Multimedia tools for use in materials handling classes

Materials handling is a vital function in a manufacturing or distribution system. Efficient handling of material allows such systems to operate at high levels of productivity. US companies invest over US$60 billion annually in materials handling technology. It is therefore extremely important for universities to prepare materials handling engineers who understand the principles of materials handling, as well as the design, implementation, operation and control of materials handling systems so that they can ensure the cost-effectiveness of this investment. This paper pertains to development of an interactive, multimedia-based system for use in materials handling classes. Modules in the system introduce students to: the 10 principles of materials handling; and two major equipment categories—conveyors and automated storage and retrieval systems. They illustrate industrial applications of material handling equipment and teach the problem-solving process through a case study and an extensive series of models, algorithms, problems and solutions. The modules have been formally evaluated and results are summarized. They are being distributed at a nominal cost to US and international universities. The module described in this paper on the ‘10 principles of materials handling’ was selected as a finalist for the 2002 PREMIER Award for Excellence in Engineering Education Courseware.     

PUBLICATION BIAS: THE ACHILLES' HEEL OF SYSTEMATIC REVIEWS?

ABSTRACT:  The term 'publication bias' usually refers to the tendency for a greater proportion of statistically significant positive results of experiments to be published and, conversely, a greater proportion of statistically significant negative or null results not to be published. It is widely accepted in the fields of healthcare and psychological research to be a major threat to the validity of systematic reviews and meta-analyses. Some methodological work has previously been undertaken, by the author and others, in the field of educational research to investigate the extent of the problem. This paper describes the problem of publication bias with reference to its history in a number of fields, with special reference to the area of educational research. Informal methods for detecting publication bias in systematic reviews and meta-analyses of controlled trials are outlined and retrospective and prospective methods for dealing with the problem are suggested.     

‘Treat me as a human being—don’t look at me as a woman’: femininities and professional identities in further education

This article draws on case study research in two further education (FE) colleges to explore the ways in which women administrators, lecturers and managers negotiate and construct their (gendered, racialized and classed) identities in the workplace. The context is that of the restructuring of education, the ‘feminization’ of educational management, and debates about the de‐ or re‐professionalization of lecturers. The article illustrates how discourses of femininity are drawn upon in the construction of professional identities, and are used to both perform and resist new worker identities and gendered power relations. Despite optimistic discourses about a ‘female future’, the restructuring of further education does not, as yet, appear to have resulted in any notable challenge to the gendered, racialized and classed FE labour market.     

Development of Knowledge about the Role of Inference in Text Comprehension

The goal of this research was to learn when children recognize that they make inferences to understand text, and how this knowledge affects their ability to revise text and to monitor its informativeness. In 4 experiments, first-, second-, and third-grade children (6-10 years) were presented with brief stories in which the physical cause of a target event was described explicitly, implied, or not mentioned in the text. In the first 3 experiments, children judged whether they had inferred the cause or if it had been explicitly mentioned in either the original or a revised version of the story. The results showed that for stories with implicit causes, first- and second-grade children tended to report that the causes had been explicitly mentioned, while third graders correctly reported that the causes were inferred. In the fourth experiment, children were asked to judge the difficulty of inferring the cause from problematic and ambiguous versions of the stories. Older children were more likely to report difficulties in inferring the target information. Third graders were also more likely to revise the texts to include additional information about the causes of the target events. The results show that younger children tend to attribute inferred information of the text, while older children clearly distinguish inferred and explicit text information.     

Sites for Power and Knowledge? Towards a critique of the virtual university

Traditional discourses emanated from sites where agents of knowledge received their professional formation. Postmodernists suggest that the principle that the acquisition of knowledge is indissociable from personal formation is becoming obsolete and that the nature of knowledge cannot survive the information technology revolution unchanged. We examine these propositions with reference to a qualitative study of university staff who were developing and using World Wide Web (WWW) courses. The interview material supports the view that the WWW exemplifies a weakening of the framing of knowledge, has an elective affinity with the individual indulgence of postmodernism and is not effectively controlled through the community of science. Yet the WWW is parasitic on the project of modernism. Its user-friendly surface conceals extreme underlying complexity. The project of reducing professional training to the telematic transmission of an organised stock of knowledge is shown to be ultimately incoherent because it ignores the crucial need for implicit understanding and skill.     

Beyond sensation seeking: affect regulation as a framework for predicting risk-taking behaviors in high-risk sport

Sensation seeking has been widely studied when investigating individual differences in the propensity for taking risks. However, risk taking can serve many different goals beyond the simple management of physiological arousal. The present study is an investigation of affect self-regulation as a predictor of risk-taking behaviors in high-risk sport. Risk-taking behaviors, negative affectivity, escape self-awareness strategy, and sensation seeking data were obtained from 265 high-risk sportsmen. Moderated hierarchical regression analysis revealed significant main and interaction effects of negative affectivity and escape self-awareness strategy in predicting risk-taking behaviors: high-risk sportsmen's negative affectivity leads them to adopt risk-taking behaviors only if they also use escape self-awareness strategy. Furthermore, the affective model remained significant when controlling for sensation seeking. The present study contributes to an in-depth understanding of risk taking in high-risk sport.