488588香港开奖记录

本書主要介紹信號完整性（SignalIntegrity，SI）、電源完整性（PowerIntegrity，PI）和電磁兼容性（ElectromagneticCompatibility，EMC）等的基礎知識和設計要點，并結合實例詳細介紹了利用ANSYS2019仿真平臺完成相關仿真與分析的方法，使讀者不僅能深入了解高速電路設計的理念，還能掌握ANSYS2019仿真操作流程和分析技巧，并運用類似的設計方法去解決相關的問題。本書適合從事芯片封裝、PCB設計及數字電路硬件研發的工程技術人員閱讀使用，也可作為高等學校相關專業的教學用書。

·9.9萬字

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數學糖果1

本書重視關聯性。學習的樂趣之一在于知識的關聯性。本書以數學概念、數學思維和數學家為關聯點，將與關聯點相關的星星點點的數學知識聯結成系統，嘗試引導讀者從發散性的思考中尋找樂趣，從系統性的總結中拓展認知。本書的重點不是分享解題技巧，而是期望展示數學的趣味性。希望讀者在汲取校內的數學正餐營養之外，能通過本書多多體驗甜點般的數學趣味：洪水決堤可關聯到埃及的幾何學及中國的勾三股四弦五，童話中糖果屋的故事蘊含著數學中的還原思想，笛卡兒開創性的數學思想受益于他早晨躺在床上冥想……本書表達了筆者對數學的一種看法。數學不等于解題，它是認識多彩世界的一種角度。從數學角度放眼，可看見許多有用的知識、有趣的想法、傳奇的故事，它們在內容上與數學相關，但不囿于數學教材所關注的范疇。數學不只存在于校內課堂，它遍布在更大的世界。本書以數學為切入點，將趣味性的知識、想法、故事關聯成冊，適合小學高年級學生和中學生閱讀。

·10.2萬字

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Blockchain By Example

TheBlockchainisarevolutionpromisinganewworldwithoutmiddlemen.Technically,itisanimmutableandtamper-proofdistributedledgerofalltransactionsacrossapeer-to-peernetwork.Withthisbook,youwillgettogripswiththeblockchainecosystemtobuildreal-worldprojects.Thisbookwillwalkyouthroughtheprocessofbuildingmultipleblockchainprojectswithdifferentcomplexitylevelsandhurdles.Eachprojectwillteachyoujustenoughaboutthefield'sleadingtechnologies,Bitcoin,Ethereum,Quorum,andHyperledgerinordertobeproductivefromtheoutset.Asyoumakeyourwaythroughthechapters,youwillcoverthemajorchallengesthatareassociatedwithblockchainecosystemssuchasscalability,integration,anddistributedfilemanagement.Intheconcludingchapters,you’lllearntobuildblockchainprojectsforbusiness,runyourICO,andevencreateyourowncryptocurrency.BlockchainbyExamplealsocoversarangeofprojectssuchasBitcoinpaymentsystems,supplychainsonHyperledger,anddevelopingaTontineBankEveryisusingEthereum.Bytheendofthisbook,youwillnotonlybeabletotacklecommonissuesintheblockchainecosystem,butalsodesignandbuildreliableandscalabledistributedsystems.

·9.8萬字

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Foundations of Blockchain

Blockchaintechnologyisacombinationofthreepopularconcepts:cryptography,peer-to-peernetworking,andgametheory.Thisbookisforanyonewhowantstodiveintoblockchainfromfirstprinciplesandlearnhowdecentralizedapplicationsandcryptocurrenciesreallywork.Thisbookbeginswithanoverviewofblockchaintechnology,includingkeydefinitions,itspurposesandcharacteristics,soyoucanassessthefullpotentialofblockchain.Allessentialaspectsofcryptographyarethenpresented,asthebackboneofblockchain.Forreaderswhowanttostudytheunderlyingalgorithmsofblockchain,you’llseePythonimplementationsthroughout.You’llthenlearnhowblockchainarchitecturecancreatedecentralizedapplications.You’llseehowblockchainachievesdecentralizationthroughpeer-to-peernetworking,andhowasimpleblockchaincanbebuiltinaP2Pnetwork.You’lllearnhowtheseelementscanimplementacryptocurrencysuchasBitcoin,andthewiderapplicationsofblockchainworkthroughsmartcontracts.Blockchainoptimizationtechniques,andblockchainsecuritystrategiesarethenpresented.Tocompletethisfoundation,weconsiderblockchainapplicationsinthefinancialandnon-financialsectors,andalsoanalyzethefutureofblockchain.Astudyofblockchainusecasesincludessupplychains,paymentsystems,crowdfunding,andDAOs,whichroundsoutyourfoundationinblockchaintechnology.

