光纤—数字散斑相关方法的原理和应用

对光导纤维—数字散斑相关方法进行了详细的理论分析和实验研究。作者根据相关搜索法的基本思想．按照ＭＳ４２１３型图像板的存取模式，用Ｃ语言编写了专门的相关识别程序。利用光纤完成了刚体（定轴转动圆盘）全场位移测量和变形体（三点弯曲梁）挠度全场测量的两个验证性实验，实验结果与理论值吻合较好。     

《东北师大学报》数学论文1980～1993年引文分析

运用文献计量学中的引文分析方法对《东北师大学报》（自然科学版）１４年中发表的数学论文所附引文进行了统计分析，定量描述了其引文量、类型、语种、时间分布及常用期刊文献源等。     

Precision Metrology of Micro Work-pieces on Their Tribological Performance with Error Compensation Method

The frictional properties of micro bearings have strong influence on the performance of the whole system because of tiny scale of micro-electromechanical system (MEMS). To develop micro bearings with low friction,it is important to evaluate the friction behaviors on the micro bearing. The testing system and the principle to evaluate the tribological performance of micromachining work-pieces under the load of mill Newton scale is introduced in paper “A new approach to measure the friction coefficient of mi...     

皮米测量技术及仪器

文章回顾了20世纪计量学和仪器仪表学科的成就,进一步讨论了21世纪该学科的发展趋势,由于科学技术发展对测量精度要求越来越高,预计达到皮米级精度,因此文章着重讨论在皮米测量技术及仪器的方向上,进一步研究的必要性与可能性.     

A Semi-Automatic Thickness Inspection Technique for Marine Propellers

This paper describes the design and development of a Semi-Automatic Precision Caliper System to measure the thickness of an outboard marine engine propeller blade. Several commonly used methods for measuring the thickness of a propeller blade are reviewed in this paper. These include the P rops Scan, 3D Vision System and Black Dog. However, the operating practices and availability of different facilities in industry necessitate a more cost-effect ive approach. An alternative method using a Semi-Auto...     

我国干细胞领域研究状况的计量分析

干细胞研究因其广阔的发展前景引起很多领域科学家的热切关注。基于Web ofScience中SCI数据库收录的我国干细胞领域研究成果为研究对象,从科学计量学角度,对我国干细胞领域成果的数量、分布、发展趋势及被引频次进行分析,以揭示我国在干细胞研究领域的活跃度及影响度状况。同时运用信息可视化软件Cite Space III进行文献关键词共引分析,揭示我国干细胞研究的前沿主题及热点领域。     

Improvements and New Evaluation of NIM4 Cesium Fountain Clock and Construction of NIM5 Clock in 2006

The NIM４cesium fountain clock has been operating stably and sub-continually since Aug．２００３．In this paper we present improvements on NIM４in２００５－２００６and the most recent evaluation for its shifts with an uncertainty of５E-１５．A ２２０days comparison between NIM４and GPS showed an agreement offrequency ２E-１４．Finally the construction of a NIM５transportable cesium fountain clock is briefly reported．     

Ultrafast optoelectronic technology for radio metrology applications

Ultrafast optoelectronic technology has been widely used in terahertz time domain spectrum, terahertz imaging technology, terahertz communication and so on, and great progress has been achieved in the past two decade. Recently, this innovative technology has been applied in radio metrology and supplied a potential and hopeful method to solve the existent challenges of calibration devices and equipments with bandwidth up to 100 GHz. This paper generally summarizes the emerging applications of the ultrafast optoelectronic technology in radio metrology. The main applications of this technology in calibrating broadband sampling oscilloscopes, the high-speed photodiodes and calibrating the electrical pulse generators are emphasized, and the testing of monolithic microwave integrated circuits is also presented.     

《光明日报》的学术研究价值

用文献计量学的方法表征了<光明日报>在学术研究中的特殊地位,揭示了不同类型的报纸文献在不同学科中学术作用的差异,理清了报纸文献作用于学术研究的一个重要事实:报纸文献对人文社会科学研究者比对自然科学和工程技术研究者更为重要.     

浅谈大学物理实验绪论课的规范性导教

针对大学物理实验绪论课教学中，学生难以准确理解的有些抽象化概念和名词，文章介绍了一种依据计量技术规范来解释各实验要素之间的数学模型方法，以帮助学生克服在理解测量不确定度评定及误差估算分析上的困难；并据此掌握测量结果表达中的有效位数的处理规则。