The notion of creativity has its natural home in the fine arts, where the artist literally creates something that can be perceived by the senses. The products of mathematical activity are clearly not of this kind, yet some distinguished mathematicians have claimed that mathematics offers considerable scope for creativity. The title of the book under review, and some claims to be found in it, suggest that creativity can indeed be associated with mathematics, and that young children may experience it in the classroom. We suggest that the word creative is being used in rather different senses in these different contexts, yet the meanings associated with the arts, say, are in danger of being applied to mathematical situations for rhetorical purposes.This revised version was published online in September 2005 with corrections to the Cover Date. 相似文献
This article focused on the analysis of four years of circulation data from print monographs acquired through an approval plan and firm ordering and incorporated interlibrary loan data to compare purchases with demand. A group of subject areas, including communication, psychology, and engineering were selected as examples for in-depth analysis. Using R programming, the authors automated an analysis to identify areas needing attention. The results from the analysis, together with librarians' subject expertise, enabled librarians to adjust monograph purchases accordingly. 相似文献
A meta-analysis of 26 primary studies, yielding 76 pair-wise comparisons of dynamic and static visualizations, reveals a medium-sized overall advantage of instructional animations over static pictures. The mean weighted effect size on learning outcome is d = 0.37 (95% CI 0.25–0.49). Moderator analyses indicate even more substantial effect sizes when the animation is representational rather than decorational (d = 0.40, 95% CI 0.26–0.53), when the animation is highly realistic, e.g., video-based (d = 0.76, 95% CI 0.39–1.13), and/or when procedural-motor knowledge is to be acquired (d = 1.06, 95% CI 0.72–1.40). The results are in line with contemporary theories of cognitive load and multimedia learning, and they have practical implications for instructional design. 相似文献
A policy at a New Zealand University to assess lecturers’ teaching performance as an administrative requirement provided for information to be obtained from the chairperson, colleagues, students and the individual being evaluated.
In designing the summative scales to obtain student feedback, four conditions were seen as important for achieving a system acceptable to both lecturers and students. These conditions—length of scale, time to complete the scale, face validity of the scale and the acceptability of the procedures used to distribute the scales, together with the context within which teaching takes place at the Institution, provided constraints to the design of the summative scales.
Following 98 lecturing and 43 course evaluations, the scales were subjected to a principal factor analysis. This analysis showed that the items most strongly related to overall teaching effectiveness, as assessed by students, included the lecturer's ability to communicate ideas and information and to stimulate interest in the subject.
By pooling student ratings from different teaching situations for any one lecture, a Teaching Performance Profile was prepared. This profile increased the reliability and validity of the information obtained. At the same time it provided a summary suitable for combining with the evaluative . information from the other three sources in making a judgement as to the individual's level of teaching competency. 相似文献
The authors discuss a key issue affecting the educational potential of interactive computer simulations—their possible lack of credibility. They explore the circumstances under which students are able to separate'magical'features from those which map easily and directly onto the real world, and the relationship between their perceptions of events on and off the computer. They put forward some means of overcoming disbelief through manipulating the degree of reality inherent in simulations and offer suggestions for how future research might address these issues. 相似文献
This paper examines international standard-setting in the toxicology of pharmaceuticals during the 1990s, which has involved both the pharmaceutical industry and regulatory agencies in an organization known as the International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (ICH). The analysis shows that the relationships between innovation, regulatory science and 'progress' may be more complex and controversial than is often assumed. An assessment of the ICH's claims about the implications of 'technical' harmonization of drug-testing standards for the maintenance of drug safety, via toxicological testing, and the delivery of therapeutic progress, via innovation, is presented. By demonstrating that there is not a technoscientific validity for these claims, it is argued that, within the ICH, a discourse of technological innovation and scientific progress has been used by regulatory agencies and prominent parts of the transnational pharmaceutical industry to legitimize the lowering and loosening of toxicological standards for drug testing. The mobilization and acceptance of this discourse are shown to be pivotal to the ICH's transformation of reductions in safety standards, which are apparently against the interests of patients and public health, into supposed therapeutic benefits derived from promises of greater access to more innovative drug products. The evidence suggests that it is highly implausible that these reductions in the standards of regulatory toxicology are consistent with therapeutic progress for patients, and highlights a worrying aspect embedded in the 'technical trajectories' of regulatory science. 相似文献
This paper evaluates the typically applied rules for awarding R&D subsidies. We identify two sources of inefficiency: the selection based on a ranking of individual projects, rather than complete allocations, and the failure to induce competition among applicants in order to extract and use information about the necessary funding. In order to correct these inefficiencies we propose mechanisms that include some form of an auction in which applicants bid for subsidies. Our proposals are tested in a simulation and in controlled lab experiments. The results suggest that adopting our proposals may considerably improve the allocation. 相似文献