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Non-regenerating Onboard Processing and Its Applications
Yi, Ke-Chu,Wang, Chun-Ting,Liu, Zu-Jun 통신위성우주산업연구회 2006 Joint Conference on Satellite Communications Vol.2006 No.-
Onboard baseband processing (OBP) can play distinguish role in enhancing the robustness, increasing the capacity and simplifying the earth stations for satellite communication systems. OBP usually needs demodulating and decoding many digital modulation signals, so as to support baseband switching and multiplexing, as well as regenerating the signals to reduce the noises accumulation, but it also brings two fatal disadvantages--too high complexity and less flexibility of its channels in applications. Non-regenerating OBP, without onboard demodulation and decoding, can play similar roles as the regenerating OBP while overcome its drawbacks. However, there was a serious obstruction to obstruct it from applications, i.e., there was no effective method to transmit many waveform signals without demodulated via the downlink. Our two inventions about continuous wave time division multiplexing (CWTDM) have broken through the obstruction, and opened the way for its wide applications.
MODIFICATION OF HMM USING NEURAL PREDICTORS FOR SPEECH RECOGNITION
Li, Wei Ying,Yi, Ke Chu,Zheng, Hu 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
In this paper, a modification of Hidden Markov Model (HMM) using Neural Predictor (NP) was proposed for speech recognition. In the proposed model HMM/NP, each NP is a multilayer perception (MLP) used as a separate nonlinear predictor, and corresponds to a state in the model. Training and recognition algorithms are given based on Baum-Welch and Back-Propagation (BP) algorithms. Experiments of Chinese vowel phoneme recognition were carried out and a recognition accurcy of 96.2% was obtained. The result confirmed the effectiveness of HMM/NP for speech recognition.
( Chen-hua Liu ),( Chi-yi Chen ),( Wei-wen Su ),( Chun-jen Liu ),( Ching-chu Lo ),( Ke-jhang Huang ),( Jyh-jou Chen ),( Kuo-chih Tseng ),( Chi-yang Chang ),( Cheng-yuan Peng ),( Yu-lueng Shih ),( Chia 대한간학회 2021 Clinical and Molecular Hepatology(대한간학회지) Vol.27 No.4
Background/Aims: Real-world studies assessing the effectiveness and safety of sofosbuvir/velpatasvir (SOF/VEL) plus ribavirin (RBV) for Child-Pugh B/C hepatitis C virus (HCV)-related cirrhosis are limited. Methods: We included 107 patients with Child-Pugh B/C HCV-related cirrhosis receiving SOF/VEL plus RBV for 12 weeks in Taiwan. The sustained virologic response rates at off-treatment week 12 (SVR<sub>12</sub>) for the evaluable population (EP), modified EP, and per-protocol population (PP) were assessed. The safety profiles were reported. Results: The SVR<sub>12</sub> rates in the EP, modified EP and PP were 89.7% (95% confidence interval [CI], 82.5-94.2%), 94.1% (95% CI, 87.8-97.3%), and 100% (95% CI, 96.2-100%). Number of patients who failed to achieve SVR<sub>12</sub> were attributed to virologic failures. The SVR<sub>12</sub> rates were comparable regardless of patient characteristics. One patient discontinued treatment because of adverse events (AEs). Twenty-four patients had serious AEs and six died, but none were related to SOF/VEL or RBV. Among the 96 patients achieving SVR<sub>12</sub>, 84.4% and 64.6% had improved Child-Pugh and model for endstage liver disease (MELD) scores. Multivariate analysis revealed that a baseline MELD score ≥15 was associated with an improved MELD score of ≥3 (odds ratio, 4.13; 95% CI, 1.16-14.71; P=0.02). Patients with chronic kidney disease (CKD) stage 1 had more significant estimated glomerular filtration rate declines than patients with CKD stage 2 (-0.42 mL/min/1.73 ㎡/month; P=0.01) or stage 3 (-0.56 mL/min/1.73 ㎡/month; P<0.001). Conclusions: SOF/VEL plus RBV for 12 weeks is efficacious and well-tolerated for Child-Pugh B/C HCV-related cirrhosis. (Clin Mol Hepatol 2021;27:575-588)
Cough Inhibition Activity of Schisandra chinensis in Guinea Pigs
Shan Zhong,Li-Ping Bai,Xiao-Dong Liu,Die-Yi Cai,Lee-Fong Yau,Chu-Qin Huang,Jia-Qi Zhang,Ke-Fang Lai,Nan-Shan Zhong 한국식품영양과학회 2021 Journal of medicinal food Vol.24 No.4
Chronic cough is very common in respiratory clinics, and no effective drugs are available. Schisandra chinensis (Turcz.) Baill. (S. chinensis), an important traditional Chinese medicine, has been extensively prescribed for patients with a persistent cough. Preliminary research indicated that 95% ethanol extracts (EE) of S. chinensis showed remarkable antitussive activity in guinea pigs exposed to cigarette smoke (CS). To find out the antitussive ingredients of S. chinensis, EE was divided into four fractions according to the polarity: petroleum ether extract (PEE), ethyl acetate extract (ECE), n-butyl alcohol extract, and residue extract. The antitussive, antioxidant, and anti-inflammatory effects of the four fractions were evaluated in a guinea pig model of cough hypersensitivity induced by CS exposure. Eighteen main constituents of the two effective fractions, PEE and ECE, were identified using ultra-high-pressure liquid chromatography electronic spray ion time-of-flight mass spectrometry. The cough inhibition activities of compound 1, 3, 9, 10, 17 were evaluated on citric acid induced acute cough guinea pigs. The results showed that the antitussive activity of EE was almost all contained in PEE and ECE. The 16 major peaks in PEE were identified as 15 lignans (1–12 and 14–16) and 1 triterpene (compound 13), and 3 major peaks (1, 17, and 18) in ECE were also identified as lignans. Three doses of five compounds brought about a significant decrease in number of cough efforts (P < .01), and the cough inhibition rates were between 40.9% and 85.1%. Therefore, lignans are the antitussive ingredients of S. chinensis.
Human-Oriented Recognition for Intelligent Interactive Office Robot
Chia-Ming Wang,Shin-Huan Tseng,Pei-Wen Wu,Yuan-Han Xu,Chien-Ke Liao,Yu-Chi Lin,Yi-Shiu Chiang,Chung-Dial Lim,Ting-Sheng Chu,Li-Chen Fu 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
This paper presents our new intelligent interactive robot, which is constructed to eagerly provide multi-functional services in an office environment. In order to endow a full interactive capability of our robots for realizing so-called human-robot interaction (HRI), we propose sensor fusion based human detection and tracking system and human pose estimation to deal with a number of situations which may take place in the office environment. Not only by these perceptions, human interact with the robot also by some natural way, such as touching the interface screen and talking with the robot through microphone. Finally, the effectiveness of the proposed work is tested and validated by some of experiments.