简介：Thegreengovernment(public)procurementsystemplaysanimportantroleinachievingthepolicyobjectiveofenergysavingandenvironmentalprotection,andpromotinggreentechnologyprogressinenterprises.ThegreengovernmentprocurementstartscomparativelylateinChina,andtherearestillalotofproblemsinthelegalsystem,procurementstandards,organizationandmanagementsystem,informationcommunicationandmonitoringevaluationmechanismsandsoforth.Withinternationalexperienceastherefer...

简介：ThispaperpresentsacomparisonmechanismforasimpleprocurementauctionandgeneralizedNashbargainingsolutioninaprocurementcircumstance.Thebuyerwhohopestofulfillaprojecthastwooptions.First,shemayawardtheprojecttotheoldproviderwithanefficientqualitybybargaining.Second,shemaygivetheprojecttothefirmwhosubmitsthelowestbidthroughasimpleprocurementsecond-pricesealed-bidauctionwithapre-fixedquality.Wecomparetheexpectedrevenueintheauctionwiththedeterministicprofitofthebargaining.Indifferentparameterscases,wefindtheborderlinefunctionsbetweenthetwooptionswithrespecttothebuyer’sbargainingpowerandtheamountofbidders.Wealsocompareoursimpleprocurementauction(SPA)withtheoptimalmultidimensionalbidauctionbyChe(1993),andfindourmodelprotectsthebuyer’sprivatevaluationinformationbyforfeitingsomeprofits.Somepropertiesofthedifferencebetweenthetwoauctionsareproposed,especiallythereisnorevenuedifferencewhentheamountofbiddersapproachesinfinity.

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简介：Thispaperproposesaprocurementandproductionoutsourcingmodelsubjecttoadynamicpricesenvironment.Usingtheoptimalcontroltheoryweobtainthenecessaryconditionsoftheoptimalprocurementandproductionpolicy.Fromthestudyofoptimalcontrolconditions,wederivequalitativepropertiesoftheoptimalprocurementandproductiondecisionsforafewexemplifyingcases.Throughtheseresultsweareabletoprovidesomemanagerialimplicationsformanagerstomakerealdecisions.

简介：近期，AMP公司发布了用于ConpactPCIZ-PACK2mmHM针式插头的“静音对偶接触”新技术(QuietMateContactTechnology)。静音对偶接触可在不改变现有总线正常操作的情况下，将信号干扰降至最低。这种连接器最适于可热交换的高效系统，如高速通信设备等。

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简介：Inordertocombatillegalloggingandassociatedtradeandpromotesustainableforestmanagement,majordevelopedcountries,includingFrance,haveimplementedgreenprocurementpolicyforforestproducts.ThispaperdescribedthebackgroundofwhyFranceimplementsgreenprocurementpolicyforforestproducts,analyzedthebasiccontentofthepolicy,andmadeacomprehensiveassessmentoftheimpactofgreenprocurementpolicyonsuppliers,processors,eco-environmentandcompetitivenessofforestproduc...

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简介：摘要传统的免疫共沉淀测序（ChIP-seq）是研究蛋白-染色质相互作用的主流方法，由于ChIP-seq难以在低起始细胞量和单细胞样本上实施限制了其应用范围。近年来新发展起来的染色质酶切测序技术CUT&RUN和CUT&Tag展现出操作简单，背景低，可重复性高和要求的细胞起始量低等优点，有替代ChIP-seq进行蛋白-染色质相互作用研究的潜力，并有效提高了单细胞ChIP-seq的可行性。本文将就这类靶向染色质进行酶切测序的主要技术的发展和应用现状做简要综述。

简介：Weconsideranewsvendorproblemwithprice-dependentdemand,ineitheradditiveormultiplicativeformat.Thenewsvendorhastwomodesofpurchasing:regularorderingatthebeginningofthesellingseasonandemergencyordering(iftherealizeddemandexceedstheinitialorderquantity)attheendofthesellingseason.Bystochasticcomparisons,wesystematicallyinvestigatetheeffectsofdemandmagnitudeanddemandrandomnessonpricingandorderingquantitydecisionsaswellasexpectedprofitofthenewsvendor,underbothusualstochasticorder(firstorderstochasticdominance)andconvexorder(lessvariable).Ourkeyfindingsinclude:(i)incontrarytothecasewherepriceisexogenous,astochasticallylargerdemandshockmayevenleadtoalowerorderquantity;(ii)astochasticallylargerdemandshockleadstoahigherpricefortheadditivedemandcase,butmayleadtoalowerpriceforthemultiplicativedemandcase;(iii)astochasticallylargerdemandshockleadstoahigherexpectedprofitforbothdemandmodels;(iv)ingeneral,alessvariabledemandleadstoahigherexpectedprofitforbothdemandmodels;andfurthermore,alessvariabledemandshockhasnoeffectonpricefortheadditivedemandmodel,butleadstoahigherpriceforthemultiplicativedemandmodel.Theimplicationsofallthesefindingsforpricingandorderquantityarediscussedindetail.

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简介：摘要：本文以再现系统为例，从部件原理，到系统功能设计，深入浅出的阐述功能设计到实现的过程。让从业者更了解系统。

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简介：前言改善地球环境，减轻环境负担问题已得到广泛重视，欧洲共同体发布了对废弃电气和电子设备的WEEE指令和针对电气电子设备所使用的有害物质的限制指令（aonS指令）。为此，日本政府则提出了企业推行绿色采购，从过去企业采购过程中只注重质量（quaUty）、价格（cost）和交货期（delivery）三要素之外，必需增加环境要求。而液压气动产品中大部分属于电气、电子产品范围，尤其是气动产品。为此日本气动产品的主要生产企业，已开展绿色采购工作，在2005年东京的IFPEX国际流体动力展览会上，已展出了一些符合RollS和ISO14000标准的产品。