Features • CSA/NRTL Approved • Used for non-intrusive configuration and calibration of SEC 2000 gas detectors• Calibrates, checks and correlates data from any SEC detector on the data highway• Bi-directional infrared communication when pointed at any SEC 2000 display board• Intrinsically safe menu driven device • Can communicate with SEC 1500, SEC 2000 and SEC DAIM devicesOperationThe SEC 2500 Hand Held Programmer transmits and receives infrared light from the front of the The infrared light is used to establish non-intrusive communication with any SEC 2000 that is equipped with a display When communicating with the SEC 2000, the SEC 2500 must be pointed directly at the display module of the SEC 2000 which can be up to 15 feet The Hand Held Programmer can communicate with any SEC 2000 gas detector on the same RS-485 network once infrared communication is Data exchange, using the infrared link, occurs at a rate of 300 The programmer has a socket at the bottom of the unit for connecting to a Data Communication Cable (P/N 147-1000C) The Data Communication Cable enables a hardwire communication connection to all SEC Once communication is established, the devices can be checked, calibrated and information can be correlated with a touch of the keypad located on the SEC 2500 Hand Held P The SEC 2500 Hand Held Programmer is certified for use in hazardous The SEC 4100 System Monitor is a multi-channel microprocessor based controller designed to monitor the gas and fire detection Each SEC 4100 System Monitor provides a digital display of each device and alarm level present at each Initiates alarms when any device senses a dangerous The SEC 4100 System Monitor has 2 sets of “Data A” and “Data B” terminals, labeled LAN X and LAN Y This allows the detectors to be connected in a compete The SEC 4100 will transfer communication between the LAN X and LAN Y highway when a communication fault is The SEC 4100 System Monitor can be used with SEC DAIM Modules to add other types of devices to the See SEC 4853 DAIM data sheet for further The SEC 4100 System Monitor can also be used in conjunction with the SEC 4850 Repeater, SEC 4851 Expansion Relay Controller, SEC 4852 High Density Display and SEC Supervision Plus software Other Products Available:Infrared Hydrocarbon Gas DetectorsExplosion Proof Gas DetectorsNon-Explosion Proof Gas Detectors4-20 mA Gas DetectorsData Logging/Graphics Software PackagesOptical UV/IR Flame DetectorsFire Suppression Aerosol GeneratorsPortable Automatic Fire Fighting SystemsHalotron SystemsTwin Agent UnitsDry Chemical Mobile and Stationary Units
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在上面找到的都是你自己可以完成的，建议还是直接找别人写一篇比较保险！我和我同学找的是脚印代写论文写的，用支付宝担保交易很有保障，并且现在论文过了，所以才推荐给你，建议去看看，百度一下就知道了
