Book reviews     

Benjamin Levin  Carol Nash  Jan Sundin  Jane Gaskell  Chad Gaffield 《Interchange》1993,24(4):447-458

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Publishers publicity and bibliographic databases     

Michele Benjamin 《Learned Publishing》1988,1(4):162-163

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A Service to Students     

Benjamin Quarles 《College Teaching》2013,61(2)

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School-based prevention: effects on obesity and physical performance after 4 years     

Graf C  Koch B  Falkowski G  Jouck S  Christ H  Staudenmaier K  Tokarski W  Gerber A  Predel HG  Dordel S 《Journal of sports sciences》2008,26(10):987-994

Juvenile obesity is increasing worldwide. Preventive strategies are warranted. The school-based Children's Health Interventional Trial (the CHILT Project) combines health education and physical activity for children. The effect on obesity and physical performance was studied after four years in 12 primary schools compared with five control schools. Anthropometric data were recorded. Physical performance was measured by a coordination test for children (balancing backwards, one-legged obstacle jumping, lateral jumping, sideways movements) and a 6-min run (endurance). No difference in the prevalence and incidence of overweight and obesity was found between the intervention and control schools before and after the intervention. Remission of overweight was higher in the intervention schools (23.2 vs. 19.2%), but not significant. An increase in coordination related to lateral jumping and balancing backwards was apparent in the intervention schools (30.6, s = 10.8 vs. 26.1, s = 10.8, P = 0.005; 21.8, s = 11.8 vs. 19.4, s = 11.7, P = 0.007), and the increase in endurance performance tended to be higher in intervention schools (100.8, s = 122.7 vs. 92.8, s = 126.0, P = 0.055), adjusted for age, sex, baseline test result, and body mass index at final examination. Therefore, preventive intervention in primary school offers the possibility to improve physical performance in children. The prevalence and incidence of obesity were not affected.  相似文献   

THE RELATION OF BIBLICAL COURSES TO THE GENERAL PROGRAM OF RELIGIOUS CULTURE IN THE COLLEGE     

Benjamin T. Marshall  B.D.∗ 《Religious education (Chicago, Ill.)》2013,108(5):314-319

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The beginning of thumbsucking     

L S Benjamin 《Child development》1967,38(4):1065-1078

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Match activity and physiological load during a clay-court tennis tournament in elite female players     

Fernandez-Fernandez J  Sanz-Rivas D  Fernandez-Garcia B  Mendez-Villanueva A 《Journal of sports sciences》2008,26(14):1589-1595

The aim of this study was to determine the match activity and physiological demands of women's tennis during a 3-day clay-court tennis tournament. The activity profile of eight players was determined by filming each competitive match with video cameras. Metabolic-perceptual measurements--blood samples and individual ratings of perceived exertion (RPE)--were taken while the players were sitting during permitted changeover breaks in play. The activity profile of the players was as follows: strokes per rally, 2.5 +/- 1.6; rally duration, 7.2 +/- 5.2 s; rest time between rallies, 15.5 +/- 7.3 s; effective playing time, 21.6 +/- 6.1%; work-to-rest ratio, 1:2.1. Blood lactate concentration [2.2 +/- 0.9 mmol x l(-1) (n = 50) vs. 2.2 +/- 0.7 mmol x l(-1) (n = 48)] and RPE values [12.2 +/- 2.4 (n = 57) vs. 12 +/- 2.3 (n = 57)] were not significantly different (P = 0.65-0.78) between service and return games. The results highlight the importance of taking these factors (i.e. activity patterns and physiological profile) into account when planning training strategies for competitive females players. As such, tennis training regimes should be adapted to the specific demands imposed by match-play in female players on a clay-court surface.  相似文献   

Integrated dynamic wet spinning of core-sheath hydrogel fibers for optical-to-brain/tissue communications     

Guoyin Chen  Gang Wang  Xinrong Tan  Kai Hou  Qingshuo Meng  Peng Zhao  Shun Wang  Jiayi Zhang  Zhan Zhou  Tao Chen  Yanhua Cheng  Benjamin S Hsiao  Elsa Reichmanis  Meifang Zhu 《国家科学评论(英文版)》2021,8(9)

Hydrogel optical light-guides have received substantial interest for applications such as deep-tissue biosensors, optogenetic stimulation and photomedicine due to their biocompatibility, (micro)structure control and tissue-like Young''s modulus. However, despite recent developments, large-scale fabrication with a continuous synthetic methodology, which could produce core-sheath hydrogel fibers with the desired optical and mechanical properties suitable for deep-tissue applications, has yet to be achieved. In this study, we report a versatile concept of integrated light-triggered dynamic wet spinning capable of continuously producing core-sheath hydrogel optical fibers with tunable fiber diameters, and mechanical and optical propagation properties. Furthermore, this concept also exhibited versatility for various kinds of core-sheath functional fibers. The wet spinning synthetic procedure and fabrication process were optimized with the rational design of the core/sheath material interface compatibility [core = poly(ethylene glycol diacrylate-co-acrylamide); sheath = Ca-alginate], optical transparency, refractive index and spinning solution viscosity. The resulting hydrogel optical fibers exhibited desirable low optical attenuation (0.18 ± 0.01 dB cm⁻¹ with 650 nm laser light), excellent biocompatibility and tissue-like Young''s modulus (<2.60 MPa). The optical waveguide hydrogel fibers were successfully employed for deep-tissue cancer therapy and brain optogenetic stimulation, confirming that they could serve as an efficient versatile tool for diverse deep-tissue therapy and brain optogenetic applications.  相似文献   

The Role of Family Characteristics for Students’ Academic Outcomes: A Person‐Centered Approach          下载免费PDF全文

Isabelle Häfner  Barbara Flunger  Anna‐Lena Dicke  Hanna Gaspard  Brigitte M. Brisson  Benjamin Nagengast  Ulrich Trautwein 《Child development》2018,89(4):1405-1422

Using data from 1,571 ninth‐grade students (M_age = 14.62) from 82 academic track schools in Germany and their predominantly Caucasian middle‐class parents, configurations of different family characteristics reported by parents were investigated. Latent profile analyses considering academic involvement, family interest, parents’ self‐concept, child's need for support, and parents’ time and energy identified average, indifferent, motivated and engaged, motivated and disengaged, and involved families. Cross‐sectional and longitudinal associations with students’ motivational (self‐concept, effort, and interest) and achievement outcomes (achievement test and grades) in math were analyzed. Students from families classified as motivated and disengaged showed higher initial levels motivation and achievement. Over 5 months, these students also showed an increase in self‐concept and higher achievement than students from other family types.  相似文献   

Thinking in hashtags: exploring teenagers’ new literacies practices on twitter     

Benjamin Gleason 《Learning, Media and Technology》2018,43(2):165-180

This research investigates how three high school students in the USA developed new literacies practices through their participation in teenage Twitter. Data was collected from two sources, including archival data from participants’ Twitter over a two-year span, and semi-structured interviews. Results found that teenagers developed a number of practices that facilitated orientation to cultural conventions of teenage Twitter, helped them mobilize followers for participatory events, and led to reflective awareness of how to tell stories on Twitter. This study suggests that teenagers used the affordances of Twitter in order to craft multimodal narratives that are co-constructed, participatory, nonlinear, and emergent. Thinking in hashtags, for participants, is a kind of action that serves to develop affinities of relation (to friends, to pop culture, and to new knowledge) through mediatized ‘vital life stuff.’  相似文献