Assessment of Future Climate and Vegetation Canopy Change Impacts on Hydrological Behavior of Chungju Dam Watershed using SWAT Model

박민지,하림,김남원,임경재,김성준 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.4

The impact on hydrological components including evapotranspiration, soil moisture content, groundwater recharge, and daminflow by the future potential climate and vegetation canopy changes was assessed for a dam watershed using Soil and WaterAssessment Tool (SWAT) model. The SWAT model was calibrated and verified using 9 years (1997-2006) and another 7 years(1990-1996) daily dam inflow data, respectively for a 6,585.1 km2 dam watershed located in the mountainous northeastern part ofSouth Korea. The second generation coupled global climate model (CGCM2) data of Canadian Centre for Climate modelling andanalysis (CCCma) from two Special Reports on Emissions Scenarios (SRES) climate change scenarios (A2 and B2) of theIntergovernmental Panel on Climate Change (IPCC) were adopted. The future vegetation canopy was developed by the nonlinearregression between monthly Leaf Area Index (LAI) from Terra MODIS (Moderate Resolution Imaging Spectroradiometer) imagesand monthly mean temperature of 7 years (2000-2006) data. The future prediction results with A2 and B2 scenarios showed that themaximum changes in annual dam inflow were predicted to be -18.2% in 2090s A2 scenario compared to 2000 baseline data. Thefuture seasonal maximum dam inflow changes appeared in fall period to be -31.0% for the A2 scenario. From the contributionanalysis of climate change and vegetation canopy for the overall future predicted results, the climate change primarily led the futureimpact on the predicted results. For the future vegetation impact on hydrological components, soil moisture was more sensitive thandam inflow and evapotranspiration.

Effect of donor–recipient size mismatch on long-term graft survival in pediatric kidney transplantation: a multicenter cohort study

박민지,백희선,송지연,최나예,안요한,강희경,조민현 대한신장학회 2023 Kidney Research and Clinical Practice Vol.42 No.6

Background: Donor–recipient size mismatching is commonly occurs in pediatric kidney transplantation (KT). However, its effect on graft survival remains unknown. This study aimed to determine the effect of donor–recipient size mismatch on the long-term survival rate of transplant kidneys in pediatric KT. Methods: A total of 241 pediatric patients who received KT were enrolled. The medical records of all patients were retrospectively reviewed, and the correlation between donor–recipient size mismatch and graft function and long-term graft outcome was analyzed according to donor–recipient size mismatch. Results: Recipients and donors’ mean body weight at the time of KT were 34.31 ± 16.85 and 56.53 ± 16.73 kg, respectively. The mean follow-up duration was 96.49 ± 52.98 months. A significant positive correlation was observed between donor–recipient body weight ratio (DRBWR) or donor–recipient body surface area ratio (DRBSR) and graft function until 1 year after KT. However, this correlation could not be confirmed at the last follow-up. The results of long-term survival analysis using Fine and Gray’s subdistribution hazard model showed no significant difference of the survival rate of the transplant kidney according to DRBWR or DRBSR. Conclusion: Donor–recipient size mismatch in pediatric KT is not an important factor in determining the long-term prognosis of transplant kidneys.

청소년의 학교적응 변화에 따른 잠재계층분류와 내재화 문제 및 부모 방임의 영향력 분석

박민지,유미숙 한국청소년시설환경학회 2020 청소년시설환경 Vol.18 No.3

The purpose of this study is to investigate potential groups of youths' school adaptation change patterns and to examine the effects of parental neglect and adolescents' internalization problems (depression, social withdrawal). The Korean Youth Panel Survey (2,378 people), a 4th cohort, was used for analysis, and 5 years of data were used for analysis. They were analyzed by Latent Class Growth Analysis(LCGA), Growth Mixture Model(GMM), Logistic Regression. As a result of the study, first, it was found that school adaptation increased over time and after then decreased.. Second, the two potential characteristics of the school adaptation variable were identified as a'unchanged group' that does not change over time and a'adapted increase group' that changes negatively over time. Third, depression did not significantly affect the potential class, and social withdrawal and parental neglect were identified as factors affecting school adaptation. 본 연구의 목적은 청소년 학교 적응 변화 양상의 잠재적인 집단을 조사하고 부모의 방임과 청소년의 내면화 문제(우울, 사회적 위축)의 영향을 조사하는 것이다. 이를 위해 한국아동·청소년패널 데이터(Korean Children & Youth Panel Survey)의 초4 코호트인 2,378명을 분석에 사용하였으며, 5년치 자료를 분석에 활용하였다. 분석 방법은 첫 번째로 잠재성장모형 분석을 실시하고, 두 번째로 개체 간 질성을 규명하기 위하여 성장혼합 모델(Growth Mixture Model)을 적용하였다. 마지막으로 분류된 잠재계층을 중심으로 개체 간 효과(between effect)를 분석하기 위하여 로지스틱 회귀분석(logistic regression)을 실시하였다. 연구 결과, 먼저 학교 적응 변인의 단일계층 잠재성장 모형 추정 결과 학교 적응이 시간이 지남에 따라 증가하고 그 후에 감소한 것으로 나타났다. 둘째, 학교 적응 변수의 두 가지 잠재적 특성은 시간이 지나도 안정적인 '무변화집단'과 시간이 지남에 따라 부정적으로 변화하는 '부적응증가집단'으로 확인되었다. 셋째, 우울증은 잠재적 계급에 큰 영향을 미치지 않았으며 사회적 위축과 부모의 방임이 학교 적응에 영향을 미치는 요인으로 확인되었다.

