높은 셀 전위에서 전극반응에 안정한 축전식 탈염공정의 운전 방법

이예주,권혁찬,최재환 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0

최대허용전하 (MAC)는 탄소전극의 흡착용량을 표현하기 위한 지표로 활용될 수 있다. 이와는 별도로 MAC 개념은 MCDI 셀에서 전극반응을 억제하기 위한 중요한 운전변수로 활용될 수 있을 것으로 판단되었다. 이를 확인하기 위해 셀에 공급되는 총 전하를 MAC 이하로 유지하면서 높은 셀 전위에서 MCDI 셀을 운전하여 전극반응의 안정성을 확인하였다. 셀에 인가된 전류밀도(1.43-4.29 mA/㎠)와 셀 전위(1.25-2.0 V)에 관계없이 유출수의 농도와 pH는 안정적이었고 흡착량과 전하효율도 일정하였다. 이를 통해 셀에 공급된 전하가 MAC를 초과하지 않을 경우 높은 셀 전위에서도 전극반응이 일어나지 않는 것을 확인하였다. MCDI 시스템의 운전에서 셀 전위(또는 전류)를 증가시키면 탈염 속도를 높일 수 있다. 따라서 MAC 개념을 적용한 새로운 운전 방식은 MCDI 시스템의 안정적인 운전과 탈염성능 향상에 큰 기여를 할 것으로 기대된다.

Community structure of marine benthic invertebrates recruited on artificial substrates in the Korean coast

이예주,이택준,김정호,김동건,신숙 한국환경생물학회 2022 환경생물 : 환경생물학회지 Vol.40 No.1

In this study, the community structure of marine benthic invertebrates was examined to evaluate the differences between the west, south, and east coasts of Korea and to identify the indicator species representing each region. Acrylic attachment plate sets were installed in Jeongok, Mokpo, Tongyeong, Yangpo, and Gangreung, and the invertebrate fauna thus captured were identified. Monitoring was performed in each area from March 2017 to May 2018. Water depth, temperature, and salinity at each location were measured to determine the potential influence of abiotic factors on the community structure. As a result, the mean depth of plates installed and the water temperature were significantly different in each area. A total of 32 invertebrate species were identified in all localities, and the most significant difference in the species compositions was found between Mokpo and Gangreung. The community structure differed significantly with a change in the plate depth, and a larger number of indicator species appeared on shallower plates. Finally, we determined the community structure of benthic invertebrates in different geographical regions of the Korean ocean by characterizing the dominant invertebrate taxa and the indicator species at each site.

복합재 플라이 오버랩 조인트 구조의 피로 수명 예측

이예주,김휘엽,박정선 항공우주시스템공학회 2023 항공우주시스템공학회지 Vol.17 No.2

본 논문에서는 두 가지 복합재료의 플라이를 부분적 또는 전체적으로 적층하여 접합시킨 플라이 오버랩 조인트 구조의 기하학적 특징을 이용하여 응력-수명(S-N) 선도 및 피로 수명을 예측하는 기법을 제안한다. 구조의 피로 특성에 영향을 주는 기하학적 특징을 변수로 선정하였다. 기하학적 변수와 복합재 피로 모델인 Epaarachchi-Clausen 모델을 구성하는 재료상수의 관계를 분석하여 두 요소의 관계식을 제안하였다. 제안한 방법의 예측 정확도 검증을 위해서 CFRP/GFRP 플라이 오버랩 조인트의 피로 수명을 예측하였다. 예측된 수명과 시험 데이터 기반 모델로 얻은 수명을 실제 수명에 비교하였다. 또한, 예측된 S-N 선도의 결정 계수를 계산함으로써 높은 예측 정확도를 확인하였다.

