简介：随着计算机网络教学的不断发展,网上考试系统将是考试方式改革的重要方向.本文设计了一套适合本校信息工程系教学工作的网上考试系统.该系统采用J2EE和AJAX相结合的技术,适合于任何Web方式下的考试.

简介：AnewmethodtotheproblemoffairingplanarcubicB-splinecurvesisintroducedinthispaper.Themethodisbasedonweightedprogressiveiterativeapproximation(WPIAforshort)andconsistsoffollowingsteps:findingthebadpointwhichneedstofair,deletingthebadpoint,re-insertinganewdatapointtokeepthestructureofthecurveandapplyingWPIAmethodwiththenewsetofthedatapointstoobtainthefairedcurve.Thenewsetofthedatapointsisformedbytherestoftheoriginaldatapointsandthenewinsertedpoint.Themethodcanbeusedforshapedesignanddataprocessing.Numericalexamplesareprovidedtodemonstratetheeffectivenessofthemethod.