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Anamarija Rozic-Hristovski Dimitar Hristovski Ljupco Todorovski 《Journal of the Medical Library Association》2002,90(2):210-217
The Central Medical Library (CMK) at the Faculty of Medicine, University of Ljubljana, Slovenia, started to build a library Website that included a guide to library services and resources in 1997. The evaluation of Website usage plays an important role in its maintenance and development. Analyzing and exploring regularities in the visitors'' behavior can be used to enhance the quality and facilitate delivery of information services, identify visitors'' interests, and improve the server''s performance. The analysis of the CMK Website users'' navigational behavior was carried out by analyzing the Web server log files. These files contained information on all user accesses to the Website and provided a great opportunity to learn more about the behavior of visitors to the Website. The majority of the available tools for Web log file analysis provide a predefined set of reports showing the access count and the transferred bytes grouped along several dimensions. In addition to the reports mentioned above, the authors wanted to be able to perform interactive exploration and ad hoc analysis and discover trends in a user-friendly way. Because of that, we developed our own solution for exploring and analyzing the Web logs based on data warehousing and online analytical processing technologies. The analytical solution we developed proved successful, so it may find further application in the field of Web log file analysis. We will apply the findings of the analysis to restructuring the CMK Website. 相似文献
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The study reported in this article attempted to obtain normative acoustic data of voice for elderly male and female speakers and to explore the educational implications of the effects of aging on those selected acoustic parameters. Voice samples from 21 male and 23 female elderly speakers aged 70 to 80 years were obtained on measures of 15 selected Multi-Dimensional Voice Program acoustic parameters. These data then were compared with the published norms for young and middle-aged adults. The results showed that, compared with young and middle-aged adults, elderly speakers had significantly different (usually poorer) vocal output on all of the selected acoustic parameters of voice. These findings illustrate the importance of establishing acoustic norms and thresholds for elderly men and women and stress the necessity of using discretion in making dragnostic measurements of elderly speakers' acoustic parameters of voice. This article also highlights the educational implications of such aging voice changes. 相似文献
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Chen Chen Gerhard Sonnert Philip M. Sadler Dimitar Sasselov Colin Fredericks 《科学教学研究杂志》2020,57(6):879-910
Massive Online Open Courses (MOOCs) provide opportunities to learn a vast range of subjects. Because MOOCs are open to anyone with computer access and rarely have prerequisite requirements, the range of student backgrounds can be far more varied than in conventional classroom-based courses. Prior studies have shown that misconceptions have a huge impact on students' learning performance; however, no study has empirically examined the relationship between misconceptions and learning persistence. This study of 12,913 MOOC-takers examines how students' misconceptions about the upcoming course material affect course completion. Using a survival analysis approach, we found that, controlling for the score in a pre-course test, students holding more misconceptions had a higher dropout rate at the start of the course, an effect that diminished over time. Other student variables were found to have a positive impact on survival that persisted throughout the entire course: U.S. location, higher age, an intention to complete, better English skills, prior familiarity with the subject, motivation to earn a certificate, and score and time spent on the previous problem set (homework). By contrast, student gender, education level, number of previous MOOCs completed, and motivation to participate in online discussion forums did not affect survival. 相似文献
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Cross-cultural comparisons of child-reported emotional and physical abuse: rates, risk factors and psychosocial symptoms 总被引：1，自引：0，他引：1
Sebre S Sprugevica I Novotni A Bonevski D Pakalniskiene V Popescu D Turchina T Friedrich W Lewis O 《Child abuse & neglect》2004,28(1):113-127
OBJECTIVES: This study was designed to assess the incidence of child emotional and physical abuse, associated risk factors and psychosocial symptoms in a cross-cultural comparison between post-communist bloc countries. Method: One-thousand one-hundred forty-five children ages 10-14 from Latvia (N = 297), Lithuania ( N = 300), Macedonia (N = 302), and Moldova (N = 246) participated in the study. They completed questionnaires assessing their experience of emotional or physical abuse, and provided information about family risk-factors and psychosocial symptoms, including PTSD-related symptoms. RESULTS: Incidence rates of maltreatment differed by country, as did levels of reported psychosocial symptoms. Incidence of emotional and physical abuse differed by region, with higher levels of abuse reported in the rural regions. In all four countries, a similar association between emotional/physical abuse and psychosocial symptoms was found, with the uniformly largest correlation between emotional abuse and anger. When examining the combined scores of emotional and physcial abuse, even higher correlation's were found, particularly in relation to anger and depression. In all four countries, parental overuse of alcohol was associated with emotional and/or physical abuse. CONCLUSIONS: Findings show differences by country in child-reported levels of emotional and physical abuse, but similar patterns of correlation with psychosocial symptoms and the risk factors of parental alcohol overuse and living in a rural area. 相似文献
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