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
Ⅰ. Wizwid 개요
-한국엔 없다! 위즈위드엔 있다! : 국경 없는 전자상거래 서비스
Wizwid.com은 2001년 2월 SK글로벌의 해외 쇼핑서비스 대행사업으로 시작된 사이트로써 현재 가입자 수 82만 명에 월 평균 방문자 수 150만 명, 2004년 예상매출 350억 원을 예상(전 년 대비 170%)하는 대
- 세절기의 손잡이 부분에 롤러형 도장을 접목, 문서보안 방법을 문자를 지우는 방식과
자르는 방식으로 다양화
CAD model 수정
Blade에 구멍을 가공하여 회전축에 홈을 낸 후 핀을 이용하여 고정하는 형태로 수정
• 장점 : Blade를 낱개씩 교체할 수 있음 → Blade 교체 시 비용절감.
testing was recorded in the company’s product report so we didn’t have to go through separate calculations.
-42”1/2 and 32”1/2 are big models, and 21.6”1/2 and 18.5”1/3 are small models. Since small models are almost half of the big models, we assumed that labor hours and cost decrease by half.
②Cost per labor Hours
Cost per labor hour assembly:
Formula: 1
model
We are exposed to many beer advertisements using models,, humor, and music.
Beer advertisements are typical in using the advertisement model related with model, humor and music. For an example not only beer but domestic markets of all alcohol industries all use famous celebrities as models in advertisement. These advertisements combine with elements such as music and humor. Most of soj
Hypothesis &Related models
1. We forget our cell phone due to the attention of a similar object (wallet):
bottle neck effect in cognition
2. We concentrate on the loss of money than the loss of our cell phone :
bottle neck effect in feeling of loss
(중략)
Results of similar researches
As we know Broadbent’s filtering model and Treisman’s attenuation model we