三个IT厂商酿成的惨痛教训     

Techtarget Todd R. Weiss 《信息系统工程》2005,(3):16

ｋｅｙｓｔｏｎｅ公司长期停滞的ＥＲＰ项目终于宣告成功，　系统将 １３０ 个厂房，全美国２０００ 多员工连接在一起。回首ｋｅｙｓｔｏｎｅ 信息化历程，其经验教训值得我们深思。  相似文献   

One hundred and fifty years of sprint and distance running – Past trends and future prospects     

Martin Weiss  Alexandra Newman  Ceri Whitmore  Stephan Weiss 《European Journal of Sport Science》2016,16(4):393-401

Sprint and distance running have experienced remarkable performance improvements over the past century. Attempts to forecast running performances share an almost similarly long history but have relied so far on relatively short data series. Here, we compile a comprehensive set of season-best performances for eight Olympically contested running events. With this data set, we conduct (1) an exponential time series analysis and (2) a power-law experience curve analysis to quantify the rate of past performance improvements and to forecast future performances until the year 2100. We find that the sprint and distance running performances of women and men improve exponentially with time and converge at yearly rates of 4% ± 3% and 2% ± 2%, respectively, towards their asymptotic limits. Running performances can also be modelled with the experience curve approach, yielding learning rates of 3% ± 1% and 6% ± 2% for the women's and men's events, respectively. Long-term trends suggest that: (1) women will continue to run 10–20% slower than men, (2) 9.50 s over 100 m dash may only be broken at the end of this century and (3) several middle- and long-distance records may be broken within the next two to three decades. The prospects of witnessing a sub-2 hour marathon before 2100 remain inconclusive. Our results should be interpreted cautiously as forecasting human behaviour is intrinsically uncertain. The future season-best sprint and distance running performances will continue to scatter around the trends identified here and may yield unexpected improvements of standing world records.  相似文献   

Letter from the Editors     

Michael J. Weiss  Julie Edmunds  Stephanie Jones  Fatih Unlu  Beth Boulay  Luke Miratrix 《Journal of research on educational effectiveness》2020,13(1):1-2

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Use of laptop computers in an academic medical library     

Atlas MC  Garza F  Hinshaw R 《Medical reference services quarterly》2007,26(2):27-36

Who borrows laptop computers in an academic health sciences library? Why do they choose to check out laptops? In a survey, laptop computer users responded that the laptops were used most frequently to do class-related work. Laptops were most often checked out because they could be taken to a quiet area of the library or to where the user had more room to work. The majority of such borrowers were satisfied or very satisfied with the laptops and the service from the library. The majority of those completing the survey were medical school students and graduate students. The circulation of laptop computers at this academic health sciences library is a very successful and popular program.  相似文献   

Enhancement of Anatomical Education Using Augmented Reality: An Empirical Study of Body Painting     

Roghayeh Barmaki  Kevin Yu  Rebecca Pearlman  Richard Shingles  Felix Bork  Greg M. Osgood  Nassir Navab 《Anatomical sciences education》2019,12(6):599-609

Students in undergraduate premedical anatomy courses may experience suboptimal and superficial learning experiences due to large class sizes, passive lecture styles, and difficult-to-master concepts. This study introduces an innovative, hands-on activity for human musculoskeletal system education with the aim of improving students’ level of engagement and knowledge retention. In this study, a collaborative learning intervention using the REFLECT (augmented reality for learning clinical anatomy) system is presented. The system uses the augmented reality magic mirror paradigm to superimpose anatomical visualizations over the user’s body in a large display, creating the impression that she sees the relevant anatomic illustrations inside her own body. The efficacy of this proposed system was evaluated in a large-scale controlled study, using a team-based muscle painting activity among undergraduate premedical students (n = 288) at the Johns Hopkins University. The baseline knowledge and post-intervention knowledge of the students were measured before and after the painting activity according to their assigned groups in the study. The results from knowledge tests and additional collected data demonstrate that the proposed interactive system enhanced learning of the musculoskeletal system with improved knowledge retention (F_(10,133) = 3.14, P < 0.001), increased time on task (F_(1,275) = 5.70, P < 0.01), and a high level of engagement (F_(9,273) = 8.28, P < 0.0001). The proposed REFLECT system will be of benefit as a complementary anatomy learning tool for students.  相似文献   

