Fatigue Failure Process
균열발생 단계(Crack-Initiation Stage)
공업재료는 연성이며 제조한 상태대로는 균열이 존재하지 않지만, 일반적으로는 입자, 함유물 등을 포함하고 있다고 가정한다. 미시적 크기에서 금속은 균질하지도 않고 등방성도 아니다. 또한 기하학적으로 응력집중(노치)이 되는 부분이 있다
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
04. The incidence of failure following single-visit endodontic therapy
Richard B.Pekruhn. J Endod 12:68-72. 1986
Introduction
- Single-visit 근관 치료와 multiple-visit 근관 치료사이의 실패율 유의차 없음
- Single-visit 근관 치료는 다음 세 가지로 분류
① 초기접근, 근관 형성, 근관충전이 single-visit 근관 치료로 완료
② 통증
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
market, we, 美ME+ also is looking to expand our business.
This report is divided into two parts, the first half; we will talk about the Japanese market as a whole cultural risk, country risk, and currency risk. And in the later half; we will analysis the cosmetics market in Japan, and describe our company’s market strategy. After that, we will predict future prospects of our company.