Editorial Introduction     

CM 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1994,40(6):399-400

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强相关型产业转型企业技术能力发展的路径选择   总被引：4，自引：0，他引：4  

王德鲁  张米尔 《科学学与科学技术管理》2005,26(11):84-87

基于强相关型转型企业技术能力演进机理分析,提出原有技术能力挖掘和技术学习的转型企业技术能力培育模式;运用西方经济学的无差异曲线的分析方法,构建了培育模式选择模型。分析表明,转型企业技术能力再造战略的侧重点因技术资源禀赋不同而不尽相同,并应随企业不同的发展阶段做出相应的动态调整。  相似文献   

技术标准创立中的专利引用网络研究   总被引：1，自引：0，他引：1       下载免费PDF全文

冯永琴  张米尔  纪勇 《科研管理》2013,(7):71-77

随着技术构成的复杂化,技术标准涉及的必要专利迅速膨胀,形成了重叠交织的专利群。以WCDMA标准及其必要专利为研究样本,采用Ucinet6.0软件,以中心度为测度指标,分析技术标准涉及的专利权人的专利引用网络。研究表明,专利权人之间存在紧密连接、高凝聚力的专利引用网络,少数专利权人对网络内专利引用关系具有控制作用,高被引专利权人是专利引用网络形成的基础,在技术标准创立过程中发挥着重要作用。  相似文献   

Metabolic cost of stride rate, resistance, and combined use of arms and legs on the elliptical trainer     

Mier CM  Feito Y 《Research quarterly for exercise and sport》2006,77(4):507-513

We measured the effects of stride rate, resistance, and combined arm-leg use on energy expenditure during elliptical trainer exercise and assessed the accuracy of the manufacturer's energy expenditure calculations. Twenty-six men and women (M age = 29 years, SD = 8; M body weight = 73. 0 kg, SD = 15.2) participated. Twenty-two participants performed two tests, one without the arm poles (leg-only) and the other with arm poles (combined arm-leg). The other 4 participants performed one test without the arm poles. Both tests consisted of six 5-min stages (two stride rates, 110 and 134 stridesmin-1, and three resistance settings: 2, 5, and 8). Steady-state oxygen uptake (VO2), minute ventilation (VE), heart rate (HR) and rating of perceived exertion (RPE) were measured. Repeated measures analysis of variance determined higher (p <. 001) VO2, VE, and RPE, but not HR, during combined arm-leg versus leg-only exercise at any given intensity. Increases in stride rate and resistance increased VO2, VE, RPE, and HR with the greatest effect on VE and HR from Levels 5 to 8. The manufacturer's calculated energy expenditure was overestimated during both tests. Although the oxygen cost for elliptical trainer exercise was calculated to be approximately 0.1 mlxkg(-1) per stride and 0.7 mlxkg(-1) min-1 per resistance level, VO2 varied widely among individuals, possibly due to differences in experience using the elliptical trainer gender, and body composition. The elliptical trainer offers (a) a variety of intensities appropriate for most individuals and (b) both arm and leg exercise. Due to the wide variability in VO2, predicting the metabolic cost during elliptical trainer exercise for an individual is not appropriate.  相似文献   

面向专利预警的专利申请关键特征研究          下载免费PDF全文

张米尔  国伟  曲宁 《科研管理》2018,39(1):135-142

近年来,专利陷阱及后续的专利诉讼对技术创新的影响日益凸显,应对这一态势的重要手段是专利预警。专利申请书是最早公开的专利文献,以此为突破口,对申请书的特征字段进行分析,构建申请特征与专利诉讼的回归模型;研究表明,权利要求数、引用专利数和技术宽度与专利诉讼发生概率有显著的正向关系,是与专利诉讼密切相关的关键特征。因此,针对目标技术领域的相关专利,可以此回归模型为定量分析工具,筛选出易引发诉讼的高风险专利,从而利用最早公开的申请信息开展专利预警。  相似文献   

外围专利的测度方法及其应用研究     

张米尔  孟珊珊  田影 《科研管理》2014,35(3):155-160

技术专利正从保护手段演变为竞争工具,导致外围专利的涌现和专利泡沫的泛起,给专利管理和科技评价带来新的困扰。面对海量的专利数据,如何有效测度外围专利是亟待研究的问题;通过分析外围专利的生成机制和基础数据,基于典型专利族的差异,研究提出定量测度外围专利的方法,构建外围专利测度指数;在此基础上,以苹果公司为研究样本,对外围专利进行定量测度和分析。  相似文献   

毛细管气相色谱法定量测定深海鱼精油中的EPA．DHA     

邓青  彭永芳等 《昆明师范高等专科学校学报》1999,21(4):27-28

内标与外标相结合定量,毛细管柱气相色谱分析测定深海鱼精油中EPA．DHA的含量回收率为99．7％－100．51％。变异系数为2．49％－3．65％。  相似文献