国家潮流能试验场选址决策指标体系与分析方法

国家潮流能试验场是潮流能开发利用技术领域的海上公共试验与服务平台。目前国内尚没有海上试验场的建设经验,系统的选址决策标准仍处于空白阶段。本文在对与试验场建设相关的影响因素进行分析与归纳总结的基础上,提出了国家潮流能试验场选址决策的指标体系和分析方法。通过选址方法的研究,对丰富完善国家海洋能试验场标准体系、加快推进国家海洋能试验场建设具有重要意义。     

关于建立波浪能发电装置标准体系的思考

本文主要是阐述波浪能发电装置标准制定的重要性;介绍国内外波浪能发电装置标准化现状;提出波浪能发电装置标准体系框架及标准编写建议。     

关于波浪能发电装置标准综合体规划的研究

本文对波浪能发电技术与标准现状进行了分析,针对波浪能发电装置标准综合体中涉及的协调机构、相关要素、内在联系与功能要求展开了研究,最后对波浪能发电装置标准综合体规划提出了对策建议,旨在推动波浪能发电装置标准化的建设,促进波浪能技术与产业的发展。     

我国海洋仪器设备海上试验场检测认证体系研究

海上试验场作为海洋仪器设备研发、检测等科研活动的公共服务平台，为海洋仪器设备质量的提高提供了强有力的技术支撑，海上试验场检测认证资质的获取将极大地提升检测和试验结果的社会公信力和影响力。本文通过分析海洋领域检测认证及国内外海上试验场现状，结合资质认定（CMA）和CNAS实验室认可要求，提出了我国海洋仪器设备海上试验场检测认证体系框架并对海洋领域国家/行业标准进行适用性分析，为后续海洋仪器设备海上试验场检测认证体系建设提供研究借鉴。     

挪威海格纳斯潜艇水声试验场测量设施分析

利用水声试验场对潜艇的水下辐射噪声进行测量和分析,是先进国家改善潜艇安静性的重要方法.位于挪威卑尔根附近的海格纳斯潜艇水声试验场,是德国、荷兰、丹麦、挪威等北约国家最重要的潜艇水声检测机构.本文介绍了该潜艇水声试验场的选址特点和主要测量设施,分析峡湾水域建设潜艇水声试验的利弊,分析航行试验场和静态试验场对水声试验场建设的不同作用,为我国水声试验场的建设提供参照.     

海洋能开发利用关键技术研究与示范重点项目

<正>一、申请内容本项目设6个课题,分别是:1.100kW漂浮式波浪能电站关键技术研究与示范2.100kW摆式波浪能电站关键技术研究与示范3.20kW海流能装置关键技术研究与示范4.150kW潮流能电站关键技术研究与示范     

挪威海格纳斯潜艇水声试验场测量设施综述

利用水声试验场对潜艇的水下辐射噪声进行测量和分析,是先进国家改善潜艇安静性的重要方法。位于挪威卑尔根附近的海格纳斯潜艇水声试验场,是德国、荷兰、丹麦、挪威等北约国家最重要的潜艇水声检测机构。本文介绍了该潜艇水声试验场的选址特点和主要测量设施,分析峡湾水域建设潜艇水声试验的利弊,分析航行试验场和静态试验场对水声试验场建设的不同作用,为我国水声试验场的建设提供参照。     

超大型数据资源长期保存系统数据组织标准研究

面对数字资源长期保存标准现状,结合国家图书馆的实际情况,本文研究提出遵循OAIS框架标准,兼容PREMIS和METS的国家图书馆长期保存数据组织标准,用于指导和规范国家数字图书馆长期保存项目的建设.     

我国生态文明标准体系构建初探

本文通过对我国及国外生态文明建设相关政策机制、试点情况调研及生态文明相关领域的标准化发展状况研究,提出标准化在支撑国家生态文明建设方面的战略定位与布局,指出我国生态文明建设标准化工作的目标任务,构建我国生态文明建设标准体系基础框架,明确标准化重点领域与重要标准创制计划,积极探索"标准化+生态文明"的服务模式,促进生态环境协同发展,全面支撑我国生态文明建设。     

波浪能资源评估标准中有关采标问题的探讨

采用国际标准是研制我国标准的两种方法之一。本文分析了采用国外先进标准《波浪能资源评估》的必要性,研究了使用重新起草法修改采用国外先进标准时对相关内容的处理,说明采标是紧盯国际前沿技术,快速提升我国波浪能资源评估水平的有效措施,对于提高我国波浪能产业的国际竞争力也具有重要意义。     

Standards for bullets and casings

The National Institute of Standards and Technology is developing reference standards through its Office of Law Enforcement Standards with funding provided by the National Institute of Justice. The standard reference materials are used by crime laboratories to verify that results obtained when using their protocols and methodologies meet legal requirements and that equipment is operating properly. The NIST Reference Materials 8240/8250 standard bullets and casings is an example of materials that will assist laboratories in calibrating their instruments and ensuring quality control.The Office of Law Enforcement Standards (OLES) at the National Institute of Standards and Technology (NIST) manages research in many different disciplines of forensic science. One of these projects supports the National Integrated Ballistics Information Network (NIBIN). NIST digitized six bullet signatures from samples provided by the Bureau of Alcohol, Tobacco, and Firearms (ATF) and the Federal Bureau of Investigation (FBI). Using these signatures as a virtual standard, NIST’s Instrument Shop manufactured 20 reference materials (RM) 8240 standard bullets using a numerically-controlled diamond turning machine. Test results show high reproducibility of the bullet signatures on standard bullets. NIST has also developed a new parameter for bullet signature comparisons, using autocorrelation functions, and proposed a diagram for tracing local ballistics measurements to the National Laboratory Center of the ATF and to the FBI. Using an electro-forming process, NIST has manufactured prototype standard casings and test results show high reproducibility for the casing signatures.     

