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算法設(shè)計與分析
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為了便于讀者進(jìn)行系統(tǒng)學(xué)習(xí)、分類整理知識點及遇到問題時能夠快速找到求解的方法,本書按照算法策略進(jìn)行劃分,每一章都引入了若干個經(jīng)典問題。通過問題的分析、計算模型的建立、算法的設(shè)計與描述、算法的分析來深入解讀每一種算法策略所能解決的問題范疇及方法。全書共分9章,內(nèi)容包括:算法設(shè)計基礎(chǔ)、算法效率分析基礎(chǔ)、迭代法、蠻力法、分治策略、回溯與分支界限、貪心算法、動態(tài)規(guī)劃、隨機算法。本書非常注重教材的可讀性和實用性,以問題分析→模型設(shè)計→算法設(shè)計描述→算法分析為技術(shù)線路,幫助讀者迅速掌握算法設(shè)計要點,規(guī)范算法設(shè)計、分析及實現(xiàn)的方法。書中例題的問題分析和模型設(shè)計模塊用于培養(yǎng)讀者的抽象設(shè)計能力,算法設(shè)計模塊用于提高讀者運用計算機求解問題的能力,算法分析模塊用于幫助讀者運行用數(shù)學(xué)工具對算法進(jìn)行客觀分析。同時,本書編寫時也考慮到初學(xué)者所面臨的困難,在算法設(shè)計與描述中,刻意增加了基于源代碼的程序設(shè)計與實現(xiàn)環(huán)節(jié),從而全方位地幫助讀者提高算法設(shè)計與分析實踐能力和理論水平。

張小東主編 ·數(shù)據(jù)庫 ·9.4萬字

Internet of Things Programming with JavaScript
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LearntheartofbringingtheInternetofThingsintoyourprojectswiththepowerofJavaScriptAboutThisBook?ThisisapracticalguidetohelpyouconfigureandbuildacompletedistributedIoTsystemfromscratchusingJavaScript?UtilizethepowerofNodeandHTML5todevelopwebservicesandacentralizedwebserver,enablinghigh-levelcommunicationbetweenconnecteddevices?ControlallyourconnecteddevicesfromthebrowserbysettingupacommondashboardWhoThisBookIsForThisbookisfordeveloperswhoareinterestedinlearninghowtocommunicatewithconnecteddevicesinJavaScripttosetupanIoTsystem.SomebasicknowledgeofJavaScriptisexpected.HobbyistswhowanttoexplorethepotentialofIoTinJavaScriptwillalsofindthisbookuseful.WhatYouWillLearn?DeveloptheskillstoconnecteddevicespreparedthefieldtointeractwiththedevicesinanetworksystemInternetofThings?Findouthowtoconnectsensorsandactuatorstothedevices?Senddatatoawebserverconnecteddevices?UnderstandInternetofthingsusingwebservicesanddatabase?ConfigureadashboardusingHTML5andJavaScript?Controldevicesconnectedfromadashboard?Monitordifferentdevicesfromthedashboard?BuildanappforasmartphonetocontroldifferentdevicesInDetailTheInternetofThings(IoT)isanentirelynewplatformfordevelopersandengineers,butonethingthatremainsconsistentaswemoveintothisnewworld,aretheprogramminglanguages.JavaScriptisthemostwidelyusedlanguageovertheInternet,andwithIoTgainingmomentum,youwilllearnhowtoharnessthepowerofJavaScripttointeractwithconnecteddevices.ThisbookwillteachyouhowtointeractwithendpointdevicesbydevelopingwebservicesinJavaScriptandalsosetupaninterfacetocontrolallconnecteddevices.Thisbookbeginswithsettingupacentralizedwebserverthatservesasahubforallconnecteddevices.Thebookthenprogressesfurthertowardsbuildingwebservicestofacilitatehigh-levelcommunicationbetweenconnecteddevices.UsingArduinoandRaspberryPiZeroasendpointdevices,thebookwillshowyouhowdevicescancommunicatewitheachother,performawiderangeoftasks,andalsobecontrolledfromacentralizedlocationusingJavaScript.Thebookendswithcreatingahybridapptocontrolthedevicesthatcanberunfromabrowserorinstalledonasmartphone.StyleandapproachThisbookoffersstep-by-stepguidanceonhowtosetupadistributedIoTsystemusingJavaScript.ItwillteachyouhowtointeractwithendpointdevicesbydevelopingwebservicesinJavaScriptandalsosetupaninterfaceforcontrollingallconnecteddevices.

