• 한국농림기상학회지
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• 제20권4호
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• pp.337-347
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• 2018

농업활동의 위험은 대부분은 기상에 의해 발생한다. 효율적인 농작업을 위해선 기상정보를 활용해야 한다. 현대 농업은 첨단 기술인 ICT와 융합을 통해 고부가가치를 창출하는 방향으로 발전하고 있다. 본 연구에서는 고랭지배추의 효율적인 재배를 위한 USN 관측장비를 통한 기상관측장비의 품질관리 알고리즘을 다룬다. 기상관측에서 정확한 관측이 중요하다. 이를 위해서 기상청에서는 기상관측 장비별로 품질관리 알고리즘을 개발하여 기상정보의 정확성 검증을 통해 정상자료 여부를 판정한 후 이를 활용한다. 연구자료는 2015년부터 2017년까지 3년간 대표적인 고랭지배추 재배지인 안반덕, 귀네미에 설치된 5개 USN 자료이다. 품질관리 알고리즘은 지속성검사, 기후범위검사, 시간변동성검사, 공간분포검사로 구성되어 있다. 마지막으로 본 연구에서 제안하는 품질관리 알고리즘은 기상자료의 공간적 특성을 고려한 잠재적 이상관측 여부도 확인할 수 있다. 또한 품질관리를 거친 자료를 토대로 고랭지배추와 기상관측자료의 상관성을 분석함으로써 효율적 농산업 관리에 도움이 될 것으로 보여진다.

• 공연문화연구
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• 제36호
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• pp.585-602
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• 2018

이 글은 사진실 선생의 학문 세계에 대해 살핀 것이다. 사진실 선생의 연구 성과에 대한 섬세하고 엄밀한 평가라기보다는, 그와의 직 간접적인 만남 속에서 필자가 생각했던 것들을 정리했다. '참여 관찰기'라는 논제가 붙은 연유가 여기에 있다. 필자는 이 글이 관례적이고 형식적인 추도사가 되는 것을 경계했다. 사 선생 역시 형식이고 관례적인 글을 원하지는 않을 것이라 생각했기 때문이다. 필자의 참여 관찰기는 사 선생의 문헌 중심 연구에 대한 생각을 정리하는 것으로 시작했다. '알려진 성과와 재평가될 것들'이라는 목차 제목이 필자가 말하려는 것을 함축하고 있다. 전통연행 관련 문헌 연구에서 사 선생이 기여한 바와 기존 평가의 타당성에 대한 필자의 생각이 여기서 정리되었다. 이미 널리 알려진 기여나 성과에 대해서는 새삼스럽게 재론하지 않았다. 여기서 필자가 특별하게 살핀 것은 '재평가될 것들'이었다. 그 중요성과 의의에도 불구하고 제대로 평가받지 못한 것, 어쩌면 이제는 당연한 것으로 인식되어 쉽게 지나쳐 버리는 성취를 새삼 강조했다. 이어지는 논의에서는 사 선생의 전혀 다른 학문적 면모를 살폈다. 필자는 이 대목의 제목을 '편견에 맞선 의외의 성과'라 붙였다. 여기서 다루어진 대상은 사 선생의 현장 중심적 연구들이었다. 흔히 사진실 선생을 문헌을 중심으로 연구하는 연극사학자 혹은 전통공연예술학자라 평가한다. 필자는 이것이 편견이라 생각한다. 워낙 그러한 생각이 일반적이어서, 문헌이 아닌 현장을 바탕으로 한 연구 성과를 간과하기가 쉽다. 목차 제목에 '편견'과 '의외'라는 표현을 한 이유이다. 여기서 필자는 사 선생이 현장 중심의 연구도 했다는 식의 논의에 그치지 않았다. 현장 연구에서 그가 이루어낸 성취를 적극적으로 강조하고 평가했다.

