OPERATIONS RESEARCH

Şeyma URCAN

Industrial Engineering Department

Dokuz Eylul University

What Is The Operations Research?

Operational research,also known as operations research,is an interdisciplinary mathematical science that focuses on the effective use of technology by organizations.

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Operations Research;

In IndustryBusinessGovernmentDefense fields

PeopleMachineMaterialMoney

management

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The aim is to help

determine the management

policy and actions

scientifically.

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Operation research is the application of advanced

analytical methods to help make better decisions.

This situation provides;

More complete dataConsideration of all available

optionsCareful predictions of

outcomes and estimates of risk

The latest decision tools and techniques

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OR is closely related to industrial engineering. Industrial engineers have an

engineering point of view and use techniques of operations research as the

main tool.

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The human factor is vital for operations research.

Optimization is a word that comes to mind first in operations research.

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OPTIMIZATION=TO OBTAIN THE BEST

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System Analysis

Decision Analysis

Linear Programming

Inventory Theory

Optimization

Topics of Operations Research

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PROPERTIES OF OPERATIONS RESEARCH

Interdisciplinary Approach

Integrated Approach

Scientific Management

Interdisciplinary Approach

o Operations research is an interdisciplinary approach.

Such as; Physics Chemistry Statistics

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So to take advantage of modeling and

solving problems from different

perspectives, the problem must be explored by an

interdisciplinary team.

Integrated Approach(System Approach)

o Operation research takes into account all elements of a problem that belong to organization, environment, and interaction between them.

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So all elements of the system and all kinds of interaction

between these elements should be examined together.

Scientific Management

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Identification of the problem(formulation)

The establishment of the model

To obtain solution from model

Testing of the model and the solution

Implementation of the solution

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These issues;

I. Defining goalsII. Determination of the system which will

impact the problemIII. Determination of the constraints which

will affect solution of problemIV. Determination of the assumptionsV. Determination of an appropriate measure

of effectiveness

Identification Of The Problem

“Right solution” can not be obtained from the “wrong problem

The first and most important stage of the work is defining the problem well.

This phase helps examine the problem at hand quantitatively.

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While modeling a specific problem, various symbols are used.

It is an isolated approach.

The Establishment Of The Model

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Iconic (imitation) Model

Analog (linear) Model

Mathematical (symbolic) Model

Obtaining Model Solution

This phase obtains an optimal solution for the model by using various techniques.

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Testing Of The Model Solution

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Before the application of the model solution, the validity of model and reliability of the solution should be tested.

Validity of the model can be decided by comparing its outputs with the results of past.

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If past behavior is repeated when provided similar inputs (a stable solution is being obtained), the model will be valid.

Implementation Of The Solution

Implementation of the solution obtained from a validated model is a reliable solution to the the real-life problems.

Implementation of the solution is the duty of operation research team.

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What Are The Areas Of Practices Of ‘OR’?

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What are the decision

alternatives?

Which restrictions will be

decided under?

What is the appropriate objective criteria used to

evaluate the alternatives?

Operation research ensures the effective working of organizations by providing solutions to their various problems.

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• Operation research is a comprehensive and scientific feedback gathering method. This method should be applied on a continuous basis.

Techniques Of Operations Research

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SOCIETIES Operational

Research Society,Turkey

The International Federation of Operational

Research Societies(IFORS)

The Association of European

Operational Research

Societies(EURO)

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THANKS FOR YOUR

PATİENCE