In the current global market, traditional hierarchical approaches for manufacturing scheduling and control don’t produce the desired results. It occurs especially in Job-Shop manufacturing configurations. In order to overcome the limitations that hierarchical and centralized architectures show in new manufacturing systems, many decentralized schemes have been proposed. Most of those proposals a...

Real-time systems often spend an inordinate amount of time getting ready to do things in the future and deciding what to do next. Designating a task to be performed at some time in the future, or scheduling, and nding the next task to be run, or dispatching, typically take a total time which is linear in the number of waiting tasks. A new algorithm is presented in which the time for both schedu...

The data describing resolutions to telephone network local loop \troubles," from which we wish to learn rules for dispatching technicians , are notoriously unreliable. Anecdotes abound detailing reasons why a resolution entered by a technician would not be valid, ranging from sympathy to fear to ignorance to negligence to management pressure. In this paper, we describe four different approaches...

This paper presents a heterarchical scheduling approach for exible manufacturing systems. The approach adopts a multiagent cooperative problem solving paradigm by using a bidding mechanism based on the contract net protocol to generate the production plan and schedule. Overall, scheduling is implemented using a Production Reservation approach. A typical job shop testbed demonstrates the eeectiv...

This paper considers the problem of vehicle dispatching at port container terminals in a dynamic environment. The problem deals with the assignment of delivery orders of containers to vehicles while taking into consideration the uncertainty in the travel times of the vehicles. Thus, a real-time vehicle dispatching algorithm is proposed for adaptation to the dynamic changes in the states of the ...

1 Introduction On the Dispatching Problem Federico Di Miele Giorgio Gallo October 18, 2000 Most often, space is the scarce resource in Bus Depots located in congested urban areas: vehicles arriving at the end of their trips are packed together in a rather small space. That implies that, when a vehicle has to leave to start a new trip, most often, other vehicles have to be moved to clear the way...

The SC project arose out of the recognition that the Symbolic Computation and Satisfiability Checking communities mutually benefit from the sharing of results and techniques. An SMT solver can profit from the inclusion of computer algebra techniques in its theory solver, while a computer algebra system can profit from dispatching SAT or SMT queries which arise as sub-problems during computation...

Server responsiveness and scalability are more important than ever in today’s client/server dominated network environments. Recently, researchers have begun to consider cluster-based computers using commodity hardware as an alternative to expensive specialized hardware for building scalable Web servers. In this paper, we present performance results comparing two cluster-based Web servers based ...

Vehicle dispatching consists of allocating real-time service requests to a fleet of moving vehicles. In this paper, each vehicle is associated with a vector of attribute values that describes its current situation with respect to new incoming service requests. Using this attribute description, a utility function aimed at approximating the decision process of a professional dispatcher is constru...

In power plants, stacks are usually not instrumented to measure NOx emissions on a regular basis. Thus, the available emission data is always very limited, and often uncertain and imprecise. This makes the modeling for emission reduction by statistical methods extremely difficult. In this work, a novel fuzzy m.odeling methodology is developed to generate a reliable emission model with only limi...