• 한국지구과학회지
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• 제40권3호
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• pp.300-312
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• 2019

본 연구의 목적은 고등학교 지구과학 교육에서 쉽게 다룰 수 있는 소형 망원경과 DSLR 카메라를 활용하여 산 개성단을 관측하고, 이를 통해 수집한 데이터를 활용하여 천문학자들과 같은 연구 방법으로 산개성단까지의 거리를 탐구할 수 있는 천체 관측 교육 프로그램을 개발하는 것이다. 2015개정 과학과 교육과정을 분석하여 고등학교 지구과학 교과 교육에 적합한 과학 동아리 활동 수업 자료와 교사용-학생용 학습 콘텐츠를 개발했다. 지구과학 교육과 천문학 분야의 전문가(교사) 6명이 패널로 참가하였고, 패널들 간의 상호간 신뢰도를 구축한 후, 프로그램의 타당도를 검증했다. 총 10차시 수업자료로 개발된 프로그램은 내용타당도(CVI. .89)와 현장 적합성 정도(리커트 5점 척도, 4.17) 검사에서 매우 만족스러운 검증 결과를 받았다. 프로그램에 대한 패널들의 의견 반영과 델파이 분석으로 개발 프로그램을 지속적으로 수정-개선하여 완성하였다. 개발된 프로그램을 고등학교 천체 동아리 학생들(N=9)을 대상으로 시범적 예비수업에 적용한 결과, 학생들의 수업 만족도가 4.48로 매우 높았다. 본 연구의 천체 관측 교육 프로그램을 천체 탐구의 융합교육 활동으로 활용한다면 학생들의 우주와 천체에 대한 관심과 호기심, 탐구 능력 증진에 기여할 수 있을 것이다.

• 대기
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• 제29권1호
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• pp.61-74
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• 2019

To investigate the observational environment, sky line and skyview factor (SVF) are calculated using a digital elevation model (DEM; 10 m spatial resolution) and 3 dimensional (3D) sky image at radiation site, Gangneung-Wonju National University (GWNU). Solar radiation is calculated using GWNU solar radiation model with and without the sky line and the SVF retrieved from the 3D sky image and DEM. When compared with the maximum sky line elevation from Skyview, the result from 3D camera is higher by $3^{\circ}$ and that from DEM is lower by $7^{\circ}$. The SVF calculated from 3D camera, DEM and Skyview is 0.991, 0.998, and 0.993, respectively. When the solar path is analyzed using astronomical solar map with time, the sky line by 3D camera shield the direct solar radiation up to $14^{\circ}$ with solar altitude at winter solstice. The solar radiation is calculated with minutely, and monthly and annual accumulated using the GWNU model. During the summer and winter solstice, the GWNU radiation site is shielded from direct solar radiation by the west mountain 40 and 60 minutes before sunset, respectively. The monthly difference between plane and real surface is up to $29.18M\;m^{-2}$ with 3D camera in November, while that with DEM is $4.87M\;m^{-2}$ in January. The difference in the annual accumulated solar radiation is $208.50M\;m^{-2}$ (2.65%) and $47.96M\;m^{-2}$ (0.63%) with direct solar radiation and $30.93M\;m^{-2}$ (0.58%) and $3.84M\;m^{-2}$ (0.07%) with global solar radiation, respectively.

• 대한임상독성학회지
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• 제16권2호
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• pp.141-148
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• 2018

