超声光栅测量液体体积弹性模量实验研究

在利用超声光栅测液体声速的基础上,针对不同浓度的食盐(NaCl)溶液,研究超声波声速与溶液浓度的关系,并由此得出液体体积弹性模量与浓度的关系。实验结果表明,食盐(NaCl)溶液浓度与其体积弹性模量成近似线性关系。     

江苏省立国学图书馆与中国文化传承研究

近代西方欧美文化输入中国后,绵延数千年的传统文化面临空前的危机,中国文化传承成为时人思考的深切主题。本文重点探讨江苏省立国学图书馆民国时期古籍收藏及出版、木刻版片保存等方面的业绩,以阐扬其传承中国文化的卓越贡献。     

Expanded Assessment Study Examining the Citation Patterns from Traditional and Nontraditional Institutions and Their Effect upon the Quality of Doctoral Dissertation Reference Lists

ABSTRACT

This study used citation analysis in conjunction with a subjective rubric with five validated criteria to assess the quality of a purposive sample of 452 education dissertation reference lists produced at a nontraditional institution from six doctoral programs. These programs used a variety of distance education models. The citations were then compared with the 100 reference lists selected from doctoral education programs at 10 traditional institutions. Criteria included the breadth of resources, depth of the literature review as shown through the citing of critical historical and theoretical works, depth as demonstrated through the scholarliness of citations chosen, currency, and relevancy. The study discusses how the expanded sample of traditional reference lists continued to demonstrate consistent patterns. In contrast, although the sample of reference lists from distance education programs was much expanded, the patterns of the subsets of reference lists at the nontraditional institution were significantly diverse. The patterns of 35 doctoral reference lists from another for-profit, nontraditional institution known for providing distance education were also examined to compare the results of the two nontraditional programs. Possible reasons for differences in citation patterns by traditional and nontraditional programs are discussed, and the possible role of distance education and program criteria are examined for insights they offer into the use of citation analysis as an assessment tool of the library research skills of doctoral students.     

论罗森塔尔效应与教学规律

罗森塔尔效应所体现的教育方法,因应了教育的基本规律,我国古今教育理论对此均有阐述和实践,体现出“期望与爱”在教育中的普遍意义。     

Changes in running economy following downhill running

In this study, we examined the time course of changes in running economy following a 30-min downhill (-15%) run at 70% peak aerobic power (VO2peak). Ten young men performed level running at 65, 75, and 85% VO2peak (5 min for each intensity) before, immediately after, and 1 - 5 days after the downhill run, at which times oxygen consumption (VO2), minute ventilation, the respiratory exchange ratio (RER), heart rate, ratings of perceived exertion (RPE), and blood lactate concentration were measured. Stride length, stride frequency, and range of motion of the ankle, knee, and hip joints during the level runs were analysed using high-speed (120-Hz) video images. Downhill running induced reductions (7 - 21%, P < 0.05) in maximal isometric strength of the knee extensors, three- to six-fold increases in plasma creatine kinase activity and myoglobin concentration, and muscle soreness for 4 days after the downhill run. Oxygen consumption increased (4 - 7%, P < 0.05) immediately to 3 days after downhill running. There were also increases (P < 0.05) in heart rate, minute ventilation, RER, RPE, blood lactate concentration, and stride frequency, as well as reductions in stride length and range of motion of the ankle and knee. The results suggest that changes in running form and compromised muscle function due to muscle damage contribute to the reduction in running economy for 3 days after downhill running.     

多媒体生存·多功能延伸·多主体参与——改革开放30年新闻评论的发展与变化

改革开放30年来中国新闻评论的发展,既体现在它与社会变革的互动关系上,也体现在其自身传播系统的扩充与变化上,包括新闻评论由报纸向广播、电视、网络等其他媒体发展,评论功能从舆论引导、舆论监督向舆论集散、舆论整合延伸,以及评论作者从新闻从业者向公众、专家扩展.     

It Is Not Just a Matter of Ethics: A Survey of the Provision of Health Disclaimers,Caveats, and Other Health-related Alerts in Consumer Health Information on Eating Disorders on the Internet

Eating disorders affect millions of people, and their prevalence demonstrates that the condition exists across gender and cultural boundaries. The Internet is a major channel for publishing and disseminating electronic information, allowing worldwide access of massive health-related, lay- and professional-oriented information. However, much research has found that health-related information on the Internet can be overwhelming, incomplete, and/or inaccurate. The success of health promotion in the 21st century depends on whether available consumer health information (CHI) is adequate, accurate, and easy to use. Usually, health disclaimers, caveats, and other health-related alerts are messages to notify users that the information provided is not intended nor implied to be a replacement or an alternative for professional health-related advice. These messages also serve as indicators to show that information providers take ethical responsibility for quality control in terms of providing valid and reliable consumer health information on the Internet. The study used content analysis¹to examine the provision and assess the quality of health disclaimers, caveats, and other health-related alerts included in adult CHI on eating disorders published on the Internet in 1998. The researcher-generated instrument was based on evaluative criteria derived from Alexander and Tate;²Health On the Net Foundation;³Mitretek Systems;⁴and Silberg, Lundberg and Musacchio.⁵Web search engines (Northern Light, HotBot, and Excite) were used for data collection on Internet-based publications. The results indicated that the CHI on eating disorders on the Internet did not include disclaimers, caveats, and other health-related alerts which demonstrates a lack of quality control and ethical responsibility on the part of the information providers and site administrators.     

CDIO工程人才培养模式的研究

面对当前我国高校工程类教育现状,遵循CDIO(conceive,design,implement,operate,构思-设计-实施-运作)高等工程教育模式,研究新世纪工程人才的培养计划,即通过底线培训计划、工程实践性环节的锻炼、创新性工程人才实践能力的培养3个环节,指出教学团队与导师制是实施的关键因素,同时给出了CDIO工程性人才培养的可行性操作方案.     

企业信息资源管理理论研究现状评述

本文分析和评论了企业信息资源管理理论的研究现状,井指出了目前信息资源管理理论研究中存在的问题.     

RRM1 gene expression in peripheral blood is predictive of shorter survival in Chinese patients with advanced non-small-cell lung cancer treated by gemcitabine and platinum

Objective  

To evaluate the predictive values of gene expressions of ribonucleotide reductase M1 (RRM1) and breast cancer susceptibility gene 1 (BRCA1) in peripheral blood from Chinese patients with non-small-cell lung cancer (NSCLC) treated with gemcitabine plus platinum.