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Computation Controllable Mode Decision and Motion Estimation for Scalable Video Coding
Liang-Wei Zheng,Gwo-Long Li,Mei-Juan Chen,Chia-Hung Yeh,Kuang-Han Tai,Jian-Sheng Wu 한국전자통신연구원 2013 ETRI Journal Vol.35 No.3
This paper proposes an efficient computation-aware mode decision and search point (SP) allocation algorithm for spatial and quality scalabilities in Scalable Video Coding. In our proposal, a linear model is derived to allocate the computation for macroblocks in enhancement layers by using the rate distortion costs of the base layer. In addition, an adaptive SP decision algorithm is proposed to decide the number of SPs for motion estimation under the constraint of the allocated computation. Experiment results demonstrate that the proposed algorithm allocates the computation resource efficiently and outperforms other works in rate distortion performance under the same computational availability constraint.
( Hang Liu ),( Linan Xie ),( Jing Wang ),( Qiannan Guo ),( Shengnan Yang ),( Pei Liang ),( Chengshu Wang ),( Min Lin ),( Yuquan Xu ),( Liwen Zhang ) 한국미생물 · 생명공학회 2017 Journal of microbiology and biotechnology Vol.27 No.3
Beauveria bassiana infects a number of pest species and is known to produce insecticidal substances, such as the nonribosomal peptides (NRPs) beauvericin and bassianolide. However, most NRPs and their biological roles in B. bassiana remain undiscovered. To identify NRPs that potentially contribute to pathogenesis, the 21 predicted NRP synthetases (NRPSs) or NRPS-like proteins of B. bassiana ARSEF 2860 were primarily ranked into three functional groups: basic metabolism (7 NRPSs), pathogenicity (12 NRPSs), and unknown function (2 NRPSs). Based on the transcript levels during in vivo growth on diamondback moth (Plutella xylostella (Linnaeus)), half of the Group II NRPSs were likely to be involved in infection. Given that the metabolites biosynthesized by these NRPSs remain to be determined, our result underlines the importance of the NRPSome in fungal pathogenesis, and will serve as a guide for future genomic mining projects to discover functionally essential and structurally diverse NRPs in fungal genomes.
Prediction of elastic constants of Timoshenko rectangular beams using the first two bending modes
Hung-Liang (Roger) Chen,Guadalupe Leon 국제구조공학회 2021 Structural Engineering and Mechanics, An Int'l Jou Vol.80 No.6
In this study, a relationship between the resonance frequency ratio and Poisson’s ratio was proposed that can be used to directly determine the elastic constants. Using this relationship, the frequency ratio between the 1st bending mode and 2nd bending mode for any rectangular Timoshenko beam can be directly estimated and used to determine the elastic constants efficiently. The exact solution of the Timoshenko beam vibration frequency equation under free-free boundary conditions was determined with an accurate shear shape factor. The highest percent difference for the frequency ratio between the theoretical values and the estimated values for all the beam dimensions studied was less than 0.02%. The proposed equations were used to obtain the elastic constants of beams with different material properties and dimensions using the first two measured transverse bending frequencies. Results show that using the equations proposed in this study, the Young’s modulus and Poisson’s ratio of rectangular Timoshenko beams can be determined more efficiently and accurately than those obtained from industry standards such as ASTM E1876-15 without the need to test the torsional vibration.
Hung-Yi Chen,Jin-Wei Liang 제어·로봇·시스템학회 2017 International Journal of Control, Automation, and Vol.15 No.3
This paper applies an intelligent control scheme to investigate a diaphragm-type pneumatic vibrationisolation (PVI) problem. Adaptive wavelet neural network (AWNN) control is employed to control the PVI systemwhich has inherited nonlinear and time-varying system characteristics. Since AWNN has excellent approximationcapability originating from wavelet decomposition property and online learning ability stemming from neural networks,the method is especially suitable for the PVI control applications. In this paper, the adaptive learning ratesare derived based on the Lyapunov stability theorem. Therefore, the stability of the closed-loop system can beassured. To validate the proposed method, a composite control scheme using pressure and velocity measurementsas feedback signals is implemented. During experimental investigations, sinusoidal excitation with the excitationfrequency close to the resonance and random-like signal are input on a floor base to simulate ground vibrations. Performances obtained from the proposed control scheme are compared with those obtained from passive isolationand PID scheme to illustrate the effectiveness of the proposed intelligent control.
Hung, Hsiu-Chi,Chien, Tsui-Wei,Tsay, Shiow-Luan,Hang, Hewi-Ming,Liang, Shu-Yuan Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.3
Objective: The aim of the current study was to evaluate changes in treatment outcomes in terms of health-related quality of life (HRQoL) and symptom burden at zero, one, three, and six months after an initial diagnosis of colorectal cancer. The demographic and clinical characteristics that account for outcome changes in patients were investigated using a repeated measures framework. Methods and Materials: A cohort study was performed of 134 colorectal cancer patients followed from diagnosis to 6 months post-treatment in Central Taiwan. HRQoL and symptoms were assessed at diagnosis and one, three, and six months thereafter. The Functional Assessment of Cancer Therapy-Colon (FACT-C) questionnaire, VAS pain, and the Memorial Symptom Assessment Scale (MSAS) were used for data collection. A generalized estimating equation (GEE) was applied for statistical analysis. Results: The majority of the patients were male (55%) and married (91.5%). The mean age was 60.4 years (SD = 11.71). Most were diagnosed stage III and IV colorectal cancer (54.5%). All underwent surgery; some also received chemotherapy (CT) or concurrent chemoradiation therapy (CCRT). The results of the GEE showed that overall, the HRQoL, pain, and symptoms of the patients significantly improved over the treatment period. Patients with stage IV disease who had received surgery and CCRT showed the worst HRQoL. Females, patients with comorbidity, and stage IV patients had higher pain scores over time. Female and stage IV patients had more severe physical symptoms, whereas stage II and IV patients had worse psychological symptoms over time. Conclusion: The patients' HRQoL, pain, and symptoms significantly improved over the 6-month treatment period. Certain patient and clinical variables accounted for changes in treatment outcomes regarding HRQoL and symptom burden in colorectal cancer patients.
Hung-Liang Chien,이영정 한국정밀공학회 2017 International Journal of Precision Engineering and Vol.18 No.10
This paper presents a new type of ball valve micro-pumps with much simplified structure design and excellent performance. The key element in this micro-pump is a pair of ball valves implemented by confining a micro-ball within a nozzle. The nozzles are axially symmetrical with a specifically designed profile and are directly fabricated using excimer laser micromachining approaches. The ball valves are integrated with a flow chamber, an electromagnetically actuated PDMS membrane, and a coil. When passing an alternative current (AC) through the coil, the flow chamber is actuated to pump fluid flowing along one direction which is controlled by the ball valves. The performance of the proposed micro-pump is evaluated using an AC voltage in the range of 2-6 V and a frequency of 10- 70 Hz. Experimental results show that a maximum flow rate of 389 μL/min and a maximum back pressure of 423 mm-H2O are achieved. It offers a low-cost, simple, and effective solution for a wide range of microfluidic pumping applications.