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Iterative reengineering process is considered as an effective methodology to organize reengineering projects on degenerated but in-use legacy systems. By replacing legacy components gradually, the functionalities and requirements of legacy system can be satisfied. In practice, scheduling legacy components and data in every iterative cycle correctly is a great challenge to project managers, because...
Involved with many test platforms, engineers, measurement instruments for a long time, the expenditure of a comprehensive sea test is tremendous. Therefore, a scheduling algorithm for sea test is proposed based on hybrid genetic algorithm. Considering resource requirement and resource available, queuing theory is applied for the concurrent arrangement of test procedures after the genetic algorithm...
TDRS (Tracking and Data Relay Satellite) can be seen as a bridge between user spacecrafts and ground station. The TDRSS (Tracking and Data Relay Satellite System) single access link scheduling problem is an important application field of TDRSS. The important character of the scheduling problem lies in that there is time windows constraint between TDRS and user spacecrafts. Tasks can be completed only...
In this paper, a composite algorithm is proposed by integrating FL (described by Framinan and Leisten, OMEGA, 2003) with LW (presented by X.P. Li & C. Wu, Chinese Journal of Electronics, 2005) for large flow shop scheduling problem with total completion-time minimization, in which INSERT and SWAP (introduced by X.P. Li et al., Tsinghua Science and Technology, 2006) are adopted to reduce CPU-time...
By analyzing the self-organizing characteristic of intelligent behavior, the superiority of intelligent system based on self-organizing was compared and pointed. With application to fault diagnosis domain, the principle of intelligent diagnosis and self-organizing planning process were analyzed in detail. Combined with the specially characteristic and advantage of multi-agent technology, this paper...
For the difficulties happened in the research of logistics scheduling optimization problems and in the system design of agility scheduling DSS, and for the purpose of reducing the complexity and improving the solving efficiency of research problems, the paper proposes a basic way of agility scheduling realization on the basis of semi-hierarchical control mechanism, the paper emphasizes on one applied...
In spatial join processing, a common method to minimize the I/O cost is to partition the spatial objects into clusters, and then to schedule the processing of the clusters in the spatial join processing such that the number of times the same objects to be fetched into memory can be minimized. A key issue of this clustering-and-scheduling approach is how to produce a better sequence of clusters to...
According to QoS (quality of service) of computing resources in grid, a 2-tier hybrid algorithm is proposed for independent tasks scheduling with time-cost minimization. QGMM (QoS Guided Min-Min, presented by He Xiao Shan et al., Journal of Computer Science and Technology, 2003) is adopted in the first level to obtain a schedule with optimized completion time. A GA (genetic algorithm) only with mutation...
Resource allocation is the key technology in computational grid. How to effectively allocate and schedule the grid resources is a challenge for a grid computing system. To the grid service providers, two issues should be addressed to maximize their profits: 1) how to choose the optimal resource combination; 2) how to adjust the resource price under certain resource combination. While most of the existing...
Wireless grids bring more challenging issues of resource allocation and task scheduling, and mobility and power management are major additional concerns in a wireless grid. Based on a proxy-based architecture, a hierarchical scheduling model is proposed to efficiently utilize the energy of wireless nodes with respect to quality of service (QoS). The first level scheduler is responsible for mapping...
New paradigms for manufacturing system control are required that provide manufacturers with the adaptability and responsiveness required to compete in today's market. In this paper, an integrated process planning and scheduling system, which is applicable to the holonic manufacturing system is presented. Basic architecture of the target holonic manufacturing system is discussed from the viewpoint...
For long-term projects with considerable cash flows, the project managers aim to maximize the net present values instead of to minimize project durations. An ant colony algorithm is proposed to coordinate the allocation of scarce resources to improve the net present values. The algorithm adaptively adjusts resource allocation according to the pheromone generated by artificial ants employed to search...
Communication and coordination are main factors impacting global software design. As a result, task estimation and task scheduling should be well performed so as to reduce the impact of communication delay and promote the coordination. Accurate duration and cost estimation is critical so far, there are many variables for accurate estimate of cost or duration including the type of application and domain,...
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