Predictors of intrinsic motivation among adolescent students in physical education     

Ferrer-Caja E  Weiss MR 《Research quarterly for exercise and sport》2000,71(3):267-279

This study examined the relationships among social factors, individual differences, intrinsic motivation, and effort and persistence in the physical education context using cognitive evaluation theory as a framework. Female (n = 201) and male (n = 206) high school students completed measures of motivational climate, teaching style, perceived competence, self-determination, goal orientations, and intrinsic motivation. Teachers rated the students on effort and persistence in the class activities. Hypothesized relationships among the variables were tested using structural equation modeling. Results revealed that perceived competence and goal orientations directly predicted intrinsic motivation and mediated the effects of motivational climate and teaching style on intrinsic motivation. Intrinsic motivation directly predicted effort and persistence. Task goal orientation mediated the effects of learning climate on perceived competence and self-determination. The strongest predictors of intrinsic motivation and effort and persistence were task goal orientation perceived competence, and learning climate.  相似文献   

Pandora's Hope: Essays on the Reality of Science Studies     

Felix Stalder 《The Information Society》2000,16(3):245-247

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The Network Paradigm: Social Formations in the Age of Information     

Felix Stalder 《The Information Society》1998,14(4):301-308

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VALIDATION OF THE SOCIAL AND EMOTIONAL HEALTH SURVEY FOR FIVE SOCIOCULTURAL GROUPS: MULTIGROUP INVARIANCE AND LATENT MEAN ANALYSES     

Sukkyung You  Michael Furlong  Erika Felix  Meagan O'Malley 《Psychology in the schools》2015,52(4):349-362

Social‐emotional health influences youth developmental trajectories and there is growing interest among educators to measure the social‐emotional health of the students they serve. This study replicated the psychometric characteristics of the Social Emotional Health Survey (SEHS) with a diverse sample of high school students (Grades 9–12; N = 14,171), and determined whether the factor structure was invariant across sociocultural and gender groups. A confirmatory factor analysis (CFA) tested the fit of the previously known factor structure, and then structural equation modeling was used to test invariance across sociocultural and gender groups through multigroup CFAs. Results supported the SEHS measurement model, with full invariance of the SEHS higher‐order structure for all five sociocultural groups. There were no moderate effect size or higher group differences on the overall index for sociocultural or gender groups, which lends support to the eventual development of common norms and universal interpretation guidelines.  相似文献   

Reputation disparity in teaching and research productivity and rewards in the context of consequences of institutionalization of Publish or Perish culture in academia     

Samuel Akande Bello  Felix Chimeziri Azubuike  Olumuyiwa A. Akande 《Higher Education Quarterly》2023,77(3):574-584

The reputation disparity between teaching and research has stirred up an unending debate. The age-long notion that teaching and research overlap has become a controversial issue in academia. Consequences of the institutionalization of Publish OR Perish (POP) abound in the literature. This paper investigates the reputations disparity between teaching and research productivity and the rewards for these academic activities. It explores which, out of teaching activities and research publications receive higher or less attention and rewards. Relevant existing literature was reviewed to establish the institutionalization of POP and its consequences of the reputations disparity between teaching and research and its adverse effects on these activities. Evidence from the literature reviewed reveals the existence of POP reputation disparity as part of its consequences. A key finding is that teaching activities are insignificant and unrewarded as research publications. Neither the effectiveness nor the number of teaching loads counts like the numbers of publications.  相似文献