http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
Observation of the Nernst effect in a GeTe/NiFe structure
Ahn Jeong Ung,Jeon Jeehoon,Cho Seong Won,Lee OukJae,Lee Suyoun,Koo Hyun Cheol 한국물리학회 2023 Current Applied Physics Vol.49 No.-
On the basis of second-harmonic measurements, we separated the thermal effect from the spin–orbit torque in GeTe/NiFe bilayers. The damping-like torque and thermal effect terms are phenomenologically inseparable in the second-harmonic resistance. Several thermomagnetic effects, such as the Nernst effect and spin Seebeck effect, are also mixed in the second-harmonic signals. By exploiting the different external magnetic field dependence of these terms, we extracted the noticeable thermal-related terms. In particular, the ordinary Nernst effect is dominant over other thermal effects such as the anomalous Nernst effect and the spin Seebeck effect in a GeTe/NiFe structure. Furthermore, we have investigated the dependence of the ordinary Nernst effect on the temperature and the electric field applied to GeTe channel. These findings reveal that, in a bulk Rashba device, the thermal effect must be considered when attempting to control the spin–orbit-torque-induced switching.
Interleaved FEC 방식 기반 IPTV 화질 개선에 관한 연구
김수연(Suyoun Kim),강영석(Youngseok Kang),안소진(Sojin Ahn),최진영(Jin-Young Choi) 한국정보과학회 2011 한국정보과학회 학술발표논문집 Vol.38 No.2D
IPTV (Internet Protocol TV) 서비스는 현재 단 방향 채널을 사용하는 멀티캐스트 방식을 이용하므로 방송사업자의 스트림 서버와 사용자의 셋탑박스 사이의 망에서 발생하는 네트워크 에러는 방송 품질을 저하시킨다. 본 논문은 이에 대한 대책으로 FEC (Forward Error Correction) 기법을 상용 셋탑박스에 적용시켰고 특히 IPTV 서비스에서 발생하는 연속적인 네트워크 에러 복구에 적합한 Interleaved FEC 기법과 비교하여 그에 따른 화질 개선 효과에 대해 연구하였다.
정상인과 녹내장 환자에서 수술 전 안구 계측치와 백내장 수술 후 안압 하강과의 관계
박수연,이마빈,안재홍,Suyoun Park,Marvin Lee,Jaehong Ahn 대한안과학회 2012 대한안과학회지 Vol.53 No.1
Purpose: To investigate the relationships between preoperative factors and intraocular pressure (IOP) reduction after phacoemulsification in normal, open-angle glaucoma (OAG) and angle-closure glaucoma (ACG) patients. Methods: IOP was measured before and 3 months after cataract surgery in 30 normal, 24 OAG and 31 ACG patients. The relationship between IOP reduction after cataract surgery and preoperative parameters including anterior chamber depth (ACD), axial length (AL), preoperative IOP/ACD ratio (PD ratio), preoperative IOP/AL ratio (PL ratio) were investigated in the 3 groups. Results: Significant IOP reduction was observed in all 3 groups after surgery (paired sample t-test; p < 0.05), and IOP reduction was correlated with preoperative IOP level in all 3 groups (Pearson’s correlation; p < 0.05). Other preoperative parameters such as ACD and AL were not correlated with IOP reduction, and PD ratio was significantly correlated with IOP reduction only in the OAG group (Pearson’s correlation; p < 0.001). PL ratio was significantly correlated with IOP reduction in all 3 groups (Pearson’s correlation; p < 0.05) and showed the best sensitivity and specificity to predict significant reduction in IOP after cataract surgery among parameters including preoperative IOP, PD ratio and PL ratio. Conclusions: PL ratio was significantly correlated with IOP reduction after cataract surgery in all 3 groups and showed a higher predictive value for IOP reduction in the OAG group than in the other groups. J Korean Ophthalmol Soc 2012;53(1):111-119
최혜영,안수연,장혜진,정수진,백승경,이상기,이용문,Choi, Hyeyoung,Ahn, Suyoun,Chang, Hyejin,Chung, Sujin,Baeck, Seungkyung,Lee, Sangki,Lee, Yongmoon 대한약학회 2015 약학회지 Vol.59 No.5
This paper includes a review of 555 drug-facilitated sexual assault (DFSA) cases analyzed at the National Forensic Service (NFS), South Korea, between 2006 and 2012. The results of toxicological analyses of blood and urine samples were also reported, and furthermore the results were interpreted with respect to the number of drugs detected. The number of DFSA cases was highest during warmer summer months and the mean age of the victims was 25 years, with 48% being between 20 and 29 years. Accommodations or entertainment places were the most frequent place of the sexual assault (57%); and the assailant was a stranger in 72% of the DFSA cases. Drugs were identified in the blood or urine samples in 145 cases (26%) and sedative-hypnotics, such as benzodiazepines and zolpidem, were the most commonly detected, along with sedative antihistamines such as doxylamine and diphenhydramine. The frequent presence of sedative drugs in biological samples tends to implicate their use in chemical submission. However, interpreting the analytical results in terms of voluntary vs. surreptitious administration of drugs requires further detailed investigation and knowledge of the victim's health status and medication used at the time of event.