Purpose: The Korean government approved selected nonprescription drugs (Over-The-Counter drug; OTC drug) to be distributed in convenience stores from 15. Nov. 2012. This study examined the changes in the incidence and the clinical outcome of acute pharmaceutical drug poisoning after the deregulation of OTC drug sales. Methods: This study analyzed the data of Emergency Department based Injury In-depth Injury Surveillance (EDIIS), Korea Centers for Disease Control and Prevention, from 2011 to 2014. The following items were examined: age, gender, intention, alcohol association, pharmaceutical drugs resulting acute poisoning, the clinical outcomes in emergency department, and the admission rate of intensive care unit (ICU). This is a retrospective cross section observational study. Results: A total of 10,162 patients were subject to pharmaceutical drug poisoning. Acute poisoning by acetaminophen and other drugs were 1,015 (10.0%) and 9,147 (90.0%) patients, respectively. After the deregulation of OTC drug sales, acute poisoning by other drugs increased from 4,385 to 4,762 patients but acute poisoning by acetaminophen decreased from 538 to 477 patients (p<0.05). The rate of admission of acetaminophen poisoning increased from 36.1% (194/538) to 46.8% (223/477). The admission rate to the ICU by acetaminophen poisoning increased from 4.6% (25/538) to 11.3% (54/477) after the deregulation of OTC drug sales (p<0.05). Conclusion: Since the deregulation of OTC drugs sales, pharmaceutical drug poisoning has increased but acetaminophen poisoning has decreased. The rate of hospitalization and ICU admission by pharmaceutical drug poisoning with or without acetaminophen has also increased.

• Tuberculosis and Respiratory Diseases
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• 제82권1호
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• pp.27-34
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• 2019

Background: Understanding the burden of disease is important to establish cost-effective treatment strategies and to allocate healthcare resources appropriately. However, little reliable information is available regarding the overall economic burden imposed by chronic obstructive pulmonary disease (COPD) in Korea. Methods: This study is a multicenter observational research on the COPD burden in Korea. Total COPD costs were comprised of three categories: direct medical, direct non-medical, and indirect costs. For direct medical costs, institutional investigation was performed at 13 medical facilities mainly based on the claims data. For direct non-medical and indirect costs, site-based surveys were administered to the COPD patients during routine visits. Total costs were estimated using the COPD population defined in the recent report. Results: The estimated total costs were approximately 1,245 million US dollar (1,408 billion Korean won). Direct medical costs comprised approximately 20% of the total estimated costs. Of these, formal medical costs held more than 80%. As direct non-medical costs, nursing costs made up the largest percentage (39%) of the total estimated costs. Costs for COPD-related loss of productivity formed four fifths of indirect costs, and accounted for up to 33% of the total costs. Conclusion: This study shows for the first time the direct and indirect costs of COPD in Korea. The total costs were enormous, and the costs of nursing and lost productivity comprised approximately 70% of total costs. The results provide insight for an effective allocation of healthcare resources and to inform establishment of strategies to reduce national burden of COPD.

• 대한응급의학회지
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• 제29권5호
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• pp.430-436
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• 2018

Objective: The purpose of this study was to evaluate whether or not the d-dimer level indicating hyperfibrinolysis could be a predictor of early poor outcome (massive transfusion, death within 24 hours) associated with trauma-induced coagulopathy in blunt trauma without significant brain injury. Methods: This study was a retrospective observational study using 516 blunt trauma patients without significant brain injury. The poor outcome group, including patients receiving massive transfusion and those who died within 24 hours, consisted of 33 patients (6.4%). The variables were compared between the poor outcome group and good outcome group, and logistic regression analysis was performed using statistically significant variables. Receiver operating characteristic (ROC) curve analysis was performed to evaluate the poor outcome prediction ability of the initial d-dimer level. Results: The poor outcome group showed more serious anatomical, physiological, and laboratory data than the good outcome group. In the ROC curve analysis for evaluation of the poor outcome prediction of the d-dimer level, the area under the curve value was 0.87 (95% confidence interval [CI], 0.84-0.90) while the cut-off value was 27.35 mg/L. In the logistic regression analysis, the high d-dimer level was shown to be an independent predictor of poor outcome (adjusted odds ratio, 14.87; 95% CI, 2.96-74.67). Conclusion: The high d-dimer level (>27.35 mg/L) can be used as a predictor for the poor outcome of patients with blunt trauma without significant brain injury.

