랜덤 포리스트를 이용한 비제어 급성 출혈성 쇼크의 흰쥐에서의 생존 예측

최준열,김성권,구정모,김덕원,Choi, J.Y.,Kim, S.K.,Koo, J.M.,Kim, D.W. 대한의용생체공학회 2012 의공학회지 Vol.33 No.3

Hemorrhagic shock is a primary cause of deaths resulting from injury in the world. Although many studies have tried to diagnose accurately hemorrhagic shock in the early stage, such attempts were not successful due to compensatory mechanisms of humans. The objective of this study was to construct a survival prediction model of rats in acute hemorrhagic shock using a random forest (RF) model. Heart rate (HR), mean arterial pressure (MAP), respiration rate (RR), lactate concentration (LC), and peripheral perfusion (PP) measured in rats were used as input variables for the RF model and its performance was compared with that of a logistic regression (LR) model. Before constructing the models, we performed 5-fold cross validation for RF variable selection, and forward stepwise variable selection for the LR model to examine which variables were important for the models. For the LR model, sensitivity, specificity, accuracy, and area under the receiver operating characteristic curve (ROC-AUC) were 0.83, 0.95, 0.88, and 0.96, respectively. For the RF models, sensitivity, specificity, accuracy, and AUC were 0.97, 0.95, 0.96, and 0.99, respectively. In conclusion, the RF model was superior to the LR model for survival prediction in the rat model.

Association Between Shift Working and Brain Morphometric Changes in Workers: A Voxel-wise Comparison

최준열,Kim Sungmin,Lee Yongho,Kim Dohyeon,Lee Wanhyung 한국산업안전보건공단 산업안전보건연구원 2025 Safety and health at work Vol.16 No.2

Objective There is abundant evidence from observational studies linking various health problems to shift work, but there is a lack of brain-based neurological evidence. Therefore, we examined morphometric changes on brain magnetic resonance imaging (MRI) between shift and non-shift workers. Methods A total 111 healthy workers participated in this study and underwent brain MRI, with the analysis incorporating merged workers' health surveillance data from regional hospital workers. Voxel-based morphometry analysis was used to investigate regional changes in the gray matter volume. To investigate the association of structural changes between shift workers and non-shift workers, a general linear model and threshold-free cluster enhancement were used with covariates, including total intracranial volume, age, and sex. Results After family-wise error correction, non-shift workers exhibited a significantly larger cerebellar region (p < 0.05) than shift workers. Conversely, the inferior parietal gyrus was found to be significantly larger in shift workers than in non-shift workers with family-wise error correction. Conclusions We observed increased clusters in the brains of both shift and non-shift workers, suggesting that the acquired occupational environment, including the shift work schedule, could influence brain neuroplasticity, which is an important consideration for occupational health.

해외건설 실적분석을 통한 문제점 도출 및 시장 확대방안에 관한 연구

최준열,전락근,김재준,Choi, Jun-Youl,Jeon, Rak-Keun,Kim, Jae-Jun 한국건설관리학회 2006 건설관리 : 한국건설관리학회 학회지 Vol.7 No.4

The domestic construction market is recovered after a foreign exchange crises but recently it's daunted again because of the sustainable real estate regulation policy by the government. The other aspect, after the WTO(World Trade Organization) system opened overseas construction is growing continuously with growth of international economy and opening of market through world. Moreover, for ballooning oil prices an orders increase by oil-producing countries, the Middle East, gives good chances to domestic construction enterprises. But, the domestic firms decrease on our domain by chases of developing country and high-technology or advanced country. This research will indicate processes of our construction business to analyze performance record about our overseas construction from the 1970s to present. Based on the results it intends to search for problems of our construction enterprises and provide useful analytic data for expansion of overseas construction market.

심술꾼! '포도뿌리혹벌레' 극성 - 30년만에 발생, 치명적 피해주는 진딧물상과 해충 - 저항성대목 이용한 재배법 개선해야

최준열 한국작물보호협회 1998 자연과 농업 Vol.19 No.4

AUTOSAR 기반 공유자원이용 스케줄링 구조

최준열,조준형,최윤자 대한임베디드공학회 2018 대한임베디드공학회논문지 Vol.13 No.6

As a result of the technological advances in the E / E system, automotive system can provide advanced functions for safety and comfort. In addition, mechanical systems is changed to the electronic system. And the systems perform cooperative functions through communication. So the E / E system becomes more complicated as the size of the system increases. In order to secure the safety of complicated E / E system, ISO26262 standard require that Freedom from Interference and Sufficient Independence be met. In this paper, we propose a software scheduling method that can guarantee the independence between decomposed components after software decomposition and software development of ASIL D level EPB (Electronic Parking Brake) system

