• Stress
• /
• v.26 no.4
• /
• pp.350-355
• /
• 2018

Background: The purpose of this study is to investigate the mediating effect of negative problem orientation in the association between intolerance uncertainty and worry. Methods: Participants who were 531 undergraduate students in Chungbuk were administered Intolerance Uncertainty Scale (IUS), Negative Problem Orientation (NPO; SPSI-R), Penn State Worry Questionnaire (PSWQ). Results: The results are as follows. Intolerance of uncertainty had statistically significant positive correlation with worry. Negative problem orientation had a partial mediating effect in the association between intolerance uncertainty and worry. Conclusions: This result suggested the importance of intolerance of uncertainty and negative problem orientation in psychological approach to university students who have difficulty in worry.

• Pediatric Gastroenterology, Hepatology & Nutrition
• /
• v.2 no.2
• /
• pp.178-184
• /
• 1999

Purpose: The aims of this study were to evaluate the clinical manifestations and prognosis of the syndromic and nonsyndromic intrahepatic bile duct paucity (IHBDP). Methods: We studied histology of 42 infants with neonatal cholestasis. Fourteen patients were diagnosed as IHBDP. We evaluated the clinical manifestations, courses and prognosis retrospectively. Results: Underlying disease of the 42 infants with neonatal cholestasis were biliary atresia in 23, intrahepatic bile duct paucity in 14 (Alagille syndrome in 4 and nonsyndromic IHBDP in 10), neonatal hepatitis in 5 infants. The mean ratio of the bile ducts per portal tract was 0.087 (range: 0~0.5). The manifestations in 4 patients with Alagille syndrome demonstrated as follows: characteristic face in 3, chronic cholestasis in 4, posterior embryotoxon in 2, vertebral anomalies in 2, peripheral pulmonary stenosis in 2. One of 4 patients of Alagille syndrome improved cholestasis and the other 3 patients were remained their cholestasis and growth retardation. All patients of the nonsyndromic IHBDP were idiopathic. Seven out of 8 patients of nonsyndromic IHBDP showed improvement of cholestasis, and one patient received liver transplantation due to cirrhosis. Conclusion: This study suggested that IHBDP should be considered in the differential diagnosis of neonatal cholestasis. The outcome of idiopathic IHBDP was better than predicted.

• Journal of Korea Water Resources Association
• /
• v.55 no.12
• /
• pp.1021-1030
• /
• 2022

Currently, South Korea implements water resources management policies focusing on integrated water quantity, quality and hydro-ecology management. In particular, rehabilitation of natural rivers has become a major issue. As for reservoir operation during non-flood season, efforts have been made continuously to apply the Deficit Supply Method that can maximize water supply to address droughts and increase in water demand. When Deficit Supply Method is applied, the water supply capacity of reservoir can be maximized. However, downstream water flow would remain constant. In consideration that a natural stream, a long-time-created hydro-ecology, can be significantly influenced by flow variability, the Deficit Supply Method-based reservoir operation can generate effective water supply. Still, it may trigger adverse effects from the aspects of natural rehabilitation and hydro-ecology recovery. The main objective of this study is to analyze impacts on downstream flow duration through reservoir simulation by comparing the Firm Supply Method, the Deficit Supply Method and the Selective Deficit Supply Method, and examining each method's effects on reservoir operation. This study found that the Firm Supply Method could maintain water flow variability, but could not maximize water supply capacity. When the Deficit Supply Method was applied, water supply capacity could be increased while remaining vulnerable regarding water flow variability, as a difference between average flow and low flow was negligible at downstream. In comparison, the Selective Deficit Supply Method was found to sustain time-based reliability at 95% or higher, whereas downstream flow duration could be maintained at a level similar to the level generated by the Firm Supply Method.

• Journal of Korea Water Resources Association
• /
• v.47 no.11
• /
• pp.997-1005
• /
• 2014

This study evaluated hydrological drought the using the annual minimum flow and the annual maximum deficit method and proposed the new concept of water deficit-duration-frequency curves similar to rainfall intensity-duration-frequency curves. The analysis results of the annual minimum flow, the return periods of hydrological drought in the most duration of 1989 and 1996yr were the longest. The analysis results of the annual maximum deficit, the return periods of 60-days and 90-day deficit which are relatively short duration were the longest in 1995yr, about 35-year, Hydrological drought lasted longer was in 1995, the return period was about 20-year. Though duration as well as magnitude is a key variable in drought analysis, it was found that the method using the annual minimum flow duration not distinguish duration.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2017.05a
• /
• pp.435-435
• /
• 2017

