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GB/T 18277-2000 公路收费制式

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基本信息
标准名称:公路收费制式
英文名称:Highway toll collection mode
中标分类: 公路、水路运输 >> 交通管理 >> 交通控制系统
ICS分类: 社会学、 服务、公司(企业)的组织和管理、行政、运输 >> 运输 >> 道路运输
发布部门:国家质量技术监督局
发布日期:2000-12-18
实施日期:2001-09-01
首发日期:2000-12-18
作废日期:1900-01-01
主管部门:国家标准化管理委员会
提出单位:中华人民共和国交通部
归口单位:全国交通工程设施(公路)标准化技术委员会
起草单位:交通部公路科学研究所
起草人:杨光、闫晓领.唐勇、李纲、李爱民、钟纪楷
出版社:中国标准出版社
出版日期:2001-09-01
页数:6页
书号:155066.1-17611
适用范围

本标准确立了公路收费制式的概念及其分类,给出了合理选择收费制式的指导原则。本标准适用于各种收费公路和桥隧。城市收费道路可参照执行。

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所属分类: 公路 水路运输 交通管理 交通控制系统 社会学 服务 公司(企业)的组织和管理 行政 运输 运输 道路运输
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【英文标准名称】:StandardPracticeforDeterminingContrastSensitivityinRadioscopy
【原文标准名称】:射线检验中测定衬比灵敏度的标准实施规程
【标准号】:ASTME1647-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E07.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:contrastsensitivitygauge;gammaray;imageformation;imageprocessing;imagequalityindicator;line-pairspermillimeter;penetratingradiation;spatialresolution;X-ray;Contrastsensitivity;Gammaradiation;Imageanalysis;IQI(imagequalit
【摘要】:Thecontrastsensitivitygaugemeasurescontrastsensitivityindependentoftheimagingsystemspatialresolutionlimitations.Thethicknessrecessdimensionsofthecontrastsensitivitygaugearelargewithrespecttothespatialresolutionlimitationsofmostimagingsystems.Fourlevelsofcontrastsensitivityaremeasured:4%,3%,2%,and1%.Thecontrastsensitivitygaugeisintendedforuseinconjunctionwithahigh-contrastresolutionmeasuringgauge,suchastheEN462x2013;5DuplexWireImageQualityIndicator.Suchgaugesmeasurespatialresolutionessentiallyindependentoftheimagingsystem''scontrastsensitivity.Suchmeasurementsareappropriateforthequalificationandperformancemonitoringofradiographicandradioscopicimagingsystemswithfilm,realtimedevices,ComputedRadiography(CR)andDigitalDetectorArrays(DDA).Radioscopic/radiographicsystemperformancemaybespecifiedbycombiningthemeasuredcontrastsensitivityexpressedasapercentagewiththespatialresolutionexpressedinmillimetersofunsharpness.FortheEN462x2013;5spatialresolutiongauge,theunsharpnessisequaltotwicethewirediameter.Forthelinepairgauge,theunsharpnessisequaltothereciprocaloftheline-pair/mmvalue.Asanexample,animagingsystemthatexhibits2%contrastsensitivityandimagesthe0.1mmEN462x2013;5pairedwires(equivalenttoimaging5line-pairs/millimeterresolutiononaline-pairgauge)performsata2%x2013;0.2mmsensitivitylevel.AstandardmethodofevaluatingoverallradioscopicsystemperformanceisgiveninPracticeE1411andinEN13068x2013;1andforCRitcanbefoundinPracticeE2445.1.1Thispracticecoversthedesignandmaterialselectionofacontrastsensitivitymeasuringgaugeusedtodeterminetheminimumchangeinmaterialthicknessordensitythatmaybeimagedwithoutregardtospatialresolutionlimitations.1.2Thispracticeisapplicabletotransmitted-beamradiographicandradioscopicimagingsystemsutilizingX-rayandgammarayradiationsources.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.TheSIunitsgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetystatements,seeNIST/ANSIHandbook114Section8,CodeofFederalRegulations21CFR1020.40and29CFR1910.96.
【中国标准分类号】:H26
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语


Product Code:SAE J2723
Title:Engine Power Test Code - Engine Power and Torque Certification
Issuing Committee:Engine Power Test Code
Scope:This document specifies the procedure to be used for a manufacturer to certify the net power and torque rating of a production engine according to J1349 (Rev. 8/04) or the gross engine power of a production engine according to SAE J1995.Manufacturers who advertise their engine power and torque ratings as Certified to SAE J1349 or SAE J1995 shall follow this procedure. Certification of engine power and torque to J1349 or J1995 is voluntary, however, this power certification process is mandatory for those advertising power ratings as "Certified to SAE J1349".