금형제품의 형상안내형 자동면취기 개발

임재학(J.H. Lim),박기범(K.B. Park),황종대(J.D. Hwang),정윤교(Y. G. Jung),조성림(S.L. Cho) 한국정밀공학회 2009 한국정밀공학회 학술발표대회 논문집 Vol.2009 No.6월

정규분포와 대수정규분포에서의 고장률 보증시험 샘플링 계획

임재학(Jae-Hak Lim),김준홍(Jun Hong Kim),윤원영(Won Yong Yun),이종문(Jong Moon Lee) 한국신뢰성학회 2004 신뢰성응용연구 Vol.4 No.1

Doppler velocimetry abnormality in preeclampsia, related to severity & gestational weeks at examination

임재학 ( Jae Hak Lim ),( Seung Chul Lim ),( Jin Dong Jeon ),( Young Han Kim ),( Yong Won Park ) 대한산부인과학회 2006 대한산부인과학회 학술대회 Vol.92 No.-

북한의 사회통제력과 산림황폐화

임재학(Lim, Jae-Hak) 경북대학교 사회과학연구원 2011 사회과학 담론과 정책 Vol.4 No.1

북한의 사회통제력과 산림황폐화 사이에는 어떠한 상관관계가 있는가? 이에 대해 네 가지 문제제기가 가능하다. 첫째, 북한의 사회통제력이 제대로 작동하고 있는 동안에는 북한의 산림이 황폐화되지 않았는가? 둘째, 북한의 사회통제력이 제대로 작동하고 있는 동안에도 북한의 산림이 황폐화하기 시작했는가? 셋째, 북한체제의 사회통제력이 약화되면서 북한의 산림이 훼손되었는가? 넷째, 북한의 사회통제력이 약화된 상황에서도 북한의 산림이 회복된 적이 있었는가? 본 연구는 이 네 가지 문제제기를 바탕으로 북한의 산림황폐화와 사회통제력의 상관관계를 분석하였으며 그 결과는 다음과 같다. 첫째, 해방 이후부터 1960년대까지 북한의 사회통제력 수준이 높았던 시기였고, 자력갱생 경제정책을 추진하는 데 주민을 총동원할 수 있었기 때문에 북한의 산림정책도 성공을 거둘 수 있었다. 둘째, 1970∼80년대는 1972년 헌법에 주체사상이 지도이념으로 등장하면서 사회통제가 이전의 수준보다 강화된 시기이다. 그러나 경제난과 식량난이 대두하며, 북한은 산림을 훼손하면서까지 식량난을 해결하기 위해 힘쓴다. 셋째, 동구 사회주의권이 해체되고 북한의 경제난과 식량난이 심화되면서, 북한의 사회통제력이 약화되고, 사회적 일탈현상이 일어난다. 이러한 상황에서 북한의 산림은 관리 불가능의 상태에 놓인다. 넷째, 북한은 사회통제력을 회복하기 위해 ‘선군정치’를 통해 군(軍)이 사회통제의 주축세력으로 등장한다. 또한 2000년부터 산림조성사업을 적극 추진하고, 2007년 ‘7.1조치’를 통해 경제개혁정책을 추진한다. 그러나 최근의 지표에 의하면 북한의 산림은 이전에 비해 더 황폐화 된 것으로 보인다. Is there any correlation between social control and forest devastation in North Korea? Four hypotheses can be set for this question. First, did North Korea have dense forests while social control was working properly? Second, did deforestation begin in North Korea while social control was working properly? Third, did damage of forests increase as North Korea began to lose social control? Fourth, is there any indication of reforestation while North Korea has had weak social control? Based on these four hypotheses, this study analyzes the correlation between social control and forest devastation in North Korea. The correlations can be described over four policy periods in North Korea. First, the level of social control was high from the liberation to the 1960s in North Korea. During this period, it was possible to mobilize the people for the promotion of self-reliance economic policy, and North Korea was successful in its forest policy. Second, during the 1970s and 80s, the Juche Idea emerged, starting as a guideline in the 1972 Constitution, and the level of social control increased compared to the previous period. However, North Korea chose forest clearing to solve economic difficulties and food shortages. Third, the collapse of socialism in Eastern Europe and the deepening of economic difficulties and food shortages have led to weakened social control in North Korea. Since these developments, forests have been left out of control. Fourth, the military emerged as a key force for social control through the military-first policy from the late 1990s. Thereafter, North Korea drove through economic reforms and a forest restoration program. However, the recent indicators show the forest to be more devastated than in the past.