최근 태국 짜오프라야강 유역의 물 부족 문제 해결을 위해 한국 정부와 태국 정부간 G2G사업으로 "태국 짜오프라야강 유역과 인근 유역 연계 수자원개발 마스터플랜 수립"이 추진되고 있다. 본 연구에서는 장기간 가뭄 등으로 물 부족 문제가 심각한 태국 짜오프라야강 유역에 대하여 다각적인 추가용수 공급방안을 검토하고 이를 토대로 수자원 장기 종합계획을 수립하기 위한 태국 짜오프라야강 유역의 물수급 현황 및 향후 전망을 분석하고자 한다. 본 연구에서는 ModSim 8.5 모형을 통해 물수급 현황 및 전망을 분석하였으며 대상유역은 짜오프라야강 유역과 인접한 유역 7개 유역(Ping, Wang, Yom, Nan, Sakae Krang, Pasak, Chao Phraya)을 대상으로 하였으며 총 유역면적은 $195,718km^2$로 우리나라 면적의 2배에 달한다. 또한 물수지 분석을 위한 입력자료 구축은 총 30년간(1986년 1월 1일 ~ 2013년 12월 31일)의 소유역별 자연유입량, 용수수요량(생활, 공업, 농업) 및 환경유량으로 구축하였으며 대상유역의 대규모 시설물인 19개소의 댐에 대한 제원도 태국 현지 기관을 통해 확보하여 물수지 분석에 적용하였다. 물수지 분석시 적용된 용수수요량에 대한 공급우선순위는 환경유량, 생할용수, 공업용수, 농업용수순이며 동일 용수의 경우 상류에 위치한 수요량에 우선순위를 우선적으로 부여하였다. 각 수요량에 대한 회귀율은 태국 물수급 해석 조건에 맞춰 환경유량 100%, 생공용수 0%, 농업용수 50%로 적용하였다. 연구결과, 2015년을 대상으로 분석한 불수급 현황은 생공용수의 경우, Ping과 Wang 유역에서만 수요량 대비 10~30%정도 부족량이 발생한데 반해 농업용수의 경우, 전 유역에서 약 20~40% 정도의 부족량이 발생하고 있으며 2025년 및 2035년을 대상으로 분석한 물수급 전망은 2015년 현황과 유사하나 부족량의 심도를 더욱 커지고 범위도 넓어지는 경향을 나타내고 있으며 농업용수의 경우 전유역에서 약 20~50%정도의 부족량이 발생하였으며 가장 극한 부족이 발생한 소유역은 80%까지도 발생될 것으로 전망되었다.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2020.06a
• /
• pp.367-367
• /
• 2020

최근 전세계적으로 기후변화로 인해 가뭄의 발생 가능성이 높아지고 있으며 그에 대한 인적피해와 경제적 손실로 인한 피해액은 증가하고 있다. 특히, 국내의 충남지역은 최근 강수량이 평년 대비 75% 수준으로 감소하고 있으며, 지속적인 가뭄이 발생하여 용수 확보에 어려움을 겪고 있다. 또한, 2015년에는 강수량 감소로 인해 보령댐을 상수원으로 사용하고 있는 충남 서북부지역 8개 시군의 용수공급에 큰 차질이 있었다. 지속적인 가뭄 상황이 반복되면서 기후변화의 영향에 따라 미래의 물공급량 변화 및 물부족에 대한 연구와 이를 분석하여 정확성을 높이는 물수지 분석모형이 지속적으로 개발되고 있다. 이에 본 연구에서는 가뭄이 발생한 충남지역을 대상으로 기후변화에 따른 미래 물부족 변화에 대한 경향성을 파악하고자 한다. 미래의 물부족 변화를 파악하기 위해 기상청 RCP 8.5 시나리오의 40년(2008~2047년) 중권역별 강수량과 잠재증발산량 일단위 자료를 수집하였다. 수집된 중권역별 기상자료를 하천유역별 일단위 기상자료를 활용하여 TANK 모델을 이용한 하천 일유출모의와 비유량법을 이용하여 저수지의 일유량을 산정하였다. 미래의 수혜면적변화와 생활/공업/농업 수요량 추정을 통해서 하천 및 저수지 물수지 분석을 진행하여 미래기간 30년에 대한 일단위 물수급을 산정하였다. 미래기간에 대한 분석은 기준기간 R0(2008~2017년) 대비, 미래기간 S1(2018~2027년), S2(2028~2037년), S3(2038~2047년)에 대한 연평균 물부족량과 경로별 경향성을 파악하였다. 대상지역의 물부족량에 대한 분석결과, 기준기간 대비 S1, S2, S3 기간에 각각 27.8%, 10.8%, 23.1% 감소하는 경향이 나타났다. 이는 미래의 강우량이 점차 증가하는 경향과 수혜면적 변화시 논과 밭 면적이 지속적인 감소로 인해 수요량에 영향을 받았을 것으로 판단된다. 본 연구 결과를 바탕으로 장래 하천유역의 가뭄에 대한 피해 예측 및 물수급 파악에 활용될 수 있을 것으로 판단된다.

