In recent years, Genetic Algorithm (GA) has grown rapidly and extensively used in various fields. GA is a search method based on the paradigm of natural selection and natural genetics. With their special characteristics: a coding of parameter set, searching from a population, appropriate measure of fitness, and probabilistic transition rules, GA can perform evolving a solution for several types...

Adoption of new technology requires diversion of human and physical resources from direct production activities to learning/adjusting activities, which could reduce productivity temporarily. Focusing on the existence of such “learning cost”, we derive a simple model on the optimal timing for technology upgrading. This model suggests that, other things being equal, a firm perceived to have bette...

University of Florida Technical Report 91-29 Abstract Graphs with delays associated with their edges are often used to model communication and signal flow networks. Network performance can be improved by upgrading the network vertices. Such an improvement reduces the edge delays and comes at a cost. We study different formulations of this network performance improvement problem and show that th...