简介:Thepurposeofthispaperistoinvestigatesomesufficientandnecessaryconditionsforthree-stepIshikawaiterativesequenceswitherrortermsforuniformlyquasi-Lipschitzianmappingstoconvergetofixedpoints.OurresultsextendandimprovetherecentonesannouncedbyLiu[3,4],XuandNoor[5],andmanyothers.
简介:我们开发领带指数的恰当的方法的三步的明确、含蓄的计划。我们使用三步的明确的指数的适合计划预言近似,然后使用三步的含蓄的指数的适合计划改正这预言。这联合被称为指数的恰当的方法的三步的预言者修正者。指数的恰当的方法的三步的预言者修正者被使用数字地与改变系数计算联合非线性的Schroedinger方程和非线性的Schroedinger方程。数字结果证明计划是高度精确的。
简介:Inthisletter,animprovedthree-stepsearchalgorithmispresented,whichusesbothgrayandchromaticinformationtoboosttheperformancewithrandomoptimizationandconvergethemotionvectorstoglobaloptima.ExperimentalresultsshowthatthisalgorithmcanefficientlyimprovethePSNRaftermotioncompensation.
简介:Anewmethodofsuper-resolutionimagereconstructionisproposed,whichusesathree-step-trainingerrorbackpropagationneuralnetwork(BPNN)torealizethesuper-resolutionreconstruction(SRR)ofsatelliteimage.ThemethodisbasedonBPNN.First,threegroupslearningsampleswithdifferentresolutionsareobtainedaccordingtoimageobservationmodel,andthenvectormappingsarerespectivelyusedtothosethreegrouplearningsamplestospeeduptheconvergenceofBPNN,atlast,threetimesconsecutivetrainingarecarriedontheBPNN.Trainingsamplesusedineachstepareofhigherresolutionthanthoseusedintheprevioussteps,sotheincreasingweightsstoreagreatamountofinformationforSRR,andnetworkperformanceandgeneralizationabilityareimprovedgreatly.Simulationandgeneralizationtestsarecarriedonthewell-trainedthree-step-trainingNNrespectively,andthereconstructionresultswithhigherresolutionimagesverifytheeffectivenessandvalidityofthismethod.
简介:由大熊辉雄教授编写的《脑电图判读stepbystep》(第4版)中文翻译版已于2009年1月在科学出版社出版。其《入门篇》有14章、124节,详细地介绍了脑电图的基本要素、记录方法、伪差的辨认、诱发试验的方法及注意事项、成人及小儿觉醒时正常及异常脑电图、正常及异常睡眠脑电图、老年人的脑电图等阅读方法;《病例篇》共12章,详细介绍了癫痼、意识障碍及睡眠觉醒障碍、脑肿瘤、脑血管病、脑炎性疾病、颅脑创伤、其他慢性脑器质性疾病、内分泌和代谢障碍性疾病和服药时的脑电图阅读方法。该书内容丰富,系统性强,图文并茂,导联标注清楚,易读易懂,使读者能在较短时间内掌握脑电图的基本原理、操作技术和诊断方法,并了解脑电图领域的最新进展。其脑电图均为等比例,可供神经内科、神经外科、精神科、小儿科医师,脑电图工作人员阅读,也可作为临床其他科室医师、进修实习人员及大专院校学生的参考书。
简介:Introduction"I…am…a…stu…de…nt…of…Eng…li…sh."ThisisthewaymystudentsreadsilentlyinEnglishanditisonlyoneoftheproblemstheyhave.Theyareconfusingreadingaloudandsilentreading.ItwillbedifficultforthemtouseEnglishefficientlyaftergraduationunlesstheycanreadindifferentways.Thisarticleaimstopresentsomesuggestionsfordiscussionaboutteachingreading.Thearticlewillbepresentedinthreesections:firstly,thestudents’difficultiesinreading;secondly,thepresentteachingworkincolleges;thirdly,somepossiblesuggestionsforimprovement.Thethirdsectionisdividedintofoursteps,eachfocusingonadifferenttechnique.