컴퓨터 시뮬레이션을 이용한 하수배제방식 변경에 따른 하수처리장 운영 진단에 관한 연구

박민지,한인섭,이영신,오대민 한국도시환경학회 2016 한국도시환경학회지 Vol.16 No.2

증강현실 애플리케이션을 이용한 체험마케팅 사례연구

박민지,김윤지,나소라,양윤주,고혜영 한국컴퓨터그래픽스학회 2012 한국컴퓨터그래픽스학회 학술대회 Vol.2012 No.6

Major royal jelly protein 2 acts as an antimicrobial agent and antioxidant in royal jelly

박민지,김보연,박희근,Yijie Deng,윤형주,최용수,이광식,진병래 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3

Royal jelly (RJ) is a well-known functional and medicinal food for human health promotion. Major royal jelly proteins (MRJPs), which are the major protein components in RJ, exhibit antimicrobial activities. However, the identities of the MRJPs of RJ responsible for its antioxidant effects have remained unclear. Here, we report that honeybee (Apis cerana) MRJP 2 (AcMRJP2) acts as an antimicrobial and antioxidant agent in RJ. Using recombinant AcMRJP2, which was produced in baculovirus-infected insect cells, we established the antimicrobial and antioxidant roles of MRJP 2. AcMRJP2 bound to the surfaces of bacteria, fungi, and yeast, which then induced structural damage in the microbial cell walls and led to a broad spectrum of antimicrobial activities. AcMRJP2 protected mammalian and insect cells via the direct shielding of the cell against oxidative stress, which led to reduced levels of caspase-3 activity and oxidative stress-induced cell apoptosis, followed by increased cell viability. Moreover, AcMRJP2 exhibited DNA protection activity against reactive oxygen species (ROS). Our data indicate that AcMRJP2 could play a crucial role as an antimicrobial agent and antioxidant in RJ, suggesting that MRJP 2 is a component responsible for the antimicrobial and antioxidant activities of RJ.

Enhancement of Triboelectric Nanogenerators Output Performance by Optimizing Sulfur Content and Geometry of Sulfur-Rich Polymer

박민지,조웅비,김성수,위정재 한국고분자학회 2023 한국고분자학회 학술대회 연구논문 초록집 Vol.48 No.2

중국 남서부의 Kejie 유역을 대상으로 토지이용과 기후 변화에 따른 수문과정 변화

박민지,박근애,김성준,Park, Min-Ji,Park, Guen-Ae,Kim, Seong-Joon 한국관개배수위원회 2009 한국관개배수논문집 Vol.16 No.1

가와사키 병 환아에서 관상동맥 합병증의 예측인자

박민지,전인상,차한,조강호,정미진,최덕영 대한소아청소년과학회 2009 Clinical and Experimental Pediatrics (CEP) Vol.52 No.10