• 대한응급의학회지
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• 제29권5호
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• pp.493-499
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• 2018

Objective: This study aimed to identify the effects of serum potassium and lactate on neurologic outcomes in out-of-hospital post-cardiac arrest adult patients. Methods: This study was a single center, retrospective observational study. We recruited out-of-hospital post-cardiac arrest adult patients admitted to an intensive care unit from 2011 to 2017. Primary outcome was good neurologic outcome at discharge. To evaluate the prognostic impact of serum potassium and lactate, univariate and multivariate logistic regression analyses were performed. Results: A total of 57 patients were included in this study. The number of patients with good neurologic outcome was 19 (33.3%). In the univariate analysis, good neurologic outcome patients showed a higher smoking rate, shorter pre-hospital transportation time, higher rate of percutaneous coronary intervention, and lower severity score (all P<0.05). The good neurologic outcome patients also presented higher pH, lower partial pressure of carbon dioxide, and lower potassium regarding laboratory findings on the first hospital day (all P<0.05). In the multivariate analysis, the independent factors favoring good neurologic outcome were pre-hospital transportation time (adjusted odds ratio [aOR], 0.82; 95% confidence interval [CI], 0.69-0.97; P=0.019) and lower partial pressure of carbon dioxide on the first hospital day (aOR, 0.95; 95% CI, 0.91-0.99; P=0.034). Conclusion: Serum potassium and lactate were not significantly associated with good neurologic outcome in out-of-hospital post-cardiac arrest adult patients. The prognostic factors for good neurologic outcome were pre-hospital transportation time and initial partial pressure of carbon dioxide.

• Endocrinology and Metabolism
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• 제33권4호
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• pp.459-465
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• 2018

Background: Differentiated thyroid carcinoma (DTC) shows a very good prognosis, but older patients have a higher recurrence rate and those show poor prognosis than younger patients. The aim of this study was to determine the clinical outcomes of thyroid cancer patients who experienced recurrence in old age according to the treatment strategy used. Methods: This retrospective observational cohort study was conducted at Asan Medical Center, Seoul, Korea. Among DTC patients with no evidence of disease after initial treatment, we enrolled 86 patients who experienced recurrence at an age >65 years from 1994 to 2012. Sixty-nine patients had local recurrence and 17 patients showed distant metastasis. Results: The mean age of patients at recurrence was 72 years. Patients were followed up for a median of 4.1 years after recurrence. Sixty-three of the 69 patients with local recurrence received additional treatment, while the other six received conservative care. The cancer-specific mortality rate was 15.5% in the local recurrence group. Airway problems were the main cause of death in patients who did not receive further treatment for local recurrence. Among the 17 patients with distant metastasis, 10 underwent specific treatment for metastasis and seven received only supportive management. Seven of those 17 patients died, and the cancer-specific mortality rate was 35% in the distant metastasis group. Conclusion: The overall cancer-specific mortality rate was 20% in DTC patients in whom recurrence was first detected at an age >65 years. Mortality due to uncontrolled local disease occurred frequently in patients who did not receive definitive management for recurrence.

• 대한응급의학회지
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• 제29권6호
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• pp.624-635
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• 2018

Objective: This study examined whether emergency department (ED) crowding influences the timing of the initial assessment and treatment in severe trauma patients, as well as their mortality rates. Methods: This retrospective, observational study was conducted between January 2015 and October 2016, and included adult severe trauma patients who presented to the ED. The emergency department occupancy rate (EDOR) was used to measure ED crowding. The patients were divided into four groups using the EDOR quartile. The timeliness of the initial assessment and treatment in the four groups as well as the mortality rates were compared. Results: This study investigated 307 patients. The timing of the first computed tomography (CT) and laboratory test order, CT and laboratory test result acquisition, first transfusion, and patient transfer from the ED to the operating room were similar in the four groups. Multivariable logistic regression analysis did not show a significant difference in mortality between the groups. Conclusion: ED crowding was not associated with delays in the initial assessment and treatment of severe trauma patients, or in their mortality rates.