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Exam 1 ISyE 4301
Please read thefollowing: This is a closed~book and closed-note exam. In addition,
calculators and/or other devices such as phones are not allowed during the exam
and must be cleared from your desk. By signing the followin
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lSyE 4301A Quiz 1
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1. Show whether the following production function exhibits: constant, increasing, or decreasing retu ns
to scale: q = 10(L2 + K2). 1
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lemma: wmw
'-= ml(i9§LL7‘ Ky»
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p) Thmggvﬂ‘tv
2. Suppose a firm pays w for
ISYE 3039 Methods for Quality Improvement
Summer 2012
Homework 5 solution
Due: 07/18, 2012
Problem 1 (30 points)
Analyze the data collected in the 23 design shown below. Please calculate all main effect,
all 2-factor interaction effect, and all 3-factor i
ISYE 4301: SUPPLY CHAIN ECONOMICS
HOMEWORK TWO
Problem 1 . Dry Gulch has two water suppliers. One is Northern Springs, whose water is crystal clear but not carbonated. The other is Southern Pelligrino, whose water is naturally carbonated but also somewhat
ISYE4301 HW#2
Due date: 15:59 p.m., Oct. 10, 2013
Write a report with the answers to the following questions. Please deliver it to Mathias Klapp
(326, Main Building) or submit it electronically via T-square.
The report should contain everything that I nee
Introduction to Supply Chains
Strategy and Economics
1
Outline
What is a corporation?
What does a corporation do?
Corporate strategy
Innovation
Corporate risk
What is an industry?
Industry dynamics
Logistics industry
U.S.
Energy consumption
International
Network Planning
Chapter 3, Simchi-Levi (3rd ed)
1
Outline
s
s
s
s
Introduction
Network design
Data collection
Data aggregation
Transportation rates
Mileage estimation
Warehouse costs
Warehouse capacities
Potential warehouse locations
Service leve
QUIZ #1
ISYE 4301 Supply Chain Economics - Fall 2013
24 September 2013
SOLUTION KEY
Grading Policy:
Each question has 8 points.
Quiz total is 40 points.
There was partial or even total credit for numerical errors.
Conceptual errors have no credit.
Co
ISYE 4301b Homework 3 Solution
1. Problem from the textbook, on page 60 after chapter 2. The italics are direct quotes
from the book.
1.1. 1.b. (5) What does the coecient of variation tell us? Can you determine the
coecient of variation for the DuraBandT
Homework 1, Due: Wed, Aug 26
1. (10) Please answer the following questions. You can link your answers to the big box retailer
rivalry used in introduction or others.
1.1. What is the most often used objective function in supply chain?
Minimize cost. In bi
Homework 6, Due: Wed, Oct. 7
1. In an area, there are 30 suppliers of various products and 200 clients. The demands from each
client from each supplier can be approximated by U (0, 20) cases per week.
1.1. (5) If each supplier delivers to its own clients
Homework 7, Due: Wed, Oct. 14
1. (20) From HW 6, what are the transportation needs from DC1 to client 26? This quantity is
useful for the 3PL to build pallet loads, truckloads, etc. to reduce cost in DCs or in
transportation.
Clients
Suppliers
11
12
13
DC
Homework #9, Due: Wed. Nov. 12
1. A simplified machine supply chain is depicted in the figure below. Please find
1.1. (10) If everything is made to order, what is the minimum order leadtime for all
customers?
This is a longest path problem.
The longest ex
Homework 3, Due: Wed, Sept 9
1. (5) Why is variance alone not a sufficient measure of variability in supply chain? What
measure is more indicative?
2. (5) What assumptions do you need to show pooling effect? What are the exceptions?
3. (10) List all the w
Homework 10, Optional
This home work is optional. For those who decided not to take the final, this is required and its grade will
be counted as final exam grade in a special way. The cut offs for
Desired grade
A
B
C
D
Minimum %
to qualify
before final
93
Homework #8, Due: Wed. Nov. 5
1. A firm makes popular hand tools. It is working with a shops to sell its tools. The shop can put
in high effort that will lead to an average monthly cost of $1000, or low effort at $200 per
month. The expected high revenue
Homework 2, Due: Wed, Sept 2
1. (10) What are the assumptions in a Newsvendors model? List all situation(s) in which a
Newsvendor model apply and provide an example.
Known demand distribution, either continuous or discrete. The demand is iid. It applies t
Homework 4, Due: Wed, Sept 16
1. (15) What are the characteristics of a brick and mortar retailer and an on-line retailer? What
are the important pros and cons of each? Please link your discussions to scale, variations and
scope, and show which parameter
Homework 5, Due: Wed, Sept 30
1. (10) The demand forecast is given as N(800, 2002) per week. The demand leadtime is 9
weeks. The company set the safety factor is set at 2.
1.1. (10) What is the level of safety stock based on pooling in time?
S . S .= 9200
Homework 3, Due: W, Sept 10
1. A distribution center supplies 3 stores. The expected demands of one SKU in each store are
30, 40 and 60 per week with variance of 25 2, 202 and 302.
1.1. (10) What are the coefficient of variation of each store?
1.2. (5) Wh
Homework 4, Due: W, Sept 17
1. A company makes 3 products through one of its production lines. The weekly demands are
4000, 300 and 300. The production rates are 10000, 1500 and 1500 per week. The cost of
the products are 650, 100 and 300. The setup cost
Homework 6, Due: W, Oct. 8
1. (10) In a sellers market in which the upstream partner dominates and make-to-order placed
by the downstream partner.
1.1. Without a contract, who is to take the risk?
1.2. Who has to make the decision first? What is the main
Homework #8, Due: Wed. Nov. 5
1. A firm makes popular hand tools. It is working with a shops to sell its tools. The shop can put
in high effort that will lead to an average monthly cost of $1000, or low effort at $200 per
month. The expected high revenue
Practice Problems 4
1. Suppose a distributor faces an annual demand for a car horn for small cars that is normally distributed
with a mean of 2300 items and standard deviation of 300. The cost of placing an order is $150 and the
holding cost is $10/item/y
Practice Problems 5
Note: The first three problems are to remind you about working with different
distributions for the newskid framework.
1. The bookstore orders Georgia Tech Volleyball shirts once for a selling season
from a manufacturer in Malaysia. Th
Homework 8/15
1. Suppose U ( x , y )= xy . Do the following:
a. Construct the indifference curve for U ( x , y )=10 .
b. Determine the marginal rate of substitution at (x=5, y=20) and (x=20,
y=5).
2. Suppose the utility function is given by U ( x , y )=x
5. THE DISECONOMIES OF WASTE
The economies of waste referring to the waste in the supply chain. This is a negative effect with
strong impact. One of the most important aspect of lean drive is to reduce various types of waste:
raw materials, WIP, products,