Uei-Ren Chen

Learn More
The coverage problem for targets with directional sensor nodes has been studied in this paper. To improve the coverage rate for targets, we propose a Weighted Centralized Greedy Algorithm (WCGA). The weight function added in the WCGA could be adjusted according to different density of sensor nodes in directional sensor networks. A serious of experiments(More)
Traditionally, the assignment problem between tasks and processors is worked out by scheduling methods. In this paper, we have an innovative idea to construct a problem-solving environment for computational grids. To bridge the gap between the parallel processing technology and the heterogeneous computing environment, the grid computing resources are(More)
This paper proposes a statistical method to approximate the distributions of computational and communicational abilities of resources on computational grids. The well-known gamma and normal distributions are employed to approximate the distribution of computational ability and communicational ability for those computational resources. The result of the(More)
Many traditional parallel matrix computing algorithms are performed on regular resource topologies, such as mesh. However, the grid resource topology is often irregular in practice. In this paper, we present a transformation algorithm of grid resource topology for achieving virtual meshes. And on the virtual mesh, these traditional parallel algorithms can(More)
  • 1