论文外文文献翻译

本科毕业论文外文参考文献译文及原文学院经济与贸易学院专业经济学（贸易方向）年级班别2007级 1 班学号3207004154学生姓名欧阳倩指导教师童雪晖2010 年 6 月 3 日目录1 外文文献译文（一）中国银行业的改革和盈利能力（第1、2、4部分） (1)2 外文文献原文（一）CHINA’S BANKING REFORM AND PROFITABILITY（Part 1、2、4） (9)1概述世界银行（1997年）曾声称，中国的金融业是其经济的软肋。

当一国的经济增长的可持续性岌岌可危的时候，金融业的改革一直被认为是提高资金使用效率和消费型经济增长重新走向平衡的必要（Lardy，1998年，Prasad，2007年）。

事实上，不久前，中国的国有银行被视为“技术上破产”，它们的生存需要依靠充裕的国家流动资金。

但是，在银行改革开展以来，最近，强劲的盈利能力已恢复到国有商业银行的水平。

但自从中国的国有银行在不久之前已经走上了改革的道路，它可能过早宣布银行业的改革尚未取得完全的胜利。

此外，其坚实的财务表现虽然强劲，但不可持续增长。

随着经济增长在2008年全球经济衰退得带动下已经开始软化，银行预计将在一个比以前更加困难的经济形势下探索。

本文的目的不是要评价银行业改革对银行业绩的影响，这在一个完整的信贷周期后更好解决。

相反，我们的目标是通过审查改革的进展和银行改革战略，并分析其近期改革后的强劲的财务表现，但是这不能完全从迄今所进行的改革努力分离。

本文有三个部分。

在第二节中，我们回顾了中国的大型国有银行改革的战略，以及其执行情况，这是中国银行业改革的主要目标。

第三节中分析了2007年的财务表现集中在那些在市场上拥有浮动股份的四大国有商业银行：中国工商银行（工商银行），中国建设银行（建行），对中国银行（中银）和交通银行（交通银行）。

引人注目的是中国农业银行，它仍然处于重组上市过程中得适当时候的后期。

第四节总结一个对银行绩效评估。

机床的论文中英文资料外文翻译文献引言机床是制造业中重要的设备，用于加工各种零部件和制造产品。

本文汇总了关于机床的论文中英文资料的外文翻译文献，以供参考和研究使用。

外文翻译文献列表Author: John Smith John SmithYear: 2015 20152. Title: Advanced Techniques for Machine Tool Analysis Title: Advanced Techniques for Machine Tool AnalysisAuthor: Jennifer Lee Jennifer LeeYear: 2016 20163. Title: Intelligent Control Systems for Precision Machining Title: Intelligent Control Systems for Precision MachiningAuthor: David Wang David WangYear: 2018 2018Abstract: This paper focuses on intelligent control systems for precision machining. It discusses the integration of artificial intelligence and control algorithms to enhance the precision and performance of machine tools. The paper presents case studies on the application of intelligent control systems in precision machining processes. This paper focuses on intelligent control systems for precision machining. It discusses the integration of artificial intelligence and control algorithms to enhance the precision and performance of machine tools. The paper presents case studies on the application of intelligent control systems in precision machining processes.4. Title: Advances in Machining Processes for Hard-to-Machine Materials Title: Advances in Machining Processes for Hard-to-Machine MaterialsAuthor: Emily Chen Emily ChenYear: 2019 2019Abstract: This paper reviews recent advances in machining processes for hard-to-machine materials. It discusses the challenges associated with machining materials such as titanium, nickel-basedalloys, and ceramics. The paper highlights the development of new cutting tools, machining strategies, and technologies to improve the machinability of these materials. This paper reviews recent advances in machining processes for hard-to-machine materials. It discusses the challenges associated with machining materials such as titanium, nickel-based alloys, and ceramics. The paper highlights the development of new cutting tools, machining strategies, and technologies to improve the machinability of these materials.5. Title: Optimization of Machining Parameters for Energy Efficiency Title: Optimization of Machining Parameters for Energy EfficiencyAuthor: Michael Liu Michael LiuYear: 2020 2020Abstract: This paper explores the optimization of machining parameters for energy efficiency. It discusses the impact of machining parameters, such as cutting speed, feed rate, and depth of cut, on energy consumption in machining processes. The paper presents optimization techniques and case studies on reducing energy consumption in machining operations. This paper explores theoptimization of machining parameters for energy efficiency. It discusses the impact of machining parameters, such as cutting speed, feed rate, and depth of cut, on energy consumption in machining processes. The paper presents optimization techniques and case studies on reducing energy consumption in machining operations.结论以上是关于机床的论文中英文资料的外文翻译文献，希望对研究和了解机床技术的人员有所帮助。

毕业设计(论文）外文文献翻译院系：财务与会计学院年级专业：201＊级财务管理姓名:学号：132148*＊*附件: 财务风险管理【Abstract】Although financial risk has increased significantly in recent years risk and risk management are not contemporary issues。

The result of increasingly global markets is that risk may originate with events thousands of miles away that have nothing to do with the domestic market。

Information is available instantaneously which means that change and subsequent market reactions occur very quickly。

The economic climate and markets can be affected very quickly by changes in exchange rates interest rates and commodity prices。

Counterparties can rapidly become problematic。

As a result it is important to ensure financial risks are identified and managed appropriately. Preparation is a key component of risk management。

【Key Words】Financial risk，Risk management，YieldsI. Financial risks arising1.1What Is Risk1.1.1The concept of riskRisk provides the basis for opportunity. The terms risk and exposure have subtle differences in their meaning. Risk refers to the probability of loss while exposure is the possibility of loss although they are often used interchangeably。

毕业论文外文翻译要求
外国文献翻译是撰写毕业论文的重要环节之一，下面是一份要求700字的毕业论文外文翻译要求：
1. 翻译时间: 需在规定时间内完成翻译任务，以确保毕业论文
后续工作的顺利进行。

2. 原文准确性: 翻译必须准确无误，不得对原文进行任何删节、增补或变动。

3. 语言流畅度: 翻译应当具有良好的语言流畅度，不得过于生
硬或呆板。

4. 专业术语准确性: 翻译时要确保专业术语的准确性，避免词
义的混淆。

5. 语法错误及标点符号: 翻译应符合英文的语法规范，避免语
法错误和标点符号的错误使用。

6. 翻译风格: 翻译应当符合学术论文的要求，措辞恰当，语气
客观中立。

7. 格式要求: 翻译部分应与论文正文的格式一致，包括字体、
字号、行间距等。

8. 校对: 完成翻译后，需要进行一次仔细的校对工作，确保翻
译的正确性。

9. 原文附录: 翻译部分要同时附上原文，以便审查人员对翻译的准确性进行核对。

10. 翻译文档: 翻译文档要以电子文档的形式提交，确保方便审查人员查看。

以上要求旨在保证翻译的质量和准确性，对于撰写毕业论文非常重要。

翻译过程中，建议使用专业的翻译工具，如翻译记忆软件、专业词典等，以提高翻译的效率和准确性。

同时，积极与导师和专业领域的人进行交流和讨论，以解决翻译中的问题和困惑。

本科毕业论文外文文献翻译本科毕业论文外文文献翻译随着全球化的不断发展，人们对外文文献的需求也越来越高。

尤其是在本科毕业论文的撰写过程中，引用和翻译外文文献是不可或缺的一部分。

本文将探讨本科毕业论文外文文献翻译的重要性以及一些技巧和注意事项。

首先，翻译外文文献对于本科毕业论文的写作至关重要。

外文文献是学术研究中的重要参考资料，可以帮助我们了解国外学者在相关领域的研究成果和观点。

通过引用外文文献，我们可以对研究问题进行深入分析和论证，提高论文的学术价值和可信度。

然而，翻译外文文献并非易事。

首先，我们需要具备良好的外语水平，特别是对于所研究领域的专业术语要有一定的了解。

其次，在翻译过程中，我们需要保持准确性和一致性。

准确性是指翻译内容要忠实于原文，不失原意。

一致性是指在整个论文中使用相同的术语和翻译方法，避免混淆读者。

在翻译外文文献时，我们还要注意一些技巧和细节。

首先，我们可以使用在线翻译工具来辅助翻译，但不能完全依赖它们。

在线翻译工具通常会存在一些语法和词汇错误，需要我们进行修正和改进。

其次，我们可以参考一些翻译指南和词典，特别是针对所研究领域的专业词汇。

这些资源可以帮助我们更准确地理解和翻译外文文献。

此外，我们还需要注意一些常见的翻译错误。

首先是直译错误，即直接将外文句子逐字逐句地翻译成中文，忽略了语言和文化的差异。

这样的翻译通常会造成中文表达不通顺和不自然的问题。

其次是漏译和误译，即在翻译过程中遗漏了一些重要信息或者错误地理解了原文的意思。

这些错误会导致我们对外文文献的理解和引用出现偏差。

在翻译外文文献的过程中，我们还应该注重文化因素的考虑。

不同的语言和文化背景下，同一概念可能有不同的表达方式。

因此，我们需要在翻译过程中充分考虑到文化差异，避免产生歧义和误解。

最后，我们还需要在引用外文文献时遵守学术道德和规范。

我们应该正确标注引用文献的来源和作者，避免抄袭和侵权行为。

同时，我们还应该遵循学术规范，不对外文文献进行删减、修改或者歪曲，保持原文的完整性和准确性。

物联网外文文献翻译
物联网是一个由许多设备彼此连接而形成的网络，这些设备可以是智能手机、传感器、汽车等。

物联网允许设备之间相互通信和交换数据，从而实现更智能、更高效和更安全的生活。

在物联网领域，一些外文文献对于我们的研究和研究非常有帮助。

以下是一些常见的物联网外文文献：
- "A Survey on Internet of Things From Industrial Market Perspective"：这篇论文介绍了物联网的概念、应用和市场现状，并分析了物联网在未来的趋势。

- "Big Data Analytics for IoT-Based Smart Environments: A Survey"：文章描述了如何使用大数据分析来处理物联网设备所产生的数据，并探讨了这种技术如何应用于智能环境中。

- "A Review of Smart Cities Based on the Internet of Things Concept"：这篇综述了物联网在智慧城市中的应用，并对物联网在智慧城市化中的挑战和机遇进行了讨论。

