国防计量认可复查评审中遇到的几个问题

在进行国防计量认可复查评审中，我们发现不少企事业单位在计量工作中存在着一些问题，特此提出以供探讨。1合理地建立企业最高计量标准，确保标准装置的准确度据笔者参与企业国防计量认可复查评审情况来看，有部分企业几年前建立的最高计量标准至今尚未使用，或者是因其它条件     

JJF1033-2016实施中的常见问题浅析

一、范围1.计量标准分社会公用计量标准(最高、次级)、部门计量标准(最高、次级)、企事业单位的计量标准(最高、次级)、计量授权部门的计量标准。不是所有的计量标准都要纳入计量标准的考核范围中。按照《计量法》的规定,只有社会公用计量标准(最高、次级),部门和企事业单位最高计量标准以及授权机构的计量标准纳入考核的范围,属于行政许可。     

ISO 10012:2003国际标准讲座第十六讲测量管理体系要求与法律法规要求(二)(续16)

3企业最高计量标准考核 中华人民共和国计量法规定:"地方各级计量部门、行业部门和企事业单位最高标准应经有关政府计量行政部门考核后方可使用."2005年1月14日修订颁布的<计量标准考核办法>明确规定,行业部门建立的最高计量标准由国家质量监督检验检疫总局主持考核.省级行业部门所属企事业单位建立的最高计量标准由当地省级质量技术监督局主持考核.无主管部门的企事业单位建立的最高计量标准,由企业工商注册地的质量技术监督局主持考核.     

应当重视最高计量标准的管理工作

应当重视最高计量标准的管理工作企事业单位的最高计量标准是该单位统一量值的依据；是保证全国量值准确一致的一项重要技术保证；国家技术监督局于１９９３年正式实施了《计量标准考核规范》（试行），使计量标准考核工作达到规范化。但是，近来由于种种原因，在计量标准...     

福州市计量所简介

福州市计量所成立于1 960年,位于福建省福州市美丽的福州西湖湖畔,是福建省质量技术监督局依法设置的法定计量检定技术机构,担负着福州市量值统一及量值传递溯源的任务,为贯彻执行《计量法》提供可靠的技术保证。本所负责建立福州市最高社会公用计量标准;负责开展强检计量器具的依法管理及检定工作;承担计量行政部门委托的计量产(商)品的质量监督检验、计量器具纠纷仲裁检定;承担定量包装商品净含量的抽查监督及检验工作;承担对企事业单位的最高标准的考核(复查)工作;承担对制造和修理计量器具许可证考核;承担对本市计量检测人员的培训考核…     

210项标准列入复查计划第3季度计量标准考核(复查)工作开始

本刊讯２００２年第３季度计量标准考核（复查）计划于７月１日下发。按照计划要求 ,中国计量科学研究院、国家标准物质研究中心、华北国家计量测试中心、国家高电压计量站、国家铁路罐车容积计量站、国防科技工业计量考核办公室等单位承担考核（复查）工作。广西计量测试研究所、黑龙江省计量检定测试所等３０多个单位的２１０项标准列入考核复查计划210项标准列入复查计划第3季度计量标准考核(复查)工作开始@计宣     

企事业单位最高计量标准的现状不容乐观

企事业单位的最高计量标准是“量传体系”中最重要的环节。（计量法）颁布以后，特别是（计量标准考核办法）实施后，企业根据自身的需要，纷纷建立了它们的最高计量标准装置，以满足生产、经营的需要。这些企事业最高计量标准的状况如何？不久前，笔者参与了对38家原二级、三级计量验收合格单位的计量执法检查，发现其现状不容乐观。据检查统计：在这38家企业中，原已考核合格发证的最高计量标准141项，分布在32家企业。建标单位占此次检查单位的84％左右；而现已封存或报停的10家企业的历项标准装置，分别是原建标企业和建标项目数的引．2…     

行业动态

正大港油田公司50项最高计量标准通过复查日前,大港油田公司13个计量检定站的50项最高计量标准装置,通过了计量部门考评复查。考评组按JJF1033-2008《计量标准考核规范》的要求进行了全面考评复查。经过考查,考评组对该公司计量标准管理给予了肯定,认为该公司计量软硬件达标,设备运行规范有效,达到了最高计量标准要求。同时也对该公司提出了建议和要求。下一步,该公司将以此次复评审为契机,     

建标后应该怎样保持原考核技术指标

按照《计量法》及《计量法实施细则》规定，经政府计量行政部门考核合格的社会公用计量标准，才能作为统一本地区量值的依据，对社会实施计量监督才具有公正作用和法律效力。经考核合格的部门、企事业单位的最高计量标准，才能作为统一本部门量值的依据，在本单位开展计量检定。因此，作为计量保证体系的一项重要工作，即计量标准考核（建标）随之产生。计量标准考核工作为计量检定、量值传递提供了技术和质量保证。对比计量标准考核前后的情况，可以看出，建标单位在建标过程中，对计量标准器及配套设备，技术资料和制度的完善，人员素质的…     

行业动态

<正>韶钢6项公司最高计量标准通过现场复查考核近日,韶钢6项公司最高计量标准通过现场复查考核。考评组由广东省计量科学研究院的2位专家组成,他们对韶钢计控部检定游标量具标准器组等6项长度计量标准进行了现场复查考核。     

凝固科学技术与材料

从凝固科学与实践发展的角度介绍了当前凝固材料体系的基本框架和凝固科学主要发展阶段的基本理论。作为材料科学与工程的基本组成，凝固科学技术正在现代科学理论的基础上针对传统材料的改性提高和新材料的发展需求，以控形、控构、控性为目标开展优质铸件的定向、晶体生长、快凝、深过冷及各种新型和超常领域凝固过程的研究，并介绍了其中某些方面和展望了可能的发展趋势。     