소셜커머스의 가입의도에 관한 연구

이예주,임창우 한국경영교육학회 2013 경영교육연구 Vol.28 No.2

Social commerce has experienced an exponential growth in sales volume and the number of users during a considerably short period of time. Social commerce is emerging as an important platform in e-commerce. To understand the social shopping intention of potential users, we conducted an empirical study to investigate the cause-effect relations among the factors affecting the intention to adopt social commerce. The results using the structural equation modeling (SEM) approach indicate that perceived usefulness, perceived ease of use, subjective norm, perceived resources, voluntariness, perceived trust, and perceived proximity are the factors affecting the intention to adopt social commerce. This study adds to the existing literature the empirical validation of a model that integrates the effect of seven factors on social commerce adoption intention. Understanding well the factors influencing social commerce adoption would allow firms the possibility of adjusting their strategies to attract most of their potential consumers and profit most from the opportunities offered by social commerce. 본 연구의 목적은 소셜커머스의 잠재적 소비자들을 대상으로 소셜커머스의 가입의도에 영향을 미치는 요인들에 대하여 실증적으로 살펴보고, 그 요인들이 어떻게 서로 연관되는지 구조방정식 모형을 통해 검증하는 것이다. 선행연구에서 유의한 것으로 밝혀진 지각된 유용성, 지각된 용이성, 주관적 규범, 지각된 자원, 자발성, 지각된 신뢰, 지각된 근접성 등 7개의 요인들이 잠재적 소비자들의 소셜커머스 가입의도에 실제로 영향을 미치는지 구조방정식으로 분석하였다. 배포한 800부의 설문지 중에서 483부가 회수되어 회수율은 60.3%로 나타났다. 회수된 483부 중 5부에서 문제가 발견되어 최종적으로 478부의 설문지가 연구의 표본으로 채택되었다. 실증분석 결과, 연구모형에 포함된 7개의 요인들이 가입의도에 영향을 미치는 11개 경로가 모두 유의한 것으로 나타났다. 또한 소셜커머스의 가입여부에 영향을 미치는 요인들은 소셜커머스의 반복구매(재구매)에 영향을 미치는 요인들과 일치하지 않음이 밝혀졌다. 본 연구에서는 일반상품과 서비스상품을 구분하지 않고 소비자들의 소셜커머스 가입여부를 살펴보았으나. 향후 연구에서는 상품의 종류와 속성에 따라 잠재적 소비자들의 가입여부 결정이 어떻게 달라지는지에 대한 연구와 소셜커머스 업체의 규모에 따라 잠재적 소비자들의 가입여부 결정이 달라지는지에 대한 연구가 필요할 것으로 사료된다.

李泰俊論 - 短篇小說을 中心으로 作家의 의식변모 양상 고찰 -

이예주 성심어문학회 1993 성심어문논집 Vol.14ㆍ15 No.-

16주간 우리춤 운동 프로그램이 여성노인의 인지기능과 기능체력에 미치는 영향

이예주(Lee, Ye-Ju),신상근(Shin, Sang-Keun) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.3

The purpose of this study was to investigate how Woo-Ri dance exercise program affects the cognitive function and senior fitness in elderly women. The subjects of this study were 30 female senior citizens aged 65 or older in the metropolitan city of B, and were classified into two groups: the experimental group Woo-Ri dance exercise(n=15) and the control group(n=15). The experimental group was conducted three times a week for 16 weeks. The data were calculated using the SPSS(24.0) statistics program to calculate the mean value(M) and standard deviation(SD) for each variable. To investigate main effects and interaction effects, you performed a two-way iterative ANOVA and set the post-comparison with the significance level to less than 0.05. The result was a significant increase in the main effect(p<.001) of Woo-Ri dance exercise on changes in K-MMSE as a marker of cognitive functions, and in the case of controls, the main effect was significantly reduced and the interaction effect(p<.001). For six functional fitness tests, the main effects of Woo-Ri dance exercise(p<.01, p<.001) was shown respectively, and in the control group, the main effects(p<.05, p<.01, p<.001) The interaction effects (p<.001) with were shown. Based on the results of the study, Woo-Ri dance exercise improves muscle strength, flexibility, balance, agility, cardiopulmonary endurance, and cognitive function. Therefore, Woo-Ri dance exercise is considered to be a safe and effective exercise that does not strain our joints, and will use the lives of elderly women as a physical, mental and social healthy program.

여성노인의 장기간 신체활동 유형별 프로그램 참여가 기능체력과 행복지수에 미치는 영향

이예주(Lee, Ye-Ju),안나영(An, Na-Young),신상근(Shin, Sang-Keun) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.2

The purpose of this study were to investigate the effects of long term participation physical activity programs on the senior fitness test and the happiness index in elderly women. The subjects of this study were 195 elderly women over 65 years in B metropolitan city. The 195 subjects were composed of 50 Korean dance group, 47 resistance exercise group, 48 Yoga group and 50 control group. The subjects participated in three different physical activity programs once a week over 5 years. The data were processed by using the statistical program of SPSS Version 22.0 and the mean (M) and standard deviation(S.D.) were calculated by SPSS. One-way ANOVA was used to verify the mean different between each group. Post-hoc was conducted by using the Scheffé-test. All statistical significance was treated as α=.05. The results showed that there were significantly mean differences in senior fitness between the groups (p<.05~.001) on all of the senior fitness items and the difference of happiness between groups (p<.001). Based on the results of the study, it was found that participation of physical activity program of the elderly is an important factor for maintaining and promoting senior fitness as well as maintaining a happy life. Therefore, participation of regular physical activity seems to have positive effects on healthy life, preventing the diseases, maintaining physical health, mental happiness, and bonding social ties in elderly women.

