연구발표논문초록 : Calendering 공정에서의 Maxwell 유체의 유동해석

유정수 (정),이재욱 (정),이현구 (정),이기준 (정) ( Jeong Su Yu,Jae Wook Lee,Hyun Ku Rhee,Ki Jun Lee ) 한국화학공학회 1982 추계총회초록집 Vol.- No.-

논문(論文) : 임산(臨産) 이경맥(離經脈)에 대한 연구 -맥리(脈理)와 임상활용을 중심으로-

유정아 ( Jeong Ah Lyu ),백상용 ( Sang Ryong Baik ),정창현 ( Chang Hyun Jeong ) 대한한의학원전학회(구 대한원전의사학회) 2013 대한한의학원전학회지 Vol.26 No.1

Subject: The Imminent Labor Pulse(臨産 離經脈, extra-meridian pulse approaching labor) is one of many practical clinical knowledges, unique to Traditional Korean(Eastern) Medicine. Objective: This research explores the origin and change of perception on the subject throughout history, with objective to sort out practical knowledge applicable in the clinic of today. Also, it draws clinical meaning of pulse diagnosis according to the physiological theories, and suggests directions for future clinical researches. Method: First, the Imminent Labor Pulse was examined based on major publications such as the 『Nanjing』, 『Maijing』and theories of major doctors. Second, this previous study was examined through clinical observation research. Third, further research was carried out on pulse theory according to the Traditional Medical theories. Fourth, their clinical practicality and points of further research were sorted out. These points need to be examined through additional clinical research. Conclusion: The following conclusions could be drawn from study of the Imminent Labor Pulse. From the Imminent Labor Pulse which indicated the beginning of the first period of labor in the 『Maijing』, it developed into trying to grasp the beginning of the second period of labor which is the actual time of labor, through 『Zhubingyuanhoulun』 and 『Shizaizhifang』. By Xueji, another pulse that could be felt on the middle finger of the mother had been discovered. The middle finger is where the Pericardium Meridian flows. The child`s connection to the uterus becomes disconnected on the first period, but that with the Pericardium meridian which provides blood meridian to the Taichongmai of the child continues throughout labor until the umbilicus chord is cut. Therefore, this middle finger pulse could serve as showing the heart condition of the mother and child during labor. The time of its appearance and disappearance, and their correlation with the child`s heartbeat need to be clinically examined.

3D 감시 기능을 갖는 스마트 순찰 드론

정유정(Yujeong Jeong),박재형(Jaeheong Park),이혁진(Hyukjin Lee),최정희(Junghee Choi),이해연(Hae-Yeoun Lee) 한국정보기술학회 2017 Proceedings of KIIT Conference Vol.2017 No.6

덖음 시간에 따른 감국(Chrysanthemum indicum L.) 차의 이화학적 특성

유정식(Jung Sik Yu),황인국(In Guk Hwang),우관식(Koan Sik Woo),장영득(Young Deug Chang),이철희(Chul Hee Lee),정정학(Jeong Hag Jeong),정헌상(Heon Sang Jeong) 한국식품과학회 2008 한국식품과학회지 Vol.40 No.3

덖음 처리가 감국차의 품질 특성에 미치는 영향을 살펴보고자 감국 꽃을 230℃에서 5, 7.5, 10, 12.5 및 15분간 덖음 처리 후 감국 꽃 침출액을 제조하여 품질특성을 조사하였다. 덖음 시간이 길어질수록 L 및 a 값은 감소하고 b 값은 증가하여 차의 색은 점차 황색을 나타내었으며, 총 질소함량은 3.15-3.33%의 범위를 보였고 구성 아미노산은 감칠맛의 주성분인 glutamic acid를 비롯하여 18종이 분석되었으며, 이들 중 glutamic acid와 aspartic acid가 가장 많은 비율을 차지하였다. Chlorophyll 함량은 덖음 시간이 길어질수록 감소하는 경향을 나타내었다. Tannin, 총 폴리페놀 및 플라보노이드 함량은 덖음 시간에 따라 대체적으로 증가하는 경향을 보였으며, 15분 덖음 시 각각 0.63 ㎎ gallic acid equiv./g, 13.85 ㎎ tannic acid equiv./g 및 9.77 ㎎ catechin equiv./g이었다. 전자공여능은 15분 덖음 시 9.93%, 총 항산화력은 10분 덖음 시 19.33 ㎎ ascorbic acid equiv./100 g으로 대조구보다 높은 항산화 활성을 나타내었다. 덖음 감국 꽃차의 관능검사 결과 색은 12.5분, 맛과 향 및 종합적 기호도는 10분 덖음 처리된 차가 가장 우수한 것으로 나타났다. In this study, Chrysanthemum indicum L. flower tea was prepared according to different pan-firing times (5, 7.5, 10, 12.5, and 15 min) and its quality characteristics were investigated. Total nitrogen and tannin contents increased with increasing pan-firing time, whereas chlorophyll and total amino acid (AA) contents decreased. The total AA contents of the samples ranged from 6,399 to 7,068 ㎎%, and the highest content (7,068 ㎎%) was found with the 10 min panfiring treatment. The AAs occurring in the C. indicum L. flower tea included glutamic acid and aspartic acid, which are desirable flavor components. As the pan-firing time increased, antioxidant activity as well as total polyphenol and flavonoid contents increased. The highest total polyphenol and flavonoid contents were found in the 15 min treatment at levels of 13.85 ㎎ tannic acid equiv./g and 9.77 ㎎ catechin equiv./g, respectively. The 15 min pan-firing treatment also had the highest total antioxidant activity at 19.33 ㎎ ascorbic acid equiv. eg/100 g. Finally, based on sensory evaluations, the 10 min pan-fired C. indicum L. flower tea had the best overall quality.

