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Cheng</title> <meta name="description" content="Search results for: Xian Cheng"> <meta name="keywords" content="Xian Cheng"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Xian Cheng" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" title="Disciplines">Disciplines</a> </li> <li 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Xian Cheng"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 504</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Xian Cheng</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">504</span> Changes in Skin Microbiome Diversity According to the Age of Xian Women</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hanbyul%20Kim">Hanbyul Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hye-Jin%20Kin"> Hye-Jin Kin</a>, <a href="https://publications.waset.org/abstracts/search?q=Taehun%20Park"> Taehun Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Woo%20Jun%20Sul"> Woo Jun Sul</a>, <a href="https://publications.waset.org/abstracts/search?q=Susun%20An"> Susun An</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Skin is the largest organ of the human body and can provide the diverse habitat for various microorganisms. The ecology of the skin surface selects distinctive sets of microorganisms and is influenced by both endogenous intrinsic factors and exogenous environmental factors. The diversity of the bacterial community in the skin also depends on multiple host factors: gender, age, health status, location. Among them, age-related changes in skin structure and function are attributable to combinations of endogenous intrinsic factors and exogenous environmental factors. Skin aging is characterized by a decrease in sweat, sebum and the immune functions thus resulting in significant alterations in skin surface physiology including pH, lipid composition, and sebum secretion. The present study gives a comprehensive clue on the variation of skin microbiota and the correlations between ages by analyzing and comparing the metagenome of skin microbiome using Next Generation Sequencing method. Skin bacterial diversity and composition were characterized and compared between two different age groups: younger (20 – 30y) and older (60 - 70y) Xian, Chinese women. A total of 73 healthy women meet two conditions: (I) living in Xian, China; (II) maintaining healthy skin status during the period of this study. Based on Ribosomal Database Project (RDP) database, skin samples of 73 participants were enclosed with ten most abundant genera: Chryseobacterium, Propionibacterium, Enhydrobacter, Staphylococcus and so on. Although these genera are the most predominant genus overall, each genus showed different proportion in each group. The most dominant genus, Chryseobacterium was more present relatively in Young group than in an old group. Similarly, Propionibacterium and Enhydrobacter occupied a higher proportion of skin bacterial composition of the young group. Staphylococcus, in contrast, inhabited more in the old group. The beta diversity that represents the ratio between regional and local species diversity showed significantly different between two age groups. Likewise, The Principal Coordinate Analysis (PCoA) values representing each phylogenetic distance in the two-dimensional framework using the OTU (Operational taxonomic unit) values of the samples also showed differences between the two groups. Thus, our data suggested that the composition and diversification of skin microbiomes in adult women were largely affected by chronological and physiological skin aging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=next%20generation%20sequencing" title="next generation sequencing">next generation sequencing</a>, <a href="https://publications.waset.org/abstracts/search?q=age" title=" age"> age</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian" title=" Xian"> Xian</a>, <a href="https://publications.waset.org/abstracts/search?q=skin%20microbiome" title=" skin microbiome"> skin microbiome</a> </p> <a href="https://publications.waset.org/abstracts/98314/changes-in-skin-microbiome-diversity-according-to-the-age-of-xian-women" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98314.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">155</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">503</span> Development of 35kV SF6 Phase-Control Circuit Breaker Equipped with EFDA</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Duanlei%20Yuan">Duanlei Yuan</a>, <a href="https://publications.waset.org/abstracts/search?q=Guangchao%20Yan"> Guangchao Yan</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhanqing%20Chen"> Zhanqing Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian%20Cheng"> Xian Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper mainly focuses on the problem that high voltage circuit breaker’s closing and opening operation at random phase brings harmful electromagnetic transient effects on the power system. To repress the negative transient effects, a 35 kV SF6 phase-control circuit breaker equipped with electromagnetic force driving actuator is designed in this paper. Based on the constructed mathematical and structural models, the static magnetic field distribution and dynamic properties of the under loading actuator are simulated. The prototype of 35 kV SF6 phase-control circuit breaker is developed based on theories analysis and simulation. Tests are carried on to verify the operating reliability of the prototype. The developed circuit breaker can control its operating speed intelligently and switches with phase selection. Results of the tests and simulation prove that the phase-control circuit breaker is feasible for industrial applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=phase-control" title="phase-control">phase-control</a>, <a href="https://publications.waset.org/abstracts/search?q=circuit%20breaker" title=" circuit breaker"> circuit breaker</a>, <a href="https://publications.waset.org/abstracts/search?q=electromagnetic%20force%20driving%20actuator" title=" electromagnetic force driving actuator"> electromagnetic force driving actuator</a>, <a href="https://publications.waset.org/abstracts/search?q=tests%20and%20simulation" title=" tests and simulation"> tests and simulation</a> </p> <a href="https://publications.waset.org/abstracts/38008/development-of-35kv-sf6-phase-control-circuit-breaker-equipped-with-efda" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38008.