Automatic Detection of Texture-defects using Texture-periodicity and Jensen-Shannon Divergence

V Aha,N U Bhajantri,P Nagabhushan 한국정보처리학회 2012 Journal of information processing systems Vol.8 No.2

위성통신 시스템을 위한 Ka대역 SSPA 도파관 분배결합기의 설계

안희수(Aha Hee Soo),정창욱(Jung Chang Uk),이연혜(Yi Yeon Hye),김형종(Kim Hyoung Jong),송충호(Song Choong Ho),백성호(Baek Sung Ho) 한국통신학회 2013 한국통신학회 학술대회논문집 Vol.2013 No.11

대학생의 가족기능, 이성과의 친밀감 위험, 대학생활만족에 관한 연구

안성아(Seong-Aha Ahan),오수미(Su-Mi Oh),공정현(Jeong-Hyeon Kong) 한국산학기술학회 2017 한국산학기술학회논문지 Vol.18 No.10

본 연구는 대학생의 가족기능, 이성과의 친밀감 위험, 대학생활만족의 정도를 파악하고 각 변수 간 상관관계와 대학생활만족도에 미치는 영향요인을 규명할 목적으로 실시하였다. 자료 수집은 2017년 5월 11일부터 5월 20일 까지 지방에 소재한 2개의 4년제 종합 대학에 재학 중인 180명의 대학생을 대상으로 구조화된 설문지를 이용하였다. 자료 분석은 SPSS/WIN 20.0을 이용하였으며, t-test, ANOVA, 상관관계 분석과 다중회귀 분석을 사용하고, 사후분석은 sheffe test로 분석하였다. 연구결과 대학생의 가족기능은 5점 만점에 평균 3.07±0.44점이었고, 이성과의 친밀감 위험은 4점 만점에 평균 2.03±0.59, 대학생활만족도 5점 만점에 평균 3.20±0.50이었다. 대학생활만족도는 일반적 특성 중 부모의 경제활동유형에 따라 유의한 차이가 있었고, 가족기능이 높을수록, 이성과의 친밀감 위험이 낮을수록 대학생의 대학생활만족도는 높아지는 것을 알 수 있었다. 대학생활만족에 영향을 미치는 주된 요인은 가족기능의 하위변인인 가족의사소통(β=0.341, p=.001), 부모의 경제활동유형(β=0.161, p=.007)이었고 총 설명력은 13.1%였다. 이러한 연구결과를 바탕으로 대학생의 대학생활만족도를 향상시키기 위하여 가족기능 중 가족의사소통을 향상시킬 필요가 있다. The aim of this study was to investigate the relationship among family function, intimacy risk with the opposite sex, and campus life satisfaction amongcollege students. A descriptive study was conducted. Data were collected from May 11, 2017 to May 20, 2017 by using a structured questionnaire. The participants were 180 college students attwo colleges in J-city. Data were analyzed using t-test, one way ANOVA, Scheffe test, pearson correlation coefficient, and multiple regression analysis with SPSS 20.0. The mean scoreswere as follows: family function 3.07±0.44(5 points), intimacy risk with the opposite sex 2.03±0.59(4 points), and campus life satisfaction 3.20±0.50(5 points). There was a significant correlation between the family function, intimacy risk with the opposite sex, and campus life satisfaction variables. Multiple regression analysis showed that factors influencing campus life satisfaction were family communication(β=0.341, p=.001) and parental economic activity type(β=0.161, p=.007). The explanation power of this regression model was 13.1%. These results of this study indicate that effective campus life satisfaction should be developed by including improvement of family community of family function

흡열판의 종류에 따른 UnglazedPVT 모듈의 성능 실험 분석

천진아(Chun, Jin-Aha),정선옥(Jeong, Seon-Ok),김진희(Kim, Jin-Hee),김준태(Kim, Jun-Tae),조인수(Cho, In-Soo),남승백(Nam, Seung-Baeg) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11

A photovoltaic/thermal(PVT)collector produces both thermal energy and electricity simultaneously. The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. A PVT module is a combination of PV module with a solar thermal collector which forms one device that converts solar radiation into electricity and heat. In general, there are two different types of PVT module:glazed PVT module and unglazed PVT module. On the other hand, two types of the PVT module can be distinguished according to absorber on PV module rearside: the sheet-and-tube absorber PVT module and the fully wetted absorber PVT module. The absorber collector plays an important function in PVT system. It cools down the PV module, while collecting the thermal energy produced in the form of hot water. The aim of this study is to compare the electrical and thermal performance of two different PVT collectors, one with the rectangular tube and the other with fully wetted absorber PVT collectors. For this paper, the PVT collectors with two different types of thermal absorber were made, and both the thermal and electrical performance of them were measured in outdoor, and the results were compared. The experimental results were analyzed that the thermal efficiency of the fully wetted absorber PVT collector is about 8.7% higher than the sheet-and-tube absorber PVT collector, and for the electrical efficiency, the fully wetted absorber PVT collector had about7% higher than the rectangular tube absorber.