Purpose:Kawasaki disease—the most common cause of acquired heart disease in children—incidence is increasing yearly. Therefore, we evaluated the predictive indicators of coronary complications of Kawasaki disease based on clinical and laboratory data. Methods:Between January 2005 and March 2008, of the 201 children with Kawasaki disease treated at the Gil Hospital of Gachon University of Medicine and Science, 51 had coronary artery lesions (Group II) and 150 had no lesions (Group I). The reasons for coronary artery lesions were deduced from the clinical and laboratory data. Results:Analysis of the 2 groups revealed that fever duration and days of fever after and before initial intravenous gammaglobulin (IVIG) treatment were significantly longer in Group 2 than in Group I. IVIG infusions were statistically higher in Group II than in Group I. As per the laboratory data, C-reactive protein (CRP) value was significantly higher in Group II. Collectively, >10 days of fever duration, >48 h of fever duration after, and >10 days of fever before IVIG treatment increased the risk of coronary artery lesions 6-, 5-, and 3.5-fold, respectively. Furthermore, additional IVIG courses and higher CRP level increased the risk of coronary artery lesions 4-fold and 2–3-fold, respectively. Conclusion:The following 3 factors were responsible for increased risk of coronary artery lesions in children with Kawasaki disease: fever duration and days of fever after and before IVIG treatment. To identifythe predictive indicators of coronary complications, it is necessary to further elucidate the relationship between well-known forecasting factors. 목적:현재 소아 연령에서 가장 흔한 후천적 심질환의 원인이 되고 있는 가와사키 병은 해마다 발병률이 증가하고 있으며 합병증 발생 또한 증가될 것으로 예상된다. 따라서 가와사키 병 환아의 임상적 소견, 검사실 소견을 바탕으로 가와사키 병의 관상동맥 합병증을 예측할 수 있는 인자를 알아보고자 하였다. 방법:가천의과학대학교 길병원 소아과에서 2005년 1월부터 2008년 3월까지 가와사키 병으로 진단 및 치료를 받은 환아 201명을 대상으로 관상동맥 병변이 없었던 군(group I; 150명)과 있었던 군(group II; 51명)로 나누어 임상적 소견과 검사실 소견을 비교하였고 이 때 선별된 인자들을 바탕으로 관상동맥 병변에 미치는 영향을 도출하였다. 임상적 소견으로는, 나이, 성별, 총 발열기간, IVIG 투여 후 지속된 발열기간, 발열 후 치료 시작되기까지 걸린 기간, IVIG 총 투여횟수, 관상동맥 병변 여부, 검사실 소견으로는, 총 백혈구 수, 중성구 수, 혈색소, 적혈구 용적, 혈소판 수, 혈구침강속도, CRP, 알부민, 총 콜레스테롤, 중성지방 등의 수치가 사용되었다. 결과:두 집단 간의 비교분석에서는, 2군(group II) 이 총 발열기간(P<0.05), IVIG 투여 후 지속된 발열기간(P<0.05), 발열 후 IVIG 치료 시작되기까지 걸린 기간(P<0.05)에서 1군(group I)보다 유의하게 길었다. 치료기간 동안 IVIG 투여 횟수는 1군(group I)이 2군(group II)보다 통계적으로 유의하게 낮은 결과를 보였다(P<0.05). 검사실 소견은 CRP 수치가 2군(group II)에서 의미 있게 높았으나 그 외의 다른 수치들은 양 군 간의 유의한 차이를 보이지 않았다. 앞서 선별된 인자들 중에서, 총 발열기간이 10일 이상일 때, IVIG 투여 후 48시간동안 열이 지속될 때, 발열 후 10일 이상 치료가 지연된 경우에, 각각 약 6배(OR= 5.95, P=0.003) 5배(OR=5.11, P=0.005) 3.5배(OR=3.47, P=0.049) 관상동맥 병변 위험이 증가하였다. 또한 IVIG 초 치료보다 IVIG 재 치료(2회 이상)인 경우가 관상동맥 병변 위험이 4배(OR=4.02, P=0.001) 증가하였다. CRP는 6 mg/dL 미만인 집단에 비해 관상동맥 병변 위험이 6-9 mg/dL인 집단에서는 2배(OR=2.32, P=0.049), 9 mg/dL 이상인 집단은 3배(OR= 3.18, P=0.003)로 CRP 수치의 증가에 따라 위험도가 증가하는 양상을 보였다. 그러나 위의 다섯 인자를 다변량 분석을 시행하였을 때 의미 있는 위험인자는 IVIG 재 치료(2회 이상) 경우(OR=5.29, P=0.034)와 CRP 6-9 mg/dL (OR=2.63, P= 0.040), 9 mg/dL 이상(OR=2.84, P=0.014)만이 확인되었다. 결론:기존 연구와 마찬가지로, 본 연구에서도 발열기간은 관상동맥 병변의 위험도와 가장 관련이 깊은 것으로 나타났으며 가와사키 병의 치료에 있어서 발열 후 IVIG의 신속한 투여로 인해 총 발열기간을 줄이려는 노력의 중요성이 확인되었다. 관상동맥 합병증의 예측인자를 선별하기 위해서는 기존의 알려진 예측인자 간의 연관성을 밝히고 객관화된 평가법의 마련을 위한 추가적인 연구가 더 필요할 것으로 사료된다.

패션 버티컬 플랫폼 개인화 추천시스템의 사용자 경험에 관한 연구 -자기조절초점의 조절효과-

박민지,박현희,구양숙 한국의류학회 2023 한국의류학회지 Vol.47 No.4

This study aims to validate the user experience associated with the personalized recommendation systems of fashion vertical platforms. The investigation focused on women aged 18 to 30 with prior experience using personalized fashion recommendation systems. The collected data were analyzed using SPSS 26.0 and AMOS 26.0, and the outcomes can be summarized as follows. Firstly, the diversity and usefulness of information quality exerted a positive effect on use satisfaction. Secondly, the affirmative impact of the reliability of system quality on user satisfaction was established, although stability was not confirmed. Thirdly, the study identified a favorable connection between ease-of-use of service quality and user satisfaction, while the influence of tangibles was unsubstantiated. Fourthly, the degree of self-reference was found to have a positive effect on user satisfaction. Fifthly, a constructive relationship emerged between user satisfaction and both continuous-use intention and recommendation intention. Lastly, there was a significant difference in the magnitude of the effect of ease-of-use on satisfaction according to self-regulatory focus. The findings of this study hold the potential to enhance the explanatory and predictive power of the field of consumer behavior within the novel shopping landscape of fashion vertical platforms.