충주 다목적댐의 기후변화 대응을 위한 ICT 기반 편익 증대 방안 연구

배창용(Chang-young Bae),장암(Am Jang) 대한환경공학회 2018 대한환경공학회지 Vol.40 No.8

최근 기후변화로 인한 홍수, 가뭄, 한파, 폭설 등의 기상재해가 빈번하게 발생하고 있으며, 이러한 현상은 전 지구적으로 더욱 가속화 될 것으로 전망되고 있어 종합적인 대책 마련이 요구된다. 우리나라의 경우 기후변화를 완화하기 위한 노력 없이 현재 추세대로 온실가스를 계속 배출한다면(RCP 8.5) 21세기 후반기(2071년~2100년)에는 평균 기온이 현재 보다 5.7℃ 상승한 16.7℃ 정도로 예상되며, 연평균 강수량 또한 현재 대비 17.6% 증가하는 것으로 예측되어 홍수, 가뭄 등 증가하는 자연재해의 위험으로부터 인명과 재산을 보호하기 위해 보다 전문적인 물관리가 필요한 시점이다. 이에 본 연구에서는 기후변화에 효과적으로 대응하기 위하여 최신 ICT를 활용한 수자원시설(다목적댐)의 과학적인 운영관리 기술과 변화하는 수문상황에 맞춰 수문학적 안정성을 확보하기 위한 충주 다목적댐의 치수 능력 증대 사례를 조사하였다. 또한, 다목적댐의 관리자가 시설운영을 통해 기대할 수 있는 운영수익(용수공급, 수력발전)의 종류와 판매절차 등 수익구조에 대해 살펴보고, 충주 다목적댐의 운영사례를 분석하여 수익을 증대시킬 수 있는 현실적인 방안을 도출하였다. 특히, 2018년도 전력시장의 거래가격 예측을 통해 충주 다목적댐의 연간 전력판매 수익을 전망하고, 시장거래가격이 높은 시간대 발전운영을 통해 발전량의 증가 없이 수익을 향상시킬 수 있는 방안과 그 효과를 계량적으로 제시하였다. Recently, due to the climate change, weather disasters, such as floods, droughts, cold weather and heavy snow, have frequently been occurring, and its frequency is expected to further accelerate around the globe. In Korea, if greenhouse gases continue to be released as the current trend without efforts to mitigate climate change (RCP 8.5), the average temperature will rise 5.7℃ in the second half of the 21st century (2071-2100). Also, annual average precipitation is expected to increase 17.6% compared to current average precipitation, which means more specialized water management is required to protect people and property from the increased risk of flooding and drought. Therefore, in this study, the scientific management technology of water resources facilities (multi-purpose dams) using the latest ICT and the hydrologic stability of changing hydrologic conditions were secured to effectively respond to climate changes. It also examines the types of revenue (water supply, hydro-electric power) that operators of multi-purpose dams can expect from their facility operations, as well as the sales procedures and profit structures. We analyzed the operation cases of the Chung-ju multi-purpose dam and came up with realistic measures to increase our profits. In particular, we were able to predict annual power sales revenue of Chung-ju multi-purpose dam by forecasting the prices in the electricity market in 2018, and to improve profits without increasing power generation volume by operating power generation at the time where market prices are relatively high.

Putting Climate Change into Water Resource Management: Adaptation Efforts in the U.S., U.K., Canada, Australia, and the Netherlands

( Hee Jun Chang ),( Jon Franczyk ),( Deg Hyo Bae ) 한국환경정책평가연구원 2006 환경정책연구 Vol.5 No.4

기후변화가 지역의 수자원에 영향을 미칠 것으로 예상됨에 따라 수자원 관리자들은 이에 대응한 적응전략을 수립하는 것이 필요하다. 이에 본고에서는 미국, 영국, 캐나다, 오스트렐리아, 네덜란드의 적응관리의 실태를 검토하였다. 이들 나라들은 현재의 수자원 관리관행, 제도적 장치, 기후변화의 잠재적 수자원 영향에 따라 매우 상이한 적응관리를 하고 있다. 이들 나라들의 비교연구를 통하여 기후변화에 따른 한국에서의 지속가능한 수자원 관리를 위한 정책적 관련성을 도출하였다. As global climate change is expected to influence regional water resources, water resource managers need to establish adaptive management to cope with climate change. We examined adaptive management efforts in the US, UK, Canada, Australia, and the Netherlands. Each country is implementing different levels of adaptation efforts based on current water management practices, institutional arrangements, as well as the varying degree of water availability, current climate effects and expected climate change effects. Based on the comparison of these countries, we suggest policy implications for the sustainable water resource management of Korea under climate changes.

