共查询到20条相似文献,搜索用时 62 毫秒
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多年来,广东科龙集团在企业内部大力推行IS09000质量管理的同时,也在不断完善和建立计量检测体系,贯彻执行ho100121标准c随着企业规模的不断扩大,科龙集团每年都要投入几千万元的资金,用于技术改造和技术引进项目,以及配备一些测量设备。测量设备管理已成为公司计量检测体系的重要组成部分。现在,全集团有近三万台(套)测量设备,由于许多测量设备属于进口设备,所以测量设备的策划管理尤为重要。1.划分职能,明确分工首先,根据GB/T19022-IS0100121标准中“测量设备策划”要素的要求,对测量设备策划进行计量职能分配,明确… 相似文献
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开展测量设备的周期检定,对于拥有测量设备类繁杂,数量庞大,专业性强的企事业单位来说,问题比较复杂,必须根据实际情况,建立科学的管理制度,建立合理的测量标准,编制适用的周检计划,对测量设备进行全面的管理,确保量值的准确一致,本结合我所的实际情况,对做好测量设备的周期检定谈一些粗浅的体会。 相似文献
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基于隐蔽的系统成败型数据的元件可靠性的极大似然估计和区间估计 总被引:4,自引:1,他引:3
考虑由3个独立工作的成败型元件组成的串联系统,利用隐蔽的系统寿命试验数据求元件可靠性的极大似然估计和区间估计,给出了数值例子。 相似文献
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计量检测设备校准周期的确定──学习ISO10012体会之二航空航天工业部杨长禄,杨国恩ISO10012-1是ISO9000系列标准的支撑性标准,是广大计量工作者贯彻ISO9000系列标准,使工业计量技术与管理与国际标准和惯例接轨的必修文件。ISO10... 相似文献
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企业计量检测设备的管理 总被引:1,自引:0,他引:1
青铜峡铝厂是一个拥有职工5983人 ,年产铝锭10 2万吨的大型企业。计量控制处统管全厂计量工作,现有职工126人。1989年获得国家一级计量单位合格证书 ;1996年通过国家级“完善计量检测体系”评审 ,获《完善计量检测体系合格证书》 ;2000年11月通过了ISO9000质量认证工作。一、企业计量检测设备的配置及作用每一个企业根据生产工艺、质量管理、经营管理、能源管理、物料管理需要配备一定数量的计量检测设备。其目的是用这些计量检测设备获得控制工艺、保证产品质量、提供经济核算所需要的科学数据。近年来 ,… 相似文献
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测量设备的计量周期是指按照规定程序对测量设备进行定期计量的时间间隔,一般为1年。随着中国空间站时代的逐渐到来,在轨测量设备运行时间需要多年以上,存在地面所说的设备计量超期使用问题,如何分析评估测量设备,合理确定计量周期、尽最大可能满足空间站需求变得较为迫切。本文结合中国未来空间站测量设备的实际特点,介绍了医监医保类设备确定计量周期的原则和方法,选择使用加权及总分评定法确定计量周期。本文既可为未来空间站设备计量周期确定提供参考,也可以为非强制检定设备确定计量周期提供参考。 相似文献
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正企业测量管理体系的关键是测量过程控制的有效性,该有效性主要体现在维持测量结果的可信度。为了确保测量结果的可信度,必须使测量设备处于满足企业测量过程规定的要求。通常情况下,测量设备的计量性能(主要指最大允许误差)应不大于被测量允许测量值(或公差范围)的1/3。为了确定使用中的计量仪器满足上述要求,就需要按规定的程序对测量设 相似文献
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周期检定是保障计量器具能够准确可靠地开展测量活动的重要手段.检定周期的长度影响计量器具测量活动的可靠性和计量工作的经济性.本文通过建立电子测量设备测量可靠性与使用时间关系的数学模型提出了利用可靠性模型确定电子测量设备检定周期的可靠性评估法.该方法可以有效地保证电子测量设备检定周期制定的科学性. 相似文献
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分析了机载400Hz三相交流供电系统相位测量的特点,常用测量方法的基本原理和存在问题,并提出有关提高测量精度的措施。 相似文献
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冶金企业在生产过程中会产生很多有毒有害气体,用于气体检测的报警器测量数据稳定和准确是安全生产的重要前提。本文阐述了一氧化碳报警器期间核查的必要性和方法,为冶金企业做好报警器期间核查提供参考。 相似文献
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Xueying Huang Liu Wang Huachun Wang Bozhen Zhang Xibo Wang Rowena Y. Z. Stening Xing Sheng Lan Yin 《Small (Weinheim an der Bergstrasse, Germany)》2020,16(15)
Implantable bioelectronics represent an emerging technology that can be integrated into the human body for diagnostic and therapeutic functions. Power supply devices are an essential component of bioelectronics to ensure their robust performance. However, conventional power sources are usually bulky, rigid, and potentially contain hazardous constituent materials. The fact that biological organisms are soft, curvilinear, and have limited accommodation space poses new challenges for power supply systems to minimize the interface mismatch and still offer sufficient power to meet clinical‐grade applications. Here, recent advances in state‐of‐the‐art nonconventional power options for implantable electronics, specifically, miniaturized, flexible, or biodegradable power systems are reviewed. Material strategies and architectural design of a broad array of power devices are discussed, including energy storage systems (batteries and supercapacitors), power devices which harvest sources from the human body (biofuel cells, devices utilizing biopotentials, piezoelectric harvesters, triboelectric devices, and thermoelectric devices), and energy transfer devices which utilize sources in the surrounding environment (ultrasonic energy harvesters, inductive coupling/radiofrequency energy harvesters, and photovoltaic devices). Finally, future challenges and perspectives are given. 相似文献
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Young H. Chun 《国际生产研究杂志》2016,54(19):5686-5696
A complex product is often inspected more than once in a sequential manner to ensure the product’s quality. Based on the number of defects discovered during each round of inspection process, we can estimate the number of defects still remaining in the product. For each defect, the probability that the defect will be detected during each inspection cycle is usually assumed to be a known ‘constant’. However, in many practical situations, some defects are easily detected, while others are much more difficult to identify. In this paper, we propose a ‘beta-geometric’ inspection model in which the heterogeneity in detection probability is described by a beta distribution. In a numerical study, we show that our more realistic inspection model clearly outperforms traditional estimation methods that are based on the assumption of a constant detection probability. 相似文献
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Mayank Kumar Jha Sanku Dey Refah Mohammed Alotaibi Yogesh Mani Tripathi 《Quality and Reliability Engineering International》2020,36(3):965-987
We consider the problem of estimating multicomponent stress-strength (MSS) reliability under progressive Type II censoring when stress and strength variables follow unit Gompertz distributions with common scale parameter. We estimate MSS reliability under frequentist and Bayesian approaches. Bayes estimates are obtained by using Lindley approximation and Metropolis-Hastings algorithm methods. Further, we obtain uniformly minimum variance unbiased estimates of the reliability when common scale parameter is known. Asymptotic, bootstrap confidence interval and highest posterior density credible intervals have been constructed. We perform Monte Carlo simulations to compare the performance of proposed estimates and also present a discussion. Finally, three real data sets are analyzed for illustrative purposes. 相似文献