Rubén Oliva Ramos ·數(shù)據(jù)庫 ·2.6萬字

Internet of Things with Python
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InteractwiththeworldandrapidlyprototypeIoTapplicationsusingPythonAboutThisBook?RapidlyprototypeevencomplexIoTapplicationswithPythonandputthemtopracticaluse?EnhanceyourIoTskillswiththemostup-to-dateapplicabilityinthefieldofwearabletech,smartenvironments,andhomeautomation?Interactwithhardware,sensors,andactuatorsandcontrolyourDIYIoTprojectsthroughPythonWhoThisBookIsForThebookisidealforPythondeveloperswhowanttoexplorethetoolsinthePythonecosysteminordertobuildtheirownIoTapplicationsandworkonIoT-relatedprojects.ItisalsoaveryusefulresourcefordeveloperswithexperienceinotherprogramminglanguagesthatwanttoeasilyprototypeIoTapplicationswiththeIntelGalileoGen2board.WhatYouWillLearn?PrototypeanddevelopIoTsolutionsfromscratchwithPythonastheprogramminglanguage?DevelopIoTprojectswithIntelGalileoGen2boardalongwithPython?WorkwiththedifferentcomponentsincludedintheboardsusingPythonandtheMRAAlibrary?Interactwithsensors,actuators,andshields?WorkwithUARTandlocalstorage?InteractwithanyelectronicdevicethatsupportstheI2Cbus?Allowmobiledevicestointeractwiththeboard?Workwithreal-timeIoTandcloudservices?UnderstandBigDataandIoTanalyticsInDetailInternetofThings(IoT)isrevolutionizingthewaydevices/thingsinteractwitheachother.AndwhenyouhaveIoTwithPythononyourside,you'llbeabletobuildinteractiveobjectsanddesignthem.Thisbookletsyoustayattheforefrontofcutting-edgeresearchonIoT.We'llopenupthepossibilitiesusingtoolsthatenableyoutointeractwiththeworld,suchasIntelGalileoGen2,sensors,andotherhardware.Youwilllearnhowtoread,write,andconvertdigitalvaluestogenerateanalogoutputbyprogrammingPulseWidthModulation(PWM)inPython.Youwillgetfamiliarwiththecomplexcommunicationsystemincludedintheboard,soyoucaninteractwithanyshield,actuator,orsensor.Lateron,youwillnotonlyseehowtoworkwithdatareceivedfromthesensors,butalsoperformactionsbysendingthemtoaspecificshield.You'llbeabletoconnectyourIoTdevicetotheentireworld,byintegratingWiFi,Bluetooth,andInternetsettings.Witheverythingready,youwillseehowtoworkinrealtimeonyourIoTdeviceusingtheMQTTprotocolinpython.Bytheendofthebook,youwillbeabletodevelopIoTprototypeswithPython,libraries,andtools.StyleandapproachThisbooktakesatutorial-likeapproachwithmissioncriticalchapters.Theinitialchaptersareintroductionsthatsetthepremiseforusefulexamplescoveredinlaterchapters.

Gastón C. Hillar ·數(shù)據(jù)庫 ·8.6萬字

軟件成本度量國家標(biāo)準(zhǔn)實施指南:理論、方法與實踐
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為落實工業(yè)和信息化部優(yōu)化軟件產(chǎn)業(yè)環(huán)境的工作部署,進(jìn)一步推動功能規(guī)模測量、軟件開發(fā)成本度量、軟件測試成本度量、IT運維成本度量和云服務(wù)計量指標(biāo)等方面的標(biāo)準(zhǔn)推廣及深化應(yīng)用,本書系統(tǒng)地闡述軟件成本度量理論體系,深入解讀軟件成本度量標(biāo)準(zhǔn)內(nèi)容及實施要點,結(jié)合不同場景及典型案例給出具體的應(yīng)用指導(dǎo)。本書正文分5個部分,共11章。第一部分是軟件成本度量概述和軟件規(guī)模測量方法(第1~2章),第二部分是GB/T36964—2018《軟件工程軟件開發(fā)成本度量規(guī)范》標(biāo)準(zhǔn)解讀、實施指南和案例分析(第3~5章),第三部分是GB/T32911—2016《軟件測試成本度量規(guī)范》標(biāo)準(zhǔn)解讀、實施指南和案例分析(第6~8章),第四部分是其他軟件相關(guān)成本度量標(biāo)準(zhǔn)(第9~10章),對IT運維成本度量(國標(biāo)在研)和GB/T37735—2019《信息技術(shù)云計算云服務(wù)計量指標(biāo)》進(jìn)行介紹,第五部分是軟件成本度量相關(guān)技術(shù)展望(第11章)。本書還包含5個附錄:附錄A中國軟件行業(yè)基準(zhǔn)數(shù)據(jù)(2019年),該數(shù)據(jù)可作為軟件研發(fā)與測試成本測算的依據(jù);附錄B涉及本書標(biāo)準(zhǔn)實施的常見問題及回答(Q&A),附錄C標(biāo)準(zhǔn)術(shù)語和定義,附錄D快速功能點分析方法介紹,附錄E調(diào)整因子參數(shù)表。

張旸旸 ·數(shù)據(jù)庫 ·11.7萬字

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