·9.2萬字

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Hands-On Blockchain for Python Developers

Blockchainisseenasthemaintechnologicalsolutionthatworksasapublicledgerforallcryptocurrencytransactions.Thisbookservesasapracticalguidetodevelopingafull-fledgeddecentralizedapplicationwithPythontointeractwiththevariousbuildingblocksofblockchainapplications.Hands-OnBlockchainforPythonDevelopersstartsbydemonstratinghowblockchaintechnologyandcryptocurrencyhashingworks.Youwillunderstandthefundamentalsandbenefitsofsmartcontractssuchascensorshipresistanceandtransactionaccuracy.Asyousteadilyprogress,you'llgoontobuildsmartcontractsusingVyper,whichhasasimilarsyntaxtoPython.Thisexperiencewillfurtherhelpyouunraveltheotherbenefitsofsmartcontracts,includingreliablestorageandbackup,andefficiency.You'llalsouseweb3.pytointeractwithsmartcontractsandleveragethepowerofboththeweb3.pyandPopulusframeworktobuilddecentralizedapplicationsthatoffersecurityandseamlessintegrationwithcryptocurrencies.Asyouexplorelaterchapters,you'lllearnhowtocreateyourowntokenontopofEthereumandbuildacryptocurrencywalletgraphicaluserinterface(GUI)thatcanhandleEthereumandEthereumRequestforComments(ERC-20)tokensusingthePySide2library.Thiswillenableuserstoseamlesslystore,send,andreceivedigitalmoney.Towardtheend,you'llimplementInterPlanetaryFileSystem(IPFS)technologyinyourdecentralizedapplicationtoprovideapeer-to-peerfilesystemthatcanstoreandexposemedia.Bytheendofthisbook,you'llbewell-versedinblockchainprogrammingandbeabletobuildend-to-enddecentralizedapplicationsonarangeofdomainsusingPython.

·8.8萬字

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紅發克拉拉的數學奇想

本書通過50個生活話題展現了數學知識和思維方法。作者在各個學科、日常生活和時事新聞中尋找數學的身影，從簡單的問題中提煉出代數、幾何、圖論、數論的知識，以生動而清晰的方式講述了數學故事，揭示了生活中無處不在的數學原理和意想不到的趣題，告訴大家如何通過數學理解、解決一些日常現實問題。本書適合喜愛數學和科學知識的各年齡層讀者閱讀。

·7.8萬字

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現代啟發式優化方法及其應用

本書共分7章，每章內容自成體系，全書又構成一個整體。第一章為緒論，主要介紹現代啟發式優化算法的概況和經典智能優化算法遺傳算法、蟻群算法和粒子群算法。第2章至第6章分別介紹螢火蟲算法、布谷鳥算法、萬有引力算法、蝙蝠算法、花朵授粉算法的原理機制、流程代碼、改進策略、理論分析、仿真測試、問題應用等內容。第7章對當前啟發式優化算法的研究應用現狀進行總結和展望。全書在縱覽啟發式優化方法的基礎上，對近年提出的一些活躍算法，尤其是生物元啟發式智能優化算法，從算法理論、機制、流程、代碼、改進和應用等方面進行了系統闡述和深入分析，通過數學和算法分析方法給出了嚴格的理論證明，并通過標準測試函數集和實際工程案例驗證和分析了這些智能優化算法及其改進方法的尋優性能和應用效果，使讀者能較深入地了解現代智能優化算法的機制、改進和應用。

