mechanical), 전자식(electro- dynamic), 그리고 유압식(electro-hydraulic) 등이 있다. Sine signal 및 stepped sine signal, random signal 등의 진동 환경을 제공할 수 있다. 각 종류에 따른 특성, 장단점은 다음과 같다.
1) The Electromagnetic Vibration Exciter
전자식 가진기는 위의 4가지 가진기 중에서 가장 폭넓은 주파수 대역에 사
Smart phone make people surffing the internet anywhere and make easy to approach social media. In social media people upload a picture or restaurant which they ate. That makes other people, who look at that social media like blog or facebook, etc., hungry. So we can think about these social media not only the human networks but also food industry marketing or some of promotion ways. Now we should
What is Piezo?
Piezo phenomenon
Inside the body, there are some transducers between mechanical Energy and Electric Energy
Mechanical Energy
▼
Electrical Energy
Background of Experiment
□ Al-Si Alloy
AI + Si = Al-Si Alloy
1. Low melting point
2. light
3. Large heat capacity
4. Insoluble to each other
.
.
.
Result and Analysis - EDS
□ Composition Analysis
Al, Si is almost insoluble to each other at rsoom temperature.
All solid phase will have either 100% Al phase or 100% Si phase.
Mobilizing Business Opportunities
From Compliance to Competitive Strategy
한 리포트에 따르면, CEO들중 90%가
‘지속가능성’을 회사의 성공적인 미래를 위한 요인으로 여기고 있다
“To realize sustainable consumption,
it is crucial to leverage lifecycle thinking at a strategic level
as a driver of business and policy innovation.”
– Steen