Concept learning by direct current design challenges in secondary education

This paper presents a mixed methods study in which 77 students and 3 teachers took part, that investigated the practice of Learning by Design (LBD). The study is part of a series of studies, funded by the Netherlands Organisation for Scientific Research, that aims to improve student learning, teaching skills and teacher training. LBD uses the context of design challenges to learn, among other things, science. Previous research showed that this approach to subject integration is quite successful but provides little profit regarding scientific concept learning. Perhaps, when the process of concept learning is better understood, LBD is a suitable method for integration. Through pre- and post-exams we measured, like others, a medium gain in the mastery of scientific concepts. Qualitative data revealed important focus-related issues that impede concept learning. As a result, mainly implicit learning of loose facts and incomplete concepts occurs. More transparency of the learning situation and a stronger focus on underlying concepts should make concept learning more explicit and coherent.     

Unpacking the Goal Congruence–Organizational Deviance Relationship: The Roles of Work Engagement and Emotional Intelligence

Drawing from research on person–organization fit, work engagement, and emotional intelligence, this study investigates the mediating role of work engagement in the link between goal congruence and organizational deviance, as well as how this mediating effect might be moderated by emotional intelligence. Data captured from 272 employees of four IT companies show that the goal congruence between employees and their supervisor negatively affects the former’s organizational deviance, though this effect disappears when controlling for the intermediate role of work engagement. Further, emotional intelligence moderates both the positive relationship between goal congruence and work engagement and the negative relationship between work engagement and organizational deviance, such that these relationships become invigorated at higher levels of emotional intelligence. The findings also reveal that the indirect effect of goal congruence on organizational deviance through work engagement is more pronounced at higher levels of emotional intelligence, which offers evidence of moderated mediation. These findings have significant implications for research and practice.     

什么因素促使国际油价长期居高不下?

在未来5～10年里,世界大多数人不能够就近并尽其所能地购买和消费包括石油在内的大宗商品,所以牛市将会持续.维持国际油价长期居高不下的主要因素包括:1)世界经济发展形势良好;2)通货膨胀得到有效控制;3)美元大幅贬值;4)石油输出国组织控制石油供应量;5)原油库存减少;6)全球炼油能力无法满足需求;7)石油生产国和消费国对全球石油供需的预测值差异较大,供应无法满足需求.虽然石油价格很高,但需求仍在增长,整个供应链的产能仍然很紧张,石油和天然气在能源中的主导地位并没有面临很大的挑战,这可能就是问题的根本所在.     

Pupils' attitudes to technology in key stage 3 of the national curriculum: A study of pupils in South Wales

This paper describes part of a continuing research project based at the University of Wales, Swansea, which is investigating pupils' attitudes to a range of national curriculum subjects. There has been no major national funded project to evaluate the national curriculum from pupils' perspectives. The market economy philosophy adopted by the present government is restricted in the meaning of choice given to consumers of education. Pupils' opinions are rarely sought out.The paper describes the results gained from a Likert-type attitude scale and subsequent follow-up interviews with a selection of pupils aged 13 and 14 years in secondary schools across South Wales.     

Game equilibrium modelling

Summary Non-cooperative game theory has in recent years become one of the main tools in the social sciences and economics. It deals with decision problems of more than one (rational) player. The actions of those players result in outcomes that are the best that may have happened to a player, given the actions of the other players. This is precisely the content of the 'Nash equilibrium' concept. It would be nice when each game had a unique Nash equilibrium. Unfortunately, both non-existence and multiple equilibria occur. An important role in game theory is played by the information available to the players. Among the economic applications are: the Theory of Industrial Organisation, Bargaining and the Economic Theory of Information.Comments by Eric van Damme and Casper de Vries on an earlier draft of this paper have greatly improved the presentation. I have benefited from the comments of the editor and an anonymous referee ofDe Economist. For all omissions, all possible errors and the revealed views in this paper, I alone am responsible.     

A strategy,structure, human resource database: OASIS

Traditionally, strategic planners and human resource professionals have taken separate approaches in their attempts to improve organization functioning. As a result, strategic planners lack important information that affects the implementation of their plans and human resource managers have little impact on the strategic direction of their orgnizations. The University of Michigan, Hay Associates, and The Strategic Planning Institute have come together in a new venture to build a multicompany database that links organization characteristics and human resource and strategic planning practices with data on company financial performance. The database will be used to make intercompany comparisons on significant organization variables and to identify those practices that lead to improved financial performance.     

The (Price) Core of a Bertrand–Edgeworth Economy

In this paper, a solution concept from cooperative game theory is applied to a special kind of oligopolistic markets. Traditionally, oligopoly theory uses non-cooperative game theory. The cooperative solution concept, the Price Core, has been specially developed for this paper. In contrast to the Core, in the Price Core, different consumers may pay different prices for the same commodity. An example shows that the set of competitive allocations may be a proper subset of the Core and that the Core may be a proper subset of the Price Core. Received July 24, 2001; revised version received February 25, 2002 Published online: December 5, 2002     

Experience,change and vulnerability: consumer education for older people revisited

Everyday consumer transactions have the same potential for unexpected consequence whatever the age of the consumers involved. Young and old alike can find that products and services fail to live up to performance claims and that they are left with problems not easily resolved, or costs that are difficult to recover. While not overlooking consumer heterogeneity – especially on the basis of age – older consumers are arguably distinguishable in terms of the social and financial context in which they make decisions and attempt to redress problems. In 1988, attention was drawn to the need for consumer education to look beyond generic objectives to the specific situation of older people and their transactions. More than a decade later, in an allegedly consumer‐oriented society, the issue is revisited here to assess the argument's current relevance. Despite the increased availability of information for decisions and consumer protection, difficulties persist in the way information is presented or accessed. Chameleon‐like, old problems become manifest in new unfamiliar ways and invalidate experience. Consumer education today is as important as it was in 1988. Arguably, technological change means that the need for a better understanding of dangers, rights and redress procedures is greater than ever and the needs of older people in increasingly complex private and public sector transaction environments are all the more pressing. However, a fundamental revision of the way we approach the design of products, services and environments is needed to improve prospects for older consumers.     

The enterprise response to industrial relations legislation

The authors report a study into the impact of the former Labour Government's industrial relations legislation, much of which remains on the statute book. They focus on joint health and safety committees and provide a useful starting point for further research concerned to develop a model of firm response to industrial relations legislation in any particular subject area.     

Two is not too many for monopoly

Many research contributions have investigated the identity of the leader in oligopolistic markets. As a general rule, this literature points to the leader being either the most efficient, the largest or the best informed player. However, there tend to be exceptions to this rule and it is unclear who will become the leader when firms at the same time are different in size, efficiency of production and/or the quality of the information they have. The present paper reveals insights regarding this last question. As such, it points to the elements that really matter to explain for leadership when firms are different from each other in more than one respect. It turns out that the most efficient firm becomes the leader, regardless whether or not its rival has invested in more capacity. While this result tends to be in line with the previous findings regarding the identity of the leader being the relatively more efficient firm, it contradicts the dominant firm scenario regarding price leadership. This is the result of enlarging the strategy space of the players, by including a buyout option. As such, the paper provides the foundations and hence a theoretical justification for price leadership out of a collusive motive. Since a priori the model also does not exclude a barometric price leadership outcome, it is appropriate to conclude that the buyout option truly is a collusive device strong enough to suppress other reasons for price leadership. Therefore, the arrangements observed in reality aiming at the implementation of buyout possibilities have to be watched very closely from an antitrust perspective.