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- 저자 : Chih-Hsin Hsu (검색결과 6 건)
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A P2P-to-UPnP Proxy Gateway Architecture for Home Multimedia Content Distribution
( Chih-lin Hu ),( Hsin-cheng Lin ),( Yu-feng Hsu ),( Bing-jung Hsieh ) 한국인터넷정보학회 2012 KSII Transactions on Internet and Information Syst Vol.6 No.1
Deploying advanced home networking technologies and modern home-networked devices in residential environments provides a playground for new home applications and services. Because home multimedia entertainment is among the most essential home applications, this paper presents an appealing home media content sharing scenario: home-networked devices can discover neighboring devices and share local media content, as well as enormous amounts of Internet media content in a convenient and networked manner. This ideal scenario differs from traditional usages that merely offer local media content and require tedious manual operations of connection setup and file transfer among various devices. To achieve this goal, this study proposes a proxy gateway architecture for home multimedia content distribution. The proposed architecture integrates several functional mechanisms, including UPnP-based device discovery, home gateway, Internet media provision, and in-home media content delivery. This design addresses several inherent limitations of device heterogeneity and network interoperability on home and public networks, and allows diverse home-networked devices to play media content in an identical and networked manner. Prototypical implementation of the proposed proxy gateway architecture develops a proof-of-concept software, integrating a BitTorrent peer-to-peer client, a UPnP protocol stack, and a UPnP AV media server, as well as media distribution and management components on the OSGi home gateway platform. Practical demonstration shows the proposed design and scenario realization, offering users an unlimited volume of media content for home multimedia entertainment.
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Precise 5-Axis Grooving of Tire Mold Based on Surface Re-Parameterization
Chih-Hsing Chu,Chih-Hsin Hsu 한국정밀공학회 2013 International Journal of Precision Engineering and Vol. No.
Grooving of tire mold is a complex machining process. The profile of a groove must be precisely formed on the road surface while the machining deviation of the wall surface must meet its design specifications. Previous tool path planning methods driven by optimization of machining errors perform unacceptably because of those restrictions. This paper proposes a new approach for precise 5-axis grooving of tire mold. Surface re-parameterization based on the two curve parameters of a ruled surface is applied to maximize the developability of the wall surface using Particle Swarm Optimization (PSO). The machining errors produced by moving the cutter along the resultant rulings is thus reduced. Grooving of a real tire mold demonstrates the effectiveness of the proposed approach.
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Microstructure and Texture Evolution of AA 6063 During an Ex-ECAE Process
Cheng-Hsien Liu,Hsin-Chih Lin,Yu-Tung Hsu 대한금속·재료학회 2016 METALS AND MATERIALS International Vol.22 No.3
Equal channel angular extrusion (ECAE) has been studied at the lab scale for many years. However, few successful industrial applications of the ECAE process have been reported. In the present work, a process referred to as Ex-ECAE that was composed of two processes of the direct extrusion and the ECAE via route C, was developed. The Ex-ECAE process was developed to refine the microstructure of the extrudate, particular the coarse grain layer (CGL) on the surface of the extrudate. The Ex-ECAE die with a die angle of 120° contained three segments and was used in the conventional direct extrusion press. The high friction and the continuous routes of the ECAE resulted in asymmetric dead metal zones (DMZs) to be formed at the corners of the die channel. It revealed that the visible grains in the CGL were refined and became invisible due to the intense shear deformation as the CGL flowed along the boundaries of the asymmetric DMZs. The textures of the Ex-ECAE at the various segments were studied by EBSD. This study demonstrated that the ECAE process could be scaled up using the extrusion press. Success or lack of success depended on the capacity of the extrusion press and the die design.
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Neutron and X-ray scattering on the monolayer structure of a lecithin fullerene-derivative.
Jeng, U-Ser,Lin, Tsang-Lang,Shin, Kwanwoo,Lee, Hsin-Yi,Hsu, Chia-Hung,Chi, Zau-Ann,Shih, Ming Chih,Torikai, Naoya American Scientific Publishers 2007 Journal of nanoscience and nanotechnology Vol.7 No.4
<P>Using neutron reflectivity with contrast variation, X-ray reflectivity, and grazing incident small-angle X-ray scattering (GISAXS), we have characterized the in-depth and in-plane structural characteristics of the Langmuir and Langmuir-Blodgett (LB) films formed by a novel lecithin C60-derivative, FPTL, of three phospholipids jointly bonded on one single olefinic moiety of a C60 cage. Based on the neutron reflectivity measured, we have proposed a monolayer structure, with the C60 cages of FPTL lifted into the air and hydrophilic phospholipid heads immersed in water, for the FPTL Langmuir layer formed on water. On the other hand, the LB film of FPTL prepared on mica exhibits clear Kiessig fringes in the X-ray reflectivity profile, indicating a 27 angstroms monolayer film with less molecular orientation. With GISAXS, we have extracted an in-plane correlation length of about 210 A for a possible in-plane aggregation of C60 of FPTL in the LB monolayer. We have also demonstrated the highly ordered monolayer structures of a lecithin lipid, in elucidating the positive effect of the attached functional group-phospholipids on the monolayer formation of the lecithin C60-derivative.</P>
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Advanced Imaging of Nanometer-Scale Recorded Bits on Super-Resolution Near-Field Optical Disk
Pei Lin Yang,Din Ping Tsai,Cheng Wei Lin,Chih Ching Hsu,Pei Hsin Chang,Tsung Sheng Kao,Wei Chih Lin 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.47 No.1
An advanced imaging technique is demonstrated for fast, non-destructive and high resolution characterizations for nanometer-scale recorded bits on a super-resolution near-field optical disk (super-RENS). For the first time, an array of individual 100 nm recorded marks is imaged and studied by using the conductive-atomic force microscopy (C-AFM) method. Discussions also include comparisons of 300 nm, 200 nm and 100 nm recorded marks on both a super-RENS disk and a commercial DVD disk, and the image results are evidence of the high carrier-to-noise ratio (CNR) value on the super-RENS disk, even though the mark size has been shrunk to less than the diffraction limit.
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Chiao-Hua Lee,Ching Tzao,Tsun-Hou Chang,Wei-Chou Chang,Guo-Shu Huang,Chih-Kung Lin,Hsin-Chung Lin,Hsian-He Hsu 대한영상의학회 2013 Korean Journal of Radiology Vol.14 No.3
The radiologic appearance of multiple discrete pulmonary nodules in immunocompetent patients, with cryptococcal infection, has been rarely described. We describe a case of pulmonary cryptococcosis, presenting with bilaterally and randomly distributed nodules on a computed tomography, mimicking hematogeneous metastases. Positron emission tomography does not demonstrate 18F-fluorodeoxyglucose (FDG) uptake, suggesting a low probability for malignancy, which is a crucial piece of information for clinicians when making a management decision. We find the absence of FDG uptake correlates with the pathologic finding of an infectious nodule, composed of fibrosis and necrosis.
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