Hybrid
The hybrid car has two power sources – an engine and a secondary cell. These sources work respectively or simultaneously according to the driving condition to increase efficiency. Hybrid cars run on battery power at low speeds and switch to traditional internal-combustion at higher speeds. Since the capability of a secondary battery is not enough to replace the existing engine, it
Ⅰ. 신기술과 저작물
신기술에 의한 새로운 형태의 저작물이 태어날 때마다 저작(권)자 또는 저작물 이용자 모두에게 상당한 어려움이 따르고 있다. 새로운 기술의 탄생은 저작권자의 권리관계 및 저작물의 이용형태를 모두 바꾸어 버리기 때문이다. 그러나 새로운 기술이 나타날 때마다 이러한 어려
rose, higher level of electricity application became possible to realize.
(ex) Uninterruptible(UPS), Hybrid automobile
supercapacitors have a lot in common with batteries, but we can say that they are the newest form of battery.
You can charge it in a very short period of time and repeat a number of charge and discharge periods.
The energy efficiency is much higher than a battery.
Virgin group is very well known and respected company in the western countries. Even Virgin has very unique company culture and well known CEO named Richard Branson. Many Asian countries don’t know about them. Actually they underestimate a true value of virgin group. Therefore we will analyze structure and culture of virgin group. And then focus on the Richard Branson who is the CEO of Virgin.
1. 이동통신의 개요
1-1 이동통신이란
무선통신이란 공간을 전송매체로 하는 통신으로 송신측에서 정보신호를 전자파에 실어서 공간에 방사하고 수신측에서는 공간을 거쳐 전송되어온 전자파를 수신하여 원래의 신호를 검출하는 방식의 통신이다. 또한 전파를 매체로 해서 통신하기 때문에 사