HVAC Control in the New Millennium.pdf - HVAC.Amickracing

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HVAC Control in the New MillenniumThe portable wireless area will continue to explode. Cell phonebaseddigital technologies will compete with those meant only for data.Competing technologies for browser-equipped phone connections willclash while creating more features and lower prices. In the near futureInternet-connected telephone/pager/browser devices will becomewidely used.Web AdvancesThe Web was originally designed to display text. Later, graphicswere added and the Web grew quickly. In the future, Web sites will bemore intelligent about their users, their content and the content of othersites. New Web approaches include personal interfaces, bots and searchtechniques.The Web’s most noticeable trend is toward personalization. Wehave seen personal portals such as My Excite, where users customize thesite telling which categories and information they want.More Web sites are becoming aware of their visitors and customizingthe information they provide. These sites track visitors by givingthem log-on names and passwords or cookies that are stored in thebrowser. Web site cookies are files that store information on visitors tothat site.The next step is for a Web site to customize its information withoutyou expressly telling it what you want. Future sites will track what youtend to look at and offer it to you without your intervention.Collaborative filtering is another technique that makes sites appearsmart. Software from Firefly Network (which was acquired by Microsoft),Net Perceptions, and Andromedia match users and sites forproducts and services. These personalization services compare your webuses with others.DirectHit uses a variation of this for Web searching. When you aredoing a Web keyword search, Direct Hit points you at the site that themost users have visited. This type of popularity technique is used bysites like HotBot and ZDNet.Another trend is the use of bots or agents. Bots, which is short forrobots are tied to Web sites. They query other sites to help you findinformation which can include prices on products and services. In thefuture, you may have your own agents that reside in your computer.©2001 by The Fairmont Press, Inc. All rights reserved.
PC-based Control, Software and Bus TrendsIBM’s Almaden Research Center has been working on software forproviding Web Browsing Intelligence (WBI). These programs are similarto agents, but they act as intermediaries in the background to customizeand enhance the user environment. They might automatically retrieveand install software you need to view a Web page.HTML and XMLXML (eXtensible Markup Language) is emerging as the technologyto allow web sites to understand each others content. HTML provides thelanguage to define the layout of text and graphics on a web page. XML isnot a presentation language, like HTML, but a way of describing data.XML will enable more precise searching and let businesses sharedata more efficiently. The Web, which was built on HTML, will be rebuilton XML.Like HTML, XML grew out of the Standard Generalized MarkupLanguage (SGML). SGML is a metalanguage, which means it is a languagethat lets you create other languages. SGML allows various groupsin industry to create tags, elements, and attributes called DocumentType Definitions (DTDs) specific to their applications.HTML is a specific set of tags designed to display Web pages, butXML is a simpler metalanguage designed to allow groups to easily comeup with standard tags to describe the contents of specific types of files.XML is being utilized as the base for standardized tags for financialtransaction, vector graphics and multimedia applications. The OpenFinancial exchange (OFX) specification provides a common set of tags toallow users to manage finances and pay bills on-line.XML is a standard, so most software can be adapted to work withit. The future of XML is to allow applications of all types to exchangedata on the Web intelligently. XML is likely to be used in other ways aswell. In Office 2000, Microsoft is supporting XML as a file format, soMicrosoft Word or Excel documents and files could be viewed in anyXML-complaint browser.Web SearchingAnother area XML may improve is Web searching. Since XML tagsdescribe information in a document, the descriptions themselves can besearched. This reduces searching time by letting you be more specific.©2001 by The Fairmont Press, Inc. All rights reserved.
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HVAC ControlIn the New Millenniumby
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Table of ContentsChapter 1Chapter 2
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The use of wireless LANs may double
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munication technologies, predict th
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ing automation. This will continue
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Heat, Ventilation and Damper Contro
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Control Technology, Microelectronic
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Advanced HVAC Control, Information
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Page 155 and 156: Advanced HVAC Control, Information
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Computer Networks and Security 265C
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Computer Networks and SecurityInter
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Computer Networks and SecurityNetwo
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Computer Networks and SecurityEther
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Computer Networks and Securitystruc
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Computer Networks and SecurityA bro
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Computer Networks and SecurityThinn
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Computer Networks and Securityther
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Computer Networks and Securitywork.
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Computer Networks and Securitylogic
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Computer Networks and Securitythey
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Computer Networks and Security• n
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Computer Networks and Securitywork
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Computer Networks and SecurityMany
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Computer Networks and SecurityPure
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Computer Networks and SecurityThe m
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Computer Networks and Securityavail
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Computer Networks and SecuritySever
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Computer Networks and SecurityEffic
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Computer Networks and Security 305C
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Computer Networks and Security(CAD)
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Computer Networks and Securityand f
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Computer Networks and Securitymost
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Computer Networks and Securityconne
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Computer Networks and SecurityLonMa
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Computer Networks and SecurityIn De
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Computer Networks and Securitydevic
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Computer Networks and SecurityContr
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Computer Networks and SecurityThe C
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Computer Networks and SecurityMODBU
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Computer Networks and SecurityFigur
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Computer Networks and SecurityGatew
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Computer Networks and Securitytion
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Computer Networks and Securitycontr
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Building Automation, Wireless Techn
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Table 9-4. Internet Services——
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