http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yewon Park,WonTae Jung,양은솔,Kyu-Yeol Nam,Woo-Ri Bong,Jaehee Kim,Kyu Yeon Kim,SeungHwan Lee,Joo-Youn Cho,Jang-Hee Hong,JaeWoo Kim 대한임상약리학회 2022 Translational and Clinical Pharmacology Vol.30 No.1
UI026 is an expectorant and antitussive agent which is a new combination of Pelargonium sidoides extract and Coptis extract. The bioactive compounds of Pelargonium sidoides and Coptisextracts were identified as epicatechin and berberine, respectively. This study evaluated the effect of food on the pharmacokinetics (PKs) and safety of UI026. A randomized, openlabel, single-dose, 2-treatment, parallel study in 12 healthy male subjects was performed. Subjects received a single oral dose of UI026 (27 mL of syrup) under a fed or fasted condition according to their randomly assigned treatment. Blood samples for the PK analysis were obtained up to 24 hours post-dose for berberine and 12 hours post-dose for epicatechin. The PK parameters were calculated by non-compartmental analysis. In the fed condition, the mean maximum plasma concentration (C max ) and mean area under the plasma concentrationtime curve from time zero to the last observed time point (AUC last ) for berberine were approximately 33% and 67% lower, respectively, compared with the fasted condition, both showing statistically significant difference. For epicatechin, the mean C max and mean AUC lastwere about 29% and 45% lower, respectively, compared to the fasting condition, neither of which showed a statistically significant difference. There were no drug-related adverse events. This finding suggests that food affects the systemic exposure and bioavailability of berberine and epicatechin.
FMI기반 co-simulation에서 step size control을 위한 Markov chain을 사용한 예측 방법
홍석준(Seokjoon Hong),임덕선(Ducsun Lim),김원태(Wontae Kim),조인휘(Inwhee Joe) 한국전기전자학회 2019 전기전자학회논문지 Vol.23 No.4
FMI를 기반으로 하는 co-simulation의 마스터 알고리즘(MA)에서 시뮬레이션 결과의 정확도를 높이는 방법으로 zero crossing 포인트를 찾기 위한 Bisectional algorithm을 사용할 수 있다. 그러나 이 알고리즘은 많은 Rollback을 야기한다. 따라서 본 논문에서는 제안하는 MA는 Bisection algorithm을 통해 zero crossing 포인트를 검출하면서도 반복되는 구간 그래프를 분석하여 그 값을 Markov chain을 적용하여 다음 구간을 예측하여 이를 step size에 적용한다. 시뮬레이션에서 실제 Rollback이 발생했을 때 그래프 형태별로 변화되는 step size를 배열로 저장하고, 이룰 다음 예측 구간에 적용함으로서 Rollback을 최소화하는 알고리즘을 제안한다. 시뮬레이션 결과를 통해 제안하는 알고리즘이 기존 알고리즘에 비해 최대 20%이상의 시뮬레이션 시간이 감소되는 것을 확인하였다. In Functional Mockup Interface(FMI)-based co-simulation, a bisectional algorithm can be used to find the zerocrossing point as a way to improve the accuracy of the simulation results. In this paper, the proposed master algorithm(MA) analyzes the repeated interval graph and predicts the next interval by applying the Markov Chain to the step size. In the simulation, we propose an algorithm to minimize the rollback by storing the step size that changes according to the graph type as an array and applying it to the next prediction interval when the rollback occurs in the simulation. Simulation results show that the proposed algorithm reduces the simulation time by more than 20% compared to the existing algorithm.
미세 이물질이 혼입된 볼베어링의 고장 진단을 위한 정량화 열화상에 관한 비파괴평가 연구
홍동표(Dongpyo Hong),김원태(Wontae Kim) 한국비파괴검사학회 2014 한국비파괴검사학회지 Vol.34 No.4
본 고에서는 미세 이물질이 삽입된 볼베어링에 대하여 비파괴평가를 제안하였다. 비파괴평가 연구로서 동적인 하중조건하 회전체의 동작에 따른 고장 진단을 위해 비접촉식 정량화된 적외선 열화상 기법을 적용하였다. 이로부터 볼베어링에 대한 적정 체결조건을 설정하였고 고장 상태감시에 대한 수동형 열화상시험을 수행하였다. 본 연구로부터, 적외선 열화상 시험은 조기의 결함 진단을 평가하기 위해 정상 및 이물질이 삽입된 시편들로부터의 온도 프로파일링을 비교, 분석되었다. 연구의 비파괴검사 평가의 결과로써, 고장에 이르는 이상단계에 따른 볼베어링의 온도 특성이 정량적으로 분석되었다. In this study, a non-destructive evaluation (NDE) mothod is proposed for ball bearings contaminated with micro foreign substances, which were inserted into a ball bearing to create a defective specimen. The non-contact quantitative infrared thermographic technique was applied for NDE condition monitoring. Passive thermographic experiments were conducted to perform early fault diagnosis, for bearings operated at optimized torque status under a dynamic load condition. The temperature profiles for normal and defective specimens were quantitatively compared, and the thermographic data analyzed. Based on the NDE results, the temperature characteristics and abnormal fault detection of the ball bearing were quantitatively analyzed according to the rise in temperature.
