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We study a generalization of the quadratic assignment problem (QAP) by allowing multiple equipments to be assigned at a single location as long as resources at the location permit. This problem arises in many real world applications such as facility location problem and logistics network design. We call the problem as the generalized quadratic assignment(More)
A simplified 3D gaze tracking technology with stereo vision has been developed in this paper. A pair of stereo cameras and two point light sources are used to estimate 3D gaze of user's eye. Compared with other 3D systems, there are two improvements to simplify the whole system in this paper: First, 3D gaze is estimated as the line linking 3D cornea center(More)
We consider an integrated multi-round combinatorial auction mechanism for truckload transportation procurement. Shippers allow bids on packages of lanes and solve a winner determination problem to assign lanes to carriers. Carriers employ optimization models to discover profitable lanes to bid for at a round. Price information derived from the result of a(More)
Though a lot of research has been done on fault tolerance for MPI applications, process migration has not gained widespread use because the complexity of the requirement that the knowledge about the location of a migrated process has to be made known to every other process in the MPI application. In this paper, we present a novel and effective process(More)
This paper analyzes the factors affecting the response time of I/O in VCPU with CPU-intensive workload based on Credit scheduler, and presents a new dynamic time slice mechanism in Credit Scheduler of Xen VMM. This scheduler can improve the I/O response time of VCPU having intensive I/O and CPU workloads. Especially when the workload of PCPU becomes heavy,(More)
Digital image mosaic is an active area of research. Generally, the significances of this synthetic panorama can be explained as follows: Firstly, increasing the angle of the optics system view. Secondly, the panorama can be used for image examining, editing, analysis and understanding. Thirdly, the virtual reality system can use the panorama to appear the(More)
With the development of multi-processor system, parallel program becomes a very important direction of software development. But in virtual machine systems, the performance of concurrent program scheduling is poor. In order to improve the performance of scheduling parallel applications in Virtual Machine (VM), this paper raises a parallel schedule algorism(More)