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">396</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">502</span> The Intersection/Union Region Computation for Drosophila Brain Images Using Encoding Schemes Based on Multi-Core CPUs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ming-Yang%20Guo">Ming-Yang Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Xian%20Wu"> Cheng-Xian Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Xiang%20Chen"> Wei-Xiang Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Chun-Yuan%20Lin"> Chun-Yuan Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yen-Jen%20Lin"> Yen-Jen Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ann-Shyn%20Chiang"> Ann-Shyn Chiang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With more and more Drosophila Driver and Neuron images, it is an important work to find the similarity relationships among them as the functional inference. There is a general problem that how to find a Drosophila Driver image, which can cover a set of Drosophila Driver/Neuron images. In order to solve this problem, the intersection/union region for a set of images should be computed at first, then a comparison work is used to calculate the similarities between the region and other images. In this paper, three encoding schemes, namely Integer, Boolean, Decimal, are proposed to encode each image as a one-dimensional structure. Then, the intersection/union region from these images can be computed by using the compare operations, Boolean operators and lookup table method. Finally, the comparison work is done as the union region computation, and the similarity score can be calculated by the definition of Tanimoto coefficient. The above methods for the region computation are also implemented in the multi-core CPUs environment with the OpenMP. From the experimental results, in the encoding phase, the performance by the Boolean scheme is the best than that by others; in the region computation phase, the performance by Decimal is the best when the number of images is large. The speedup ratio can achieve 12 based on 16 CPUs. This work was supported by the Ministry of Science and Technology under the grant MOST 106-2221-E-182-070. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Drosophila%20driver%20image" title="Drosophila driver image">Drosophila driver image</a>, <a href="https://publications.waset.org/abstracts/search?q=Drosophila%20neuron%20images" title=" Drosophila neuron images"> Drosophila neuron images</a>, <a href="https://publications.waset.org/abstracts/search?q=intersection%2Funion%20computation" title=" intersection/union computation"> intersection/union computation</a>, <a href="https://publications.waset.org/abstracts/search?q=parallel%20processing" title=" parallel processing"> parallel processing</a>, <a href="https://publications.waset.org/abstracts/search?q=OpenMP" title=" OpenMP"> OpenMP</a> </p> <a href="https://publications.waset.org/abstracts/89335/the-intersectionunion-region-computation-for-drosophila-brain-images-using-encoding-schemes-based-on-multi-core-cpus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89335.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">239</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">501</span> A Study on Marble-Slag Based Geopolymer Green Concrete</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zong-Xian%20Qiu">Zong-Xian Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ta-Wui%20Cheng"> Ta-Wui Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Hao%20Lee"> Wei-Hao Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Yung-Chin%20Ding"> Yung-Chin Ding</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The greenhouse effect is an important issue since it has been responsible for global warming. Carbon dioxide plays an important part of role in the greenhouse effect. Therefore, human has the responsibility for reducing CO₂ emissions in their daily operations. Except iron making and power plants, another major CO₂ production industry is cement industry. According to the statistics by EPA of Taiwan, production 1 ton of Portland cement will produce 520.29 kg of CO₂. There are over 7.8 million tons of CO₂ produced annually. Thus, trying to development low CO₂ emission green concrete is an important issue, and it can reduce CO₂ emission problems in Taiwan. The purpose of this study is trying to use marble wastes and slag as the raw materials to fabricate geopolymer green concrete. The result shows the marble based geopolymer green concrete have good workability and the compressive strength after curing for 28 days and 365 days can be reached 44MPa and 53MPa in indoor environment, 28MPa and 40.43MPa in outdoor environment. The acid resistance test shows the geopolymer green concrete have good resistance for chemical attack. The coefficient of permeability of geopolymer green concrete is better than Portland concrete. By comparing with Portland cement products, the marble based geopolymer not only reduce CO₂ emission problems but also provides great performance in practices. According to the experiment results shown that geopolymer concrete has great potential for further engineering development in the future, the new material could be expected to replace the Portland cement products in the future days. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=marble" title="marble">marble</a>, <a href="https://publications.waset.org/abstracts/search?q=slag" title=" slag"> slag</a>, <a href="https://publications.waset.org/abstracts/search?q=geopolymer" title=" geopolymer"> geopolymer</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20concrete" title=" green concrete"> green concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=CO%E2%82%82%20emission" title=" CO₂ emission"> CO₂ emission</a> </p> <a href="https://publications.waset.org/abstracts/101208/a-study-on-marble-slag-based-geopolymer-green-concrete" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101208.