The purpose of this work is to look at how soil heterogeneity and pore water pressure impact shield inclined tunnel excavation face stability as burial depth varies. calculation model was established, the supporting maintain solved via upper bound method. results showed that coefficient had substantial effects on pressure. location failure range under varied were presented. In addition, boundar...

Three methods for computing the upper bound when linear cuts are performed on the uncertainty set are described. One of them is based on the computation of spherical , one involves the construction of an implicit system to implement the linear constraints, and the other reformulates the problem into a higher dimensional one such that the standard upper bound computation can be used. The quality...

We consider online scheduling of jobs with specic release time on m identical machines. Each job has a weight and a size; the goal is maximizing total weight of completed jobs. At release time of a job it must immediately be scheduled on a machine or it will be rejected. It is also allowed during execution of a job to preempt it; however, it will be lost and only weight of completed jobs contri...

The theory of local homology modules was initiated by Matlis in 1974. It is a dual version of the theory of local cohomology modules. Mohammadi and Divaani-Aazar (2012) studied the connection between local homology and Gorenstein flat modules by using Gorenstein flat resolutions. In this paper, we introduce generalized local homology modules for complexes and we give several ways for computing ...