실험에 의한 액체식 Unglazed PVT모듈의 성능 분석

천진아(Chun Jin-Aha),김진희(Kim Jin-Hee),강준구(Kang Jun-Gu),김준태(Kim Jun-Tae) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11

The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. A photovoltaic-thermal(PVT) collector is a combination of PV module with a solar thermal collector which forms one device that converts solar radiation into electricity and heat simultaneously. In general, there are two different types of PVT collectors: glass-covered PVT module, which produces high-temperature heat but has a slightly lower electrical yield, and uncovered PVT module, which produces relatively low-temperature heat but has a somewhat higher electrical performance. This paper dealt with the electrical and thermal performance of water-type unglazed PVT collector, in relation to the inlet water temperature in particular. The experimental results showed that the thermal efficiency of the PVT module was 32.3% average and its PV efficiency was about 12.4% average, both depending on solar radiation, inlet water temperature and ambient temperature. The relationship between the PVT surface temperature and inlet water temperature into the unglazed PVT combined module was analysed. For the unglazed PVT combined module, it can be concluded that the PVT module required to maintain under a certain inlet water temperature to prevent the electrical performance decrease prevention depending on temperature increase.

노긍 소품문고

안대회(Dae Hoe Aha) 우리한문학회 2002 漢文學報 Vol.6 No.-

전면 액체식 흡열판을 적용한 PVT 모듈의 실험성능

천진아(Chun Jin-Aha),김진희(Kim Jin-Hee),김준태(Kim Jun-Tae),조인수(Cho In-Soo),남승백(Nam Seung-Baeg) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.4

The heat from PV modules should be removed for better electrical performance, and can be converted into useful thermal energy. A photovoltaic-thermal(PVT) module is a combination of PV module with a solar thermal collector which forms one device that converts solar radiation into electricity and heat simultaneously. In general, there are two different types of PVT module: glazed PVT module and unglazed PVT module. On the other hand, two types of the PVT module can be distinguished according to absorber on PV module rear side: the sheet-and-tube absorber PVT module and the fully wetted absorber PVT module. In this paper, the experimental performance of water type unglazed PVT with fully wetted absorber was analyzed. The electrical and thermal performance of the unglazed PVT were measured in outdoor conditions, and the results were analyzed. The experimental results showed that the thermal efficiency of the PVT module was 42% average, and its electrical efficiencies were 15.2% and 14.2% average, respectively, for the mean fluid temperature of 10-20℃ and 21-30℃. Thermal efficiency depends on solar radiation, mean fluid temperature and ambient temperature. The PVT module temperature is related to the cooling effect of the PV module by the fluid of the absorber. The results proved that the electrical efficiency was higher when the mean fluid temperature was lower.