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">138</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">500</span> Precise CNC Machine for Multi-Tasking</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haroon%20Jan%20Khan">Haroon Jan Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian-Feng%20Xu"> Xian-Feng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Syed%20Nasir%20Shah"> Syed Nasir Shah</a>, <a href="https://publications.waset.org/abstracts/search?q=Anooshay%20Niazi"> Anooshay Niazi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> CNC machines are not only used on a large scale but also now become a prominent necessity among households and smaller businesses. Printed Circuit Boards manufactured by the chemical process are not only risky and unsafe but also expensive and time-consuming. A 3-axis precise CNC machine has been developed, which not only fabricates PCB but has also been used for multi-tasks just by changing the materials used and tools, making it versatile. The advanced CNC machine takes data from CAM software. The TB-6560 controller is used in the CNC machine to adjust variation in the X, Y, and Z axes. The advanced machine is efficient in automatic drilling, engraving, and cutting. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CNC" title="CNC">CNC</a>, <a href="https://publications.waset.org/abstracts/search?q=G-code" title=" G-code"> G-code</a>, <a href="https://publications.waset.org/abstracts/search?q=CAD" title=" CAD"> CAD</a>, <a href="https://publications.waset.org/abstracts/search?q=CAM" title=" CAM"> CAM</a>, <a href="https://publications.waset.org/abstracts/search?q=Proteus" title=" Proteus"> Proteus</a>, <a href="https://publications.waset.org/abstracts/search?q=FLATCAM" title=" FLATCAM"> FLATCAM</a>, <a href="https://publications.waset.org/abstracts/search?q=Easel" title=" Easel"> Easel</a> </p> <a href="https://publications.waset.org/abstracts/174065/precise-cnc-machine-for-multi-tasking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/174065.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">160</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">499</span> Design and Fabrication of an Array Microejector Driven by a Shear-Mode Piezoelectric Actuator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chiang-Ho%20Cheng">Chiang-Ho Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong-Yih%20Cheng"> Hong-Yih Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=An-Shik%20Yang"> An-Shik Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Tung-Hsun%20Hsu"> Tung-Hsun Hsu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper reports a novel actuating design that uses the shear deformation of a piezoelectric actuator to deflect a bulge-diaphragm for driving an array microdroplet ejector. In essence, we employed a circular-shaped actuator poled radial direction with remnant polarization normal to the actuating electric field for inducing the piezoelectric shear effect. The array microdroplet ejector consists of a shear type piezoelectric actuator, a vibration plate, two chamber plates, two channel plates and a nozzle plate. The vibration, chamber and nozzle plate components are fabricated using nickel electroforming technology, whereas the channel plate is fabricated by etching of stainless steel. The diaphragm displacement was measured by the laser two-dimensional scanning vibrometer. The ejected droplets of the microejector were also observed via an optic visualization system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=actuator" title="actuator">actuator</a>, <a href="https://publications.waset.org/abstracts/search?q=nozzle" title=" nozzle"> nozzle</a>, <a href="https://publications.waset.org/abstracts/search?q=microejector" title=" microejector"> microejector</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a> </p> <a href="https://publications.waset.org/abstracts/26870/design-and-fabrication-of-an-array-microejector-driven-by-a-shear-mode-piezoelectric-actuator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26870.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">427</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">498</span> High-Frequency Modulation of Light-Emitting Diodes for New Ultraviolet Communications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Meng-Chyi%20Wu">Meng-Chyi Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Bonn%20Lin"> Bonn Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jyun-Hao%20Liao"> Jyun-Hao Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Chein-Ju%20Chen"> Chein-Ju Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Cheng%20Jhuang"> Yu-Cheng Jhuang</a>, <a href="https://publications.waset.org/abstracts/search?q=Mau-Phon%20Houng"> Mau-Phon Houng</a>, <a href="https://publications.waset.org/abstracts/search?q=Fang-Hsing%20Wang"> Fang-Hsing Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Chu%20Liu"> Min-Chu Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Fu%20Yang"> Cheng-Fu Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Shong%20Hong"> Cheng-Shong Hong</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since the use of wireless communications has become critical nowadays, the available RF spectrum has become limited. Ultraviolet (UV) communication system can alleviate the spectrum constraint making UV communication system a potential alternative to future communication demands. Also, UV links can provide faster communication rate and can be used in combination with existing RF communication links, providing new communications diversity with higher user capacity. The UV region of electromagnetic spectrum has been of interest to detector, imaging and communication technologies because the stratospheric ozone layer effectively absorbs some solar UV radiation from reaching the earth surface. The wavebands where most of UV radiation is absorbed by the ozone are commonly known as the solar blind region. By operating in UV-C band (200-280 nm) the communication system can minimize the transmission power consumption since it will have less radiation noise. UV communication uses the UV ray as the medium. Electric signal is carried on this band after being modulated and then be transmitted within the atmosphere as channel. Though the background noise of UV-C communication is very low owing to the solar-blind feature, it leads to a large propagation loss. The 370 nm UV provides a much lower propagation loss than that the UV-C does and the recent device technology for UV source on this band is more mature. The fabricated 370 nm AlGaN light-emitting diodes (LEDs) with an aperture size of 45 m exhibit a modulation bandwidth of 165 MHz at 30 mA and a high power of 7 W/cm2 at 230 A/cm2. In order to solve the problem of low power in single UV LED, a UV LED array is presented in. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultraviolet%20%28UV%29%20communication" title="ultraviolet (UV) communication">ultraviolet (UV) communication</a>, <a href="https://publications.waset.org/abstracts/search?q=light-emitting%20diodes%20%28LEDs%29" title=" light-emitting diodes (LEDs)"> light-emitting diodes (LEDs)</a>, <a href="https://publications.waset.org/abstracts/search?q=modulation%20bandwidth" title=" modulation bandwidth"> modulation bandwidth</a>, <a href="https://publications.waset.org/abstracts/search?q=LED%20array" title=" LED array"> LED array</a>, <a href="https://publications.waset.org/abstracts/search?q=370%20nm" title=" 370 nm"> 370 nm</a> </p> <a href="https://publications.waset.org/abstracts/46357/high-frequency-modulation-of-light-emitting-diodes-for-new-ultraviolet-communications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46357.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">414</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">497</span> Electricity Demand Modeling and Forecasting in Singapore</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xian%20Li">Xian Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Qing-Guo%20Wang"> Qing-Guo Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jiangshuai%20Huang"> Jiangshuai Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jidong%20Liu"> Jidong Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming%20Yu"> Ming Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Tan%20Kok%20Poh"> Tan Kok Poh </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In power industry, accurate electricity demand forecasting for a certain leading time is important for system operation and control, etc. In this paper, we investigate the modeling and forecasting of Singapore’s electricity demand. Several standard models, such as HWT exponential smoothing model, the ARMA model and the ANNs model have been proposed based on historical demand data. We applied them to Singapore electricity market and proposed three refinements based on simulation to improve the modeling accuracy. Compared with existing models, our refined model can produce better forecasting accuracy. It is demonstrated in the simulation that by adding forecasting error into the forecasting equation, the modeling accuracy could be improved greatly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20industry" title="power industry">power industry</a>, <a href="https://publications.waset.org/abstracts/search?q=electricity%20demand" title=" electricity demand"> electricity demand</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=forecasting" title=" forecasting"> forecasting</a> </p> <a href="https://publications.waset.org/abstracts/13471/electricity-demand-modeling-and-forecasting-in-singapore" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13471.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">640</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">496</span> Design and Fabrication of Micro-Bubble Oxygenator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chiang-Ho%20Cheng">Chiang-Ho Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=An-Shik%20Yang"> An-Shik Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong-Yih%20Cheng"> Hong-Yih Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper applies the MEMS technology to design and fabricate a micro-bubble generator by a piezoelectric actuator. Coupled with a nickel nozzle plate, an annular piezoelectric ceramic was utilized as the primary structure of the generator. In operations, the piezoelectric element deforms transversely under an electric field applied across the thickness of the generator. The surface of the nozzle plate can expand or contract because of the induction of radial strain, resulting in the whole structure to bend, and successively transport oxygen micro-bubbles into the blood flow for enhancing the oxygen content in blood. In the tests, a high magnification microscope and a high speed CCD camera were employed to photograph the time evolution of meniscus shape of gaseous bubbles dispensed from the micro-bubble generator for flow visualization. This investigation thus explored the bubble formation process including the influences of inlet gas pressure along with driving voltage and resonance frequency on the formed bubble extent. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=micro-bubble" title="micro-bubble">micro-bubble</a>, <a href="https://publications.waset.org/abstracts/search?q=oxygenator" title=" oxygenator"> oxygenator</a>, <a href="https://publications.waset.org/abstracts/search?q=nozzle" title=" nozzle"> nozzle</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a> </p> <a href="https://publications.waset.org/abstracts/67526/design-and-fabrication-of-micro-bubble-oxygenator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67526.