通过阅读这些文献，我们可以更深入地了解物联网的应用、市场和发展趋势，并且了解如何将物联网技术应用到实际生活中。

自动门的外文文献及翻译Revised as of 23 November 2020毕业论文外文文献与翻译（一）AutomaticdooranditscontrolsystemintroductionAuthor：Unit:PrincetonUniversity755CollegeRoadEast,Princeton,NJ08540Productofhumancivilization,automaticdoorshavebeendozensofyearsofdevelopment,sofar,throughtheapplicationofPLCcontrolsystemandothertechnologyprodu cts,alreadyhaveanditscontroltechnology,formedthelargescaleautomaticdoorofthefamily.Anda ccordingtodifferentrequirements,formulatedaseriesofstandards.People'sRepublicofChinainthe 2005-12-01standardofChinaautomaticdoornumber,standardcontentmainlyinclude:rulesforbuildingthec lassificationofthevariouskindsofautomaticdoor,specifications,codes,materials,requirements,te stmethods,inspectionrulesandsigns,packaging,transportandstorage.Thisstandardappliestopush -pullautomaticdoorautomaticdoors(arc),foldtheflatopenautomaticdoors,automaticdoors,revolv ingdoors.Youmayrefertootherautomaticdoor.Havespecialrequirementsofautomaticdoors,stills houldseeitsrelatedandhumancivilizationisatwin,itisaccompaniedbythedevelopmentofhumanci vilizationandchatter.Forthousandsofyears,thedoorhasbeenasthepatronsaintofthehumansociety activities,intruderintheroom,andasachannelofhumansocialactivities,carryingthedoorandciviliz ation,pursuingpeopletoyearnforthegloryoftheotherdesireisendlesstocivilization.FromancientE gypttoRomantotoday'smodernsociety,canseethedoor,passiveisolationbarrierfunctionofthedoo ris,andthechannelroleistoensurethatonlyinthe21stcentury,thedoorevenmorehighlightedsafetyc oncept,emphasizestheeffectiveness:effectivelyprevent,passage,evacuation,andalsohighlightst heconceptofarchitecturalart,doorandbuildingandthesurroundingenvironmentcoordination,the harmoniouswhole.DooradvancedformsofautomaticdoororiginatedinEuropeandtheUnitedStates,inAugust18 02,theGermanstandardcompanysuccessfullydesignedanddevelopedtheworld'sfirstsensingauto maticdoors,doorlarge-scalespecializedproductionbeganinthe150yearsago,intheprocessofconstantdevelopmentandpe rfection,emergedalargenumberofscaleofprofessionalmanufacturers.Rapiddevelopmenttotoda y,hasformedacompletekinds,functionperfect,workmanshipfineautomaticdooroftheasearlyasm orethanadecadeagobegantorefertotheautomaticdoors,andapplyitinthehotel,airport,shoppingce nters,Banks,officebuildingsandotherlargeandmedium-sizedpublicplaces,forthesebuildingsaddedbrightbeautiful,chic,dooraccordingtothedifferentuse functionandcanbedividedintoautomaticslidingdoor,automaticdoor,automaticrevolvingdoor,au tomaticarcdoor,automaticfoldingdoor,etc.,includingflatdoorwithfeweroccasions,revolvingdo orduetotheexpensiveandverybig,onlycommonlyusedinhigh-gradehotels,inneedautomaticslidingdoorismostwidelyused,peoplegenerallysayautomaticdoor, automaticinductiondoorisslidingslidingdooristhemostcommonformofautomaticdoormachinea ddradaronbothinnersideandoutsideofthedoor,automaticdoorwhenthemancamenear,theradarbyemittingmicrowaveinductiontoman'sexistence,openthedoortothecontrollerasignal,thecontroll erthroughthedrivetoopenthedoor.Whenthemanbythedoor,andthenclosedtheformofinfraredsen sor,mainlythroughtheinfraredtofeelthetemperaturechangeswithinthespecifiedrange,whenpeop lewalkinto,microwaveinductiontheemissionsignalcontrolchangesinthedoor.Microwavesensorsandinfraredsensorsdifferenceismainly:microwavesensor,alsoknownas microwaveradar,reactiontothemovementoftheobject,andreactionspeed,suitableforwalkingspe ednormalpersonnelthroughtheplace,itscharacteristicisthatoncethedoornearthestaffdon'twantto gooutandmotionless,radarwillnolongerresponse,automaticdoorwillbeclosed,likelyclampingph enomenon.Infraredsensors,existinresponsetotheobject,regardlessofwhetherornotmobilestaff,a slongasinsensorscanningrange,itwillrespond.Reactionspeedisslowerthanthemicrowavesensor ofinfraredsensors.Accordingtodifferentrequirementsofsome,somemanufacturersintheproductionofautomat icdoorscanincreasesomepersonalfunction,facilitatethemanagementandmaintenance.Suchasfu zhoublueelectronicco.,LTD.,automaticdoor,ithasthefollowingcharacteristics:1,automaticdoor sensorsreacttothemovementofobjectsinmicrowave,sensitivityisadjustable,stableperformance! 2,automaticencryptiongathermulti-functionremotecontrolintoanorganicwhole,theinductiondoorforencryption,canavoidtheproject appearsonthewelsh,baddebts,etc.Phenomenon,thuseffectivelyprotecttheinterestsofdealers,atth esametime,canrealizetheremotecontroltoopenthedoor,alwaysopen,lock,unlock;Hasconnectedt othecardreader,fingerprint,homebutton,peripheraldevices,suchaselectriclockfunctions.3,safet ylightcaneffectivelyovercometheblindareaofinductiveprobesensorislessthan,sothattheinductio ndoorsafer.4,self-helpbankcardslotmachineoveralldesign,ABSelectroplatingshelldurableandconvenienttoinstall ,canmatchanybankATMcard,nocardcapacitylimits,importedalloyhead,superwear-resistanthighsensitivity,high(400)orlowresistance(300)Oefilecanbeused;Issuitablefortheself-servicebank.Microwavemodule5,automaticdoor,kickingmedallion,IDcardpassword,remotetra nsceivermodule,electriccaralarm,telescopicdoors,electronicdisplayscreen,motorcyclealarm.PLC(ProgrammableController,hereinafterreferredtoasPLC).PLCisintheorderofthetraditi onalcontrollerisintroducedonthebasisofmicroelectronicstechnology,computertechnology,auto maticcontroltechnologyandcommunicationtechnologytoformanewgenerationofindustrialcontr oldevice,thepurposeistoreplacerelay,executethesequencecontrolfunctionsuchaslogic,timing,c ounting,establishflexibleSPCsystem.Programmablecontrollerhasthestrongability,highreliabili ty,flexibleconfiguration,simpleprogramming,etc,isamajormeansofcontemporaryindustrialpro ductionautomationandautomationcontrolequipment.DuetotheadvantagesofPLCinautomaticco ntrol,thusiswidelyquotedintheautomaticdoorsystem.DuetothePLCinthedevelopment,therefore,fortheexactdefinitionismoredifficult.American electricalmanufacturersassociation(NEMA)afterfouryearsofresearchwork,in1980,officiallyna medProgrammableControllerPC(ProgrammableController),butaPersonalComputerPC(Person alComputer)inordertodistinguish,oftenreferredtoasPLCProgrammableController,andmakesad efinitionforPLC,ProgrammableControllerisakindofwithinstructionmemoryanddigitaloranalog input/outputinterface,withanoperationisgivenpriorityto,canfinishthelogic,sequence,timing,co untingandarithmetic,andotherfunctions,isusedtocontrolthemachineortheproductionprocessaut omationcontroldevice.In1985aseconddraft,andin1987thethirddraftofPLCinthefollowingdefinition:"aPLCisadigitaloperationoftheelectronicsystem,designedforindustrialenvironmentapplicationanddesign.It USESaprogrammemory,usedinitsinternalstorageimplementationlogicoperation,sequenceoper ation,timing,countingandarithmeticoperationinstruction,andcanthroughdigitaloranaloginputa ndoutput,controlvarioustypesofmachineryorproductionprocess.Programmablecontrollerandre latedperipheralequipment,shouldbeinaccordancewiththeeasilyandindustrialcontrolsystemasa whole,easytoexpanditsfunctiondesignshowsthatthedefinitionofPLCisakindofcanbedirectlyap pliedtotheindustrialenvironmentofthedigitalelectronicdevices,isbasedonmicroprocessor,comb inedwithcomputertechnology,automaticcontroltechnologyandcommunicationtechnology,inpr ocesscontrolandtheuser's"naturallanguage"programmingofasimple,convenientoperation,highr eliabilityofanewgenerationofgeneralindustrialcontroldevice.mainfunctionsofthePLC(1)theswitchcontrollogicandorderThisisthemostwidelyPLCapplication,thebasicsituation.Itsmainfunctionistocompleteswit chlogicandsequentiallogiccontrol,andthuscanrealizevariouscontrolrequirements.(2)thesimulationcontrol(A/DandD/Acontrol)Manycontinuousvariationintheprocessofindustrialproduction,theneedtocontrolthephysic alquantities,suchastemperature,pressure,flow,level,etc.,theseallbelongtoanalog.Longerthanint hepast,thePLClogiccontrol,analogcontrolmainlybyinstrumentordistributedcontrolsystem,PLC productspossessmuchnowdealingwiththiskindofanalogfunctions,andprogrammingandeasytou se.(3)thetiming/countingcontrolPLChasastrongtimingandcountingfunctions,itcanprovideuserswithdozensorevenhundred softimersandcounters.Forthetimer,timerintervalcanbesetbytheuser;Tocounter,ifneedtocountof highfrequencysignal,canchoosehighspeedcounter.(4)thesteppercontrolPLCprovidesuserswithacertainnumberofshiftregister,useshiftregistercaneasilyfinishstep pingcontrolfunction.(5)motioncontrolInthemechanicalprocessingindustry,programmablecontrollerandthecomputernumericalc ontrol(CNC)integratedtogether,tocompletemachinetoolmotioncontrol.(6)dataprocessingMostPLChasadifferentdegreeofthedataprocessingability,itnotonlycanperformarithmetic operations,datatransmission,butalsofordatacomparison,dataconversion,datashowstheprintope ration,alsocanundertakesomePLCfloatingpointarithmetic,andfunctionaloperation.(7)communicationnetworkPLChasthefunctionofcommunicationnetwork,itmakesPLCandbetweenPLCanduppercom puter,PLCandotherintelligencetoexchangeinformationbetweendevices,formaunifiedwhole,rea lizethecentralizedcontrol.PLCcansorapiddevelopment,inadditiontotheobjectivedemandoftheindustrialautomation, hasmanyuniqueadvantages.Itwellsolvedinthefieldofindustrialcontrolwidelyconcernaboutthere liable,safe,flexible,convenient,economicandotherissues.Itsmainfeaturesareasfollows:(1)highreliabilityReliabilityreferstotheaveragetrouble-freeworkingtimeprogrammablecontroller.Duetotheprogrammablecontrollerhasadoptedaseriesofhardwareandsoftwareanti-interferencemeasures,stronganti-interferenceability,MTBFreachingtensofthousandsofhours,canbedirectlyappliedtoindustrialpr oductionfieldhaveastronginterference.Programmablecontrolleristhemassesofusersrecognizedt obeoneofthemostreliableindustrialcontrolequipment.(2)controlfunctionisstrongAsmallprogrammablecontrollerwithhundredsofthousandsofprogrammingelementsavaila bleforuserstouse,paredwiththesamefunction ofrelaysystem,ithastheveryhighcostperformance.Programmablecontrollercanbethroughtheco mmunicationnetwork,realizesthedecentralizedcontrolandcentralizedmanagement.(3)theusereasytouseProgrammablecontrollerproductshavebeenstandardization,seriation,modularization,equi ppedwithawiderangeofvarioushardwaredevicesforuserselection,userscanconvenientlyflexible systemconfiguration,systemcomposedofdifferentfunctions,differentscale.Programmablecontr ollerwouldbeveryconvenientfortheinstallationofwiring,strongloadcapacity,candirectdrivegen eralsolenoidvalveandaccontactor.Thehardwareconfigurationisdetermined,youcanchangetheus erprogram,convenienttoquicklyadapttochangesinprocessconditions.(4)programmingconvenient,simpleLadderdiagramisaprogrammablecontrolleristhemostu sedprogramminglanguage,thesymbol,expressionwayandtherelaycircuitprinciplediagramissim dderdiagramlanguage,image,intuitive,simple,easytolearn,familiarwiththerelaycircuitdi agramoftheelectricaltechnicianjustspendafewdaystimecanbefamiliarwithladderdiagramlangu age,andusedtopreparetheuserprogram.(5)thedesign,installation,commissioningperiodisshortProgrammablecontrolforsoftwarefunctionreplacedtherelaycontrolsystemofalargenumber ofintermediaterelays,timerelays,counters,etc.,makethecontrolcabinetdesign,installation,wirin ggreatlyreducetheworkload,shortentheconstructionperiod.Programmablecontrolleroftheuserp rogramcanbesimulatedinthelaboratorydebugging,simulationdebugagainaftergoodwillinthepro ductionsiteforinstallationandwiringofPLCcontrolsystem,atthesceneofproblemsfoundinthetrac kingprocessbymodifyingtheprogramcansolve,greatlyshortenthedesigncycleandwasputintoope ration.(6)easytorealizemechanicalandelectricalintegrationProgrammablecontrollerissmallinsize,lightweight,lowpowerconsumption,vibrationresist ant,moistureproofandheatresistantcapabilityisstrong,makingthemeasytoinstallinsidethemachi neequipment,producemechanicalandelectricalintegrationproducts.NowwithPLCasthecontroll erofCNCequipmentanddevicehasbecomeatypicalrobot.自动门及其控制系统介绍作者：吉恩F.富兰克林单位：普林斯顿大学地址：新泽西州普林斯顿学院东路 755号邮编08540作为人类文明的产物，自动门已经发展了几十年，到目前为止，通过PLC控制系统和其他技术产品的应用，再加上其控制技术的成熟，自动门控制系统已经成型。

