International Economics Prof. D. Sunitha Raju Introduction to International Economics.
International Economics - kuweb.econ.ku.dk/Nguyen/teaching/Spring09/Lecture01Spring09.pdf ·...
Transcript of International Economics - kuweb.econ.ku.dk/Nguyen/teaching/Spring09/Lecture01Spring09.pdf ·...
Professor: Dan NguyenOffice: Studiestraede 03‐031 (office hours by appointment)Email: [email protected] (email me)Lectures: HO3 Wednesdays 15:00Website: http://web.econ.ku.dk/nguyen/teaching/Spring09/
Book: Feenstra and Taylor (International Trade or International Economics)
Exam: Book, class notes, published papers
Questions:
Why does international trade exist?
Why do rich countries trade with poor countries?
Why do rich countries trade with each other?
Is trade beneficial? For everyone?
What are the effects of reducing tariffs?
International Economics
Lecture 01 Page 1
Scenario: Denmark builds a Lego factory in China, which uses Vietnamese immigrant labor, and sells Chinese made Legos to USA.
International Trade: Movement of goods across countries
Import: the purchase of a good from another country (or the good in question)
Export: The sale of a good or service to another country (or the good in question)
Trade balance: the difference between a country's total value of exports and it's total value of imports.
Trade surplus: Trade Balance when the Trade Balance > 0 (Exports > Imports)
Trade deficit: Trade Balance when the Trade Balance < 0 (Exports < Imports)
Bilateral Trade Balance: The trade balance between two countries
Production: Transformation of factors into goods
Definitions
Lecture 01 Page 2
Import Tariff: A tax on an import taken by the importing country.
Trade Barrier: something that lowers the possible trade between two countries
Movement of Factors across countries
Migration: The flow of people across countries
Scenario: Denmark has builds a Lego factory in China, which uses Vietnamese immigrant labor, and sells Chinese made Legos to USA.
Foreign Direct Investment: The flow of capital across countries
Horizontal FDI: FDI in order to overcome/reduce trade barriers
Vertical FDI: FDI in order to reduce factor costs
Lecture 01 Page 3
An effective map(model):Reduces world complexity without losing predictive power.
Learn Economic intuition with Math
Modeler's job: make the model just complex enough to answer the posed questions.
Models As Maps
Lecture 01 Page 4
Assumptions: Two countries, Two goods
single factor ‐ Labor
constant returns to scale technology
Technologies differ across countries
Example: j = Denmark and Vietnam
i = beef and cellphones
L = 100 for both countries
y_ij= output
Denmark Vietnam
Beef ( kgs) 10 5
Cellphones 5 2
Utility:u consumption: x 1j bj cju x x
*ij ij ij
bj cj j
y m l
l l L
ijm
The Ricardian Model: A simple trade model (Chapter 2)
Lecture 01 Page 5
Autarky: No Trade
ijm Denmark Vietnam
Beef (kg) 10 5
Cellphones 5 2
1,max
. .
bj cjx x j bj cj
bj bj bj bj
cj cj cj cj
bj cj
u x x
s t
x y m l
x y m l
l l L
*ij ij ij
bj cj j
y m l
l l L
1j bj cju x x
Denmark's Autarky Equilibrium
Lecture 01 Page 6
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