共查询到20条相似文献,搜索用时 46 毫秒
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霍本方 《现代测量与实验室管理》2011,19(3):46-48
本文通过分析电子记录的特点,围绕实验室认可准则对记录的要求,探讨了电子记录的管理,提出了电子记录管理措施和方法,为实验室建立电子记录管理制度和信息管理系统提供参考。 相似文献
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通过对实验室资质认定评审准则、检测和实验室能力认可准则的学习,分析实验室认定与实验室认可对实验室记录控制与管理的要求,结合实际工作,总结了实验室记录编制与设计的经验与方法。 相似文献
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在校准实验室实践中,质量活动记录是实验室质量管理体系运行中的一项主要工作。其用于记载实验室所有质量活动的实施过程。由此亦可用作对实验室质量管理体系运行有效性的评价和证明,也可依此对实验室体系进行追溯或分析。通过对照各记录,可检查体系运行的有效性,通过分析各记录,可寻找发现不足,以得到改进。 相似文献
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JOhnP.Helfrich 《流程工业》2004,(5):86-86
生命科学家很早就感觉到.为了简化日常的实验室工作管理需要用电子实验室记录系统来保证准确及时的对知识成果进行存档和管理。本文将介绍电子实验室记录系统的先进性。 相似文献
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实验室原始记录用于为可追溯性提供文件,并提供验证、预防措施和纠正措施的证据,具有清晰、完整、真实和原始等特点,其通常分为质量记录和技术记录两种。质量记录是实验室质量体系活动的证据, 相似文献
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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. 相似文献
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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. 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
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. 相似文献
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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)。 相似文献
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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. 相似文献