있으며 동시에 축의 고유 주파수라고 할 수 있다. One dimensional forced vibration 의 경우 응답의 위상은 다음과 같이 나타난다.
그러므로 감쇠를 무시할 경우, Φ는 0에 가까운 값을 유지하다가 공진 주파수 영역에서 급격하게 Π/2 의 값을 갖은 후 다시 급격하게 Π 의 값을 갖게 된다. (아래 그래프 참조)
3D printing
3D printing or additive manufacturing (AM) refers to any of the various processes for printing a three-dimensional object. Primarily additive processes are used, in which successive layers of material are laid down under computer control. These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source.
Basic principles
If the
3D structures in advanced devices and scaling to 450 mm wafers. Also Lam Research Corporation has Customer Support business Group (CSBG) dedicated to optimizing installed equipment performance and operational efficiency.
In 1997, the new management team at Lam Research introduced a clear vision and strategy to gain market share, improve financial performance, and build a values-driven workforce.
입체 TV 기술 개발」을 추진하고 있다. 유럽에서는 2004 년 9월 EC 의 지원 하에 Bilkent 대학, De Montf
ort 대학 등 7개국 19개 기관이 참여하여 3DTV(Integrated Three-Dimensional Television-Capture, Transmission and Display)라는 컨소시엄을 구성하여 입체 영상의 획득, 전송, 디스플레이 등의 연구를 진행하고 있다.
Ⅰ. Introduction
As our world is called ‘Knowledge-information society’, human resource becomes a major driver of the national competitiveness. Intelligence is one of the most important factors in deciding excellent human resource. Therefore, a country should focus on improving people’s intellectual ability as one way of securing good resource to enhance its competitiveness. We