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EBBD and the Bullwhip Effect

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Virtual Word Background: Excellent Beverage & Beer Distributors
To: You
From: Danny Wilco <dwilco@ebbd.com>
Subject: Ordering product for EBBD from the Kentucky Hooch and Beer Company
I thought it important to give you some important information regarding the ordering process with which you'll be working. First, there are about 20 retailers to which we are currently distributing the Kentucky Swamp Brew. They send in their orders on Monday, which we aggregate into a total order amount. On Tuesday, we send in our orders to KHBC. Of course, KHBC processes these orders into its order queue and determines what to ship to us. I assume the amount that KHBC ships is based on some decision formula they have for the orders from all of their distributors and how much of the product they have available to ship any particular week. That said, we usually get our shipments from KHBC on Wednesdays - I think they actually start the shipment on Fridays or Mondays and it takes a few days to get to us. When received, we unload the beer into our warehouse, create the delivery lists for each of our customers, load the product on our trucks, and deliver our retail customers' order on either Thursday or Friday.
We want our customers to get their beer so they are stocked up for the weekend. After all, they can't sell what they don't have!
One other thing: I don't know whether it's true or not, but we've heard that KHBC may have a capacity problem - i.e., the company can't seem to produce enough beer. KHBC is becoming more popular, especially in this region - they cater to the college crowd and 20 to 30 year old group. I just wanted to pass this on to you.
Let me know if you have any questions.
~DW, VP LogOps.
Learning Wizard
Beer Distribution is big business in the US and worldwide. Brewers need to get their brews to the people who want to drink it. Carry-outs, grocery stores, bars, and pubs all provide the product in bottles, cans, and kegs at the retail level. But it is the distributor who handles it between the brewer and the consumer. Read here about the beer distribution system in the US.
What is a beer distributor? (2006). National Beer Wholesalers Association. Retrieved from http://nbwa.org/about/what-is-a-beer-distributor
System Dynamics
The movement of material is the most fundamental aspect of logistics. And this creates inventory, which is the accumulation of material in batches or in queues. This inventory has a cost associated with it, both from the cost of the material to cost of holding it as inventory. There are also costs of moving the material as well as processing it if that is part of the operations as in manufacturing.
This fundamental aspect of logistics, inventory, can be modeled using system dynamics concepts. So first, you should become familiar with the basic concepts of system dynamics: flows (and rates of flow), and levels.
This is Ch. 2, A Modeling Approach, from Arizona State University's (ASU) System Dynamics Methods: A Quick Introduction page, which is part of its System Dynamics Resources. This chapter explains the concepts of stocks and flows. Chapter 1 gives you an overview of system dynamics cause and effect modeling using Causal Loop diagrams. But Ch. 2 is the basic fundamentals of systems. Please feel free to read deeper into any of these resources.
Kirkwood, C. (1998). A modeling approach (Ch. 2). In System Dynamics Methods: A Quick Introduction. Retrieved from http://www.public.asu.edu/~kirkwood/sysdyn/SDIntro/ch-2.pdf
The Bull Whip Effect
The Bullwhip Effect occurs when the demand order variability in the supply chain is amplified as they moved up the supply chain. Distorted information from one end of a supply chain to the other can lead to tremendous inefficiencies. This is a classic article about this phenomenon.
Padmanabhan, H.L.L., & Whang, S. (1997). The bullwhip effect in supply chains. Sloan Management Review, 38(3).
Background Exercise: Run the EBBD simulation and become familiar with the Basic Scenario and the Basic Bull Whip Scenario. Go the simulation at http://forio.com/simulate/jelson/excellentbeerdistrib
Read the information on Page 1, then go to Page 2. Choose the Base Scenario. The click on the Advance button. The sim advances one week and then a Run Sim button appears. Click the Run Sim button to run the simulation for the remaining 23 weeks. You will see the results in the Table. If you choose the Weekly Orders Graph Tab, you will see a graph of the EBBD Weekly Orders.
INTRODUCTION AND HOW TO DO SIMULATIONS & CASE 1: - WATCH THESE VIDEOS IN YOUTUBE
There are two videos in YouTube to help introduce you to LOG501, Case 1, and using the EBBD Simulation.
Part 1: http://youtu.be/WvSggJC1SrQ
Part 2: http://youtu.be/NOK4-P56RF8

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Part 1

To: Danny Wilco

From: Me

Subject: Ordering product for EBBD from KHBC

KHBC is organizing a new advertising campaign. The purpose of the campaign is to popularize the KHBC brand of beer in the Midwest, especially to the college student ...

Solution Summary

Answered in 1292 words. The Word file contains the solution to Parts 1 and 2. Graphs and tables have been provided to explain the results of the simulation and to explain the bullwhip effect. The Excel file contains the results of the simulation.

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See Also This Related BrainMass Solution

The Bullwhip Effect and the EBBD Simulation

Question 1:
Focuses on beer as an end item, for the consumer. And you have to become familiar with part of the supply chain with you as a wholesaler. You will also experience the Bull-Whip Effect as you practice in the EBBD simulation. Consider the idea of feedback within a system. Feedback as some form of information that is used to make decisions about controlling rates of flow.
How does feedback, or the absence of it, help to create the bull-whip effect? What feedback would you like to have, specifically, as you determine your weekly orders for Kentucky Swamp Brew? How would you get such information? When would you like to have it?

Question 2:
The EBBD Simulation is intended to help you learn about the Bull-whip effect as you experience what it is like to be responsible for ordering a product to distribute to your customers.
Comment on this simulation. Did it help you learn? What did you like about it, not like? What are some ideas you have for making the simulation better?
Would you like to also play the role of one of the retail customers, ordering beer to stock in your store and having to deal with not getting your orders from EBBD on time?
Any other ideas or comments?

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