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GMA 용접공정을 이용한 오픈갭 수평고정관 초층 용접의 실험적 연구
김지선,김일수,박창언,나현호,이지혜,정성명,Kim, Ji-Sun,Kim, Ill-Soo,Park, Chang-Eun,Na, Hyun-Ho,Lee, Ji-Hye,Jung, Seong-Myeong 대한용접접합학회 2011 대한용접·접합학회지 Vol.29 No.3
Since welding process for most pipelines with large diameter has been carried out by the manual process, automation of the welding process is necessary for the sake of consistent weld quality and improvement in productivity. Therefore the development of the optimized algorithm to decide the welding condition is an effective technique to prove the feasibility of interface standards and intelligent control technology to increase productivity and reduce the cost of system integration. In this study, the pipe welding experiment has been carried out using plused GMA welding process to select optimal welding condition. And necessary information in root-pass welding has been obtained by applying in the pipeline using the selected welding conditions through the welding experiment.
물리치료학과 학생들의 임상실습 중 대인관계에 대한 연구
김지선,장은미,전혜진,최영은,안덕현,김용권,Kim, Ji-Sun,Jang, Eun-Mi,Jun, Hae-Jin,Choi, Young-Eun,Ahn, Duck-Hyun,Kim, Yong-Kwon 대한물리치료과학회 2003 대한물리치료과학회지 Vol.10 No.2
The purpose of this study was to provide information for making positive interpersonal relations by understanding the degree of difficulties of interpersonal relations that physical therapist students may have on clinical practice. The survey results of 175 students who completed clinical practice for the first term of 2003. The survey was conducted through mail or e-mail between July 20 and August 20, 2003. The data were analyzed frequency, percentage, t-test, and one-way ANOVA using the SPSS/PC Ver. 10.0 (${\alpha}=0.05$). The results were as follows; 1. The mean score for the level of points interpersonal relations was 41.06 points in full 80 points. Therefore most students had a little problem on interpersonal relations. 2. More difficulties of interpersonal relations were felt by students in the following order; clinical instructors, patients, other students, and other department staffs in the hospital. 3. Between students and clinical physical therapist in the hospital, most students were satisfied with a instructor's attitude toward there (61.1%). 4. Between students and other department staffs in the hospital, most students were felt convenient when faced with other staffs(61.8%). 5. Between students and patients in the hospital, most students didn't uncomfortable when they made a rapport(69.2%). 6. Between students and other college students, most students were didn't inconvenient when they were practicing together(69.8%). 7. The students with higher marks in major felt more difficulties for forming personal relations with other department staffs in hospital, patient, and other students(p<0.05). 8. The students showed more felt inconveniences over 8 weeks practicing than below 7 weeks itperiods of clinical practice(p<0.05). 9. The number of practice place were significantly difference according to relation of patients, other college students(p<0.05). More less practice place were made difficult of interpersonal relations. The further studies would be made in viewpoints to clinical instructors, patients, students, others department staffs in the hospital so that we could compare our results with theirs.
GMA를 이용한 배관용접의 이면비드 형상예측에 관한 실험적 연구
김지선(Ji-Sun Kim),김일수(Ill-Soo Kim),나현호(Hyun-Ho Na),이지혜(Ji-Hye Lee) 한국생산제조학회 2011 한국생산제조학회지 Vol.20 No.1
In this study, a variety of welding experiments were carried out to optimize root-pass welding process using GMA process. Based on the experimental results, optimal welding conditions were selected after analyzing correlation between welding parameters and back-bead geometry. Then, effectiveness of empirical models developed was compared and analyzed, and optimized empirical models were finally developed for predicting back-bead by analyzing the main effect of each factor which affects back-bead geometry and their influence on interaction. Also, functions proper for expressing the surface of back-bead were selected using diverse quadratic functions, and back-bead geometry was visualized using empirical models developed and quadratic functions.
