Workflow scheduling plays a vital role in advanced manufacturing, and it deserves research efforts to warrant further improvement. This paper proposes an intelligent workflow scheduling system (iWFSS) to integrate information, processes, and knowledge into a unified framework that provides a total solution to online scheduling. The iWFSS consists of an information system, a workflow system, and...

In this paper, three criteria scheduling problem of n jobs on a single machine is considered. Each these to be processed without interruption and becomes available for processing at time zero. The minimize objectives simultaneously, which are the completion time, maximum tardiness, earliness. Here, we develop fuzzy multi-objective linear programming (FMOLP) model solving in environment by using...

CPU scheduling is the basis of multi programmed operating system. The idea of multiprogramming is relatively simple, if a process (job) is waiting for an I/O request, then CPU switches from one job to another job so that CPU is always busy and computer becomes more productive. Scheduling is a fundamental operating system function, almost all computer resources are scheduled before use. The CPU ...

0360-8352/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.cie.2009.07.010 * Tel.: +886 4 24961123x1409; fax: +886 4 249611 E-mail address: [email protected] In practical project management (PM) decision problems, environmental coefficients and related parameters are frequently fuzzy in nature, and a decision maker (DM) must simultaneously consider various conflicting objectives in a ...

Flexible manufacturing system (FMS) readily addresses the dynamic needs of the customers in terms of variety and quality. At present, there is a need to produce a wide range of quality products in limited time span. On-time delivery of customers’ orders is critical in make-to-order (MTO) manufacturing systems. The completion time of the orders depends on several factors including arrival rate, ...

This paper describes a fuzzy Shifting Bottleneck Procedure hybridised with genetic algorithm for a real-world job shop scheduling problem. Fuzzy sets are used to model uncertain processing times of jobs and their release dates and due dates. In each iteration, the Shifting Bottleneck Procedure selects a machine, which is critical for the stated objective, namely minimisation of the makespan (th...

The theory of concept lattices (i.e. hierarchical structures of concepts in the sense of Port-Royal school) is approached from the point of view of fuzzy logic. The notions of partial order, lattice order, and formal concept are generalized for fuzzy setting. Presented is a theorem characterizing the hierarchical structure of formal fuzzy concepts arising in a given formal fuzzy context. Also, ...