科技特派员运行模式创新探索——以四川为例     

柴剑峰 《科技管理研究》2011,(18)

从科技特派员内部集成创新、外部整合创新、实施路径创新、动态管理创新四个维度,对实践中科技特派员能力集成、科技特派团、工业科技特派员、科技特派员预警反馈进行探索,并以四川为例,总结科技特派员运行模式的创新,以求促进科技特派员制度在全国的推广。  相似文献   

城市化、技术进步与城乡收入差距的动态分析   总被引：1，自引：0，他引：1  

贺建风  黄钦炼 《科技管理研究》2011,(14)

近年来中国城市化水平不断向前推进,技术进步程度日益提高,然而城乡收入差距却居高不下。为了深入分析这三者间的动态关系,基于向量自回归(VAR)模型,利用Granger因果检验和脉冲响应函数,对中国1985～2009年城市化、技术进步与城乡收入差距的关系进行动态分析。结果表明:城市化和技术进步是影响城乡收入差距的原因,对城乡收入差距的长期冲击效应均为正;城市化是推动技术进步发展的原因,反之,技术进步对城市化的影响效果并不显著。  相似文献   

我国民用飞机设计合作研究网络的实证研究——基于2000-2009年期刊论文的分析     

汤坚玉  万剑锋  陈琪 《科技管理研究》2011,31(8)

基于近十年发表的关于民用飞机设计的期刊论文,从科研人员之间以及和科研机构之间两方面分析我国在民用飞机设计领域的合作研究状况,针对研究结论,简要提出改善我国民用飞机设计合作研究的建议.  相似文献   

基于完全分解模型的中国万元GDP用水量变动及因素分析   总被引：7，自引：4，他引：3  

佟金萍  马剑锋  刘高峰 《资源科学》2011,33(10):1870-1876

本文引入Laspeyres指数及其完全分解方法思想,构建万元GDP用水量的完全分解模型,从产业和地区两个层面对我国1997年至2009年万元GDP用水量的变动进行分解分析。研究结果显示,1997年-2009年,我国万元GDP用水量呈显著下降趋势,技术进步和结构调整是推动其大幅下降的两个重要因素;在产业层面,技术进步引发...  相似文献   

Three-dimensional cellular focusing utilizing a combination of insulator-based and metallic dielectrophoresis     

Huang CT  Weng CH  Jen CP 《Biomicrofluidics》2011,5(4):44101-4410111

Particle focusing in microfluidic devices is a necessary step in medical applications, such as detection, sorting, counting, and flow cytometry. This study proposes a microdevice that combines insulator-based and metal-electrode dielectrophoresis for the three-dimensional focusing of biological cells. Four insulating structures, which form an X pattern, are employed to confine the electric field in a conducting solution, thereby creating localized field minima in the microchannel. These electrodes, 56-μm-wide at the top and bottom surfaces, are connected to one electric pole of the power source. The electrodes connected to the opposite pole, which are at the sides of the microchannel, have one of three patterns: planar, dual-planar, or three-dimensional. Therefore, low-electric-field regions at the center of the microchannel are generated to restrain the viable HeLa cells with negative dielectrophoretic response. The array of insulating structures aforementioned is used to enhance the performance of confinement. According to numerical simulations, three-dimensional electrodes exhibit the best focusing performance, followed by dual-planar and planar electrodes. Experimental results reveal that increasing the strength of the applied electric field or decreasing the inlet flow rate significantly enhances focusing performance. The smallest width of focusing is 17 μm for an applied voltage and an inlet flow rate of 35 V and 0.5 μl/min, respectively. The effect of the inlet flow rate on focusing is insignificant for an applied voltage of 35 V. The proposed design retains the advantages of insulator-based dielectrophoresis with a relatively low required voltage. Additionally, complicated flow controls are unnecessary for the three-dimensional focusing of cells.  相似文献   

Evaluation and simplification of risk factors in FIGO 2000 scoring system for gestational trophoblastic neoplasia: a 19-year retrospective analysis     