生物科学论文中英文资料外文翻译文献Carotenoid Biosynthetic Pathway in the Citrus Genus: Number of Copies and Phylogenetic Diversity of Seven GeneThe first objective of this paper was to analyze the potential role of allelic variability of carotenoid biosynthetic genes in the interspecifi diversity in carotenoid composition of Citrus juices. The second objective was to determine the number of copies for each of these genes. Seven carotenoid biosynthetic genes were analyzed using restriction fragment length polymorphism (RFLP) and simple sequence repeats (SSR) markers. RFLP analyses were performed with the genomic DNA obtained from 25 Citrus genotypes using several restriction enzymes. cDNA fragments of Psy, Pds, Zds, Lcyb, Lcy-e, Hy-b, and Zep genes labeled with [R-32P]dCTP were used as probes. For SSR analyses, two primer pairs amplifying two SSR sequences identified from expressed sequence tags (ESTs) of Lcy-b and Hy-b genes were designed. The number of copies of the seven genes ranged from one for Lcy-b to three for Zds. The genetic diversity revealed by RFLP and SSR profiles was in agreement with the genetic diversity obtained from neutral molecμLar markers. Genetic interpretation of RFLP and SSR profiles of four genes (Psy1, Pds1, Lcy-b, and Lcy-e1) enabled us to make inferences on the phylogenetic origin of alleles for the major commercial citrus species. Moreover, the resμLts of our analyses suggest that the allelic diversity observed at the locus of both of lycopene cyclase genes, Lcy-b and Lcy-e1, is associated with interspecific diversity in carotenoid accumμLation in Citrus. The interspecific differences in carotenoid contents previously reported to be associated withother key steps catalyzed by PSY, HY-b, and ZEP were not linked to specific alleles at the corresponding loci.KEYWORDS: Citrus; carotenoids; biosynthetic genes; allelic variability; phylogeny INTRODUCTIONCarotenoids are pigments common to all photosynthetic organisms. In pigment-protein complexes, they act as light sensors for photosynthesis but also prevent photo-oxidat ion induced by too strong light intensities. In horticμLtural crops, they play a major role in fruit, root, or tuber coloration and in nutritional quality. Indeed some of these micronutrients are precursors of vitamin A, an essential component of human and animal diets. Carotenoids may also play a role in chronic disease prevention (such as certain cancers), probably due to their antioxidant properties. The carotenoid biosynthetic pathway is now well established. Carotenoids are synthesized in plastids by nuclear-encoded enzymes. The immediate precursor of carotenoids (and also of gibberellins, plastoquinone, chlorophylls,phylloquinones, and tocopherols) is geranylgeranyl diphosphate (GGPP). In light-grown plants, GGPP is mainly derivedcarotenoid, 15-cis-phytoene. Phytoene undergoes four desaturation reactions catalyzed by two enzymes, phytoene desaturase (PDS) and β-carotene desaturase (ZDS), which convert phytoene into the red-colored poly-cis-lycopene. Recently, Isaacson et al. and Park et al. isolated from tomato and Arabidopsis thaliana, respectively, the genes that encode the carotenoid isomerase (CRTISO) which, in turn, catalyzes the isomerization of poly-cis-carotenoids into all-trans-carotenoids. CRTISO acts on prolycopene to form all-trans lycopene, which undergoes cyclization reactions. Cyclization of lycopene is abranching point: one branch leads to β-carotene (β, β-carotene) and the other toα-carotene (β, ε-carotene). Lycopene β-cyclase (LCY-b) then converts lycopene intoβ-carotene in two steps, whereas the formation of α-carotene requires the action of two enzymes, lycopene ε- cyclase (LCY-e) and lycopene β-cyclase (LCY-b). α- carotene is converted into lutein by hydroxylations catalyzed by ε-carotene hydroxylase (HY-e) andβ-carotene hydroxylase (HY-b). Other xanthophylls are produced fromβ-carotene with hydroxylation reactions catalyzed by HY-b and epoxydation catalyzed by zeaxanthin epoxidase (ZEP). Most of the carotenoid biosynthetic genes have been cloned and sequenced in Citrus varieties . However, our knowledge of the complex regμLation of carotenoid biosynthesis in Citrus fruit is still limited. We need further information on the number of copies of these genes and on their allelic diversity in Citrus because these can influence carotenoid composition within the Citrus genus.Citrus fruit are among the richest sources of carotenoids. The fruit generally display a complex carotenoid structure, and 115 different carotenoids have been identified in Citrus fruit. The carotenoid richness of Citrus flesh depends on environmental conditions, particμLarly on growing conditions and on geogr aphical origin . However the main factor influencing variability of caro tenoid quality in juice has been shown to be genetic diversity. Kato et al. showed that mandarin and orange juices accumμLated high levels of β-cryptoxanthin and violaxanthin, respectively, whereas mature lemon accumμLated extremely low levels of carotenoids. Goodner et al. demonstrated that mandarins, oranges, and their hybrids coμLd be clearly distinguished by theirβ-cryptoxanthin contents. Juices of red grapefruit contained two major carotenoids: lycopene and β-carotene. More recently, we conducted a broad study on the organization of the variability of carotenoid contents in different cμLtivated Citrus species in relation with the biosynthetic pathway . Qualitative analysis of presence or absence of the different compounds revealed three main clusters: (1) mandarins, sweet oranges, and sour oranges;(2) citrons, lemons, and limes; (3) pummelos and grapefruit. Our study also enabled identification of key steps in the diversification of the carotenoid profile. Synthesis of phytoene appeared as a limiti ng step for acid Citrus, while formation of β-carotene and R-carotene from lycopene were dramatically limited in cluster 3 (pummelos and grapefruit). Only varieties in cluster 1 were able to produce violaxanthin. In the same study , we concluded that there was a very strong correlation between the classification of Citrus species based on the presence or absence of carotenoids (below,this classification is also referred to as the organization of carotenoid diversity) and genetic diversity evaluated with bi ochemical or molecμLar markers such as isozymes or randomLy amplified polymorphic DNA (RAPD). We also concluded that, at the interspecific level, the organization of the diversity of carotenoid composition was linked to the global evolution process of cμLt ivated Citrus rather than to more recent mutation events or human selection processes. Indeed, at interspecific level, a correlation between phenotypic variability and genetic diversity is common and is generally associated with generalized gametic is common and is generally associated with generalized gametic disequilibrium resμLting from the history of cμLtivated Citrus. Thus from numerical taxonomy based on morphologicaltraits or from analysis of molecμLar markers , all authors agreed on the existence o f three basic taxa (C. reticμLata, mandarins; C. medica, citrons; and C. maxima, pummelos) whose differentiation was the resμLt of allopatric evolution. All other cμLtivated Citrus specie s (C. sinensis, sweet oranges; C. aurantium, sour oranges;C. paradi si, grapefruit; and C. limon, lemons) resμLted from hybridization events within this basic pool except for C. aurantifolia, which may be a hybrid between C. medica and C. micrantha .Our p revious resμLts and data on Citrus evolution lead us to propose the hypothesis that the allelic variability supporting the organization of carotenoid diversity at interspecific level preceded events that resμLted in the creation of secondary species. Such molecμLar variability may have two different effects: on the one hand, non-silent substitutions in coding region affect the specific activity of corresponding enzymes of the biosynthetic pathway, and on the other hand, variations in untranslated regions affect transcriptional or post-transcriptional mechanisms.There is no available data on the allelic diversity of Citrus genes of the carotenoid biosynthetic pathway. The objective of this paper was to test the hypothesis that allelic variability of these genes partially determines phenotypic variability at the interspecific level. For this purpose, we analyzed the RFLPs around seven genes of the biosynthetic pathway of carotenoids (Psy, Pds, Zds, Lcy-b, Lcy-e, Hy-b, Zep) and the polymorphism of two SSR sequences found in Lcy-b and Hy-b genes in a representative set of varieties of the Citrus genus already analyzed for carotenoid constitution. Our study aimed to answer the following questions: (a) are those genes mono- or mμLtilocus, (b) is the polymorphism revealed by RFLP and SSR markers inagreement with the general histor y of cμLtivated Citrus thus permitting inferences about the phylogenetic origin of genes of the secondary species, and (c) is this polymorphism associated with phenotypic (carotenoid compound) variations.RESΜLTS AND DISCUSSIONGlobal Diversity of the Genotype Sample Observed by RFLP Analysis. RFLP analyses were performed using probes defined from expressed sequences of seven major genes of the carotenoid biosynthetic pathway . One or two restriction enzymes were used for each gene. None of these enzymes cut the cDNA probe sequence except HindIII for the Lcy-e gene. Intronic sequences and restriction sites on genomic sequences werescreened with PCR amplification using genomic DNA as template and with digestion of PCR products. The resμLts indicated the absence of an intronic sequence for Psy and Lcy-b fragments. The absence of intron in these two fragments was checked by cloning and sequencing corresponding genomic sequences (data not shown). Conversely, we found introns in Pds, Zds, Hy-b, Zep, and Lcy-e genomic sequences corresponding to RFLP probes. EcoRV did not cut the genomic sequences of Pds, Zds, Hy-b, Zep, and Lcy-e. In the same way, no BamHI restriction site was found in the genomic sequences of Pds, Zds, and Hy-b. Data relative to the diversity observed for the different genes are presented in Table 4. A total of 58 fragments were identified, six of them being monomorphic (present in all individuals). In the limited sample of the three basic taxa, only eight bands out of 58 coμLd not be observed. In the basic taxa, the mean number of bands per genotype observed was 24.7, 24.7, and 17 for C. reticμLata, C. maxima, and C. medica, respectively. It varies from28 (C. limettioides) to 36 (C. aurantium) for the secondary species. The mean number of RFLP bands per individual was lower for basic taxa than for the group of secondary species. This resμLt indicates that secondary species are much more heterozygous than the basic ones for these genes, which is logical if we assume that the secondary species arise from hybridizations between the three basic taxa. Moreover C. medica appears to be the least heterozygous taxon for RFLP around the genes of the carotenoid biosynthetic pathway, as already shown with isozymes, RAPD, and SSR markers.The two lemons were close to the acid Citrus cluster and the three sour oranges close to the mandarins/sweet oranges cluster. This organization of genetic diversity based on the RFLP profiles obtained with seven genes of the carotenoid pathway is very similar to that previously obtained with neutral molecμLar markers such as genomic SSR as well as the organization obtained with qualitative carotenoid compositions. All these resμLts suggest that the observed RFLP and SSR fragments are good phylogenetic markers. It seems consistent with our basic hypothesis that major differentiation in the genes involved in the carotenoid biosynthetic pathway preceded the creation of the secondary hybrid species and thus that the allelic structure of these hybrid species can be reconstructed from alleles observed in the three basic taxa.Gene by Gene Analysis: The Psy Gene. For the Psy probe combined with EcoRV or BamHI restriction enzymes, five bands were identified for the two enzymes, and two to three bands were observed for each genotype. One of these bands was present in all individuals. There was no restriction site in the probe sequence. These resμLts lead us to believe that Psy is present at two loci,one where no polymorphism was found with the restriction enzymes used, and one that displayed polymorphism. The number of different profiles observed was six and four with EcoRV and BamHI, respectively, for a total of 10 different profiles among the 25 individuals .Two Psy genes have also been found in tomato, tobacco, maize, and rice . Conversely, only one Psy gene has been found in Arabidopsis thaliana and in pepper (Capsicum annuum), which also accumμLates carotenoids in fruit. According to Bartley and Scolnik, Psy1 was expressed in tomato fruit chromoplasts, while Psy2 was specific to leaf tissue. In the same way, in Poaceae (maize, rice), Gallagher et al. found that Psy gene was duplicated and that Psy1 and notPsy2 transcripts in endosperm correlated with endosperm carotenoid accumμLation. These resμLts underline the role of gene duplication and the importance of tissue-specific phytoene synthase in the regμLation of carotenoid accumμLation.All the polymorphic bands were present in the sample of the basic taxon genomes. Assuming the hypothesis that all these bands describe the polymorphism at the same locus for the Psy gene, we can conclude that we found allelic differentiation between the three basic taxa with three alleles for C. reticμLata, four for C. maxima, and one for C. medica.The alleles observed for the basic taxa then enabled us to determine the genotypes of all the other species. The presumed genotypes for the Psy polymorphic locus are given in Table 7. Sweet oranges and grapefruit were heterozygous with one mandarin and one pummelo allele. Sour oranges were heterozygous; they shared the same mandarin allele with sweet oranges but had a different pummelo allele. Clementine was heterozygous with two mandarin alleles; one shared with sweetoranges and one with “Willow leaf” mandarin. “Meyer” lemon was heterozygous, with the mandarin allele also found in sweet oranges, and the citron allele. “Eureka”lemon was also heterozygous with the same pummelo allele as sour oranges and the citron allele. The other acid Citrus were homozygous for the citron allele.The Pds Gen. For the Pds probe combined with EcoRV, six different fragments were observed. One was common to all individuals. The number of fragments per individual was two or three. ResμLts for Pds led us to believe that this gene is present at two loci, one where no polymorphism was found with EcoRV restriction, and one displaying polymorphism. Conversely, studies on Arabidopsis, tomato, maize, and rice showed that Pds was a single copy gene. However, a previous study on Citrus suggests that Pds is present as a low-copy gene family in the Citrus genome, which is in agreement with our findings.The Zds Gene. The Zds profiles were complex. Nine and five fragments were observed with EcoRV and BamHI restriction, respectively. For both enzymes, one fragment was common to all individuals. The number of fragments per individual ranged from two to six for EcoRV and three to five for BamHI. There was no restriction site in the probe sequence. It can be assumed that several copies (at least three) of the Zds gene are present in the Citrus genome with polymorphism for at least two of them. In Arabidopsis, maize, and rice, like Pds, Zds was a single-copy gene .In these conditions and in the absence of analysis of controlled progenies, we are unable to conduct genetic analysis of profiles. However it appears that some bands differentiated the basic taxa: one for mandarins, one for pummelos, and one for citrons with EcoRV restriction and one for pummelos and onefor citrons with BamHI restriction. Two bands out of the nine obtained with EcoRV were not observed in the samples of basic taxa. One was rare and only observed in “Rangpur” lime. The other was found in sour oranges, “V olkamer” lemon,and “Palestine sweet” lime suggesting a common ancestor for these three genotypes.This is in agreement with the assumption of Nicolosi et al. that “V olkamer” lemon resμLts from a complex hybrid combination with C. aurantium as one parent. It will be necessary to extend the analysis of the basic taxa to conclude whether these specific bands are present in the diversity of these taxa or resμLt from mutations after the formation of the secondary species.The Lcy-b Gene with RFLP Analysis.After restriction with EcoRV and hybridization with the Lcy-b probe, we obtained simple profiles with a total of four fragments. One to two fragments were observed for each individual, and seven profiles were differentiated among the 25 genotypes. These resμLts provide evidence that Lcy-b is present at a single locus in the haploid Citrus genome. Two lycopene β-cyclases encoded by two genes have been identified in tomato. The B gene encoded a novel type of lycopene β-cyclase whose sequence was similar to capsanthin-capsorubin synthase. The B gene expressed at a high level in βmutants was responsible for strong accumμLation ofβ-carotene in fruit, while in wild-type tomatoes, B was expressed at a low level.The Lcy-b Gene with SSR Analysis. Four bands were detected at locus 1210 (Lcy-b gene). One or two bands were detected per variety confirming that this gene is mono locus. Six different profiles were observed among the 25 genotypes. As with RFLPanalysis, no intrataxon molecμLar polymorphism was found within C. Paradisi, C. Sinensis, and C. Aurantium.Taken together, the information obtained from RFLP and SSR analyses enabled us to identify a complete differentiation among the three basic taxon samples. Each of these taxons displayed two alleles for the analyzed sample. An additional allele was identified for “Mexican” l ime. The profiles for all secondary species can be reconstructed from these alleles. Deduced genetic structure is given in. Sweet oranges and clementine were heterozygous with one mandarin and one pummelo allele. Sour oranges were also heterozygous sharing the same mandarin allele as sweet oranges but with another pummelo allele. Grapefruit were heterozygous with two pummelo alleles. All the acid secondary species were heterozygous, having one allele from citrons and the other one from mandarins except for “Mexican” lime, which had a specific allele.柑桔属类胡萝卜素生物合成途径中七个基因拷贝数目及遗传多样性的分析摘要：本文的首要目标是分析类胡萝卜素生物合成相关等位基因在发生变异柑橘属类胡萝卜素组分种间差异的潜在作用；第二个目标是确定这些基因的拷贝数。

