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- 저자 : Chao-Ping Chen (검색결과 42 건)
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Study on Effect of Massage Technique based on Chaos Theory
Ping Feng,Xiao-li Wang,Chao Zhang,Wei Sun,Dai-min Chen 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.12
According to the mechanism of EMG signal, we know that the sacrificial electrical signal is with weak signal, low frequency, alternating, nonlinear and non-stationary characteristics. Nonlinear analysis includes higher order spectral analysis and fractal and chaos analysis.Chaos theory is one of the main parts of nonlinear science, and the electrical signal of the surface has a strong randomness, so we could consider the nonlinear analysis of EMG signals from the perspective of chaos. We mainly studied on the nonlinear analysis algorithm of EMG signal detailedly in this paper. Experiments show that,according to the quantitative analysis of several important parameters of rolling massage with chaos theory, we can measure objectively the action situation of related muscle groups in the operation course, then guide the professional massage students to understand the norms of operation in training of operation and help to lead their manipulation to the best power structure.
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Double-layer Fabry-P$\acute{e}$rot filter interferometric modulator display
Chen, Chao Ping,Xiong, Yuan,Yang, Yuxing,Li, Xiao,Li, Hongjing,He, Gufeng,Lu, Jiangang,Su, Yikai 한국정보디스플레이학회 2013 Journal of information display Vol.14 No.4
Presented is an interferometric modulator display characterized by double layers of liquid crystal (LC) Fabry-P$\acute{e}$rot filters. With this design, no polarizers and color filters are needed, and both the color and amplitude can be tuned by electrically controlling the LC's birefringence. Instead of the conventional RGB trisubpixel color scheme, a bisubpixel structure is proposed to render a super-wide color gamut. Through simulations, the device performance was numerically studied. The device was proven to be quite suitable for green-display application.
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Double-layer Fabry–Pérot filter interferometric modulator display
Chao Ping Chen,Yuan Xiong,Yuxing Yang,Xiao Li,Hongjing Li,Gufeng He,Jiangang Lu,Yikai Su 한국정보디스플레이학회 2013 Journal of information display Vol.14 No.4
Presented is an interferometric modulator display characterized by double layers of liquid crystal (LC) Fabry–Pérot filters. With this design, no polarizers and color filters are needed, and both the color and amplitude can be tuned by electrically controlling the LC’s birefringence. Instead of the conventional RGB trisubpixel color scheme, a bisubpixel structure is proposed to render a super-wide color gamut. Through simulations, the device performance was numerically studied. The device was proven to be quite suitable for green-display application.
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CHAO-PING CHEN,Li,Xu,LI LI,YAN-QIN XU 장전수학회 2010 Proceedings of the Jangjeon mathematical society Vol.13 No.3
The Ioachimescu's constant I = 0.539645.... is defined as the limit of the sequence In = [수식] (n ∈ N). In this paper, we establish the asymptotic representation of the sequence (In)n∈N, and obtain the upper and lower bounds for In- and I.
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Solutions of several open problems
Chao-Ping Chen,Ji-En Deng 장전수학회 2012 Advanced Studies in Contemporary Mathematics Vol.22 No.4
The main object of this paper is to solve several open problems proposed by Zhang and X_u, Bencze, and Simic. (i) We prove that for x > 0, [수식].
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INEQUALITIES AND COMPLETE MONOTONICITY FOR THE GAMMA AND RELATED FUNCTIONS
Chen, Chao-Ping,Choi, Junesang Korean Mathematical Society 2019 대한수학회논문집 Vol.34 No.4
It is well-known that if ${\phi}^{{\prime}{\prime}}$ > 0 for all x, ${\phi}(0)=0$, and ${\phi}/x$ is interpreted as ${\phi}^{\prime}(0)$ for x = 0, then ${\phi}/x$ increases for all x. This has been extended in [Complete monotonicity and logarithmically complete monotonicity properties for the gamma and psi functions, J. Math. Anal. Appl. 336 (2007), 812-822]. In this paper, we extend the above result to the very general cases, and then use it to prove some (logarithmically) completely monotonic functions related to the gamma function. We also establish some inequalities for the gamma function and generalize some known results.
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Monoview/dual-view switchable liquid crystal display.
Chen, Chao Ping,Lee, Joong Ha,Yoon, Tae-Hoon,Kim, Jae Chang Optical Society of America 2009 Optics letters Vol.34 No.14
<P>We present an optical device capable of displaying in two distinct viewing modes, i.e., monoview and dual-view modes. The monoview mode has a joint viewing cone and allows only the same image or video content to be displayed. The dual-view mode splits one viewing cone into two so that two different pieces of information can be displayed simultaneously in the left and the right viewing directions from the screen. Each viewing mode can be mutually switched through the modulation of the birefringence of liquid crystals. This proposed device has technical advantages of easy operation, low cost, and versatility of applications.</P>
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Chao-Jen Wang,Wei-Fan Kuan,Hui-Ping Lin,Yury A. Shchipunov,Li-Jen Chen 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.96 No.-
In this study, an eco-friendly fabrication process for the hydrophilic polydimethylsiloxane (PDMS)-basedsponge was proposed with the assistance of sugar templates and poly(dimethylsiloxane-b-ethyleneoxide) (PDMS-b-PEO) block copolymer additives. The effects of sugar loadings and sugar particle sizes onsponge structure and separation performance were investigated. Manipulating sugar loadings exhibiteda unique control over the porosity of sponge, which further influenced the absorption capacity and oil–water separation speed. Additionally, the surface modification of PDMS sponge from hydrophobic/oleophilic to hydrophilic/underwater oleophobic was achieved by incorporating PDMS-b-PEO. Suchmodified sponge demonstrated an underwater oil contact angle of 154 and a stable separation efficiencygreater than 99.9% in the gravity-driven cycledfiltration tests. The hydrophilic PDMS-b-PEO modifiedsponges highlighted herein reveal a promising potential for novel separation materials with energyefficientand cost-effective features, which are ideal for oil spill clean-up events and wastewatertreatment application.
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