location problem
4.A FAST CONVERGENT ALGORITHM FOR MINIMIZING sum from i=1 to n (c_i||x—α_i||) TYPE OF LOCATION PROBLEM
10.The paper theoretically explains the CBD location,level,functions and the influence to city economy construction and layout. At the same time,use for the experience of the CBD construction of Tokyo? Hong Kong,analyze the problem of CBD construction status in quo which group of city of central plains and Zhengzhou are all confronted with,and point out in the process of putting concept of scientific development into effect to construct our country what views and construction outline we should be persisted all the time.

