• Proceedings of the Korean Society of Computer Information Conference
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• 2024.01a
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• pp.163-166
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• 2024

최근 통계자료에 따르면, 매년 화재 발생 건수와 이로 인한 피해가 증가하는 것으로 나타나고 있다. 이에 따라 본 연구에서는 여러 공공 데이터를 분석하여 각 지역별 특성이나 환경적 요인에 따른 화재의 원인을 분석해고보가 한다. 분석을 위하여 화재 발생 건수, 시도별 공장 수와 인구수, 계절별 화재 발생수, 장소별 화재 요인에 대한 각각의 공공 데이터를 활용하였다. 분석 결과 지역별 공장 수와 비례하지않은 화재 발생 건수나, 대중적으로 생각하는 겨울철 가장 많은 화재의 발생보다 봄철에 더 많은 화재가 발생되었던 통계 결과와 같이 각 지역적인 특성이나 발화요인에 따라 화재 발생률에 미치는 영향은 다르게 나타난다는 것을 알 수 있었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.214-215
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• 2018

낚시관리 및 육성법에서의 영업구역은 선적항이 속한 시도지사의 관할 수역이다. 시도지사의 관할 수역이라는 모호한 영업구역으로 인하여 각 지자체의 영업구역은 다르다. 본 연구에서는 해상 기상자료를 기반 해역별(4곳)/거리별(앞바다, 먼바다) 낚시어선 내항성능 검토를 위한 수치해석을 진행하였다.

• Journal of Korean Society of Environmental Engineers
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• v.39 no.4
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• pp.220-228
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• 2017

Since the fine particulate matters occurred from mainly combustion in industry and road transport effect to human respiratory health, the interest and importance are getting increased. In 2013, the World Health Organization (WHO) concluded that outdoor air pollution is carcinogenic to humans, with the particulate matter component ($PM_{10}$ and $PM_{2.5}$) of air pollution most closely associated with increased cancer incidence, especially cancer of the lung. Therefore, many researches have been studied in the quantification and data development of fine particulate matters. Currently, the Ministry of Environment and cities/regions are developing the fine particulate matter data and air emission information. Particularly just $PM_{10}$ and $PM_{2.5}$ data is used in the fine particulate matters warning and alert. The data of NOx, SOx, $NH_3$, which have the particulate matter formation potential are not well considered. Also, the researches related with particulate matter formation potential and respiratory effects by industrial sectors and cities/regions are not conducted well. Therefore, the purpose of this study is to evaluate and calculate particulate matter formation potential and respiratory effects in 11 industrial sectors and cities using NOx, SOx, $PM_{10}$, $NH_3$ data (developed by Ministry of Environment and National Institute of Environmental Research) in 2001 and 2013. The results of this study will be provided the particulate matter formation potential and respiratory effects and will be used for future the fine particulate matter researches.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.380-381
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• 2023

최근 경제침체로 인해 지속되는 연체율 상승의 원인을 지역별 및 시차별로 분석하였다. 독립변수를 가계대출변수, 부동산지수변수, 경제지표변수로 나누었고 통계적 모델링을 통해 총 19 가지 변수로 연체율을 예측하였다. 각 지역마다 상이한 결과가 도출되었는데 이를 바탕으로 지역별 연체율 감소 정책을 제안한다.

• Communications for Statistical Applications and Methods
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• v.4 no.1
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• pp.65-74
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• 1997

1996년 15대 국회의원 선거의 소속별 예측의석수와 실제의석수에 대한 정방형 분할표를 구하여 적절한 대수선형모형을 적합시키고 모형의 해석을 시도하였다.

• Aerospace Industry
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• v.46
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• pp.54-57
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• 1996

날이 샐 무렵 멀리있는 작은 별들이 자취를 감출 때 서쪽 하늘에 밝게 빛나는 큰 별 속칭 샛별이라는 그 별이 바로 화성이다. 사람들의 눈에 띄기 어려운 시간에 크게 나타나는 별이기 때문에 달처럼 친숙한 많은 이야기는 없지만 인공위성을 띄우고 달나라에 사람을 보내고 달 표면에 흙을 가져온 지구인의 과학은 드디어 화성 탐사에 도전하게 되었다.

