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1.
Achieving Six-Sigma process capability starts with l istening to the Voice of the Customers, and it becomes a reality by combining th e People Power and the Process Power of the organisation. This paper presents a Six-Sigma implementation case study carried out in a magnet manufacturing compa ny, which produces bearing magnets to be used in energy meters. If the thickness of the produced bearing magnets is between 2.35 mm and 2.50 mm, they will be ac cepted by the customers. All the time the company coul...  相似文献   

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LifetimeEvaluationofMediumandSmalSizePowerTransformers—Part1:TheoryGuoYongji(郭永基),DaiYoujie(代有杰)DepartmentofElectricalEnginee...  相似文献   

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1GeneralIntroductiontoTNPS&JNPC1.1BasicInformationJiangsuTianwanNuclearPowerStation(hereinafterreferredtoas“TNPS”)isalarge scalecooperativeprojectinnuclearenergysector,followingtheAgreementbetweentheGovernmentsofRussianFederationandPeople’sRepublicof ChinaoncooperationinconstructionofNPPinChinainDecember1992.TheOwnerofthisProjectisJiangsuNuclearPowerCorporation(hereinafterreferredtoas“JNPC”),whichwasofficiallyestablishedonDecember18,1997andisresponsiblefortheconstructionof…  相似文献   

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Electrical power assisted steering (EPAS) is one of the key components, especially for electrical vehicle. It has attracted much attention for their advantages with respect to improved fuel economy and has been widely adopted as automotive power-steering equipment in recent years. EPS (electrical power steering) controllers contain MCU (microprocessor control unit) to implement the complex control algorithms. EPS control strategy development is the core technology of the whole system. To achieve the better performance of driving, both mechanical structures and electrical structures are totally designed as a whole. Model-based development is recommended to software design. There are several trends about EPS’ future, such as high power EPS development, high voltage EPS development and steering-by-wire technology.  相似文献   

6.
Tsinghua-1 Micro-Satellite Power System Architecture and Design   总被引:1,自引:0,他引:1  
IntroductionThe Space Center of Tsinghua University( Beijing,China) ,together with Surrey Satellite TechnologyLtd.( SSTL,Guildford,United Kingdom) ,designed and produced the Tsinghua- 1 Micro-satellite.SSTL has pioneered cost- effectivesatellite engineering techniques for highlysophisticated,yet inexpensive micro- satellites[1]for earth observation,data delivery[2 ] and scientificexperiments[3,4 ] .The Tsinghua- 1 Micro- satellite has a mass ofapproximately5 0 kg.Its envelope is330 m…  相似文献   

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Microbial fermentation plays an important role in digesting renewable biomass, in particular lignocellulose to generate new sources of chemical raw material and energy. The increasing number of genetic and process permutations during screening for process optimizations drives a strong demand for obtaining accurate biological and process data in short time frames and at low cost. A novel miniaturised bioreactor with a working volume of 7 mL was fabricated to meet the requirements of fermentation process development. The engineering parameters including power consumption and mixing time were characterised and compared with those in a 7 L bioreactor with two standard Rushton impellers. Computational results in the 7 L bioreactor were in good agreement with the literature and this approach was applied to this miniaturised bioreactor. Power number for the impellers used in the miniaturised reactor was found to vary with the detailed impeller geometrical characteristics, including the blade width, length and thickness. Mixing time in this miniaturised bioreactor was calculated to be around 0.2 s, shorter than the time required for metabolic regulations for some cells. This miniaturised bioreactor could dramatically change the fermentation process development.  相似文献   

8.
介绍了Power Builder和Informix-Online的特点,并重点阐述了两者之间的ODBC接口和专用接口。  相似文献   

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The secure interaction among multiple security domains is a major concern. In this paper, we highlight the issues of secure interoperability among multiple security domains operating under the widely accepted Role Based Access Control (RBAC) model. We propose a model called CRBAC that easily establishes a global policy for roles mapping among multiple security domains. Our model is based on an extension of the RBAC model. Also, multiple security domains were composed to one abstract security domain. Also roles in the multiple domains are translated to permissions of roles in the abstract security domain. These permissions keep theirs hierarchies. The roles in the abstract security domain implement roles mapping among the multiple security domains. Then, authorized users of any security domain can transparently access resources in the multiple domains.  相似文献   

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This is the 2^nd topic of "A series dissertation on Tianwan Nuclear Power Station". It focuses on the site conditions, including: meteorological conditions, geological conditions, hydrology conditions, and so on.  相似文献   

