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
Ⅰ. Introduction
1. Study background and objectives
Recently, due to environmental pollution and climate change, attention to environment is more growing than ever. Especially, buildings form 40% of energy and resource consumption, 30-40% of carbon dioxide emission, 20-25% of waste discharge, 17% of water consumption, and 25% of wood consumption, so buildings are mainly responsible for
1. Introduction
As technology was developed, electricity has become an essential energy to the public at large. That it, the consumption of electricity have been increasing. So, power generation equipment need to be expanded. There are several types of power generation system by generating facilities. Although the nuclear power plant's initial construction cost is expensive than other types o
1. Global management and Strategic Management
Global management is consisted of two factors globalization and localization. Of which we focused on cultural differences of localization and related it with strategic management practices.
2. Purpose and reasons of studying the two case of Samsung-Tesco & Carrefour
We believed that foreign corporations had a more developed strategic management sys
Ⅰ.Introduction & history
E-learning is the operation service which provides education, training and learning through the on-line and broadcasting system to be capable to communicate with both parties. And this business also includes the part which builds the hardware, software and network. E-learning business is divided three section, solution provider, contents provider and service prov