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名詞解釋:坐標(biāo)反算

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根據(jù)兩點(diǎn)的坐標(biāo)計(jì)算兩點(diǎn)連線的坐標(biāo)方位角和水平距離

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Intheearlieststagesofman'sdevelopmenthehadnomoreneedofmoneythananimalshave.Hewascontentwithverysimpleformsofshelter,madehisownroughtoolsandweaponsandcouldprovidefoodandclothingforhimselfandhisfamilyfromnaturalmaterialsaroundhim.Ashebecamemorecivilized,however,hebegantowantbettershelter,moreefficienttoolsandweapons,andmorecomfortableandmorelastingclothingthancouldbeprovidedbyhisownneighborhoodorbytheworkofhisownunskilledhands.Forthesethingshehadtoturntotheskilledpeoplesuchassmiths,leatherworkersorcarpenters.Itwasthenthatthequestionofpaymentarose. Atfirsthegotwhathewantedbyasimpleprocessofexchange.Thesmithwhohadnotthetimetolookafterlandorcattlewasgladtotakemeatorgrainfromthefarmerinexchangeforanaxeoraplough.Butasmoreandmoregoodswhichhadnofixedexchangevaluecameonthemarket,exchangebecametoocomplicatedtobesatisfactory.Anotherproblemarosewhenthosewhomadethingswantedtogetstocksofwoodorleather,oriron,buthadnothingtoofferinexchangeuntiltheirfinishedgoodswereready.Thusthedifficultiesofexchangeledbydegreestotheinventionofmoney.Insomecountrieseasilyhandledthingslikeseedsorshellsweregivenacertainvalueandthefarmer,insteadofpayingthesmithforanewaxebygivinghimsomemeatorgrain,gavehimsomanyshells.Ifthesmithhadanyshellsleftwhenhehadboughthisfood,hecouldgetstocksoftherawmaterialsofhistrade.Insomecountriesquitelargethingssuchascowsorcamelsorevenbigflatstoneswereusedfortrade.Later,piecesofmetal,bearingvaluesaccordingtotherarityofthemetalandthesizeofthepieces,orcoinswereused.Moneyasweknowithadarrived. 1.Exchangeofgoodsbecamedifficultbecause_________. Amanbecamemorecivilized Bsmithsbegantolookafterlandorcattleintheirsparetime Cmoreandmoregoodswhichhadnofixedexchangealuescametothemarker Dfarmershadn'tenoughgrainormeattoprovidefor skilledworkers 2.Moneywasnotuseduntil_______. Apaperwasinvented Bpeoplepracticedasimpleprocessofexchange CnothingcouldbeofferedinexchangeDtheexchangeofonethingforanotherbecametoocomplicated 3.Thebesttitleforthispassageis_____. AWhatismoney BWhataremoney'sfunctions. CTheimportanceofmoney DThebeginningofmoney
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Howshopscanexploitpeople'sherdmentalitytoincreasesales 1.ATRIPtothesupermarketmaynotseemlikeanexerciseinpsychologicalwarfare—butitis.Shopkeepersknowthatfillingastorewiththearomaoffreshlybakedbreadmakespeoplefeelhungryandpersuadesthemtobuymorefoodthantheyhadintended.Stockingthemostexpensiveproductsateyelevelmakesthemsellfasterthancheaperbutlessvisiblecompetitors.Nowresearchersareinvestigatinghow“swarmintelligence”(thatis,howants,beesoranysocialanimal,includinghumans,behaveinacrowd)canbeusedtoinfluencewhatpeoplebuy. 