1 . Introduction To Objects1.1The progress of abstractionAll programming languages provide abstractions. It can be argued that the complexity of the problems you’re able to solve is directly related to the kind and quality of abstraction。

By “kind” I mean，“What is it that you are abstracting?” Assembly language is a small abstraction of the underlying machine. Many so—called “imperative” languages that followed （such as FORTRAN，BASIC, and C) were abstractions of assembly language。

These languages are big improvements over assembly language，but their primary abstraction still requires you to think in terms of the structure of the computer rather than the structure of the problem you are trying to solve。

The programmer must establish the association between the machine model (in the “solution space，” which is the place where you’re modeling that problem, such as a computer) and the model of the problem that is actually being solved (in the “problem space,” which is the place where the problem exists). The effort required to perform this mapping, and the fact that it is extrinsic to the programming language，produces programs that are difficult to write and expensive to maintain，and as a side effect created the entire “programming methods” industry.The alter native to modeling the machine is to model the problem you’re trying to solve。

第 1 页中英文对照资料外文翻译文献原 文To image edge examination algorithm researchAbstract ：Digital image processing took a relative quite young discipline,is following the computer technology rapid development, day by day obtains th widespread application.The edge took the image one kind of basic characteristic,in the pattern recognition, the image division, the image intensification as well as the image compression and so on in the domain has a more widesp application.Image edge detection method many and varied, in which based on brightness algorithm, is studies the time to be most long, the theory develo the maturest method, it mainly is through some difference operator, calculates its gradient based on image brightness the change, thus examines the edge, mainlyhas Robert, Laplacian, Sobel, Canny, operators and so on LOG 。

