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연구논문(硏究論文) : 도시 내 십자형 교차로 경관의 개방성에 관한 연구
신유경 ( Yu Kyoung Shin ),성현찬 ( Hyun Chan Sung ) 한국환경복원기술학회 2015 한국환경복원기술학회지 Vol.18 No.2
An important factor in assessing the beneficial qualities of a city’s intersection spaces can be measured by examining a pedestrian’s approach to the space and calculating the openness observed in the overall design of adjacent buildings. These spaces are influential, since they offer opportunities for pedestrians to spend time and take in views of the surrounding environment. The intersection of horizontal components in cities such as Bundang-si and Suwon-si can provide a sense of openness or greenness. We believe that there is a need for careful analysis and study of such components, as defined by designations in Bucheon-si research, and that this study can give important insights for future urban planning and design. When assessing the openness of an intersection, a key variable is the reported rate of perforation, which factors into the greenness of a space. Because of the large and varied scope of this research, this rate is highly variable, as there were many differences between each site. In descending order of average ratios: Seongnam-si, 41.79% > Bucheon-si, 35.40% > Suwon-si, 30.42%. The data compared for each city was divided into study sites selected at downtown locations as well as in urban outskirts. Openness and greenness were analyzed at each downtown and outskirt site. A summary of the results shows a decreased openness average of -2.63% in downtown locations versus outskirt. The greenness ratios in urban outskirt areas were 4.86% greater than downtown locations on average. As it relates to the results of this analysis of openness, the comprehensive property zoning for each city was determined as a ratio of residential to commercial designations. This study analyzes view points within urban cross intersections in the downtown landscape. It presents basic data and research directions to promote a better environment with regard to openness, and consists of an analysis of the relationship between a variety of physical components.
엽록소형광 매개변수를 이용한 토마토 유전자원의 유묘 단계 염류 스트레스 수준 평가
신유경(Yu Kyeong Shin),조정수(Jung Su Jo),조명철(Myeong-Cheoul Cho),양은영(Eun-Young Yang),안율균(Yul Kyun Ahn),황인덕(In deok Hwang),이준구(Jun Gu Lee) (사)한국생물환경조절학회 2021 생물환경조절학회지 Vol.30 No.2
본 연구에서는 토마토 유전자원 49점을 대상으로 엽록소형광 측정 프로토콜인 Quenching act 2를 이용하여 염류 스트레스 수준을 구분할 수 있는 엽록소형광 매개변수를 선발하기 위해 수행되었다. 염류 스트레스 평가는 3엽기 유묘 단계의 토마토 유전자원 49점을 대상으로, 1일 1회 NaCl 400mM로 저면관수를 처리하였다. 염류 스트레스 처리 4일차에 토마토 유묘의 지상부 생체중, 엽록소 및 프롤린 함량 분석을 실시하였다. 토마토 유전자원 49점의 지상부 생체중 및 엽록소 함량은 대부분 감소하였으며, 프롤린 함량 증가율은 유전자원 별로 유사하였다. 대표적인 12개의 엽록소형광 매개변수는 염류 스트레스에 노출되는 기간이 길어질수록 증감하는 경향을 보였으며, 염류 스트레스에 노출될수록 Y(NO)는 증가하였다. 본 연구결과에서 유전자원 49점의 광계Ⅱ의 비조절 에너지 소산의 양자 수율[Y(NO)]은 염류 스트레스 하에 차이를 보였으며, 염류 스트레스에 저항성을 지닌 염류 저항성 유전자원과 염류 스트레스에 감수성 유전자원 간의 차이를 확인할 수 있는 엽록소형광 매개변수로 판단되며, 토마토 유전자원에 대해 염류 스트레스 수준을 평가할 수 있는 보완적인 도구로 활용 가능하다고 판단된다. To evaluate the possibility of a non-destructive diagnosis of salinity stress in the tomato genetic resources using chlorophyll fluorescence (CF) imaging technique, 49 tomato genetic resources at 3-leaf stages were used in this study. The seedlings were irrigated once a day with tap water and 400 mM NaCl for control and salinity stress treatment, respectively and the CF parameters were assessed during four days of the experimental period. The shoots were collected and used for the measurement of growth parameters, chlorophyll and proline contents at the end of the treatment. The chlorophyll content (a and b) and fresh weight showed differential changes (%) among the susceptible, moderately resistant, and resistant genetic resources, while changes in the proline content were similar in all the genetic resources. All the CF parameters showed a positive or negative response to the salinity stress in which the quantum yield of non-regulated energy dissipation in PSII [Y(NO)] continuously increased regardless of the treatment time in the resistant, moderately resistant and susceptible genetic resources. Y(NO) was used for the screening of the 49 genetic resources and the result showed that the clear differences in Y(NO) among the susceptible, moderately resistant, and resistant genetic resources. It is concluded that the Y(NO) can be used as a CF parameter index for the screening of salinity stress tolerance in tomato genetic resources.