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This paper introduces a computerized on-line partial discharge (PD) monitoring and diagnostic system for transformers. The system, which is already in use in a power station, uses wide-band active transducers and a data acquisition unit with modularized and exchangeable components. The system software is a power equipment monitoring and diagnostic system, which is based on the component object model, and was developed for monitoring multiple parameters in multiple power supply systems. The statistical characteristics of PDs in power transformers were studied using 7 experimental models for simulating PDs in transformers and 3 models for simulating interfering discharges in air. The discharge features were analyzed using a 3-D pattern chart with a three-layer back-propagation artificial neural network used to recognize the patterns. The results show that PDs in air and oil can be distinguished. The model can be used for interference rejection on-line monitoring of partial discharge in transformers.  相似文献   

13.
薛晗朝 《科技信息》2009,(33):I0160-I0160
PowerPoint是中职学生制作多媒体作品的主要工具,本文凭借天水农业学校Moodle课程管理平台,以协作学习理论为基础,选择天水农业学校《信息技术》课程第二学期的Powerpoint的最后一节的教学进行设计,教学从学习者分析入手,重点对教学环境、教学目标和教学过程进行了设计。  相似文献   

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2008年1月,Boston—Power公司在北京宣布,已募集了4500美元新资金用来扩大业务、营销、科研开发以及生产运作,以满足全球市场对其新一代锂离子电池技术Sonata的强劲需求。C系列融资是由Oak Investment Partners主导,并包括现有的蓝筹投资者Venrock Associates、Granite Global Ventures及Gabriel Venture Partners。  相似文献   

15.
As earnings power is one of the primary capacities for commercial banks, by analyzing several indexes on banks‘o peration performance, this article compared the earnings power between the state banks and the stock banks in China. Through the analysis, some problems of domestic banks may be found and pointed out that the commercial bank should stress on the target of profit maximum to avoid the domancial risks. With enough earnings power,the domestic banks can take the challenge with those foreign banks entering domestic money market.  相似文献   

16.
This is the3rd topic of“A series dissertation on Tianwan Nuclear Power Station”,which focuses on the technical characteristics.The type of this Nuclear Power Station is a Russian AES-91(WWER-1000/ V428)pressurized water reactor(PWR)nuclear power unit.It is an improved concept by the Russian Saint Petersburg Nuclear Power Research and Design Institute based on the experiences in design,construction and operation of WWER-1000/V320units.Since WWER-1000/V320is a mature type which has more than260 reactor-year operation experiences,the author guesses the technical characteristics of WWER-1000/V320are well known,thus the comparison of their technical characteristics is described bellow.  相似文献   

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1The Material for the Casing of theFuel Assembly and its Structure Madeof Zirconium AlloyWith provision for stability of the materialsagainst corrosive,electrochemical,heat,mechanical and radiation effects,the followingstructure materials are usedinthe structure of fuelassembly,control and protectionsystem,burnableabsorber rod:Stainless steel of type08X18H10T,zirconium alloy Zr 1%Nb,chromium-nickelalloys XHTUP and42XHM.Steel08X18H10Tisdistinguished by stability of mechanicalcharacter…  相似文献   

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时锦程 《科技信息》2013,(24):177-178
This paper examines the definition of MPT-SBSP and implementation model of such technology.It surveys the latest development and affirms the feasibility and a bright future of this technology,emphasizing the existing issues must be solved by more educated individuals and organizations for the early realization of this"beyond-the-realm-of-cost"technology.Because once this technology is successfully applied in large-scale,humans won't have to worry about the energy crisis in the future.  相似文献   

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Taking Emerson and Thoreau's transcendentalist opinions as a main framework of the essay,this paper mainly talks about how does the power of Nature infulunce the main characters of the 19th century American novels.It also trys to find a conclusion that the one who rely on the nature could survive and the one who fight against or keep away from nature will perish.  相似文献   

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1Patternselectionandver ificationoftheTGPpen stock TheYangtzeRiverWaterResourcesCommission (CWRC)submittedASub jectReportonthePatternSelectionofthePenstockinthePowerStationoftheThreeGorgesProjectinDecember,1 993,inwhichthearrangementofthepenstockswasdefinitelystated ,twotypesofstructures (internalhydraulicpressurebornesolelybypenstockandinternalhydraulicpressurejointlybornebysteellinerandreinforcedconcrete)proposed ,acomparisonbetweenthetwooptionscomprehensivelyperformed ,andsuggesti…  相似文献   

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