In this article,authors discuss management methods and strategies under the segment subcontract pattern,including customizing assigned subcontract latest awarding\|bid time lists to control construction progress,risk analyzing and eluding for special contract clauses and establishing an efficient file transmission and storage system.

Based on piecewise smooth iterative maps, the two-parameter bifurcation diagrams of the discontinuous current-programmed Buck-Boost converter s dynamical behavior are presented while both input voltage E and load resistance R vary simultaneously.