• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.251-252
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• 2022

국가핵심기반은 국가 운영을 위하여 사업의 중단 없이 연속적으로 운영될 필요가 있다. 본 연구에서는 에너지관련 기관을 대상으로 재해를 예방하기 위하여 위험작업의 위험도 평가와 위험수준에 맞는 적절한 관리순찰 강화방안을 중심으로 개발된 일일안전지수 제도를 소개하고 그 효과성에 대하여 검토하였다. 그 결과 일일안전지수는 중대재해를 효과적으로 감소시키는 것으로 분석되었다. 일일안전지수제도는 다른 국가핵심기반에서도 적합하게 응용 적용하여 재해를 예방할 수 있다.

• Korean Association of Arts Management
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• no.50
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• pp.213-241
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• 2019

Recently, many interests in the economic contribution of performing arts for the city's tourist attractions have been increasing, and the policy projects supporting surtitle for foreign tourists are expanding. Therefore, the purpose of this study is to explore the acceptance process of subtitle systems using the TAM(Technical Acceptance Model) to understand the influential relations of factors affecting the viewing of the performance of subtitling service by foreign tourists. Data for empirical analysis were collected in a survey of foreign tourists who had experienced performance subtitles with smart pads in three languages. The results of this study are as follows. First, the higher the information system quality of the performance subtitles, the higher the perceived usefulness of the subtitles. Second, for Korean performances, the decreasing level of both the performance-based risk and the psychological risk has a positive influence on the viewing intent. But, the decreasing level of the financial risk has a negative influence on the viewing intent. Third, the decreasing level of performance risk has a positive influence on the perceived usefulness, while the decreasing level of psychological risk has a negative influence on the perceived usefulness. Finally, the psychological risk has the moderating effect of the viewing intention, which it has a negative influence on the perceived usefulness.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.105-105
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• 2023

최근 기후변화로 인해 매년 집중호우 및 태풍으로 인한 침수피해가 증가하고 있다. 현재 국내에서는 이러한 피해를 줄이기 위해 구조적 대책뿐만 아니라 치수사업의 의사결정을 지원할 수 있는 비구조적 대책들이 대두되고 있다. 비구조적 대책으로는 재해예방사업 등에서 투자우선순위를 결정할 수 있는 다차원법, 홍수취약성지수 등과 같은 정량적, 정성적 홍수위험도 평가가 대표적이다. 하지만 기존 시군구별 홍수위험도 평가는 빈도별 홍수위험지도의 침수면적을 반영하지 않았었다. 따라서 본 연구에서는 서울특별시를 대상으로 빈도별(50, 80, 100 및 200년) 설계홍수량에 따른 홍수위험지도를 작성하고 IBA(Indicator Based Assessment) 방법을 활용한 홍수위험도 평가를 실시하였다. 홍수위험지수는 4가지 항목(Hazard, Exposure, Vulnerability 및 Capacity)과 8개의 세부지표로 구성하였다. 분석결과, 송파구와 성동구는 100년 빈도, 용산구와 강남구는 80년 빈도와 100년 빈도에서 홍수위험지수의 순위 변동이 관측되었다. 순위 변동이 발생한 주요 원인으로는 홍수위험도 평가에 반영된 Exposure 및 Vulnerability 항목에 포함된 세부지표별 지수가 시군구 내 빈도별 침수면적이 변화함에 따라 증가 혹은 감소했기 때문이었다. 본 연구를 활용하면 빈도별 침수면적 변화에 따른 시군구별 홍수위험도를 파악할 수 있으며, 그에 따른 예방책 또한 마련할 수 있을 것이다. 그리고 공간분석을 통해 도출된 통계지도를 활용하여 홍수위험에 직접적으로 노출된 건물 및 인구 밀집지역을 파악하고, 해당 지역을 대상으로 치수사업을 전개할 수 있을 것으로 판단된다.

