. 서 론
어느 집 화장실에서나, 우리또래 여대생의 화장대 한쪽 구석에서 흔히 볼 수 있는 화장품. 처음으로 재활용 쓰레기통에 넣어보았던 화장품. - 바디샵(The Body Shop)
항상 화장품을 쓰면서 "왜 화장품 유리용기는 재활용 할 수 없는가?"를 생각했던 우리에게 바디샵의 제품들은 나에게 인상적일
1. 서 론
1.1 Gas Chromatography
혼합물의 분리 방법인 Chromatography의 일종으로, mobile phase로 gas를 이용한다.
1.1.1 Overall Instrumentation
Fig.1. Overall instrumentation of GC
Carrier gas가 flow rate controller를 거쳐 주입된 sample과 column에서 만나고, 이것이 detector로 이동한다.
1.1.2 Carrier gas
GC에서 mobile phase로 이용되는 gas로
Sensitivity Analysis is a process whereby the soundness or robustness of the results and conclusions of economic evaluations are tested by varying the underlying assumptions and variables over a range of plausible values
Purpose of Sensitivity Analysis
Used to determine the effect of data uncertainty, or assumptions, on study conclusions
Used to identify the most important study assumpti
SK Telecom offers cellular global roaming services under the brand "T-Roaming" through service agreements with various foreign wireless telecommunications service providers. The company offers global roaming services in three basic technologies, including CDMA, global system for mobile communications (GSM), and wideband code division multiple access (WCDMA). As of FY2009, the company offered CDMA
the market-to-book ratio of the firm
Together explanatory variables, and a constant, make up the vector Xit, which we use to predict failure at different horizons.
Vector Xit is a corporate character of financial state. It is a constant figure for respective companies.
A vector of our explanatory variables, including a constant,
Observed at the end of month t, failure at different horizons