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Geography 340

Economic Geography - Lab 6: Market Potential and Aggregate Travel Models

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Site Location Analysis Market Potential and Aggregate Travel Models

The purpose of this exercise is to introduce students to two additional measures useful for doing site location analysis. These are related to the gravity model that we have already visited. This week we will visit the Market Potential Model and the Aggregate Cost Model.  These models are location decision-making models that may be used by industrial, transportation or retail interests.  The market potential model seeks to determine the likely interaction a place may have with other places.  For example, it may be used to estimate the number of customers a business may expect.  It considers local customers and distant customers. 

The aggregate travel model seeks to measure costs associated with transportation of a good.  Such a model might be used to determine the number of trips one might have to make from a place (like a central warehouse) to all the potential customers in a district. 

The background readings are on Moodle

Below are the formulas you will use.

Market Potential Model:  Works best when businesses have the liberty of focusing on revenue maximization thanks to a monopolistic or oligopolisitic conditions.  This is very similar to the gravity model.

Market Potential Equation
Where:

Mi = Market Potential at place i
Pj= Population of place j
Dij= Distance between places i and j.

 

When a company faces competition, cost minimization becomes more important.  Under competitive conditions, the Aggregate Travel Model makes better sense. 
Travel Cost Equation

Where: Ai = Aggregate Travel at place i.
Pj= Population of place j
Dij= Distance between places i and j.

Scenario


You just landed a big contract with a major furniture retailer to direct their expansion effort into a Western Kansas.  The company wants you to locate for them a new multi-million dollar showroom facility, and a regional warehouse where deliveries to the surrounding towns will be shipped.  The territory the company is expanding into is a multi-county region.  The region is sparsely populated, but there are a few regional service towns where folks from many counties drive to do their shopping.  There are less than 115,000 people in the four county region.  Each county has a single small city that functions as the county seat and retail center for that county.  A handful of state highways serve the area, essentially connecting the county seats.  People move readily between cities and your company is the only furniture store in the region. 


Task
Using the market potential model and the aggregate travel model, calculate for the furniture retailer where to put their retail showroom facility where to put their warehouse/distribution facility.  You will direct the company to put the store in the city with the best market potential and the warehouse/distribution facility in the city with the least aggregate travel costs.  (use 1 mile for distance within a city). 

Background Reading - Find on Moodle

Download this data to perform your calculations

Download the this Microsoft Excel file if you would like to see one version of the formulas you'll need to use..

 

 

Questions

You are to provide the following data to the furntiture retailers. Don't use dollar signs or commas, just numbers or letters.

Questions and Answers Table
Question
Number
Answer Question
1 What is the Market Potential for Atwood, Kansas? 
2 What is the Market Potential for Colby, Kansas? 
3 What is the Market Potential for Great Bend, Kansas? 
4 What is the Market Potential for WaKeeney, Kansas? 
5 What is the Aggregate Travel Costs for city Bird, Kansas?
6 What is the Aggregate Travel Costs Colby, Kansas?
7 What is the Aggregate Travel Costs for Oberlin, Kansas?
8 What is the Aggregate Travel Costs for Hays, Kansas?
9 In which city should the retail facility be located?
10 In which city should the warehouse/distribution center be located?
11

You have heard a report that a factory is relocating from Colby to Great Bend.  An estimated 5000 people will move with the factory.  You may want to devise a contingency plan. If this happens where should you move the retail facility?

If no, type "no"

12

If this population shift occurs, where should the warehouse be moved? If it shouldn't, enter "no".





When you click the button below, you will be directed to a web page that shows your answers. The instructor will get a copy of this email as well, but you may want to keep a copy for your records. If you are curious about the correct answers, please bring your questions to class.

 

 

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