CHAPTER 11. CLASS
DIAGRAM
Introduc8on
Func8onal models represent system behavior
Structural models represent system objects and their
rela8onships:
People
Places
Things
Structural Models
Drawn using an itera8ve proce
CHAPTER 13
SEQUENCE DIAGRAMS
Sequence Diagrams
The sequence diagram is used primarily to show the interactions
between objects in the sequential order that those interactions
occur. Much like the class diagram, developers typically think
sequence diagram
CH12
.
Which of the following is not associated with database design?
Answer: b
The most common style for a logical database model is the:
Answer: a
During logical database design, the work of all systems development team members is coordinated and shared
1. A (n) _ of an analysis class is where the behavior of the class is defined.
ANS:Operation
2. A-kind-of relationships represent _ relationships.
ANS:Generalization
CRC cards are used to document the responsibilities and collaborations of
a(n) _.
ANS:Cla
116
1.The three main constructs of the entity-relationship modeling notation include each of the following
except: b. data flows
2.A named property or characteristic of an entity that is of interest to the organization defines:
a. attribute
3.For each ent
Name:
Student number:
Class:
MBJZ03 Intermediate Econometrics I
Quiz 2
Q1: Can we estimate the following model by using OLS? Why?
= + +
Q2: Consider the linear regression model given by
y = 0 + 1 +
and suppose you are given the following data:
y
x
2
4
MBJZ03 Intermediate Econometrics I
Quiz 1 Answer key
Q1:
(1) P() = 6 > 0, x = 1,2,3
1
2
3
(2) 3=1 () = 3=1 6 = 6 + 6 + 6 = 1
This equation is a probability density function
Q2:
z
(a) = 10 2 6;
20 xy .
y
(b) z = 6x,
z
z
0.
6;
x
y
3 1
1 2
Q3: The inverse
Name:
Student number:
Class:
MBJZ03 Intermediate Econometrics I
Quiz 2
Q1: Can we estimate the following model by using OLS? Why?
=
Hint: this model is not linear but it can apply a suitable transformation into linear.
Q2: Given the regression results b
Name:
Student number:
Class:
MBJZ03 Intermediate Econometrics I
Quiz 1
Q1: Is the following equation a probability density function? Show your working
progress!
P() =
( 3 3)
7
for x = 2,3.
Hint: P() is a probability density function if 1) P() 0, < x < , 2
Name:
Student number:
Class:
MBJZ03 Intermediate Econometrics I
Assignment 2
Instructions: This assignment is due in Week 8. Hand in your work in your class in
week 8 (10/26). No extensions will be given, and late assignments will receive no
credit. If yo
Create a relation with primary key and nonkey attributes is the relational representation for
which E-R structure?
b. regular entity
A binary one-to-many relationship in an E-R diagram is best represented by:
b. adding the primary key attribute (or attrib
CH10
Which of the following specifies that if an entity instance of the supertype is a member of one subtype
it cannot simultaneously be a member of any other subtype?
c. disjoint rule
Which of the following specifies that each instance of an entity type
International Trade Exercises: Ch 4 Specific Factors Model
1. In the specific factors model, which of the following is treated as a specific factor?
A) land
B) labor
C) cloth
D) food
E) technology
2. The slope of a country's production possibility frontie
Bill
Bertha Bob
Majority Vote Results
x beats y
Bill
Bertha Bob
x
y
z
x
y
z
y
z
x
y
z
x
z
x
y
z
x
y
Majority Vote Results
x beats y No
y beats z socially
z beats x best
alternative!
Majority voting does
not always aggregate
transitive individual
preferenc
Coconuts
More preferred
Technology: Labor produces output
(coconuts) according to a concave
production function.
24
RCs firms profit is = C - wL.
= C - wL
C = + wL, the
equation of an isoprofit line.
Slope = + w .
Intercept = .
0
Leisure (hours)
6
Coconut
2
Edgeworth and Bowley devised a
diagram, called an Edgeworth box, to
show all possible allocations of the
available quantities of goods 1 and 2
between the two consumers.
B
1
OB
2
6
B
2
OA
A
6
B
8
A
2
4
B
2
B
1
2
6
Width =
2
B
1
6
2
B
2
The
endowment
all
Similarly, given y1, firm 2s profit function is
Suppose firm 1 takes firm 2s output
level choice y2 as given. Then firm 1
sees its profit function as
1
1
2
1
2
1
1
2
1
1
2
2
2
Firm 1s reaction curve
y2
2
2
y1
60
So, given y1, firm 2s profit-maximizing
out
Player B
U
Player B
L
A game consists of
a set of players
a set of strategies for each player
the payoffs to each player for
every possible choice of
strategies by the players.
L
R
(3,9) (1,8)
Player A
D
(0,0) (2,1)
This is the
games
payoff matrix.
U
D
$/input unit
What if the firm is a monopolist in its
output market while still being a
price-taker in its input markets?
p
MCxm = w(x) + x dw/dx
MPi( xi )
MR( y )
MPi( xi )
wi
x*m
i
5
Input
Output
Market structure
market
market
Price taker Price taker Per
$/output unit
E.g. if p(y) = a - by then
R(y) = p(y)y = ay - by2
and so
MR(y) = a - 2by < a - by = p(y) for y > 0.
Suppose that the monopolist seeks
to maximize its economic profit,
a
a
a
What output level y* maximizes
profit?
p(y) = a - by
p(y) = a - by
Firm 1s Supply
p
Firm 2s Supply
The Market
p
Short-run industry
supply
p
ps
S1(p)
S1(p)
p
p
A Typical Firm
p
Mkt. Demand
S2(p)
MC(y) AC(y)
Mkt.
Supply
e
S2(p)
Market demand
p
Y se
S1(p)
S(p) = S1(p) + S2(p)
Industrys Supply
Firm 1s Supply
p
p
How are the
F is the total cost to a firm of its shortrun fixed inputs. F, the firms fixed
cost, does not vary with the firms
output level.
cv(y) is the total cost to a firm of its
variable inputs when producing y
output units. cv(y) is the firms variable
cost functi
$/output unit
If the firm sets its own price above the
market price then the quantity
demanded from the firm is zero.
If the firm sets its own price below the
market price then the quantity
demanded from the firm is the entire
market quantity-demanded.
Do
Offering Courses for 1st Semester of Academic Year 2015/2016
(as at 2015-08-19)
Courses in blue are GE courses.
Offering Offering
Unit
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Course Code Course Title
Teacher
Lecture / Lab
Day
Time
From
Time To
CTLE
GEGC212
SPECIAL TOPICS IN MACAO, CH