SOD에 대한 이해
1. THE RSL99 LANGUAGE FOR ROLE-BASED SEPARATION OF DUTY
CONSTRAINTS
Separation of duty(SOD)는 컴퓨터가 생기기 전부터 알려지고 사용되었던 fraud(속임, 사기)와 error를 방지하기 위한 fundamental technique이다. 이에 대한 연구가 이전부터 있었지만 SOD policies에 대해서 체계적인 방법으로 설명된 적은 거의 없
2.3 C-V graph
The measured MOS capacitance (called gate capacitance) varies with the applied gate voltage.
① Measurement of C-V characteristics
-Apply any DC bias, and superimpose a small (15 mV) ac signal
-Generally measured at 1 MHz (high frequency) or at variable frequencies between 1KHz to 1 MHz
-The dc bias VG is slowly varied to get quasi-continuous C-V characteristics
② C-V chara
Phone calls for the wrong number seem to come at very inconvenient times. a few weeks ago I was getting comfortable with a snack and a movie movie when suddenly the phone rang. As I was running to the phone, I tripped phone and picked it up, a strange voice asked for Julie.
I also get wrong numbers when I’m in the bathtub. last weekend I was enjoying a nice hot bath when, of c
transitions appear as a step in the baseline of the recorded DSC signal. This is due to the sample undergoing a change in heat capacity; no formal phase change occurs.
As the temperature increases, at some point the molecules may obtain enough freedom of motion to spontaneously arrange themselves into a crystalline form. This is known as the crystallization temperature (Tc). This transition fr
위와 같은 시뮬레이션이 있다. _Pt를 1.9270e-3로 둬서 신호세기를 맞췄을 때는, 패킷이 전혀 도달하지 못하는 것을 알 수 있다.
[그림 20] 신호세기가 약해 도달하지 못한 상황
이 상태에서 _Pt를 1.9270e-3에서 _Pt를 1.9271e-3로 올렸을 때, 다음과 같이 패킷을 잘 전송할 수 있음을 알 수 있다. 이런 방식으