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101.
Several papers have appeared that have analyzed recent developments in the problem of processing, in a document retrieval system, queries expressed as Boolean expressions. The purpose of this paper is to continue that analysis. We shall show that the concept of threshold values resolves the problems inherent with relevance weights. Moreover, we shall explore possible evaluation mechanisms for retrieval of documents, based on fuzzy-set-theoretic considerations. 相似文献
102.
Avoiding versus seeking: the relationship of information seeking to avoidance, blunting, coping, dissonance, and related concepts. 总被引:1,自引:0,他引:1
Donald O Case James E Andrews J David Johnson Suzanne L Allard 《Journal of the Medical Library Association》2005,93(3):353-362
QUESTION: How have theorists and empirical researchers treated the human tendency to avoid discomforting information? DATA SOURCES: A historical review (1890-2004) of theory literature in communication and information studies, coupled with searches of recent studies on uptake of genetic testing and on coping strategies of cancer patients, was performed. STUDY SELECTION: The authors' review of the recent literature included searches of the MEDLINE, PsychInfo, and CINAHL databases between 1992 and summer of 2004 and selective, manual searches of earlier literature. Search strategies included the following subject headings and key words: MeSH headings: Genetic Screening/psychology, Decision Making, Neoplasms/diagnosis/genetics/psychology; CINAHL headings: Genetic Screening, Genetic Counseling, Anxiety, Decision Making, Decision Making/Patient; additional key words: avoidance, worry, monitoring, blunting, cancer. The "Related Articles" function in MEDLINE was used to perform additional "citation pearl" searching. MAIN RESULTS: The assumption that individuals actively seek information underlies much of psychological theory and communication practice, as well as most models of the information-seeking process. However, much research has also noted that sometimes people avoid information, if paying attention to it will cause mental discomfort or dissonance. Cancer information in general and genetic screening for cancer in particular are discussed as examples to illustrate this pattern. CONCLUSION: That some patients avoid knowledge of imminent disease makes avoidance behavior an important area for social and psychological research, particularly with regard to genetic testing. 相似文献
103.
104.
The Muslim athlete, whether living in a Muslim majority country or in a non-Muslim country, face unique challenges to faithfully follow one of the pillars of their faith - Ramadan - while attempting to maintain their participation in sports training and competition. There are conflicting reports on the effects of Ramadan on fitness and physical performance in general and in football in particular. In general, the impact of a brief daytime fast has minor effects on health or factors of physical fitness. Add physical training and now a new set of barriers to both performance and the observance of Ramadan begin to interact. Practising athletes have worked out strategies to cope with the rigors of Ramadan; strategies that have both physical (training modifications, dietary habits, rest and recovery) and emotional (patience, emotional preparations) domains. Carefully blending strategies like these can help the football player be true to their faith and follow the tenants of Ramadan hopefully, with a minimum of impact on their physical performance. In this context, science can help coaches improve their training plans and educate players with respect to the challenges presented by Ramadan to all levels of sports participation. 相似文献
105.
An attempt was made to formulate a theoretical framework of leadership forces in school organisations, which includes bureaucratic linkage, cultural linkage, tight coupling and loose coupling. Two instruments, the School Values Inventory (SVI) and the Teachers' School Life Questionnaire (TSLQ), were created and developed for this study to assess the administrative values espoused by principals and teachers' feelings about school life. Based on data collected from 1395 teachers from a randomly selected sample of 39 secondary schools in Hong Kong, the four scales of leadership forces in secondary schools were confirmed. Findings show that cultural linkage and loose coupling were the most effective leadership forces to bind people together within schools, tight coupling the next, but the use of bureaucratic linkage was controversial. 相似文献
106.
Abstract This paper proposes that excellence in teaching resides in a reflective, self‐critical, theoretically informed approach. A training programme for new teachers is used as an example of how the approach advocated can be put into practice. Evidence is presented which indicates that academic teachers pursuing such an approach develop conceptions of teaching which can contribute to improved practice; and which may also contribute to changing thinking about teaching and learning in departments. It is argued that encouraging reflective pedagogy has the potential of engaging academics in making the cultural changes necessary to professionalise and enhance the status of teaching. Finally, it is suggested that, although the methodology used by the inspection teams of the Teaching Quality Assessment (TQA) is problematic, the impetus provided can be used as an opportunity to explore and establish creative and worthwhile ways of improving the quality of teaching. 相似文献
107.
108.
Martin J. Ward Donald Kester Kamiar Kouzekanani 《Journal of Education for Students Placed at Risk》2013,18(2):189-200
This research examined the impact of preservice teachers delivering individualized instruction of basic computer skills to at-risk, ethnic minority alternative high school students in an urban school district in South Texas. The alternative high school students' achievement of computer skills, motivation to use computers, and self-efficacy as current and future students was assessed. University preservice teachers taught a keyboard/computer skills curriculum developed specifically for this collaborative teaching and learning project in 10 1-hr-long sessions 2 times a week over a 5-week period. A series of 2 by 2 repeated measures analysis of variance showed achievement gains as measured by a survey instrument within the treatment group. This small, preliminary study supports the use of preservice teachers in the delivery of an individualized, computer-based program of instruction for at-risk students. 相似文献
109.
Donald S. Blumenfeld‐Jones 《Teaching Education》2013,24(2):45-50
“If democracy is to become a way of life in contemporary North American life, we certainly need to have schools with strong democratic commitments... if we are going to have democratic schools, we need teachers with the knowledge, skills, and attitudes necessary for developing sustained democratic ways of educating... if we are going to seek and sustain democratic teachers, we will also need... democratic teacher educators...” (Novak, 1994, p. ix) 相似文献
110.
Peggy A. Ertmer Donald A. Stepich Cindy S. York Ann Stickman Xuemei Wu Stacey Zurek Yuksel Goktas 《Performance Improvement Quarterly》2008,21(1):17-42
This study examined how instructional design (ID) experts used their prior knowledge and previous experiences to solve an ill‐structured instructional design problem. Seven experienced designers used a think‐aloud procedure to articulate their problem‐solving processes while reading a case narrative. Results, presented in the form of four assertions, showed that experts (1) narrowed the problem space by identifying key design challenges, (2) used an amalgam of knowledge and experience to interpret the problem situation, (3) incorporated a mental model of the ID process in their problem analyses, and (4) came to similar conclusions about how to respond to the situation, despite differences in their initial conceptualizations. Implications for educating novice instructional designers are discussed. 相似文献