Time series analysis of knowledge of results effects during motor skill acquisition     

J R Blackwell  R W Simmons  J A Spray 《Research quarterly for exercise and sport》1991,62(1):10-17

Time series analysis was used to investigate the hypothesis that during acquisition of a motor skill, knowledge of results (KR) information is used to generate a stable internal referent about which response errors are randomly distributed. Sixteen subjects completed 50 acquisition trials of each of three movements whose spatial-temporal characteristics differed. Acquisition trials were either blocked, with each movement being presented in series, or randomized, with the presentation of movements occurring in random order. Analysis of movement time data indicated the contextual interference effect reported in previous studies was replicated in the present experiment. Time series analysis of the acquisition trial data revealed the majority of individual subject response patterns during blocked trials were best described by a model with a temporarily stationary, internal reference of the criterion and systematic, trial-to-trial variation of response errors. During random trial conditions, response patterns were usually best described by a "White-noise" model. This model predicts a permanently stationary, internal reference associated with randomly distributed response errors that are unaffected by KR information. These results are not consistent with previous work using time series analysis to describe motor behavior (Spray & Newell, 1986).  相似文献   

IRIS: Integrated Risk Information System database     

Bronson RJ 《Medical reference services quarterly》1991,10(2):73-85

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Poster sessions-detroit annual meeting, 1990     

Braude RM 《Bulletin of the Medical Library Association》1990,78(1):71

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Serials standards work: the next frontier     

Tseng SC  Arcand JL  Brugger JM  Finn M  Olson AJ  Somers S 《Library resources & technical services》1990,34(2):139-157

Serials, one of the more complicated areas of library technical endeavors, has lacked the benefit of standards for a long time. Even now, with standards beginning to be available, the majority of institutions are not working within standard serials formats. A survey to determine the use of serials standards in libraries was conducted in 1988 by the American Library Association, Resources and Technical Services Division, Serials Section, Committee to Study Serials Standards. In the spring of 1988 a survey was sent to a group encompassing the Association of Research Libraries members, CONSER participants, United States Newspaper Program participants, Microform Project libraries, and some vendors and librarians who attended the Committee meetings on a regular basis. The survey questionnaire assessed the current level of serials standards awareness of librarians and vendors. Topics included the type of serials systems used, standards relevant to serials control and union listing and whether or not they are implemented, types and levels of training staff received in the application of standards, benefits of the standards, and areas where standards are most needed.  相似文献   

Normative behavior and information: The social aspects of information access     

Gary Burnett  Paul T. Jaeger  Kim M. Thompson 《Library & information science research》2008,30(1):56-66

Information access is central to library and information science, yet explorations of its conceptual nature have been limited. Given the importance of information access to the discipline, there is a need for research to create a better understanding of the concept and its many roles in all activities and behaviors related to information. Drawing on the theoretical work of Elfreda Chatman, this article proposes that the study of information access can be facilitated through the recognition and examination of the physical, intellectual, and social aspects of information access. These types of access are examined through three case studies in terms of different information behaviors and contexts, with a particular focus on the importance of social access. The article also discusses the future roles that considerations of social access can play in research and theory.  相似文献   

From the ground up: information needs of nurses in a rural public health department in Oregon          下载免费PDF全文

Anne M. Turner  Zoe Stavri  Debra Revere    Rita Altamore 《Medical Library and Historical Journal》2008,96(4):335-342

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彻底简化IT     

David M.Upton  尚丹 《信息系统工程》2008,(10)

如何实现"简化IT"的战略,这是困扰很多企业,尤其是CIO的一个重要问题。本文以日本新生银行的例子来诠释如何彻底简化IT。中世纪哲人William of Ock- ham说过,理论应该尽可能的简单。同样的原则适用于企业IT系统:它们按照尽可能少的标准  相似文献   

Rates and psychological effects of exposure to family violence among Sri Lankan university students     

Haj-Yahia MM  de Zoysa P 《Child abuse & neglect》2008,32(10):994-1002

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On the problem of determining a citation index of publications by Kazakh scientists     

V. A. Frolova  S. K. Khasenova  T. Sh. Kubieva  O. A. Rog 《Scientific and Technical Information Processing》2008,35(2):104-106

This paper discusses the evaluation of scientific activity with the help of some scientometric indices, in particular, a citation index. The information massif of the bibliographic database of citations to domestic publications of Kazakh authors is statistically described.  相似文献   

The role of metadata in the creation and application of information resources on the properties of substances and materials     

A. O. Yerkimbaev  V. Yu. Zitserman  G. A. Kobzev 《Scientific and Technical Information Processing》2008,35(6):247-255

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