代建制中博弈关系研究

近些年来,我国在政府职能改革方面一直致力于改变政企不分,政事不分,政府投资项目效率低下的现状,政府所以引入了代建制,提高了我国的政府投资效益,但是在代建制实施过程中,代建单位也存在着这样那样的问题,这就需要我国政府需要加强监督措施,规范代建制市场行为。     

从文献课教材内容特点看高校信息素质教育发展新动向

通过对近三年出版的具有代表性的文献课教材的抽样调查,对现行教材内容的特点进行分析和归纳,并从中总结出当前信息素质教育发展的新动向:信息素质教育要强调全面培养学生的信息意识、信息技能和信息道德;只有注重实际教学效果,强化检索实践,关注社会需求,才能不断拓展文献课的作用和影响;教材内容必须及时反映信息资源变化及信息检索技术的最新成果,尤其需要突出信息创新意识、创新技能以及信息道德规范教育。     

亚太国家高校产学研合作教育模式比较与我国的模式选择

通过比较分析亚太主要国家美国、日本、加拿大、澳大利亚和印度等高校产学研合作教育的模式特点,发现其值得借鉴的经验;在剖析我国高校产学研合作教育现状与问题的基础上,提出我国高校产学研合作教育模式选择的建议,即"政府组织推动、国家示范带动、高校(科研院所)主导主动、企业重视联动"。     

新工科背景下互助互督团队学习模式研究

提出大学教育应从以个体学习为主跃迁到团队学习模式,并阐述其重要意义,同时从管理学、教育学和心理学等多个学科的视角发掘团队学习模式的理论依据.然后指出团队学习模式应重点关注的几个关键问题,并通过实践,给出相应的对策.最后通过对比分析,发现团队学习模式对改善大学生学习过程的表现和提升最终的学习成效具有显著的作用.     

论高校图书馆特色数据库建设

本文主要分析高校图书馆特色数据库建设中存在的问题,探讨特色数据库建设的方案、原则及建设过程中需注意的几个问题.     

Effects of science teachers' epistemological beliefs in teaching

In recent years there has been a renewed interest in investigating teachers' beliefs in general, and science teachers' epistemological beliefs in particular. However, very few studies have investigated the effects of these epistemological beliefs in teaching. The purpose of this study was to test the hypotheses that teachers holding constructivist beliefs (a) are more likely to detect student alternative conceptions; (b) have a richer repertoire of teaching strategies; (c) use potentially more effective teaching strategies for inducing student conceptual change; (d) report more frequent use of effective teaching strategies: and (e) highly valuate these teaching strategies compared with teachers holding empiricist beliefs. Through the use of a three-part questionnaire consisting of critical incidents, direct questions about teacher strategies of conceptual change, and ratings of the use and importance of specific teaching strategies, data were obtained from 35 science teachers with different science backgrounds and teaching at different educational levels. Analysis of the data supported all five hypotheses. The findings are discussed in terms of their implications for further research. © 1996 John Wiley & Sons, Inc.     

高校教师管理存在的问题与对策探讨

本文就目前我国高校教师管理存在行政化倾向严重、教师资源配置不当、人才流失严重等问题进行了分析,并提出高校在教师管理中转变管理观念、推行人本管理、完善引进机制、健全激励机制等有效措施,为高校教师管理的科学化、柔性化提供理论参考.     

基于曲线匹配的星载激光测高仪无场在轨几何定标方法

星载激光测高技术的快速发展急需有效的在轨几何定标方法来校正测高数据中的系统误差。探索一种基于曲线匹配的测高仪无场在轨几何定标方法。该方法利用激光足印高程曲线与DEM进行匹配获得激光足印控制点进而实现定标参数求解,无需到野外布设探测器定标场地。采用资源三号02星激光测高数据进行定标方法验证,并对定标结果进行精度评估。实验表明,经本文的定标方法校正后的测高数据的精度得到显著提升,验证了本方法的有效性。     

体育锻炼促进本科女生学习效率的实证研究

本研究通过量表信效度检测、设计量表、相关性分析,以北京工业大学本科女生群体作为调查对象,探究本科女生体育锻炼与其学习效率是否具有相关性。最终通过数据分析得到,本科女生体育锻炼与其学习效率成正相关性,故基于"线上线下"、"课上课下"角度一级北京工业大学校园资源建设的实际情况,提出相对应的措施来促进北京工业大学本科女生体育锻炼水平,进而提升其学习效率。     

Impact of age on host responses to diet-induced obesity:Development of joint damage and metabolic set points

Background:Osteoarthritis is one of the leading causes of pain and disability worldwide,and a large percentage of patients with osteoarthritis are individuals who are also obese.In recent years,a series of animal models have demonstrated that obesity-inducing diets can result in synovial joint damage(both with and without the superimposition of trauma),which may be related to changes in percentage of body fat and a series of low-level systemic inflammatory mediators.Of note,there is a disparity between whether the dietary challenges commence at weaning,representing a weanling onset,or at skeletal maturity,representing an adult onset of obesity.We wished to evaluate the effect ofthe dietary exposure time and the age at which animals are exposed to a high-fat and high-sucrose(HFS) diet to determine whether these factors may result in disparate outcomes,as there is evidence suggesting that these factors result in differential metabolic disturbances.Based on dietary exposure time,we hypothesized that rats fed an HFS diet for 14 weeks from weaning(HFS Weanling) would demonstrate an increase in knee joint damage scores,whereas rats exposed to the HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult) and rats exposed to a standard chow diet(Chow)would not display an increase in knee joint damage scores.Methods:Male Sprague-Dawley rats were fed either an HFS diet for 14 weeks from weaning(HFS Weanling) or an HFS diet for 4 weeks,starting at 12 weeks of age(HFS Adult).At sacrifice,joints were scored using the modified Mankin Criteria,and serum was analyzed for a defined subset of inflammatory markers(Interleukin-6,leptin,monocyte chemoattractant protein-1,and tumor necrosis factorα).Results:When the HFS Weanling and HFS Adult groups were compared,both groups had a similar percent of body fat,although the HFS Weanling group had a significantly greater body mass than the HFS Adult group.The HFS Weanling and HFS Adult animals had a significant increase in body mass and percentage of body fat when compared to the Chow group.Although knee joint damage scores were low in all 3 groups,we found,contrary to our hypothesis,that the HFS Adult group had statistically significant greater knee joint damage scores than the Chow and HFS Weanling groups.Furthermore,we observed that the HFS Weanling group did not have significant differences in knee joint damage scores relative to the Chow group.Conclusion:These findings indicate that the HFS Weanling animals were better able to cope with the dietary challenge of an HFS diet than the HFS Adult group.Interestingly,when assessing various serum proinflammatory markers,no significant differences were detected between the HTS Adult and HFS Weanling groups.Although details regarding the mechanisms underlying an increase in knee joint damage scores in the HFS Adult group remain to be elucidated,these findings indicate that dietary exposure time maybe less important than the age at which an HFS diet is introduced.Moreover,increases in serum proinflammatory mediators do not appear to be directly linked to knee joint damage scores in the HFS Weanling group animals but may be partially responsible for the observed knee joint damage in the adults over the very short time of exposure to the HFS diet.