Cropping systems,structural change and rural-urban migration in Brazil

Rural out-migration is related interactively to differences in the structure of cropping systems. Individual, rational-decision explanations of migration are inseparable from structural, social explanations. In Cruz das Almas, a municipality in the north-eastern Brazilian state of Bahia, the principal cropping systems are based on production of cassava, tobacco and citrus fruit. Migration differences appear in response to different kinds of demographic pressure, to capital movements and to patterns of productive organization.     

Urgency of trade reform over trade liberalisation

The GATT system has in recent years revealed a number of dangerous weaknesses. Therefore there is reason for concern not only with the further liberalisation of trade within the accepted framework of GATT rules but with a reform of the rules as well.     

The application of a Markov Chain in educational planning

Mathematical models can assist educators in the preparation of their educational plans and their potential in this regard is being increasingly realized. As a result, models have found application at all levels at which planning is conducted.This paper examines the potential of one model—the Markov Chain—which is capable of predicting enrolments for an education system.The model is applied to the New South Wales State Government education system between 1947 and 1961 and the projected enrolments compared to the actual enrolments in those years.Some success is achieved but it appears as if the data rather than the model are responsible for this. The limitations of the Markov Chain approach are discussed and present research and directions listed.     

Behave yourself. Interview by Gardiner Morse

Executive consultant Marshall Goldsmith tells his CEO clients that he's not the real coach; the people around them are. To change your behavior, he says, quit whining about the past and start asking your colleagues how you can do better. You're not done until they think you are.     

How brand attribute typicality and consumer commitment moderate the influence of comparative advertising

This study examines how product attribute typicality and brand commitment influence the effects of comparative versus non-comparative ads on brand attitudes. Employing perspectives from the literatures on typicality and commitment, the study examines the effects of commitment to the comparison brand on the effectiveness of comparative versus non-comparative advertising. A between-informants experiment uses data from 466 student informants. It is hypothesized that (a) when the attribute under consideration is typical (atypical), among comparison brand committed informants, a non-comparative ad is more (no more) persuasive than a comparative ad, (b) when the attribute under consideration is typical, among comparison brand non-committed informants, a comparative ad is more persuasive than a non-comparative ad, and (c) when the attribute under consideration is atypical, among comparison brand non-committed informants, a comparative ad is likely to be more persuasive than a non-comparative ad, but the effect will be weaker than in the case of a typical attribute. Hypothesis (a) is supported while (b) has directional support. The results support a three-way interaction between consumer commitment, attribute typicality, and type of advertisement. The findings are relevant to a variety of contexts, such as markets characterized by high levels of market share and commitment for the market leader as well as fragmented markets where market share and commitment levels are low.     

Learning and product entry: How diversification patterns differ over firm age and knowledge domains in U.S. generic drug industry

This study uses learning theory to show how knowledge domains affect product extension decisions and how these product decisions change as firms age. Faced with the choice of new product‐markets, a firm might decide to introduce a similar product, by leveraging existing firm knowledge, or to experiment with a less familiar product, which requires new knowledge. Using data on new drug introductions in the US generic pharmaceutical industry, the analyses showed clear support for heterogeneous product‐market entry patterns across knowledge domains as the firm ages. Across time, the form of learning shifts from exploration to exploitation. Copyright © 2013 John Wiley & Sons, Ltd.