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排序方式: 共有477条查询结果,搜索用时 15 毫秒
1.
Jennifer R. Warren Michael L. Hecht David A. Wagstaff Elvira Elek Khadidiatou Ndiaye Patricia Dustman Flavio F. Marsiglia 《Journal of Applied Communication Research》2006,34(2):209-227
This study sought to determine if exposure to two communication-oriented activities, videotapes and public service announcements, accounts for changes in substance use among adolescents participating in the Drug Resistance Strategies Project's keepin' it REAL adolescent substance use prevention curriculum. Middle-school students (4,734, 72% Latino) responded to questionnaires related to these analyses. An analysis of covariance (ANCOVA) model was fit separately to six substance use outcomes. The results suggested that intervention students who saw four or five videos engaged in less substance use in the past month than did students who saw fewer videos. Having seen the PSAs one or more times did not predict the reported change in substance use. 相似文献
2.
Thanh Tin Tang Nick Craswell David Hawking Kathy Griffiths Helen Christensen 《Information Retrieval》2006,9(2):207-225
When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term ‘depression’ was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality. 相似文献
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The psychological significance of secondary sexual characteristics in nine- to eleven-year-old girls 总被引:1,自引:0,他引:1
82 9-11-year-old girls were seen in order to study the onset of puberty as represented by breast and pubic hair growth. Girls filled out self-report scales, mothers rated their daughters' breast and pubic hair development using schematic representations of the Tanner stages, and height was measured by a nurse practitioner. Breast growth, but not pubic hair growth, was expected to be associated with a positive body image, positive peer relationships, superior adjustment, and the rating of adult roles as important (marriage, children, and careers). These expectations were confirmed for all but the adult role measures. Controlling for pubic hair growth did not alter the findings for breast development. Associations with height also were examined. Height was linked to superior adjustment and career importance. These findings are discussed in terms of possible roles that different pubertal events may play in the self-definitions of young adolescents as well as the meaning of various physical changes to the girl and to others. 相似文献
5.
Judith W. Alexander Vera Polyakova-Norwood Linda W. Johnston Patricia Christensen Renatta S. Loquist 《Distance Education》2003,24(1):41-56
Institutions of higher education acknowledge that online learning represents a growing segment of the modern learning environment, and most students have mastered basic computer skills. However, reluctance to engage in online learning remains among both faculty and students. This article presents a case study of three schools of nursing that collaboratively developed and implemented an online undergraduate-nursing course. The article discusses the challenges that were encountered by faculty and students. The faculty used the distance education literature to address these challenges related to technological, institutional, and pedagogical aspects of online learning, as well as the recruitment and retention of online learners. Quantitative and qualitative methods were used to evaluate the effectiveness of the course. The paper concludes with suggestions to overcome the challenges of online learning, such that faculty and students receive the inherent rewards. 相似文献
6.
Warren Wollman 《科学教学研究杂志》1984,21(4):399-415
In an exploratory study, education majors in a physical science course were given a set of tasks analogous to a given, solved prototype-task to see how transfer items were handled. Some students were given a conceptual model along with the solved prototype. Others were given a general procedure for applying the conceptual model to the transfer items. The procedure helped considerably for the transfer items least like the prototype item. The model alone was also effective for certain items. In the absence of both model and procedure, students' problem solving was usually incoherent or self-contradictory. Presenting additional solved items helped marginally on an exceptionally novel item. Students' main source of difficulty, given the model and procedure, was that they were distracted by prior, concrete experience and thus failed to follow the procedure. For most students, this difficulty could readily be overcome. A small proportion (10–15%) of students had more profound difficulties. 相似文献
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Emily Warren Leonardo Bevilacqua Charles Opondo Elizabeth Allen Anne Mathiot Grace West Farah Jamal Russell Viner Chris Bonell 《British Educational Research Journal》2019,45(5):979-1000
Education policy increasingly promotes action groups as a key strategy for student and/or staff participation in school improvement and whole-school health promotion. Such groups can coordinate multi-component interventions, increase participation and engagement, and enable local adaptations, but few process evaluations have assessed this. We evaluated fidelity, feasibility and acceptability of action groups as part of a trial of a whole-school intervention to reduce bullying and aggression and promote health in English secondary schools, which reported multiple health and educational impacts. Action groups involved students and staff, supported by external facilitators, and drew on data on student needs. They aimed to: coordinate implementation of restorative practices and a social and emotional competencies curriculum; review policies and rules; and enact local decisions to modify school environments. Our process evaluation used interviews, focus groups, observations and questionnaires to assess action groups’ fidelity, role in coordination, role in local adaptation, support from external facilitators and data on student needs, and acceptability in engaging members. Fidelity was high in the first two years but lower in the third year when external facilitators withdrew. Student needs data were perceived as useful, but views on external facilitators were mixed. Groups successfully reviewed policies and rules, planned activities and coordinated restorative practices, but were less successful in implementing the curriculum. Success was facilitated by the involvement of school leaders. Members reported high satisfaction and empowerment. Action groups are a promising strategy for leading whole-school health promotion. Implementation is supported by external facilitation, local data and involvement of senior managers. 相似文献
10.
Christian Christensen 《Popular Communication》2016,14(4):224-237
In the decade since the founding of WikiLeaks, no non-leak-related issue has dominated coverage of the organization more than the August 2010 allegations made by two women in Stockholm against WikiLeaks founder Julian Assange. This case has been addressed on the WikiLeaks Twitter feed on a consistent basis over the past 6 years. The tweets from WikiLeaks to millions of followers constitute a form of popular communication where a broad—albeit somewhat prefigured—audience is targeted using an open social media platform. With this audience in mind, I analyze the use of Twitter by WikiLeaks to address the 2010 rape allegations against Assange (and the subsequent follow-on events after those allegations), with a particular focus on two issues: (a) the framing by WikiLeaks of the allegations, Sweden, rape, and feminism; and (b) how the sources (links) used in those tweets to back up claims should be seen as part of the general framing process. 相似文献