外文翻译基于Web服务的无线食品点菜系统.docx
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外文翻译基于Web服务的无线食品点菜系统.docx
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外文翻译基于Web服务的无线食品点菜系统
附录A
WirelessFoodOrderingSystemBasedonWebService
Abstract—Currentwirelesscommunicationsenablepeopletoeasilyexchangeinformation,whilewebservicesprovideloosely-coupledandplatform-independentwaysoflinkingapplicationsacrosstheInternetorIntranet.Thispaperpresentsanintegrationofwirelesscommunicationtechnologiesandwebservicestechnologiestorealizeawirelessfoodorderingsystem.Inthissystem,itimplementswiredandwirelessdataaccesstotheserversandfoodorderingfunctionsthroughbothdesktopPCsandmobiledevicessuchasPDAsoverawired/wirelessintegratedlocalareanetwork.Tosurethesecurityofthesystem,thesecurewebservicearchitectureandsomesecuritystrategiestoensuremobilecommunicationsecurityarediscussed.Webservices-basedwirelessapplicationsonmobiledevicesprovideameansofconvenience,improvingefficiencyandaccuracyforrestaurantsbysavingtime,reducinghumanerrors,etc.
KeywordsWebServices;Wireless;FoodOrderingSystem;security
I.INTRODUCTION
Therapiddevelopmentsininformationtechnology,particularlyinwirelesscommunicationandwebservicestechnologies,aregreatlychangingthewaypeopleaccessandworkwithinformation.TheconvenienceandpowerfulfunctionalityofferedbymobiledevicessuchasPDAs,hasencouragedmanypeopletoinvestigatethebenefitsofusingthem.Wirelessandhandhelddevicesaboundasvendorspitchthecommonthemesofone-to-onecomputing,instantcommunicationandanytime,anywhereinformationaccess.Whilewebservicesprovideatechnologyforservice-orientedcomputing.Webservicesallowprogramswrittenindifferentlanguagesondifferentplatformstocommunicatewitheachotherinastandardway.
Byintegratingthesetechnologies,consistentbusinessmodelscanbeimplementedonabroadarrayofdevices:
notjustonmobiledevicesoperatingovermobilenetworks,butalsoonserversandPCsconnectedtotheInternet.
Thefoodorderingprocessinrestaurantsrequiresthecoordinationofsimpletasks.Instructionflowsmainlyfromcustomerstowaitersthentokitchenand/orthebarstaff,finallytothecashier.Inamediumtolargeandbusyrestaurantthiscoordinationisachallengeandrequiresanefficientorderingsystem.Errorsinorderingprocessesleadtoincorrectoroutofsequencemealpreparationornon-consumableandresultsinaddedcosttothebusiness.
Thispaperpresentsanintegrationofwirelesscommunicationtechnologiesandwebservicestechnologiestorealizeawirelessfoodorderingsystem.Inthissystem,it
implementswiredandwirelessdataaccesstotheserversandfoodorderingfunctionsthroughbothdesktopPCsandmobiledevicessuchasPDAsoverawired/wirelessintegratedlocalareanetwork.Thesystemisbasedonsecurewebservicearchitectureandsomesecuritystrategiestoensuremobilecommunicationsecurityareadopted.Webservices-basedwirelessapplicationsonmobiledevicesprovideameansofconvenience,improvingefficiencyandaccuracy.
II.WIRELESSLANANDWEBSERVICES
A.WirelessLAN
AwirelessLAN(WLAN,WirelessLocalAreaNetwork)isaflexibledatacommunicationsystemimplementedasanextensiontoorasanalternativefor,awiredLANwithinabuildingorcampus.Usingelectromagneticwaves,WLANstransmitandreceivedataovertheair,minimizingtheneedforwiredconnections.Thus,WLANscombinedataconnectivitywithusermobility,and,throughsimplifiedconfiguration,enablemovableLANs.
TheIEEE802.11groupofstandardsspecifiesthetechnologiesforwirelessLANs.802.11standardsusetheEthernetprotocolandCSMA/CA(carriersensemultipleaccesswithcollisionavoidance)forpathsharingandincludeanencryptionmethod,theWiredEquivalentPrivacyalgorithm.The802.11a,b,andgstandardsarethemostcommonforhomewirelessaccesspointsandlargebusinesswirelesssystems.
AremoteusercanuseWLANtoaccesstheInternetthroughpublicaccesspoints(“hotspots”)providedbyserviceproviders.Whenintheoffice,theymayaccessWLANthroughwirelessaccesspoints.Inenterpriseenvironments,WLANsareusuallycomplementedbysecuritymechanisms,suchasVPN(VirtualPrivateNetwork).
Overthelastseveralyears,WLANshavegainedstrongpopularityinsomemarkets,includingthehealth-care,retail,manufacturing,andacademicareas.Theseindustrieshaveprofitedfromtheproductivitygainsofusinghand-heldterminalsandnotebookcomputerstotransmitreal-timeinformationtocentralizedhostsforprocessing.TodayWLANsarebecomingmorewidelyrecognizedasageneral-purposeconnectivityalternativeforabroadrangeofbusinesscustomers.
B.WebServices
QuicklybecomingasignificanttechnologyintheevolutionoftheInternetiswebservices,asetofstandardsthatcaninterconnectsystemsoveraverityofnetworks.ItisanopenXML-based
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