Calculations of Locating Errors in Process Digitaliaztion System
wang jiao; wang xiu-lun; yang zhi-gang(l.dept; of electrical information engineering. dalian institute; dalian 116028. china; 2.dept. of mechanical engineering; dalian railway institute; dalian 116028; china)
The Weak Unit Element of Rings
xu zhi-min(dept. of basic science & engineering; dalian railway institute; dalian 116028; china)
..............page:25-26
Some Characterization of Category of Lattices and its Morphisms
liu yong; zhang xiu-li(l.dept. of basic science & engineering. dalian railway institute. dalian 116028; china; 2.mathmatic team of dalian no.2 advanced middle school; dalian 116028. china)
..............page:20-22
Regularity Properties of Multi-Derivative One Step Method
zhang chun-rui; zheng bao-dong; qu zhi-lin(l.dept. of mathematics; harbin institute of technology; harbin 150001; china; 2.dept. of mathematics; northeast forestry university; harbin 150040; china)