산후우울에 미치는 자기효능감, 부부갈등 및 산전우울의 영향
신유경 ( You Kyung Shin ),최연실 ( Youn Shil Choi ) 한국가족관계학회 2013 한국가족관계학회지 Vol.18 No.1
This research tried to find out the relative impact of the variables that affect postpartum depression. Year 1 data of the Korean children panel study, conducted since 2008 by the Korea Institute of Child Care and Education was used for the analysis of this research, and survey data were finally statistically treated 1,589 people. The results of this study were as follow: First, women in childbed`s level of postpartum depression were not high, and it was manifested into normal group and women in childbed manifested high sense of self-efficacy while levels of husband-wife conflict and prenatal depression were not high. Second, there was statistically significant difference by each group of women in childbed`s postpartum depression(normal, hardness/moderate, intermediate) when it comes to whether they drink or smoke. Third, there was statistically significant difference by each group of group of women in childbed`s postpartum depression(normal, hardness/moderate, intermediate) when it comes to sense of self-efficacy, husband-wife conflict and prenatal depression. Fourth, there was a difference in the influence of the background variables, sense of self-efficacy, husband-wife conflict and prenatal depression on the postpartum depression. In other words, postpartum depression was higher when the when the sense of self-efficacy is lower, husband-wife conflict is greater and the level of prenatal depression is higher. This research is to provide basic data for the development of programs for family consultation and for the training, targeting women in childbed and spouse.
신유경 ( Yu Kyung Shin ),엄창득 ( Chang Deuk Eom ),이상준 ( Sang Joon Lee ) 한국목재공학회 2014 목재공학 Vol.42 No.1
본 연구에서는 유한요소해석을 이용하여 응력적층 바닥판의 구조성능을 평가하였다. 바닥판의 구조성능은 처짐과 응력, 압체력의 변화로 평가할 수 있다. 하중 재하 후 바닥판의 처짐 형상을 확인한 결과 하나의 판처럼 거동하는 것을 확인하였다. 이는 압체력에 의해 각 부재 사이에 마찰력이 작용했기 때문이다. 또한 초기 압체력과 산출된 압체력을 비교한 결과 바닥판의 처짐과 함께 압체력이 감소했다. 이는 하중에 의해 바닥판의 변형이 발생하면서 작용하는 힘이 줄어듦에 따라 압체력이 감소한 것으로 판단된다. 그러나 재료의 소성 특성이 제대로 반영되지 않았기 때문에 잔류응력과 잔류변형이 고려되지 않았으므로 추후 이에 대한 연구가 필요하다. This paper represented the finite element analysis to estimate structural performance of stress-laminated deck, which is determined by deflection, stress, and aging characteristics of tensioning. After loading, the deflected shape showed plate behavior because pre-stressing make frictional force between each member. Compared between initial post-tension and the results, pre-stressing forces were decreased with deck deflection. This is because deflection occurred in the deck so that pre-stressing decreased due to load reduction. However, material plasticity was not considered so that advanced researches should be performed.
Mn-SOD와 GST 유전자 다형성에 따른 유아의 산화손상지표의 분포
신유경(Shin, You-kyung),최지원(Choi, Ji-Won),오세영(Oh, Se-Young),정자용(Chung, Jayong) 한국영양학회 2015 Journal of Nutrition and Health Vol.48 No.6
우리나라 일부 건강한 유아를 대상으로 Mn-SOD Val16Ala, GSTP1 Ile105Val, GSTT1 present/null, GSTM1 present/null 유전자 다형성 분포를 살펴본 결과, Mn-SOD Val/Val형, GSTP1 Ile/Ile형, GSTT1 null 형, GSTM1 null 형이 주된 (major) 유전자형인 것으로 나타났다. 이 중 Mn-SOD Val/Val형은 Val/Ala 또는 Ala/Ala형에 비해 소변 8-OHdG 수준이 유의적이지는 않으나 높은 경향을 나타내었고, GSTP1 Ile/Ile형은 Ile/Val 또는 Val/Val형에 비해 소변 8-OHdG 수준이 유의적으로 낮았다. 간접흡연에의 노출 여부와 간접흡연-유전자 다형성의 상호 작용이 산화손상지표에는 유의적인 영향을 미치지 않는 것으로 나타났다. 이상의 결과로 볼 때 건강한 유아에서 GSTP1 Val allele 보유한 경우 산화적 손상에 대해 취약할 수 있음을 제시하며, 추후 대규모 연구를 통한 검증 및 이들 유전자형을 보유한 대상자를 위한 효과적인 영양 중재방안에 대한 고려가 필요할 것으로 사료된다. Purpose: Genetic polymorphisms in antioxidant defense and detoxification genes may modulate the levels of oxidative stress biomarkers. Methods: A total of 301 healthy preschool-aged children in the Seoul and Kyung-gi areas were recruited. DNA was extracted from blood for genotyping of manganese superoxide dismutase (Mn-SOD) Val16Ala, glutathione S-transferase (GST) P1 Ile105Val, GSTT1 present/null, and GSTM1 present/null polymorphisms by PCR-restriction fragment length polymorphism or multiplex PCR analyses. In addition to a questionnaire survey, the levels of urinary 8-hydroxyl-2-deoxiguanosine (8-OHdG) and plasma malondialdehyde (MDA) were measured by ELISA. Results: Significantly higher urinary 8-OHdG concentrations were observed in GSTP1 Ile/Val + Val/Val genotype (p = 0.030), and tended to be higher in Mn-SOD Val/Val genotype (p = 0.065). On the other hand, exposure to environmental tobacco smoking (ETS) and interaction between ETS and gene polymorphisms did not significantly influence either urinary 8-OHdG concentrations or serum MDA. Conclusion: Based on our findings, GSTP1 Ile/Val gene polymorphisms might modulate the levels of oxidative stress biomarkers in healthy preschool children.