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이태우(Tae-Woo Lee),정진형(Jin-Hyung Jung),강정훈(Jeong-Hoon Kang),최효섭(Hyo-Seop Choi),고재진(Jae-Jin Ko) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6
In this paper, we propose a system for extracting features from a large number of data collected in seconds on a moving vehicle and analyzing big data. The system proposed in this paper consists of a system that stores CSV data in a database and a system that accumulates preprocessed data based on the data stored in the database. In order to increase the efficiency of this system, multiprocessing is used. The proposed systems are designed and developed to find meaningful service models as an infrastructure system for developing business services for connected vehicles where data is collected in real time. Due to the nature of the collected data, time information is very important, and OpenTSDB, a NoSQL time series database, is used in consideration of effective analysis through graphs.
박진원(Jin-Won Park),김창우(Chang-Woo Kim),최효섭(Hyo-Seop Choi),강정훈(Jeong-Hoon Kang) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
본 논문은 전기차 연구개발을 위해 전기차의 방대한 데이터를 수집하고, 이를 어떻게 효율적으로 처리할 수 있는지에 대한 빅데이터 수집 처리 아키텍처를 제안한다. 구체적으로는 다수의 수집 모듈에서 얻는 데이터들을 하나의 퍼블릭 클라우드에 수집하고, 수집된 데이터들을 경량화하여 사용하기 위해 온프레미스 클라우드에 데이터를 저장한다. 또한, 이 논문에서는 전기차 데이터를 수집, 전처리, 저장하는 아키텍처를 구현하였다.
제조 산업 IoT 빅데이터 수집, 저장, 분석 컴포넌트 시스템 설계
채철승(Chul-Seoung Chae),김형구(Hyeong-Goo Kim),김창우(Chang-Woo Kim),최효섭(Hyo-Seop Choi),강정훈(Jeong-Hoon Kang) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
본 논문에서는 제조 산업 데이터의 수집, 저장, 분석 컴포넌트 시스템에 대하여 제안한다. 수집된 원본 데이터 저장, 전처리, 데이터 분석에 대한 각 기능의 시스템을 분할하고 데이터 특성별 분석 기능의 워크플로우를 구성 하였다. 또한 각 소프트웨어를 도커로 구성하여 다양한 소프트웨어 기능을 쉽고 빠르게 설치하여 운영 있도록 하였다.
이기남,이종현,문준일,최효섭 대한마취과학회 1988 Korean Journal of Anesthesiology Vol.21 No.1
Due to improvements in medical care, the socioeconomic level and public health, life expectancy has dramatically increased. Thus, advances in the development of life-support systems and the control of infection have resulted in many surgical and anesthetic procedures being performed on extremely elderly patients. In contrast to younger patients, elderly patients may manifest more than one pathologic process associated with progressive degenerative changes in various organs of the aged, espe- cially in the heart, brain, and kidney. Since both progressive degenerative change occuring in the elderly population and the cumulative incidence of disease in that population result in death intraoperatively or during the immediate postoperative period, the anesthesiologist must be particularly alert to the possibility of anesthetic risks in the elderly. The elderly patient is more likely to have hypertension, congestive heart failure, cardiac dysrhythmias, chronic pulmonary disease, and diabetes. Preoperative evaluation and treatment of those conditions must be extensively reviewed prior to the induction of anesthesia. To evaluate geriatric anesthetic experiences, 539 cases of patients aged over 60 years of 4,266 anesthetic cases admitted to P.M.C. from January to December, 1986 were analyzed according to age, sex, physical status, anesthetic technique an6 agents, surgical department, preoperative chest X-ray findings, preoperative E.C.G findings, and postoperative complica-tions. The results are as follows. 1) f 4,266 anesthetic patients 539(12.6%) were over 60 3ears of age and 322(59.7%) were males and 217(40.3%) females. 2) In the classification of physical status, the most common evidence was class 2 in 303 cases. Emergency surgery comprised 27.1% 1Yo. 3) The snesthesia technique employed was usually general anesthesia and this suggested that balanced anesthesia used with narcotics offers several advantages to geriatric patients. 4) In the surgical department, 310 cases(57.5%) were for general surgery, 75 cases(13,9%), orthopedic surgery; 57 cases(10.6%), urology; and 49 cases(9.1%), neurosurgery, respectively. Cancer was present in 198 cases(36.7%), 5) Preoperative chest X-ray findings: The most common finding was pulmonary tuberculosis in 44 cases(8.2%). Pneumonia, pulmonary emphysema, and so forth were also observed. 6) Preoperative E.C.G findings: The most common findings was myocardial ischemia in 48 cases(8.9%). Also myocardial infarction observed in 8 cases(1.5%) 7) Postoperative complications were as follows: The most common incidence was wourid infection in 29 cases(5.4%) followed by pneumonia. There were a number of miscellaneous complications. but postoperatively, they did not present any significant problems. 8) The overall mortality rate was 3.5%(19 cases). The difference in the mortality rate related to age was not statistically significant(p$gt;0.1), but the mortality rate related to physical status was statistically significant(p$lt;0.001). 9) Optimizing a patient's preoperative condition by the anesthesiologist, consultants, and other physicians was assumed to reduce perioperative morbidity and mortality.