체외수정 - 배아이식 시술후 발생한 양측 난관임신 1 예

김희철,김희철 ( Hee Chul Kim ),최범채 ( Bum Chae Choi ),이재훈 ( Jae Hoon Lee ),양광문 ( Kwang Moon Yang ),홍수정 ( Soo Jung Hong ),김혜선 ( Hye Sun Kim ),김석훈 ( Seog Hun Kim ),김창헌 ( Chang Heon Kim ),강인수 ( Inn Soo Kang ) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.4

Over the last 20 years, the frequency of multiple pregnancy has increased mainly because of the introduction of exogenous pituitary gonadotropins in the treatment of infertility. Since the advent of assisted reproductive technology, the concern about ectopic implantation of embryos has increased dramatically and it continues to be a major complication of in vitro fertilization and embryo transfer (IVF-ET). Bilateral tubal pregnancy is the least common type of ectopic implantation of two embryos. Of all extrauterine pregnancies, 1:725∼1:1580 are bilateral1,2. Simultaneous tubal pregnancies have been reported in natural cycles, recently, after ovulation induction, in-vitro fertilization2,3. The high incidence of ectopic pregnancy associated with IVF-ET continues to be a problem and frequencies of between 2.4 and 12.4% have been only a few reports of simultaneous bilateral tubal pregnancies following IVF-ET4. This paper describes a case of a simultaneous bilateral tubal pregnancy after IVF-ET in a 33 year old patient. The diagnosis was confirmed by diagnostic laparoscopy performed 25 days after embryo transfer(sixth week of gestation), which revealed bilateral tubal pregnancy. Bilateral salpingectomy was performed. With a review of the literature on this topic, diagnostic aspects and treatment options are discussed.

韓國現代女流詩史 硏究序說 : 고대 女流詩歌觀의 전승맥락을 중심으로

金囍喆 대불대학교 2003 大佛大學校大學院 硏究論文集 Vol.2 No.1

일반화지수분포와 지수화 지수분포를 이용한 유한고장 소프트웨어 신뢰성장 모형에 관한 비교 연구

김희철 남서울대학교 2007 남서울대학교 논문집 Vol.13 No.4

Finite failure NHPP models presented in the literature exhibit either constant, monotonic increasing or monotonic decreasing failure occurrence rates per fault. In this paper, Goel‘s generalized and the exponentiated exponential distribution reliability model which maked out efficiency substituted for Gamma and weibull model (2 parameter shape illustrated by Gupta and Kundu ) was reviewed. Algorithm to estimate the parameters used to maximum likelihood estimator and bisection method, model selection based on SSE for the sake of efficient model, was employed. Analysis of failure using real data set for the sake of proposing shape parameter of the generalized exponential distribution and the exponentiated exponential distribution reliability model was employed. Key words : exponentiated exponential distribution, NHPP, SSE

지수가중이동평균관리도를 이용한 제조공정관리 실증분석

김희철 남서울대학교 2008 남서울대학교 논문집 Vol.14 No.2

From the subdivision of this quality process analysis, basic plan needs the side of the quality control. In this paper, we discuss process analysis using exponentially weighted moving average chart. In advance, setting the level of quality, the weight selected and determine the management changes using the exponentially weighted moving average chart. Weight to the quality of pre-conditions for the exponentially weighted moving average chart for the official results shall determine the change serious situation occurs outside the lower limit or upper limit, About that time, quality error look to claim, believe a new quality to be applied.Key Words : Exponentially Weighted Moving Average Chart, Manufacturing Process Management data, Process Analysis.

[사례연구 : 상법] 이사의 선관주의의무 및 충실의무, 경영판단의 원칙간의 관계 정리

김희철 고시계사 2013 考試界 Vol.58 No.11

민감도 분석을 이용한 로그 포아송 실행 시간 소프트웨어 모형에 대한 최적방출시기에 관한 분석

김희철 남서울대학교 2009 남서울대학교 논문집 Vol.15 No.1

It is of great practical interest to decide when to stop testing a software system in development phase and transfer it to the user. This decision problem called an optimal release policies. In this paper discussed to specify an optimal release policies. In this paper, propose an optimal release policies of Log Poission execution time model. In this paper, discuss optimal software release policies which minimize a total average software cost of development and maintenance under the constraint of satisfying a software reliability requirement. From Sensitivity Analysis, make out estimating software optimal release time. Key Words : Software Release Policies, Total Average Cost, Sensitivity Analysis