行政管理公共管理论文中英文外文翻译文献中英文外文翻译文献The New Public Management SituationNo doubt, many countries in the world, and both developed countries and developing countries, in the late 1980s and early 1990s began a continuous public sector management reform movement. The reform movement is still in many aspects government continue to the organization and management of the influence. People in these reforms view repudiating them. Critics especially in Britain and the United States, critics say the new mode of various problems exist, but also does not have the international prevailing reform of public management, could not be called paradigm. Criticism from almost every aspect of the change. Most of the academic criticism belong to the mouth. Different schools of thought in detail discussion, The academic journal articles and abstraction, from reality. At the same time, in the practice of public management and implementation of the reform and the change. As I in other articles in the thought, in most countries, the traditional public administrative mode for public management mode has been replaced. The reform of public department responded to the realities of several interrelated problems, including: the function of public sector provide public services of low efficiency, Economic theory of change, Private sector related changes impact of globalization, especially as a kind of economic power, Technology changes made decentralization and better control globally becomes possible. The administrative management can be divided into three stages: the development of distinct phases, and public administration before traditional pattern and public management reform stage. Each stage has its ownmanagement mode. From a stage of transition to the next stage is not easy, from the traditional public administration to public administration has not yet completed the transition. But it was only a matter of time. Because the new mode of theoretical basis is very strong. The new public management movement ", "although this name, but it is not only a debate in the booming, and in most developed countries have taken the best management mode of expression. The traditional administrative mode than it's age is a great reform, but that time has passed.A traditional patternObviously, in the late 19th century bureaucracy system theory, not sound already exists some form of administrative management. Public administration has a long history, and it is the concept of a government and the rise of civilization as history. As the case Glad2den Osama bin laden (point), a model of administrative since the government appears has existed. First is endowed with founder or leader, then is the social or administrative person to organizers of eternity. Administration management or business is all in social activities, although not among factors, but the glow of social sustainable development is of vital importance. Recognized administrative system in ancient Egypt is already exists, its jurisdiction from the Nile flooding caused by the year to build the pyramids irrigation affairs. China is adopted in the han dynasty, Confucian norms that government should be elected, not according to the background, but according to the character and ability, the government's main goal is to seek the welfare of the people. In Europe, various empire - Greek, Roman, and the holy Roman, Spain's administrative empire, they first by the central through various rules and procedures. Weber's thought, "modern" medieval countries develop simultaneously with "bureaucratic management structure development". Although these countries in different ways, but they have common features, it can be called before modern. Namely, the administrative system of early essence is the personification of, or the establishment in Max Weber's "nepotism" basis, i.e. to loyal to the king or minister certain human foundation, not is personified, With allegiance to the organization or individual basis rather than for the foundation. Although thereare such a viewpoint that administration itself not only praise from traditional mode, the characteristic of early but often leads to seek personal interests corruption or abuse of power. In the early administrative system, we now feel very strange approach has the functions of government administration is generally behavior. All those who walk official tend to rely on friends or relatives for work or buy officer, which means the money to buy the first officer or tax officials, and then out to the customer to money, which is the first to buy officer recovery investment cost, and can make a fortune. America in the 19th century FenFei system of "political parties" means in the ruling changed at the same time, the government of all administrative position is changed. Modern bureaucracy is before "personal, traditional, diffusion and similar and special", and according to the argument, modern Weber bureaucracy is "impersonal, rational, concrete, achievement orientation and common". Personalized government is often inefficient: nepotism means incompetent not capable person was arranged to positions of leadership, FenFei political corruption, in addition to making often still exist serious low efficiency. The enormous success of traditional administrative pattern that early practice looks strange. Specialization and not politicized administrative in our opinion is so difficult to imagine that trace, there exist other system. Western administrative system even simple selection of officials to pass the exam, until 1854, Britain and north G..M. Trevelyan report after Northcote - began to establish in China, although the system has long passage.The traditional public administrative patternIn the late 19th century, additionally one kind of pattern on the world popular, this is the so-called traditional administrative pattern. Its main theoretical basis from several countries, namely, the American scholars and Germany Woodrow Wilson of Max Weber's, people put their associated with bureaucracy model, Frederick Tyler systematically elaborated the scientific management theory, the theory of the private sector from America, for public administration method was provided. And the other theorists, Taylor without focusing on public sector, but his theory was influential in this field. The three traditional public administration mode is theorist of main effect.In other countries, plus G..M. Trevelyan and North America, the state administration of administrative system, especially the Wilson has produced important influence. In the 19th century, the north G..M. Trevelyan and put forward through the examination and character, and appointed officials put forward bias and administrative neutral point of view. The traditional administrative pattern has the following features:1. The bureaucracy. The government shall, according to the principle of bureaucratic rank and organization. The German sociologist Max Weber bureaucracy system of a classic, and analysis. Although the bureaucracy in business organizations and other tissues, but it is in the public sector got better and longer.2. The best way of working and procedures are in full manual detail codes, for administrative personnel to follow. Strictly abide by these principles will run for the organization provides the best way.3. Bureaucratic service. Once the government policy areas in, it will be through the bureaucracy to provide public products and service providers.4. In political and administrative two relations, political and administrative managers generally think of administrative affairs can be separated. Administration is the implement instruction, and any matter policy or strategic affairs shall be decided by the political leaders, which can ensure that the democratic system.5. Public interests are assumed to individual civil servants, the only motive for public service is selfless paying.6. Professional bureaucracy. Public administration is viewed as a kind of special activities, thus requirements, obscure, civil servants neutral equal employment and lifelong service to any political leaders.7. The administrative task is to carry out the meaning of the written instructions and not others assume the personal responsibility.Through the comparison of the early administrative pattern, we can better understand the main advantages and Webber system differences. Webber system and it is the most important mode of various before the difference: the rule-based impersonal system replaced the personification of administrative management system. An organization and its rules than any of the people are important organization. Bureaucracy is itsoperation and how to respond to customer must is personified. As Weber has demonstrated that the modern office management ", will be incorporated into various regulations deeply touched it. The modern public administration by law theory, to command certain affairs authority has been awarded the legitimate public authority. This does not grant an institution specific cases through some instructions. It only matters is abstractly control some issues. In contrast, through personal privileges and give concession regulation of all affairs. The latter is completely dominated by the hereditary system, at least these affairs is not the traditional infringement is this situation."It is very important. Early administration based on personal relationships, be loyal to relatives, protect, leaders or political, rather than on the system. Sometimes, the early administration is politically sensitive, because of the administrative organs of the staff is appointed, they also politicians arms or mainstream class. However, it is often autocratic, autocratic administration may be unfair, especially for those who can't or unwilling to input personal and political game. One of the basic principles for with weber impersonal system to completely eliminate autocratic - at least in ideal condition is so. File exists, the reference principle of parallel and legal basis in the same environment means will always make the same decision. Below this kind of circumstance is not only more efficient, and the citizen and bureaucratic hierarchy know myself.Other differences were associated with this. In various regulations and impersonal basis, will naturally formed strict hierarchy. Personal rating system and its provisions in the left unchanged. Although Webber emphasizes the entire system, but he also noticed the bureaucracy of the organization and individual term.The traditional administrative mode won great success, it is widely adopted by governments around the world. Theoretically or in practice, it shows the advantage. And before the corruption flourished, it is more efficient than system, and the thought of individual professionalization civil servants and amateur service has a great progress. However, this model is also exposed the problems that shows that the model can even said outdated, also can say is outdated.The theory of public administration has been difficult to describe the pillar. Political control theory has problems. Administrative means follow instructions, so people demand a well-ordered transceiver method. Instruction between implementers and has a clear division. But this is not the reality, and with the public service domain expands the scale and more impossible. The traditional mode of another theoretical pillar - bureaucracy theory is no longer considered particularly effective form of organization. Formal bureaucracy could have its advantages, but people think it often training to routineer and innovators, Encourage executives rather than risk aversion risk-taking, encourage them to waste instead of effective use of scarce resources. Webb was the bureaucracy is regarded as an ideal type ", "but now this ideal type is inert, cultivate the progressive, leads to low efficiency, these mediocrity and is believed to be the public sector of the special disease. It is also criticized. Actually, the word "bureaucracy in today's more likely as low efficiency of synonyms.The new public management modeIn the 1980s, the public sector is a traditional administrative pattern of new management methods of defects. This method can alleviate some of the problems of traditional pattern, also means that the public sector operation aspects has changed significantly. The new management method has many names: management of "individualism", "the new public administration", based on the market of public administration ", after the bureaucracy model "or" entrepreneurial government ". To the late 1990s, people tend to use "and the concept of new public administration". Although the new public management, but for many of the names of public management of department of actual changes happened, people still have a consensus. First, no matter what, it is called mode with traditional represents a significant change of public administration, different more attention and managers of the individual responsibility. Second, it is clear to get rid of the classical bureaucracy, thereby organization, personnel, term and conditions more flexible. Third, it stipulates the organization and personnel, and it can target according to the performance indicators measuring task completion. Also, to plan the assessment system for more than everbefore, and also can be more strictly determine whether the government plans to achieve its objectives. Fourth, the senior executives are more likely to color with political government work, rather than independent or neutral. Fifth, the more likely the inspection by the market, buyers of public service provider and distinguish "helmsman, with the rower to distinguish". Government intervention is not always refers to the government by means of bureaucracy. Sixth, appeared through privatization and market means such as inspection, contract of government function reduce trend. In some cases, it is fundamental. Once happened during the transformation from the important changes to all connected with this, the continuity of the steps are necessary.Holmes and Shand as a useful characteristics of generalization. They put the new public management paradigm, the good as management method has the following features: (1) it is a more strategic or structure of decision-making method (around the efficiency, quality and service). (2) decentralization type management environment replaced concentration level structure. The resource allocation and service delivery closer to supply, we can get more itself from the customers and related information and other interest groups. (3) can be more flexible to replace the method of public products supply directly, so as to provide cost savings of the policy. (4) concerned with the responsibility, authority as the key link of improving performance, including emphasize clear performance contract mechanism. (5) in the public sector, and between internal to create a competitive environment. (6) strengthen the strategic decision-making ability, which can quickly, flexible and low cost to manage multiple interests outside change and the response. (7) by request relevant results and comprehensive cost reports to improve transparency and responsibility. (8) general service budget and management system to support and encourage the change.The new public management and realize a result that no one in the best way. Managers in endowed with responsibility and without being told to get results. Decision is a management job duties, if not for achieving goals, managers should assume responsibility.ConclusionThe government management over the past 150 years experienced three modes. First is the personification of modern administrative mode, or when the pattern of its defects and increasingly exposed to improve efficiency, it is the second mode of traditional bureaucracy model is replaced. Similarly, when the traditional administrative mode problems, it is the third model is the new public management, from the government to alternative market. Since 1980s, the dominance of the market as the 1920s to 1960s dominant bureaucracy. In any kind of government, market and bureaucratic system are coexisting, just a form at some stage dominant, and in another stage of another kind of form, the dominant. The new public management is increasingly weakened and bureaucracy in the public administration field market dominant period.In reality, the market and bureaucracy, mutual complement each other. The new public management may not be completely replace the bureaucracy, as in 1989, the eastern Europe before bureaucracy could not instead of the market. But the new public management movement is early traditional bureaucracy, many functions can be and often by market now. In a bureaucracy system for organizational principle is weakened environment, market solutions will be launched. Of course not all market prescription can succeed, but this is not the issue. The government of new public management will be a toolbox dowsed solutions. If the scheme of the ineffective, the government will from the same source for other solutions. The theory behind the government management has already happened, we can use the term "paradigm" to describe it. In public administration academia, many of the new public management denial of critics. But their criticism of the government reform quickly. In the new public management mode, another a kind of new mode, but certainly not returned to the traditional administrative pattern.新公共管理的现状毫无疑问,世界上许多国家,无论是发达国家还是发展中国家,在20世纪80年代后期和90年代初期都开始了一场持续的公共部门管理变革运动。

TRANSMISSIONManual transmission is one of the most common transmission, referredto as MT. Its basic structure in a single sentence is a central axis, twoinput shaft, namely, the axial and axial oart, they constituted the transmission of the subject, and, of course, a reverse axis. Manual transmission gear transmission and manual, contain can in axial sliding gears, through different meshing gears to change gear of torsional purpose.The typical structure and principle of the manual transmission.Input shaft also says, it's in front of the spline shaft directly withclutch platen, thus the spline set by the engine relay of torque. The firstshaft gear meshing gears, often with oart as input shaft, and the gear on oart will turn. Also called shaft, because even more solid shaft of gear. The output shaft, and the second shaft position have the drive shaftgear, may at any time and under the influence of the control devices and the corresponding oart gear, thus changing the speed and torque itself. The output shaft is associated with tail spline shaft torque transmissionshaft, through to drive to gear reducer.Predictably, transmission gear drive forward path is: input shaftgear - oart gnaws gnaws gear - because the second shaft gear - corresponding corresponding gear. Pour on the axle gear can also controldevice, by moving axis in the strike, and the output shaft gear and oart gear, in the opposite direction.Most cars have five forward and reverse gear, each one has certain ratio,the majority of gear transmission more than 1, 4 gears transmission is 1, called directly, and ratio is less than 1 of article 5 gear shift accelerated called. The output axis gear in the mesh position, can acceptpower transmission.Due to the gearbox output shaft to input shaft and the speed of theirgear rotating, transform an "synchronization problem". Two rotating speeddifferent meshing gears forcibly inevitable impact and collision damage gear. Therefore, the old transmission shift to use "two feet clutch" method, ShengDang in neutral position shift to stay for a while, in the space location on the door, in order to reduce gear speed. But this operation is more complex, difficult to grasp accurately. Thereforedesigners to create "synchronizer", through the synchronizer will makethe meshing gears reach speed and smooth.Currently the synchronous transmission adopts is inertial synchronizer, it mainly consists of joints, synchronizer lock ring etc,it is characteristic of the friction effect on achieving synchronization.Mating, synchronizer and mating locking ring gear tooth circle have chamfering (locking horns), the synchronizer lock ring inside surface ofgear engagement ring and the friction surface contact. The lock horns with cone when designing the proper choice, has been made to the surface friction of meshing gears with gear synchronous, also can rapid producesa locking function, prevent the synchronous before meshing gears. When synchronous lock ring of gear engagement with surface contact surface, the outer circle in friction torque under the action of gear speed rapiddecrease (increase) or to synchronous speed equal, both locking ring spunconcurrent, relative to lock ring gear synchronous speed is zero, thus inertia moment also disappear, then in force, driven by the junction of unimpeded with synchronous lock ring gear engagement, and further to engagement with the engagement ring gear tooth and complete shift process.functional (1) change ratio, meet different driving conditions for tractionengine, the need to work in the favorable conditions and meet the speed may request. In a wide range of vehicle speed changing the size and automobile driving wheel on the size of the torque. Due to the differentdemands, automobile driving conditions of vehicle speed and torque can drive in a broad range of change. For example, in high speed can be reachedon 100km/h, while in the urban district, speed in 50km/h. In the empty flat roads, road, very little resistanceWhen When carrying carrying carrying uphill, uphill, uphill, driving driving driving resistance resistance resistance was was was great. great. great. And And And the thecharacteristics of automobile engine speed range is lesser, and torque changes more cannot meet the actual conditions range. (2) drive backward, to satisfy the need to drive car backwards. Realizing the backing, engine crankshaft are generally only to a direction,and sometimes need to back, so, often used in the transmission of reverseto realize the car drive backward.(3) in power, interruption, idle running engine starting, auto shift or need to stop the dynamic output, interrupted to transfer the power ofthe drive wheels.(4), when the clutch engagement realize gap, gearbox can not power output. For example, can ensure drivers in engine flameout loosen the clutch when leaving drivers seat.constituteBy continuously variable transmission gearbox and speed control twoparts. The main function of the variable transmission torque and speed is the change of numerical and direction, The main function of theoperation is controlled transmission mechanism, realize thetransformation of transmission ratio, shift to speed torque. Principle,Mechanical transmission main application of the principle of geartransmission velocity. Say simply, there are a number of differenttransmission gearbox group of gear pair of vehicle, and behavior, is alsoshifting gears trunk by manipulating institutions make different gearpair work. As in low-speed, ratio of gear pair work, and in high-speed, let ratio of small gear pair work.Classification,1, according to the change of transmission, transmission way, there can be divided into grade level and synthetical three.(a) : several levels of transmission ratio, can choose the fixed by gear. And can be divided into: gear axis of ordinary gear transmission and fixed gear planetary gear (part) of planetary gear transmission axisof rotation.b) stepless type transmission: ratio can be continuous variation within a certain range, commonly, mechanical and electric hydraulic typeetc.(c) comprehensive type transmission by a class type, transmission andstepless type transmission, the ratio of the maximum and minimum values can be in between the scope for several section stepless change.2, press control can be divided into compulsory manipulation, transmission, automatic control and semi-automatic control 3 kinds.(a) mandatory manipulation of transmission by direct manipulation, change gear shift lever drivers.(b) automatic control type transmission ratio of choice and change: the shift is automatic. Drivers simply manipulate accelerated pedal, transmission can according to the engine speed and load control signal signal actuator, realize the transformation of gear.(c) semi-automatic control type transmission can be divided into twokinds: one kind is part of gear, automatic shift gears, manual (mandatory)shift, Another kind is selected by button in mining under gear clutch pedalor accelerated release pedal, the executing agency to shift. Transmission of maintenance1 transmission gears maintenanceTransmission gears are always changing speed, load, gear toothsurface by bluntThe impact of load, which struck gear tooth surface (especially) damage. Common injuries are:(1) gear transmission is worn gear under normal working conditions, shows the wear uniform angled tooth gear, long wear along the directionTooth thickness shouldof the tooth should not exceed 30 percent longer,not exceed usd, Gear tooth surface area of not less than two-thirds, Running gear mesh clearance shall be commonly used, 0.15-0.26 mm to 0.8 mm limit, Gear engagement between 0.10-0.15 mm, should use limit for 0.60mm. Available batches or soft metal rivalries. If more than clearance method for measuring the pairs, should be replaced.due to fail togear clearance is mainly(2) gear teeth,broken toothmeet the requirements, gear meshing parts or work under great impact load.If you are not greater than 2mm edge of gear oil can smile ShiXiuafter-grinding continue to use, If the scope or have more than three pairs,should smile.(3) often mesh surface of the helical gear often wear face due. 10-0.30mm, in order to ensure that the axial clearance, if tooth gear good operation within the wear, can repair tank, but the amount of grinding grinding should not exceed. 50.(4) often meshing gears shaft neck, needle roller bearing and wear into seat hole hole meshing gears seat with needle bearings and shaft neckwith clearance should be 0.01 - three 0.08 mm, otherwise must be changed.2 the overhaul. Transmission shellGearbox shell is transmissions, to ensure the basis of each part of the transmission is correct position, work under load. Common injuries are:(1) the abrasion of shell bearing hole hole wear will destroy its bearing assembly relation with the bearing, the direct impact of input, output shaft transmission position relative to the hole. Bearing seat with0-0.03 mm clearance shall be used for the maximum limit, should be replacedor 0.10 mm) shell or pile hole repair.(2) shell threaded holes repair note oil ROM plug hole, dumping screwhole threads connecting bolts damage and between shellThreaded hole, can take damage with screw repair.3 transmission shaft of maintenanceTransmission in the process of operation, each bearing the torsionalmoment of change, and bending moment, JianChi part is under pressure, impact and sliding friction etc. Various axial load of common injuries are:(1) the shaft neck and neck too worn wear axis gear axis will not onlyoffset, and can bring the change gear clearance, when making noisetransmission shaft neck. Also make coordination relationship with bearingdamage, may cause ablation. So roller bearings in a place with no more than 0.02 axis wear mm needle bearing shaft neck wear with place, otherwisethan 0.07 mm landscape change or chrome.side of thein stress and more seriouswear JianChi wear(2) JianChispline. JianChi with check, when more than 0.25 or and wear with more thanusd keyway apprentice, gear engagement mm, combining with the gear with JianChi weeks, according to the mm apprentice woodruff key and shaft neckkeyways apprentice to JianChi 0.08 mm over there when the keyway weeks, or should be repaired or replaced shaft.(3) transmission shaft bending thimble resist transmission shaft withmaintenance on both ends of the roof, using pinhole batches of shaft radial micrometers, check the deviation should be less than 0.10 mm) pressure correction repair.4 synchronizer overhaulA. lock ring type inertial synchronizer ring maintenance: lock hornscone a about six degrees - 7 degrees, in use, cone Angle deformation ofrapid synchronous, and not be change in time. B. B. locking locking locking pin pin pin type type type inertial inertial inertial synchronizer: synchronizer: synchronizer: locking locking locking pin pin pin type type synchronizer major damage for cone rim wear, when, cone-disk cone rim on the thread of groove depth 0.40 mm wear to 010mm deep, should be replaced.If the cone rim are scratching, face to face, but two turning machining, must not be more than 1mm should be replaced.变速器手动变速器是最常见的变速器，简称MT MT。