• Journal of Environmental Impact Assessment
• /
• v.27 no.3
• /
• pp.267-278
• /
• 2018

With climate change and population growth, there are significant increases in water scarcity. There have been water security assessments to abate the gap between water demand and availability to support water resource management. However, most of the assessments are focusing on the water that flows through either on or below the land surface, failing to consider water that infiltrates and can be used by vegetation. This study presents water scarcity assessment accounting for Blue and Green water concept, and applied the method to Boryung region. Monthly streamflow, evapotranspiration, and soil moisture were estimated by SWAT modeling, and each of them was used to analyze Blue and Green water scarcity. Blue and Green water scarcity had different aspect, and the result indicated the time when water scarcity is more likely to happen. The water scarcity assessment framework presented in this paper provides novel assessment method integrating hydrologic and ecosystem aspects, thereby improving the understanding of how water resources should be managed.

• Korean Journal of Culture and Social Issue
• /
• v.27 no.2
• /
• pp.139-165
• /
• 2021

In this study, we focused on the socio-structural factors that cause ageism, investigating whether the influence of the resource scarcity on ageism in the younger generation depends on socioeconomic status. To test this hypothesis, we conducted an online study of 219 adults in their 20s and 30s. Specifically, participants were randomly assigned to either the resource scarcity priming condition or the control condition, and completed a writing task. After this, participants responded to ageism and socioeconomic status items. As a result, the effect of resource scarcity on ageism was not significant. However, we found that socioeconomic status moderated the impact of resource scarcity on ageism. In other words, resource scarcity priming has been shown to significantly reduce ageism for individuals who have relatively lower socioeconomic status. This finding is in line with previous studies in which people of low socioeconomic status were found to be more sympathetic to socially disadvantaged individuals suffering deleterious situations such as resource scarcity. This work is significant in that we have looked at both the situational and personal factors influencing ageism, and in that we have attempted to examine the causal influence of resource scarcity on ageism through an experimental approach. However, since the alternative explanation of the findings has not been completely excluded, replication through further studies will be necessary.

• The Korean Journal of Coaching Psychology
• /
• v.4 no.1
• /
• pp.1-19
• /
• 2020

The study was intended to explore the relevance of the variables below, assuming that the intolerance of uncertainty and dichotomous thinking would represent sequential serialized effects in the relationship between perfectionistic self-presentation and social anxiety. The data of this study were collected on questionnaire survey of 252 adult men and women in Seoul using perfectionistic self-presentation scale, social interaction anxiety scale, social phobia scale, intolerance of uncertainty scale and dichotomous thinkingI-30R as index, which results are as follow. First, intolerance of uncertainty and dichotomous thinking showed perfect mediation effects on the relationship between perfectionistic self-presentation and social anxiety. Intolerance of uncertainty and dichotomous thinking were identified as contributing factors to the development and preservation of social anxiety by perfectionistic self-presenters. Second, in the relationship between perfectionistic self-presentation and dichotomous thinking, intolerance of uncertainty showed mediation effect. And in the relationship between intolerance of uncertainty and social anxiety, dichotomous thinking showed mediation effect. This suggested that if tolerance of uncertainty was deficient, it was likely to lead to dichotomous thinking. And a dichotomous thinking has prompted or accelerated negative cognitive biases resulting from intolerance of uncertainty, triggering and deepening social anxiety. Lastly, the limitations of this study and future research direction were suggested.

• Health Policy and Management
• /
• v.34 no.2
• /
• pp.106-119
• /
• 2024

Drug shortage is a persistent phenomenon that poses a public health risk worldwide and occurs due to a range of causes. The purpose of this study is to review key policies to prepare for and respond to drug shortages in selected countries, such as the United States, Canada, and some European countries in order to draw implications. This study reviewed the reports and articles derived from search engines and Google Scholar by using keywords such as drug shortage and stock-out. Over the last decade or so, the United States have strengthened requirements on advance notification for disruption and interruption of drug manufacturing, established the Inter-agency Drug Shortages Task Force to promote the communication and coordination of responses, and expedited drug regulatory processes. Similarly, Canada established the Multi-Stakeholder Steering Committee on drug shortages by involving representatives from central and local governments and private sectors. Canada also adopted a tiered approach to the communication of drug shortages based on the assessment of the severity of the shortage problem and released a detailed information guide on communication. In 2019, the joint task force between the European Medicines Agency and the Heads of Medicines Agencies issued guidelines on drug shortage communication in the European Economic Area. The countries reviewed in this paper focus on communication across different stakeholders for the monitoring of and timely response to drug shortages. The efforts to protect public health from the negative impact of the drug shortage crisis would require multi-sectorial and multi-governmental coordination and development of guidelines.