This paper proposes a new multi-objective based adaptive immune algorithm for solving the combined economic and environmental dispatch problem. Economic dispatch problem deals with the minimization of fuel cost while satisfying a set of equality and inequality constraints. The fossil fuel plants pollute the environment by emitting some toxic gases. Therefore, the traditional minimization of cos...

Items arrive at a processing plant at a Folsson rate X . At time T , all Items are dispatched from the system. An Intermediate dispatch time Is to be chosen to minimize the total wait of all Items. It Is shown that If the dispatch time must be chosen at time 0 then T/2 not only minimizes the expected total wait but it also maximizes the probability that the total wait is less than a for every a...

Dynamic Object-Oriented languages allows for dynamic deenition of new classes, new generic functions and new methods. This paper proposes a single and compact data structure to, at the same time, facilitate the addition of new classes, generic functions or methods, and still ensure a fast method selection. Within a dynamic Object-Oriented language, new classes, new generic functions and new met...

Method look-up for dynamically typed object-oriented languages, such as SMALLTALK-80 or OBJECTIVE-C, is usually implemented by a cached inheritance search. Unfortunately, this technique is slow. A selector-indexed dispatch table implementation speeds up messages to within 10% of the speed of a statically typed language such as C++. We present a fast technique for generating compact selector-ind...

Smalltalk-80 is a pure object-oriented language in which messages are dispatched according to the class of the receiver, or first argument, of a message. Object-oriented languages that support multimethods dispatch messages using all their arguments. While Smalltalk does not support multimethods, Smalltalk's reflective facilities allow programmers to efficiently add them to the language. This p...

BACKGROUND The number of ambulance call-outs in Norway is increasing owing to societal changes and increased demand from the public. Together with improved but more expensive education of ambulance staff, this leads to increased costs and staffing shortages. We wanted to study whether the current dispatch triage tools could reliably identify patients who only required transport, and not pre-hos...

We address the problem of dispatching a vehicle with different product classes. There is a common dispatch cost, but holding costs that vary by product class. The problem exhibits multidimensional state, outcome and action spaces, and as a result is computationally intractable using either discrete dynamic programming methods, or even as a deterministic integer program. We prove a key structura...

This paper presents an algorithm for solving optimal power flow problem through the application of Differential Evolution (DE). Economic Dispatch is the process of allocating the required load demand between the available generation units such that the cost of operation is minimized. There have been many algorithms proposed for economic dispatch out of which a Differential Evolution (DE) is dis...

BACKGROUND Rapid and precise dispatch of resources is a key element in pre-hospital emergency medicine. Emergency medical communication centres (EMCCs) dispatch resources based on protocols and guidelines, balancing the acute need of the individual and the resource allocation of the pre-hospital emergency medical system. The aim of this study was to determine the validity of stroke identificati...