·8.2萬字

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Blockchain Quick Reference

BlockchainQuickReferencetakesyouthroughtheelectrifyingworldofblockchaintechnologyandisdesignedforthosewhowanttopolishtheirexistingknowledgeregardingthevariouspillarsoftheblockchainecosystem.Thisbookisyourgo-toguide,teachingyouhowtoapplyprinciplesandideasformakingyourlifeandbusinessbetter.Youwillcoverthearchitecture,InitialCoinOfferings(ICOs),tokens,smartcontracts,andterminologiesoftheblockchaintechnology,beforestudyinghowtheywork.Allyouneedisacuriousmindtogetstartedwithblockchaintechnology.Onceyouhavegraspedthebasics,youwillexplorecomponentsofEthereum,suchasethertokens,transactions,andsmartcontracts,inordertobuildsimpleDapps.YouwillthenmoveontolearningwhySolidityisusedspecificallyforEthereum-basedprojects,followedbyexploringdifferenttypesofblockchainwitheasy-to-followexamples.Allthiswillhelpyoutacklechallengesandproblems.Bytheendofthisbook,youwillnotonlyhavesolvedcurrentandfutureproblemsrelatingtoblockchaintechnologybutwillalsobeabletobuildefficientdecentralizedapplications.

·7.9萬字

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全局優化理論幾種算法的改進研究

本文共七章：第一章緒論介紹研究的背景及意義。第二章對全局優化理論基礎和優化算法進行簡要介紹。第三章介紹Hopfield網絡優化、混沌優化的基本知識和標準粒子群算法及部分改進的粒子群算法。把模擬退火隨機優化算法與Hopfield網絡梯度下降優化算法有機結合起來，第四章提出一種嵌入式混合優化算法SA-HNN，并通過數值實驗驗證算法的可行性和優越性。第五章提出了3種改進的粒子群優化算法，同時給出了數值實驗結果。第六章對填充函數方法進行詳細介紹，構造了一類新的無參數填充函數，從理論上證明了其具有填充函數的性質，并提出了基于混沌和填充函數的全局優化方法。第七章是論文的總結與展望，并給出了進一步的研究內容和方向。

·7.8萬字

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Security with Go

SecuritywithGoisaimedatdeveloperswithbasicsinGotothelevelthattheycanwritetheirownscriptsandsmallprogramswithoutdifficulty.Readersshouldbefamiliarwithsecurityconcepts,andfamiliaritywithPythonsecurityapplicationsandlibrariesisanadvantage,butnotanecessity.

·7.1萬字

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時滯隨機系統的微分博弈理論及應用

該書以工程和經濟金融領域中廣泛使用的時滯隨機系統為研究對象，利用動態優化理論中的隨機最大值原理和動態規劃等方法，系統研究時滯隨機系統的微分博弈問題，得到了博弈系統的鞍點均衡策略、納什均衡策略、Stackelberg均衡策略及Pareto均衡策略的存在條件和顯式表達，并將所得結果應用于現代魯棒控制理論中的隨機H2/H∞控制以及數理金融中的投資與消費選擇問題，豐富了博弈論的相關研究。

·5.7萬字

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Blockchain for Business 2019

BlockchainforBusiness2019isacomprehensiveguidethatenablesyoutobringinvariousblockchainfunctionalitiestoextendyourexistingbusinessmodelsandmakecorrectfully-informeddecisions.Youwilllearnhowdecentralizedapplicationsaretransformingnumerousbusinesssectorsthatareexpectedtoplayahugeroleinthefuture.Youwillseehowlargecorporationsarealreadyimplementingblockchaintechnologynow.Youwillthenlearnaboutthevariousblockchainservices,suchasBitcoin,Ethereum,Hyperledger,andotherstounderstandtheirusecasesinavarietyofbusinessdomains.Youwilldevelopasolidfundamentalunderstandingofblockchainarchitecture.Movingahead,youwillgettogripswiththeinnerworkingsofblockchain,withdetailedexplanationsofmining,decentralizedconsensus,cryptography,smartcontracts,andmanyotherimportantconcepts.Youwilldelveintoarealisticviewofthecurrentstateofblockchaintechnology,alongwithitsissues,limitations,andpotentialsolutionsthatcantakeittothenextlevel.Bytheendofthisbook,youwillallbewellversedinthelatestinnovationsanddevelopmentsintheemergingblockchainspace.

