在linux中实现一个命令执行程序doit，它执行命令行参数中的命令，之后统计1）命令执行占用的CPU时间(包括用户态和系统态时间，以毫秒为单位)，2）命令执行的时间，3）进程被抢占的次数，4）进程主动放弃CPU的次数，5）进程执行过程中发生缺页的次数

收到一些国内外朋友的来信，咨询关于容积卡尔曼滤波的问题(CKF)，大家比较疑惑的应该就是generator或G-orbit的概念。
考虑到工作以后，重心必然转移，不可能再像现在这样详细的回答所有人的问题，更不可能再帮大家改论文、写(或改)代码了，请各位谅解！在此，上传一个CKF和五阶CKF用于目标跟踪的示例代码，代码中包含详细的注释，希望对大家以后的学习和研究有所帮助！此代码利用C++对五阶CKF的第二G-轨迹进行了封装(Perms.exe)，能理解最好，如果无法理解，也无须深究其具体构造方法！可执行文件底层是用字符串+递归算法实现的，理论上可以应用于任意维模型。
但考虑到递归算法可能存在的栈溢出，重复压栈出栈带来的时间消耗等问题，我们利用矩阵的稀疏性和群的完全对称性，并通过分次调用，来尽可能减少栈的深度，提高计算速度。
容积点一次生成后，可以一直使用，通过对50维G-轨迹的生成速度(CoreT6600@2.2GHz)进行测试，包含数据读写在内的速度约为1.5秒，速度尚可。
而目前为止，本人尚未遇到达到甚至超过50维的系统，因此，暂时不作算法层面的优化。
注意：Perms.exe可以用于任意维模型，将可执行文件复制至工作目录下，调用时选择N/n，并输入你的模型维数，即可生成所需的第二G-轨迹。
如果无法理解相关的概念，请参考示例代码，并记住如何使用即可~~~相关理论基础及所用模型，请参考以下文献：References(youmayciteoneofthearticlesinyourpaper):[1]X.C.Zhang,C.J.Guo,"CubatureKalmanfilters:Derivationandextension,"ChinsesPhysicsB,vol.22,no.12,128401,DOI:10.1088/1674-1056/22/12/128401[2]X.C.Zhang,Y.L.Teng,"AnewderivationofthecubatureKalmanfilters,"AsianJournalofControl,DOI:10.1002/asjc.926[3]X.C.Zhang,"Cubatureinformationfiltersusinghigh-degreeandembeddedcubaturerules,"Circuits,Systems,andSignalProcessing,vol.33,no.6,pp.1799-1818,DOI:10.1007/s00034-013-9730-0

Django1.11.5,python＞3.6WhothisbookisforThisbookisforPythondeveloperswhowanttodevelopRESTfulWebServices,alsoknownasRESTfulwebAPIs,withPython3.6orgreater,andwanttolearnhowtodoitwiththemostpopularPythonwebframework—Django.

一本经典的误差分析的教材。
本书是《物理科学中的数据处理和误差分析》对应的英文版，是清晰版，电子书格式为pdf。
DOI：10.1063/1.4823194

前阶段在做关于聚类的问题研究，发了篇文章，随附matlab代码。
该程序是基于邻域网格划分实现的聚类。
版权原因，该程序内没有附带相应文章，大家可以根据代码内给定的标题和DOI号自行谷歌下载。
如果希望讨论聚类问题，欢迎根据代码内联系方式联系我，共同学习。
如果只是初级的matlab运行问题，还希望自行谷歌学习。
版权所有，建议使用代码的学者引用内附的文章出处。
未经许可或引用，不得随意传播！

