What is Bioenergy?
Bioenergy is renewable energy made available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood, wood waste, straw, manure, sugarcane, and many other byproducts from a variety of agricultural processes.
So, Why do we produce Bioenergy?
One reason governments
Ⅴ. Financial status
ⅰ. Ownership
Dow Jones was in recent years publicly traded but privately led by the Bancroft family, which effectively controlled 64% of all voting stock before being acquired by Rupert Murdoch’s News Corporation. The company became a subsidiary of News Corporation after an extended takeover bid during 2007. It was reported that on August 1, 2007 that the bid had been
Solar – CdTe 박막형)
높은발전원가
장벽으로 존재
08’년과 비교해 48%의 가격 하락 – 보조금에 따른 시장 확대 효과
전반적인 supply chain 상 가격 하락 경제성 및 시장성 확보
Proposal – LG 그룹의 시장 진출 방안
수직적 통합 & 가격경쟁력: 성융이 보여준 가치 사슬의 수직적
solar panel business requires sophisticated technologies and greater investment, which brings high barriers to entry. But once entered, the possibilities of others entering would be low. However, there are many substitutes to the solar panel industry, such as the fossil fuel. Because there are many alternatives, the buyers’ power is high – they can switch to other industry at any moment.
In 1958, commercialization was
start by be used to Vanguard 1
satellite for power supply
In 1970, start enormous investment of commercialization and research
In 1977, development of amorphous solar cell
In 1991, invention of silicon solar cell mounted on the vehicle & start of the study about thin film pol
The most common form of solar cells are based on the photovoltaic (PV) effect
Two layer semi-conductor device produces a photovoltage or potential difference between the layers
No fuel cost or fuel supply problem
No pollution
High reliability
Small amount of power required
Depend on place and climate
Large scale:
Ocean navigation aid
Telecommunication system
Remote moni
Objective 1
It is important for consumer researchers to understand the nature and power of attitudes.
태도(attitude)
: 사람들(자신을 포함해서), 대상들, 광고들, 또는 쟁점들에 대한 영속적이고 일반적인 평가
실용적(Utilitarian)
가치-표현적
(Value-expressive)
자아-방어적
(Ego-defensive)
지식
(Knowledge)
Objective 2
Attitudes are more
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
1) 太陽電池(태양전지)는 태양광에너지를 직접 전기에너지로 변환할 목적으로 제작된 광전지입니다.
2) 금속과 반도체의 접촉면 또는 반도체의 pn접합에 빛을 조사(照射)하면 광전효과에 의해 광기전력이 일어나는 것을 이용한 반도체화합물 소자이다.
주) 광전효과 (光電效果: photoelectric effect) : 일반