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유태기(游太麒),고흥,조숙영 한국정치사회연구소 2023 한국과 국제사회 Vol.7 No.5
This study aimed to meticulously examine the influence of learning burnout on learning satisfaction among students enrolled in a Chinese music history course, with a particular focus on the mediating effect of learning motivation. To achieve this, we collected self-reported questionnaires from 391 music major students who were taking the Chinese music history course at a vocational college located in Hunan Province, China. The gathered data was analyzed using SPSS 25.0 for trend analysis and Pearson's correlation analysis. Additionally, AMOS 24.0 was employed for model fit analysis and path analysis. Through this research, we seek not only to identify concrete measures to enhance learning motivation and satisfaction among students of the Chinese music history course but also to provide foundational data to establish educational support necessary to reduce learning burnout.
嚴柱鉉,金鍾聲,兪台沂,李柱炅 최신의학사 1967 最新醫學 Vol.10 No.6
One 19-year-old male was admitted to P.N.U. Hospital on March 19, 1966, because of severe recurrent, colicky abdominal pain, chillness, nausea, vomitting, headache, sweating, extreme weakness and dizziness for two days'duration, and brownish dark urine on one occation after 24 hours of administration of the Secobarbital 400mg (4 cap.). Another 21-year-old male was admitted to this hospital, on March 21,. 1966, because of unconsciousness after ingestion of the secobarbital 1, 700mg (17 cap.).. After recovery from this state on the second days of admission, he has complained the . chillness, diffuse, colicky abdominal pain, myalgia, and headache, and also discharged dark urine in the evening. The diagnosis of the acute hemolytic anemia was established by means of the abovesymtoms, physical examinations and laboratory findings of which, the peripheral blood showed hemoglobinemia in the serum, increased bilirubin titer, mostly indirect, and spherocytosis; hemoglobin in the urine. After initial. response to therapy with blood transfusion (5 Pt.), and to control of fluid and electrolytes, the clinical and laboratory findings were much improved within the two week's of admission. The prednisolone has been administered 80 mg a day at first on the 3rd days of admission,- and then decreased the dose until 20 mg once a day for all the 5 days. Both the patients were discharged on the 14th day of admission and all have good condition until one year after then.
流行性 出血熱의 臨床的 觀察 : B.U.N. 値의 胸部 X-線所見에 關한 小考
李柱炅,申永基,金鍾聲,兪台沂 최신의학사 1967 最新醫學 Vol.10 No.5
During the autumn and winter in 1962 and spring in 1966, there were chances to face patients suffering from epidemic hemorrhagic fever..30 cases of the epidemic t'hemorrhagic fever patients were observed and treated throughout the entire admission course. . During the hospitalization, chest x-ray views were checked serially in the febrile or hypotensive phase, early oliguric phase, late oliguric,', phase and diuretic phase. Blood urea nitrogen levels were also checked simultaneously in the oliguric phase. 1. 36.7 per cent of . the cases showed pulmonary edema and cardiac enlargement on the chest x-ray views with bl000d urea nitrogen value showing 92.57mg % in average. There was a tendency that both chest x-ray changes and blood urea nitrogen levels were reaching peacks at the late oliguric phase. 2. Thre were slight cardiac enlargement with sightly increased bronchovascular markings and/or hilar shadows in 30 per cent of the cases. Blood ure nitrogen level showed 65.78 mg% in average. 3. 33.3 per cent of them were quite normal throughout whole clinical course on the chest x-ray views. However blood urea nitrogen level was 47.3mg// in average. 4. Generally the changes of the chest x-ray views and blood urea nitrogen levels changed in perallel with the clinical manifestations. It should be noted that pulmonary edema and cardiac enlargement are fundamentally caused by rather cardiopulmonary imbalance due to over-hydration than uremia per se. 5. Checking the chest x-ray changes is a relatively' simple and convenient method understanding substantial balance of the cardiopulmonary function in the oliguric phase and it is also a good indication to determine the amount of the daily supply of the fluid. 6. The most important phase for checking chest x-ray is that of the oliguric phase and there should be put an emphsis that the early initial chest x-ray view is a valuable one on reading the pictures checked subsequently in the oliguric phase.
저가형 IMU를 활용한 동적실험모델 기반 KNSB 로켓 자세 Kalman Filter 제안
신한륭(Han-Ryung Shin),주진우(Jinwoo Ju),김대중(Daejoong Kim),김우진(Woojin Kim),안민섭(Minseob Ahn),유태기(Taegi Yoo),임준형(Junhyung Im),함민우(Minwoo Ham),공선영(Seonyoung Kong),김민정(Minjeong Kim),김온유(Onyu Kim),남궁아향(Ahyang Na 한국추진공학회 2023 한국추진공학회 학술대회논문집 Vol.2023 No.11
KNSB(질산칼륨-소르비톨) 연료기반 소형 로켓의 자세제어 시스템은 로켓의 자세측정의 부정확성으로 인하여 정확한 자세제어가 어려운 상태이다. 이에 대한 해결책으로 Extended Kalman-Filter(EKF)가 대두되었지만, 저가형 IMU센서의 관측 값의 부정확성과 저성능의 MCU상에서는 충분한 성능을 발휘하지 못하고 있다. 이에 따라 본 논문에서는 EKF와 유사한 성능을 내는 Kalman-Filter(KF)를 제안하고, 이와 함께 저가형 IMU센서의 성능을 개선하는 방안을 제시한다. 기존의 non-Linear Time-Variant System의 일종인 소형 로켓을 실험을 기반으로 한 모델을 통하여 Linear Time-Invariant System으로 근사할 수 있는 Transfer Matrix를 설계하는 방법을 제안한다. 최종적으로 소형 로켓의 자세를 수학적으로 기술하고, 이를 기반으로 자세제어를 위한 PID Gain 도출 방법에 대하여 제시하겠다. The Attitude control system of KNSB (potassium nitrate-sorbitol) fuel-based small rockets is difficult to accurately control the Attitude due to the inaccuracy of the rockets Attitude measurement. Extended Kalman-Filter (EKF) has emerged as a solution to this, but it is not performing sufficiently on the MCU(Micro Controller Unit) with inaccuracies and low performance of low-cost IMU sensors. Accordingly, this paper proposes Kalman-Filter (KF), which has similar performance to EKF, and suggests ways to improve the performance of low-cost IMU sensors. We propose a method of designing a Transfer Matrix that can approximate a small rocket, a type of existing non-Linear Time-Variant System, to a Linear Time-Variant System through an experimental-based model. Finally, the posture of a small rocket will be mathematically described, and based on this, a method of deriving a PID gain for posture control will be presented.