코어 안정화를 위한 운동의 효과 비교: 복부 드로우 인 기법, 최대 호기, 케겔 운동
김지선 ( Ji Seon Kim ),김양현 ( Yang Hyun Kim ),김은나 ( Eun Na Kim ),김채린 ( Chae Rin Kim ),서동권 ( Dong Kwon Seo ) 대한물리의학회 2016 대한물리의학회지 Vol.11 No.1
PURPOSE: There are several methods, such as the abdominal drawing-in maneuver (ADIM), maximal expiration (ME), and Kegel exercise, to strengthen the core muscles. However, to date no study has been conducted to compare the effects of the ADIM, ME, and Kegel exercise on the transverses abdominis (TrA), internal oblique (IO), external oblique (EO), and pelvic floor muscles (PFMs). The purpose of this study was to find out which of the three aforementioned exercises is most effective for contracting the core muscles. METHODS: The thickness of the TrA, IO, EO and PFMs was measured by ultrasonographic imaging during the ADIM, ME and Kegel exercise in 34 healthy participants. RESULTS: There was the significant difference between ADIM and Kegel exercise in the thickness of the TrA (p<0.05). There were the significant differences between ADIM and ME and between ME and Kegel exercise in the thickness of the IO and PFM (p<0.01). There was no significant activation in the thickness of the EO (p>0.05). Measurement reliability was assessed using intraclass correlation coefficients (ICC) and the standard error of measurement (SEM). An ICC value of >0.77 indicated that reliability measurements was good. CONCLUSION: Kegel exercise was the most effective exercise for the TrA and the PFM, and ME was the most effective exercise for the IO muscles.
자녀가 지각한 부모의 문제음주 경향성이 쇼핑중독 경향성에 미치는 영향
김지선(Ji-Sun Kim),현명호(Myoung-Ho Hyun),한은미(Eun-Mi Han),원현준(Hyun-Jun Won) 대한스트레스학회 2008 스트레스硏究 Vol.16 No.4
그동안 부모의 문제 음주가 자녀의 정서 및 행동에 미치는 영향에 대해 활발히 연구되어 왔다. 문제 음주자 가정에서 발생하는 역기능적 역동은 자녀에게 영향을 끼쳐 그들의 충동적 행동 및 정서적 문제를 야기했다. 본 연구에서는 문제 음주자 자녀의 충동 통제 장애로 발생하는 많은 문제 중 최근 대두되고 있는 충동적 쇼핑에 대해 살펴보고자 한다. 이와 더불어 문제 음주자 자녀의 정서 강도, 정서 표현 양가성과의 관계도 함께 살펴보아 문제 음주자 자녀의 쇼핑 중독 행동의 기전을 함께 살펴보고자 하였다. 연구 결과 부모의 문제 음주는 자녀의 쇼핑 중독, 정서 표현 양가 성과 상관이 있으며, 쇼핑 중독은 정서 변인인 정서표현 양가성과 정서강도와 상관이 있었다. 이러한 상관관계와 선행 연구를 기초로 하여 부모의 문제 음주가 쇼핑 중독에 미치는 경로를 탐색해 보았다. 부모의 문제 음주가 자녀의 쇼핑 중독에 영향을 미치는데 있어서 정서 표현 양가성의 매개 경로는 유의하지 않았다. 하지만, 정서 강도를 중재 변인으로 설정하여 중재된 매개 모형을 검증해본 결과, 정서 강도가 높은 경우 위의 경로 모델이 유의하게 나타났다. 본 연구는 부모의 문제 음주와 정서 강도가 상호 작용하여 정서 표현 양가성에 영향을 미치고, 이는 다시 쇼핑 중독을 예측하는 매개 경로가 유의함을 밝혔다. In these days, there are a lot of studies about the effect of perceived parental problem drinking on their children. Their dysfunctional dynamic influenced children"s impulsive behaviors. In this study, we investigated the effect of perceived parental problem drinking on children"s shopping addiction that is a kind of "Impulse control disorder". The result is the perceived parental problem drinking is correlated with children"s shopping addiction, ambivalence over emotional expressiveness and shopping addiction is correlated with ambivalence over emotional expressiveness and emotional intensity. Second, we analyzed the path through parental problem drinking to shopping addiction. In the path analysis, the mediation effect of ambivalence over emotional expressiveness is not significant. But we put the emotional intensity as moderate factor and we investigated again the path, in the higher emotional intensity group had significantly path. This finding allows better understanding on the perceived parental problem drinking and emotional intensity are interacted and then that interaction influence to children"s shopping addiction. (Korean J Str Res 2008;16:369∼377)