Pulmonary Langerhans Cell Histiocytosis in an Adult Male Presenting with Central Diabetes Insipidus and Diabetes Mellitus: A Case Report

최은성,김상하,임정수,권우철,정순희,박일환,이명규,리원연,용석중,이석정,정예령,최지원,최지선,정순택,유진세 대한결핵및호흡기학회 2015 Tuberculosis and Respiratory Diseases Vol.78 No.4

Pulmonary Langerhans cell histiocytosis is an uncommon diffuse cystic lung disease in adults. In rare cases, it can involve extrapulmonary organs and lead to endocrine abnormalities such as central diabetes insipidus. A 42-year-old man presented with polyphagia and polydipsia, as well as a dry cough and dyspnea on exertion. Magnetic resonance imaging of the hypothalamic-pituitary system failed to show the posterior pituitary, which is a typical finding in patients with central diabetes insipidus. This condition was confirmed by a water deprivation test, and the patient was also found to have type 2 diabetes mellitus. Computed tomographic scanning of the lungs revealed multiple, irregularly shaped cystic lesions and small nodules bilaterally, with sparing of the costophrenic angles. Lung biopsy through video-assisted thoracoscopic surgery revealed pulmonary Langerhans cell histiocytosis. On a follow-up visit, only 1 year after the patient had quit smoking, clinical and radiological improvement was significant. Here, we report an uncommon case of pulmonary Langerhans cell histiocytosis that simultaneously presented with diabetes insipidus and diabetes mellitus.

제조업 노동자의 근골격계 데이터셋과 부담요인 클래스 분류 모델 연구

최은성 한국경영정보학회 2023 한국경영정보학회 학술대회논문집 Vol.2023 No.06

베트남에서 유입된 뇌수막염을 동반한 뎅기열

최은성,김정민,이현아,류성열 대한신경과학회 2011 대한신경과학회지 Vol.29 No.1

Dengue fever is an acute febrile disease caused by the dengue virus, which belongs to the family Flaviviridae. The increasing number of people traveling abroad has increased the number of cases of imported dengue fever in Korea. The most common symptoms in patients with dengue fever are malaise, fever, musculoskeletal pain, headache, nausea,vomiting, and abdominal pain. Neurological manifestations such as myelitis, encephalitis, and cranial nerve palsies have been recognized as clinical consequences of dengue infection, but meningitis is a rare complication. We report the case of a 38-year-old man who presented with fever, headache, and nuchal rigidity while traveling in Vietnam. The etiology of meningitis was confirmed by the presence of dengue IgM antibody in his serum. This case report highlights the potential of dengue infection as a cause of meningitis.

자주포 경제수명 결정에 관한 연구

최은성,최석철 한국군사과학기술학회 2000 한국군사과학기술학회지 Vol.3 No.1

This research paper deals with the problem of determining the optimal life time in terms of economical sense for a self-propelled artillery. Equivalent Annual Cost Method(EACM) is used to evaluate the optimal life time, based on the acquisition cost, and the operation and maintenance cost. It is assumed that the operation and maintenance cost includes the costs for spare parts, petroleum and ammunition for training. From the result of this study, the optimal life time for a self-propelled artillery is between 13.9 years and 16.1 years with 95% confidence interval.

야식섭취 및 수면의 질과 청소년 비만의 관계: 부산시 일개 중학교를 중심으로

최은성,손창우 한국보건교육건강증진학회 2023 보건교육건강증진학회지 Vol.40 No.3

Objectives: The purpose of this study was to analyze the relationship between night eating, sleep quality and adolescent obesity and to present basic data for obesity prevention policy in adolescents. Method: A self-administered survey using a structured questionnaire was administered to 220 students from a middle school in Busan. Multiple logistic regression analysis was conducted to investigate the effects of night eating and sleep quality on obesity in adolescents using SPSS 27.0. Results: Night eating of snacks three or more times a week and low subjective sleep quality had a statistically significant effect on obesity, suggesting that prevent obesity in adolescents not only night eating of meals but also snacks such as sweets should be avoided. In addition, it is necessary to determine why low subjective sleep quality affects obesity so that the quality of sleep in adolescents can be improved. Conclusion: Based on the results of this study, in order to prevent obesity in adolescents, a realistic and effective health education and measures to improve the home and community environment should be established that can reduce the frequency of nighttime eating of such foods as ramen, fast food, snacks, and beverage and improve subjective sleep quality.

LiDAR 센서를 이용한 비규격 화물의 논스톱 자동 계측 통합 시스템

최은성,김지연,김예슬,정석찬,전영준 한국항해항만학회 2022 한국항해항만학회 학술대회논문집 Vol.2022 No.2

화물 선박의 전복사고가 매해 발생하고 있음에도 화물을 측정하지 않고 서류에 의존하는 방식으로 화물을 선적하고 있습니다. 우리는 사고의 원인을 사전에 차단할 수 있는 자동 계측 시스템을 연구하였습니다. 본 논문의 시스템은 LiDAR 센서를 이용하여 비규격 화물이멈추지 않고 자동 계측되어 인력과 시간의 소요를 줄이고 산출된 체적과 3D 모델을 제공합니다. 게다가 화물 차량에 실린 화물을 내리지 않고도 화물의 체적을 산출할 수 있어 항만의 효율성을 향상할 수 있을 것으로 기대합니다.

