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어선용 고효율 시리즈 (KF 시리즈) 프로펠러에 대한 성능 연구
장진열(Jin-Yeol Jang),김문찬(Moon-Chan Kim),이원준(Won-Joon Lee),문원준(Won-Jun Mun),이창섭(Chang-Sup Lee),문일성(Il-sung Moon) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
The MAU series has been usually used for the fishing vessel's propeller, which has been improved in consideration of the efficiency as well as the cavitation point of view in PNU. The high efficiency standard series propeller(KF series) has been applied to the design of 52ton class fishing vessel's propeller in the previous study. The experimental study for the performance of the design propellers called KF series for 52ton class fishing vessel has been conducted with five cases in KORDI towing tank. The model tests have been carried out at different pitch ratio and expanded area ratio in comparison with the standard propeller to make the series chart. The KF series chart and the formula for performance expression will be completed on the basis of the experiment result.
장진현(Jin-Hyun Jang),김진우(Jin-Woo Kim),박성호(Sung-Ho Park),김명래(Myung-Rae Kim),김선종(Sun-Jong Kim) 대한구강악안면외과학회 2011 대한구강악안면외과학회지 Vol.37 No.4
Purpose: The aim of this study was to compare the estimated blood loss and determine the change in hemoglobin depending on the combination of each orthognathic surgery. Subjects and Methods: The subjects of this study were patients who underwent orthognathic surgery among those diagnosed with a dentofaical deformity in Mok-Dong hospital, Ewha Womans University from 2002 to 2009. One hundred patients (men - 36, women - 64, mean age of 24.5±4.6) participated in the study and were divided into four groups (group 1 - bilateral sagittal ramus osteotomy [BSSRO], group 2 - BSSRO+Genioplasty, group 3 - Lefort 1+BSSRO+genioplasty, group 4 - anterior segmental osteotomy on maxilla and mandible). A comparative study on the estimated blood loss (EBL), operation time, peri-operative changes in hemoglobin was performed using anesthesia records. The results were analyzed statistically using a Mann-Whitney U-test and Spearman’s Rho test - SPSS 12.0 (SPSS Inc. Chicago, IL, USA). Results: In group 1 (BSSRO), the mean EBL, operation time and change in hemoglobin was 394.43±52.69 ml, 184±42.33 minutes, and 1.43, respectively, In group 2 (BSSRO+genioplasty), it was 556.32±63.42 ml, 231±37.45 minutes, and 1.80, respectively. In group 3 (Lefort 1+BSSRO+Genioplasty), it was 820.55±105.54 ml, 320±15.41 minutes, and 2.73, respectively. In group 4 (segmental osteotomy), it was 1025.39±160.21 ml, 355±20.10 minutes, and 3.33, respectively. In particular, in group 3, significant differences were observed depending on the method of the orthognathic surgery. The mean EBL in a Lefort 1 osteotomy with advancement was only 687 ml, whereas Lefort 1 osteotomy with canting correction (992 ml), even impaction (764 ml), and posterior nasal spine impaction (100 ml) showed a much higher EBL. Conclusion: From these results, the EBL and peri-operation hemoglobin increased as treatment plans became more complicated and increasing operation time. Safe orthognathic surgery should be performed by applying proper autologous transfusion plans based on the average EBL of each orthognathic surgery type.
스마트폰 지속사용의도 결정 요인에 관한 연구: 사용자 경험 중심으로
장진철 ( Jin Cheul Jang ),성우철 ( Woo Chul Sung ),이문용 ( Mun Yong Yi ) (주)엘지씨엔에스(구 LGCNS 엔트루정보기술연구소) 2013 Entrue Journal of Information Technology Vol.12 No.1
