efficiency의 경제적, 환경적 장점을 알리고, 사람들에게 renewable energy의 정보를 제공하는 제공자로서 행동한다. 매년 Conference를 열어서 사람들에게 환경문제에 관한 정보를 제공하고, 문제점을 시사해 주는 등의 역할을 맡고 있다.
Colorado Renewable Energy Society (이하 CRES)는 비영리 회원 단체로, 재생에너지
efficiency energy means that most energy is lost with heat loss. Additionally, in case of driving in low speed, the fuel efficiency is very low. On the other hand, enhanced energy efficiency through electronic motor and battery, enabled hybrid car to operate better even in low speed. With much higher energy efficiency, hybrid cars consume less oil, representing that hybrid car is more efficient a
9. n-type Semiconductor에서 온도에 따른 Carrier 농도 변화
매우 낮은 온도에서는 intrinsic EHP가 거의 존재하지 않는다. 온도가 증가함에 따라 도너의 전자들이 Conduct band로 옮겨지고 약 100K에서 모든 도너 원자가 이온화되는 과정이 발생한다. 이후 ni가 Nd와 비등해 질 때까지(intrinsic carrier 농도가 도너 농도와
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. What dows UNDP do?
1) what is the UN?
The United Nations (UN) an international treaty that spells out the rights and duties of member states. is a unique international organization of 192 sovereign states established in 1945. Its goal is to maintain international peace and security, to develop friendly relations among nations, and to promote social progress, a better living standard and hum