The Strong African American Families Program: translating research into prevention programming     

Brody GH  Murry VM  Gerrard M  Gibbons FX  Molgaard V  McNair L  Brown AC  Wills TA  Spoth RL  Luo Z  Chen YF  Neubaum-Carlan E 《Child development》2004,75(3):900-917

A randomized prevention trial contrasted families who took part in the Strong African American Families Program (SAAF), a preventive intervention for rural African American mothers and their 11-year-olds, with control families. SAAF is based on a contextual model positing that regulated, communicative parenting causes changes in factors protecting youths from early alcohol use and sexual activity. Parenting variables included involvement-vigilance, racial socialization, communication about sex, and clear expectations for alcohol use. Youth protective factors included negative attitudes about early alcohol use and sexual activity, negative images of drinking youths, resistance efficacy, a goal-directed future orientation, and acceptance of parental influence. Intervention-induced changes in parenting mediated the effect of intervention group influences on changes in protective factors over a 7-month period.  相似文献   

Eliciting and mapping tacit knowledge on teamwork success of Six Sigma teams     

Tracy X P?ZouEmail author  W B?Lee 《知识管理研究与实践》2016,14(3):246-255

This study aims to elicit and map tacit knowledge on teamwork success as a lens to examine variations in team performance. A new approach based on narrative simulations and the traditional similarity ratings were adopted with Six Sigma teams in an international manufacturing company. Convergence in the knowledge maps among team members and that between teams and the management of the company have been examined. Both approaches revealed differences in high performance teams and average teams. The narrative simulations elicited richer knowledge, provided a second layer with contexts to a better understanding of team knowledge, and generated more actionable suggestions for team development. Misconceptions in some Six Sigma teams were also identified, which provide insights for team training and development. The study demonstrates the application of narratives and sensemaking theories to the elicitation of team knowledge in rich contexts and multiple layers.  相似文献   

“Fixing” the “Facts”: flexible learning as policy invention     

Katherine Nicoll 《高等教育研究与发展》1998,17(3):291-304

This article examines the contemporary move within the Australian university context towards flexible learning. Drawing on the notions of policy as text and discourse, it is suggested that policies seek to provide authoritative meanings for practices they promote — to fix the facts about which they speak. The article explores the emergence of discourses of flexible learning as effects of policy texts and changes within the social formation. These discourses resonate with those already operating within the social formation, and in this may have effects other than those immediately apparent. An initial analysis of Australian higher education policy texts indicates a contemporary diversification of the use of the metaphor of flexibility as a discursive strategy through which mechanisms of governance can be intensified.  相似文献   

Optofluidic planar reactors for photocatalytic water treatment using solar energy     

Lei L  Wang N  Zhang XM  Tai Q  Tsai DP  Chan HL 《Biomicrofluidics》2010,4(4):43004

Optofluidics may hold the key to greater success of photocatalytic water treatment. This is evidenced by our findings in this paper that the planar microfluidic reactor can overcome the limitations of mass transfer and photon transfer in the previous photocatalytic reactors and improve the photoreaction efficiency by more than 100 times. The microreactor has a planar chamber (5 cm×1.8 cm×100 μm) enclosed by two TiO(2)-coated glass slides as the top cover and bottom substrate and a microstructured UV-cured NOA81 layer as the sealant and flow input∕output. In experiment, the microreactor achieves 30% degradation of 3 ml 3×10(-5)M methylene blue within 5 min and shows a reaction rate constant two orders higher than the bulk reactor. Under optimized conditions, a reaction rate of 8% s(-1) is achieved under solar irradiation. The average apparent quantum efficiency is found to be only 0.25%, but the effective apparent quantum efficiency reaches as high as 25%. Optofluidic reactors inherit the merits of microfluidics, such as large surface∕volume ratio, easy flow control, and rapid fabrication and offer a promising prospect for large-volume photocatalytic water treatment.  相似文献   

A combined social action, mixed methods approach to vocational guidance efficacy research     

Justin C. Perry 《International Journal for Educational and Vocational Guidance》2009,9(2):111-123

This article proposes a social action, mixed methods approach to verifying the efficacy of vocational guidance programs. Research strategies are discussed in the context of how the processes and purposes of efficacy research have been conceptualized and studied in vocational psychology. Examples of how to implement this approach in future efficacy research are provided.  相似文献   

只此一次     

Justin Bieber  小狐 《英语辅导》2010,(4)

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Concept Mapping Assessment of Media Assisted Learning in Interdisciplinary Science Education     

Steffen Schaal  Franz X. Bogner  Raimund Girwidz 《Research in Science Education》2010,40(3):339-352

Acquisition of conceptual knowledge is a central aim in science education. In this study we monitored an interdisciplinary hypermedia assisted learning unit on hibernation and thermodynamics based on cooperative learning. We used concept mapping for the assessment, applying a pre-test/post-test design. In our study, 106 9th graders cooperated by working in pairs (n = 53) for six lessons. As an interdisciplinary learning activity in such complex knowledge domains has to combine many different aspects, we focused on long-term knowledge. Learners working cooperatively in dyads constructed computer-supported concept maps which were analysed by specific software. The data analysis encompassed structural aspects of the knowledge corresponding to a target reference map. After the learning unit, the results showed the acquisition of higher-order domain-specific knowledge structures which indicates successful interdisciplinary learning through the hypermedia learning environment. The benefit of using a computer-assisted concept mapping assessment for research in science education, and in science classrooms is considered.  相似文献   

Implementation of concept mapping to novices: reasons for errors,a matter of technique or content?     

Cathérine Conradty  Franz X. Bogner 《Educational studies》2010,36(1):47-58

Concept mapping is discussed as a means to promote meaningful learning and in particular progress in reading comprehension skills. Its increasing implementation necessitates the acquisition of adequate knowledge about frequent errors in order to make available an effective introduction to the new learning method. To analyse causes of errors, 283 A‐level sixth graders produced concept maps about two differently complex subject matter lessons, we implemented in a pre‐lesson. We defined six types of errors and analysed the distribution and contingency tables in both subject matters. Students in general produced more complex concept maps in the context of the easier subject matter (A) than that of the difficult content (B). Whereas in the former errors simply indicated knowledge gaps, in the latter they often reflected technical misconceptions. The occurrence of a content‐dependent technical error in (B) pointed to a cognitive overload, since the more difficult content is hypothesised to cause higher intrinsic load. From this following, concept mapping could provoke an instructional enrichment by additionally revealing specific knowledge gaps.  相似文献   

Discrete-time stochastic impulsive BAM neural networks with leakage and mixed time delays: An exponential stability problem     

C. Sowmiya  R. Raja  Jinde Cao  X. Li  G. Rajchakit 《Journal of The Franklin Institute》2018,355(10):4404-4435

In this paper, the stability analysis of impulsive discrete-time stochastic BAM neural networks with leakage and mixed time delays is investigated via some novel Lyapunov–Krasoviskii functional terms and effective techniques. For the target model, stochastic disturbances are described by Brownian motion. Then the result is further extended to address the problem of robust stability of uncertain discrete-time BAM neural networks. The conditions obtained here are expressed in terms of Linear Matrix Inequalities (LMIs), which can be easily checked by MATLAB LMI control toolbox. Finally, few numerical examples are presented to substantiate the effectiveness of the derived LMI-based stability conditions.  相似文献   

Females With Visual Impairments in Physical Education: Exploring the Intersection Between Disability and Gender Identities     

Justin A. Haegele  Amanda Yessick  Xihe Zhu 《Research quarterly for exercise and sport》2018,89(3):298-308

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