• The Science & Technology
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• v.30 no.10 s.341
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• pp.32-34
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• 1997

"기상 예보ㆍ통보때 예보관의 이름을 함께하는 '예보관 실명제'를 도입해 앞으로 일기예보의 적중률을 높이는데 최선을 다하겠습니다" 신임 기상청장 문승의 박사는 다짐한다. 올 여름 우리나라의 이상기상은 엘니뇨현상의 간접 영향이라고 밝힌 문청장은 앞으로 가뭄지수, 부패지수, 시도별 냉난방지수와 자외선지수 등 예보기능을 확대해 나갈 계획이라고 말했다.

• Journal of the Korea Society of Computer and Information
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• v.28 no.7
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• pp.189-198
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• 2023

The phenomenon of climate change is deteriorating which increased heatwaves, typhoons and heavy snowfalls in recent years. Followed by the 25^th United nations framework convention on climate change(COP25), the world countries have achieved a consensus on achieving carbon neutrality. City plays a crucial role in achieving carbon mitigation as well as economic development. Considering economic and environmental factors, we selected 63 cities in South Korea to analyze carbon emission situation by Elbow method and K-means clustering algorithm. The results reflected that cities in South Korea can be categorized into 6 clusters, which are technology-intensive cities, light-manufacturing intensive cities, central-innovation intensive cities, heavy-manufacturing intensive cities, service-intensive cities, rural and household-intensive cities. Specific suggestions are provided to improve city-level carbon mitigation development.

• Korean Journal of Biological Psychiatry
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• v.6 no.2
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• pp.227-234
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• 1999

An association of low total cholesterol in blood with psychiatric diseases and suicidal behavior has been suggested. As part of an attempt to further explore this relationship, we examine first, whether serum cholesterol levels in psychiatric patients with suicidal attempt would be lower than in non-suicidal psychiatric inpatients or normal controls, second, whether such significant difference of cholesterol levels would be present when the diagnostic groups are analyzed separately, third, whether low cholesterol level would be associated with a history of serious suicidal attempts, and finally, whether low cholesterol level in suicide attempters is a state or a trait marker. We determined the serum cholesterol levels in 231 patients admitted to an emergency room following an suicidal attempt, in the same numbers of age-, sex- and diagnosis- matched non-suicidal psychiatric controls, and in the same numbers of age-, sex matched normal controls. The seriousness of an attempt was divided into 5 grades according to the degree of the resulting medical injury. Total cholesterol levels in suicide attempters were significantly lower compared with both psychiatric and normal controls, when sex, age, and nutritional status (i.e., body mass index) were controlled for. This significant relationship was observed in major depressive disorders and personality disorders, but not in schizophrenia and bipolar type I disorders. The severity of suicide by a lowering of blood cholesterol was related to the magnitude of the cholesterol reduction. After treatment of their psychiatric ailments, the cholesterol levels in suicide attempters were significantly increased. This result suggests that low cholesterol level in psychiatric patients might be a potential biological marker of suicide risk. It is hypothesized that low cholesterol levels is associated with the suicide by modifying the serotonin metabolism, the production of interleukin-2 and melatonin metabolism in psychiatric patients.

• Journal of the Korean Geographical Society
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• v.47 no.1
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• pp.98-120
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• 2012

The main objective of this study is to conduct subnational population projections of Korea based on a multiregional cohort-component method. This objective is accomplished by: (i) establishing a viable framework to implement the multiregional cohort-component method with reference to the Markov chain model and Rogers' multiregional population projection model; (ii) applying the established framework to subnational population projections of Korea, 2005~2030. The main results are twofold. First, the proposed method turns out to be highly valid in a methodological sense, which is seen from a high level of coincidence between the estimated and the observed. Second, the projection results turn out to be highly useful in the sense that interregional migration flow matrices are resulted for projection periods. The projected migration flows are expected to provide invaluable information for an understanding of future population change and for a formulation of policy alternatives. This study is strongly inspired by the multiregional perspective emphasizing the evolution of multiple regional populations interconnected by interregional migration flows rather than the overall national change.