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">319</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">495</span> A Privacy Protection Scheme Supporting Fuzzy Search for NDN Routing Cache Data Name</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Feng%20Tao">Feng Tao</a>, <a href="https://publications.waset.org/abstracts/search?q=Ma%20Jing"> Ma Jing</a>, <a href="https://publications.waset.org/abstracts/search?q=Guo%20Xian"> Guo Xian</a>, <a href="https://publications.waset.org/abstracts/search?q=Wang%20Jing"> Wang Jing</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Named Data Networking (NDN) replaces IP address of traditional network with data name, and adopts dynamic cache mechanism. In the existing mechanism, however, only one-to-one search can be achieved because every data has a unique name corresponding to it. There is a certain mapping relationship between data content and data name, so if the data name is intercepted by an adversary, the privacy of the data content and user’s interest can hardly be guaranteed. In order to solve this problem, this paper proposes a one-to-many fuzzy search scheme based on order-preserving encryption to reduce the query overhead by optimizing the caching strategy. In this scheme, we use hash value to ensure the user’s query safe from each node in the process of search, so does the privacy of the requiring data content. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NDN" title="NDN">NDN</a>, <a href="https://publications.waset.org/abstracts/search?q=order-preserving%20encryption" title=" order-preserving encryption"> order-preserving encryption</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20search" title=" fuzzy search"> fuzzy search</a>, <a href="https://publications.waset.org/abstracts/search?q=privacy" title=" privacy"> privacy</a> </p> <a href="https://publications.waset.org/abstracts/28847/a-privacy-protection-scheme-supporting-fuzzy-search-for-ndn-routing-cache-data-name" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28847.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">484</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">494</span> An Integrated CFD and Experimental Analysis on Double-Skin Window</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sheam-Chyun%20Lin">Sheam-Chyun Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Kai%20Chen"> Wei-Kai Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Hung-Cheng%20Yen"> Hung-Cheng Yen</a>, <a href="https://publications.waset.org/abstracts/search?q=Yung-Jen%20Cheng"> Yung-Jen Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Cheng%20Chen"> Yu-Cheng Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Result from the constant dwindle in natural resources, the alternative way to reduce the costs in our daily life would be urgent to be found in the near future. As the ancient technique based on the theory of solar chimney since roman times, the double-skin façade are simply composed of two large glass panels in purpose of daylighting and also natural ventilation in the daytime. Double-skin façade is generally installed on the exterior side of buildings as function as the window, so there’s always a huge amount of passive solar energy the façade would receive to induce the airflow every sunny day. Therefore this article imposes a domestic double-skin window for residential usage and attempts to improve the volume flow rate inside the cavity between the panels by the frame geometry design, the installation of outlet guide plate and the solar energy collection system. Note that the numerical analyses are applied to investigate the characteristics of flow field, and the boundary conditions in the simulation are totally based on the practical experiment of the original prototype. Then we redesign the prototype from the knowledge of the numerical results and fluid dynamic theory, and later the experiments of modified prototype will be conducted to verify the simulation results. The velocities at the inlet of each case are increase by 5%, 45% and 15% from the experimental data, and also the numerical simulation results reported 20% improvement in volume flow rate both for the frame geometry design and installation of outlet guide plate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title="solar energy">solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=double-skin%20fa%C3%A7ades" title=" double-skin façades"> double-skin façades</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20buoyancy" title=" thermal buoyancy"> thermal buoyancy</a>, <a href="https://publications.waset.org/abstracts/search?q=fluid%20machinery" title=" fluid machinery"> fluid machinery</a> </p> <a href="https://publications.waset.org/abstracts/26752/an-integrated-cfd-and-experimental-analysis-on-double-skin-window" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26752.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">497</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">493</span> The Effects of NaF Concentration on the Zinc Coating Electroplated in Supercritical CO2 Mixed Zinc Chloride Bath</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chun-Ying%20Lee">Chun-Ying Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Mei-Wen%20Wu"> Mei-Wen Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Li-Yi%20Cheng"> Li-Yi Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chiang-Ho%20Cheng"> Chiang-Ho Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research studies the electroplating of zinc coating in the zinc chloride bath mixed with supercritical CO2. The sodium fluoride (NaF) was used as the bath additive to change the structure and property of the coating, and therefore the roughness and corrosion resistance of the zinc coating was investigated. The surface characterization was performed using optical microscope (OM), X-ray diffractometer (XRD), and α-step profilometer. Moreover, the potentiodynamic polarization measurement in 3% NaCl solution was employed in the corrosion resistance evaluation. Because of the emulsification of the electrolyte mixed in Sc-CO2, the electroplated zinc produced the coating with smoother surface, smaller grain, better throwing power and higher corrosion resistance. The main role played by the NaF was to reduce the coating’s roughness and grain size. In other words, the CO2 mixed with the electrolyte under the supercritical condition performed the similar function as brighter and leveler in zinc electroplating to enhance the throwing power and corrosion resistance of the coating. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=supercritical%20CO2" title="supercritical CO2">supercritical CO2</a>, <a href="https://publications.waset.org/abstracts/search?q=zinc-electroplating" title=" zinc-electroplating"> zinc-electroplating</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20fluoride" title=" sodium fluoride"> sodium fluoride</a>, <a href="https://publications.waset.org/abstracts/search?q=electroplating" title=" electroplating"> electroplating</a> </p> <a href="https://publications.waset.org/abstracts/7415/the-effects-of-naf-concentration-on-the-zinc-coating-electroplated-in-supercritical-co2-mixed-zinc-chloride-bath" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7415.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">565</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">492</span> Simple Multiple-Attribute Rating Technique for Optimal Decision-Making Model on Selecting Best Spiker of World Grand Prix</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chen%20Chih-Cheng">Chen Chih-Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chen%20I-Cheng"> Chen I-Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Lee%20Yung-Tan"> Lee Yung-Tan</a>, <a href="https://publications.waset.org/abstracts/search?q=Kuo%20Yen-Whea"> Kuo Yen-Whea</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu%20Chin-Hung"> Yu Chin-Hung</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study is to construct a model for best spike player selection in a top volleyball tournament of the world. Data consisted of the records of 2013 World Grand Prix declared by International Volleyball Federation (FIVB). Simple Multiple-Attribute Rating Technique (SMART) was used for optimal decision-making model on the best spike player selection. The research results showed that the best spike player ranking by SMART is different than the ranking by FIVB. The results demonstrated the effectiveness and feasibility of the proposed model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=simple%20multiple-attribute%20rating%20technique" title="simple multiple-attribute rating technique">simple multiple-attribute rating technique</a>, <a href="https://publications.waset.org/abstracts/search?q=World%20Grand%20Prix" title=" World Grand Prix"> World Grand Prix</a>, <a href="https://publications.waset.org/abstracts/search?q=best%20spike%20player" title=" best spike player"> best spike player</a>, <a href="https://publications.waset.org/abstracts/search?q=International%20Volleyball%20Federation" title=" International Volleyball Federation"> International Volleyball Federation</a> </p> <a href="https://publications.waset.org/abstracts/3166/simple-multiple-attribute-rating-technique-for-optimal-decision-making-model-on-selecting-best-spiker-of-world-grand-prix" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3166.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">474</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">491</span> Direct Bonded Aluminum to Alumina Using a Transient Eutectic Liquid Phase for Power Electronics Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yu-Ting%20Wang">Yu-Ting Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yun-Hsiang%20Cheng"> Yun-Hsiang Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chien-Cheng%20Lin"> Chien-Cheng Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Kun-Lin%20Lin"> Kun-Lin Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Using a transient liquid phase method, Al was successfully bonded with Al₂O₃, which deposited Ni, Cu, Ge, and Si at the surface of the Al₂O₃ substrate after annealing at the relatively low melting point of Al. No reaction interlayer existed at the interface of any Al/Al₂O₃ specimens. Al−Fe intermetallic compounds, such as Al₉Fe₂ and Al₃Fe, formed in the Al substrate because of the precipitation of Fe, which was an impurity of the Al foil, and the reaction with Al at the grain boundaries of Al during annealing processing. According to the evaluation results of mechanical and thermal properties, the Al/Al₂O₃ specimen deposited on the Ni film possessed the highest shear strength, thermal conductivity, and bonding area percentage, followed by the Cu, Ge, and Si films. The properties of the Al/Al₂O₃ specimens deposited with Ge and Si were relatively unsatisfactory, which could be because the deposited amorphous layers easily formed oxide, resulting in inferior adhesion between Al and Al₂O₃. Therefore, the optimal choice for use in high-power devices is Al/Al₂O₃, with the deposition of Ni film. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=direct-bonded%20aluminum" title="direct-bonded aluminum">direct-bonded aluminum</a>, <a href="https://publications.waset.org/abstracts/search?q=transient%20liquid%20phase" title=" transient liquid phase"> transient liquid phase</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20conductivity" title=" thermal conductivity"> thermal conductivity</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructures" title=" microstructures"> microstructures</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20strength" title=" shear strength"> shear strength</a> </p> <a href="https://publications.waset.org/abstracts/116949/direct-bonded-aluminum-to-alumina-using-a-transient-eutectic-liquid-phase-for-power-electronics-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116949.