原则英文版，总页数为586页，是完整的，此版本是我付费在别的网站上下载的ThankyoufordownloadingthisSimonSchusterebookGetaFreeebookwhenyoujoinourmailinglist.Plus,getupdatesonnewreleases,dealsrecommendedreads,andmorefromSimonSchusterClickbelowtosignupandseetermsandconditionsCLICKHERETOSIGNUPAlreadyasubscriber?Provideyouremailagainsowecanregisterthisebookandsendyoumoreofwhatyouliketoread.YouwillcontinuetoreceiveexclusiveoffersinyourinboxPRINCIPLESRAYDALIOsiMonSCHUSTERNEWYORKLONDONTORONTOSYDNEYNEWDELHIPARTIW豆EREIMCOMIINGFRON1MyCalltoAdventure:1949-19672CrossingtheThreshold:1967-19793MyAbyss:1979-19824MyRoadofTrials:1983-19945TheUltimateBoon:1995-20106ReturningtheBoon:2011-20157MyLastYearandMyGreatestChallenge:2016-20178LookingBackfromaHigherLevelPARTIILIFEPRINCIPLES1EmbraceRealityandDealwithIt2Usethe5-StepProcesstoGetWhatYouWantOutofLife3BeRadicallyOpen-Minded4UnderstandThatPeopleAreWiredVeryDifferently5LearnHowtoMakeDecisionsEffectivelyLifePrinciples:PuttingItAllTogetherSummaryandTableoflifePrinciplesPARTIIIWORKPRINCIPLESSummaryandTableofWorkPrinciplesTOGETTHECULTURERIGHT1TrustinRadicalTruthandRadicalTransparency2CultivateMeaningfulWorkandMeaningfulRelationships3CreateaCultureinWhichItIsOkaytoMakeMistakesandUnacceptableNottoLearnoem4GetandStayinSync5BelievabilityWeightYourDecisionMaking6RecognizeHowtoGetBeyondDisagreementsTOGETTHEPEOPLERIGHT7RememberThattheWHOIsMoreImportantthantheWhat8HireRight,BecausethePenaltiesforHiringWrongAreHuge9ConstantlyTrain,Test,Evaluate,andSortPeopleTOBUILDANDEVOLVEYOURMACHINE10ManageasSomeoneOperatingaMachinetoAchieveagoal11PerceiveandDon'tTolerateproblems12DiagnoseProblemstoGetatTheirrootcauses13DesignImprovementstoYourMachinetoGetAroundYourProblems14DoWhatYouSetOuttodo15USeToolsandProtocolstoShapeHowWorkIsDone16AndforHeaven'sSakeDontOverlookGovernanceWorkPrinciples:PuttingItAllTogetherACKNOWLEDGMENTSABOUTTHEAUTHORCONCLUSIONAPPENDIX.TOOLSANDPROTOCOLSFORBRIDGEWATERSIDEAMERITOCRACYBIBLIOGRAPHYINDEXToBarbara.thehalfmewhohasmademewholeformorethanfortyyearsINTRODUCTIONBeforeibegintellingyouwhatIthink,IwanttoestablishthatI'ma"dumbshit'whodoesntknowmuchrelativetowhatineedtoknowWhateversuccessI'vehadinlifehashadmoretodowithmyknowinghowtodealwithmynotknowingthananythingIknow.ThemostimportantthingIlearnedisanapproachtolifebasedonprinciplesthathelpsmefindoutwhat'strueandwhattodoaboutitI'mpassingalongtheseprinciplesbecauseiamnowatthestageinmylifewhichIwanttohelpothersbesuccessfulratherthantobemoresuccessfulmyself.Becausetheseprincipleshavehelpedmeandotherssomuch,Iwanttosharethemwithyou.It'suptoyoutodecidehowvaluabletheyreallyareandwhat,ifanythingyouwanttodowiththemPrinciplesarefundamentaltruthsthatserveasthefoundationsforbehaviorthatgetsyouwhatyouwantoutoflife.TheycanbeappliedagainandagaininsimilarsituationstohelpyouachieveyourgoalsEveryday,eachofusisfacedwithablizzardofsituationswemustrespondto.Withoutprincipleswewouldbeforcedtoreacttoallthethingslifethrowsatusindividually,asifwewereexperiencingeachofthemforthefirsttime.Ifinsteadweclassifythesesituationsintotypesandhavegoodprinciplesfordealingwiththemwewillmakebetterdecisionsmorequicklyandhavebetterlivesasaresult.Havingagoodsetofprinciplesislikehavingagoodcollectionofrecipesforsuccess.Allsuccessfulpeopleoperatebyrinciplesthathelpthembesuccessful,thoughwhattheychoosetobesuccessfulatvariesenormouslysotheirprinciplesvarTobeprincipledmeanstoconsistentlyoperatewithprinciplesthatcanbeclearlyexplained.Unfortunately,mostpeoplecantdothat.Andit'sveryrareforpeopletowritetheirprinciplesdownandsharethemThatisashame.IwouldlovetoknowwhatprinciplesguidedAlbertEinstein,SteveJobsWinstonChurchill,LeonardodaVinci,andotherssoIcouldclearlyunderstandwhattheyweregoingafterandhowtheyachieveditandcouldcomparetheirdifferentapproaches.I'dliketoknowwhichprinciplesaremostimportanttothepoliticianswhowantmetovoteforthemandtoalltheotherpeoplewhosedecisionsaffectme.Dowehavecommonprinciplesthatbindustogether-asafamly,asacommunity,asanation,asfriendsacrossnations?O1dowehaveopposingprinciplesthatdivideus?whatarethey?letsbespecificThisisatimewhenitisespeciallyimportantforustobeclearaboutourprinciplesMyhopeisthatreadingthisbookwillpromptyouandotherstodiscoveryourownprinciplesfromwhereveryouthinkisbestandideallywritetheedown.Doingthatwillallowyouandotherstobeclearaboutwhatyourprinciplesareandunderstandeachotherbetter.Itwillallowyoutoretinethemasyouencountermoreexperiencesandtoreflectonthem,whichwillhelpyoumakebetterdecisionsandbebetterunderstoodHAVINGYOUROWNPRINCIPLESWecomebyourprinciplesindifferentways.Sometimeswegainthemthroughourownexperiencesandreflections.Sometimesweacceptthemfromothers,likeourparents,orweadoptholisticpackagesofprinciples,suchasthoseofreligionsandlegalframeworksBecauseweeachhaveourowngoalsandourownnatures,eachofusmustchooseourownprinciplestomatchthem.Whileitisntnecessarilyabadthingtouseothers'principles,adoptingprincipleswithoutgivingthemmuchthoughtcanexposeyoutotheriskofactinginwaysinconsistentwithyourgoalsandyournature.Atthesametime,you,likeme,probablydontknoweverythingyouneedtoknowandwouldbewisetoembracethatfact.Ifyoucanthinkforyourselfwhilebeingopen-mindedinaclearheadedwaytofindoutwhatisbestforyoutodo,andifyoucansummonupthecouragetodoityouwillmakethemostofyourlife.Ifyoucantdothat,youshouldreflectonwhythatis,becausethat'smostlikelyyourgreatestimpedimenttogettingmoreofwhatyouwantoutoflifeThatbringsmetomyfirstprincipleThinkforyourselftodecide1,whatyouwant,2ywhatistrue,and3,whatyoushoulddotoachieve#1inlightof#2anddothatwithhumilityandopen-mindednesssothatyouconsiderthebestthinkingavailabletoyou.Beingclearonyourprinciplesisimportantbecausetheywillaffectallaspectsofyourlife,manytimesaday.Forexample,whenyouenterintorelationshipswithothers,yourprinciplesandtheirprincipleswilldeterminehowyouinteract.Peoplewhohavesharedvaluesandprinciplesgetlong.Peoplewhodontwillsufferthroughconstantmisunderstandingsandconflicts.Thinkaboutthepeopleyouareclosestto:Aretheirvaluesalignedwithyours?Doyouevenknowwhattheirvaluesorprinciplesare?Tooofteninrelationships,people'sprinciplesarentclear.ThisisespeciallyproblematicinorganizationswherepeopleneedtohavesharedprinciplestobesuccessfulBeingcrystalclearaboutmyprinciplesiswhyIlaboredsomuchovereverysentenceinthisbookTheprinciplesyouchoosecanbeanythingyouwantthemtobeaslongastheyareauthentic--i.e,aslongastheyreflectyourtruecharacterandvalues

