The paper considers the fluctuations of ground surface during blasting operations on tunnel structures. To estimate vibration levels soil surface, under explosive action inside a cylindrical cavity, we will consider plane problem elasticity theory as first approximation. main purpose work is to determine stress-strain state pipelines influence seismic waves. As result this impact, longitudinal ...

Modern graphics hardware is designed for highly parallel numerical tasks and provides significant cost and performance benefits. Graphics hardware vendors are now making available development tools to support general purpose high performance computing. Nvidia’s CUDA platform, in particular, offers direct access to graphics hardware through a programming language similar to C. Using the CUDA pla...

Cells have structure and the ability to move, thanks in part to the actin cytoskeleton, a dynamic cellular scaffolding that facilitates many cellular processes. Actin is mostly concentrated near the outer membrane of the cell, where it is involved in such processes as the formation of membrane protrusions at the leading edges of migrating cells, the movement of certain intracellular vesicles su...

Workstations make up a very large fraction of the total available computing capacity in many organisations. In order to use this capacity optimally, dynamic allocation of computing resources is needed. The Esprit project Dynamite addresses this load balancing problem through the migration of tasks in a dynamically linked parallel program. An important goal of the project is to accomplish this i...

explosion has always been regarded as one of the most complicated engineering problems. as a result, many engineers have preferred rather simplified empirical approaches in comparison to extremely complex deterministic analyses. in this paper, however, a numerical simulation based on the combined finite/discrete element methodology is presented for analyzing the dynamic behavior of fracturing r...

The area of the tunnel face after blasting is a very important factor in underground excavations where drilling and method used. face, this significant that has affected cost safety constructions case using excavations. Because depends on many different parameters, such as geological conditions located, parameters explosion, other tunnel, it difficult to accurately determine value blasting. Thi...