Jeffrey′s Noninformative Prior in Bayesian Conjoint Analysis

Oh, Man-Suk,Kim, Yura The Korean Statistical Society 2000 Journal of the Korean Statistical Society Vol.29 No.2

Conjoint analysis is a widely-used statistical technique for measuring relative importance that individual place on the product's attributes. Despsite its practical importance, the complexity of conjoint model makes it difficult to analyze. In this paper, w consider a Bayesian approach using Jeffrey's noninformative prior. We derive Jeffrey's prior and give a sufficient condition under which the posterior derived from the Jeffrey's prior is paper.

Medicinal Herbs Inhibit Proinflammatory Mediators through the Suppression of JNK and p38 Activation in LPS-Stimulated Raw 264.7 Macrophages

Yura Choi,Seung Tack Oh,Seongmi Lee,Quan Feng Liu,Ha Jin Jung,Songhee Jeon 한국식품영양과학회 2015 한국식품영양과학회 학술대회발표집 Vol.2015 No.8

Erythro-Austrobailignan-6 Downregulates HER2/EGFR/Intergrin β3 Expression via p38 Activation in Breast Cancer

Seung Tack Oh,Yura Choi,Quan Feng Liu,Ha Jin Jung,Songhee Jeon 한국식품영양과학회 2015 한국식품영양과학회 학술대회발표집 Vol.2015 No.8

The Fate of 15N-labeled Organic Materials Applied to Chinese Cabbages Cropping System

Cho-Rong Lee,Yura Oh,Bi-Na Song,Jung A Jung,Jeong-Lai Cho,Sang-Min Lee,Nan-Hee An 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.1

Nitrogen added to farmland is used to plants or remains in soil, or is lost to environment. We incorporated15N-labeled materials (Chemical fertilizer (CF), green manure (GM), livestock compost (LC), GM+LC, andoil cake (OC) to soil and cultivated Chinese cabbages (Brassica rapa subsp. pekinensis) and analyzed the 15Nrecovery of crop and soil to investigate the fate of nitrogen. The results follow. The 15Ncrop recovery ofchemical fertilizer (CF) was the highest, and that of organic materials differed by type. The 15Nsoil recovery ofCF was the lowest, and that of organic materials was 3 - 6 times higher than CF. The 15Nloss was not significantlydifference between CF and organic materials (except GM+LC). As results, despite of the same amount ofnitrogen input, there was the difference in plant uptake and soil residue between organic materials and CF. Nitrogen of CF is used to Chinese cabbages more than organic materials, however most of the remainingnitrogen is estimated to be lost to the environment. Therefore, CF might be hard to occur residual effect in thenext cropping season. In organic materials, nitrogen is less used to Chinese cabbages than CF, but remains insoil more than CF. Therefore, organic materials might be useful for improving soil fertility and have a residualeffect in the next cropping season. We suggest that these properties of organic materials should be taken intoaccount in calculating the amount of applied fertilizer in organic farming where mainly organic materials areused. Moreover, it is necessary to investigate the cumulative and residual effects of continuous input of thesame organic materials.

The Fate of <SUP>15</SUP>N-labeled Organic Materials Applied to Chinese Cabbages Cropping System

Cho-Rong Lee,Yura Oh,Bi-Na Song,Jung A Jung,Jeong-Lai Cho,Sang-Min Lee,Nan-Hee An 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.1

Nitrogen added to farmland is used to plants or remains in soil, or is lost to environment. We incorporated <SUP>15</SUP>N-labeled materials (Chemical fertilizer (CF), green manure (GM), livestock compost (LC), GM+LC, and oil cake (OC) to soil and cultivated Chinese cabbages (Brassica rapa subsp. pekinensis) and analyzed the <SUP>15</SUP>N recovery of crop and soil to investigate the fate of nitrogen. The results follow. The <SUP>15</SUP>Ncrop recovery of chemical fertilizer (CF) was the highest, and that of organic materials differed by type. The <SUP>15</SUP>Nsoil recovery of CF was the lowest, and that of organic materials was 3 - 6 times higher than CF. The <SUP>15</SUP>Nloss was not significantly difference between CF and organic materials (except GM+LC). As results, despite of the same amount of nitrogen input, there was the difference in plant uptake and soil residue between organic materials and CF. Nitrogen of CF is used to Chinese cabbages more than organic materials, however most of the remaining nitrogen is estimated to be lost to the environment. Therefore, CF might be hard to occur residual effect in the next cropping season. In organic materials, nitrogen is less used to Chinese cabbages than CF, but remains in soil more than CF. Therefore, organic materials might be useful for improving soil fertility and have a residual effect in the next cropping season. We suggest that these properties of organic materials should be taken into account in calculating the amount of applied fertilizer in organic farming where mainly organic materials are used. Moreover, it is necessary to investigate the cumulative and residual effects of continuous input of the same organic materials.

