coefficients are out of our expectation. Our estimation result is this :〖 β〗_2=-.0000264<0,β_3=0.00000736>0,β_4=0.000221>0 .
We discuss about the result because the regression result are all derailed from our expectation with respect to sign of coefficient. The limitation of our regression result is basically from the data. Firstly, we have very small data, just 47. It can mak
초 록
이번 실험에서는 Cu-IDA complex를 서로 다른 Cu(NO3)2?3H2O(aq, 0.02M): NH(CH2COOH)2(aq, 0.02M) 비율로 혼합하여 spectrophotometry로 흡광도를 측정하고, complex의 formula와 stability constant를 추정해보았다. 서로 다른 volume fraction(IDA: 2,5,7,10,12,13,15,18,20,23mL, total 25mL)의 mixture를 만들고, HNO3(aq, 15%)과 NaOH(aq, 0.5M)으로 모든 sam
1.1 Soft lithography
Microstructure나 nanostructure을 만들기 위한 printing, molding의 과정을 포함하는 technique으로, 일반적으로 printing, molding, transfer의 3단계 과정을 거친다.
1.1.1 Printing
Master를 만드는 과정이다. Photolithography, e-beam, micro-machining, photoresist 등 다양한 방법을 통해 원하는 모양을 가지는 master를 제작할
II. The Definition of VaR
Value at Risk (VaR)
Maximum loss not exceeded with a given
probability defined as the confidence level,
over a given period of time.
III. Interpretation of VaR
The Question Being Asked in VaR
“What loss level is such that we are X %
confident it will not be exceeded
in N business days?”
Confidence Level
Probability that Por
2. Reasons & Solutions
1) The origin of the vicious cycle
Since 1997 the IMF put in place a series of related policies, which leaded to a sharp decrease of Korean middle class, however, the income of the high- income groups who held most of financial property increased. Under the circumstance, the social polarization has become increasingly serious. It was also demonstrated by Gini coefficie