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171.
Douglas L. Robertson 《Innovative Higher Education》1999,23(4):271-294
Building carefully on the college teaching and adult development literatures, this paper presents a model that describes the perspective of professors at various developmental positions with regard to their work as teachers. The model comprises five, interrelated positions: (a) three stable periods—Egocentrism (teacher-centeredness), Aliocentrism (learner-centeredness), and Systemocentrism (teacher/learner-centeredness); and (b) two transitional periods—one between each of the two potential movements from one stable period to the next. The model integrates the constructs of previous typologies, adds a significant new construct, and arranges the total array of perspectival constructs in a typical developmental sequence. 相似文献
172.
173.
Implicit overcompensation: the influence of negative self-instructions on performance of a self-paced motor task 总被引:1,自引:0,他引:1
According to Wegner's (1994) theory of ironic processes of mental control, self-instructions not to perform in a certain way, together with mental loads, can induce thoughts, emotions, and behaviours that are precisely the opposite of intention. Wegner's theory was tested against the implicit overcompensation hypothesis, which states that movement direction and magnitude are implicitly dictated by self-instruction, irrespective of load, promoting overcompensation of action. Two experiments were conducted using a golf-putting task. In Experiment 1, 48 participants were randomly assigned to one of four load conditions: cognitive, visual, auditory, and self-presentation/incentive. In the experimental trials, participants were instructed to make the putt, but it was emphasized that the putt should not be left short of the target. Following the instructional strategy, putts landed significantly longer than at baseline, irrespective of load. In Experiment 2, 36 participants were divided into one of three groups, without load, in which different instructional sets (control, not putting long, and not putting short) were emphasized. A significant interaction emerged, as participants putted significantly longer or shorter than controls depending on the instructional set given. Overall, our findings support the implicit overcompensation hypothesis. Theoretical and practical considerations are discussed. 相似文献
174.
On Collection Size and Retrieval Effectiveness 总被引:3,自引:0,他引:3
The relationship between collection size and retrieval effectiveness is particularly important in the context of Web search. We investigate it first analytically and then experimentally, using samples and subsets of test collections. Different retrieval systems vary in how the score assigned to an individual document in a sample collection relates to the score it receives in the full collection; we identify four cases.We apply signal detection (SD) theory to retrieval from samples, taking into account the four cases and using a variety of shapes for relevant and irrelevant distributions. We note that the SD model subsumes several earlier hypotheses about the causes of the decreased precision in samples. We also discuss other models which contribute to an understanding of the phenomenon, particularly relating to the effects of discreteness. Different models provide complementary insights.Extensive use is made of test data, some from official submissions to the TREC-6 VLC track and some new, to illustrate the effects and test hypotheses. We empirically confirm predictions, based on SD theory, that P@n should decline when moving to a sample collection and that average precision and R-precision should remain constant. SD theory suggests the use of recall-fallout plots as operating characteristic (OC) curves. We plot OC curves of this type for a real retrieval system and query set and show that curves for sample collections are similar but not identical to the curve for the full collection. 相似文献
175.
Li J Runderson RA Burnham JF Staggs GB Robertson JC Williams TL 《Medical reference services quarterly》2005,24(1):41-54
This article reports on a project that delivers distance training to rural health care professionals. Traveling to provide training on information-seeking skills to rural health professionals is time consuming and costly. In addition to face-to-face training, the University of South Alabama Biomedical Library's SAMNet project seeks to deliver multimedia training to rural health care professionals. The project uses information technology to package training courses combining PowerPoint slides and video instructions. This article describes the rationale, training module design and development, and the information technology and software used in the project. Multimedia packaged distance training courses provide a practical alternative to on-site training for rural health care professionals. It enables librarians to provide training without traveling long distance, thus saving time and money. Additionally, rural health care professionals may access the modules at a time convenient to them and proceed at a pace suitable to their learning style. 相似文献
176.
Following the report of the Lock-wood Committee (196S), the Northern Ireland government greatly expanded its higher education provision by creating two new institutions, the New University of Ulster, modelled on the English 'whitebrick' foundations of the period, and a direct grant institution for advanced further education, Ulster College. The first part of the article describes the reaction of the century-old Queen's University, Belfast and the new creations to the challenges of the Seventies, including the Ulster 'troubles', and to changing student demands and community needs.
