Reactor dynamics and control : Lynn E. Weaver. 6×9 in., diagrams. New York,American Elsevier, 1968. Price, $15.00.     

Charles Slivinsky 《Journal of The Franklin Institute》1971

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Changing the environment to promote health-enhancing physical activity     

Foster C  Hillsdon M 《Journal of sports sciences》2004,22(8):755-769

Supportive environments have been used to change and influence health behaviours like smoking. While psychological and ecological theories and models demonstrate the possible influences of the environment on health-enhancing physical activity (HEPA), little is known about the effectiveness of the environmental interventions. This paper presents the results of a systematic review of studies that used environmental interventions to increase health-enhancing physical activity. Two groups of studies were found, studies that changed the physical environment by creating new HEPA facilities, policies and supporting mechanisms, and studies that used the elements of the environment as an active or sedentary 'point of choice', via educational materials to promote stair use. Environmental change studies showed a small increase on HEPA behaviour, but the relative impact of environment changes was not evaluated. A number of before and after studies have observed a weak effect of a simple environmental change to stimulate stair climbing while travelling or shopping. Current national policy has embraced the environment as an option for promoting health-enhancing physical activity, especially active travel, in spite of the lack of effectiveness data. It is recommended that existing or planned public health environment and HEPA initiatives should use appropriate evaluation methods to assess their efficacy and effectiveness. Further developmental research into the nature of the relationship of the environment to particular HEPA behaviours is strongly recommended before developing new environmental interventions.  相似文献   

Physical activity and executive control: implications for increased cognitive health during older adulthood     

Hillman CH  Belopolsky AV  Snook EM  Kramer AF  McAuley E 《Research quarterly for exercise and sport》2004,75(2):176-185

Electrocortical and behavioral responses of low, moderate, and high physically active older adults were compared with a younger control group on neutral and incompatible conditions of a flankers task. Compared to younger adults, high and moderate active older adults exhibited increased event-related potentials component P3 amplitude for the incompatible condition at the frontal electrode site. For the neutral condition, only low active older adults exhibited decreased amplitude at the central-parietal site, compared to younger adults. P3 latency revealed the longest latencies for low active older adults, followed by moderate active, high active, and younger adults, respectively. Reaction time (RT) data revealed that younger adults exhibited faster RT compared to all three older groups. Results suggest that physical activity may improve executive control function in older adults by affecting the distribution of P3 amplitude, which has been related to memory and attentional processes, and by decreasing P3 latency, which relates to the speed of cognitive processing.  相似文献   

Research on university presses: An overview of UK university presses     

Rachel?Hardy  Charles?OppenheimEmail author 《Publishing Research Quarterly》2004,20(2):18-31

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Attitude change as a function of the number of scales administered     

Nicholas F. Rayder  Charles O. Neidt 《Educational technology research and development : ETR & D》1964,12(4):402-412

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Physical ultrasonics, : Robert T. Beyer and Stephen V. Letcher. 378 pages,diagrams, 6×9 in. New York,Academic Press, 1969. Price, $18.50.     

Charles J. Montrose 《Journal of The Franklin Institute》1971

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Using focus groups to guide development of a public health Web site     

Henner TA  Charles P 《Medical reference services quarterly》2002,21(4):15-22

This paper explores a project funded through the National Network of Libraries of Medicine to enhance effective use of the Internet by public health professionals. The processes and outcome of an effort to develop a statewide Web site for public health professionals are described. A series of focus groups was conducted as a preliminary data-gathering tool to evaluate the information needs of the target population. Results of the focus group provided a valuable framework upon which to build a successful schema for Web site development.  相似文献   

Reduced knowledge of results frequency enhances error detection     

Bruechert L  Lai Q  Shea CH 《Research quarterly for exercise and sport》2003,74(4):467-472

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Making sense of autoimmune and rheumatic disorders at the reference desk     

Fikar CR 《Medical reference services quarterly》2003,22(4):13-19

This paper discusses concepts and terminology of some aspects of the autoimmune and rheumatic disorders as related to medical reference work. Details of anatomic, biochemical, and pathologic processes are not discussed. Knowledge of the specific terminology involved in this area may help to ensure a good approach to developing prudent strategies for database searching of the medical literature and, therefore, is reviewed. MeSH thesaurus terms are shown and textword synonyms are presented that provide tools for thorough searching techniques. Commonly used medical jargon as well as older terminology for this area is also explained. Examples of specific search strategies are illustrated.  相似文献   

PELICAN: a pricing mechanism for the electronic distribution of materials to the higher education community     

Rachel Hardy  Charles Oppenheim  Iris Rubbert 《Learned Publishing》2001,14(2):93-96

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