GEMS 영상과 기계학습을 이용한 산불 연기 탐지

정예민 ( Yemin Jeong ),김서연 ( Seoyeon Kim ),김승연 ( Seung-yeon Kim ),유정아 ( Jeong-ah Yu ),이동원 ( Dong-won Lee ),이양원 ( Yangwon Lee ) 대한원격탐사학회 2022 大韓遠隔探査學會誌 Vol.38 No.5

산불의 발생과 강도는 기후 변화로 인하여 증가하고 있다. 산불 연기에 의한 배출가스 대기질과 온실 효과에 영향을 미치는 주요 원인 중 하나로 인식되고 있다. 산불 연기의 효과적인 탐지를 위해서는 위성 산출물과 기계학습의 활용이 필수적이다. 현재까지 산불 연기 탐지에 대한 연구는 구름 식별의 어려움 및 모호한 경계 기준 등으로 인한 어려움이 존재하였다. 본 연구는 우리나라 환경위성 센서인 Geostationary Environment Monitoring Spectrometer (GEMS)의 Level 1, Level 2 자료와 기계학습을 이용한 산불 연기 탐지를 목적으로 한다. 2022년 3월 강원도 산불을 사례로 선정하여 산불 연기 레이블 영상을 생성하고, 랜덤 포레스트 모델에 GEMS Level 1 및 Level 2 자료를 투입하여 연기 픽셀 분류 모델링을 수행하였다. 훈련된 모델에서 입력변수의 중요도는 Aerosol Optical Depth (AOD), 380 nm 및 340 nm의 복사휘도 차, Ultra-Violet Aerosol Index (UVAI), Visible Aerosol Index (VisAI), Single Scattering Albedo (SSA), 포름알데히드, 이산화질소, 380 nm 복사휘도, 340 nm 복사휘도의 순서로 나타났다. 또한 2,704개 픽셀에 대한 산불 연기 확률(0≤p≤1) 추정에서 Mean Bias Error (MBE)는 -0.002, Mean Absolute Error (MAE)는 0.026, Root Mean Square Error (RMSE)는 0.087, Correlation Coefficient (CC)는 0.981의 정확도를 보였다. The occurrence and intensity of wildfires are increasing with climate change. Emissions from forest fire smoke are recognized as one of the major causes affecting air quality and the greenhouse effect. The use of satellite product and machine learning is essential for detection of forest fire smoke. Until now, research on forest fire smoke detection has had difficulties due to difficulties in cloud identification and vague standards of boundaries. The purpose of this study is to detect forest fire smoke using Level 1 and Level 2 data of Geostationary Environment Monitoring Spectrometer (GEMS), a Korean environmental satellite sensor, and machine learning. In March 2022, the forest fire in Gangwon-do was selected as a case. Smoke pixel classification modeling was performed by producing wildfire smoke label images and inputting GEMS Level 1 and Level 2 data to the random forest model. In the trained model, the importance of input variables is Aerosol Optical Depth (AOD), 380 nm and 340 nm radiance difference, Ultra-Violet Aerosol Index (UVAI), Visible Aerosol Index (VisAI), Single Scattering Albedo (SSA), formaldehyde (HCHO), nitrogen dioxide (NO₂), 380 nm radiance, and 340 nm radiance were shown in that order. In addition, in the estimation of the forest fire smoke probability (0 ≤ p ≤ 1) for 2,704 pixels, Mean Bias Error (MBE) is -0.002, Mean Absolute Error (MAE) is 0.026, Root Mean Square Error (RMSE) is 0.087, and Correlation Coefficient (CC) showed an accuracy of 0.981.

