This document discusses the transportation problem in operations research. It introduces the transportation problem as determining how to distribute a single commodity from multiple sources to multiple destinations to minimize costs. Key points covered include:
- Each source has a supply capacity and each destination has a demand requirement. The goal is for total supply to equal total demand.
- Transportation costs are proportional to the quantity shipped between each origin-destination pair.
- The problem can be represented as a network with nodes for sources and destinations and arcs showing possible shipments.
- Several methods are presented for finding an initial feasible solution, including the Northwest Corner method, Least Cost method, and Vogel's Approximation method.
- An example problem
This presentation is made to represent the basic transportation model. The aim of this presentation is to implement the transportation model in solving transportation problem.
The transportation problem is a special type of linear programming problem where the objective is to minimize the cost of distributing a product from a number of sources or origins to a number of destinations.
Because of its special structure, the usual simplex method is not suitable for solving transportation problems. These problems require a special method of solution.
On The Use of Transportation Techniques to Determine the Cost of Transporting...IOSR Journals
This paper aims at identifying an effective and appropriate method of calculating the cost of transporting goods from several supply centers to several demand centers out of many available methods. Transportation algorithms of North-West corner method (NWCM), Least Cost Method (LCM), Vogel’s Approximation Method (VAM) and Optimality Test were carried out to estimate the cost of transporting produced newspaper from production center to ware-houses using Statistical software called TORA. The results revealed that: NWCM = 36,689,050.00, LCM = 55,250,034.00, VAM = 29,097,700.00 and Optimal solution = 19,566,332.00. It was discovered that Vogel’s Approximation method gives the transportation cost that closer to optimal solution. Also, the study revealed that a production center should be created at northern part of Nigeria to replace the dummy supply center used in the analysis, so as to make production capacity equal to requirement.
A New Approach to Solve Initial Basic Feasible Solution for the Transportatio...Dr. Amarjeet Singh
In transportation problem the main requirement is
to find the Initial Basic Feasible Solution for the transportation
problem. The objective of the transportation problem is to
minimize the cost. In this paper, a new algorithm (i.e.) Row
Implied Cost Method(RICM) which is proposed to find an
initial basic feasible solution for the transportation problem.
This method is illustrated with numerical examples.
This presentation is made to represent the basic transportation model. The aim of this presentation is to implement the transportation model in solving transportation problem.
The transportation problem is a special type of linear programming problem where the objective is to minimize the cost of distributing a product from a number of sources or origins to a number of destinations.
Because of its special structure, the usual simplex method is not suitable for solving transportation problems. These problems require a special method of solution.
On The Use of Transportation Techniques to Determine the Cost of Transporting...IOSR Journals
This paper aims at identifying an effective and appropriate method of calculating the cost of transporting goods from several supply centers to several demand centers out of many available methods. Transportation algorithms of North-West corner method (NWCM), Least Cost Method (LCM), Vogel’s Approximation Method (VAM) and Optimality Test were carried out to estimate the cost of transporting produced newspaper from production center to ware-houses using Statistical software called TORA. The results revealed that: NWCM = 36,689,050.00, LCM = 55,250,034.00, VAM = 29,097,700.00 and Optimal solution = 19,566,332.00. It was discovered that Vogel’s Approximation method gives the transportation cost that closer to optimal solution. Also, the study revealed that a production center should be created at northern part of Nigeria to replace the dummy supply center used in the analysis, so as to make production capacity equal to requirement.
A New Approach to Solve Initial Basic Feasible Solution for the Transportatio...Dr. Amarjeet Singh
In transportation problem the main requirement is
to find the Initial Basic Feasible Solution for the transportation
problem. The objective of the transportation problem is to
minimize the cost. In this paper, a new algorithm (i.e.) Row
Implied Cost Method(RICM) which is proposed to find an
initial basic feasible solution for the transportation problem.
This method is illustrated with numerical examples.
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2. Introduction to transportation
problem
2
▰ Transportation deals with the transportation of a commodity (single
product) from ‘m’ sources (origin or supply or capacity centers) to
‘n’ destinations (demand or requirement centers).
▰ Is a special type of LPP where the objective is to minimize the cost
of distributing a product from a number of sources or origins to a
number of destinations.
▰ The objective is to determine the amount to be shifted from each
source to each destination to minimize the total transportation cost
3. Characteristics transportation
model
▰ Each source has a certain supply (𝑠𝑖)
▰ Each destination has a certain demand (𝑑𝑗)
▰ The cost of shipping from a source to a destination is directly
proportional to the number of units shipped
▰ The model has constraints for supply at each source and
demand at each destination
▰ Total supply should equal with the total demand.
▰ Only one product is transported between routes
3
4. Network Representation
4
▰ Nodes/circles indicate sources and destinations
▰ Arc/arrow represent a routes for distributing a product from
sources to destinations.
7. Mathematical model formulation
Let 𝑐𝑖𝑗 be the cost of shipping one unit of the commodity from
source” i” to destination “j” for each route. Let 𝑥𝑖𝑗be the units
shipped per route. Then the LPP is stated below.
8. Example
A wheat supplier has contracted to provide wheat for three universities(Hawassa,
Dilla and Wachamo) The wheat can be supplied from three cities( Robe, Assela
and Adama). Given the capacity of each city and demand of each university,
determine how many Kgs of wheat to transport from each source to each
destination on a monthly basis in order to minimize the total cost of
transportation.
City Supply University Demand
1. Adama 150 A. Wachamo 200
2. Assela 175 B. Dilla 100
3. Robe 275 C. Hawassa 300
Total 600 Kgs Total 600 Kgs
Transport cost from city to university (ETB/Kg)
City A. Wachamo B. Dilla C. Hawassa
1. Adama
2. Asella
3. Robe
6
7
4
8
11
5
10
11
12