RF effect and space charge effect are the main sources of the emittance growth in the RF elec-tron gun.The single parti......

Using the most recent hydrologic and water quality data issued by U.S. Geological Survey, this paper deals with the pol......

Low-degree-of-freedom (Low-DOF) parallel manipulators (PMs) have drawn extensive interests, particularly in type synthes......

讨论仿射映射、闵可夫斯基加法、笛卡尔乘积和取交集等保凸算子或运算,研究它们是否仍然保持集合的接近凸性和几乎凸性.结果表明,......

定义(た)集合范畴中的一些基本概念,并研究了(た)集合范畴的格值函数空同,进一步指出了格值函数空间函子与格值积函子互为伴随.即(......