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Studying complex systems is increasingly important in many science domains. Many features of complex systems make it difficult for students to develop deep understanding. Our previous research indicated that a function‐centered conceptual representation is part of the disciplinary toolbox of biologists, suggesting that it is an appropriate representation to help students develop deep understanding. This article reports on the results of two experiments that investigate how hypermedia using a conceptual representation influences pre‐service teachers' and middle school students' learning of a complex biological system, the human respiratory system. We designed two versions of instructional hypermedia based on the structure–behavior‐function conceptual representation. One hypermedia was function‐centered which emphasized the function and behavior of the system, whereas the other was focused on the structure of the system. We contrasted the instructional effectiveness of these two alternative conceptual representations. The results of both studies indicated that participants using the function‐centered hypermedia developed deeper understanding than those using the structure‐centered version. This proof‐of‐concept study suggests that the function‐centered conceptual representation is a powerful way to promote complex systems understanding. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 46: 1023–1040, 2009 相似文献
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This study investigated the relationships among demographics, parent and peer attachment, school satisfaction, and student engagement behavior in a 1‐year longitudinal study of secondary‐school students. Statistically significant cross‐sectional differences in school satisfaction were observed, based on grade, but not on race, gender, or socioeconomic status. Level of school satisfaction did not moderate the relationships between parent and peer satisfaction and negative student engagement behaviors at Time 2 (controlling for Time 1). School satisfaction did account for significant incremental variance across all levels of parent and peer attachment relationships, although predicting a larger proportion of variance for withdrawal behavior than for resistance/aggression behavior. Adolescents' appraisals of their school satisfaction appear to be an independent predictor of their school engagement behaviors, regardless of the quality of their parent or peer attachment relationships. Limitations of the study as well as implications for future research and educational practice are discussed. © 2010 Wiley Periodicals, Inc. 相似文献
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Knowledge Management Research & Practice - Despite research on how multinational corporations (MNCs) manage knowledge transfer across national borders, little is known about the implications of... 相似文献
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The main aim of this study was to assess the separate and combined effects of exercise and nasal splinting on static and dynamic measures of nasal airflow. In a randomized crossover design, 12 healthy participants (6 men, 6 women) performed static and dynamic spirometric nasal airflow assessment tests, with or without nasal splinting (Breathe-Right?), before and after a maximal oxygen uptake (VO 2max ) treadmill test. At least 7 days later, the V O 2max and nasal airflow tests were repeated. The results showed that the measured variables were not significantly different with and without nasal splinting. We conclude that the absence of significantly enhanced nasal patency observed for nasal splinting and after exercise suggest that these factors have a minimal impact on nasal airflow volume and rate. 相似文献
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Cindy Crain Margaret Eisenhart John McLaughlin 《Research quarterly for exercise and sport》2013,84(3):231-236
Abstract Little evidence exists to assess the effects of dance training on special populations. Research in this field has relied on pretest-posttest methods for gathering data. While such data gathering methods may be appropriate for particular research problems, alone they may be inadequate for broad-based, exploratory investigations of programs and effects. The present study is an example of a multiple measurement approach that uses eight measurements, in combination, to answer four research questions regarding the physical and social effects that occur when a group of educable mentally retarded adolescents is exposed to a 10-week dance program. The findings revealed that four students showed improvement in both social and physical behaviors, seven students showed improvement in either social or physical behaviors, and two students showed no improvement. There was no evidence of a “transfer effect” due to participation in the program, and some students' behaviors were affected by external factors. The authors found the approach useful for identifying multiple effects and generating hypotheses for further study. 相似文献
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Cindy Ann Smith Lara Willox Courtney Olds 《Mentoring & Tutoring: Partnership in Learning》2017,25(3):369-390
The field of mentoring includes a broad base of stakeholders, such as researchers and practitioners who implement mentoring programs. The research-to-practice gap is an ongoing area of concern in many fields of social science including mentoring. One reason for this is that researchers and practitioners often operate in isolation. Technology is playing an ever-increasing role in the professional lives of practitioners and researchers, therefore, this study explored the engagement of both groups through the YOUTHMENTORING list serve; a resource provided by the University of Illinois-Chicago. Through a comprehensive qualitative study of list serve content, connections, and engagement it was found that the YOUTHMENTORING list serve promoted collaboration among stakeholders. Members found the resource to be valuable to their practice. Implications for the field and future research are discussed. 相似文献
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ABSTRACT This study aims to establish an understanding of (a) health-care professionals’ knowledge and attitudes; and (b) tools used to assess sexuality in older people living with/(out) dementia and those identified as lesbian, gay, bisexual, trans, or intersex (LGBTI) individuals. An integrative review of the literature, as registered on the PROSPERO international Prospective Register of Systematic Reviews (CRD42019129589), was conducted. A comprehensive and systematic literature search was performed for the period between 2009 to 2019 across eight electronic databases: CINAHL, PubMed, MEDLINE, Web of Science, Cochrane library, Embase, PsycINFO, and Scopus, together with a manual search of reference lists. Screening of titles, abstracts, and full texts of eligible studies plus quality appraisal (using the Mixed Methods Appraisal Tool) were independently conducted by two reviewers with disagreements resolved via discussion with a third reviewer. Nineteen articles were reviewed with three themes identified from the synthesis: 1) varying knowledge and attitudes amongst health-care professionals; 2) needs for professional development opportunities and support from workplace and 3) lack of recent validated tools to assess knowledge and attitudes. Health-care professionals’ knowledge and attitudes toward sexuality in older people living with/(out) dementia and those identified as LGBTI individuals are varying. Sexuality education and professional development training are needed to enhance their knowledge and attitudes and build skills in order to manage sexuality concerns. Current assessment tools are inadequate, highlighting the need for an appropriate assessment tool to be developed. 相似文献
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OBJECTIVE: We investigated the possible reciprocal relationship between victimization experiences and psychological functioning by assessing abuse experiences in childhood, adolescence, and during a 2-month follow-up period. METHOD: At the beginning of the study (Time 1), abuse histories, trauma and depressive symptoms, and interpersonal functioning were assessed in 551 college women. Subsequent victimization experiences and psychological outcomes were assessed at the follow-up (Time 2). RESULTS: Path analyses indicated that verbal abuse by the mother and father were predictive of various psychological outcomes as measured at Time 1 and emerged as the only significant predictors of adolescent dating violence. Adolescent dating violence subsequently predicted the experience of dating violence during the 2-month follow-up period. Paternal physical abuse predicted adolescent sexual victimization which subsequently predicted all symptom measures at Time 1. Conversely, the experience of adolescent physical dating violence was not predictive of any of the symptom measures at Time 1. For those women who experienced dating violence during the follow-up, however, the severity of their abusive experiences was related to both depression and interpersonal problems assessed at Time 2. In comparison, for those women who experienced sexual victimization during the follow-up period, the severity of their abusive experiences was related to trauma symptoms. Interpersonal problems emerged as both an aftereffect of adolescent sexual victimization experience and a predictor of a subsequent sexual victimization experience during the follow-up. CONCLUSIONS: Given that emotional abuse emerged as a predictor of adolescent dating violence and psychological outcomes, researchers and clinicians need to continue to explore this problem. Further, it is important to assess how interpersonal problems contribute to the risk of subsequent sexual victimization and to try to break the cycle between adolescent abuse experiences and subsequent physical and sexual assaults. 相似文献