국내 스마트폰 사용자 수는 이제 3,000만을 넘어섰다. 점점 시장이 성숙해 가면서 사용자의 이탈을 방지하기 위해서는 현존하는 사용자의 스마트폰 지속사용의도를 결정하는 요인들을 파악하여 지속사용의도를 강화시키는 방안을 강구하는 것이 중요한 이슈가 된다. 본 연구에서는 사용자 경험 만족에 영향을 주는 선행요인들(단말기 품질, 제조사 서비스 품질, 기대충족)과 사용자 경험 만족도가 어떻게 고객의 헌신도와 지속사용의도를 결정하는지를, 확장된 기대충족모델을 기반으로 가설을 세우고, 600명 이상의 국내 스마트폰 사용자의 응답을 대상으로 분석하여 검증한다. 또한 서로 다른 스마트폰의 특징별 사용자 경험 만족도와 지속사용의도를 비교한다. 연구의 결과는 스마트폰 사용자의 지속사용의도를 높이는 방안을 강구하는 데 유용한 가이드라인을 제공할 것으로 기대된다. The number of smart phone users in Korea has reached over 30 million. As the market gets mature, it becomes more cru-cial to identify the determinants of smart phone users` continuation intention and devise a way that can fortify it. In this study, we develop research hypotheses about how the antecedents of user experience satisfaction (phone quality, manufacturer ser-vice quality, and confirmation) influences brand loyalty and continuation intention via their effects on user experience satis-faction on the basis of an extended expectation-confirmation model, and test the hypotheses against the data collected from over 600 smart phone users in Korea. Further, we compare the levels of user experience satisfaction and continuation inten-tion across major properties of different smart phones. The findings of the study are expected to provide useful guidelines on devising a way to heighten the continuation intentions of smart phone users
어선용 고효율 시리즈 (KF 시리즈) 프로펠러에 대한 성능 연구
장진열(Jin-Yeol Jang),김문찬(Moon-Chan Kim),이원준(Won-Joon Lee),문원준(Won-Jun Mun),이창섭(Chang-Sup Lee),문일성(Il-sung Moon) 한국해양환경·에너지학회 2012 한국해양환경·에너지학회 학술대회논문집 Vol.2012 No.5
The MAU series has been usually used for the fishing vessel"s propeller, which has been improved in consideration of the efficiency as well as the cavitation point of view in PNU The high efficiency standard series propeller(KF series) has been applied to the design of 52ton class fishing vessel"s propeller in the previous study. The experimental study for the performance of the design propellers called KF series for 52ton class fishing vessel has been conducted with five cases in KORDI towing tank The model tests have been carried out at different pitch ratio and expanded area ratio in comparison with the standard propeller to make the series chart‘ The KF series chart and the formula for performance expression will be completed on the basis of the experiment result.
마음챙김 요가가 신체자각 및 정서자각, 정서표현, 정서조절에 미치는 영향
장진아(Jin-a Jang) 한국명상학회 2018 한국명상학회지 Vol.8 No.2
This study examined the effects that mindful yoga, which puts major emphasis on body awareness, exerted on body awareness and emotions. Study was an experimental research designed to see what effects mindful yoga had on body awareness, emotion recognition, emotion expression, and emotion regulation. The experimental group underwent mindful yoga for 8 weeks (twice a week, 70 minutes per session), and the control group was composed of the participants who took general yoga programs (twice a week, 60 minutes per session) at community center. The study analyzed the data from 34 persons (17 from experimental group and 17 from control group). For measurement, K-MAIA(Kim, Sim, & Cho, 2016), Trait Meta-Mood Scale(Lee & Lee, 1997), Emotional Expressiveness Scale(Han, 1997), and Emotional Regulation Scale(Im & Jang, 2003) were adopted. As a result, when compared to the control group, the experimental group which performed mindful yoga showed significant increase on the boundary in body awareness, emotion recognition, and emotion expression. As for subfactors, there was a significant increase in noticing subscale and mind-body connection awareness among subfactors of body awareness, and in the emotional perception subscale among subfactors of emotion recognition. And active way and support-seeking way among subfactors of emotion regulation increased significantly on the boundary. The study verified that mindful yoga could boost body awareness and had a positive effect on emotion recognition, emotion expression, and emotion regulation. 본 연구는 마음챙김 요가가 신체자각과 정서 기제에 어떠한 효과가 있는지를 탐구하기 위한 것이다. 마음챙김 요가가 신체자각에 긍정적인 영향을 미치는지를 검증하고, 정서관련 척도인 정서자각, 정서표현, 정서조절에도 긍정적인 영향을 미치는지를 검증하였다. 실험집단에는 8주간(주 2회, 70분/회)의 마음챙김 요가를 실시하였으며, 통제집단은 주민자치센터 일반 요가(주 2회, 60분/회) 참여자들을 대상으로 하였다. 중도탈락 인원 및 불성실한 응답자를 제외하고 총 34명(실험 17명, 비교 17명)의 데이터를 분석하였다. 연구 측정도구로는 신체자각(K-MAIA), 정서자각(TMMS), 정서표현(EES), 정서조절(ERS) 척도를 사용하여 사전과 사후에 측정하였다. 분석 결과 실험집단은 통제집단에 비해 신체자각, 정서자각, 정서표현이 경계선 상에서 유의미하게 증가하였다. 하위요인별로는 신체자각 하위요인 중 감각자각과 심신연결성자각, 정서자각의 하위요인 중 정서에 대한 명확한 인식이 유의미하게 증가하였고 정서조절의 하위요인 중에서는 능동적 양식과 지지추구적 양식이 경계선 상에서 유의미하게 증가하였다. 결론적으로 본 연구는 신체자각에 중점을 두는 마음챙김 요가가 신체자각의 증진 뿐 아니라 정서에 긍정적인 영향을 미침을 보여주고 있다.