Effects of Mold Growth on Building Materials by Different Environments in Taiwan

An Cheng,Yu Hsin,Wei-Ting Lin 대한토목학회 2014 KSCE Journal of Civil Engineering Vol.18 No.4

The main of study is to investigate the effect of moisture variation and micro-structure on the growth mold at surface of buildingmaterials. The two different water-cement ratio of mortars (w/c = 0.4, 0.6), brick and tiles were used in this study. The mercuryIntrusion Porosity-Meter (MIP) was used to determine the pore distribution of building materials. The moisture variation of materialswas recorded in constant climate chamber (25oC, relative humidity 80%), general indoor environment (28oC, relative humidity 55%)and water damage simulation environment. The results indicated that the pore size and distribution will affect the surface water ratioand moisture content of materials. The surface water ratio of specimen was affected by different environment seriously. The surfacewater ratio was an important factor in mold growth.

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.

Construction of the Operating Limits Diagram for a Ship-Based Helicopter Using the Design of Experiments with Computational Intelligence Techniques

Lin Hsin-Hung,Wu Sheng-Ju,Liu Tsung-Lung,Pan Kuan-Cheng 한국항공우주학회 2021 International Journal of Aeronautical and Space Sc Vol.22 No.1

Compared with land-based helicopters, ship-based helicopters are required to land in a more challenging working environment as the airwakes generated by the wind field flowing through the superstructure of the ship changes the wind field structure. This complicates the wind field structure and affects the safety of flight control. The flight safety of the helicopter pilot can be significantly improved with prior understanding of the relevant information in the ship-based helicopter operating limits (SHOL) diagram. In previous studies, the SHOL diagram of ship-based helicopters has been obtained using numerical simulations in conjunction with a flight simulator. However, the flight simulator equipment is expensive and difficult to maintain. This study references the aforementioned studies by initially employing a numerical simulation method to obtain the flow field information of the interaction between the airwakes of the ship’s superstructure and the downwash flow of the helicopter. Then, the flight simulator is replaced by computational intelligence methods involving artificial intelligence. This significantly reduces the research cost for envelope construction. This study integrates design of experiments (DOE) and computational intelligence techniques (soft computing) to establish a recommended range for the SHOL diagram of ship-based helicopters. This study utilizes the DOE and computational intelligence techniques to construct the SHOL diagram of ship-based helicopters, provide suggestions, and serve as a reference for helicopter pilots and engineering designers to improve the safety during flight.

Sustainable Urban Regeneration in Taiwanese Old Urban Districts: From a User's Perspective

Cheng, Hsien-Hsin,Lin, Chao-Chih Sustainable Building Research Center 2010 International journal of sustainable building tech Vol.1 No.1

The researchers intend to approach urban regeneration issues in old urban districts from a user's perspective. Instead of experts' evaluation and professional disciplines, this research relies on the users' perceptions about the factors of the built environment on a liveable urban district. The case study areas are two historic districts in Tainan city - Chihkan district and Minsheng greenpark district. In order to measure the users' attitudes about regeneration issues, the researchers use Likert scale in questionnaire for users to fill in the right scale of their perception. The users to be surveyed can classify into two groups: 1) inhabitants in a district, 2) tourists in a district. As for inhabitants, questionnaire mainly concerns the liveability issues of an old district, for instance, the impact of high density on life quality, or satisfaction about local traffic; whilst for tourists, questionnaire concentrates on cultural tourism issues, for instance, the attractiveness of gourmet, cultural heritage or the degree of importance they feel about the retailing stores, and department stores in old districts etc. After collecting the questionnaires from both two groups, multivariate analysis is used in coding. By factor analysis, the key constructs concerning a liveable district can be concluded with priority order, for instance, cultural heritage as the most important construct, a neighbourhood for all social hierarchy as the second important construct, and a convenient neighbourhood as the third important construct and others. By descriptive statistics, the tourists' attitudes about historic districts can also be summarized, for instance, which element is more appealing to most tourists, or how important do most tourists feel about reused old buildings etc. Research results can be used to build regeneration strategies fit to the need of districts.

Improving discharge uniformity of industrial-scale very high frequency plasma sources by launching a traveling wave

Hsin-Liang Chen,Yen-Cheng Tu,Cheng-Chang Hsieh,Deng-Lain Lin,Chin-Jung Chang,Keh-Chyang Leou 한국물리학회 2016 Current Applied Physics Vol.16 No.7

Very high frequency (VHF) PECVD has been demonstrated to be able to significantly increase the deposition rate without compromising the film quality for the manufacture of silicon heterojunction and silicon thin film solar cells. To further reduce the production costs by enhancing the throughput, larger electrode and higher frequency are often required at the same time. Nevertheless, raising frequency in large-area PECVD results in non-uniform discharge caused by the standing wave effect and deteriorates the processing uniformity. In this study, a technique that generates a traveling wave via superposing two specific standing waves launched simultaneously is proposed to resolve this issue. An industrial-scale linear plasma reactor with length and width of 125 and 10 cm, respectively, is adopted for experimental tests and two 80 MHz power supplies are utilized to separately control the standing waves. The experimental results show that the discharge gap is only partially covered by plasma discharge when only one standing wave is applied. However, as both standing waves are launched, the non-uniformity of plasma discharge can be effectively reduced to <±5%. In addition, numerical simulation is also conducted in this study to clarify whether the proposed technique can be applied to large-area rectangular PECVD (substrate size: 1.4 m 1.1 m). By arranging multiple feeding points on opposite sides of the powered electrode, the simulation results indicate the non-uniformity of electric field can be maintained within ±10%.

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.

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.

Development of RAPD-PCR assay for identifying Holstein, Angus, and Taiwan Yellow Cattle for meat adulteration detection

Chin-Cheng Lin,Pin-Chi Tang,Hsin-I Chiang 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.6

Incidents of food fraud have occurred worldwide,particularly in the form of meat adulteration. In thisstudy, molecular probes were developed using the Randomamplification of polymorphic DNA (RAPD) polymerasechain reaction (PCR) technique in order to identify threebeef subspecies–Holstein, Angus, and Taiwan YellowCattle. Four RAPD-PCR 10-nucleotide primers were chosenout of a total of 60 primers. The selection was based onthe reproducibility of species-specific amplicons able todetect various origins of cattle breeds. The resultsdemonstrated that primer OPK12 produced three uniqueamplicons (1100 bp, 1000 bp and 480 bp) in Holstein;primer OPK14 generated one amplicon that only appearedin Holstein and Angus (200 bp); primer OPK19 amplifiedtwo species-specific amplicons in Holstein measuring550 bp and 650 bp, respectively. However, due to therelatively lower repeatability of RAPD-PCR, higher andmore specific testing repeats were required to increase theaccuracy of the conclusion.

A Study on Taiwan’s Food Dollar Series An Inclusive Growth Perspective

YANG Hsin-Ju,LIN Hsing-Chun,CHANG Ching-Cheng,HSU Shih-Hsun 한국무역학회 2017 한국무역학회 국제학술대회 Vol.2017 No.11

Fibrous dysplasia in maxilla in a patient on hemodialysis with severe secondary hyperparathyroidism

Hui-Hsin Yang,Cheng-Hsien Wu,Hsin-Lin Tsai,Jei-Wen Chang 대한내과학회 2022 The Korean Journal of Internal Medicine Vol.37 No.3

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