Quality and relevance of domain-specific search: A case study in mental health     

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   

Beyond Things: The Ontological Importance of Play According to Eugen Fink     

Jan Halák 《体育哲学杂志》2016,43(2):199-214

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Collaborative Development and Evaluation of an Online Nursing Course     

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   

Equipping the preschool playspace     

Hal Malehorn 《Early Childhood Education Journal》1979,7(1):35-38

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Innovative products     

Hal Malehorn 《Early Childhood Education Journal》1978,6(2):22-26

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STEM Performance and Supply: Assessing the Evidence for Education Policy     

Salzman  Hal  Lieff Benderly  Beryl 《Journal of Science Education and Technology》2019,28(1):9-25

The relationship between education policy and workforce policy has long been uneasy. It is widely believed in many quarters of American society that the U.S. education system is in decline and, what’s more, that it bears significant responsibility for a wide range of social ills, including stagnant wages, increasing inequality, high unemployment, and overall economic lethargy. However, as analyzed in this paper, the preponderance of evidence suggests that the U.S. education system has produced ample supplies of students to respond to STEM labor market demand. The “pipeline” of STEM-potential students is similarly strong and expanding.

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Strategies for Achieving Gender Equality in Higher Education and Research in Norway     

Ann S⊘yland  Anne-Marit Skarsb⊘  Nina Amble  Lise Christensen  Anna Ølnes 《Higher Education in Europe》2000,25(2):147-153

The vision behind the work of the gender equality advisors in Norwegian universities and the Research Council of Norway is that of full equality between women and men in all areas and at all levels of the sector of higher education. The Network of Gender Equality Advisors in Higher Education and Research was formed in 1994. Both good and less good news can be reported on the work accomplished so far. A double strategy is applied to tackle gender inequality: mainstreaming and special commitment.  相似文献   

Physical activity,physiological, and psychomotor performance: a study of variously active older adult men     

Christensen CL  Payne VG  Wughalter EH  Yan JH  Henehan M  Jones R 《Research quarterly for exercise and sport》2003,74(2):136-142

This research examined varying levels of physical activity and psychomotor and physiological function in variously active older men. Very active moderately active, and low active participants were tested on simple (SRT) and choice reaction time (CRT), coincidence-anticipation timing (CAT), and VO2max. No significant differences for age or height were found, although percentage of fat, and weight were statistically different. Active groups were leaner and lighter. VO2max was significantly different between groups, as physically active groups yielded geater values. SRT and CAT also yielded significantly different results with more active participants showing better performance. No between-groups significant differences resulted for CRT. Generally, increased levels of physical activity were related to superior physiological outcomes and improved psychomotor peformance.  相似文献   

Conceptual sign language as a bridge between English and Spanish     

K M Christensen 《American annals of the deaf》1985,130(3):244-249

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Innovative products     

Hal Malehorn 《Early Childhood Education Journal》1978,5(4):18-21

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