• 보건행정학회지
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• 제28권4호
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• pp.402-410
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• 2018

Background: Monitoring appropriate medication categories can provide early warning of certain disease outbreaks. This study aimed to present a methodology for selecting and monitoring medications relevant to the surveillance of acute respiratory tract infections, such as influenza. Methods: To estimate correlations between acute febrile respiratory tract infection and some medication categories, the cross-correlation coefficient (CCC) was used and established. Two databases were used: real-time prescription trend of antivirals, anti-inflammatory drugs, antibiotics using Drug Utilization Review Program between 2012 and 2015 and physicians' number of encounters with acute febrile respiratory tract infections such as influenza outbreaks using the national level health insurance claims data. The seasonality was also evaluated using the CCC. Results: After selecting six candidate diseases that require extensive monitoring, influenza with highly specific medical treatment according to the health insurance claims data and its medications were chosen as final candidates based on a data-driven approach. Antiviral medications and influenza were significantly correlated. Conclusion: An annual correlation was observed between influenza and antiviral medications, anti-inflammatory drugs. Suitable models should be established for syndromic surveillance of influenza.

• 한국산학기술학회논문지
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• 제20권5호
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• pp.492-501
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• 2019

사이버 공간에서 안전하게 시스템을 사용하기 위해서는 상황에 적합한 보안 솔루션을 사용해야 한다. 사이버 보안을 강화하기 위해 과거부터 현재까지 보안의 흐름을 정확히 파악하고 미래의 다양한 위협에 대비해야 한다. 본 연구에서는 텍스트마이닝을 이용하여 신뢰도가 높은 네이버 뉴스의 보안/해킹 뉴스의 정보보안 단어들을 수집 후 분석하였다. 첫 번째는 지난 7년의 연도별 보안 뉴스 기사수를 확인하고 추이를 분석하였다. 두 번째는 보안/해킹 관련 단어 순위를 확인 후 매년 주요 관심사를 확인하였다. 세 번째는 보안 솔루션별 단어를 분석하여 어느 보안 그룹의 관심도가 높은지 확인하였다. 네 번째는 보안 뉴스의 제목과 본문을 분리 후 보안 관련 단어를 추출 후 분석하였다. 다섯 번째는 세부 보안 솔루션별 추이 및 동향을 확인하였다. 마지막으로 연도별 매출액과 보안 단어 빈도수를 분석하였다. 이러한 빅데이터 뉴스 분석을 통해 보안 솔루션에 대한 전반적인 인식 조사를 수행하고 많은 비정형 데이터를 분석하여 현재 시장 추세를 분석하고 미래를 예측할 수 있는 정보를 제공하는 데 기여하고자 한다.

• Journal of Dental Anesthesia and Pain Medicine
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• 제21권2호
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• pp.99-111
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• 2021

Background: Attention deficit hyperactivity disorder (ADHD) is characterized by a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development. It has a worldwide pooled prevalence of 5.29%. The characteristics of ADHD can increase the probability of dental treatment, while special behavior management can be required to allow proper treatment. In South Korea, the use of sedation in dental treatment has rapidly increased in recent decades. The present study aimed to investigate the trend and effects of sedation in patients with ADHD undergoing dental treatment in South Korea. Methods: The study used customized health information data provided by the Korean National Health Insurance Service. Among patients with the record of sedative use during the period from January 2007 to September 2019, those with International Classification of Diseases-10 codes for ADHD (F90, F91) were selected; the data of their overall insurance claims for dental treatment were then analyzed. The patients' age, gender, sedative use, and dental treatment were analyzed per year. The annual number of general anesthesia or sedation cases was also analyzed, and changes in the method of behavior management with increasing age were examined. Results: The study involved 7,654 patients with ADHD (6,270 males; 1,384 females). The total number of dental treatments was 137,778, while the number of sedation cases was 16,109, among which 13,052 involved male patients and 3,057 female patients. The number of general anesthesia cases was 631, among which 538 involved male patients and 93 female patients. The most frequently used sedation method in the dental treatment of patients with ADHD was N2O inhalation. The percentage of sedation cases was highest in patients aged 4 years, and it decreased with increasing age. Conclusion: In South Korea, both sedation and dental treatments were slightly more common in patients with ADHD than in the general population. With increasing age, the frequency of dental treatments and the percentage of sedation cases decreased.