Weng  Yang  Liu  Yuanyuan  Benjoed  Chitapa  Wu  Xiaodong  Tang  Sangsang  Li  Xiao  Xie  Xing  Lu  Weiguo 《Journal of Zhejiang University. Science. B》2022,23(3):218-229

Objective

The International Federation of Gynecology and Obstetrics (FIGO) 2000 scoring system classifies gestational trophoblastic neoplasia (GTN) patients into low- and high-risk groups, so that single- or multi-agent chemotherapy can be administered accordingly. However, a number of FIGO-defined low-risk patients still exhibit resistance to single-agent regimens, and the risk factors currently adopted in the FIGO scoring system possess inequable values for predicting single-agent chemoresistance. The purpose of this study is therefore to evaluate the efficacy of risk factors in predicting single-agent chemoresistance and explore the feasibility of simplifying the FIGO 2000 scoring system for GTN.

Methods

The clinical data of 578 GTN patients who received chemotherapy between January 2000 and December 2018 were retrospectively reviewed. Univariate and multivariate logistic regression analyses were carried out to identify risk factors associated with single-agent chemoresistance in low-risk GTN patients. Then, simplified models were built and compared with the original FIGO 2000 scoring system.

Results

Among the eight FIGO risk factors, the univariate and multivariate analyses identified that pretreatment serum human chorionic gonadotropin (hCG) level and interval from antecedent pregnancy were consistently independent predictors for both first-line and subsequent single-agent chemoresistance. The simplified model with two independent factors showed a better performance in predicting single-agent chemoresistance than the model with the other four non-independent factors. However, the addition of other co-factors did improve the efficiency. Overall, simplified models can achieve favorable performance, but the original FIGO 2000 prognostic system still features the highest discrimination.

Conclusions

Pretreatment serum hCG level and interval from antecedent pregnancy were independent predictors for both first-line and subsequent single-agent chemoresistance, and they had greater weight than other non-independent factors in predicting single-agent chemoresistance. The simplified model composed of certain selected factors is a promising alternative to the original FIGO 2000 prognostic system, and it shows comparable performance.

  相似文献   

关于体育后备人才试点中学目标及管理若干问题的研究   总被引：2，自引：0，他引：2  

翁焕明  金钦昌  黄一飞 《浙江体育科学》1993,(6)

一个国家要在竞技体育舞台上保持长盛不衰,就必须拥有一定数量的优秀体育后备人才,其关键是抓好课余运动训练。体育后备人才试点中学是学校体育改革的产物,它在抓好课余运动训练,培养高层次的体育后备人才中有其自身的优势和长处。本文在调查的基础上对体育后备人才试点中学的办学性质、培养目标、领导体制等问题作了研究、探讨。  相似文献   

传统武术发展的新思路--关于民族传统体育专业对传统武术人才招生改革的思考   总被引：18，自引：0，他引：18  

邱丕相  翁信辉 《体育文化导刊》2005,(5):54-56

传统武术是中国武术的根,是民族传统文化的载体.在高等院校中很有必要加以继承和发展.传统武术与竞技武术是武术蓬勃发展的两翼,应比翼齐飞,共同发展.民族传统体育专业对传统武术人才招生改革意义重大,不仅有利于武术学科的完善与发展,而且有利于传统武术的水平提高及科学化、学科化的发展.  相似文献   

中文附盘图书管理的研究进展     

王亚勤  杜芳  高剑锋 《济宁师范专科学校学报》2007,28(3):84-86

根据附盘图书的特点,综述了对附盘图书的现有管理模式及缺陷、管理和利用、科学分类及处理等研究近况.  相似文献   

面向MIS对象设计与浏览对象设计实例     

瓮正科  杨晋峰 《新疆职业大学学报》1994,(2)

本文首先从对象和类的基本概念出发,论述了面向MIS对象设计的主要内容,指出MIS系统实质上是对象类系统的结论。然后,给出了一个对象类--浏览对象类的具体程序。  相似文献