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Spectrum Sensing with Combining Spectral Correlation Density for ATSC Signal Detection
유도식, 임종태, Yoo. Do-Sik, Lim. Jongtae 한국항행학회 한국항행학회논문지 8 Pages
한국항행학회 한국항행학회논문지 2013, Vol.17 No.3 298-305 (8 pages)
spectral correlation density, SCD)를 이용하여 ATSC 디지털 텔레비전 신호를 검출하기 위한 SCD 결합을 이용하는 스펙트럼 센싱 기법을 제시한다. ATSC 텔레비전 파일럿 신호의 사이클로스테이셔너리 성질을 이용하는 검출 기법은 주로 특정 위치의 주파수의 SCD 값을 이용한다. 하지만, 다중 경로 페이딩 환경에서 SCD의 값이 여러 주파수에 걸쳐서 분포되어 있음을 확인할 수 있다. 파일럿 근처에서 분포하는 일련의 SCD값을 이용하기 위해 최대율 결합 (maximal ratio combining), 자승 결합 (square law combining), 균일 이득 결합... -
A Spectral Correlation Based Detection Method for Spectrum Sensing in Cognitive Radio
한저, 송정익, 손성환, 김재명, Han. Ning, Song. Jeong-Ig, Sohn. Sung-Hwan, Kim. Jae-Moung 한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 8 Pages
한국통신학회 한국통신학회논문지. The Journal of Korea Information and Communications Society. 통신이론 및 시스템 2006, Vol.31 672-679 (8 pages)
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Correlation between caudal pulmonary artery diameter to body surface area ratio and echocardiography-estimated systolic pulmonary arterial pressure in dogs
Youngjae Lee, Wooshin Choi, Donghoon Lee, Jinhwa Chang, Ji-Houn Kang, Jihye Choi, Dongwoo Chang 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 2호 14 243-251 (9 pages)
Caudal pulmonary artery diameter (CPAD) to body surface area (BSA) ratios were measured in ventrodorsal thoracic radiographs to assess the correlation between CPAD to BSA ratios and systolic pulmonary arterial pressure (PAP) in dogs. Thoracic radiographs of 44 dogs with systolic pulmonary arterial hypertension (PAH) and 55 normal dogs were evaluated. Systolic PAP was estimated by Doppler echocardiography. CPADs were measured at their largest point at the level of tracheal bifurcation on... -
The Effects of Tramadol on Electroencephalographic Spectral Parameters and Analgesia in Rats
Hwan-SooJang, Il-SungJang, Maan-GeeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.3 12 191-198 (8 pages)
The effects of different doses of tramadol on analgesia and electroencephalographic (EEG) spectral parameters were compared in rats. Saline or tramadol 5, 10, 20 or 40 mg/kg was administered. The degree of analgesia was evaluated by tail-flick latency, and the degree of seizure was measured using numerical seizure score (NSS). Additionally, band powers, median power frequency and spectral edge frequency 95 were measured to quantify the EEG response. All doses of tramadol produced spike-wave... -
Spectral Analysis of Heart Rate Variability during Passive Standing after Ethanol Ingestion
HyeongJinKim, ChunDukHan, EunKyoungYang, WonJungLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.6 9 605-613 (9 pages)
spectral analysis of heart rate variability (HRV) in flushed and nonflushed subjects. Of 24 young male subjects, 8 belonged to flushed group (F) and 16 to nonflushed group (NF). Two sessions of 10-min PS were performed before and after ethanol (0.5 g/kg) ingestion. Powers of R-R interval variability in very low frequency (VLF, 0∼0.05 Hz), low frequency (LF, 0.05∼0.15 Hz) and high frequency (HF, 0.15∼0.50 Hz) bands, normalized powers (LFn and HFn) and LF/HF ratio were obtained. After ethanol... -
Electroencephalographic Correlation Dimension Changes with Depth of Halothane
MaanGeeLee, EunJuPark, JungMeeChoi, MoonHanYoon 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.5 5 491-499 (9 pages)
parameter. MPF had a better correlation with the movement than 90% spectral edge frequency. Among the dynamic parameters, D2 on the parietal cortex had a better correlation with the movement. The level of deviation and variation of standardized D2, MPF, and betaL were significant (p＜0.01). The order of deviation and variation was; betaL power＞MPF＞D2. The correlation dimension serves as a better index for the depth of halothane anesthesia defined in forms of a response to external stimulation. -
Spectral Analysis of Heart Rate Variability during Treadmill Exercise at Various Speeds and Grades
Kim, Hyeong-Jin, Kim, Ki-Hong, Ahn, Dong-Kuk, Park, Jae-Sik 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1996, 제 30권 제 1호 5 43-52 (10 pages)
This study was aimed to elucidate the changes in heart rate variability during treadmill exercise at various speeds and grades by spectral analysis. Thirty-three untrained male college students aged 20 ~ 26 yr were employed to exercise on a treadmill using 4 speeds (4.02, 5.47, 6.76 and 8.05 km/h) and 6 grades (0, 4, 8, 12, 16 and 20%). A fixed speed was selected for each session with the grade increased every 3 min. The electrocardiogram, respiration and the stepping activity were continuously...