中英文资料外文翻译文献A Simple Prediction Formula of Roll Damping of Conventional Cargo Ships on the Basis of lkeda's Method and Its LimitationSince the roll damping of ships has significant effects of viscosity, it is difficult to calculate it theoretically. Therefore, experimental results or some prediction methods are used to get the roll damping in design stage of ships. Among some prediction methods, Ikeda’s one is widely used in many ship motion computer programs. Using the method, the roll damping of various ship hulls with various bilge keels can be calculated to investigate its characteristics. To calculate the roil damping of each ship, detailed data of the ship are needed to input. Therefore, a simpler prediction method is expected in primary design stage. Such a simple method must be useful to validate the results obtained by a computer code to predict it on the basis of Ikeda，s method, too. On the basis of the predicted roll damping by Ikeda’s method for various ships, a very simple prediction formula of the roll damping of ships is deduced in the present paper. Ship hull forms are systematically changed by changing length, beam, draft, mid-ship sectional coefficient and prismatic coefficient. It is found, however, that this simple formula can not be used for ships that have high position of the center of gravity. A modified method to improve accuracy for such ships is proposed.Key words: Roll damping, simple prediction formula, wave component, eddy component, bilge keel component.IntroductionIn 1970s, strip methods for predicting ship motions in 5-degree of freedoms in waves have been established. The methods are based on potential flow theories (Ursell-Tasai method, source distribution method and so on), and can predict pitch, heave, sway and yaw motions of ships in waves in fairly good accuracy. In roll motion, however, the strip methods do not work well because of significant viscous effects on the roll damping. Therefore, some empirical formulas or experimental dataare used to predict the roll damping in the strip methods.To improve the prediction of roll motions by these strip methods, one of the authors carried out a research project to develop a roll damping prediction method which has the same concept and the same order of accuracy as the strip methods which are based on hydrodynamic forces acting on strips. The review of the prediction method was made by Himeno [5] and Ikeda [6，7] with the computer program.The prediction method, which is now called Ikeda’s method, divides the roll damping into the frictional (BF), the wave (Bw)，the eddy (Be) and the bilge keel (Bbk) components at zero forward speed, and at forward speed, the lift (Bi) is added. Increases of wave and friction components due to advance speed are also corrected on the basis of experimental results. Then the roll damping coefficient B44 (= roll damping moment (kgfm)/roll angular velocity (rad/sec)) can be expressed as follows: B44 B bk (1)At zero forward speed, each component except the friction and lift components are predicted for each cross section with unit length and the predicted values are summed up along the ship length. The friction component is predicted by Kato’s formula for a three-dimensional ship shape. Modification functions for predicting the forward speed effects on the roll damping components are developed for the friction, wave and eddy components. The computer program of the method was published, and the method has been widely used.For these 30 years, the original Ikeda’s method developed for conven tional cargo ships has been improved to apply many kinds of ships, for examples, more slender and round ships, fishing boats, barges, ships with skegs and so on. The original method is also widely used. However, sometimes, different conclusions of roll mot ions were derived even though the same Ikeda’s method was used in the calculations. Then, to check the accuracy of the computer programs of the same Ikeda’s method, a more simple prediction method with the almost same accuracy as the Ikeda’s original one h as been expected to be developed. It is said that in design stages of ships, Ikeda’s method is too complicated to use. To meet these needs, a simple roll damping prediction method was deduced by using regression analysis [8].Previous Prediction FormulaThe simple prediction formula proposed in previous paper can not be used for modem ships that have high position of center of gravity or long natural roll period such as large passenger ships with relatively flat hull shape. In order to investigate its limitation, the authors compared the result of this prediction method with original Ikeda’s one while out of its calculating limitation. Fig. 1 shows the result of the comparison with their method of roll damping. The upper one is on the condition that the center of gravity is low and the lower one on the condition that the center of gravity is high.From this figure, the roll damping estimated by this prediction formula is in good agreement with the roll damping calculated by the Ikeda’s method for low positi on of center of gravity, but the error margin grows for the high position of center of gravity. The results suggest that the previous prediction formula is necessary to be revised. Methodical Series ShipsModified prediction formula will be developed on the basis of the predicted results by Ikeda’s method using the methodical series ships. This series ships are constructed based on the Taylor Standard Series and its hull shapes are methodically changed by changing length, beam, draft, midship sectional coefficient and longitudinal prismatic coefficient. The geometries of the series ships are given by the following equations. Proposal of New Prediction Method of Roll DampingIn this chapter, the characteristics of each component of the roll damping, the frictional, the wave, the eddy and the bilge keel components at zero advanced speed, are discussed, and a simple prediction formula of each component is developed.As well known, the wave component of the roll damping for a two-dimensional cross section can be calculated by potential flow theories in fairly good accuracy. In Ikeda's method, the wave damping of a strip section is not calculated and the calculated values by any potential flow theories are used as the wave damping.reason why viscous effects are significant in only roll damping can be explained as follows. Fig. 4 shows the wave component of the roll damping for 2-D sections calculated by a potential flow theory.ConclusionsA simple prediction method of the roll damping of ships is developed on the basis of the Ikeda’s original prediction method which was developed in the same concept as a strip method for calculating ship motions in waves. Using the data of a ship, B/d, Cb，Cm, OG/d, G)，bBK/B, Ibk/Lpp，(pa, the roll damping of a ship can be approx imately predicted. Moreover, the limit of application of Ikeda’s prediction method to modern ships that have buttock flow stern is demonstrated by the model experiment. The computer program of the method can be downloaded from the Home Page of Ikeda’s Labo (AcknowledgmentsThis work was supported by the Grant-in Aid for Scientific Research of the Japan Society for Promotion of Science (No. 18360415).The authors wish to express sincere appreciation to Prof. N. Umeda of Osaka University for valuable suggestions to this study.References五、Y. Ikeda, Y. Himeno, N. Tanaka, On roll damping force of shipEffects of friction of hull and normal force of bilge keels, Journal of the Kansai Society of Naval Architects 161 (1976) 41-49. (in Japanese)六、Y. Ikeda, K. Komatsu, Y. Himeno, N. Tanaka, On roll damping force of ship~Effects of hull surface pressure created by bilge keels, Journal of the Kansai Society of Naval Architects 165 (1977) 31-40. (in Japanese)七、Y. Ikeda, Y. Himeno, N. Tanaka, On eddy making component of roll damping force on naked hull, Journal of the Society of Naval Architects 142 (1977) 59-69. (in Japanese)八、Y. Ikeda, Y. Himeno, N. Tanaka, Components of roll damping of ship at forward speed, Journal of the Society of Naval Architects 143 (1978) 121-133. (in Japanese) 九、Y. Himeno, Prediction of Ship Roll Damping一State of the Art, Report of Department of Naval Architecture & Marine Engineering, University of Michigan, No.239, 1981.十、Y. Ikeda, Prediction Method of Roll Damping, Report of Department of Naval Architecture, University of Osaka Prefecture, 1982.十一、Y. Ikeda, Roll damping, in: Proceedings of 1stSymposium of Marine Dynamics Research Group, Japan, 1984, pp. 241-250. (in Japanese)十二、Y. Kawahara, Characteristics of roll damping of various ship types and as imple prediction formula of roll damping on the basis of Ikeda’s method, in: Proceedings of the 4th Asia-Pacific Workshop on Marine Hydrodymics, Taipei, China, 2008，pp. 79-86.十三、Y. Ikeda, T. Fujiwara, Y. Himeno, N. Tanaka, Velocity field around ship hull in roll motion, Journal of the Kansai Society of Naval Architects 171 (1978) 33-45. (in Japanese)十四、N. Tanaka, Y. Himeno, Y. Ikeda, K. Isomura,Experimental study on bilge keel effect for shallow draftship, Journal of the Kansai Society of Naval Architects 180 (1981) 69-75. (in Japanese)常规货船的横摇阻尼在池田方法基础上的一个简单预测方法及其局限性摘要：由于船的横摇阻尼对其粘度有显着的影响，所以很难在理论上计算。