중고제품의 보증과 보전정책에 대한 최근 연구 동향

임재학(Jae-Hak Lim) 한국신뢰성학회 2017 신뢰성응용연구 Vol.17 No.2

Purpose: The purpose of this research is to study research trend in the field of warranty and maintenance policy of second-hand products. Methods: To this end, we consider research articles, which deal with warranty and maintenance of the second-hand products, published on journals during the past 20 years and classify them by taxonomy scheme proposed by Shafiee and Chukova (2013). The taxonomy scheme consists of three maintenance models in warranty for second-hand product. In each models, we analyze proposed maintenance and warranty policies with respect to types of upgrade models, types of preventive maintenances, decision variables and decision criteria model. Results: We obtain the scheme of maintenance and warranty of the second-hand products and define cost related to warranty and maintenance of the second-hand item. Also, we summarize the characteristics of maintenance and warranty policies in each classified model. Conclusion: There have been several research reviews on maintenance and warranty polity of new products. This research surveys researches of authors during the past 20 years and classifies, summarizes and compares proposed maintenance and warranty policies of the second-hand products. This research provides useful information to researchers who are interested in maintenance and warranty of the second-hand products.

Clinical application of integrated [18F] fluorodeoxyglucose positron emission tomography & computed tomography in the diagnosis of ovarian tumor on the basis of ultrasonographic findings

임재학 ( Jae Hak Lim ),( Han Sung Hwang ),( Young Tae Kim ),( Sung Hoon Kim ),( Sang Wun Kim ),( Young Han Kim ),( Yong Won Park ) 대한산부인과학회 2006 대한산부인과학회 학술대회 Vol.92 No.-

The Estimation of the Coverage Probability in a Redundant System with a Control Module

Jae-Hak Lim(임재학) 한국산업정보학회 2007 한국산업정보학회논문지 Vol.12 No.1

자궁선종을 동반한 자궁근종에서 자궁동맥 색전술을 이용한 치료의 효과

장진범,배상욱,임재학,이도연,김정연,정경아,김세광,박기현,Jang, Jin-Beum,Bai, Sang-Wook,Lim, Jae-Hak,Lee, Do-Yeon,Kim, Jung-Yeon,Jeong, Kyung-Ah,Kim, Sei-Kwang,Park, Ki-Hyun 대한생식의학회 2001 Clinical and Experimental Reproductive Medicine Vol.28 No.3

Objective: The purpose of this study was to make a guideline of uterine artery embolization for the treatment of uterine leiomyomas accompanying with adenomyosis in Korea. Materials and Methods : We performed the retrospective study for 37 women who had uterine leiomyomas accompanying with adenomyosis. Bilateral uterine artery embolization was performed in 37 patients (age range 25-65) during 17 months with pain, hypermenorrhea, urinary frequency etc due to leiomyomas. Ultrasound imaging was performed before the procedure and at mean 6.9 months after the procedure. Results: All procedures were technically successful. Mean clinical follow-up was 12.8 months. Minor complication occurred in 82% patients after the procedure. After imaging follow-up (mean, 6.9 months postprocedure), median uterine volume decreased 34.4%, and dominant myoma volume decreased 86%. There was no statistical difference in uterine volume reduction and dominant myoma size reduction whether occluding agents was polyvinyl alcohol, polyvinyl alcohol plus gelfoam, and gelfoam, and whether ultrasound measured Resistance Index value before the procedure was low or high. Conclusion: Primary candidates for uterine artery embolization include those with symptomatic uterine leiomyomas who no longer des ire fertility but wish to avoid surgery or are poor surgical risks. To our study, uterine volume reduction and dominant myoma size reduction in patients who had adenomyosis were similar to previous other studies in patients who had not adenomyosis. Therefore adenomyosis should not be considered as a contraindication for uterine artery embolization. Because there is little data about subsequent reproductive potential after this procedure, it should not be routinely advocated for infertile women. Further investigation is warranted for occluding agents and Resistance Index.