Inthismanualaredescriptionsforcopyrightedproductswhicharenotexplicitlyindicatedassuch.Theabsenceofthetrademark®andcopyright©symbolsdoesnotinferthataproductisnotprotected.Additionally,registeredpatentsandtrademarksaresimilarlynotexpresslyindicatedinthismanualTheinformationinthisdocumenthasbeencarefullycheckedandisbelievedtobeentirelyreliable.However,SYSTECelectronicGmbHassumesnoresponsibilityforanyinaccuracies.SYSTECelectronicGmbHneithergivesanyguaranteenoracceptsanyliabilitywhatsoeverforconsequentialdamagesresultingfromtheuseofthismanualoritsassociatedproduct.SYSTECelectronicGmbHreservestherighttoaltertheinformationcontainedhereinwithoutpriornotificationandacceptsnoresponsibilityforanydamageswhichmightresult.Additionally,SYSTECelectronicGmbHoffersnoguaranteenoracceptsanyliabilityfordamagesarisingfromtheimproperusageorimproperinstallationofthehardwareorsoftware.SYSTECelectronicGmbHfurtherreservestherighttoalterthelayoutand/ordesignofthehardwarewithoutpriornotificationandacceptsnoliabilityfordoingso.Copyright2006SYSTECelectronicGmbH,D-07973Greiz/Thueringen.Rights-includingthoseoftranslation,reprint,broadcast,photomechanicalorsimilarreproductionandstorageorprocessingincomputersystems,inwholeorinpart-arereserved.NoreproductionmayoccurwithouttheexpresswrittenconsentfromSYSTECelectronicGmbH.

