1. 기존 PLANT 내의 제어실에 새로운 CONTROL SYSTEM 을 설치하고 기존 CONTROL SYSTEM 과의 DATA COMMUNICATION을 하려고 한다. 이때 고려해야할 사항을 설명하시오. 또한, OSI (Open System Interconnection) 7 Layer 에 대해 설명하고 TCP/IP 4계층과 비교 및 적용되는 Protocol의 예를 드시오.
① 이기종간의 제어시스템간의 데이타
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
high mobility of charge carriers in the MOSFET channel
Minimization of the concentration of electrically charged and/or electrically active defects in the film
Film morphology - Amorphous or epitaxial films seem to be the promising candidates - polycrystalline materials are generally ruled out.
Interface quality
Compatibility with the current or expected materials to be used in processing
drift zone이다. Avalanche zone은 다른 부분에 비해 상대적으로 dopping이 많이 된 부분으로서 avalanche multiplication이 일어나는 지역이다. Drift zone은 본질적으로 dopping이 되어있는 부분으로, negative voltage를 diode 양단에 걸어주었을 때 발생하는 avalanche multiplication으로 인하여 발생한 전자들이 통과하는 부분이다.
Abstract- This paper presents an X-band voltagecontrolled
hairpin resonator oscillator using GaAs
MESFET varactor. To get wide tuning range, the
hairpin resonator is combined with the MESFET
varactor. It is incorporated into the series feedback
oscillator. The measurement of the oscillator
showed the frequency tuning range of 11.15 MHz
with the output power flatness less than 0.10 dB at
t