16주간의 신체활동 유형이 여성노인의 체력과 우울척도 및 사회적 건강척도에 미치는 영향

이예주(Ye Ju Lee),안나영(Na Young An),신상근(Sang Keun Shin) 한국발육발달학회 2016 한국발육발달학회지 Vol.24 No.1

In this study, in order to investigate the effect of patterns of 16-week physical activities on physical fitness depression and social measure of health, 60 minutes of physical activities per one time were performed twice a week for 16 weeks with 58 elderly women over 65 living in B metropolitan city. 58 elderly women were composed of such groups as 28 people (74.3±3.87 years old) who took Korean dance group, 14 people (76.0±4.74 years old) who took aquarobics group, and 16 people (79.1±4.26) who took sing and laugh therapy group. Pre and post tests of 6 categories in SFT, BDI and social health scale were conducted twice. A statistical program, SPSS version 22.0, was utilized for data processing to obtain mean values (M) and standard deviation values (SD) for measurement items. A two-way repeated ANOVA was also performed to investigate effect of interaction among statistical groups. significant level was assigned to be .05 and the following conclusions have been drawn. As a result, the excellence of physical activities in the Korean dance group has been proven compared with the groups of aquarobics, sing and laugh therapy. In case of Depression scale there was a meaningful result in Korean dance, sing and laugh therapy, so that Korean dance have more positive effects on mental health. As far as social health scale is concerned, much more improved results was made in groups of Korean dance, sing and laugh therapy, which indicates that physical activities play a significant role in sociality and interpersonal relations. Therefore, elderly people``s participation in physical activities have positive effects on not only improvement of physical fitness but also mentally and socially healthy life except to aquarobic group. In addition, it is considered that the ways of participation in various physical activities, development of customized program suitable for elderly people and welfare system for enhancing national health should be prepared and provided at the national level.

우리춤 운동이 여성노인의 염증인자와 행복지수에 미치는 영향

이예주(Lee, Ye-Ju),신상근(Shin, Sang-Keun) 한국체육과학회 2021 한국체육과학회지 Vol.30 No.6

The purpose of this study was to investigate how Woo-Ri dance exercise affects the Inflammatory Factors and Happiness Indices in elderly women. The subjects of this study were 30 female senior citizens aged 65 or older in the metropolitan city of B, and were classified into two groups: the experimental group Woo-Ri dance exercise (n=15) and the control group (n=15). The experimental group was conducted three times a week for 16 weeks. The data were calculated using the SPSS (24.0) statistics program to calculate the mean value (M) and standard deviation (SD) for each variable. To investigate main effects and interaction effects, you performed a two-way iterative ANOVA and set the post-comparison with the significance level to less than 0.05. The result, in the case of the happiness index, there was a significant increase in the main effect for the Woo-Ri dance exercise group (p<.001), whereas for the control group (p<.01), there was a significant decrease in the main effect and there was the interaction effect (p<.001). But the inflammatory factor did not change significantly. However, considering that it is for the elderly, it is considered a positive effect that there is no change. When the inflammatory factor element is performed in Woo-Ri dance, it is thought that it is necessary to analyze the effect of long-term exercise prescription for more than 24 weeks. The study shows that regular Woo-Ri dance with joyful music is safe and effective exercise, not causing excessive strain on the joints. In conclusion, the 16-week Woo-Ri dance exercise has a positive effect on Inflammatory Factors and Happiness Indices in elderly women, which leads to effectively improving mental health and fitness.

통도사 대웅전의 도식적 표현방식에 관한 연구

이예주(Lee, Ye-Ju),윤재신(Yoon, Chae-Shin) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.1

The purpose of this study is expressed the Temple of Tong-Do-Sa by Schematic drawing for help it"s better frame structure’s understanding. For the Schematic Expression of the the Traditional Wooden Building"s Frame Structure is categorized according to the Frame Category. According to the type of roof and gong-po, the Frame Category can be classified into a Jusimpo-Matbae type, Jusimpo-Paljak type, Dapo-Matbae type, and Dapo-Paljak type. The Frame Structure of a Traditional Wooden Building can be roughly categorization a Roof part, a Gong-po part and a Pillar part. each part is made-up a number of members. One traditional wooden building is made numerous members. In order to express this simplify, building members are represented by line and point, which are one of the basic components of drawing. This is called Line Modeling, and it is divided into three representing frame model : Model of All Member, Model of Combined Member, and Model of Typical Member. For these Schematic Expressions, it can help understanding of the Temple of Tong-Do-Sa.