简介:Basedonuser’sin-degreedistribution,traditionalrankingalgorithmsofuser’sweightusuallyneglecttheconsiderationsofthedifferencesamonguser’sfollowersandthefeaturesofuser’stweets.Inordertoanalyzethefactorswhichimpactonuser’sweight,undertheanalysisofthedatacollectedfromSINAMicroblognetwork,thispaperdiscoversthatuserinfluenceandactivedegreesarethedominantfactorsforthisissue.Theproposedalgorithmevaluatesuserinfluencebyuser’sfollowernumber,theinfluenceofuser’sfollowersandthereciprocitybetweenusers.User’sactivedegreeismodeledbyuser’sparticipationandthequalityofuser’stweets.Themodelsaretestedbydifferentdatagroupstoconfirmtheparametersforthefinalcalculation.Eventually,thispapercomparesthecomputationalresultswiththeuser’srankingordergivenbytheSINAofficialapplication.Theperformanceofthisalgorithmpresentsastrongerstabilityonthefluctuantrangeofthevalueofuser’sweight.
简介:Amonolithicclock-recoverycircuitusedin622Mb/sopticalcommunicationsystemisdesigned,whichisbasedonthephase-lockedlooptheory,,andusesbipolartransistormodel.Itovercomestheshortcomingofclockrecoverymethodbasedonfilter,andimplementsmonolithicclock-recoveryIC.Thedesignedcircuitsincludephaedetector,voltage-controlledoscillatorandloopfilter.Amongthem,thevoltage-controloscillatorisamodifiedtwo-stageringoscillator,whichprovidesquadratureclocksignalsandpresentswidevoltage-controlledrangeandhighvoltage-controllingsensitivity.
简介:Inthispaper,anewmodelbasedonanimprovedBrentKung(BK)parallelprefixnetwork(PPN)algorithmisproposedandrealizedinthefieldprogrammablegatearray(FPGA).Thismodelisemployedintheimplementationof20Gb/sdifferentialquadraturephase-shiftkeying(DQPSK)precoderin40Gb/spolarizationdivisionmultiplex(PolDM)DQPSKsystem.Inthecomputationprocess,thecomputationcomplexity(area)optimizationwithfan-outlimitedisachieved.Intheimplementation,770FPGAsliceregistersareutilized,whichsaveabout60%logicresourcescomparedwiththepreviousKoggeStone(KS)algorithm.
简介:摘要随着现代社会经济的不断发展与完善,推动着科学技术的不断发展与创新,使得在人们的正常生活中,计算机信息化技术的越发的普及。对计算机而言,计算机的众多编程语言之中,C语言是最为重要的基础部分,并且还得到了非常普遍的使用。但是在使用C语言对计算机进行有效编程时,会存在一定的运算问题,而且编程过后的语法检查和一些特征有着一定的不足,导致着整体的计算机编程效果以及效率受到一定的影响。因此,本文将以C语言的计算机编程技术为课题进行展开分析,通过对C语言的计算机编程技术出现的问题进行深入的研究,并且制定有效的解决方案。