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이민석(Minseok Lee),김정한(Junghan Kim),엄영익(Young Ik Eom) 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.2A
안드로이드의 달빅 가상 머신은 자바 소스코드로부터 변환된 달빅 바이트코드를 실행한다. 달빅 바이트코드는 자바 바이트코드에 비해 차지하는 메모리도 작으며 담고 있는 명령어의 수도 적기 때문에 메모리와 CPU 파워에 제한이 있는 모바일 환경에서 사용될 때 매우 유리하다. 그러나 자바 소스코드로부터 런타임에 타겟 머신 코드로 변환될 때까지 수행되는 최적화는 아직 미미한 수준이다. 그러므로 정적인 컴파일 타임이나 JIT 컴파일 타임에 추가적인 작업을 해서 최적화의 수준을 향상시킬 필요가 있다. 본 논문에서는 최적화의 여지가 있는 자바 소스코드를 달빅 바이트코드로 변환하는 실험과 달빅 JIT 컴파일러의 소스코드 분석 작업을 수행한다. 그리고 이를 통해 추가적인 최적화 작업의 당위성과 토대를 마련하고 실제 개선 방법에 대한 아이디어를 제시한다.
강선과 강재판을 이용하는 구조물 횡변위 제어법의 효과에 관한 연구
이민석 ( Lee Minseok ),홍갑표 ( Hong Kappyo ) 한국구조물진단유지관리공학회 2010 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.14 No.1
This paper introduces a tendon method of structure using cable tensile forces and steel plate increased the strength and stiffness of the tendon structure. For knowing the control effectiveness this paper performed structural analysis according to different stiffness of the steel plate and different tension of cable, and consequently the tendon method using the cable and steel plate can effectively control lateral drift. So based on analyzed results the suggested tendon method is good for repair and reinforcement work of the existing structures or new construction without gaining the weight of the structure.
한국인 건선관절염 환자의 임상적 특징과 치료양상에 대한 후향적 단일기관 연구
이민석 ( Minseok Lee ),이재원 ( Jae Won Lee ),김태균 ( Tae-gyun Kim ),이민걸 ( Min-geol Lee ) 대한피부과학회 2018 대한피부과학회지 Vol.56 No.5
Background: Psoriatic arthritis (PsA) is a seronegative inflammatory arthritis associated with psoriasis. The prevalence of PsA varies across different countries, and a few previous studies have reported that 9∼17% of Korean patients with psoriasis present with PsA. However, limited data are available regarding the clinical features and treatment of Korean patients with PsA. Objective: To evaluate the clinical features of Korean patients with PsA and the treatment modalities used in the real-world setting. Methods: This study was a retrospective single-center study. We analyzed 101 Korean patients who had been diagnosed with PsA based on the Classification Criteria for Psoriatic Arthritis (CASPAR). We reviewed the patients’ medical records, Psoriasis Area and Severity Index (PASI) score, body surface area (BSA), manifestation pattern of PsA, and treatment course. Results: Our study included 101 patients. The mean age was 50.7 years. The mean PASI score was 8.6, and the mean BSA was 11.5%. Spondylitis was the most common manifestation (40.6%). In most patients, psoriatic lesions preceded the onset of PsA (57.4%). Psoriasis and PsA occurred simultaneously in 32.7%, and PsA developed prior to psoriasis in 9.9% of patients. The administration of nonsteroidal anti-inflammatory drugs (NSAIDs) was the most commonly utilized treatment strategy (82.2%), followed by the use of methotrexate and sulfasalazine. Twenty-two patients were treated with biologics with favorable efficacy. Conclusion: Spondylitis was the most common manifestation in patients. NSAIDs, methotrexate and sulfasalazine were the drugs most commonly used to treat Korean patients with PsA. Dermatologists should be mindful of this entity, and during history taking at the patient’s initial visit, those with psoriasis should be asked, “Do you have any pain or swelling of joints?” to ensure early diagnosis of PsA. (Korean J Dermatol 2018;56(5):308∼313)
공유자전거의 여가 목적적 사용의도에 대한 분석: UTAUT2 모형을 적용하여
이민석(Lee, Minseok),김민정(Kim, Minjeong),이철원(Lee, Chulwon) 한국여가레크리에이션학회 2021 한국여가레크리에이션학회지 Vol.45 No.3
This study was conducted by applying the UTAUT2 model to analyze the intention to use shared bicycles for leisure purposes for shared bicycle users. Data was sampled online and offline using purposive selection, and 476 questionnaires were used after data cleaning. SPSS 24 and AMOS 22 were used as statistical processing programs. Among the components of UTAUT2, it was found that performance expectancy, effort expectancy, facilitating conditions, price value, hedonic motivation, and habit influence intention to use. Social influence did not affect intention to use, and facilitating conditions did not affect Leisure purpose usage. Finally, it was confirmed that intention to use affects leisure purpose usage. These results proved that performance expectancy, effort expectancy, facilitating conditions, price value, hedonic motivation, and habit are the main factors in using shared bicycles. In addition, it is significant that it has proved that habit is the factor that has the greatest influence on allowing shared bicycles to be used for leisure purposes.
베이비붐 세대의 진지한여가 신체활동 참여가 레저스마트기기 사용의도에 미치는 영향: 확장된 TAM모형을 적용하여
이민석(Lee, Minseok),이평원(Lee, Pyoungwon),서광봉(Suh, Kwangbong) 한국여가레크리에이션학회 2021 한국여가레크리에이션학회지 Vol.45 No.4
The goal of study was to analyze of babyboom generations’ leisure smart devices using intention by applying extended technology acceptance model with focusing on serious leisure. A total of 294 questionnaires were collected from babyboom generations who participated in physical activity for leisure. Data were analyzed by SPSS 24 program and AMOS 20 program. As analysis methods, frequency analysis, factor analysis, correlation analysis , validity test and structural equation model analysis were used. The research results are reported as follows. First, babyboom generation’s serious leisure had a significant effect on perceived usefulness. Second, babyboom generation’s serious leisure had a significant effect on perceived ease of use. Third, babyboom generation’s serious leisure had a significant effect on using intention. Fourth, Significant effects of all sub-factor pathways constituting the technology acceptance model were confirmed. The significance of this study can be found in that it tried to reduce the leisure alienation of babyboom generations.