市场营销专业毕业论文中英文资料外文翻译文献毕业论文中英文资料外文翻译文献文献翻译原文Marketing theoryMcCarthy (E.J.Mccarthy) ,in 1960, also under the micro-marketingdefinition: Marketing is the responsibility of business activities, products and services will be directly from the producer towards the consumer or userin order to meet customer needs and the achievement of the company profits,but also a process of socio-economic activities with the aim to meet thesocial or human needs, to achieve social goals. this definition than in the United States, although the definition of marketing association a step forward that meet customer needs and realize the company's operating profit as a goal, but two definitions that marketing activities are production activities in the beginning of the end of the middle after a series of business sales activities, when the commodity to the user the hands of the end, the enterprise marketing activities and therefore is limited to the narrow scope of circulation, rather than operating as a business for sale throughout the entire process, including marketing research, product development, pricing, distribution, advertising, publicity reports, sales promotion, marketing staff, after-sales service andso on.Christian Grnroosto the definition and emphasized the purpose of marketing: Marketing is in the interests of a whole, through mutual exchange and commitment to establish, maintain, consolidate and consumers and other participants in the relationship between the parties to achieve the purpose. This definition has been in use ever since, until the summer of 2021 was revised. The new definition is nearly 20 years on the marketing of the first amendment to the definition, no wonder the majority of marketers attracteduniversal attention. The development of marketing theory has the following four stages:The first stage: start-up phase. Marketing in the late 19th century to 20 in the United States the world's creation of 20, due to industrial development and marketing at this time by a very narrow scope of the study, but research and commercial advertising network settings. Island in Illinois and other related courses at the universities. By the \of American Advertising\to\Advertising and Marketing Association of Science Teachers\to marketing research to ensure the organization. At this time of marketing research is characterized by: a. focus on marketing and advertising techniques, modern marketing theory, concepts, principles had yet to emerge; b. University research activities are basically confined to the classroom and a professor of the study, and also society and the business community did not receive attention.Phase II: Application stage. During the 20th century to the end of World War II 20 for the application stage, begun to take shape at this time, the United States began large-scale domestic enterprises to use marketing to operate businesses, open overseas markets, European countries have to follow. Established in 1931, \Marketing Association\Marketing preach, and in 1937 merged the two organizations, academia and the business community to absorb a wide range to join the Marketing from the University of the rostrum to the community. This stage of the development of marketing in the applications. The capitalist world in 1929 due to the outbreak of an unprecedented economic crisis, the economy of the Great Depression, large shrinkage in the purchasing power of a sharp decline in the community, the unprecedented sharp market. The whole capitalist economic crisis dealt a serious blow. This stage, marketing research is characterized by: a. there is no product to sell out of this narrow concept of; b. at a deeper study on the basis of a broader marketing and advertising technique; c. study in favor of selling the business organization set; d. beginning of the study of marketing theory to society, paying attention to the general business community.The third phase: the formation period of development. The 20th century, the 50's to 80's for the marketing stage of development, the U.S. military-industrial economy has begun to shift the public economic, social goods, the sharp increase in social productivity improved significantly, while the corresponding consumption level of residents has not been much improvement, market began to emerge in a state of oversupply. At this point the U.S. marketing expert R. Cox and W. Aderson the \sense of Marketing is to promote the potential producers and consumers of goods or services of any transaction activity.\the new marketing stage. Previously that the market is the end ofthe production process, is now considered to be the starting point of the production process; the original that is marketing to sell products, now that marketing through the investigation to understand the needs and desires of consumers, and production in line with consumer needs and desires goods or services, which meet the needs and desires of consumers; so that from the marketing companies to enter the framework of social vision and a clear management guidance.Phase IV: the mature stage. Since the 80's for the marketing of the mature stage, in: a. associated with other disciplines such as economics, mathematics, statistics, psychology, etc.; b. theory began to form their own system; 80 is the age of marketing revolutionary period, begun to enter the field of modern marketing, so marketing the new look.译文市场营销理论麦卡锡(E.J.Mccarthy)于1960年对微观市场营销下了定义：市场营销是企业经营活动的职责，它将产品及劳务从生产者直接引向消费者或使用者以便满足顾客需求及实现公司利润，同时也是一种社会经济活动过程，其目的在于满足社会或人类需要，实现社会目标。

20外⽂⽂献翻译原⽂及译⽂参考样式华北电⼒⼤学科技学院毕业设计（论⽂）附件外⽂⽂献翻译学号： 0819******** 姓名：宗鹏程所在系别：机械⼯程及⾃动化专业班级：机械08K1指导教师：张超原⽂标题：Development of a High-PerformanceMagnetic Gear年⽉⽇⾼性能磁齿轮的发展1摘要：本⽂提出了⼀个⾼性能永磁齿轮的计算和测量结果。

上述分析的永磁齿轮有5.5的传动⽐，并能够提供27 Nm的⼒矩。

分析表明，由于它的弹簧扭转常数很⼩，因此需要特别重视安装了这种⾼性能永磁齿轮的系统。

上述分析的齿轮也已经被应⽤在实际中，以验证、预测其效率。

经测量，由于较⼤端齿轮传动引起的磁⼒齿轮的扭矩只有16 Nm。

⼀项关于磁齿轮效率损失的系统研究也展⽰了为什么实际⼯作效率只有81％。

⼀⼤部分磁损耗起源于轴承，因为机械故障的存在，此轴承的备⽤轴承在此时是必要的。

如果没有源于轴的少量磁泄漏，我们估计能得到⾼达96％的效率。

与传统的机械齿轮的⽐较表明，磁性齿轮具有更好的效率和单位体积较⼤扭矩。

最后，可以得出结论，本⽂的研究结果可能有助于促进传统机械齿轮向磁性齿轮发展。

关键词：有限元分析（FEA）、变速箱，⾼转矩密度，磁性齿轮。

⼀、导⾔由于永久磁铁能产⽣磁通和磁⼒，虽然⼏个世纪过去了，许多⼈仍然着迷于永久磁铁。

，在过去20年的复兴阶段，正是这些优点已经使得永久磁铁在很多实际中⼴泛的应⽤，包括在起重机，扬声器，接头领域，尤其是在永久磁铁电机⽅⾯。

其中对永磁铁的复兴最常见于效率和转矩密度由于永磁铁的应⽤显著提⾼的⼩型机器的领域。

在永久磁铁没有获取⾼度重视的⼀个领域是传动装置的领域，也就是说，磁⼒联轴器不被⼴泛⽤于传动装置。

磁性联轴器基本上可以被视为以传动⽐为1：1磁⼒齿轮。

相⽐标准电⽓机器有约10kN m/m的扭矩，装有⾼能量永久磁铁的磁耦有⾮常⾼的单位体积密度的扭矩，变化范围⼤约300–400 kN 。

附件C：译文 构建智能城市应用生态系统

城市正变得越来越智能化，但是需要一个能够处理和管理低水平复杂事物的处理单元。在这篇文章中，作者讨论了构建智能应用生态系统(SCALE)处理块以及相关的挑战。 最近智能城市模式的出现和成功导致其广泛应用在城市中及其它所支持的全球生态系统。领导牵头的国际计划，比如IBM智慧地球计划(www.ibm.com/smarterplanet)，麻省理工学院(MIT)智能城市群(http://cities.media.mit.edu),三一学院的智能和可持续研究(www.tcd.ie/research/themes/smartsustainable-cities),以及维也纳的公会Urbanes Energie undMobilitätssystem(URBEM;http://urbem.tuwien.ac.at),越来越多的城市的核心正变得越来越智能。各种领域比如公共设施，工业和政府(当然包括城市建筑)的智能城市产生大量的数据，产生复杂的相互作用，并导致复杂性不断增加。 在智能城市领域，管理者不仅需要管理数十亿的传感器和新兴领域的物联网设备(物联网)，而且还要能够基于在复杂系统下的大量数据做出明智的决定。这导致许多的挑战，从管理和支配数十亿计的设备、流程和数据生成管理的能力以及有效的提供资源分析，到隐私和安全的诸多问题。为了管理这个复杂且不断变化的系统，这里我们介绍循环智能城市的概念，使管理者和使用者一起来管理这个新兴的复杂系统。图1显示这个理想的循环智能系统—一个在概念层面上解决了上述挑战的反应系统。 为了启用这个抽象的概念且真正的从众受益，我们需要创建能够处理和管理所有地级复杂性的基础底层。这应该像是一个现代计算机操作系统，通过提供相同的抽象底层资源和管理任务，但是需要更大的规模和额外的抽象资源。因此，在这里，我们介绍一个智能城市操作系统的特定基础(SOS)，能够应用更大的智能城市应用生态系统(SCALE)。这种智能城市应用生态系统让持股人和城市居民创建智能城市的应用领域，关注他们想要知道什么，解除他们在这种领域的技术中所面临的麻烦和障碍。 方法