미국의 지방교육세제와 지방교육재정 배분제도

최준열 한국교육재정경제학회 1993 교육재정경제연구 Vol.2 No.2

농작물 병해충 분류·생태 정보(PISYS) 확대 보안

최준열,한만종 한국응용곤충학회 2002 한국응용곤충학회 학술대회논문집 Vol.2002 No.1

OFP 재컴파일 최소화를 위한 동적 인터페이스 설계 기법

최준열,이재현,조승훈,신상면 한국항공우주학회 2014 한국항공우주학회 학술발표회 논문집 Vol.2014 No.11

항공전자 장비의 수가 점차 증가함에 따라 장비 간 연동되는 데이터의 변화도 빈번해지고 있다. 과거에는 항공전자 장비들이 독립적으로 구성돼 동작하여 데이터의 연동이 필요 없었으나, 현재에는 각 장비들이 네트워크를 형성하여 MIL-STD-1553B, ARINC-429, Analog, Discrete, RS-422 데이터 등을 주고받으며, 데이터 의미변경이나 특정 기능변경을 위해서는 OFP 재빌드가 필요하다. 본 논문에서는 동적 인터페이스 디자인을 통해 장비들 간 통신 데이터 변경 시 OFP 빌드를 최소화하는 기법을 제안하고자 한다. 제안된 기법은 헬기 상태감시시스템(HUMS) 국산화개발 과제에 적용하여 제안된 기법의 이점을 확인하고, 고려해야 할 사항들을 도출한다. 또한 HUMS 개발과제를 통해 본 기법의 안전성을 확인 및 검증하고 다른 항공전자 장비에 확장 적용할 수 있는 방법을 모색한다. Changing interface data are frequent between equipments as increasing the number of avionics. In the past, The avionics are operating independently. But avionics currently use MIL-STD-1553B, ARINC-429, Analog, Discrete, and Serial for networking. And re-build is performed for changing description of data. In this paper, we propose dynamic interface design to change data description without re-build. Then, the HUMS(Health and Usage Monitoring System) development project will apply the proposed method. And we will find the benefits and considerations of proposed at the same time. Finally we will check the performance and safety of HUMS project applied dynamic interface design. And we describes a method of the technique apply to other systems.

한국산 미기록속 Anteromorpha의 보고 (벌목:검정알벌과)

최준열,권기면 한국응용곤충학회 2000 한국응용곤충학회 학술대회논문집 Vol.2000 No.1

한일관계 개선 이후 한일 경제 관계의 변화와 특징

최준열,이창민 한양대학교 일본학국제비교연구소 2024 비교일본학 Vol.60 No.-

본고에서는 2019년 수출규제 이후와 2023년 한일관계 개선 이후의 상황을 비교함으로써 변화된 한일 경제 관계의 성격을 분석했다. 2023년 한일관계 개선 이후 한일 협력 의제는 한 미일 3국의 협력 메커니즘 속에서 기존의 무역, 투자에 더해 공급망, 과학기술협력, 다자협력 과 같은 새로운 영역으로 확대되었다. 다만 경제안전보장이라는 시대적 흐름 속에서 한일 기 업 간 협력 사례뿐만 아니라 경쟁 사례도 다수 관찰되고 있다. IPEF와 CPTPP 같은 다자협력 의 틀 안에서 한일협력 의제를 조율하는 것도 국내외 정치적인 상황과 맞물려 쉽지 않은 형 국이다. 한일관계 개선 이후 한일 경제 관계는 협력과 경쟁이 중층적으로 복잡하게 전개되는 가운데 한미일 안보협력, 신통상 의제 등 새로운 환경에 놓이게 되었다. This paper analyzed the transformed economic relationship between Japan and Korea by comparing the periods following the export restrictions in 2019 and the improvement in relations in 2023. As Japan–Korea relations have improved, the cooperation agenda has expanded to include new areas such as supply chains, scientific and technological cooperation, and multilateral collaboration within the trilateral framework of the U.S.–Japan–Korea alliance. However, in the current era of economic security, numerous instances of both cooperation and competition between Japanese and Korean corporate have been observed. Coordinating cooperation agenda within multilateral frameworks such as the IPEF and CPTPP remains challenging due to domestic and international political dynamics. The economic relationship between two countries has developed in a complex and multilayered manner, characterized by both cooperation and competition, and is now situated within a new environment of U.S.–Japan–Korea security cooperation and emerging trade issues.