• 한국재난정보학회 논문집
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• 제18권2호
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• pp.351-363
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• 2022

연구목적:본 연구는 우리나라 재난안전분야의 제조업 고용 클러스터를 찾는 것을 목적으로 한다. 연구 방법: LISA(Local Indicator of Spatial Association)분석기법이 2019년 한국표준산업분류와 재난안전산업 특수 분류기준에 의해 구축된 229개 지자체의 고용 데이터에 적용되었다. LISA기법은 해당 산업들의 공간 클러스터와 고용의 공간적 종속성을 파악하였다. 연구결과: 세 가지 분석결과가 도출되었다. 첫째, 우리나라 재난안전산업의 고용은 전체 제조업의 약 6%를 점유하며 매년 증가하는 추세다. 둘째, 재난안전 산업의 고용 클러스터는 수도권 서부지역에 입지하고 있다. 셋째, 산업재해 방지 산업안전용품 제조업은 중화학 공업과 산업단지가 있는 부산, 울산, 경남창원, 김해 지역을 중심으로 클러스터를 형성한다. 결론: 해당 지역들을 재난안전산업의 제조업 클러스터로 육성하는 투자와 유성정책이 필요하다. 본 연구결과는 우리나라 재난안전산업에 형성되어 있는 제조업 클러스터들의 산업발전과 고용육성 정책을 개선하는데 사용될 수 있다.

• 한국방재안전학회논문집
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• 제14권4호
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• pp.1-7
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• 2021

주5일제 실시, 인구 고령화 등으로 근로 환경이 과거에 비해 크게 바뀌었지만 빈도율, 강도율, Safe T-score와 같은 산업재해지수에는 반영되지 않고 있는 실정이다. 본 연구에서는 평균수명 증가, 근로 가능연령 상향, 근로시간 단축, 재해에 의한 사망자 평균 연령 변화 등의 시계열 동향을 파악하기 위해 통계자료를 활용하였다. 통계자료의 시계열 추이 분석 결과 인구 고령화로 인해 기대수명이 83.3세로 늘어났고, 법정 근로연령 또한 65세로 증가하였다. 그리고 2001년부터 주5일제 근로시간제가 도입되면서 연간 평균 근로시간은 2008.1시간으로 줄어들었다. 따라서 현재의 산업재해지표에서 사용되고 있는 기준과는 상당한 차이가 있었으며, 이러한 차이는 산업재해지표를 활용해 재해의 발생빈도와 산업재해로 인한 근로손실일수 등을 계산하고 그 추이를 파악하는데 큰 영향을 줄 것이라 판단된다.

• 대한한방소아과학회지
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• 제37권1호
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• pp.45-57
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• 2023

Objectives This study aimed to provide a basis for the research on the trend and safety of Korean herbal medicines among children and adolescents. Methods Patients aged <19 years who received outpatient treatment at the Korean pediatrics department of Kyung Hee University Hospital from January 1, 2017 to October 31, 2022 were included. The current state of annual visits and herbal medicine prescriptions was analyzed. A retrospective chart review was conducted by examining the medical records of subjects who received herbal medicines, including deer antler. Adverse drug reactions in patients who received herbal medicine were also investigated. Results A total of 57,457 people visited the Korean pediatrics department, and 51,768 people (90.1%) were prescribed herbal medicine. Among these, 21,826 patients (42.2%) were prescribed with deer antler. A total of 117 adverse drug reactions were reported among the patients who received herbal medicines. Conclusions This study aimed to determine the trends and safety of herbal medicine treatment, particularly deer antlers, in children and adolescents. Well-designed, long-term, multi-institutional follow-up studies are required to expand the field of Korean pediatrics.

• Journal of Forest and Environmental Science
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• 제39권3호
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• pp.167-179
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• 2023

The extent of change in the Land use/Land cover (LULC) of Okomu National Park (ONP) and fringe communities was evaluated. High resolution Landsat imagery was used to identify the major vegetation cover/land use systems and changes around the national park and fringe communities while field visits/ground truthing, involving the collection of coordinates of the locations was carried out to ascertain the various land cover/land use types identified on the images, and the extent of change over three-time series (2000, 2010 and 2020). The change detection was analyzed using area calculation, change detection by nature and normalized difference vegetation index (NDVI). The result of the classification and analysis of the LULC Change of ONP and fringe communities revealed an alarming rate of encroachment into the protected area. All the classification features analyzed had notable changes from 2000-2020. The forest, which was the dominant LULC feature in 2000, covering about 66.19% of the area reduced drastically to 36.12% in 2020. Agricultural land increased from 6.14% in 2000 to 34.06% in 2020 while vegetation (degraded land) increased from 27.18% in 2000 to 38.89% in 2020. The magnitude of the change in ONP and surroundings showed the forest lost -247.136 km² (50.01%) to other land cover classes with annual rate change of 10%, implying that 10% of forest land was lost annually in the area for 20 years. The NDVI classification values of 2020 indicate that the increase in medium (399.62 km² ) and secondary high (210.17 km² ) vegetation classes which drastically reduced the size of the high (38.07 km² ) vegetation class. Consequent disappearance of the high forests of Okomu is inevitable if this trend of exploitation is not checked. It is pertinent to explore other forest management strategies involving community participation.