디자인 교육에서 고차적 사고력 교육을 통한 창의성 향상에 관한 연구

정유정(Jeong, Yoo-jeong),김원택(Kim, Won-Taik) 한국디자인학회 2012 한국디자인학회 학술발표대회 논문집 Vol.2012 No.10

보양음식 전문점 서비스 품질이 고객만족도에 미치는 영향

정유정(Jeong, Yoo-Jeong),이희찬(Lee, Hee-Chan) 한국호텔외식관광경영학회 2015 한국호텔외식경영학회 학술발표논문집 Vol.- No.-

The purpose of this study was to examine the effect of service quality on customer satisfaction in refection food restaurants and the moderating effect of companion type through hierarchical regression analysis. A survey was conducted from April 1 to May 1, 2015. Among a total of 420 questionnaires distributes. 370 questionnaires were used. The results of this study are as follows: Firstly, it was found that factors of service quality by a refection food restaurants are the health quality of the refection food. hospitality and hygienic control. the physical environment quality. the quantitative as well as the qualitative quality of the refection food. including the ease of access and comfort. Secondly, service quality factors partly had a positive significant influence on service customer satisfaction. Particularly, physical environment quality had the most significant impact on service customer satisfaction followed by qualitative quality of the refection food. hospitality and hygienic control. Thirdly, the companion type showed the moderating effect between service quality in refection food restaurant and customer satisfaction. Finally, the study closes with a discussion of our theoretical and practical implications, limitations, and suggestions for future research.

유치원 종일반 운영에 관한 고찰

정유정(Jeong Yu-Jeong) 한국어린이미디어학회 2010 어린이미디어연구 Vol.9 No.3

본 연구의 목적은 유치원 종일반 운영을 위한 교육과정 구성 원리와 운영 형태를 도출해보고 바람직한 종일반 운영 방안에 대해 살펴보는 데 있다. 현행 종일반 운영은 유아의 사회 정서에 부정적 영향을 미치고 있다는 연구들을 유념해 프로그램과 운영 형태 등을 개선할 필요가 있다. 본 연구에서 종일제 교육과정은 유아의 전인적 발달과 기본생활 교육을 강조하고, 유아의 요구와 흥미 및 개별성을 존중하며, 놀이 중심의 교육을 전개하여 자신의 역할 이해 및 정서적 갈등을 해소하고, 즐거움과 편안한 분위기를 제공해 주도록 구성해야 하는 것으로 기본 원리를 제시하였다. 종일제 교육과정의 모형은 보육활동만 수행하는 형태, 보육 및 심화활동 형태, 보육과 심화 활동 및 특성화 활동을 모두 수행하는 형태로 분류하였다. 아울러 현장에서 종일반 운영을 활성화하려는 노력이 필요하며 활성화를 위한 현장의 노력에서 유념해야 할 점에 대해 제언하였다. The purpose of this study was to find out the full-day kindergarten program principles of construction and administer models. And to review studies of realities and effect administer the full-day kindergarten program. In this paper, we suggest 4 type administer models. These are type of day care, type of day care plus extended activities, type of day care plus special activities, and type of all of them. And to propose the effort of Kindergarten by one-self according to indicator of assessment and revitalization of full-day kindergarten program.

위식도 역류질환 환자에서 Proton Pump Inhibitor 치료 후 재발률 및 증상개선에 관한 임상적 고찰

정유정 ( You Jeong Jeong ),이동호 ( Dong Ho Lee ),최태혁 ( Tae Hyuck Choi ),황태준 ( Tae Jun Hwang ),이병환 ( Byeong Hwan Lee ),나종천 ( Jong Chon Nah ),이상협 ( Sang Hyub Lee ),박영수 ( Young Soo Park ),황진혁 ( Jin Hyok Hwang 대한소화기학회 2010 대한소화기학회지 Vol.55 No.2

