# OR Methods and Models

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## The Simplex Method

One of the most important classic academic papers in OR is “The Simplex Method” by George Dantzig (1947). This paper introduced the simplex method, which is a popular algorithm for solving linear programming problems. The simplex method is a simple and efficient way to solve linear programming problems, and it is still widely used today.

## Linear Programming and The Transportation Problem

“Linear Programming” by George Dantzig (1947): This paper introduced the concept of linear programming, which is a mathematical technique for optimizing an objective function subject to a set of linear constraints.

An important classic academic paper in OR is “The Transportation Problem” by Ford and Fulkerson (1956). This paper introduced the Ford-Fulkerson algorithm, which is a popular algorithm for solving the transportation problem. The transportation problem is a special case of linear programming that is used to find the most efficient way to transport goods from one location to another.

## The Critical Path Method

The critical path method (CPM) is a popular technique for scheduling projects. It was introduced in the paper “The Critical Path Method” by Morgan R. Walker and James E. Kelley, Jr. (1957). The CPM is a graphical method for identifying the critical path of a project, which is the sequence of activities that must be completed on time in order to complete the project on time.

## Queueing Theory

Queueing theory is a mathematical study of waiting lines. It was introduced in the paper “Queueing Theory” by Agner Krarup Erlang (1909). Queueing theory is used to analyze the performance of queuing…

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