton's second law. Coding schemes were used to analyze these protocols (...) and to develop a quantitative index intended to reflect the extent to which subjects possessed certain components of the proposed structure. This index proved a highly significant predictor of performance on Newton's second law transfer problems contained in a written exam. In contrast, performance on a set of familiar problems in the same written exam was not a good predictor of performance on transfer problems. These results indicate that cognitive structures that connect the equation ΣF = ma and the concept of choosing appropriate systems are at least part of what constitutes understanding of the principle of Newton's second law. Implications for physics education and problem‐solving research are presented. (shrink)

Corporate governance is increasingly becoming an issue of global concern, not least because we are more and more living in a corporate world that transcends international boundaries. The main purpose and motivation of this study is to determine how the international community should motivate businesses in fostering exemplary corporate governance, therefore eliminating obstacles to ethically exemplary behavior. The empirical approach utilized here has been applied to 161 businesses, both listed and over-the-counter (OTC) companies, with the results indicating that ethical considerations, (...) corporate governance and organizational performance are inextricably linked and, to an extent, demonstrably proportional. This study also indicates a major finding that family management is a significant mediating variable of the ethical considerations of corporate governance and organizational performance. Finally, this study has developed an operational model of ethical considerations of corporate governance as a consultancy aid for businesses that wish to implement and/or boost their performance in respect to corporate governance. (shrink)

In this paper a semantics for dynamic predicate logic is developed that uses sequence valued assignments. This semantics is compared with the usual relational semantics for dynamic predicate logic: it is shown that the most important intuitions of the usual semantics are preserved. Then it is shown that the refined semantics reflects out intuitions about information growth. Some other issues in dynamic semantics are formulated and discussed in terms of the new sequence semantics.

Companies do have ethical responsibility and are not protected by limited liability from the consequences of their actions. A company's record and the preception of its ethics affect its reputation and ensure long term success or failure.The financial community has a history of placing moral considerations above legal or opportunistic expedients. But we are often exposed to moral dangers and the dangers of contamination are increasing. Deregulation and the technological revolution are sharpening ethical conflicts.