《酶标分析仪》检定规程的修订说明和实验报告

介绍了JJG861-1994《酶标分析仪》检定规程的修订说明、修订原则和修订内容,提供了用于支撑修订工作的部分实验报告内容。     

关于标准铂电阻温度计的检定规程的修订

本文介绍标准铂电阻温度计规程修订的原因、依据和修订的内容以及要达到的目标。     

对规范做好食品卫生检验方法标准制修订工作的讨论

对食品卫生检验方法GB4789、GB5009系列标准制修订中,在修订计划、修订程序、标准属性、标准名称、检验方法选择、标准的结构与编写等方面存在的问题,进行深入的分析讨论,以促使食品卫生检验方法标准制修订工作更为规范,减少失误的发生。     

船舶测报标准修订的探讨

本文介绍了GB/T17838-1999《船舶海洋水文气象辅助测报规范》修订的主要内容,结合实际工作情况,指出存在的缺陷和问题,找出解决方法,并提出修订标准的几点建议,为标准的修订提供参考.     

运用质量管理体系实现对标准制修订管理的研究

本文通过对标准制修订管理问题的分析,提出了将质量管理体系引入标准制修订管理的总体思路,详述了标准制修订质量管理的关键因素,并对如何持续提升标准管理质量和水平提出了建议。     

危险驾驶行为量表的修订及信效度检验

目的修订驾驶员危险驾驶行为量表,并检验其信效度。方法在线发放450份危险驾驶行为量表和安全态度量表,收回有效问卷432份。结果修订后的危险驾驶行为量表共18个题目,分为过度自信、驾驶超速和违反交通规则三个维度。量表的内部一致性系数为0.93。修订后量表各维度与总分的相关系数在0.66~0.91之间,均P0.001。修订后的量表与安全态度量表各维度显著相关。这说明修订后量表相容效度高。结论修订后的危险驾驶行为量表具有良好的信效度,可作为测量我国驾驶员危险驾驶行为的一个工具。     

ISO/TC 176 关于修订 ISO900 标准的调查

三年前，ＩＳＯ计划对现在的ＩＳＯ９０００标准进行修订，并决定ＩＳＯ／ＴＣ１７６负责质量标准制定及修订工作。目前修订工作方针已确定，即将现有的质量保证模式ＩＳＯ９００１、ＩＳＯ９００２、ＩＳＯ９００３与质量管理指南标准ＩＳＯ９００４－１修订为“一对”标...     

浅析检验检疫标准制修订工作的存在问题及应对措施

本文梳理了检验检疫标准化工作的主要内容及标准制修订过程中的存在问题,详细阐述了标准制修订工作的关键环节和注意事项,提出了一些应对措施,以期为标准化工作者提高标准制修订质量、做好标准化工作提供参考。     

《气象标准制修订管理细则》修订解读

为进一步规范气象标准制修订工作,更好地发挥气象标准对气象事业发展的支撑引领作用,中国气象局成立工作组历经2年时间完成了对《气象标准制修订管理细则》（以下简称《细则》）的修订。《细则》修订工作坚持问题导向和目标导向,既贯彻国家规定,又兼具行业特色,全面总结和吸收了2016年以来气象标准化制修订管理经验,对标准立项、编制、征求意见、审查、批准、发布、复审、监督管理等各环节要求进一步明确和细化。《细则》的修订出台是落实《气象标准化改革工作方案》的重要体现,也将为气象标准化工作高质量发展奠定科学合理、切实可行的制度基础。本文详细阐述了《细则》的修订背景、修订目的意义、修订过程、修订思路及与上一版本的主要变化,供相关单位和人员学习使用。     

《计量器具新产品管理办法》的修订说明

根据国家质检总局法律法规制修订计划，计量司组织江西省质量技术监督局等单位对《计量器具新产品管理办法》（以下简称《办法》）进行了修订。2005年5月20日．总局第74号局令发布了经修订的《办法》。     

Estimation of Parameters of Universal Distribution of Moments of Failure of Products

A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

空压机轴承箱蜗壳温度探头油封改造

由于空压机进气侧轴承箱蜗壳温度探头密封效果不好,使空压机及其后续管道受到油污染。后将温度探头的O形圈密封改为骨架油封,杜绝了轴承箱漏油问题。文章简介空压机的结构和技术参数,详细介绍了骨架油封的制作和优点。     

Characteristics of mechanical properties of materials in studies of conditions of attainment of marginal states

It is shown that conditions of attainment of marginal states in the material of structural components are formulated on the basis of analysis of force and deformation criteria of formation and development of destruction. The parameters of these criteria are data on types of structural materials, standard and special characteristics of their mechanical properties, structural forms of considered elements of the equipment, and their operating stress loading. In this case, the construction of a system of state equations for describing interrelation of current damage, external actions, and responses to them is based on the concept of calculating variations in properties of materials at all stages of the design life cycle.     

Determination of parameters of microstructural inhomogeneity of deformation of metals by the method of modeling

The article suggests a method of evaluating the microstructural inhomogeneity of deformation of metals by modeling. The method includes the measurement of deformations of metal according to meshes of a dividing grid with small base and the calculation of the distribution parameters of microdeformations in model representation. It is shown that the modeling method makes it possible objectively to evaluate the microinhomogeneity of deformation of metals independently of the chosen mesh size of the dividing grid. New structural characteristics are introduced: the base and wave of variation expressing the degree of crumbling or amalgamation of metal grains by inhomogeneity of deformation.Translated from Problemy Prochnosti, No. 7, pp. 40–44, July, 1991.     

Analysis of the rate of propagation of the wave of change of boiling modes

An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate agreement is demonstrated between the derived relations and experimental data.     

水三相点复现的不确定度评定

水三相点是开尔文热力学温度的唯一基准点，也是ITS-90国际温标重要的定义固定点。因此，水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来，中国计量科学研究院研制出一系列高质量的水三相点容器，加强了水三相点的研究，为不确定度的分析提供了更为可靠的实验依据。同时，不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此，根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明，其扩展不确定度为0．16mK(k=2．69，P=0．99)。