목적: 위 식도 역류질환은 치료 후 증상 호전 및 식도염이 치유되더라도 약 복용을 중단하면 1년 이내에 50-80%에서 재발하는 만성적인 경과를 갖는 것으로 알려져 있다. 이에 저자들은 위 식도 역류질환 환자들에서 양자펌프 억제제 투여 후 재발률과 치료에 대한 반응을 비교하였다. 대상 및 방법: 2008년 7월부터 2009년 1월까지 분당서울대학교병원 소화기내과 외래를 방문했던 식도염 증상을 호소하는 총 207명의 역류성 식도염 환자에서 위 내시경 검사를 시행 후 비미란성 역류성 식도염과 미란성 역류성 식도염 두 군으로 나누었고 비미란성 식도염군은 란소프라졸 15 mg, 미란성 식도염군은 란소프라졸 30mg을 각각 8주간 투여하였다. 상부위장관 내시경 검사 시 H. pylori 감염 여부를 확인하였으며 가슴 쓰림, 역류, 소화장애 및 비전형적인 증상의 4가지 증상항목을 치료 전과 8주간 치료 후에 조사하였다. 투약에 따른 치료반응이 있었던 환자들에서 전화 설문이나 외래 방문을 통하여 치료 중단 후 증상 재발에 대해 평가하였다. 결과:평균 추적 관찰 기간은 24.4주로 시험을 완료한 총 207명의 위 식도 역류질환 환자에서 전체 재발률은 40%였으며 NERD군 94명, ERD군 113명으로 나눈 두 군에서의 재발률은 각각 43.8%, 35.1%였고 두 군 간 차이는 없었다. 평균 재발 시기는 NERD군은 10.1주, ERD군은 10.6주였으며, 8주간 투약 후 증상 개선율은 전체 위 식도 역류질환 환자에서 89.4%였고 NERD군은 85.1%, ERD군은 92.9%로 재발시기와 증상 개선율 모두 두 군 간 차이를 보이지 않았다. 식도염의 4가지 증상에 대해 치료 전후 비교한 점수는 두 군 모두 유의한 감소가 있었으며(p< 0.001), H. pylori 감염률은 NERD군에 비해 ERD군에서 유의하게 낮은 결과를 나타내었다(34.3% vs. 20.0%, p=0.036). 결론: 위 식도 역류질환 환자에서 8주간 PPI 치료 후 6개월 이내 재발률은 40%였으며 절반용량을 투여한 비미란성 식도염군과 표준용량을 투여한 미란성 식도염군에서 재발률, 재발시기 및 증상 개선율은 두군 간 차이가 없었고, 역류성 식도염의 재발을 예방하기 위해 양자펌프 억제제의 필요 시 투여 혹은 지속적 투여를 고려해야 될 것으로 생각한다. Background/Aims: Gastro-esophageal reflux disease (GERD) is a chronic condition, with 50-80% of patients experiencing recurrence within one year following completion of initial treatment. The present study aimed to estimate recurrence rate and treatment response in GERD patients treated with proton pump inhibitor. Methods: A total of 207 symptomatic GERD patients, which were confirmed by endoscopy from July 2008 till January 2009, were enrolled. They were divided into non-erosive reflux disease (NERD) group and erosive reflux disease (ERD) group by endoscopic findings. Patients were treated with lansoprazole 15 mg (NERD group) or 30 mg (ERD group) once daily for 8 weeks. The presence of symptoms was assessed in each patient at baseline and post-treatment using a questionnaire. Subsequent symptomatic recurrence on the cessation of therapy in each improved patients was checked by telephone survey or outpatient interview. Results: Ninety-four patients and 113 patients were first diagnosed with NERD and ERD, respectively. The mean post-treatment follow-up period was 24.4±8.5 weeks. Recurrence rate was 40.0% (NERD, 43.8%; ERD, 37.1% (p=0.224)). Recurrence time was 10.1±5.8 weeks (NERD 9.6 weeks; ERD, 10.6 weeks (p=0.444)). Regarding the symptom improvement after 8 week therapy with lansoprazole, 89.4% (NERD, 85.1%; ERD, 92.9% (p=0.056)) of total patients were symptomatically improved. Conclusions: Forty percentage of GERD patients recurred within 6 months following the completion of 8 week therapy with lansoprazole. Recurrence rate, recurrence time, and rate of symptom improvement were not significantly different between NERD group treated with half dose and ERD group treated with full dose lansoprazole. (Korean J Gastroenterol 2010;55:100-108)

