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크래시된 이미지와 딥 클러스터링을 통한 크래시 분류 개선
김요한 ( Yo-han Kim ),이상준 ( Sang-jun Lee ) 한국정보처리학회 2019 한국정보처리학회 학술대회논문집 Vol.26 No.2
소프트웨어 크래시 분류를 개선하기 위해 호출 스택 정보를 기반한 많은 연구들이 있다. 본 연구에서는 크래시 직전 이미지를 수집하여, 기존 호출 스택 기반의 분류에서 발생하는 문제를 개선하고자 한다. 또한 이미지 자체의 직관성으로 개발자뿐만 아니라 개발 지식이 없는 실무자도 크래시 정보를 활용할 수 있고, 문제 해결을 위한 재현 루트 파악, 위변조 여부와 같은 추가 정보를 확인할 수 있을 것으로 기대한다. 비지도 학습 기반인 딥러닝 클러스터링 N2D 알고리즘을 통하여 이미지를 자동 분류하고 순위화하는 시스템을 구축하여, 특정 소프트웨어에 특화되지 않고 다양한 소프트웨어의 크래시 이미지 자동 분류에 기여할 수 있을 것으로 기대한다.
김해도,이광야,박종윤,한국헌,임형창,Kim, Hae Do,Lee, Kwang Ya,Park, Jong Yoon,Han, Guk Heon,Lim, Heung Chang 한국관개배수위원회 2012 한국관개배수논문집 Vol.19 No.1
The aim of this study was to analyze the operation plan for heightened agricultural reservoir, in terms of water supply to downstream paddy fields and instreams. Operation of agricultural reservoir before the heightened reservoir project is easy to manage because of its single purpose, which is irrigation water supply. However, after proceeding the heightened project, there is needed to be set the operation rule because of its multiple purpose, which is water for irrigation and supply to the stream. In this paper, propose the method of design the criteria of supply to the stream and operation rule curve for the heightened reservoir. According to simulation results by proposed operating rule for the Gumsa reservoir, the yearly amount of water supply to the stream can be 2,588 thousand $m^3$, 3 times of the heightened space (2,588 thousand $m^3$).
절제 불가능한 4기 위암에서 예방적 위 공장 우회술의 의의
김환수,김종석,김종한,목영재,박성수,박성흠,장유진,김승주,Kim, Hwan-Soo,Kim, Chong-Suk,Kim, Jong-Han,Mok, Young-Jae,Park, Sung-Soo,Park, Seong-Heum,Jang, You-Jin,Kim, Seung-Joo 대한위암학회 2009 대한위암학회지 Vol.9 No.4
목적: 진행성 위암 중 수술 소견에서 복강 내 원격전이가 존재하거나 주위 장기에 침윤이 심하여 절제가 불가능한 경우에 위 배출구 폐색을 동반하지 않더라도 예방적 위공장 우회술을 시행하는 경우가 있어, 단순 개복술 시행과 비교하여 그 의의를 알고자 하였다. 대상 및 방법: 1984년부터 2007년까지 고려대학교 의료원에서 수술을 시행 받은 진행성 위암 환자 중 위 배출구 폐색이 없고 절제 불가능한 4기 위암 환자 167예를 대상으로, 후향적 방법을 이용하여 임상병리학적 특성 및 치료성적, 그리고 예후 인자 분석을 시행하였다. 결과: 위 공장 우회술을 시행과 단순 개복술 시행을 비교한 결과, 나이, 성별, 간 전이 여부, 술 후 재원일, 재입원 횟수에서는 유의한 차이를 없었지만, 병소의 위치(P$\leq$0.014), 복막 파종(P=0.001)에서는 유의한 차이를 보였다. 예후 인자 분석에서는 위 공장 우회술을 시행한 군의 생존기간이 1~35.7개월(6.3개월), 시행하지 않은 군이 1~33.4개월(median 4.3개월)로 유의한 차이가 있었으며(P=0.031), 복막전이가 있는 경우 1~31.0개월(median 3.4개월), 없는 경우 1~33.3개월(median 5.8개월)로 유의한 차이를 보였다(P<0.001). 다변량 분석을 통한 독립적 예후 인자로는 복막 전이 여부만이 의미가 있었다(P=0.002). 결론: 절제 불가능한 4기 위암 환자에서 폐색 증상이 없는 경우, 예방적 위 공장 우회술은 생존기간의 연장에서 큰 의의를 가지지 못하는 것으로 생각한다. Purpose: The aim of this study was to evaluate the significance of palliative gastrojejunostomy for treating patients with unresectable stage IV gastric cancer, and as compared with laparotomy for treating patients with incurable gastric cancer. Materials and Methods: We retrospectively studied 167 patients who could not undergo resection without obstruction at Korea University Hospital from 1984 to 2007. They were classified into two groups, one that underwent palliative gastrojejnostomy (the bypass group, n=62) and one that underwent explo-laparotomy (the O&C group, n=105), and the clinical data and operative outcomes were compared according to the groups. Results: For the clinical characteristics, there were no differences of age, gender and liver metastasis between the bypass group and the explo-laparotomy group, but there was a significant different for the presence of peritoneal metastasis (P=0.001). There was no difference between two groups for the postoperative mortality and morbidity. For the postoperative outcomes, the duration of the hospital stay (29.25 vs 16.67) and the frequency of re-admission were not different, but the median overall survival (4.3 months vs. 3.4 months, respectively) was significantly different. By multivariate analysis, the presence of peritoneal metastasis was identified as the independent prognostic factor for incurable gastric cancer. Conclusion: A prophylactic bypass procedure is not effective for improving the quality of life and prolonging the life expectancy of unresectable stage IV gastric cancer patients without obstruction.