Fabry disease exacerbates renal interstitial fibrosis after unilateral ureteral obstruction via impaired autophagy and enhanced apoptosis

( Sungjin Chung ),( Mina Son ),( Yura Chae ),( Songhee Oh ),( Eun Sil Koh ),( Yong Kyun Kim ),( Seok Joon Shin ),( Cheol Whee Park ),( Sung-chul Jung ),( Ho-shik Kim ) 대한신장학회 2021 Kidney Research and Clinical Practice Vol.40 No.2

Background: Fabry disease is a rare X-linked genetic lysosomal disorder caused by mutations in the GLA gene encoding alpha-galactosidase A. Despite some data showing that profibrotic and proinflammatory cytokines and oxidative stress could be involved in Fabry disease-related renal injury, the pathogenic link between metabolic derangement within cells and renal injury remains unclear. Methods: Renal fibrosis was triggered by unilateral ureteral obstruction (UUO) in mice with Fabry disease to investigate the pathogenic mechanism leading to fibrosis in diseased kidneys. Results: Compared to kidneys of wild-type mice, lamellar inclusion bodies were recognized in proximal tubules of mice with Fabry disease. Sirius red and trichrome staining revealed significantly increased fibrosis in all UUO kidneys, though it was more prominent in obstructed Fabry kidneys. Renal messenger RNA levels of inflammatory cytokines and profibrotic factors were increased in all UUO kidneys compared to sham-operated kidneys but were not significantly different between UUO control and UUO Fabry mice. Protein levels of Nox2, Nox4, NQO1, catalase, SOD1, SOD2, and Nrf2 were not significantly different between UUO control and UUO Fabry kidneys, while the protein contents of LC3-II and LC3-I and expression of Beclin1 were significantly decreased in UUO kidneys of Fabry disease mouse models compared with wild-type mice. Notably, TUNEL-positive cells were elevated in obstructed kidneys of Fabry disease mice compared to wild-type control and UUO mice. Conclusion: These findings suggest that impaired autophagy and enhanced apoptosis are probable mechanisms involved in enhanced renal fibrosis under the stimulus of UUO in Fabry disease.

Effects of Green Manure-Maize Rotation on Phosphorus Uptake of Crop and Decrease in Phosphorus Accumulation in Organic Upland Soil

Cho-Rong Lee,Yura Oh,Kwang-Lai Park,Jeong-Lai Cho,Nan-Hee An,Sang-Min Lee 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.3

Phosphorus (P) easily accumulates in farmland soil due to their high affinity to cations and clay, and thus their use efficiency of crop is low. Green manure-maize rotation system might be an efficient measure to reduce P accumulation in organic farmland by improving P uptake of crops. This study was conducted to investigatethe effects of green manure-maize rotation on P uptake of maize and excess P removal in organic upland soils. Maize mono cropping and green manure-maize rotation systems (barley (B), hairy vetch (H), mixture of B and H) were established in organic farmland, and the experiments were conducted for 2 years without additional nutrients application. Green manure had a significant impact on maize grain production. Maize P uptake increased with the increased rate of hairy vetch seeding. Water soluble P content in soil was further reduced in green manure-maize rotation systems compared to the mono cropping. The results suggest that green manure-maize rotation system (except barley) without nutrient supplement increases P uptake of maizeand thus decreases soil P accumulation.

Residual Effects of Organic Materials on N Supply to Chinese Cabbage and Soil Under Continuous Cultivation

Cho-Rong Lee,Yura Oh,Jung A Jung,Sang-Min Lee,Nan-Hee An 한국토양비료학회 2020 한국토양비료학회지 Vol.53 No.4

Nitrogen (N) supply from organic materials (OM) takes more time than chemical fertilizer (CF), because mineralization of organic N requires microbial conversion. Most organic N applied to soil remains into SOM. It might have a greater residual effect than CF on soil fertility and crop nutrient uptake and influence on N fate. Residual organic N might have influence on soil fertility and nutrient uptake of crop by depending on N cycling in soil. This study investigated the residual effect of <SUP>15</SUP>N-labeled organic materials on Chinese cabbage N uptake and soil N. <SUP>15</SUP>N-labeled organic materials at rate of 456 ㎏ N/ha applied with green manure (GM), livestock compost (LC), GM+LC, oil cake (OC), and CF into wagner pot (1/2000a) for Chinese cabbage cultivation. During continuous crop cultivation (Sep. 2018 to Mar, 2020), <SUP>15</SUP>N-labeled Chinese cabbage and soil was analyzed by using stable isotope elemental analyzer. Organic materials and chemical fertilizer were higher N uptake in Chinese cabbage than in the control at first cropping season. However, N uptake of Chinese cabbage under continuous cultivation was significantly increased 35-72% at organic material treatments compared to the control. Also, <SUP>15</SUP>N-labeled soil was significantly high at the treatments applied with GM, LC, and GM+LC, but was not at OC and CF treatment. In conclusion, organic materials (especially GM, LC, and GM+LC) had a greater N residual effect on Chinese cabbage and soil than chemical fertilizer.