2.AtarecentconferenceonthesimulationofadaptivebehaviourinRome,Zeeshan-ul-hassanUsmani,acomputerscientistfromtheFloridaInstituteofTechnology,describedanewwaytoincreaseimpulsebuyingusingthisphenomenon.Supermarketsalreadyencourageshopperstobuythingstheydidnotrealisetheywanted:forinstance,byplacingeverydayitemssuchasmilkandeggsatthebackofthestore,forcingshopperstowalkpastothertemptinggoodstoreachthem.MrUsmaniandRonaldoMenezes,alsooftheFloridaInstituteofTechnology,setouttoenhancethistendencytobuymorebyplayingontheherdinstinct.Theideaisthat,ifacertainproductisseentobepopular,shoppersarelikelytochooseittoo.Thechallengeistokeepcustomersinformedaboutwhatothersarebuying. 3.Entersmart-carttechnology.InMrUsmani'ssupermarketeveryproducthasaradiofrequencyidentificationtag,asortofbarcodethatusesradiowavestotransmitinformation,andeverytrolleyhasascannerthatreadsthisinformationandrelaysittoacentralcomputer.Asacustomerwalkspastashelfofgoods,ascreenontheshelftellshimhowmanypeoplecurrentlyintheshophavechosenthatparticularproduct.Ifthenumberishigh,heismorelikelytoselectittoo. 4.MrUsmani's“swarm-moves”modelappealstosupermarketsbecauseitincreasessaleswithouttheneedtogivepeoplediscounts.Anditgivesshoppersthesatisfactionofknowingthattheyboughtthe“right”product—thatis,theoneeveryoneelsebought.Themodelhasnotyetbeentestedwidelyintherealworld,mainlybecauseradiofrequencyidentificationtechnologyisnewandhasonlybeeninstalledexperimentallyinsomesupermarkets.ButMrUsmanisaysthatbothWal-MartinAmericaandTescoinBritainareinterestedinhiswork,andtestingwillgetunderwayinthespring. 5.Anotherrecentstudyonthepowerofsocialinfluenceindicatesthatsalescould,indeed,beboostedinthisway.MatthewSalganikofColumbiaUniversityinNewYorkandhiscolleagueshavedescribedcreatinganartificialmusicmarketinwhichsome14,000peopledownloadedpreviouslyunknownsongs.Theresearchersfoundthatwhenpeoplecouldseethesongsrankedbyhowmanytimestheyhadbeendownloaded,theyfollowedthecrowd.Whenthesongswerenotorderedbyrank,butthenumberoftimestheyhadbeendownloadedwasdisplayed,theeffectofsocialinfluencewasstilltherebutwaslesspronounced.Peoplethusfollowtheherdwhenitiseasyforthemtodoso. 6.InJapanachainofconvenienceshopscalledRanKingRanQueenhasbeenorderingitsproductsaccordingtosalesdatafromdepartmentstoresandresearchcompanies.Theshopssellonlythemostpopularitemsineachproductcategory,andtherankingsareupdatedweekly.Icosystem,acompanyinCambridge,Massachusetts,alsoaimstoexploitknowledgeofsocialnetworkingtoimprovesales. 7.Andthepsychologythatworksinphysicalstoresisjustaspotentontheinternet.OnlineretailerssuchasAmazonareadeptattellingshopperswhichproductsarepopularwithlike-mindedconsumers.Evenintheprivacyofyourhome,youcanstillbepartoftheswarm. Questions1-6 Completethesentencesbelowwithwordstakenfromthereadingpassage.UseNOMORETHANTHREEWORDSforeachanswer. 1.Shopownersrealizethatthesmellof_______________canincreasesalesoffoodproducts. 2.Inshops,productsshelvedatamorevisiblelevelsellbettereveniftheyaremore_______________. 3.AccordingtoMr.Usmani,withtheuseof“swarmintelligence”phenomenon,anewmethodcanbeappliedtoencourage_______________. 4.Onthewaytoeverydayitemsatthebackofthestore,shoppersmightbetemptedtobuy_______________. 5.Ifthenumberofbuyersshownonthe_______________ishigh,othercustomerstendtofollowthem. 6.Usingthe“swarm-moves”model,shopownersdonothavetogivecustomers_______________toincreasesales.
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