研发驱动内生增长模型中的企业研发行为与政府政策     

曾德明  陈立勇 《研究与发展管理》2002,14(3):37-41,52

在研发驱动的内生经济增长理论的框架内,对企业研发竞争行为和政府研发政策的最新研究进展进行了深入探讨,并结合我国产业现状指出政府为产业领先者提供补贴并对新的产业领先企业的利润征税能使社会福利达到最优。  相似文献   

关于风险投资者和投资管理机构的关系模型   总被引：2，自引：0，他引：2  

陈德棉  李刚  张玉臣 《预测》2001,20(6):52-53

由于信息不对称，风险投资管理机构存在很大的道德风险。本文通过风险投资者和投资管理机构之间的关系研究认为，使投资管理者的回报和基金收益挂钩和公布投资管理者的业绩信息，可以对投资管理者进行有效的激励和约束。  相似文献   

The dyadic nature of bullying and victimization: testing a dual-perspective theory   总被引：2，自引：1，他引：1  

Veenstra R  Lindenberg S  Zijlstra BJ  De Winter AF  Verhulst FC  Ormel J 《Child development》2007,78(6):1843-1854

For this study, information on Who Bullies Who was collected from 54 school classes with 918 children (M age = 11) and 13,606 dyadic relations. Bullying and victimization were viewed separately from the point of view of the bully and the victim. The two perspectives were highly complementary. The probability of a bully-victim relationship was higher if the bully was more dominant than the victim, and if the victim was more vulnerable than the bully and more rejected by the class. In a bully-victim dyad, boys were more often the bullies. There was no finding of sex effect for victimization. Liking reduced and disliking increased the probability of a bully-victim relationship.  相似文献   

Barriers to prisoner participation in educational courses: Insights from a remand prison in Belgium     

Brosens  Dorien  Croux  Flore  De Donder  Liesbeth 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2019,65(5):735-754

International Review of Education - This article examines the profile of prisoners who do not take part in formal education while being incarcerated (e.g. language or ICT courses) and the barriers...  相似文献   

Refining Students’ Explanations of an Unfamiliar Physical Phenomenon-Microscopic Friction     

Corpuz  Edgar De Guzman  Rebello  N. Sanjay 《Research in Science Education》2019,49(5):1177-1211

Research in Science Education - The first phase of this multiphase study involves modeling of college students’ thinking of friction at the microscopic level. Diagnostic interviews were...  相似文献   

CUE SYSTEM UTILIZATIONS AMONG OLDER READERS     

R. J. De Santi 《Educational gerontology》2013,39(3):271-277

The effects of writing style upon mature older readers’ reading comprehension are considered. Two narrative historical selections, the first emotive and abstract and the second nonemotive and concrete, were employed. Miscue analysis was used to evaluate the efficiency with which each reader used reading strategies across the five systems that cue meaningful comprehension. Miscues were analyzed at the word, clause, sentence, and intersentence levels. In addition, interview schedules were employed to identify readers’ perceptions of preferred reading strategies and to permit a comparison with actual performance. The findings indicate that mature older readers are consistent in cue system utilization. A preference for the word cue system influenced both the use of cues from other systems and comprehension. Use of the word‐level cue system is inversely related to the use of the other available cue systems. Preference for cues within words also appears to be inversely related to comprehending effectiveness. The subjects’ perceptions of the reading process and their actual reading performance appeared to determine patterns of cue system use more clearly than did the differences in materials. As a result, those developing materials intended for use in programs with older persons should not only be concerned with the content and quality of those materials but also the skills and perceptions of those who will use the materials.  相似文献   

An orthopedagogical method for children with a depression     

Frank De Fever 《欧洲特需教育杂志》2013,28(3):262-274

ABSTRACT

An orthopedagogical method for teaching children with a depression is presented here. Relatively unknown in the English‐speaking world, orthopedagogy is a pedagogical discipline that is aimed at an entire action field. It does not target the child with handicap, but the entire problematic educational situation (PES). Orthopedagogy is the scientific study of assistance given to those concerned with a PES ‐ namely, the child, parents, brothers and sisters, grandparents, and so on. To break through a PES or to get rid of it, the orthopedagogician has to listen to the orthopedagogical request for help of the child and give an appropriate answer to it. On the basis of a theoretical model of Paul Gilbert, an orthopedagogic request for helping children with a depression was formulated. Gilbert's model offers a perspective derived from evolution theory and argues for the adoption of a bio‐psychological approach. Children with a depression request a warm and loving climate, an attractive and simple education situation and close involvement on the part of the educator. To answer that request, we set orthopedagogical action on two tracks. On track 1 (dialogical action) we try to break through the PES by asking the educator to over‐accentuate the pedagogical climate, the education situation and his/her own presentation. On track 2 (technical action) we designed an approach aimed at children aged between 6 and 12 years with a depression.  相似文献   

RIM: A Random Item Mixture Model to Detect Differential Item Functioning     

Sofie Frederickx  Francis Tuerlinckx  Paul De Boeck  David Magis 《Journal of Educational Measurement》2010,47(4):432-457

In this paper we present a new methodology for detecting differential item functioning (DIF). We introduce a DIF model, called the random item mixture (RIM), that is based on a Rasch model with random item difficulties (besides the common random person abilities). In addition, a mixture model is assumed for the item difficulties such that the items may belong to one of two classes: a DIF or a non-DIF class. The crucial difference between the DIF class and the non-DIF class is that the item difficulties in the DIF class may differ according to the observed person groups while they are equal across the person groups for the items from the non-DIF class. Statistical inference for the RIM is carried out in a Bayesian framework. The performance of the RIM is evaluated using a simulation study in which it is compared with traditional procedures, like the likelihood ratio test, the Mantel-Haenszel procedure and the standardized p -DIF procedure. In this comparison, the RIM performs better than the other methods. Finally, the usefulness of the model is also demonstrated on a real life data set.  相似文献   

Patterns of journal publications by staff of the College of Medicine, University of Ibadan, Nigeria, 1961-1980     

P H Shoyinka  F D De Cola 《Bulletin of the Medical Library Association》1984,72(2):168-176

This study analyzes publishing patterns of the staff of the University of Ibadan College of Medicine, Nigeria, based on a bibliography prepared by the authors. Data-gathering for the bibliography is described. An analysis is made of journals staff published in for the period 1961-1980, focusing on changes in journal order rank, publishing locations, and subject spread. A ranked list of the leading journals for the period 1976-1980 is given, showing the importance of local publishing and pointing to the need for local indexing.  相似文献   

关于广东省普通高校体育专业招生考试足球项目考试内容、方法及评分标准的研究   总被引：1，自引：0，他引：1  

臧连明  王君  郭惠先  刘飞振  钟利卿  温建德  肖子亮 《广州体育学院学报》2004,24(6):62-65

采用调查访问、实验法对广东省普通高校体育专业招生考试足球项目考试内容、方法及评分标准进行研究,通过研究．足球非专项考试难度偏低的问题、足球专项考试方法中颠球、绕杆射门项目考试难度偏低以及踢准项目偏难等问题得到解决,从而确立了广东省新的足球专项、非专项考试的各项内容、方法及评分标准,为广东省考试中心组织实施2005年广东省普通高校体育专业招生考试提供了具有实效性和科学性的保证。  相似文献