FC 2-8 : Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.-

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

MaxEnt 모델링을 이용한 기후변화 시나리오에 따른 서어나무 (Carpinus laxiflora)와 개서어나무 (C. tschonoskii)의 분포변화 예측

이민기 ( Min-ki Lee ),천정화 ( Jung-hwa Chun ),이창배 ( Chang-bae Lee ) 한국농림기상학회 2021 한국농림기상학회지 Vol.23 No.1

Hornbeams (Carpinus spp.), which are widely distributed in South Korea, are recognized as one of the most abundant species at climax stage in the temperate forests. Although the distribution and vegetation structure of the C. laxiflora community have been reported, little ecological information of C. tschonoskii is available. Little effort was made to examine the distribution shift of these species under the future climate conditions. This study was conducted to predict potential shifts in the distribution of C. laxiflora and C. tschonoskii in 2050s and 2090s under the two sets of climate change scenarios, RCP4.5 and RCP8.5. The MaxEnt model was used to predict the spatial distribution of two species using the occurrence data derived from the 6^th National Forest Inventory data as well as climate and topography data. It was found that the main factors for the distribution of C. laxiflora were elevation, temperature seasonality, and mean annual precipitation. The distribution of C. tschonoskii, was influenced by temperature seasonality, mean annual precipitation, and mean diurnal rang. It was projected that the total habitat area of the C. laxiflora could increase by 1.05% and 1.11% under RCP 4.5 and RCP 8.5 scenarios, respectively. It was also predicted that the distributional area of C. tschonoskii could expand under the future climate conditions. These results highlighted that the climate change would have considerable impact on the spatial distribution of C. laxiflora and C. tschonoskii. These also suggested that ecological information derived from climate change impact assessment study can be used to develop proper forest management practices in response to climate change.

Factors associated with inflammatory change of epidermal cyst

( Jisang Yun ),( Kyung-nam Bae ),( Jin-hwa Son ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byungsoo Kim ),( Moon-bum Kim ),( Kihyuk Shin ) 대한피부과학회 2021 대한피부과학회 학술발표대회집 Vol.73 No.1

Background: Epidermal cysts (EC) are the most common tumors found on the skin and accompanying inflammation is also frequent. However, the predictors for inflammatory change have not been investigated yet. Objectives: This study was performed to investigate the difference between inflamed and uninflamed epidermal cysts, and to assess associated factors for inflammatory change. Methods: We analyzed the biopsy-proven 1723 epidermal cysts (515 inflamed and 1208 uninflamed) at two tertiary hospitals from 2011 to 2021. Results: The proportion of inflamed epidermal cysts (IEC) and uninflamed epidermal cyst (UIEC) were 29.9 % and 70.1 %, respectively. Inflammatory change was less frequently observed on the face (25.5 %) than the other sites (32.1 %) (p=0.0046). The anatomic location with the highest rate of inflammatory change was back (40.8 %, p=0.0004). Mean duration of inflammatory change from UIEC to IEC on the face was shorter than the other sites (12.5 months vs 17.9 months, respectively, p= 0.0473). On ultrasonography, long axis of IEC (20.7mm) was generally longer than that of UIEC (15.7mm) (p=0.0218). Moreover, Inflammatory change was more frequent on the EC with punctum compared to those without punctum (35.3 % vs 30.3 %, P=0.0471). Conclusion: Based on the location, size and presence of punctum, decision on the optimal treatment strategies can be established when encountering patients with EC.

Putting Climate Change into Water Resource Management: Adaptation Efforts in the U.S., U.K., Canada, Australia, and the Netherlands

Chang, Hee-Jun,Franczyk, Jon,Bae, Deg-Hyo Korea Environment Institute 2006 환경정책연구 Vol.5 No.4