·6萬字

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硅谷工程師爸爸的超強數學思維課：激發孩子的數感天賦

硅谷工程師爸爸的超強數學思維課是一套親子共讀書，可以讓父母深入、系統的了解培養孩子的數學思維與邏輯思維應該輔導孩子哪些知識點，例如將數學知識點與STEAM（Science,Technology,Engineering,Art&Math）教育的相關項目結合起來，讓孩子學會用數學解決生活中的問題，并且提供了很多實操案例激發孩子的思維能力。激發孩子的數感天賦一書的目的是訓練孩子的數感，一共有6章，每章深入講解一個數學知識點，涵蓋少兒階段應掌握的數字、大小的比較、輕重的比較、空間方位、間隔問題、排列組合等基本數學概念。

·2萬字

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Security Tokens and Stablecoins Quick Start Guide

Thefailureofinitialcoinofferings(ICOs)isnoaccident,asmostICOsdonotlinktoarealassetandarenotregulated.RealizingtheshortcomingsofICOs,theblockchaincommunityandpotentialinvestorsembracedsecuritytokenofferings(STOs)andstablecoinsenthusiastically.Inthisbook,westartwithanoverviewoftheblockchaintechnologyalongwithitsbasicconcepts.WeintroducetheconceptbehindSTO,andcoverthebasicrequirementsforlaunchingaSTOandtherelevantregulationsgoverningitsissuance.WediscussU.S.securitieslawsdevelopmentinlaunchingsecuritydigitaltokensusingblockchaintechnologyandshowsomerealusecases.WealsoexploretheprocessofSTOlaunchesandlegalconsiderations.WeintroducepopularsecuritytokensinthecurrentblockchainspaceandtalkabouthowtodevelopasecuritytokenDApp,includingsmartcontractdevelopmentforERC1404tokens.Later,you'lllearntobuildfrontendsidefunctionalitiestointeractwithsmartcontracts.Finally,wediscussstablecointechnicaldesignfunctionalitiesforissuingandoperatingSTOtokensbyinteractingwithEthereumsmartcontracts.Bytheendofthisbook,youwillhavelearnedmoreaboutSTOsandgainedadetailedknowledgeofbuildingrelevantapplications—allwiththehelpofpracticalexamples.

·5.6萬字

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Ethereum Smart Contract Development

IfyouwanttoknowtheinsandoutsoftheEthereumnetworkandbuildyourowndecentralizedapplications,thenthisbookiswhatyouneed!ThisbookisforanyonewhoisinterestedinblockchainandwantstobecomeanEthereumdeveloper.It’sidealforexistingEthereumdeveloperswhowanttodevelopEthereumusingsmartcontracts.Basicknowledgeofcryptographyisexpectedbutisnotmandatory.

·5.3萬字

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Data Visualization：a successful design process

Acomprehensiveyetquickguidetothebestapproachestodesigningdatavisualizations,withrealexamplesandillustrativediagrams.Whateverthedesiredoutcomeensuresuccessbyfollowingthisexpertdesignprocess.Thisbookisforanyonewhohasresponsibilityfor,orisinterestedintryingtofindinnovativeandeffectivewaystovisuallyanalyzeandcommunicatedata.Thereisnoskill,noknowledgeandnorole-basedpre-requisitesorexpectationsofanyonereadingthisbook.

