In this paper, a tri-dimensional filter method for nonlinear programming was proposed. We add a parameter into the traditional filter for relaxing the criterion of iterates. The global convergent properties of the pro...In this paper, a tri-dimensional filter method for nonlinear programming was proposed. We add a parameter into the traditional filter for relaxing the criterion of iterates. The global convergent properties of the proposed algorithm are proved under some appropriate conditions.展开更多
A new type of tri-dimensionally continuous network reinforced metal-matrix composite was proposed and an effective manufacturing method was advanced. By employing the SHS reaction of Al-TiO2-C system and vacuum high p...A new type of tri-dimensionally continuous network reinforced metal-matrix composite was proposed and an effective manufacturing method was advanced. By employing the SHS reaction of Al-TiO2-C system and vacuum high pressure infiltration technique, the making of this type of metal-matrix composite has been thoroughly studied. Emphasis was placed on the展开更多
文摘In this paper, a tri-dimensional filter method for nonlinear programming was proposed. We add a parameter into the traditional filter for relaxing the criterion of iterates. The global convergent properties of the proposed algorithm are proved under some appropriate conditions.
文摘A new type of tri-dimensionally continuous network reinforced metal-matrix composite was proposed and an effective manufacturing method was advanced. By employing the SHS reaction of Al-TiO2-C system and vacuum high pressure infiltration technique, the making of this type of metal-matrix composite has been thoroughly studied. Emphasis was placed on the
文摘目的探讨三维电场导航系统(EnSite-NavX)非X线透视引导下导管射频消融术(RFCA)治疗阵发性室上性心动过速(PSVT)的可行性。方法对42例PSVT患者,在NavX系统非X线透视引导下行RFCA。结果 42例PSVT,其中房室结折返性心动过速22例、房室折返性心动过速20例(右侧旁道4例,左侧旁道15例,左、右侧双旁道1例),全部消融成功,无严重并发症发生。前8例为验证消融靶点位置行数秒X线透视,1例患者左锁骨下-奇静脉迂曲畸形,行静脉造影,1例左前隐匿性旁道非X线透视引导下消融未成功,改在透视下消融,更换合适消融导管消融成功,X线曝光时间6 m in,其余患者手术全程在非X线透视下完成。结论 NavX非透视引导下行RFCA是可行的。