기후변화가 지역의 수자원에 영향을 미칠 것으로 예상됨에 따라 수자원 관리자들은 이에 대응한 적응전략을 수립하는 것이 필요하다. 이에 본고에서는 미국, 영국, 캐나다, 오스트렐리아, 네덜란드의 적응관리의 실태를 검토하였다. 이들 나라들은 현재의 수자원 관리관행, 제도적 장치, 기후변화의 잠재적 수자원 영향에 따라 매우 상이한 적응관리를 하고 있다. 이들 나라들의 비교연구를 통하여 기후변화에 따른 한국에서의 지속 가능한 수자원 관리를 위한 정책적 관련성을 도출하였다. As global climate change is expected to influence regional water resources, water resource managers need to establish adaptive management to cope with climate change. We examined adaptive management efforts in the US, UK, Canada, Australia, and the Netherlands. Each country is implementing different levels of adaptation efforts based on current water management practices, institutional arrangements, as well as the varying degree of water availability, current climate effects and expected climate change effects. Based on the comparison of these countries, we suggest policy implications for the sustainable water resource management of Korea under climate changes.

카드뮴 측적량과 붕어(Carassius auratus) 아가미 조직 변화의 상관성에 관한 연구

배희경,김은경,남성숙,문창규,전성환,나진균,박광식 한국환경독성학회 2002 환경독성보건학회지 Vol.17 No.1

Histopathological changes and cadmium accumulations in the gills were investigated in crucian carp (Carassius auratus) exposed to 0, 0.01, 0.1, 0.5 mg/l cadmium (Cd)concentrations for 25 days. After 25 days of exposure, cadmium accumulations increased in each of the different exposure concentrations. Histopathological changes in the gills of curcian carp exposed to cadmium included the acidification of mucous cell, the terminal clubbing of lamellae, the hyperplasia of epitherial cell and the curved of secondary lamellae. The similar histopathological changes were observed once the accumulations of cadmium reached the similar levels found in the present study with the different exposure schemes. Also the acidification of mucous cell in gills appeared when cadmium accumulations reached 5 ㎍/g and more. These results suggested that histopathological changes in the gills, an appearance of mucous cell acidification, be used to estimate the relation between toxic effect and cadmium accumulations in the gills.

S-580 : Vitamin D and carotid subclinical atherosclerosis in SLE

( Chang Bum Bae ),( Ju Yang Jung ),( Bo Ram Go ),( Hyun Ah Kim ),( Chang Hee Suh ) 대한내과학회 2013 대한내과학회 추계학술대회 Vol.2013 No.1

Vitamin D and carotid subclinical atherosclerosis in SLE Chang-Bum Bae, Ju-Yang Jung, Bo-ram Go, Hyun-Ah Kim, Chang-Hee Suh Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea Introduction Atherosclerosis develops earlier in systemic lupus erythematosus (SLE) and is the important cause of mortality. It has been suggested that vitamin D deficiency contributed cardiovascular disease and immune dysregulation in SLE. Methods One-hundred two female patients with SLE and 52 normal controls (NC) were recruited. The carotid artery intima-media thickness (cIMT) and plague were assessed by B-mode ultrasound at the carotid artery level. Vitamin 25(OH)D3 levels were checked by immunoradiometric assay using the Bio-Line 25(OH)D3-Ria CT kit (Bio-Line S.A., Belgium). Disease activity markers were checked at the time of enrollment. Results The cIMT of SLE is 0.41±0.08mm, which is higher than NC (0.37±0.11 mm, p=0.012). Also, carotid artery plague index (PI) of SLE is higher than NC (0.68±1.39 vs 0.26±0.87, p=0.026). The cIMT was correlated with age (r=0.442, p<0.001), body mass index (r=0.246, p=0.013), waist-hip ratio (r=0.245, p=0.013), SLE disease activity index (r=0.239, p=0.016), taking aspirin (r=0.244, p=0.013), and the carotid artery PI was correlated with renal involvement (r=0.224, p=0.023) in patients with SLE. Vitamin 25(OH)D3 was not showed correlation with cIMT and carotid artery PI. Also, it was not correlated with disease activity markers. Conclusion In patients with SLE, the risk of cardiovascular disease measured by cIMT and carotid artery plaque was higher than NC, which may be derived from systemic inflammation. However, vitamin D levels were not showed significant correlations with carotid subclinical atherosclerosis. It may be not suitable to assess vitamin D as marker of disease activity or subclinical atherosclerosis.