• Journal of Chest Surgery
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• v.37 no.3
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• pp.235-244
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• 2004

Anatomic correction of the transposition of the great arteries (TGA) or Taussig-Bing anomaly by means of the arterial switch operation is now accepted as the therapeutic method of choice. This retrospective study was conducted to evaluate the risk factors for operative deaths and the efficacy of technical modification of the coronary transfer. 85 arterial switch operations for TGA or Taussig-Bing anomaly which were performed by one surgeon from 1994 to July 2002 at Dong-A university hospital were included in this retrospective study Multivariate analysis of perioperative variables for operative mortality including technical modification of the coronary transfer was peformed. Overall postoperative hospital mortality was 20.0% (17/85). The mortality before 1998 was 31.0% (13/42), but reduced to 9.3% (4/43) from 1998. The mortality in the patients with arch anomaly was 61.5% (8/13), but 12.5% (9/72) in those without arch anomaly. In patients who underwent an open coronary reimplantation technique, the operative mortality was 28.1% (18/64), but 4.8% (1/21) in patients undergoing a technique of reimplantation coronary buttons after neoarotic reconstruction. Risk factors for operative death from multivariated analysis were cardiopulmonary bypass time ($\geq$ 250 minutes), aortic cross-clamping time ($\geq$ 150 minutes), aortic arch anomaly, preoperative event, and open coronary reimplantation technique. Operative mortality has been reduced with time. Aortic arch anomaly and preoperative events were important risk factors for postoperative mortality. However atypical coronary artery patterns did not work as risk factors. We think that the technical modification of coronary artery transfer played an important role in reducing the postoperative mortality of arterial switch operation.

• Journal of Korean Society of Transportation
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• v.21 no.5
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• pp.73-81
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• 2003

The Government presented improvement plans such as "Traffic Accident Frequent Point" and "Hazardous Roads" to reduce traffic accidents on the increase after 1980s. In case of the hazardous roads, they are expressed by grades which are marked by geometric elements such as width, radius, grade. sight distance. and other environmental factors. As each business for improving roads goes by only focusing on improvement of geometric elements, excessive expense can be invested too much nowadays causing economical waste. Therefore, as improvement plans approached by economic access are needed, this paper shows the cost-effective improvement of the business to keep safety related to traffic accident and economical waste. The hazardous roads which authorized by Gwang-ju National Road Preservation Office of Construction and Transportation Ministry in 1995 for business for improvement of roads, were investigated before 1999. First of all, estimating traffic accident models are presented by using existed data statistically. The models help to maximize traffic accident decrease through control of the presented factor. Secondly, optimum construction cost of improvement is presented to prevent overcapitalization. However, this paper is limited because it was difficult to sort the data with various areas and to approach various ways.

• Korean Journal of Biological Psychiatry
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• v.15 no.1
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• pp.23-28
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• 2008

Objectives : The treatment of alcohol dependence requires maintaining abstinence. However, some previous studies have suggested that the abstinence may increase the cardiovascular risk in patients with alcohol dependence. The aim of the present study was to examine the effect of alcohol abstinence on lipid profile in Korean male patients with alcohol dependence. Methods : Twenty-eight male patients with alcohol dependence were recruited from a psychiatric unit located at Gangneung Dongin Hospital. Lipid profiles of the patients were compared before and after a month of alcohol abstinence. Results : After abstinence of 1 month, high-density lipoprotein(HDL) cholesterol and triglyceride(TG) level was significantly decreased(p=0.000; p=0.0086, respectively). Low-density lipoprotein(LDL) cholesterol level showed a tendency to increase(p=0.066). Total cholesterol level also showed a tendency to decrease(p=0.074). Conclusions : These results show that acute abstinence of alcohol might paradoxically aggravate dyslipidemia in patients with alcohol dependence. Thus, this study shows that more concern associated with cardiovascular risk is needed during short-term abstinence period.

