P专利研发中“加速化陷阱”现象的实证研究——以机械制造业上市公司三种专利产出为例/P P/FONT /P

本文基于资源基础观和研发“加速化陷阱”理论,利用111家中国机械制造业上市公司1999-2005年的发明专利、实用新型专利和外观专利的申请数据以及2001-2006年的财务数据,使用相关性分析和多元回归分析等方法,对专利产出与后续企业绩效的关系进行了实证检验。研究发现：发明专利及实用新型专利与主营业务利润的关系,实用新型专利及外观专利与主营业务收入的关系都表现为“倒U型”,表明过高水平的专利产出不但无法进一步改善企业绩效,反而会降低企业绩效,即专利研发中的“加速化陷阱”现象是存在的。本研究对于促进企业正确制定专利研发计划,提高研发活动的产出效率有着重要的指导意义。     

Kinematic and kinetic variability associated with the cable put and seated rotation assessments

ABSTRACT

When new protocols are developed, there is a requirement to investigate test–retest reliability of measures for valid use and interpretation of data in research and practice. Therefore, the aim of this investigation was to determine the inter-day reliability of the cable put and seated rotation assessment protocols. On three occasions, nine resistance-trained men performed cable puts and cable rotations at different loads between 6 and 42 kg on a commercially available cable cross over machine. Load stack movement was recorded using a PT5A linear position transducer from which all kinematic and kinetic variables were calculated. Reliability was excellent for peak velocity and displacement based on intraclass correlation coefficient (ICC) and coefficient of variation (CV) across the majority of loads and movements (cable put: ICC = 0.92 to 0.99, CV = 3.1% to 8.6%; cable seated rotation: ICC = 0.76 to 0.99, CV = ?1.7% to 16.1%). However, kinetic variables demonstrated inadequate reliability across the majority of days, loads and movements (ICC = 0.70, CV >10%). It was concluded that peak velocity is a reliable kinematic measure to assess muscular capability from cable put and seated rotation protocols; however, kinetic measures are too variable to provide reliable outputs across testing occasions.     

刚体转动实验中挡光片释放位置对β影响研究

在使用转动惯量仪测量刚体转动惯量实验中,很多实验资料都没有对挡光片释放位置作出具体的要求,导致了实验者认为挡光片处于不同释放位置时对实验是没有影响的。笔者通过实验测量出,当挡光片处于不同释放位置时,相应的角加速度也不同。因此,为保证常实验数据的可靠性,可将挡光片释放位置尽量靠近光电门以减小阻力矩的影响。     

创新人才培养方式,加速技能人才培养

人才是提效之根、强企之本、发展之源、和谐之水。城西供电分公司积极践行国网公司"四个创新""五个结合"的人才培养理念,以能力建设为核心,以培养高层次人才和创新型人才为重点,通过开展职业生涯规划,制定技能人才培养规划;推行技能导师制度,选拔优秀专家担任技能导师,通过"师带徒"一对一的强化训练,有针对性地滚动开展固强补弱培训;以技能竞赛和技术比武活动检验技能人员培养成效,助推技能人员快速成长。进而打造一支能够肩负历史使命、勇于承担社会责任的"政治强、业务精、纪律严、作风正"的高素质技能人才队伍。为公司发展提供人才支持,实现员工与企业共同发展。     

The CASE Programme Implemented Across the Primary and Secondary School Transition in Ireland

In the Irish education system, there is little continuity between the primary and secondary education systems. The transfer between these systems is particularly problematic in the area of science. In order to alleviate some of these problems, as well as to enhance the cognitive development of students, the Cognitive Acceleration through Science Education programme was adapted for use and implemented across the primary–secondary school transition in Ireland. The programme was delivered in a variety of ways across the two levels, including the teacher and researcher teaching the programmes individually and team-teaching arrangements. The results on cognitive development measures showed that the students who were taught the programme in primary and secondary school made significant gains, when compared to the non-intervention group. There were also gains evident for students who only received one part of the programme (i.e. in either primary or secondary school). The greater gains, in terms of effect size, were evident at secondary school. The rationale, methodology and results are detailed in this paper.     

优秀运动员皮艇K1-500 m加速阶段的速度构成研究

运用两台高速摄像机,对2005年全国皮划艇春季冠军赛中参加单人皮艇500m决赛的36名优秀男、女运动员的启航加速阶段进行跟踪扫描录像分析。结果显示:启航加速能力男子A(前1~9名)、B(前10~18名)2组无统计学意义,女子A、B组则有非常显著性差异;启航阶段男子A组的拉桨效果优于B组;女子A组桨频高于B组,B组启航时间和总成绩高度正相关;其余3组无统计相关意义。提示,启航阶段以提高每桨的划水效果获取艇速增加的技术更符合现代优秀运动员体能结构经济有效分配模式的技术要求。     

高水平400m自由泳比赛中“第1次加速”现象的思考

运用文献资料法、数理统计法和逻辑分析法,对近10年国内外优秀400 m自由泳运动员共111人次的决赛成绩进行分析,探讨该项目配速方案的总体特征和阶段特征,尤其是“第1次加速”现象,旨在对今后我国该项目训练与配速研究提供理论参考。结论:大多世界级选手途中游段都存在“第1次加速”现象;世界优秀选手的竞技水平与其比赛中该现象的出现概率及提升幅度呈正相关;目前我国优秀选手大赛中暂无“第1次加速;”产生该现象的原因可能包括生理生化、比赛战术、心理状态等3个方面。     

应用逆向动力学计算关节内力的可靠性分析

采用同步测力、测加速度和多机多分辨率摄像的技术,并对解析原始数据运用"积分平滑"等一系列手段,用以提高逆向动力学计算关节内力的精确性,并且与目前常规逆向动力学方法的计算结果相比较,探讨用这两种不同方法所得结果的可靠性.研究表明,当研究一侧肢体远侧环节受到较大外力作用时,只要测出外力与其压心位置,采用常规逆向动力学方法计算关节内力尚具有一定的可靠性;所采用的一些技术措施,能有效地提高计算的精确性和适应性.     

自然坐标系的意义

解决了关于自然坐标系的混乱状况。弧坐标没有意义。s根本不是弧坐标,而是路程。一切质点在无穷小时间dt内均绕曲率中心作圆周运动。牛顿第二定律在绝对空间任何一个方向上都是正确的。切线和法线都无方向,切线轴的正向为速度的方向。自然坐标系的目的不是确定其他质点在空间的位置,而是为了应用牛顿第二定律以解决实际问题。     

谈一道力学题的解

纠正了文献^[1]中的一个错误，用计算机作图求得一个力学难题的近似解。