color film, a board of Kodak thought a sector of digital camera easily. It invented much budget to color films and succeed, so it thought that the same way would help to digital cameras.
2. Kodak indeed began having good technological success in digital cameras, but mostly it pushed the Photo CD. How can we explain why a company with leading-edge digital imaging technology and an a
Phosphor (Energy Converter)
Inorganic phosphor materials
“Classical” inorganic phosphors usually consist of a host lattice with activator ions doped into it in small concentrations, typically a few mole percent or less.
Host lattice & Activator ion
1st type : weak interaction (Ln3+)
2nd type: strong interaction ( Mn2+, Eu2+, Ce3+, Pb2+,Sb3+, Ce3+, MoO42-, NbO43-)
Activator (+ Sensit
Ⅱ-3) Sound
Sound Marketing
Sound marketing is also viewed as a leader of the emotional marketing along with color, and scent marketing. It based on character which varies feelings and moves people's heart depending on melody or rhythm.
This is example of sound marketing. In case of store selling the wine, expensive wines are more sold out when they used classic music. Ot
․Global Steel Industry
In 2004, Rapid demand growth in China (80% of the total increase ) caused new problems which are raw material shortage and bigger demand fluctuations. World demand for steel : will increase by 3.4%/year ('04'10) particularly in Asia.
․Mega Trends in Steel Industry
Consolida
Present and Future State of the U.S. Auto Industry
Causes of Suffering
The U.S. economy is coping with the worst economic downturn, and worst credit market conditions, since the Great Depression. Consumers have had to contend with illiquid credit markets, rising unemployment, declining incomes and home values, and volatile fuel prices. As a direct result, the entire auto industry has suffer
1. Introduction
흔히들 21세기를 ‘빛의 시대’라 말한다. 과거 실리콘 반도체가 전자 정보의 혁명을 가능케 했다면 이제 제 3세대 반도체인 질화물 반도체가 21세기 빛의 혁명을 예고하고 있다. 발광다이오드(light emitting diode: LED), 즉 "빛을 내는 반도체"가 바로 그것이다. LED는 p형과 n형 반도체의 접합으로
two interpretations, one applying to this world, the other to the next. On the first level--most obviously the wish-fulfillment level--the "coffins of black" are the chimneys the boys work in; the "Angel" who releases them is a wise legislator or rich benefactor (like Oliver Twist's Mr. Brownlow) who releases them from the bondage of their labor with the key of social legislation or of wealth; th
Inorganic phosphor
○ A phosphor, most generally, is a substance that exhibits the phenomenon of luminescence.
○ Phosphors are often transition metal compounds or rare earth compounds of various types.
○“Classical” inorganic phosphors usually consist of a host lattice with activator ions doped into it in small concentrations, typically a few mole percent or less.
Host lattice &
실험예비레포트
학과
전기공학과
학번
04509043
학년
3학년
이름
한태현
실험 4. 광전소자
1. 적색과 녹색 발광 다이오드(LED)들에 대한 자료를 얻는다.
2. 7-세그먼트(senen-segment) 지시기로 숫자를 표시한다.
3. 광결합기를 통하여 신호를 전달한다.
1.
실험 목적
발광다이오드란?
반