심뇌혈관질환 예방교육 프로그램이 지역사회 노인의 심뇌혈관질환 인식, 태도 및 건강행위에 미치는 영향

안성아 ( Ahn Seong Aha ),공정현 ( Kong Jeong Hyeon ) 아시아문화학술원 2016 인문사회 21 Vol.7 No.5

본 연구는 지역사회 노인을 대상으로 심뇌혈관질환 예방교육 프로그램이 지역사회노인의 심뇌혈관질환 인식, 태도, 건강행위에 미치는 효과를 파악하기 위한 비동 등성 대조군 전후 실험연구이다. 연구기간은 2015년 7월부터 9월까지이며, 자료수집은 G도 H군에 소재한 보건소에 등록된 대상자로 실험군 28명, 대조군 29명을 대상으로 하였다. 실험군에게 연구자가 개발한 프로그램을 7주 동안 1회/주, 1회 90분씩 제공하였으며 대조군에게는 프로그램을 진행하지 않았다. 자료 분석은 빈도와 백분율, 카이제곱검정, Paired t-test를 이용하였다. 심뇌혈관질환 예방교육 프로그램을 실시한 후 두 군간 중재 전·후로 심뇌혈관질환 인식(t=2.61, p=.012), 태도(t=2.69, p=.009), 건강행위(t=4.43, p<.001)에서 유의한 차이가 있었다. 이와 같이 지역사회 노인을 위한 심뇌혈관질환 예방교육 프로그램이 지역사회 노인의 심뇌혈관질환에 대한 인식 및 생활습관 개선에 효과적으로 적용될 수 있을 것으로 기대된다. This is a nonequivalent control group pre/post test study to understand the effects of a cardiocerebrovascular disease prevention education program on cardiocerebrovascular knowledge, attitude, and health behavior of the elderly. Targeting 28 subjects of experimental group and 29 subjects of control group registered in health center in H-gun, G-do, from July 2015 to September 2015, the program developed by the researcher was provided to the experimental group for seven weeks(once a week, 90mins/session) while the program was not given to the control group. For data analysis, the frequency, percentage, chi-squared test, and paired t-test were used. After the cardiocerebrovascular disease prevention education program, both groups showed significant differences in cardiocerebrovascular knowledge (t=2.61, p=.012), attitude(t=2.69, p=.009), and health behavior(t=4.43, p<.001) before/after the intervention. Such results show that the cardiocerebrovascular disease prevention education program could be effectively applied to the improvement of cardiocerebrovascular knowledge and life habit of the elderly.

에어로빅댄스시 Hand-weight 부하 트레이닝이 혈청지질 변화에 미치는 영향

안용덕 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

The aim of this paper was to estimated a serum lipid during aerobic dance training with(n=15) and without(n=15) hand-weight 1. Serum total cholesterol concentration was not significant difference following training period in hand-held weight group and no hand-weight group. However, it was shown a significantly low levels(p<.01) in hand-held weight group after 8 week training in compared to both group. 2. Serum HDL-C concentration of hand-held weight group was shown a significantly increased levels(p<.001) after 8 week training compared to pre-training. but It was not shown a difference in no hand-weight group. In comparison to both group, HDL-C was display a significantly high levels(p<.05) in hand-held weight group during training 8 week. 3. Serum LDL-C concentration of hand-held weight group was shown a significantly decreased levels after 4 week(p<.01) and after 8 week(p<.01) compared to pre-training. Also, it was shown a significant difference between pre-training vs. after 8 week and after 4 week vs. after 8 week(p<.001, respectively) in no hand weight group. In comparison to both group, LDL-C was display a significantly low levels(p<.01) in hand-held weight group during training 4 week. 4. Serum triglyceride concentration was not significant difference in both group and training period. Gordon, T., Castelli, W.P., Hjortland, M.J., Kannel, W.B, & Dawbaer, T.R (1977) HDL as a protective factor against CHD. The Framingham Study. Am J Med, 62: 707-714. Conclusively, It is suggestion that hand-weight training during aerobic dance was positive effects to improve a percent body fat and serum HDL-C.

지구성 운동이 노화 흰쥐의 Endothelin 수용체를 통한 ET-1의 혈관 긴장 조절에 미치는 영향

안용덕 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

This study divides 20-month Sprague-Dawley rats into endurance training group (N=24) and control group (N=24), conducts endurance training for 8 weeks, examines the effects of the training on vascular tension regulation of ET-1 with Endothelin receptors and obtains the following conclusions. The comparison of training group and control group in the change of heart rates showed a statistically significant change. After the blockade of an action of ETA receptor with optional antagonist BQ-123 for ETA receptor and the administration of ET-1, both groups showed a significant decrease of mean arterial pressure. After the blockade of an action of ETB with optional antagonist BQ-788 and the administration of ET-1, both groups showed a significant increase in mean arterial pressure and there was a statistically significant difference at the level of p<.01. After the blockade of action of ETA receptor and ETB receptor using BQ-123 and BQ-788, two groups showed a significant increase of the mean arterial pressure and there was statistically significant difference at the level of p<.001. To sum up the above results, long-term endurance training increases the function of endothelium cell due to aging and it is considered that the vascular relaxation of endogenous ET-1 through ETB receptor by exercise is increased. But, to support the findings of this study, future research of analyzing the generation of endothelin receptor subtypes in several tissues including vascular endothelium cell using the methods like PCR organism will be needed.