The paper presents the analysis and computer simulation for the stress-strain relation and the relaxation region of the tunnel working face beneath the aircraft taxiway of Beijing Capital International Airport,in which 148m-long box culvert was jacked with the pipe roof support,and discusses the construction site monitoring and the safety control of the excavation of tunnel working face.

So the relaxation region of consequent rock slope is greatly concerned.

Slope instability is related to the relaxation region caused by slope cutting.

Objective: To explore plastic approach to periorbital chalasis of the middle and old-aged ,using a procedure for orbital region rejuvenation can result in a younger appearance of the orbital region.

The changes of stress T11 acting on residual oil film in different relaxation times,different micro pores width were also studied contrastively,the flooding effect between water and polym.

It indicates that the more the molar mass of polymer solution and the higher the mass concentration, the greater the loss modulus and storage modulus of solution, the longer the relaxation time at dynamics experiment curves, the first normal force difference of polymer solution increases with the increase in shear rate at steady experiment curves.

The relaxation time was obtained by matching the experimental data.

Data grid service reliability analysis based on production & consumption model and slack time

In this paper, a flexible capacity reservation mechanism is proposed, in which slack time is added into the reservation scenario to get more flexibility of resource reservation.

The problems in the presented algorithms of hardware/software partitioning are analyzed and a new hardware/software partitioning algorithm is presented, based on the combination of the constraint-driven and elimination of slack time.