설문을 이용한 기업가 자질 특성 요인분석에 관한 연구

김희철 남서울대학교 2006 남서울대학교 논문집 Vol.12 No.-

The survey study on the influence factor Analysis of quality business elements for 500 university students carry out. In this survey, element of quality business(such as the desire, mind, social relations, communication, knowledge, decision making and a general idea, etc.,) is considered. The purpose of this study is to examine element of quality business and to investigate the important factors affected by that. The results have processed through the analysis are summarized as follows. First, the determinative variables, such as the communication, the a general idea, the readership, the utility expected for quality business have had a positive influence, but others elements have had a negative effected on that. Second, in factor analysis, power of explaining with 1 factor(a general idea, social relations, opportunity ,profit, readership) have had 37.5%, power of explaining with 2 factor( optimism, spirit of competition, communication) have had 18.8 %, the 3 factor(mind, desire) is 17.26%. This results suggest that main element with quality business is factors such the a general idea, social relations, opportunity, profit and readership

로그선형 학습효과에 근거한 소프트웨어 신뢰모형에 관한 통계적 공정관리 접근 방법 비교

김희철 남서울대학교 2014 남서울대학교 논문집 Vol.S No.-

There are many software reliability models that are based on the times of occurrences of errors in the debugging of software. Software error detection techniques known in advance, but influencing factors for considering the errors found automatically and learning factors, by prior experience, to find precisely the error factor setting up the testing manager are presented comparing the problem. It is shown that it is possible to do asymptotic likelihood inference for software reliability models based on finite failure model and non-homogeneous Poisson Processes (NHPP). For someone making a decision about when to market software, the conditional failure rate is an important variables. The finite failure model are used in a wide variety of practical situations. Their use in characterization problems, detection of outlier, linear estimation, study of system reliability, life-testing, survival analysis, data compression and many other fields can be seen from the many study. Statistical process control (SPC) can monitor the forecasting of software failure and thereby contribute significantly to the improvement of software reliability. Control charts are widely used for software process control in the software industry. In this paper, proposed a control mechanism based on NHPP using mean value function of log linear learning effects property. Key Words : Learning Effects, Non-Homogeneous Poisson Process, Statistical Process Control.

유한고장 지수화 지수 분포 NHPP 소프트웨어 신뢰성장 모형에 관한 연구

김희철 남서울대학교 2006 남서울대학교 논문집 Vol.12 No.-

Finite failure NHPP models presented in the literature exhibit either constant, monotonic increasing or monotonic decreasing failure occurrence rates per fault. In this paper, Goel-Okumoto and Yamada-Ohba-Osaki model was reviewed, proposes the exponentiated exponential distribution reliability model, which maked out efficiency substituted for Gamma and weibull model (2 parameter shape illustrated by Gupta and Kundu) Algorithm to estimate the parameters used to maximum likelihood estimator and bisection method, model selection based on SSE, AIC statistics and Kolmogorov distance, for the sake of efficient model, was employed. Analysis of failure using simulated data set for the sake of proposing shape parameter of the exponentiated exponential distribution was employed. This analysis of failure data compared with the exponentiated exponential distribution model and the existing model using arithmetic and Laplace trend tests, bias tests is presented.

개인 학교 환경 특성에 대한 학교생활 만족도 분석 : -산업경영공학 전공자 중심으로-

김희철 남서울대학교 2009 남서울대학교 논문집 Vol.15 No.2

The purpose of the study is to investigate about the satisfaction of school life on personal school environment for the Industrial & Management Engineering Majors. This study summarizes the results obtained through the following contents. First, variable of department's position gives satisfaction about school life. Second, interaction with professors and seniority level exchanges with satisfaction enough to keep the school has been functioning as an important factor. Third, distance of school bus, hours of school and get credit are affecting the school life, but will not significant factors that are important. These results through the external promotion of our department and the department needed more and more active student government and volunteer activities through the encounters and exchanges between seniors and juniors are required to actively Key Words : satisfaction of school life , Personal school environment, significant factor