Theroots of Operations Research (OR) are as old as science itself. The science of OR came into existence in connection with the war operations, to decide the strategy by which the enemy could be harmed to the maximum possible extent with the help of the available warfare. It was in 1885 that Frederick W. Taylor first emphasized the application of scientific analysis to methods of production. He conducted an experiment with a shovel trying to find out the weight load of ore moved by the shovel that would result to a maximum ore moved with minimum fatigue. The experiment yielded optimum weight load which provided maximum ore movement. Productivity rose substantially after this change. Other early researchers that improved scientific management are Henry Gantt with the job-scheduling improvement, A. K Erlang with his work on telephone traffic decongestion in 1917, and so many others. The field of OR continued to grow with industrial revolutions. Today, the impact of OR can be felt in so many areas. Of late, OR activities have spread to diverse fields such as hospitals, libraries, city planning, transportation systems, crime investigation, energy conservation, environmental pollution, etc.

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