http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Lee, Jehoon,Vasikaran, Samuel The Korean Society for Laboratory Medicine 2012 Annals of Laboratory Medicine Vol.32 No.2
<P>Osteoporosis is a major health problem worldwide, and is projected to increase exponentially due to the aging of the population. The absolute fracture risk in individual subjects is calculated by the use of algorithms which include bone mineral density (BMD), age, gender, history of prior fracture and other risk factors. This review describes the laboratory investigations into osteoporosis which include serum calcium, phosphate, creatinine, alkaline phosphatase and 25-hydroxyvitamin D and, additionally in men, testosterone. Parathyroid hormone (PTH) is measured in patients with abnormal serum calcium to determine its cause. Other laboratory investigations such as thyroid function testing, screening for multiple myeloma, and screening for Cushing's syndrome, are performed if indicated. Measurement of bone turnover markers (BTMs) is currently not included in algorithms for fracture risk calculations due to the lack of data. However, BTMs may be useful for monitoring osteoporosis treatment. Further studies of the reference BTMs serum carboxy terminal telopeptide of collagen type I (s-CTX) and serum procollagen type I N-terminal propeptide (s-PINP) in fracture risk prediction and in monitoring various treatments for osteoporosis may help expedite their inclusion in routine clinical practice.</P>
Employing Reinventing Government Framework to Accelerate Decentralization
Jehoon Lee 서울행정학회 2003 서울행정학회 학술대회 발표논문집 Vol.- No.-
This presentation discusses reinventing government framework and its adaptation into Korean government. Using a political economy approach. an analysis is made of the difference between Clinton-Gore's NPR experience and Korea's administration reform measures. Reinvention framework has been formulated by strategies and process to emphasize both structural and cultural changes in public sector. The NPR experiment was generally success in terms of effects of downsizing, and public trust, however. Korean reinvention efforts did not overcome inherent limits. The fact that unclearness of public-private distinction is the major factor that limited effective implementation of reforms in Korea. In addition. a major drawback of the Korean administrative reform is the lack of government partnership between national and local government. Next step for the reinvention efforts should be focused on decentralization. For the sake of decentralization, three major missions for central government should follow. to help set the direction and the expected results that local governments seek to achieve. This is a negotiation and a dialogue. between levels of government. not an imposition by the national government; (ⅱ) to hold local governments accountable for using their powers and management flexibilities to improve their performance. The national government can help create a ''performance measurement system" for local governments to monitor their efforts; (ⅲ) to provide support to local governments and to stimulate innovation by local governments.
Lee, Changmin,Choi, Sungho,An, Youngseo,An, Byeong-Seon,Lee, Woohui,Oh, Wan,Eom, Deokjoon,Lee, Jehoon,Yang, Cheol-Woong,Kim, Hyoungsub IOP 2019 Semiconductor science and technology Vol.34 No.10
<P>For sequential stacking of an Al<SUB>2</SUB>O<SUB>3</SUB> passivation layer and a main HfO<SUB>2</SUB> gate dielectric layer on In<SUB>0.53</SUB>Ga<SUB>0.47</SUB>As, we used single- and dual-temperature atomic-layer deposition processes, and systematically compared their effects on the dielectric-related electrical properties. When the deposition of Al<SUB>2</SUB>O<SUB>3</SUB> passivation layer (approximately 0.7−0.8 nm) took place at relatively low temperatures of 100 °C, an increase in the subsequent deposition temperature for HfO<SUB>2</SUB> (from 100 to 300 °C) assisted in decreasing both capacitance-equivalent oxide thickness and the number of bulk-related traps. However, the valuable reduction in both near-interface defect density and leakage current through the low-temperature Al<SUB>2</SUB>O<SUB>3</SUB> passivation approach was monotonically lessened with an increase in the process temperature for the subsequent HfO<SUB>2</SUB> deposition, which suggests the need for a careful optimization of a thermal budget for the dual-temperature process.</P>
이제훈(Jehoon Lee),황성일(Seongill Hwang),장동현(Donghyun Jang) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
Electric vehicles were developed based on the principle in which electrical energy is supplied from a high voltage battery to an electric motor for generation of driving force. Unlike the conventional vehicles, electric vehicles are operated only using a battery and motor without an engine. Since high voltage parts such as the electric motor use body insulation, they require a different failure diagnosis process compared to the conventional vehicles and it is extremely difficult to find the cause of failure. In this paper, changes in insulation resistance value were analyzed using an exclusive diagnostic equipment and high voltage measuring device to define insulation resistance value of each part in a vehicle that showed warning light and unintentional stopping due to insulation breakdown. The cause of warning light and unintentional stopping was found to be high voltage insulation breakdown occurring inside HPCU.
사전 시뮬레이션과 점항법 유도를 이용한 고정익 무인기의 자동 착륙 접근
이제훈(Jehoon Lee),박상혁(Sanghyuk Park) 한국항공우주학회 2021 韓國航空宇宙學會誌 Vol.49 No.7
본 논문에서는 고정익 무인기의 점항법을 이용한 자동 착륙 접근 유도에 대해 기술한다. 본 연구의 주요 특징은 Dubin’s 모델 기반 2D 사전 시뮬레이션을 이용하여 자동 착륙 접근에 필요한 경로점을 생성하고, 또한 사전 시뮬레이션으로부터 활주로까지의 남은 시간을 예측하여 이를 고도제어에 활용한다. 설계한 알고리즘의 성능은 시뮬레이션과 비행 시험을 통해 검증한다. This paper describes an automatic landing approach algorithm for fixed-wing UAVs using waypoint guidance. The proposed algorithm utilizes simple 2D Dubin’s vehicle pre-simulations in planning the waypoints for landing approach. The remaining time to reach the runway is also estimated in the pre-simulation, and it is used for altitude control. The performance of the designed algorithm was verified by simulations and flight tests.