의료기관인증이 군병원 간호장교(사)의 의료기관 인증평가에 대한 인식과 환자안전관리 활동에 미치는 영향 -인증병원과 비인증병원을 대상으로-

노미영 ( Miyoung Roh ),오유라 ( Yura Oh ) 국군의무사령부 2019 대한군진의학학술지 Vol.50 No.1

Objectives; This study was to evaluate the impact of healthcare accreditation on awareness and patient safety management activities of nursing officers(nurses) in military hospitals. Methods; To find this purposes, 358 nursing officers(nurse) were recruited from 10 military hospitals. And self-administration method were used for this study. SPSS Statistics 25 program were used for the data analysis. Results and Conclusions; In conclusion, healthcare accreditation was positive impacts on awareness and patient safety management activities of nursing officers(nurse) in military hospitals. Healthcare accreditation awareness and patient safety management activities was positive correlation in all of sub-factors. Inner-service improvement, which is a sub-factor of awareness, was a 13% explanatory power for individual patient safety management activities. Patient safety management activities could be improved if medical institution in military tries to improve the system and the awareness of the members.

유기농경지 토양 질 평가지표 선정을 위한 국내외 사례분석

이초롱(Cho-Rong Lee),오유라(Yura Oh),황현영(Hyeon-Yeong Hwang),이상민(Sang-Min Lee) 한국토양비료학회 2021 한국토양비료학회 학술발표회 초록집 Vol.2021 No.11

토양 질(Soil quality)은 토양 기능의 크기로, 농경지 토양 관리 목표가 작물 생산성에서 농산물의 안전성, 환경부하의 최소화, 생태계 보전 등으로 확장되면서 토양 질에 대한 개념도 변화되어 왔다. 이에 맞춰 해외에서는 토양 질 평가 방법을 개발하여 활용하고 있으나 국내에서는 관련 연구가 거의 수행되지 않는 실정이다. 최근 국내 유기농업의 법적 정의가 개정되면서 유기농경지도 안전한 농산물 생산에서 생물다양성, 토양 비옥도, 환경 보전에 대한 중요성이 강조되고 있다. 이에 국내 유기농 토양 질 평가를 위하여 국내외 토양 질 평가방법을 수집하여 평가지표 활용 동향을 알아보고자 하였다. 이에 농촌진흥청에서 2004년 개발한 방법과 미국(SMAF, CASH), 캐나다(National Soil Quality Monitoring Program), 뉴질랜드(SINDI), 호주(National Soil Quality Monitoring Framework), EU 및 중국(iSQAPER), 네덜란드(NSMN) 등 총 8개 방법(7개국)에서 사용되는 이화학성 및 생물학적 특성 지표 활용 현황을 조사하였다. 그 결과 평가방법별로 사용하는 지표가 상이하였으며, 4~16개 지표를 사용하여 토양 질을 평가하였다. 물리성지표로 가장 많이 사용되는 지표는 용적밀도(75%)로, 입단안정성(38%), 유효수분 보유력(38%) 등도 주로 사용되었다. 화학성 지표는 pH(100%), 유기물(75%), 유효인산(75%), EC(63%) 등이 자주 사용되었으며, 생물학적 지표는 Microbial biomass carbon (50%)가 많이 사용되었다. 특히 캐나다를 제외한 미국, 뉴질랜드, 호주, EU 및 중국, 네덜란드 등 6개국은 이화학성과 생물학적 지표를 함께 사용하여 토양 질을 평가하였으나, 생물학적 특성을 간접적으로 측정하는 화학성 지표(T-N, T-C, PMN 등)를 생물학적 지표로 사용하고 있었다. 또한 미국, 네덜란드 등은 최초 제시한 지표 이후에 Labile carbon, PLFA 등 생물학적 지표를 추가 발굴하고 있었다. 위에 열거한 평가지표 후보 중 실용성과 범용성 등을 고려하여 국내 유기농경지의 관리목표에 적합한 토양 질 평가지표를 최종선발하고 각 지표별 평가기준을 마련하여 토양 질 평가 체계를 구축할 필요가 있을 것으로 보인다.