한·일 게임 산업 분석 및 전망

최은성 경희대학교 대학원 일어일문학과 2007 일본학논집 Vol.22 No.-

사용자 시스템 성능 관리를 위한 엔터프라이즈 메식저가 결합된 빅데이터 응용 아키텍처

최은성,장종훈,민대환 한국IT서비스학회 2015 한국IT서비스학회 학술대회 논문집 Vol.2015 No.추계

탄소섬유강화 복합재료 성형시 화학수축에 의한 변형연구

최은성,김위대 한국복합재료학회 2018 Composites research Vol.31 No.6

As the autoclave process progresses in a given cure cycle, residual stress in the composite product is induced by cure shrinkage of the resin. As a result, It generates the thermal deformation such as spring-in and warpage, and the inaccuracy of the final product increases. It is important to predict thermal deformation in aerospace parts which require precise fabrication. The research has been done on predicting and grasping curing process of composite material. In this study, the cure mechanism of composite materials according to the process is predicted through finite element analysis, and the effect of cure shrinkage on thermal deformation generated by the process is analyzed. 복합재료는 주어진 경화 사이클(cure cycle)로 오토클레이브 공정이 진행됨에 따라 수지의 화학수축, 열팽창계수 등에 의한 제품 내 잔류응력(residual stress)이 발생한다. 이로 인해 spring-in, warpage와 같은 열 변형이 발생하고 최종 제품의 수치 정확성이 감소한다. 구조물의 정밀한 제작이 요구되는 항공우주분야에서는 열변형으로인한 문제를 해결하는 것이 중요하다. 따라서 복합재료의 경화과정을 예측하고 이해하기 위한 연구가 활발히 이루어지고 있다. 본 연구에서는 공정과정에 따른 복합재료의 경화메커니즘을 유한요소해석을 통해 예측하였고, 공정에 의해 발생하는 열변형에 대한 화학수축의 영향을 열팽창계수와 비교하여 분석하였다.

視力低下에 對한 臨床的 考察

최은성,류혜정,채병윤,Choi, Eun-Sung,Ryu, Hye-Jeong,Chae, Byung-Yoon 대한한방안이비인후피부과학회 1996 한방안이비인후피부과학회지 Vol.9 No.1

We observed 79 patients, who visited the Department of Oph. & Otorhinolaryngology in Oriental medicine of Kyung Hee University Medical Center from July 1995 to June. 1996, with the complaint of decreased visual acuity. The results were as follows. 1. In the incidence of decreased visual acuity, men's was $46.84\%$(37 cases) and women's was $53.16\%$(42 cases), which showed that more women were suffering decreased visual acuity than men. In the incidence of myopic ametropia and astigmatic ametropia among the total patients, men's was $44.62\%$(29 cases) and $37.50\%$(9 cases) each, and women's was $55.38\%$(36 cases) and $62.50\%$( 15 cases) each, which also showed that more women were suffering myopia and astigmatism than men. 2. The average age of patients was 11.08 years at the first visit. The most were the patients from 6 to 15 years old, with 63 cases($79.74\%$). 3. The age of onset in the decreased visual acuity was mainly 6∼10 years with 45 cases($56.96\%$). In the case of myopic ametropia and astigmatic ametropia, the age of onset was also mainly 6∼10 years with 65 cases($60.00\%$), and with 12 cases($50.00\%$) each. 4. In ABO blood type, the frequency was, A type, O type, B type and AB type in order. In men, O type was the most, while in women, A type. 5. In the liking for cool or warm food or tepidity, the liking for cool food was the most in both men and women. 6. The type of decreased visual acuity was mainly myopic ametropia with 65 cases($82.28\%$). Astigmatic ametropia was $30.38\%$ with 24 cases, hyperopic ametropia $2.53\%$ with 4 cases, and the decreased visual acuity accompanied by amblyopia $7.59\%$ with 4 cases. 7. At the first visit, the average visual acuity of O.D. was 0.29 and that of O.S.. 0.24, which showed that O.S.. is worse than O.D.. The visual acuity below 0.2 was the most, $63.29\%\;in\;O.D..\;72.15\%$ in O.S.. 8. In the treatment period, 4∼7 weeks occupied $35.44\%$ with 28 cases, 8∼11 weeks $30.38\%$ with 24 cases, so the treatment period was mainly these two periods with 52 cases($65.82\%$). 9. The average frequency of acupuncture treatment per week was mainly 2.1∼3.0 times with 45 cases($56.96\%$). In this case, men was 24 cases($53.33\%$) and women 21 cases($46.67\%$), so men was more than women. 10. The frequency of herbal prescription was mainly Gamijungjitang and Gamijingjibogansan with 76 cases($85.39\%$).