1.1 Study Designs
․Retrospective Studies
․Prospective Studies
※ Survival Analysis
; Deals with analysis of data that have "time to an event".
※ Survival time
; Time until an event occurs.
※ Event
; a. relapse of a disease
b. death
c. response to a treatment
; Economical,
To obtain answers quickly because the cas
Synthesis
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized polymers with surfaces containing complementary functional groups
Grafting from
‘‘Grafting-from’’ involves an in situ polymerization of an initiator functionalized surface with monomer.
Grafting onto
“Grafting-onto” involves the chemical reaction preformed, functionalized p
In this project, solutions to second order linear recurrence equations with constant coeffi- cients have been investigated. We have used generating functions to derive the general solution to the homogeneous equation and we show that in general the particular solution is complicated to find. By limiting the right hand side (RHS) in the equation to a polynomial-exponential family of functions we c
stability, it can operate up to 8 web browsers at a time which I-phone cannot. Nexus one has Voice featured Keyboard which allows their users to write, send message without ever touching the screen. I-phone's got faster internet speed than Nexus one, but original I-phone doesn't support multi-tasking. (Possible when hacked) Nexus one's got better camera than the I-phone (Focusing speed, Capturing
것을 알 수 있다.
따라서, 후방연산자의 확률계수인 > 0 이면 표본자기상관함수 SACF는
지수적(exponentially)으로 0에 접근하고, < 0 이면 SACF는 진동(oscillatory)하는 형태로 0에 접근한다. 만일 가 비정상과정인 1에 가까운 경우에 감소하는 속도는 매우 느리고 지속적인 쌍곡선(hyperbolic)형태를 보인다.
the sales of Intel 8088, 8086 and later on 80286, 80386 chips inside IBM PCs have exponentially increased as the PC sales boomed. Until then Intel was making the same products that IBM or Compaq has set as the industrial standard. But Intel successful developed 80486, Pentium chip and set them as the industrial standard. It has become the leader in computer hardware from a mere parts supplier.
Ⅰ. 서론
부채효과를 처음으로 제기한 Black(1976)은 현재의 주가수익률과 장래의 수익률변동성 간에 (-)의 상관관계가 있음을 발견하였다. Christie(1982)는 주가변동성과 주가와의 관계를 분석한 연구에서 일정한 기업변동성의 가정 하에 주가변동성이 재무부채의 증가함수임을 발견하였는데 주가변동성