체육교과 평가방식에 대한 소비자 의견 분석

모창배,유인영,김정식 청주대학교 학술연구소 2004 淸大學術論集 Vol.2 No.-

To collect customers opinion about physical education estimation system, this study targeted on 3rd grade students at academic high schools in Cheongju-city and Chungju-city in Chungcheongbuk-do. Main subjects of the study are each 4 classes in boys high school and girls high school. This paper examines the feasibility of estimation system change in the result of collecting customers opinion about estimation factors like reflection of school record and change, time factors like time obstacle and exercise ability, ability factors like influence and contents of school record, result factors like fairness of estimation, course factors like necessary and value of estimation and academic factors like private education expenses and its reduction. Based on the above result, it analyzes certification and correlation by item, sex and factor focused on every factor. Study materials are managed by SAS Package(Window Ver. 6.11). In the result of correcting customers opinion about the above estimation system, it shows as follows: First, it showed the difference by sex in change and reflection of physical education estimation system, change and influence of school record and necessary and value of estimation contents. Second, many male students supported items about exception and reflection of school record in physical education. It showed that most of students asked to change estimation system. Third, it showed time obstacle by students exercise ability in physical education estimation system. Male students have more obstacles to study other subjects than female ones. Fourth, it showed that many students asked to change estimation system not by influence of school record but by exercise ability. Fifth, it showed that many students emphasized fairness in estimation results by teachers. Sixth, in the case of male students, they asked enjoy activity and in the case of female ones, they asked physical development and health maintenance. Most students replied that physical education is necessary subject regardless of estimation. Seventh, Most students replied that physical education estimation system is not cause of increasing private education expenses directly. Eighth, students at academic high school have much correlation with estimation, time, ability, result and academic factor. On the other hand, it showed that subject factor did not much correlation with other factors.

최고경영자 교체가 감사시차에 미치는 영향 : 감사보고시차를 중심으로

배창현(Bae Chang Hyun) 한국산업경영학회 2016 한국산업경영학회 발표논문집 Vol.2016 No.-

본 연구는 최고경영자 교체와 감사보고시차 간의 상관관계를 분석하여, 최고경영자 교체로 인한 정보비대칭에 대해 감사인이 어떻게 대응하는지 살펴보는데 연구 목적이 있다. 관련 선행연구에서는 최고경영자 교체에 가장 큰 영향을 미치는 요인으로 기업성과를 제시하고 있는데, 기업의 성과가 저조할수록 최고경영자 교체가 많이 발생하는 것으로 보고하고 있다. Sohn et al.(2014)에 따르면, 최고경영자가 교체된 기업일수록 불성실공시기업으로 지정될 확률이 높으며 재무분석가의 예측 정확도도 감소하는 것으로 나타났다. 뿐만 아니라, 자본시장의 경우 교체된 신임경영자의 big bath를 통한 증대된 불투명성에 대해 부정적인 평가를 하는 것으로 나타났다. 이처럼 최고경영자 교체는 경영자의 이익조정 수단으로 사용되기 쉽고, 외부 이해관계자와의 정보비대칭을 초래할 것으로 예측된다. 즉, 최고경영자 교체가 이루어진 기업의 경우, 외부감사인들은 이들 기업의 위험(감사위험)이 높다고 판단할 것이기 때문에 보다 더 감사노력을 투입할 것이며 이는 감사보고시차의 증대로 나타날 것이다. 분석결과, 최고경영자 교체는 종속변수인 감사보고시차와 통계적으로 유의한 양(+)의 관련성을 나타냈다. 이는 최고경영자가 교체된 기업일수록, 회계정보의 신뢰성 감소 및 기업경영의 불투명성으로 이어질 수 있기 때문에 감사인들은 이들 기업의 외부감사를 보다 보수적으로 접근(신중히)하는 것으로 해석된다. This study empirically investigates the effect of a CEO turnover on ARL. The object of this study is to provide empirical evidence for the responses of both the CEO and the external auditor on audit risk increases and information asymmetry that occur as a result of a CEO turnover. According to the previous study on CEO turnovers, the CEO turnover would increase audit risk and information asymmetry (Sohn et al., 2014). It is expected that an external auditor spends a large amount of time on audit procedures to lower the audit risk when the CEO changes. Therefore, the CEO turnover would have a conflicting effect on the ARL. The results of the analysis are as follows. The ARL increases when the CEO changes, which suggests that an external auditor spends a great amount of time on audit procedures to lower the audit risk because the audit risk increases when the CEO changes. Additionally, the ARL increases when the frequency of CEO turnover increases. An external auditor would estimate the audit risk as being high if the CEO changes more frequently. To lower the audit risk to an acceptable level, many audit hours are spent on audit procedures by an external auditor, which increases the ARL.