The continuous development of information system(IS)has advanced the research of the basic theory From the point of view of mathematical model, the basic theory of IS is discussed in this Firstly, the mathematical model of IS based on set theory is Then perfectibility and redundancy of information and attributes in IS are On the basis of the concepts of maximal IS, optional IS and simplest IS, perfect IS is defined, and uncertain IS is introduced considering the 信息系统的不断发展直接促进了信息系统基础理论的研究 本文从数学模型的角度出发对信息系统的基础理论进行了探讨 首先 ,文中给出了基于集合论的信息系统的数学模型 ;然后就信息系统中信息和属性的完备性和冗余程度两个方面进行了讨论 在介绍了最大的信息系统、可选的信息系统和最简信息系统的定义后 ,本文提出了理想信息系统的概念 ;并针对信息系统中信息的不确定性问题 ,引入了不确定性信息系统的概念 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝上面只是中英文摘要，如果不要全文就足够了。至于全文，你可以去Google查找。另外，这儿有几篇关于文献搜索的文章，不妨去看看：
1、到学校的图书馆，找到相关书籍，应该有前言或者介绍，如果有英汉对应的话 就如你所愿了2、从学校入口进中国学术期刊全文数据库（这样可免费），在里面搜索相关论文，论文后面肯定有英文参考文献，你就按上面提供的名称找吧~~3、把“基于单片机控制的直流恒流源的设计”翻译成英文，然后在 尽情的找吧4、求助你的指导老师，他知道你的论文嘛，肯定有这方面的资料的如果可以的话，晚上我帮你找找~~现在么资源利用~~呵
注重参考文献，就是要把文献的出处写出来。嗯。
1、我国电子商务展望及发展 [现代情报 Modern Information] 刘凤君 2、我国电子商务现状及展望 The Present Situation of China's E-commerce and Its Future Development [烟台大学学报（哲学社会科学版） Journal of Yantai University(Philosophy and Social Science Edition)] 翟凤荣 3、我国电子商务支付的现状及展望 The Actuality and Expectation of Electronic Business Payment in China [重庆广播电视大学学报 Journal of Chongqing RTV University] 刘波 4、我国电子商务发展前景展望 [合作经济与科技 CO-Oerativeconomy & Science] 张元慧 , 李少伟 , 许丽红 5、电子商务展望 现代商业 Modern Business 2001年,第11期 6、浅析我国电子商务的现状与趋势 Present Situation and Development of Electronic Commerce 蔺建霞 Lin Jianxia 7、电子商务的发展现状与展望 The Current Development and Prospects for E-Bussiness 许多顶 Xu Duoding 8、我国电子商务发展前景展望 张元慧 李少伟 许丽红 9、我国电子商务环境下CA的发展展望 Development Prospect of Electronic Commerce CA in China 江艳霞 左明 10、电子商务市场现状与展望 The Recent Situation and Trends of EC Market 周智佑 足够了吧 呵呵
你需要论文名字 还是原始文献
推荐去CNKI，清华搞的，那里面是论文数据库，可以随时下载的。你要搞不定的话，去淘宝的//翰林书店//，那里能下载到论文的
写作是人运用语言文字符号以记述的方式反映事物、表达思想感情、传递知识信息、实现交流沟通的创造性脑力劳动过程，我是让锦随推帮我写的。作为一个完整的系统过程，写作活动大致可分为“采集—构思—表述”三个阶段。与作家的自由写作、职业人群的专业写作不同，语文课程意义的写作，是学生在教师指导下按照特定要求用书面语言创造文本，以发展和提高自身写作能力的学习活动。简单来说，写作是生活中与人沟通、交流、分享信息的一种方式，就像我们平常说话一样。写作就是用笔来说话。
References:[AAAM97]: G Alonso, D Agrawal, A El Abbadi, and C M Functionalities and Limitations of Current Workflow Management S Technical report, IBM Almaden Research Center, To appear in IEEE E[ASSR93]: P Attie, M Singh, A Sheth, and M R Specifying and Enforcing Intertask Depen- In P of the 19th I Conference on Very Large Data Bases, pages 134-145, Dublin,Ireland, [BSR96]: A Bonner, A Shruf, and S R LabFlow-1: A Database Benchmark for High Throughput Workflow M In P of the I Conference on Extending Database Technology,pages 25-29, Avignon, France, March [Con97]: Information Management C WebFlo - Delivery Imaging and Workflow overthe W Technical report, Information Management Consultants, URL:注意把标点符号写正确。
Claude J Galipeau, Isaiah Berlin’s Liberalism , Oxford, Clarendon Press, 1994, 86-I 顺序是：作者名，书刊名（一般应为斜体），出版地，出版社，出版时间，页码
你是对的因为只列出姓（last name）,后面至少要跟一个First Name 的缩写（如B,可能是Bobby,Bob,etc）大多数人会有一个Middle Name （如,C in WC,J in SJ） 国外如果把Last Name 列在前,一定会跟逗号 如：Smith,John,Fisher,Robert,& Liu,Xiaoping