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Over the years, educators and psychologists have recommended delaying school entry and have developed alternative interventions for young children identified as unready for school. These developmental placement interventions, including readiness kindergartens and pre‐first classes, were developed to avoid both academic and social‐emotional problems in schools. However, the efficacy of these programs has not been proven. This study examined school adjustment outcomes and emotional and learning difficulties, both short‐term and longitudinally, for students who participated in readiness kindergartens and pre‐first classes, as well as for control groups of students. Significant differences were noted in retention rates, dropout rates, and special education placement rates. © 1999 John Wiley & Sons, Inc.  相似文献   
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In this study, we examined aspects of the 4 2 100 m relay that are amenable to mathematical analysis. We looked at factors that affect the time required to complete the relay, focusing on the performance of elite male athletes. Factors over which the individual athletes, and the team coach, can exercise some control are: the starting positions of the runners on legs 2, 3 and 4, the positions at which baton exchanges occur, the free distances at the baton exchanges and the running order of the athletes. The lane draw is shown to have an important influence on the relay time, although it is outside the control of the team coach. Teams drawn in the outside lanes benefit from the inverse relation between bend radius of curvature and running speed. For teams composed of athletes with different times over 100 m, we show that the fastest relay times are achieved with the fastest athlete taking the first leg, with the slowest two runners allocated to the final two legs.  相似文献   
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Dorfman (1980b) investigated correlates of professional activity in retirement of professors at a major state university who continued to reside in their academic community during the entire year. This follow-up study extends that research to the total population of emeriti by including emeriti who left the University community after retirement and emeriti who continued to live in the University community for part of the year. Interviews were conducted with 113 University of Iowa emeritus professors. There was consistency between level of professional activity during the preretirement career and level of professional activity in retirement for the entire group, with stayers more consistent than leavers. Significant correlates of professional activity in retirement for the entire group included rated importance of consulting and University service, strength of ties to colleagues and professional organizations outside the University, contacts with former students, and perceived rapidity of changes in knowledge in respondents' fields. Multiple regression results showed that the strongest predictors of professional activity in retirement were level of professional activity during the preretirement career and strength of ties to professional organizations outside the University.  相似文献   
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This article provides a critical commentary on the concepts of representation and digital artefacts in Morgan and Kynigos’s article of this Special Issue. To set the context, in the first part, I examine some of the tensions that arose during discussions through the 1980s and 1990s about representation in mathematics education research. Then, I comment on the conceptual differences between Morgan’s and Kynigos’s approaches. These differences point to different epistemological assumptions that lead to different conceptualizations of artefacts in learning processes. In the last part, I argue that Morgan’s and Kynigos’s approaches have the merit of moving the discussion about representations to new theoretical horizons. I suggest, however, that a discussion about representations and digital artefacts requires a thematized account of the manner in which the phenomenological artefact- and representation-mediated knowledge produced by students in the classroom relates to the target cultural mathematical knowledge. Such an account, I contend, requires an explicit ontological conception of knowing and knowledge. I conclude the article with an example in which knowledge is considered as codified movement and knowing as the event of its enactment in concrete practice. Within this Hegelian materialist viewpoint, representations are neither predicated in terms of an adequacy between ideas and their representations nor as heuristic devices in meaning making processes. Representations are rather an integral part of the activity of knowledge presentation.  相似文献   
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This paper provides a foundational framework to bring into conversation indigenous world views in reimagining universities. Highlighting a specific indigenous world view, the university is presented as a site for critical conversation and transformative praxis. We discuss the workplace experiences of indigenous staff in a university and infer from these how management practices related to indigenous staff could be enhanced. Building on our study of Māori academic and administrative staff in a New Zealand university, an indigenous typology and a Wero or challenge matrix is offered, which locates different positions and actions that universities adhere to or seek to emulate. The paper argues for universities to reimagine their policies and practices by drawing from the complex richness of indigenous world views.  相似文献   
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Protecting intellectual property in all its variations is a serious international issue and challenge. While the theft of journal articles may not always be visible, there increasingly is evidence that it is occurring for both commercial publishers and open access publishers. The implications of massive downloading of journal content for unauthorized purposes will differentially impact the sustainability of the business model employed by the publisher. The resulting extremely serious implications, risks, and impacts are identified and considered in a high-hearted manner that contrasts with similar aspects previously encountered in managing unwanted journal donations.  相似文献   
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