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- 저자 : Fong-Ching Yuan (검색결과 2 건)
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Hybrid Algorithm for Selecting Multimedia Network Connections in Heterogeneous Networks
Tein-Yaw Chung,Ibrahim Mashal,Fong-Ching Yuan,Yuan-Hao Chiang,Osama Alsaryrah 한국산학기술학회 2015 SmartCR Vol.5 No.6
The heterogeneity of mobile and wireless networks exposes mobile users to different access network technologies. In the past, many paradigms have been introduced, such as Always Best Connected (ABC) and Always Best Network Connection (ABNC), to meet user’s preferences. However, they fail to consider multimedia services consisting of video and data, besides voice, for both source and destination. This paper presents a new model called Always Best Multiple Network Connection (ABMNC) to support multimedia services. ABMNC is first formulated as a Multiple Attribute Decision Making (MADM) problem with an embedded utility-based Multiple Knapsack Problem (MKP). In order to reduce computation complexity, the MADM hierarchy of ABMNC is decomposed into a number of iterated sub-MADM hierarchies, and a hybrid Analytic Hierarchy Process (AHP) and a Simple Additive Weighting (SAW) scheme are used to solve them. A novel Heuristic Rate Allocation Algorithm (HRAA) is then presented to reduce the computation complexity of the assignment and rate allocation. Moreover, a comprehensive Heuristic Path Selection Algorithm (HPSA) is proposed to efficiently resolve the ABMNC hierarchy. Finally, computer simulation is performed to study ABMNC, and the results show that our approach, most of the time, chooses the optimal network connections.
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Cheng-Liang Huang,Hung Ji Huang,Sy-Hann Chen,Yu-Siang Huang,Po-Ching Kao,Yuan-Fong Chou Chau,Hai-Pang Chiang 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.103 No.-
This study used photochemical reduction to successfully synthesize triangular silver nanoplates (TAgNPs)and silver nanodecahedrons (AgNDs) with higher light-absorption and higher light-scattering properties,respectively, for the same wavelength. To analyze the contribution of light-absorption and lightscatteringof silver nanoparticles to the localized surface plasmon resonance (LSPR) effect, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate was doped with TAgNPs or AgNDs at the same concentration(1.17 lg/cm2) and made into polymer light-emitting diodes (PLEDs). According to the current densityvoltageluminancecharacteristics and electroluminescence (EL) spectra, the enhancement factors for currentefficiency and EL intensity for AgND-containing PLEDs were found to be higher than those for PLEDwith TAgNPs by 24.9% and 138%, respectively. This shows that the metal nanoparticles with higher lightscatteringproperty can induce a relatively strong LSPR effect, which possibly gives a hint to design plasmonicphotovoltaic in future.
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