• Journal of the Korean earth science society
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• v.43 no.1
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• pp.30-40
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• 2022

Wildfires, which occur sporadically and irregularly worldwide, are distinct natural disturbances in combustible vegetation areas, important parts of the global carbon cycle, and natural disasters that cause severe public emergencies. While many previous studies have investigated the variability and changes in wildfires globally based on fire emissions, burned areas, and fire weather indices, studies on East Asia are still limited. Here, we explore the characteristics of variability and changes in wildfire danger over East Asia by analyzing the fire weather index for the 40 years-1981-2020. The first empirical orthogonal function (EOF) mode of fire weather index variability represents an increasing trend in wildfire danger over most parts of East Asia over the last 40 years, accounting for 29% of the total variance. The major contributor is an increase in the surface temperature in East Asia associated with global warming and multidecadal ocean variations. The effect of temperature was slightly offset by the increase in soil moisture. The second EOF mode exhibits considerable interannual variability associated with the El Nino-Southern Oscillation, accounting for 17% of the total variance. The increase (decrease) in precipitation in East Asia during El Nino (La Nina) increases (decreases) soil moisture, which in turn reduces (increases) wildfire danger. This dominant soil moisture effect was slightly offset by the temperature increase (decrease) during El Nino (La Nina). Improving the understanding of variability and changes in wildfire danger will have important implications for reducing social, economic, and ecological losses associated with wildfire occurrences.

• Journal of Aerospace System Engineering
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• v.16 no.3
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• pp.52-62
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• 2022

In the SORA methodology developed for the operational risk assessment of a specific category of operation of a UAS, the ground and the air risk levels are determined, and a SAIL indicating the level of assurance and integrity for the corresponding risk is assigned, and accordingly, the operational safety level for the proposed operation. Objectives should be demonstrated at an appropriate level of robustness. Because of the nature of the specific category of operation, people on the ground are the first risk subjects to be considered. The resulting ground risk class plays an important role in the allocation of SAIL. In this paper, the impact on SAIL and OSO according to the final risk level and the reduction of the level through the determination of the ground risk level and the application of mitigation measures among risk assessments for specific categories of UAV operation was investigated.

• Journal of Preventive Medicine and Public Health
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• v.30 no.3 s.58
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• pp.497-507
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• 1997

This study was conducted to evaluate the association of various lifestyle with blood pressure. The data were obtained from the individuals who got routine health examination in Department of Occupational Medicine, Yeungnam University Hospital from June to September, 1996. Among these people, we selected 130 cases of hypertensives (97 males, 33 females) and 150 normotensives(70 males, 80 females) and study was conducted. The authors collected the information of the risk factors related to hypertension such as age, family history of hypertension, fasting blood sugar, serum total cholesterol, alcohol consumption(g/week), smoking history, relative amount of salt intake (low, moderate, high), the frequency' of weekly meat consumption, BMI, daily coffee consumption(cups/day) and the frequency of regular exercise(frequency/week) through questionnaire and laboratory test. By simple analysis, BMI was significantly associated with hypertension in male(p<0.05), and the frequency of weekly meat consumption was significantly associated with hypertension in female(p<0.05). Using logistic regression model, elevated odds ratio was noted for fasting blood sugar, serum total cholesterol, family history of hypertension, alcohol consumption, salt intake and BMI, and reduced odds ratio was noted for coffee consumption and exercise in male but fasting blood sugar(odds ratio=1.022, 95% CI=1.000-1.044), family history in both of parents(odds ratio=3.301, 95% CI=1.864-4.738), salt intake(odds ratio=1.690, 95% CI=1.082-2.298) and BMI(odds ratio=1.204, 95% CI=1.065-1.343) were statistically significant(p<0.05). In female, elevated odds ratio was noted in serum total choles terol, family history of hypertension, BMI and meat consumption. Of all these variables, the family history of hypertension in either of parents(odds ratio=4.981, 95% CI=3.650-6.312), family history in both of parents(odds ratio=16.864, 95% CI=14.577-19.151), BMI(odds ratio=1.167, 95% CI=1.016-1.318) and meat consumption(odds ratio=2.045, 95% CI=1.133-2.963) showed statistically significant association with hypertension in female(p<0.05).

• Journal of Convergence for Information Technology
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• v.11 no.1
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• pp.80-90
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• 2021

This study examines whether, when, and how sellers with low-quality products can instantly enhance profitability by fully disclosing quality information. Our analytic model has found that a low-quality seller can increase demand even in the short run by voluntarily sharing the information about its quality, if he can sufficiently reduce perceived risk of buyers. Moreover, a low-quality seller's information disclosure may increase both the market's and the competitor's demand, depending on the level of perceived risk. The finding of this study is expected to provide meaningful implications to managers and policy makers on solving market dilemmas under information asymmetry.