http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
신정훈,김준경,염민교,김진평,Shin, Jeong Hoon,Kim, Jun Kyeong,Yeom, Min Kyo,Kim, Jin Pyeong 한국재난정보학회 2021 한국재난정보학회 논문집 Vol.17 No.2
연구목적: 본 연구는 인공신경망 라이브러리 기술을 이용하여, 기상 데이터 변화 예측을 통한 한반도 가뭄 취약지역 분석을 목적으로 하였다. 연구방법: 연구지역 중 북한 지역의 다양한 기상데이터의 확보가 힘든 특수성을 고려하여 연구지역의 월별 누적강수량 데이터를 활용하였으며, 통계프로그램 R을 이용하여 인공신경망 알고리즘을 통한 기상데이터 추정을 수행하였다. 연구결과: 본 논문에서 진행한 연구 결과, 실제 데이터와 예측 데이터 간의 상관계수 값은 인공신경망 알고리즘을 활용한 결과가 회귀분석 결과보다 평균 0.043879 더 높은 것으로 확인되었다. 결론: 연구의 결과는 가뭄 대응을 위한 재난대응 기초 연구 자료로 활용 가능할 것으로 기대한다. Purpose: In this paper, using artificial neural network algorithm, the Korean Peninsula was analyzed for drought vulnerable areas by predicting weather data changes. Method: Monthly cumulative precipitation data were utilized for research areas considering the specific nature areas, and weather data prediction through artificial neural network algorithm was carried out using statistical program R. The predicted data were applied to the Standardized Precipitation Index (SPI) to analyze drought vulnerable areas in the Korean Peninsula. Result: In this paper, the correlation coefficient values between real and predicted data are found to be 0.043879 higher on average than the regression results, using artificial neural network algorithms. Conclusion: The results of the research are expected to be used as basic research materials for responding to drought.
PS 텐던 강종별 긴장력 변화에 따른 자기 이력 모니터링
유병준 ( Yu Byoung Joon ),김준경 ( Kim Jun Kyeong ),박지환 ( Park Ji Hwan ),박승희 ( Park Seung Hee ) 한국구조물진단유지관리공학회 2017 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.21 No.2
In this paper, an magnetic hysteresis monitoring result for various PS tendon is indtoduced to apply the EM sensing technique to measure the tensile force of PSC bridge. The tensile force of PS tendon is a very important factor in the performance evaluation of PSC bridges. To measure the tensile force of PS tendons, the EM sensing based NDT method was developed but the proposed method cannot be applied to various class of PS tendons. The permeability of specimen was gradually decreased according to increase of tensile force.
고혈압 환자에서 도플러 심초음파를 이용한 좌심실내 혈류 전파 속도 측정
최시완,김준경,정준용,류정곤,정진옥,강승식,성인환,전은석,김영건 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.1
Background : Early detection and prevention of cardiac dysfunction is an important goal in the management of hypertensive patients. Doppler echocardiography was used to evaluate the pattern of left ventricular diastolic filling, however, filling indices from mitral sampling are not always nfluenced by factors related to left ventricular relaxation properties. Present study was performed to evaluate the relevance of propagation velocity to patients with hypertension by using pulsed Doppler echocardiography. Method : By using pulsed Doppler echocardiography, the velocity of left ventricular flow propagation velocity was measured from the distance and time difference of flow wave alcng the long axis propagation of left ventricular inflow during early filling in hypertensive patients (n=30 ), and M-mode echocardiographic data were obtained to evaluate mitral annulus long axis movement. Results : The values of E/A ratio, deceleration time, and left ventricular mass index were 0.82 + 0.18, 211 ± 55 msec,152 ±23 gr/m^2 respectively, and those of mitral ann ulus relaxation rate and left ventricular flow propagation velocity were 6.0 ±1.1 cm/sec and 62 ±17 cm/sec respectively. Flow propagation velocity was correlated to Doppler profiles such as E/A ratio ,r=0.47), deceleration time (r= -0.63) and mitral annulus relaxation rate (r=0.87) and also to left ventricular mass index (r= -0.69). Conclusion : left ventricular propagation velocity measurement by using pulsed Doppler echocardiography could be an important noninvasive tool in studying left ventricular diastolic function in patients with hypertension.