제품성과의 인지적 평가에 따른 만족 판단에 있어 실망과 후회의 매개효과

정유정(Yoo Jeong Jeong),전선규(Sun Kyu Jun) 한국마케팅학회 2010 마케팅연구 Vol.25 No.4

본 연구는 소비자 만족 판단이 제품성과에 대한 비교판단의 산물일 뿐 아니라 비교판단과정에서 유발된 감정에 의해 영향을 받는다는 점에 토대를 두고 있다. 본 연구는 선택한 제품과 선택하지 않은 제품 간 비교평가 즉, 대안 불일치가 만족에 미치는 효과는 제품성과와 기대 간 비교평가 즉, 기대 불일치의 효과에 비해 독립적이라는 것을 제안하는 기존연구를 확장하여, 기대 불일치와 대안 불일치에 따라 유발되는 감정의 매개역할을 탐구하고 있다. 본 연구에서는 기대 불일치가 만족에 미치는 효과는 실망이라는 감정경험에 의해 매개되는 반면, 대안 불일치가 만족에 미치는 효과는 후회라는 감정경험에 의해 매개된다는 것을 주장하고 있다. 가설검증을 위해 연구 1에서는 대학생들을 대상으로 수강과목에 대한 만족 판단과정에 대한 설문조사를 실시하였고 연구 2에서는 대학생들을 대상으로 볼펜 사용 후 만족 판단과정에 대한 실험을 수행하였다. 연구 1의 분석결과, 기대 불일치가 만족에 미치는 효과는 실망에 의해 부분적으로 매개되었으며 대안 불일치가 만족에 미치는 효과는 후회에 의해 부분적으로 매개되는 것으로 나타났다. 연구 2에서 각 변수에 대한 수준을 조작한 실험을 수행한 결과, 기대 불일치와 대안 불일치가 만족에 미치는 효과는 각각 실망과 후회에 의해 완전 매개되는 것으로 나타났다. Expectancy-Discrepancy model of consumer satisfaction argues that satisfaction is determined by the discrepancy between expectancy and perceived performance, implying that satisfaction judgment is an outcome of comparison process for the perceived performance with a comparison standard. The literature suggests alternative comparison standards such as mere expectancy, predictive expectations, desires, equity-expectations, and brand- or product-based norms. Among these alternative comparison standards, equity-expectations and norms reflect consumers` reliance on the performance of other alternatives, which are not chosen or purchased, in their satisfaction judgment. The present study is in line with the past research suggesting that consumers pay attention to the forgone alternative and experience counterfactual thinking and that their satisfaction judgment is influenced by the expected performance or the estimated performance of the forgone alternative (Carmon and Ariely 2000; Inman, Dyer, and Jia 1997; Taylor 1997). The study suggests that expectancy-discrepancy evaluation, which refers to the evaluation of the discrepancy between perceived performance and expectancy, results in the experience of disappointment whereas forgone-discrepancy evaluation, which refers to the evaluation of the discrepancy between the perceived performance of chosen product and that of forgone alternative, results in the experience of regret. The study further suggests that disappointment and regret determine satisfaction judgment, implying the mediating role of disappointment for the effect of expectancy discrepancy on satisfaction and the mediating role of regret for the effect of forgone discrepancy on satisfaction. The distinction between disappointment and regret is based on the literature suggesting that disappointment is distinctive from regret in a sense that the former is an emotional response to the chosen alternative whereas the latter is an emotional response to the counterfactual thinking that the better result could have happened (Landman 1993; Zeelenberg et al. 2000). Specifically, the present study replicates the past study, suggesting that forgone-discrepancy evaluation has a positive effect on the satisfaction judgment, being independent of the positive effect of expectancy discrepancy. The following hypotheses are developed: H1a: (Negative) Expectancy-discrepancy evaluation has a negative effect on satisfaction judgment. H1b: The effect of expectancy-discrepancy evaluation on the satisfaction judgment is mediated by disappointment. H2a: (Negative)Forgone-discrepancy evaluation has a negative effect on satisfaction judgment. H2b: The effect of forgone-discrepancy evaluation on the satisfaction judgment is mediated by regret. In study one, the hypotheses were tested for 74 college students in the context of course evaluation. It was found that forgone-discrepancy had a positive effect on satisfaction and that the effect was independent of the effect of expectancy-discrepancy; the effect of expectancy-discrepancy on satisfaction was partially mediated by disappointment; and the effect of forgone-discrepancy on satisfaction was partially mediated by regret. Thus all the three hypotheses were supported. However, it was also found that forgone discrepancy was related to disappointment, which mediated in part the effect forgone discrepancy on satisfaction. In study two, an experiment was conducted for 232 college students in the context of ball-point pen. The level of forgone-discrepancy was manipulated to be either positive or negative, independently of the level of expectancy-discrepancy, resulting in the 2*2 factorial design (Positive vs. Negative Expectancy Discrepancy * Positive vs. Negative Forgone Discrepancy). It was found that the effect of forgone-discrepancy on satisfaction judgment was independent of the effect of expectancy-discrepancy, replicating the results of study one. It was also found that the effect of forgone-discrep