• Journal of Ecology and Environment
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• 제46권1호
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• pp.85-98
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• 2022

Background: Korean white pine (Pinus koraiensis) is a major commercial species, and the importance of the oak trees (Quercus spp.) is increasing due to various factors such as environmental and ecological values. However, more information is required to clearly understand the growth characteristics of these species especially regarding thinning intensity. This study was performed to provide the basic information to develop the silvicultural guideline and field manual by analyzing tree and stand characteristics in line with thinning intensity in the Korean white pine plantation and oak-dominated natural deciduous forest. Results: Diameter at breast height (DBH) and volume changes by the thinning intensity in the Korean white pine plantation were significantly different from those in the oak-dominated deciduous natural forest. In particular, DBH distribution in the pine stand appeared that there were more large diameter trees as the thinning intensity was higher. DBH periodic annual increment (PAI) of the pine stand was higher as the thinning intensity was stronger and the growth period was shorter. This trend was similarly shown in the natural deciduous forest, but the amount of PAI was smaller than in pine stand. The volume PAI after thinning was not decreased over time. In each stand type, the PAI tended to be lower as stand density was higher. The volume PAI in the pine stand was significantly higher than that in the oak-dominated natural deciduous forest. Dead trees occurred the most in the unthinned plots of each stand type, and those were higher in the natural deciduous forest. Ingrowth trees were observed only in the natural deciduous forest, and its distribution was the lowest in unthinned plots; Korean white pine as ingrowth occurred the most frequently among many tree species. Conclusions: Different effects of thinning treatment on DBH and volume PAI, mortality, and ingrowth were observed for each stand. With respect to forest growth, Korean white pine plantation was superior to the oak-dominated natural deciduous forest. The results of this study offer fundamental information for the development of silvicultural guidelines for Korean white pine plantations and oak-dominated natural deciduous forests in Korea.

• Journal of Korean Neurosurgical Society
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• 제66권4호
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• pp.456-464
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• 2023

Objective : This study aims to investigate the incidence of vestibular schwannoma (VS) and demographic characteristics in Korea using population-based National Health Insurance Service data. Methods : This study analyzed Korean National Health Insurance Service data from 2005 to 2020, based on the International Classification of Diseases, 10th version, Clinical Modification codes D333 and D431. Only those patients who had undergone magnetic resonance imaging and audiologic tests were considered definitive cases. Demographic variables included age, sex, treatment modality, hypertension, diabetics, dyslipidemia, smoking history, alcohol history, and income status. Results : The total number of VS patients was 5751. The average incidence rate was 0.71 per 100000 from 2005 to 2020, and the annual incidence rate increased from 0.33 in 2005 to 1.32 in 2019 but decreased to 0.80 in 2020. Incidence was highest in those aged 60-69 years (1.791) and lowest in those younger than 20 years (0.041). Incidence was higher in females, and the number of patients who received radiosurgery (46.64%) was largest compared to the wait and scan group (37.96%), microsurgery group (12.85%), or the group who received both (2.56%). Diabetes, dyslipidemia, and alcohol consumption increased the risk of VS, while cigarette smoking reduced the risk of VS. Conclusion : The incidence of VS exhibited an increasing trend from 2005 to 2019. Radiosurgery (46.64%) was the most common treatment modality. Diabetes, dyslipidemia, and alcohol consumption increased the risk of VS, while cigarette smoking reduced the risk of VS.

• 산업진흥연구
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• 제8권3호
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• pp.9-17
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• 2023

본 연구의 목적은 주요 여객수단인 철도, 지하철, 국내해운, 국내항공, 국제해운, 국제항공의 동향과 변동률을 분석하는데 있다. 사용된 자료는 통계청 국가통계포털 "국내통계, 주제별통계, 교통.물류"에서 자료를 선택하였다. 분석 기간은 1999년부터 2020년까지 총 22년간이며 전년대비 연간 변동률을 산출하였다. 기술통계량에서 국제해운과 국제항공은 상대적으로 변동성이 크게 나타난 반면 철도와 지하철은 작게 나타났다. 상승률 분석에서 국제항공과 국제해운은 2019년도 539%와 368%에서 코로나로 인해 2020년에 85%와 20%로 크게 하락하였다. 국제항공과 국제해운은 2020년에 크게 하락하였으나 코로나의 충격이 사라지면서 다시 상승할 것으로 기대하면서 이에 대비하는 전략이 필요할 것으로 보인다. 국제 무역이 다시 증가하고 해외여행이 다시 활력을 찾아가면서 기존의 상승세가 계속 이어질 것으로 예상해 본다.