企业集群与供应链的共生性研究   总被引：13，自引：0，他引：13  

夏德  程国平 《研究与发展管理》2003,15(6):62-66

针对具有时代经济特点的产业企业集群和为适应并驾驭这种经济的供应链模式,讨论了二者在具体运作过程中相互依存共同发展的共生性和战略目标上的趋同性,试图阐明二者协调发展的共生机理。  相似文献   

Does school time matter?—On the impact of compulsory education age on school dropout     

Sofie J. Cabus  Kristof De Witte 《Economics of Education Review》2011,30(6):1384-1398

A straightforward way to prevent students from leaving education without a higher secondary diploma is increasing the compulsory education age. The idea is that, by staying longer in school, more students eventually obtain a higher secondary diploma. This paper examines the impact of a one-year increase in compulsory school-age on dropping out of secondary education by a difference-in-differences analysis. For this, we exploit a recent compulsory education policy reform in the Netherlands. After controlling for confounding factors and observable covariates, we find that the one year increase in compulsory school-age reduces dropout by 2.5 percentage points. The effect, however, is entirely situated in the group non-liable to the policy reform. We observe that native Dutch vocational students, mostly without retention in grade, but also without a higher secondary diploma at hand, more often left school in the immediate period before the policy reform. Given the economic revival at that time, this may reflect anticipation of labor market opportunities.  相似文献   

Anatomical Sciences Education Vol. 4, Issue 3, 2011 Cover Image     

Veronica Macchi  Andrea Porzionato  Carla Stecco  Cesare Tiengo  Anna Parenti  Adriano Cestrone  Raffaele De Caro 《Anatomical sciences education》2011,4(3)

Medical Gross Anatomy lecture at the University of Padova, Italy. Gross Anatomy at the University of Padova is taught utilizing both traditional and technological resources, which are integrated with practical laboratory exercises (mainly on plastic models and plastinated specimens) as well as radiological anatomy. In this issue of ASE, Dr. Veronica Macchi and her colleagues from the Department of Human Anatomy and Physiology at the University of Padova discuss an innovative pilot project with their University Hospital in which they obtain body parts removed from patients during surgical procedures and utilize them for gross anatomy education. The cover photograph shows one of the co‐authors of this paper, Professor Raffaele De Caro and his students, performing dissection of the distal forearm and hand in the anatomy lecture theater at the University of Padova.  相似文献   

金融危机预警报道的缺失与美国新闻的变质     

李德 《新闻与传播研究》2011,(1)

美国媒体金融危机预警报道等方面的缺失和公信力的大幅下降,反映了新自由主义经济政策影响下美国媒体日趋垄断化,导致新闻日益商业化和娱乐化,发生了根本性的质变。  相似文献   

The long-term athlete development model: physiological evidence and application   总被引：2，自引：2，他引：0  

Ford P  De Ste Croix M  Lloyd R  Meyers R  Moosavi M  Oliver J  Till K  Williams C 《Journal of sports sciences》2011,29(4):389-402

Within the UK, the "Long Term Athlete Development" (LTAD) model has been proposed by a variety of national governing bodies to offer a first step to considering the approach to talent development. The model, which is primarily a physiological perspective, presents an advancement of understanding of developing athletic potential alongside biological growth. It focuses on training to optimize performance longitudinally, and considers sensitive developmental periods known as "windows of opportunity". However, it appears that there are a number of problems with this theoretical model that are not necessarily transparent to coaches. Principally, the model is only one-dimensional, there is a lack of empirical evidence upon which the model is based, and interpretations of the model are restricted because the data on which it is based rely on questionable assumptions and erroneous methodologies. Fundamentally, this is a generic model rather than an individualized plan for athletes. It is crucial that the LTAD model is seen as a "work in progress" and the challenge, particularly for paediatric exercise scientists, is to question, test, and revise the model. It is unlikely that this can be accomplished using classical experimental research methodology but this should not deter practitioners from acquiring valid and reliable evidence.  相似文献   

Fundamental movement skill performance of preschool children in relation to family context     

Cools W  De Martelaer K  Samaey C  Andries C 《Journal of sports sciences》2011,29(7):649-660

Evidence suggests the development of fundamental movement skill (FMS) is a key factor in promoting long-term physical activity. Low levels of activity among preschool children and the relationship between physical activity and the development of fundamental movement skills underline the need to determine the factors associated with children's development of such skills. As parents play an important role in the socialization process, the aim of this study was to examine correlates of family and neighbourhood characteristics as well as parental behaviour and beliefs on FMS performance in 4- to 6-year-old preschool children. Relationships between preschool children's FMS performance and family contextual variables were examined within a sample of 846 preschool children. Results identified positive associations of FMS performance with parental education, father's physical activity, transport to school by bicycle, and the high value placed by parents high on sport-specific aspects of children's physical activity. Variables negatively associated with preschool children's FMS performance included father-child interaction in TV-viewing and reading books, the high importance placed by parents on winning and performance in children's physical activity. Furthermore, the ambiguity of associations between FMS performance and parental beliefs underlined its complexity.  相似文献   

Engaging Students with Integrated STEM Education: a Happy Marriage or a Failed Engagement?     

De Loof  Haydée  Boeve-de Pauw  Jelle  Van Petegem  Peter 《International Journal of Science and Mathematics Education》2022,20(7):1291-1313

International Journal of Science and Mathematics Education - The “leaky pipeline” with regard to students’ engagement in Science, Technology, Engineering, and Mathematics (STEM)...  相似文献   

进一步开创敦煌研究的新局面     

马德  马高强 《家教指南》2022,(1):137-142

120多年来,世界范围内敦煌研究取得了一定的成就,为今后的研究奠定了基础。在这个基础上,需要认识敦煌历史文化作为精神财富对人类社会进步发展的价值意义;需要转变传统观念,改进研究方法,开创新的研究局面,促进敦煌事业的发展,为新时代坚持中国特色社会主义建设提供精神支撑。  相似文献   

亲水性废旧轮胎橡胶粉的制备及在固井水泥中的应用     

郭光范  姜德  王爽  张玉平  王宇飞  王建宇 《贵阳学院学报(自然科学版)》2022,17(1):52-57

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Medical and health informatics services during and after the COVID‐19 pandemic should be virtual,tailored, responsive and interactive: a case study in Belgium     

Nele S. Pauwels  Ann De Meulemeester  Alessia Romagnoli  Heidi Buysse  Renaat Peleman 《Health information and libraries journal》2021,38(1):66-71

This is part of a new series in this regular feature regarding trends in the provision of information by health science libraries. By sharing expertise and drawing together relevant trends the series intends to serve as a road map for both health science librarians and health informatics professionals. This article shows how a medical and biomedical research library changed practices, and reassessed user needs for the COVID‐19 emergency. Discusses changes to online education (and collaborative working) to provide user‐friendly services, researcher support tailored to need and re‐visioning library space. J.M.  相似文献