http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
D-1,3-디옥솔란 및 L-1,3-옥사티올란 5-페닐세레닐 피리미딘 뉴크레오사이드의 합성
유정만(Jung Man Yoo),문현주(Hyun Joo Moon),정병호(Byung Ho Chung),최보길(Bo Gil Choi),홍준희(Joong Hee Hong),천문우(Moon Woo Chun) 대한약학회 1996 약학회지 Vol.40 No.1
Eight new D-1.3-dioxolanyl and L-1,3-oxathiolanyl nucleosides containing 5-phenyl- selenyl pyrimidine bases which are expected to have antiviral activity were synthesized. Condensation of D-1,3-dioxolane acetate and L-1,3-oxathiolane acetate with 5-phenylselenyl pyrimidines gave anomeric mixtures of their nucleosides which were separated by silicagel column chromatography.
항 AIDS약물 Dioxolane-T와 관련성이 있는 Dioxolane 뉴클레오사이드 합성
유정만,서희경,최보길,정병호,홍준희,천문우 대한약학회 1993 약학회지 Vol.37 No.6
Two new 6-azauracil dioxolane nucleosides which are related to Dioxolane T and expected to have anti-HIV activity were asymmetrically synthesized. The key intermediate 8 have been synthesized in ten steps from D-mannose and condensed with 6-azauracil to give 13 and 14 after desilylation, respectively.
가상현실 점포의 체험요소가 소비자의 지각된 정보의 양, 고객만족 및 재방문의도에 미치는 영향
천예림 ( Ye Rim Cheon ),최우림 ( Woo Lim Choi ),박민정 ( Min Jung Park ),유정민 ( Jung Min Yoo ) 한국의류학회 2019 한국의류학회지 Vol.43 No.5
This study examines whether experiential factors of virtual reality (VR) stores influence consumers' perceived amount of information and satisfaction, which in turn influences revisit intention. This also study examines whether the experiential factors differ as a function of an individual characteristic such as environmental responsiveness. Female consumers who had an experience in using VR technology for digital shopping participated in the online survey. The results showed that educational, escapist and aesthetic experiences have a significant impact on the perceived amount of information, and entertainment and escapist experiences have a significant impact on satisfaction. In addition, the perceived amount of information has a positive effect on customer satisfaction, which in turn has a positive effect on revisit intention. There is also a difference in the effect of experiential factors on consumer responses depending on the environmental responsiveness. This study provides theoretical suggestions for experiential marketing and presents practical implications for developing marketing strategies for digital retailers utilizing VR technology.
Flexible Payment Recommender System
천순애,안유정,박선주,조준서,James Geller 한국엔터프라이즈아키텍처학회 2011 정보기술아키텍처연구 Vol.8 No.4
When a customer owns multiple credit cards, the selection of a credit card for a purchase payment is rarely done systematically. Furthermore, the customer has no online options to pay a high cost item with multiple cards. This paper presents a flexible Payment Recommender (PR) system that helps the customer to make a decision on identifying a group of credit cards, called Virtual Card, which provides customers with the flexibility of customizing their payments by splitting a payment over multiple cards. This intelligent PR system uses a divisible card payment decision model based on fuzzy membership functions of the customer’s weighted preference parameters and suggests the best card or best combination of cards to the customer. The PR system uses the Virtual Card Manager (VCM) that modifies and extends the existing single credit card-based payment infrastructure, to support rocessing multiple card-based flexible payments. A prototype PR system was implemented, that can be installed on the customer’s PC or mobile device, to manage multiple credit cards and personal preferences, and to support making payment decisions. A user acceptability study of the proposed PR system is also reported.