·5.1萬字

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Hyperledger Cookbook

Hyperledgerisanopen-sourceprojectandcreatesprivateblockchainapplicationsforarangeofdomains.Thisbookwillbeyourdeskreferenceasyouexplorecommonandnot-so-commonchallengesfacedwhilebuildingblockchainnetworksusingHyperledgerservices.We'llworkthroughallHyperledgerplatformmodulestounderstandtheirservicesandfeaturesandbuildend-to-endblockchainapplicationsusingvariousframeworksandtoolssupportedbyHyperledger.Thisbook'sindependent,recipe-basedapproach(packedwithreal-worldexamples)willfamiliarizeyouwiththeblockchaindevelopmentcycle.Frommodelingabusinessnetworktointegratingwithvarioustools,youwillcoveritall.We'llcovercommonandnot-so-commonchallengesfacedintheblockchainlifecycle.Later,we'lldelveintohowwecaninteractwiththeHyperledgerFabricblockchain,coveringalltheprinciplesyouneedtomaster,suchaschaincode,smartcontracts,andmuchmore.We'llalsoaddressthescalabilityandsecurityissuescurrentlyfacedinblockchaindevelopment.Bytheendofthisbook,youwillbeabletoimplementeachrecipetoplan,design,andcreateafull-fledged,private,decentralizedapplicationtomeetorganizationalneeds.

·4.9萬字

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Blockchain for Decision Makers

Inadditiontocryptocurrencies,blockchain-basedappsarebeingdevelopedindifferentindustriessuchasbanking,supplychain,andhealthcaretoachievedigitaltransformationandenhanceuserexperience.BlockchainisnotonlyaboutBitcoinorcryptocurrencies,butalsoaboutdifferenttechnologiessuchaspeer-to-peernetworks,consensusmechanisms,andcryptography.Thesetechnologiestogetherhelpsustaintrustlessenvironmentsinwhichdigitalvaluecanbetransferredbetweenindividualswithoutintermediaries.Thisbookwillhelpyouunderstandthebasicsofblockchainsuchasconsensusprotocols,decentralizedapplications,andtokenization.You'llfocusonhowblockchainisusedtodayindifferentindustriesandthetechnologicalchallengesfacedwhileimplementingablockchainstrategy.Thebookalsoenablesyou,asadecisionmaker,tounderstandblockchainfromatechnicalperspectiveandevaluateitsapplicabilityinyourbusiness.Finally,you'llgettogripswithblockchainframeworkssuchasHyperledgerandQuorumandtheirusability.Bytheendofthisbook,you'llhavelearnedaboutthecurrentusecasesofblockchainandbeabletoimplementablockchainstrategyonyourown.

·4.9萬字

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喚醒孩子的數學腦

這是一本針對小學生的數學思維培養讀物。本書通過講述日常生活里發生的小故事，分析隱藏在其中的數學思維，從而激發孩子對數學的興趣。告訴孩子數學在我們生活中的運用其實非常廣泛，數學的學習本質上是一種思維能力的鍛煉，生活中的方方面面都離不開數學。書中共包含了概率思維、序列思維、幾何思維、抽象思維、逆向思維以及整體與局部思維六大章節內容。每一章都選取了最能體現該數學思維的趣味故事，并有相應的歸納和總結。

·3.4萬字

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愛情數學（TED 思想的力量系列）

尋找到完美伴侶真的那么難嗎？在《愛情數學：如何用數學找到真愛？》中，數據學漢娜·弗萊博士巧妙揭示了愛情中隱藏的數學規律，展示了數學在愛情問題上的妙用，給出了告別單身、保持優質婚姻的重要秘訣！如何提高遇見Mr.Right的概率？網絡交友成功率是多少？戀愛多久后結婚才合適？與愛人發生爭執時，什么時候妥協勝算大？如何避免離婚？從評估網絡交友的最佳策略，到定義模糊的“美麗”理念，漢娜博士用趣味性十足的方式，向讀者展示了數學在幫你尋找真愛過程中的神奇作用。如果想更好地理解愛情是怎么回事，就翻開這本有趣而深刻的小書《愛情數學》吧。

·3.6萬字

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