NUU soon began to experience difficulties in recruiting students, both in quality and quantity, whereas UC, which became a polytechnic in 1975, succeeded beyond expectations. In 1982, after a review by the Chilver Committee but against its recommendation, the Westminster government decided, as an alternative to closing NUU, to merge it with the polytechnic to form the University of Ulster. The article discusses the merger, and the alternatives to it, seeking to distinguish between that which was accidental to the Ulster situation and that which might have more general application. It considers the problems of co-ordination, before and after the merger, including that of 'complementarity' between QUB and the University of Ulster. Finally it outlines the objectives of UU and the considerable progress made towards achieving them but sounds a cautionary note with regard to the social context in which it operates. 相似文献
NUU soon began to experience difficulties in recruiting students, both in quality and quantity, whereas UC, which became a polytechnic in 1975, succeeded beyond expectations. In 1982, after a review by the Chilver Committee but against its recommendation, the Westminster government decided, as an alternative to closing NUU, to merge it with the polytechnic to form the University of Ulster. The article discusses the merger, and the alternatives to it, seeking to distinguish between that which was accidental to the Ulster situation and that which might have more general application. It considers the problems of co-ordination, before and after the merger, including that of 'complementarity' between QUB and the University of Ulster. Finally it outlines the objectives of UU and the considerable progress made towards achieving them but sounds a cautionary note with regard to the social context in which it operates. 相似文献
177.
178.
Margaret Robertson Rex Walford Colin Barr Mike Morrish Frances Francis 《Cambridge Journal of Education》2000,30(3):421-438
The Land Use-UK Project was conducted with the support of teachers and students in schools throughout the UK. At the time they acted as surveyors of the landscape and, as well as mapping the land use, students recorded their perceptions of what they had seen together with their views for the future. Referred to now as the 'Views and Visions Project', these collective opinions from mostly whole class groups of students provide a database of 1287 responses. Along with the richness of discovery and meaning which the readings of these narratives of landscape experience provide, there have been many decisions to be made regarding the appropriate style and strategies needed for development of the data and interpretation and analysis of the research. This paper provides a reflection on the methodological decisions taken from the personal perspective of the authors as well as some critical comment on the limitations and possibilities of this essentially qualitative research approach. 相似文献
179.
ABSTRACTMuch research has focused on the introduction of information and communication technology (ICTs) into the lives of older people, but it has generally understood them as external factors who act as a sort of independent variable that impacts the seniors’ lives. There remains a dearth of empirical research into how aging and technology are co-constructed, namely, research that focuses on older people’s relationship to technology as a socio-technical network. We therefore contribute to this field by analyzing the development and establishment of a network in a geriatric hospital in Montevideo, Uruguay. Uruguay has been developing a one-tablet computer-per low-income-senior policy since 2015. In this research, we deployed a qualitative ethnographic research comprised of semi-structured interviews, jottings, and field notes where we explore the adoption of tablets within the corresponding actor-network. Our findings suggest that objectively, not only was the establishment of the sociotechnical network rife with complexities, disruptions, and fissures, but subjectively, seniors in the hospital were heavily influenced by their self-perception of the potentialities of ICTs. 相似文献
180.
Nicolette S. Richardson Derek Zwambag Kristen McFall David M. Andrews Diane E. Gregory 《Anatomical sciences education》2021,14(5):605-614
The synthetic cadaver is a high-fidelity model intended to replace or supplement other anatomy learning modalities. Academic attainment and student perceptions were examined in an undergraduate human anatomy course using a combination of plastic models and synthetic cadavers to learn lower body anatomy (“Experimental group”), compared to a Historical group who used only plastic models. Grades on an upper body test, for which both groups used only plastic models, were compared to ensure that no academic differences existed between groups (P = 0.7653). Students in the Experimental group performed better on the lower body test for which they used both plastic models and synthetic cadavers (median = 73.8% (95% CI: 72.0%-75.0%) compared to the Historical group (70.1% (95% CI: 68.3%-70.7%), P < 0.0001); however, less than half of students (49%) attributed this to the synthetic cadavers. Students' perception of laboratory resources (P < 0.0001) and learning experience (P < 0.0001) both improved with the addition of synthetic cadavers compared to using only plastic models, and 60% of students in the Experimental group agreed that the synthetic cadavers would be a key reason that they would choose that institution for undergraduate studies. This investigation showed improved student grades when plastic models and synthetic cadavers were combined, in addition to improved student perceptions of the learning experience. Results of the student questionnaires also suggested that although synthetic cadavers carry a notable up-front cost, they may be a useful recruitment tool for institutions. 相似文献