本科毕业生外文文献翻译学生姓名：指导教师：所在学院：专业：中国·大庆2013 年5 月Chapter 1IntroductionSpread-spectrum techniques are methods by which a signal (e.g. an electrical, electromagnetic, or acoustic signal ) generated in a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference and jamming, to prevent detection, and to limit power flux density (e.g. in satellite downlinks).1.1 History Frequency hoppingThe concept of frequency hopping was first alluded to in the 1903 U.S. Patent 723,188 and U.S. Patent 725,605 filed by Nikola Tesla in July 1900. Tesla came up with the idea after demonstrating the world's first radio-controlled submersible boat in 1898, when it became apparent the wireless signals controlling the boat needed to be secure from "being disturbed, intercepted, or interfered with in any way." His patents covered two fundamentally different techniques for achieving immunity to interference, both of which functioned by altering the carrier frequency or other exclusive characteristic. The first had a transmitter that worked simultaneously at two or more separate frequencies and a receiver in which each of the individual transmitted frequencies had to be tuned in, in order for the control circuitry to respond. The second technique used a variable-frequency transmitter controlled by an encoding wheel that altered the transmitted frequency in a predetermined manner. These patents describe the basic principles of frequency hopping and frequency-division multiplexing, and also the electronic AND-gate logic circuit.Frequency hopping is also mentioned in radio pioneer Johannes Zenneck's book Wireless Telegraphy (German, 1908, English translation McGraw Hill, 1915), although Zenneck himself states that Telefunken had already tried it several years earlier. Zenneck's book was a leading text of the time, and it is likely that many later engineers were aware of it. A Polish engineer, Leonard Danilewicz, came up with the idea in 1929.Several other patents were taken out in the 1930s, including one by Willem Broertjes (Germany 1929, U.S. Patent 1,869,695, 1932). During World War II, the US Army Signal Corps was inventing a communication system called SIGSALY for communication between Roosevelt and Churchill, which incorporated spread spectrum, but due to its top secret nature, SIGSALY's existence did not become known until the 1980s.The most celebrated invention of frequency hopping was that of actress Hedy Lamarr and composer George Antheil, who in 1942 received U.S. Patent 2,292,387 for their "Secret Communications System". Lamarr had learned about the problem at defense meetings she had attended with her former husband Friedrich Mandl, who was an Austrian arms manufacturer. The Antheil-Lamarr version of frequency hopping used a piano-roll to change among 88 frequencies, and was intended to make radio-guided torpedoes harder for enemies to detect or to jam. The patent came to light during patent searches in the 1950s when ITT Corporation and other privatefirms began to develop Code Division Multiple Access (CDMA), a civilian form of spread spectrum, though the Lamarr patent had no direct impact on subsequent technology. It was in fact ongoing military research at MIT Lincoln Laboratory, Magnavox Government & Industrial Electronics Corporation, ITT and Sylvania Electronic Systems that led to early spread-spectrum technology in the 1950s. Parallel research on radar systems and a technologically similar concept called "phase coding" also had an impact on spread-spectrum development.1.2 Commercial useThe 1976 publication of Spread Spectrum Systems by Robert Dixon, ISBN 0-471-21629-1, was a significant milestone in the commercialization of this technology. Previous publications were either classified military reports or academic papers on narrow subtopics. Dixon's book was the first comprehensive unclassified review of the technology and set the stage for increasing research into commercial applications.Initial commercial use of spread spectrum began in the 1980s in the US with three systems: Equatorial Communications System's very small aperture (VSAT) satellite terminal system for newspaper newswire services, Del Norte Technology's radio navigation system for navigation of aircraft for crop dusting and similar applications, and Qualcomm's OmniTRACS system for communications to trucks. In the Qualcomm and Equatorial systems, spread spectrum enabled small antennas that viewed more than one satellite to be used since the processing gain of spread spectrum eliminated interference. The Del Norte system used the high bandwidth of spread spectrum to improve location accuracy.In 1981, the Federal Communications Commission started exploring ways to permit more general civil uses of spread spectrum in a Notice of Inquiry docket. This docket was proposed to FCC and then directed by Michael Marcus of the FCC staff. The proposals in the docket were generally opposed by spectrum users and radio equipment manufacturers, although they were supported by the then Hewlett-Packard Corp. The laboratory group supporting the proposal would later become part of Agilent.The May 1985 decision in this docket permitted unlicensed use of spread spectrum in 3 bands at powers up to 1 Watt. FCC said at the time that it would welcome additional requests for spread spectrum in other bands.The resulting rules, now codified as 47 CFR 15.247 permitted Wi-Fi, Bluetooth, and many other products including cordless telephones. These rules were then copied in many other countries. Qualcomm was incorporated within 2 months after the decision to commercialize CDMA.1.3 Spread-spectrum telecommunicationsThis is a technique in which a (telecommunication) signal is transmitted on a bandwidth considerably larger than the frequency content of the original information.Spread-spectrum telecommunications is a signal structuring technique that employs direct sequence, frequency hopping, or a hybrid of these, which can be used for multiple access and/or multiple functions. This technique decreases the potential interference to other receivers while achieving privacy. Spread spectrum generally makes use of a sequential noise-like signalstructure to spread the normally narrowband information signal over a relatively wideband (radio) band of frequencies. The receiver correlates the received signals to retrieve the original information signal. Originally there were two motivations: either to resist enemy efforts to jam the communications (anti-jam, or AJ), or to hide the fact that communication was even taking place, sometimes called low probability of intercept (LPI).Frequency-hopping spread spectrum (FHSS), direct-sequence spread spectrum (DSSS), time-hopping spread spectrum (THSS), chirp spread spectrum (CSS), and combinations of these techniques are forms of spread spectrum. Each of these techniques employs pseudorandom number sequences —created using pseudorandom number generators —to determine and control the spreading pattern of the signal across the alloted bandwidth. Ultra-wideband (UWB) is another modulation technique that accomplishes the same purpose, based on transmitting short duration pulses. Wireless Ethernet standard IEEE 802.11 uses either FHSS or DSSS in its radio interface.Chapter 22.1 Spread-spectrum clock signal generationSpread-spectrum clock generation (SSCG) is used in some synchronous digital systems, especially those containing microprocessors, to reduce the spectral density of the electromagnetic interference (EMI) that these systems generate. A synchronous digital system is one that is driven by a clock signal and because of its periodic nature, has an unavoidably narrow frequency spectrum. In fact, a perfect clock signal would have all its energy concentrated at a single frequency and its harmonics, and would therefore radiate energy with an infinite spectral density. Practical synchronous digital systems radiate electromagnetic energy on a number of narrow bands spread on the clock frequency and its harmonics, resulting in a frequency spectrum that, at certain frequencies, can exceed the regulatory limits for electromagnetic interference (e.g. those of the FCC in the United States, JEITA in Japan and the IEC in Europe).To avoid this problem, which is of great commercial importance to manufacturers, spread-spectrum clocking is used. This consists of using one of the methods described in the Spread-spectrum telecommunications section in order to reduce the peak radiated energy. The technique therefore reshapes the system's electromagnetic emissions to comply with the electromagnetic compatibility (EMC) regulations. It is a popular technique because it can be used to gain regulatory approval with only a simple modification to the equipment.Spread-spectrum clocking has become more popular in portable electronics devices because of faster clock speeds and the increasing integration of high-resolution LCD displays in smaller and smaller devices. Because these devices are designed to be lightweight and inexpensive, passive EMI reduction measures such as capacitors or metal shielding are not a viable option. Active EMI reduction techniques such as spread-spectrum clocking are necessary in these cases, but can also create challenges for designers. Principal among these is the risk that modifying th e system clock runs the risk of the clock/data misalignment.2.2Direct-sequence spread spectrumIn telecommunications, direct-sequence spread spectrum (DSSS) is a modulation technique. As with other spread spectrum technologies, the transmitted signal takes up more bandwidth than the information signal that is being modulated. The name 'spread spectrum' comes from the fact that the carrier signals occur over the full bandwidth (spectrum) of a device's transmitting frequency.2.2.1Features1.It phase-modulates a sine wave pseudorandomly with a continuous string ofpseudonoise (PN) code symbols called "chips", each of which has a much shorter duration than an information bit. That is, each information bit is modulated by a sequence of much faster chips. Therefore, the chip rate is much higher than the information signal bit rate.2. It uses a signal structure in which the sequence of chips produced by the transmitter isknown a priori by the receiver. The receiver can then use the same PN sequence to counteract the effect of the PN sequence on the received signal in order to reconstruct the informationsignal.2.2.2Transmission methodDirect-sequence spread-spectrum transmissions multiply the data being transmitted by a "noise" signal. This noise signal is a pseudorandom sequence of 1 and −1 values, at a frequency much higher than that of the original signal, thereby spreading the energy of the original signal into a much wider band.The resulting signal resembles white noise, like an audio recording of "static". However, this noise-like signal can be used to exactly reconstruct the original data at the receiving end, by multiplying it by the same pseudorandom sequence (because 1 × 1 = 1, and −1 × −1 = 1). This process, known as "de-spreading", mathematically constitutes a correlation of the transmitted PN sequence with the PN sequence that the receiver believes the transmitter is using.For de-spreading to work correctly, the transmit and receive sequences must be synchronized. This requires the receiver to synchronize its sequence with the transmitter's sequence via some sort of timing search process. However, this apparent drawback can be a significant benefit: if the sequences of multiple transmitters are synchronized with each other, the relative synchronizations the receiver must make between them can be used to determine relative timing, which, in turn, can be used to calculate the receiver's position if the transmitters' positions are known. This is the basis for many satellite navigation systems.The resulting effect of enhancing signal to noise ratio on the channel is called process gain. This effect can be made larger by employing a longer PN sequence and more chips per bit, but physical devices used to generate the PN sequence impose practical limits on attainable processing gain.If an undesired transmitter transmits on the same channel but with a different PN sequence (or no sequence at all), the de-spreading process results in no processing gain for that signal. This effect is the basis for the code division multiple access (CDMA) property of DSSS, which allows multiple transmitters to share the same channel within the limits of the cross-correlation properties of their PN sequences.As this description suggests, a plot of the transmitted waveform has a roughly bell-shaped envelope centered on the carrier frequency, just like a normal AM transmission, except that the added noise causes the distribution to be much wider than that of an AM transmission.In contrast, frequency-hopping spread spectrum pseudo-randomly re-tunes the carrier, instead of adding pseudo-random noise to the data, which results in a uniform frequency distribution whose width is determined by the output range of the pseudo-random number generator.2.2.3Benefits∙Resistance to intended or unintended jamming∙Sharing of a single channel among multiple users∙Reduced signal/background-noise level hampers interception (stealth)∙Determination of relative timing between transmitter and receiver2.2.4Uses∙The United States GPS and European Galileo satellite navigation systems∙DS-CDMA (Direct-Sequence Code Division Multiple Access) is a multiple access scheme based on DSSS, by spreading the signals from/to different users with different codes.It is the most widely used type of CDMA.∙Cordless phones operating in the 900 MHz, 2.4 GHz and 5.8 GHz bands∙IEEE 802.11b 2.4 GHz Wi-Fi, and its predecessor 802.11-1999. (Their successor 802.11g uses OFDM instead)∙Automatic meter reading∙IEEE 802.15.4 (used e.g. as PHY and MAC layer for ZigBee)2.3 Frequency-hopping spread spectrumFrequency-hopping spread spectrum (FHSS) is a method of transmitting radio signals by rapidly switching a carrier among many frequency channels, using a pseudorandom sequence known to both transmitter and receiver. It is utilized as a multiple access method in the frequency-hopping code division multiple access (FH-CDMA) scheme.A spread-spectrum transmission offers three main advantages over a fixed-frequency transmission:1.Spread-spectrum signals are highly resistant to narrowband interference. Theprocess of re-collecting a spread signal spreads out the interfering signal, causing it to recede into the background.2.Spread-spectrum signals are difficult to intercept. An FHSS signal simply appearsas an increase in the background noise to a narrowband receiver. An eavesdropper would only be able to intercept the transmission if they knew the pseudorandom sequence.3.Spread-spectrum transmissions can share a frequency band with many types ofconventional transmissions with minimal interference. The spread-spectrum signals add minimal noise to the narrow-frequency communications, and vice versa. As a result, bandwidth can be utilized more efficiently.2.3.1 Basic algorithmTypically, the initiation of an FHSS communication is as follows1.The initiating party sends a request via a predefined frequency or control channel.2.The receiving party sends a number, known as a seed.3.The initiating party uses the number as a variable in a predefined algorithm, whichcalculates the sequence of frequencies that must be used. Most often the period of the frequency change is predefined, as to allow a single base station to serve multiple connections.4.The initiating party sends a synchronization signal via the first frequency in thecalculated sequence, thus acknowledging to the receiving party it has correctly calculated the sequence.5.The communication begins, and both the receiving and the sending party changetheir frequencies along the calculated order, starting at the same point in time.2.3.2 Military useSpread-spectrum signals are highly resistant to deliberate jamming, unless the adversary has knowledge of the spreading characteristics. Military radios use cryptographic techniques to generate the channel sequence under the control of a secret Transmission Security Key(TRANSEC) that the sender and receiver share.By itself, frequency hopping provides only limited protection against eavesdropping and jamming. To get around this weakness most modern military frequency hopping radios often employ separate encryption devices such as the KY-57. U.S. military radios that use frequency hopping include HAVE QUICK and SINCGARS.2.3.3Technical considerationsThe overall bandwidth required for frequency hopping is much wider than that required to transmit the same information using only one carrier frequency. However, because transmission occurs only on a small portion of this bandwidth at any given time, the effective interference bandwidth is really the same. Whilst providing no extra protection against wideband thermal noise, the frequency-hopping approach does reduce the degradation caused by narrowband interferers.One of the challenges of frequency-hopping systems is to synchronize the transmitter and receiver. One approach is to have a guarantee that the transmitter will use all the channels in a fixed period of time. The receiver can then find the transmitter by picking a random channel and listening for valid data on that channel. The transmitter's data is identified by a special sequence of data that is unlikely to occur over the segment of data for this channel and the segment can have a checksum for integrity and further identification. The transmitter and receiver can use fixed tables of channel sequences so that once synchronized they can maintain communication by following the table. On each channel segment, the transmitter can send its current location in the table.In the US, FCC part 15 on unlicensed system in the 900MHz and 2.4GHz bands permits more power than non-spread spectrum systems. Both frequency hopping and direct sequence systems can transmit at 1 Watt. The limit is increased from 1 milliwatt to 1 watt or a thousand times increase. The Federal Communications Commission (FCC) prescribes a minimum number of channels and a maximum dwell time for each channel.In a real multipoint radio system, space allows multiple transmissions on the same frequency to be possible using multiple radios in a geographic area. This creates the possibility of system data rates that are higher than the Shannon limit for a single channel. Spread spectrum systems do not violate the Shannon limit. Spread spectrum systems rely on excess signal to noise ratios for sharing of spectrum. This property is also seen in MIMO and DSSS systems. Beam steering and directional antennas also facilitate increased system performance by providing isolation between remote radios.2.3.4 Variations of FHSSAdaptive Frequency-hopping spread spectrum (AFH) (as used in Bluetooth) improves resistance to radio frequency interference by avoiding using crowded frequencies in the hopping sequence. This sort of adaptive transmission is easier to implement with FHSS than with DSSS.The key idea behind AFH is to use only the “good” frequencies, by avoiding the "bad" frequency channels -- perhaps those "bad" frequency channels are experiencing frequency selective fading, or perhaps some third party is trying to communicate on those bands, or perhaps those bands are being actively jammed. Therefore, AFH should be complemented by a mechanism for detecting good/bad channels.However, if the radio frequency interference is itself dynamic, then the strategy of “badchannel removal”, applied in AFH might not work well. For example, if there are several colocated frequency-hopping networks (as Bluetooth Piconet), then they are mutually interfering and the strategy of AFH fails to avoid this interference.In this case, there is a need to use strategies for dynamic adaptation of the frequency hopping pattern.Such a situation can often happen in the scenarios that use unlicensed spectrum.In addition, dynamic radio frequency interference is expected to occur in the scenarios related to cognitive radio, where the networks and the devices should exhibit frequency-agile operation.Chirp modulation can be seen as a form of frequency-hopping that simply scans through the available frequencies in consecutive order.第一章介绍扩频技术是信号（例如一个电气、电磁，或声信号）生成的特定带宽频率域中特意传播，从而导致更大带宽的信号的方法。