本系统旨在基于移动设备WIFI环境下解决学生签到，教师查询考勤记录，发布公告等问题。
本课题研究成果如下：（1）通过调查研究发现便捷，低成本的移动设备主要趋向于安卓智能设备。
尽管AppleiPhone系列吸引了广大用的眼球，但是Google安卓系统的智能手机却一直是国内市场的“主力军”。
【1】【通信信息报/2012年/4月/18日/第B04版玩转终端安卓独占中国市场七成份额中低端手机加速规模扩张】同时Apple手机成本相对较高，在普通高校学生使用率较低。
本系统采用开发安卓的客户端简单APP应用调用安卓设备的底层硬件功能，安卓APP通过HTTP协议、WebServices与服务器ASP.NET网站数据资源进行交互。
（2）安卓移动设备在连接上WIFI时可以通过安卓系统WIFIManager类管理WIFI状态，获得设备的物理地址，通过这一物理地址作为与学生学号绑定的条件，解决学生代签漏签问题。
（3）开发出教师使用端，主要功能是释放WIFI信号，发布公告，查询学生的签到情况等功能。
WIFI热点释放功能依赖于Java反射机制，逆向解析并调用WIFIManager类中的方法去实现热点的打开、关闭和状态管理。
【2使用Java反射机制逆向分析类方法之间的关系DOI：10.16184/j.cnki.comprg.2016.19.006分类号：TP312.2】（4）开发web服务端实现管理员对教师、课程、专业、及学生等基本信息的管理功能。

7个经典的无线传感网（WSN）节点定位算法的matlab代码，算法包括:RSSI,Centroid,APIT,DV-hop,Amorphous,BoundingBox,GridScan,MDS-MAP，另外还包括：A.场景布置,可设置:1.节点分布区域:正方形C型;2.节点分布方式:随机规则(可设置规则分布的布置误差);3.锚节点比例;4.GPS误差;B.可选择通信模型:1.规则的通信模型(通信区域是一个标准的圆形);2.DOIModel;3.LogarithmicAttenuationModel;可研究算法在不规则通信模型下的性能;C.附3个画图脚本：节点分布图，节点邻居关系图（拓扑图），节点定位误差图

这是基于android的网络视频播放器的设计与实现的毕业论文。

在日常工作中，钉钉打卡成了我生活中不可或缺的一部分。然而，有时候这个看似简单的任务却给我带来了不少烦恼。 每天早晚，我总是得牢记打开钉钉应用，点击"工作台"，再找到"考勤打卡"进行签到。有时候因为工作忙碌，会忘记打卡，导致考勤异常，影响当月的工作评价。而且，由于我使用的是苹果手机，有时候系统更新后，钉钉的某些功能会出现异常，使得打卡变得更加麻烦。 另外，我的家人使用的是安卓手机，他们也经常抱怨钉钉打卡的繁琐。尤其是对于那些不太熟悉手机操作的长辈来说，每次打卡都是一次挑战。他们总是担心自己会操作失误，导致打卡失败。 为了解决这些烦恼，我开始思考是否可以通过编写一个全自动化脚本来实现钉钉打卡。经过一段时间的摸索和学习，我终于成功编写出了一个适用于苹果和安卓系统的钉钉打卡脚本。