Development and challenges of planning and scheduling for petroleum and petrochemical production

Production planning and scheduling are becoming the core of production management, which support the decision of a petrochemical company. The optimization of production planning and scheduling is attempted by every refinery because it gains additional profit and stabilizes the daily production. The optimization problem considered in industry and academic research is of different levels of realism and complexity, thus increasing the gap. Operation research with mathematical programming is a conventional approach used to address the planning and scheduling problem. Additionally, modeling the processes, objectives, and constraints and developing the optimization algorithms are significant for industry and research. This paper introduces the perspective of production planning and scheduling from the development viewpoint.     

江澳两地高校文创设计的协同研究与商业实践

目的 探索江门世遗文化的传承、发展和转化的新思路,践行国家在《粤港澳大湾区发展规划》纲要中要求江门承担与港澳地区文化创意合作与开发任务的分工。方法 与澳门高校紧密合作,开展专业培训课程,以开平碉楼为例,从人文视角开展设计研究,梳理开平碉楼的文化脉络,把世遗文化的元素和其背后的文化融入文创产品中,提升文创产品的附加值,推动当地文创产业结构的变革。结果 两地高校构建了稳定的科研团队,开设长期有效的设计培训课程,与景区建立了研究协作关系,帮助景区构建了一套产销研的商业模式。结论 以跨区域高校合作为平台,以文创产品为抓手,依托江澳两地的资源优势,可以构建江门世遗文化全新的品牌形象,最终推动开平世遗文化的活化。     

Error and uncertainty in modeling and simulation

This article develops a general framework for identifying error and uncertainty in computational simulations that deal with the numerical solution of a set of partial differential equations (PDEs). A comprehensive, new view of the general phases of modeling and simulation is proposed, consisting of the following phases: conceptual modeling of the physical system, mathematical modeling of the conceptual model, discretization and algorithm selection for the mathematical model, computer programming of the discrete model, numerical solution of the computer program model, and representation of the numerical solution. Our view incorporates the modeling and simulation phases that are recognized in the systems engineering and operations research communities, but it adds phases that are specific to the numerical solution of PDEs. In each of these phases, general sources of uncertainty, both aleatory and epistemic, and error are identified. Our general framework is applicable to any numerical discretization procedure for solving ODEs or PDEs. To demonstrate this framework, we describe a system-level example: the flight of an unguided, rocket-boosted, aircraft-launched missile. This example is discussed in detail at each of the six phases of modeling and simulation. Two alternative models of the flight dynamics are considered, along with aleatory uncertainty of the initial mass of the missile and epistemic uncertainty in the thrust of the rocket motor. We also investigate the interaction of modeling uncertainties and numerical integration error in the solution of the ordinary differential equations for the flight dynamics.     

Density and viscosity of tetralin and trans-decalin

New measurements are reported for the density and viscosity of tetralin and trans-decalin. The density was determined from room temperature to 60°C for tetralin and to 95°C for trans-decalin. The kinematic viscosity was measured up to temperatures slightly above 100°C. Our results improve upon the values recommended by the American Petroleum Institute for these liquids.     

The Candela and Photometric and Radiometric Measurements

The national measurement system for photometric and radiometric quantities is presently based upon techniques that make these quantities traceable to a high-accuracy cryogenic radiometer. The redefinition of the candela in 1979 provided the opportunity for national measurement laboratories to base their photometric measurements on optical detector technology rather than on the emission from high-temperature blackbody optical sources. The ensuing technical developments of the past 20 years, including the significant improvements in cryogenic radiometer performance, have provided the opportunity to place the fundamental maintenance of photometric quantities upon absolute detector based technology as was allowed by the 1979 redefinition. Additionally, the development of improved photodetectors has had a significant impact on the methodology in most of the radiometric measurement areas. This paper will review the status of the NIST implementation of the technical changes mandated by the 1979 redefinition of the candela and its effect upon the maintenance and dissemination of optical radiation measurements.     

Creation and motion of dislocations and fracture in metal and silicon crystals

By making a step on one surface ( ) of a rectangular small paralellepiped copper crystal, dislocations could be created by the molecular dynamic method. The dislocation created was not a complete edge dislocation but a pair of Heidenreich-Shockley partial dislocations. Each time a dislocation was created, the stress on the surface was released. Small copper crystals having a notch were pulled (until fracture), compressed and buckled by use of the molecular dynamic method. An embedded atom potential was used to represent the interaction between atoms. Dislocations were created near the tip of the notch. A very sharp yield stress was observed. The results of high speed deformations of pure silicon small crystals using the molecular dynamics are presented. The results suggest that plastic deformation may be possible for the silicon with a high speed deformation even at room temperature. Another small size single crystal, the same size and the same surfaces, was compressed using molecular dynamic method. The surfaces are {110}, {112} and {111}. The compressed direction was [111]. It was found that silicon crystals are possible to be compressed with a high speed deformation. This may suggest that silicon may be plastically deformed with high speed deformation.     

SMC／BMC的回收与再利用

SMC／BMC废弃物对工业及环境造成了很大影响，指出了SMC／BMC回收再利用的紧迫性。通过对目前国际上SMC／BMC回收再利用的3种典型途径优缺点的对比，参照国外SMC／BMC回收再利用的先进方法，对我国SMC／BMC回收再利用提供了可行的建议．