Review of the mathematical background to the development of realistic load histories for fatigue testing relevant to tubular structures in the North Sea

Following the discovery of oil and gas, fixed welded tubular steel platforms were first installed in the North Sea in 1966. They are subjected to significant fatigue loads due to wave action. A report on proposed standard load histories was published in 1976. These were based on theoretical calculations. In 1979, increasing interest led to the formation of the Wave Action Standards History (WASH) Working Group. Strain gauge data for platforms in the North Sea were made available to the Working Group so later standard load histories were based on service data rather than theoretical calculations. Mathematical techniques used are reviewed, and some load histories are described as case studies. A framework was developed that could be used to formulate a particular standard load history but left open the option of incorporating alternative features, with relatively little additional work.     

Decreased Global 137Cs Fallout Background on an Inspected Territory as an Evidence for Searching for a Radiation Anomaly of a Clandestine Underground Nuclear Explosion or of an Artifact

Radiochemistry - It was found previously that the density of the soil contamination with 137Cs in some shafts on the Semipalatinsk Test Site appreciably decreased relative to the 137Cs global...     

科技平台标准体系构建研究

本文从标准体系构建的原则出发,根据科技平台建设、服务和运行的实际需求,提出了我国科技平台标准体系,给出了科技平台基础标准、科技平台通用标准和科技平台专用标准的内涵,阐述了科技平台标准类别.     

Metrological testing of road curvimeters and path-measuring devices

Test results are reported for road curvimeter of Evenness and Evenness-P together with Wave track measuring carts, and Profile complexes. Simulator testers have been developed for SIRK double track and have been manufactured, where stands allow verification of the parameter numbers with the required accuracy.     

Bayesian Additive Regression Tree Calibration of Complex High-Dimensional Computer Models

Complex natural phenomena are increasingly investigated by the use of a complex computer simulator. To leverage the advantages of simulators, observational data need to be incorporated in a probabilistic framework so that uncertainties can be quantified. A popular framework for such experiments is the statistical computer model calibration experiment. A limitation often encountered in current statistical approaches for such experiments is the difficulty in modeling high-dimensional observational datasets and simulator outputs as well as high-dimensional inputs. As the complexity of simulators seems to only grow, this challenge will continue unabated. In this article, we develop a Bayesian statistical calibration approach that is ideally suited for such challenging calibration problems. Our approach leverages recent ideas from Bayesian additive regression Tree models to construct a random basis representation of the simulator outputs and observational data. The approach can flexibly handle high-dimensional datasets, high-dimensional simulator inputs, and calibration parameters while quantifying important sources of uncertainty in the resulting inference. We demonstrate our methodology on a CO₂ emissions rate calibration problem, and on a complex simulator of subterranean radionuclide dispersion, which simulates the spatial–temporal diffusion of radionuclides released during nuclear bomb tests at the Nevada Test Site. Supplementary computer code and datasets are available online.     

A new tool for benchmarking cardiovascular fluoroscopes

This paper reports the status of a new cardiovascular fluoroscopy benchmarking phantom. A joint working group of the Society for Cardiac Angiography and Interventions (SCAI) and the National Electrical Manufacturers Association (NEMA) developed the phantom. The device has been adopted as NEMA standard XR 21-2000, 'Characteristics of and Test Procedures for a Phantom to Benchmark Cardiac Fluoroscopic and Photographic Performance' in August 2000. The test ensemble includes imaging-field geometry, spatial resolution, low-contrast iodine detectability, working thickness range, motion unsharpness, and phantom entrance dose. The phantom tests systems under conditions simulating normal clinical use for fluoroscopically guided invasive and interventional procedures. Test procedures rely on trained human observers.     

Ni-Al-Fe体系热爆反应活化能和反应级数的测定

本文测定了线性加热速率下的Ni50A120Fe30（wt％）体系热爆反应过程的DTA曲线．用差商法计算了该SHS热爆过程的活化能和反应级数,其结果与用燃烧被违法得到的数值基本一致．     

中国与东盟家用电冰箱能效标准和标识对比分析

对中国与东盟主要国家的家用电冰箱的定义、测试标准、最低能源性能标准和能效标识进行对比分析。这些国家制定的电冰箱能效标准和标识的测试基础基本相同,能效标识可分为中国采用的欧盟样式和东盟主要国家采用的澳大利亚样式两大类。从技术、经济、文化等角度分析发现,中国和东盟国家家用电冰箱能效标准和标识已具备一致化的可行性。