휴대폰 후면 커버의 공정시간 단축에 따른 치수 편차의 최적화에 관한 연구
김주권(Joo-Kwon Kim),김종선(Jong-Sun Kim),이준한(Jun-Han Lee),곽재섭(Jae-Seob Kwak) 한국기계가공학회 2017 한국기계가공학회지 Vol.16 No.6
In this study, we investigated the optimization of process conditions by using the Six Sigma process, design of experiment (DOE) method and response surface method (RSM) to resolve dimensional deviation and appearance problems arising from the shortened process time of the mobile phone rear cover. The analysis of the trivial many was performed by 2-sample T-test and cooling time, and mold temperature and packing pressure were selected as the vital fews affecting the overall width of the product. The optimal conditions of the process were then studied using the DOE and the RSM. We analyzed the improvement effects by applying the selected optimal conditions to the production process and the results showed that the difference between the mean value and target value of the overall width stood at 0.01 mm, an improvement of 88.89% compared to current process that fell within the range of standard dimension. The short-term process capability stood at 4.77σ, which implied an excellent technology level despite a decrease by 0.22σ compared to the current process. The difference in process capability decreased by 2.44σ to 0.41σ, showing a significant improvement in management capability. Ultimately, the process time of the product was shortened from 18.3 seconds in the current process to 13.65 seconds, resulting in a 34.07% improvement in production yield.
이단교주 인간 `보혜사`에 대한 비판적 고찰 (신천지 중심으로)
김종한 ( Jong Han Kim ) 한국복음주의역사신학회 2012 역사신학 논총 Vol.24 No.-
This study explores and critiques the so-called doctrine of `Human Paraclete` advocated by heretics in Korea as it relates to the Temple of the Tabernacle of the Testimony (Shinchonji). The study demonstrates that the doctrine is heretical and does not have any biblical basis. Today Christians in Korea have been increasingly seduced into a heretical persistence of the Human Paraclete. The Korean church, however, has not worked out a proper countermeasure against it. In this environment, this study serves to press to maintain the holiness of the church and effectively carry out missionary work for the world. The focus lies in an apologetic concern, rather than a theological controversy against the heresy. This study deals with the heretics` persistence with the following momentums. Firstly, it is doubted that a human being can be a Paraclete, to be served as a Savior. Secondly, the church has to protect its holy integrity from the challenge of heresy. Thirdly, unsound Holy Spirit movements and immoral behaviors of heresy are big obstacles to evangelism in the Korean church. Fourthly, the Korean church has been deprived of human resources due to heresy. After an introduction in chapter one which presents the purpose and method of study, chapter two analyzes the doctrine of `Human Paraclete`, and argues that it conflicts with biblical truth. For Shinchonji, the Paraclete has come into the world in a human form. This is justified by the assertion that its founder has received the direct revelation of God. However, it is argued that this does not have any biblical validity. Chapter three clarifies theologically the qualifications of Paraclete. This is designed to make clear that the doctrine of `Human Paraclete`, advocated by Shinchonji, is fabricated. It firstly deals with the divine nature, attributes, and works of Paraclete, then discusses the qualifications of Paraclete in terms of the intercession between God and humans. It is emphasized that these qualifications are required for the authority of Paraclete and for the consistency and effectiveness of his ministry before God. Chapter four sums up the whole discussion of the doctrine of `Human Paraclete` and suggests points for further constructive study.
ASTM Gr.92강의 미세조직 및 기계적 성질에 미치는 템퍼링 온도 및 열처리경로의 영향
김연근 ( Yeon Keun Kim ),한창희 ( Chang Hee Han ),백종혁 ( Jong Hyuk Baek ),김성호 ( Sung Ho Kim ),이찬복 ( Chan Bock Lee ),홍순익 ( Sun Ig Hong ) 대한금속·재료학회 2010 대한금속·재료학회지 Vol.48 No.1
In order to investigate the effects of tempering temperature and heat-treatment path on the microstructural and mechanical properties of ASTM Gr.92 steels, foul samples with different tempering temperatures and heat-treatment paths were prepared. Three experimental steels showed tempered martensitic microstructures. but the sample tempered at 8l0℃ was presumed to retain partially untempered martensitic microstructures due to a lower α+γ phase regime. M23C6. V(C,N), and Nb(C.N) precipitates were observed in all samples. In addition, Cr2N was observed to be precipitated finely and uniformly by isothermal heat-treatment. The lath width and precipitate size increased with an increase of the tempering temperature. In particular, the lath width and precipitate size in the isothermal heat-treated samples were much smaller than those of the tempered-only specimens. Because of a fine and uniform precipitate, a reduction of lath width would enhance precipitation hardening, and it was shown that mechanical propertiesincluding the hardness and tensile properties of the steels were improved by isothermal heat-treatment.