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operation reac involves the use of mathematical models equations and similar other mathematical expressions assumptions are always incorporated
operation research may be regarded as a tool which is utilized to increase the effectiveness of the management decisions o r is objective
decision making is not only the headache of management rather all of us make decisions we daily decide about minor issues the essential
operations research uses the methods of science to understand and explain the phenomena of operating systems it devises the theories models
scope of the or techniques can be derived in followings various importance fields1in agriculture with the explosion of population and
uncertainly there is a great uncertainly about economic and general environment with economic growth uncertainty is also growings this makes
scattered responsibility and authority in a big industry responsibility and authority of decisions making is scattered throughout the
in a big industry the numbers of factors influencing a decision have increased situation has become big and complex because these factors
after having studied as to what is operations research we shall now try to answers why its need has been felt by the industry as already
the action phase consists of making recommendations for remedial action to those who first posed the problem and who control the operations
analysis of available information and verification of hypothesis most of the time that a scientist spends in training is devoted to learning
tentative explanations when formulated as propositions are called hypotheses it is very important to state the hypothesis and its
observation and data collection for better understanding of the problemmany times actual observations by trained observers at the scene of
determination of effectiveness measures effectiveness measure is a measure of success of a model in representing a problem and providing a
in the judgement phase due care must be given to define correctly the frame of references of the operation objectives and values whether
an operation is a combination of different actions dealing with raw materials e g men and machines which form a structure from which an action
the scientific method in o r study generally involves the followings three phases1judgment phase2research phase3action
this methods studies development from simpler forms through a long series of a small change each change by itself results in minor
case study methods it is studying the phenomenon event situation or development through a thorough and detailed analysis or intensive study the
this method involves a systematic and comprehensive study of a particular community organization group etc with a view to the analysis of a
in this method variables beings studied are controlled by the investigator in other the effect of one variable is observed while other
festinger and katz have described followings six steps in the conduct to a field studyapreliminary planning deciding scope and objectives of
methods is a tool or a techniques used to collect data it is procedure for obtaining knowledge based on empirical observation and logical
requisites of a good scientific methodsthe essentials of a good scientific methods as summed up by the advisory committee on economic and social
the scientific methods is based on certain article of path these are1reliance on evidence truth is established on the basis of evidence