시계열 데이터를 위한 적대적 생성 신경망(GAN) 이상탐지 기법에 관한 연구
이창기,천유정,황욱연 한국품질경영학회 2021 한국품질경영학회 학술대회 Vol.2021 No.-
최근 사물인터넷(IoT)과 같은 기술의 발달로 인해 시계열 데이터 속에 존재하는 이상(Anomaly)을 자동으로 탐지하는 이상탐지(Anomaly detection)에 대한 수요가 증가하고 있다. 이에 다양한 분야에 기반을 둔 이상탐지 기법들이 제안됐다. 통계적공정관리(Statistical process control) 기법인 누적합관리도(Cumulative sum chart)가 그 대표적인 예이다. 최근에는 적대적 생성 신경망(Generative adversarial networks, GAN) 방법의 성공으로 인해 GAN을 활용한 이상탐지 기법들이 많은 주목을 받고 있다. Li et al. (2018)은 GAN 기반 이상탐지 방법이 누적합관리도보다 우수한 이상탐지 성능을 나타낸다고 주장하였다. 그러나 그들의 연구는 제안된 GAN 기반 이상탐지 방법과 누적합관리도의 공정한 비교를 위한 프레임워크가 존재하지 않는다. 이에 본 연구는 다음과 같은 연구를 수행하였다. 첫째, 이상탐지 성능의 비교 프레임워크를 제시하여 GAN 기반 이상탐지 방법들과 누적합관리도의 이상탐지 성능을 비교하였다. 그 결과 누적합관리도가 GAN 기반 이상탐지 방법들의 성능보다 우수하게 나타났다. 이는 선행연구(Li et al., 2018)와는 상반된 결과로 비교 절차에 따라 이상탐지 성능이 달라질 수 있기에 더 많은 후속 연구가 더 필요함을 의미한다. 둘째, 기존 GAN 기반 이상탐지 기법들의 성능 향상을 위한 연구를 수행하였다. 그 결과 역전파(Backpropagation) 단계의 수가 이상탐지 성능에 영향을 미치는 요인임을 밝혀내었다. 역전파 단계의 수는 이상점수를 얻는 과정인 역-사상(Inverse mapping) 절차의 반복회수를 의미한다. 마지막으로 시계열 효과를 제거한 잔차(Residual)를 모니터링하면 이상탐지 성능이 향상됨을 확인하였다.
제4, 5 요추 골절에 동반된 광범위 척수경막 결손의 치험 : 1례 보고 A Case Report
정영기,유정한,이응천 대한척추외과학회 1994 대한척추외과학회지 Vol.1 No.1
Adequate pain drawings obtained from 119 patients who were surgically treated for a low back disorder during 1992 were analysed to evalutae the possibility of using the pain drawings in the initial diagnosis at first visit, in the assessment of psycho- logical status of patients, and in the prediction of the treatments results. An initial diagnostic impression was made at a glance over the pain drawing into five cate- gories and the results were compared with the final diagnosis after surgery. The penalty score of pain drawings evaluated by Ransford's scoring system were com- pared with the MMPI scores of 14 patients and with the treatment results of 79 patients who were followed more than one year after surgery. The initial impressions were five benign back pains, 53 disc herniations, 44 spinal stenosis, eight significant underlying discoders, and nine psychogenic back pain. The final diagnosis were 59 disc herniatinos, 42 spinal stenosis, and 18 significant under- lying disorders. Concerning the disc herniation, spinal stenosis, and significant underlying disorder there were statistically significant relationship between the intial impression and the final diagnosis. 84 pain drawings were evaluated as low penalty scores of two or less and 35 pain drawings as high penalty scores of three to 12. MMPI scores evaluated for 12 patients with high penalty score revealed more than 70 of hypochondriasis or hysteria scores in nine patients, but in all patients with low penalty scores revealed normal MMPI. A satisfactory clinical results of treatments without sinificant pain or disability was obtained in 53(96.4%) of 55 patients with low penalty scores and 18(75%) of 24 patients with high penalty scores. In conclusions a pain drawing was considered to be useful for the initial diagnostic screening, for the psychological assessment of patients, and for the prediction of treatment results.