简介:设g1.g2为正规函数.对所有的0〈p.q〈∞,我们得到了Bergma型空间的加权Cesaro算子Tψ:Ag1^p→Ag2^q为有界算子和紧算子的充要条件.
简介:自然通风横流式冷却塔是一种适用于大容量机组的冷却塔形式。本文按火力发电厂1000MW机组循环水系统的冷却负荷,对自然通风横流式冷却塔的塔型进行技术经济研究和分析,给出了1000MW机组自然通风横流式冷却塔塔型趋势和填料优化布置推荐方案,可供1000MW机组火电厂自然通风横流塔借鉴与参考。
简介:Intheanalysisoneconomicgrowthfactors,calculatingthecontributionrateofinfluencingfactortoeconomicgrowthusingtheCESproductionfunctionmodelisacommonandimportantresearchfield.TheCESproductionfunctionmodelhasavarietyofforms,andthesuperpositionCESproductionfunctionmodelproposedinthepaperisanewmodel.Withregardtothemodel’sparameterestimation,thepaperproposesamodifiedparticleswarmoptimizationwhichhasafastconvergencerateandahighprecision.Withregardtothecalculationoffactorcontributionrate,thepaperoffersanewscientificcalculationmethodwiththesuperpositionCESproductionfunctionmodel.Atlast,thepapermakesanempiricalanalysisonthecontributionrateofChineseeconomicgrowthfactorsandtheresultobtainedconsistswiththereality.