중점관리 고장모드 식별을 위한 소프트웨어 고장모드 및 영향 분석

정준홍(Junhong Jung),임재학(Jae-Hak Lim) 한국신뢰성학회 2020 신뢰성응용연구 Vol.20 No.4

Purpose: In the present age of information technology, apart from software size, the proportion of software in systems has increased in most of industries. Hence, software-related system failures have attracted the attention of engineers. The objective of this study was to develop a failure mode and effect analysis (FMEA) procedure for identifying critical failure modes of software. Methods: We modified the software FMEA procedure of Neufelder [1] by deleting unnecessary steps and introducing new methods for assessing the severity and likelihood of occurrence and detection of failure modes of software. We applied the developed FMEA procedure to the user authentication module of a public service system that is part of the e-government system. Result: We propose a software FMEA procedure that can be used for developing or modifying software applications. The proposed procedure is effective in identifying critical failure modes of software. Conclusion: We propose a new software FMEA procedure that can be used for managing the reliability of software under development and applied it to the user authentication module of a public service system that is part of the e-government system.

회계정보시스템의 품질요인이 경영성과에 미치는 영향

이하진(Lee Ha-Jin),임재학(Lim Jae-Hak) 한국산업정보학회 2018 한국산업정보학회논문지 Vol.23 No.2

본 연구에서는 기업의 의사결정에 필요한 회계정보를 산출하는 회계정보시스템의 품질이 기업의 경영성과에 미치는 영향뿐만 아니라 교육성과와 사용자 만족도가 회계정보시스템의 품질과 경영성과의 영향관계에서 매개변수의 역할을 하는지 알아보기 위한 실증연구를 수행하였다. 이를 위하여 회계정보시스템과 경영성과의 영향관계 뿐만 아니라 교육성과와 사용자 만족도의 매개효과를 검증할 수 있는 연구모형을 수립하였으며 이를 바탕으로 연구가설을 수립하였다. 연구가설을 검증하기 위하여 기업의 회계정보시스템 이용자들을 대상으로 설문조사를 실시하고 수집된 자료를 바탕으로 분석을 실시하였다. 설문자료를 바탕으로 실증분석을 수행한 결과를 요약해 보면 다음과 같다. 첫째, 정보시스템의 품질은 교육성과와 사용자 만족도에는 긍정적인 영향을 미치는 것으로 나타난 반면, 경영성과에는 유의한 영향을 미치지 못하는 것으로 나타났다. 둘째, 정보시스템 품질이 경영성과에 미치는 영향관계에 있어서 사용자 만족도와 교육성과는 매개역할을 하는 것으로 나타났다. 이러한 결과는 회계정보시스템이 기업의 경영성과에 기여하기 위해서는 실제 업무를 담당하고 있는 담당자에 대한 체계적인 교육이 필요하며 또한 사용자들의 만족도를 제고할 수 있도록 정보시스템 품질을 지속적으로 관리할 필요가 있다는 것을 보여주고 있다. In this study, empirical studies are conducted not only to investigate the effect of the quality of accounting information system on management performance but also to study whether user satisfaction and education training achievement play a mediating role in the relationship between the quality factors of accounting information system and management performance. To this end, a research model is established to verify the mediating effects of user satisfaction and education training achievement as well as the effect of the quality of accounting information system on management performance. We conduct a questionnaire survey on users of accounting information system of companies. The results of the empirical analysis based on the survey data are summarized as follows. First, the quality of information system has a positive effect on educational performance and user satisfaction, but not on business performance. Second, user satisfaction and education training performance play a mediating role in the relationship between the quality of information system and management performance. The results of our research show that it is necessary to educate and to train the employees in order to make the accounting information systeme to contribute management performance and to control continuously the quality of the information system in order to improve user satisfaction.