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이연선,김남,박성균,임종태,Lee, Yeon-Seon,Kim, Nam,Park, Seong-Gyoon,Ihm, Jong-Tae 대한전자공학회 1996 전자공학회논문지-A Vol.33 No.3
Diffraction gratings were designed to generate multiple beams for the real-time optical interconnection in free-space using a liquid crsytal television. Multi-level phase gratings consisted of stepped phase value, 0 to 2$\pi$, and generate a 5$\times$5 spot array, and V-shaped spot patterns which have a maximum diffraction efficiency of 78.84%. Simulated annealing technique was used to determine phase states of each pixel having uniform intensity and high diffraction efficiency. Through the optical interconnection experiments, we compared the diffraction characteristics of beam paterns obtained by binary-level, four-level, and eight-level phase gratings.
침자 술기 실습 모델에서 침감의 정량적 특성에 관한 연구
이연선 ( Yeon Sun Lee ),김선혜 ( Seon Hye Kim ),김은정 ( Eun Jung Kim ),이승덕 ( Seung Deok Lee ),김경호 ( Kyung Ho Kim ),김갑성 ( Kap Sung Kim ),정찬영 ( Chan Yung Jung ) 경락경혈학회 2018 Korean Journal of Acupuncture Vol.35 No.3
Objectives : In this study, we quantitatively evaluated the needle forces using needle insertion-measurement system and compared the needle sensation of each acupuncture practical model. Methods : After inserting acupuncture with a sensor to six models, a lifting-thrusting motion was implemented using the needle insertion-measurement system. The needle force was measured repeatedly, and the measurement was analyzed based on the modified Karnopp friction model for a comparison of friction coefficients. After the insertion, practitioners did lifting-thrusting manipulations. They quantified the similarity of needle sensation with VAS (Visual Analogue Scale). Results : When friction force and coefficients of friction in five different models were compared with a porcine shank model, all five models were significantly different from a porcine shank model, cotton and apple showing the closest frictional values to that of a porcine shank model. In the Cp and Cn values of cotton and in the Cp values of IM injection pad, there was no statistically significant difference. The similarity of the needle sensation between the porcine shank and five models was the highest in the apple, and overlapping papers was the lowest. Conclusions : This study quantitatively compared the physical forces in the practical model when implementing lifting-thrusting manipulations, using a needle insertion-measurement system. We suggest that a reproducible exercise model that reflects the characteristics of various human tissues, such as viscoelasticity or strength, needs to be further developed. This will contribute to establishing standardized acupuncture practice training.
뇌전이암 진단을 위한 제한적 뇌 자기공명영상의 유용성에 관한 연구
권선중 ( Kwon Seon Jung ),이연선 ( Lee Yeon Seon ),안진영 ( An Jin Yeong ),박희선 ( Park Hui Seon ),정성수 ( Jeong Seong Su ),김주옥 ( Kim Ju Og ),김진환 ( Kim Jin Hwan ),송창준 ( Song Chang Jun ),김선영 ( Kim Seon Yeong ) 대한결핵 및 호흡기학회 2003 Tuberculosis and Respiratory Diseases Vol.55 No.5
윤진선,이연선,김남,엄주욱,박한규,Yeun, Jin-Seon,Lee, Yeon-Seon,Kim, Nam,Um, Joo-Uk,Park, Han-Kyu 한국통신학회 1996 韓國通信學會論文誌 Vol.21 No.4
In this paper, multiplhase only filter(MPOFs) are designed using simulated annealing algorithm. These filters have excellent recognition characteristics for similar patterns or rotated patterns and enhance optical efficiency as well as spatial-bandwidth product by deleting mirror image. As the result of computer simulation to certify recogntion characteristics of similar patterns, simulated annealing-MPOF(SA-MPOF) has superior discrimination and higher correlation peak values than cosine binary phase only filters(CBPOF) and simpulated annealing-BPOF (SA-BPOF). THe filter having training process for rotated patterns of arbitraty possible angle can overcome that phase only filter(POF) and CBPOF can't recognize rotated input patterns.
방사선 치료를 시행 받은 폐암 환자에서 방사선 폐렴의 발생에 관한 예측 인자
안진영 ( An Jin Yeong ),이연선 ( Lee Yeon Seon ),권선중 ( Kwon Seon Jung ),박희선 ( Park Hui Seon ),정성수 ( Jeong Seong Su ),김진환 ( Kim Jin Hwan ),김주옥 ( Kim Ju Og ),조문준 ( Jo Mun Jun ),김선영 ( Kim Seon Yeong ) 대한결핵 및 호흡기학회 2004 Tuberculosis and Respiratory Diseases Vol.56 No.1
시청각자료를 이용한 환자교육이 대장내시경 검사에 미치는 영향
최경희 ( Kyeong Hee Choi ),이태훈 ( Tae Hoon Lee ),이석호 ( Suck-ho Lee ),이효진 ( Hyo Jin Lee ),김은옥 ( Eun Ok Kim ),장지은 ( Ji Eun Jang ),이연선 ( Yeon Seon Lee ),정명순 ( Myeong Sun Jeong ),박숙자 ( Suk Ja Park ),최은하 ( Eun 대한장연구학회 2007 Intestinal Research Vol.5 No.1
Background/Aims: The purpose of this study is to investigate how effectively audiovisual aids education can improve patients``bowel preparation and their satisfaction during colonoscopic examination. Methods: The control group consisted of 116 patients and the experimental group consisted of 109 patients. The control group was given the existing test guidebooks and the experimental group was offered audiovisual aids education immediately before the test. After the test, the patients assessed. Results: In regard to the organization and consistency of colonoscopic education, the experimental group showed a statistically significant score (p=0.000). In regard to satisfaction with the colonoscopy, the average score of the control group was 7.50±2.02, while that of the experimental group was 8.63±1.76 (p=0.000). In regard to bowel preparation, the experimental group showed a statistically meaningful score compared to that of the control group (p=0.002). In terms of examination time comparison, the experimental group returned a statistically meaningful score (p=0.005). In regard to the nurses`` task satisfaction, according to the information offered, the experimental group showed a statistically significant score (8.47±1.32) compared to the control group (6.49±2.23)(p=0.000). Conclusions: The audiovisual aids education enhanced the patients`` satisfaction. Therefore these aids are worth incorporating within nursing methods. (Intest Res 2007;5:52-59)