( Kim Bora ),( Lim Serah ),( Hong Wontae ),( Kim Heejung ) 정신간호학회 2019 정신간호학회지 Vol.28 No.3
Purpose: The purpose of this study was to examine mediating effects of pleasurable activities on the relationship between depression and suicidal ideation among the elderly moderated by living arrangement such as those living alone (LA) versus those living with others (LWO). Methods: This study is a cross-sectional and correlational design using secondary data analysis of the 2017 Korean National Survey on the Elderly (2,416 for the LA group, and 6,106 for the LWO group). Logistic regression analysis was conducted comparing effects of pleasurable activities on suicidal ideation between the two groups. Results: For suicidal ideation, there were significant differences in suicidal ideation by sex, religion, and senior center visits in the LA group, while the LWO group had no significant differences identified. Both groups showed significantly different associations of suicidal ideation by socioeconomic status, gathering, meaningful interaction, and depression. Senior center visits were statistically significant in the LA group, while there was not significant in the LWO group. Conclusion: Visiting senior centers can reduce suicidal ideation of the LA group. To prevent suicidal ideation of the elderly living alone, mental health specialists should provide community-cooperative environments to address these issues, especially LA elderly.
이현정,신윤오,안동현,홍성도,이원태 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.5
Objectives : Recently, the number of adolescent criminals hospitalized for evaluation or treatment of mental illness is increasing. The aim of this study was to provide basic information for the evaluation and treatment of adolescent misconducts, based on their impulsivity. Methods : Barrat's impulsivity test was done to 64 adolescent criminals under age of 18 who were admitted to a Juvenile School between Oct. 1, 2003 and June 30, 2004. According to their recognizing impulsivity scores, the upper 30% group (high impulsivity group : HIG) and the lower 30% group (low impulsivity group : LIG) were selected. The two groups were compared on socio-demographic data, crime characteristics, psychiatric diagnoses, Evoked Potential Latency and Amplitude, Cognitron and IQ. Results : 1) The high impulsivity group had lower IQ than the low impulsivity group (p<0.01). 2) No difference was found in the seriousness of committed crimes, number of crimes and the age of first committed crimes. However, the high impulsivity group fended acting alone in committing crimes (p<0.05), and more frequently upeated same crimes (p<0.01). 3) Evoked potential latency was prolonged on FzN100 (p<0.05), CzN100 (p<0.05), PzN100 (p<0.01) and amplitude was increased on FzN100 (p<0.05), CzN100 (p<0.05), PzNl100 (p<0.05) in high impulsivity group. 4) High impulsivity group showed lower scores on NOCR (p<0.01), NOCYR (p<0.01), NOCNR (p<0.01) in Cognitron. PzN100 (p<0.05) latency prolongation. CzN100 latency prolongation had positive correlation with PzN100 latency prolongation (p<0.05). 5) While the misconduct was most common problem in both groups, more ADHD diagnosis was identified in the high impulsivity group. The most frequent medical problem in low impulsivity group was with diseases of internal medicine (p<0.01) and anxiety disorders (p<0.01). Conclusion : The adolescent cnminals with high impulsivity tend to have lower intelligence and commit crimes repeatedly. They are frequently diagnosed to have ADHD. When they are compared to low impulsivity group, big differences are found in prolonged evoked potential latency and increased amplitude on N100. Hence, in the treatment and rehabilitative programs for them, considering these characteristics may be helpful.
Fault Diagnosis of Ball Bearings within Rotational Machines Using the Infrared Thermography Method
Dongyeon Kim,Hanbit Yun,Sungmo Yang,Wontae Kim,Dongpyo Hong 한국비파괴검사학회 2010 한국비파괴검사학회지 Vol.30 No.6
In this paper, the novel approach for the fault diagnosis of the bearing equipped with rotational mechanical facilities was studied. As research works, by applying the ball bearing used extensively in many industrial fields, experiments were conducted in order to propose the new prognostic method about the condition monitoring for the rotational bodies based on the condition analysis of infrared thermography. Also, by using the vibration spectrum analysis, the real time monitoring was performed. As results, it was confirmed that infrared thermography method could be adapted into monitor and diagnose the fault for bearing by evaluating quantitatively and qualitatively the temperature characteristics according to the condition of the ball bearing.