1. Pump에서의 Cavitation (공동현상) 에 대하여 기술하고 이로 생길 수 있는 문제점과 그 방지책에 대해 논하시오
- Cavitation이란
유체가 넓은 유로에서 좁을 곳으로 고속 유입하거나 벽면의 요철, 만곡부 등으로 흐름이 직선적이지 못할 때 유체는 저압이 되고 포화증기압보다 낮아지면 기화되어 기포가
(1) Project Objective
To develop a new commercial product that is valuable, feasible, and practical in the real market.
(2) Deciding The Market for The New Product
In this world, there are myriad markets, consumers, products. However, considering our company's technologies(internal factor) and marketability(external factor), we chose the market of kitchen utensils for our new product.
not have an absolute advantage. When each country exports the product in which it has a comparative advantage, all the countries engaging in trade would experience an increase in welfare.
The theory of ‘comparative advantage’ was a revolutionary idea at that time, and even today, its logic is used to support and promote global free trade.
2. Testing the Ricardian Model: Empirical Analysis
testing it by regression analysis, few variables had eliminated. Among the economic variables we added at the beginning, the labor participation is the only left one. The final model indicated that economic variables do not fully explain the high ration of suicide in Korea.
Therefore, the suicide rate in Korea has more association in aging society or divorce rate rather than labor participation