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">157</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">490</span> A Study on Utilizing Temporary Water Treatment Facilities to Tackle Century-Long Drought and Emergency Water Supply</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yu-Che%20Cheng">Yu-Che Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Lih%20Chang"> Min-Lih Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Ke-Hao%20Cheng"> Ke-Hao Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Chuan-Cheng%20Wang"> Chuan-Cheng Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Taiwan is an island located along the southeastern coast of the Asian continent, located between Japan and the Philippines. It is surrounded by the sea on all sides. However, due to the presence of the Central Mountain Range, the rivers on the east and west coasts of Taiwan are relatively short. This geographical feature results in a phenomenon where, despite having rainfall that is 2.6 times the world average, 58.5% of the rainwater flows into the ocean. Moreover, approximately 80% of the annual rainfall occurs between May and October, leading to distinct wet and dry periods. To address these challenges, Taiwan relies on large reservoirs, storage ponds, and groundwater extraction for water resource allocation. It is necessary to construct water treatment facilities at suitable locations to provide the population with a stable and reliable water supply. In general, the construction of a new water treatment plant requires careful planning and evaluation. The process involves acquiring land and issuing contracts for construction in a sequential manner. With the increasing severity of global warming and climate change, there is a heightened risk of extreme hydrological events and severe water situations in the future. In cases of urgent water supply needs in a region, relying on traditional lengthy processes for constructing water treatment plants might not be sufficient to meet the urgent demand. Therefore, this study aims to explore the use of simplified water treatment procedures and the construction of rapid "temporary water treatment plants" to tackle the challenges posed by extreme climate conditions (such as a century-long drought) and situations where water treatment plant construction cannot keep up with the pace of water source development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=temporary%20water%20treatment%20plant" title="temporary water treatment plant">temporary water treatment plant</a>, <a href="https://publications.waset.org/abstracts/search?q=emergency%20water%20supply" title=" emergency water supply"> emergency water supply</a>, <a href="https://publications.waset.org/abstracts/search?q=construction%20site%20groundwater" title=" construction site groundwater"> construction site groundwater</a>, <a href="https://publications.waset.org/abstracts/search?q=drought" title=" drought"> drought</a> </p> <a href="https://publications.waset.org/abstracts/175729/a-study-on-utilizing-temporary-water-treatment-facilities-to-tackle-century-long-drought-and-emergency-water-supply" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/175729.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">88</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">489</span> Design of a Multidisciplinary Project-Oriented Capstone Course for Mechanical Engineering Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chi-Cheng%20Cheng">Chi-Cheng Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Che-Hsin%20Lin"> Che-Hsin Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Jen%20Wang"> Yu-Jen Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chua-Chin%20Wang"> Chua-Chin Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The project-oriented capstone course has become a required element for most engineering educational units. It is not only because the capstone course is an important criterion for international accreditation of engineering degree programs under Washington Accord, but also the capstone course provides an opportunity for students to apply what they have learned in their school years to actual engineering problems. Nevertheless, most project-oriented capstone courses are conducted with one single project for all students or teams. In other words, students work to reach the same or similar goals by coming up with different layouts and approaches. It appears not suitable for a multidisciplinary engineering department. Therefore, a one-year multidisciplinary project-oriented capstone course was designed for the junior year of the undergraduate program. About one-half of faculty members in the department needs to be involved in generating as many projects as possible to meet different students' interests and specialties. Project achievement has to be displayed and demonstrated in the annual exposition and competition at the end of this course. Significant success in attracting attention and hardworking of students on projects was witnessed for the past two pilot years. Analysis of course evaluation demonstrates positive impact on all perspectives despite of slightly negative influence due to poor communication and collaboration between students and their project supervisors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Capstone%20course" title="Capstone course">Capstone course</a>, <a href="https://publications.waset.org/abstracts/search?q=CDIO" title=" CDIO"> CDIO</a>, <a href="https://publications.waset.org/abstracts/search?q=engineering%20education" title=" engineering education"> engineering education</a>, <a href="https://publications.waset.org/abstracts/search?q=project-oriented%20learning" title=" project-oriented learning"> project-oriented learning</a> </p> <a href="https://publications.waset.org/abstracts/69448/design-of-a-multidisciplinary-project-oriented-capstone-course-for-mechanical-engineering-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69448.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">452</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">488</span> Development of Piezoelectric Gas Micropumps with the PDMS Check Valve Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chiang-Ho%20Cheng">Chiang-Ho Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=An-Shik%20Yang"> An-Shik Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hon-Yi%20Cheng"> Hon-Yi Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming-Yu%20Lai"> Ming-Yu Lai</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the design and fabrication of a novel piezoelectric actuator for a gas micropump with check valve having the advantages of miniature size, light weight and low power consumption. The micropump is designed to have eight major components, namely a stainless steel upper cover layer, a piezoelectric actuator, a stainless steel diaphragm, a PDMS chamber layer, two stainless steel channel layers with two valve seats, a PDMS check valve layer with two cantilever-type check valves and an acrylic substrate. A prototype of the gas micropump, with a size of 52 mm × 50 mm × 5.0 mm, is fabricated by precise manufacturing. This device is designed to pump gases with the capability of performing the self-priming and bubble-tolerant work mode by maximizing the stroke volume of the membrane as well as the compression ratio via minimization of the dead volume of the micropump chamber and channel. By experiment apparatus setup, we can get the real-time values of the flow rate of micropump and the displacement of the piezoelectric actuator, simultaneously. The gas micropump obtained higher output performance under the sinusoidal waveform of 250 Vpp. The micropump achieved the maximum pumping rates of 1185 ml/min and back pressure of 7.14 kPa at the corresponding frequency of 120 and 50 Hz. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=PDMS" title="PDMS">PDMS</a>, <a href="https://publications.waset.org/abstracts/search?q=check%20valve" title=" check valve"> check valve</a>, <a href="https://publications.waset.org/abstracts/search?q=micropump" title=" micropump"> micropump</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a> </p> <a href="https://publications.waset.org/abstracts/24822/development-of-piezoelectric-gas-micropumps-with-the-pdms-check-valve-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24822.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">456</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">487</span> Effect of Using a Mixture of Al2O3 Nanoparticles and 3-Aminopropyltriethoxysilane as the Sensing Membrane for Polysilicon Wire on pH Sensing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=You-Lin%20Wu">You-Lin Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Zong-Xian%20Wu"> Zong-Xian Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Jing-Jenn%20Lin"> Jing-Jenn Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Shih-Hung%20Lin"> Shih-Hung Lin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, a polysilicon wire (PSW) coated with a mixture of 3-aminopropyltriethoxysilane (r-APTES) and Al2O3 nanoparticles as the sensing membrane prepared with various Al2O3/r-APTES and dispersing agent/r-APTES ratios for pH sensing is studied. The r-APTES and dispersed Al2O3 nanoparticles mixture was directly transferred to PSW surface by solution phase deposition (SPD). It is found that using a mixture of Al2O3 nanoparticles and r-APTES as the sensing membrane help in improving the pH sensing of the PSW sensor and a 5 min SPD deposition time is the best. Dispersing agent is found to be necessary for better pH sensing when preparing the mixture of Al2O3 nanoparticles and r-APTES. The optimum condition for preparing the mixture is found to be Al2O3/r-APTES ratio of 2% and dispersing agent/r-APTES ratio of 0.3%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=al2o3%20nanoparticles" title="al2o3 nanoparticles">al2o3 nanoparticles</a>, <a href="https://publications.waset.org/abstracts/search?q=ph%20sensing" title=" ph sensing"> ph sensing</a>, <a href="https://publications.waset.org/abstracts/search?q=polysilicon%20wire%20sensor" title=" polysilicon wire sensor"> polysilicon wire sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=r-aptes" title=" r-aptes"> r-aptes</a> </p> <a href="https://publications.waset.org/abstracts/31242/effect-of-using-a-mixture-of-al2o3-nanoparticles-and-3-aminopropyltriethoxysilane-as-the-sensing-membrane-for-polysilicon-wire-on-ph-sensing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31242.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">413</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">486</span> A Potential Spin-orbit Torque Device Using the Tri-layer Structure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chih-Wei%20Cheng">Chih-Wei Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei-Jen%20Chan"> Wei-Jen Chan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Han%20Huang"> Yu-Han Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi-Tsung%20Lin"> Yi-Tsung Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Yen-Wei%20Huang"> Yen-Wei Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Cheng%20Chen"> Min-Cheng Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Shou-Zen%20Chang"> Shou-Zen Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20Chern"> G. Chern</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuan-Chieh%20Tseng"> Yuan-Chieh Tseng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> How to develop spin-orbit-torque (SOT) devices with the virtues of field-free, perpendicular magnetic anisotropy (PMA), and low switching current is one of the many challenges in spintronics today. We propose a CoFeB/Ta/CoFeB tri-layer antiferromagnetic SOT device that could meet the above requirements. The device’s PMA was developed by adopting CoFeB–MgO interface. The key to the success of this structure is to ensure that (i)changes of the inter-layer coupling(IEC) and CoFeB anisotropy can occur simultaneously; (ii) one of the CoFeB needs to have a slightly tilted moment in the beginning. When sufficient current is given, the SHEreverses the already-tiltedCoFeB, and the other CoFeB can be reversed simultaneously by the IEC with the field-free nature. Adjusting the thickness of Ta can modify the coupling state to reduce the switching current while the field-free nature was preserved. Micromagnetic simulation suggests that the Néel orange peel effect (NOPE) is non-negligible due to interface roughness and coupling effect in the presence of perpendicular anisotropy. Fortunately, the Néel field induced by the NOPE appears to favor the field-free reversal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CoFeB" title="CoFeB">CoFeB</a>, <a href="https://publications.waset.org/abstracts/search?q=spin-orbit%20torque" title=" spin-orbit torque"> spin-orbit torque</a>, <a href="https://publications.waset.org/abstracts/search?q=antiferromagnetic" title=" antiferromagnetic"> antiferromagnetic</a>, <a href="https://publications.waset.org/abstracts/search?q=MRAM" title=" MRAM"> MRAM</a>, <a href="https://publications.waset.org/abstracts/search?q=trilayer" title=" trilayer"> trilayer</a> </p> <a href="https://publications.waset.org/abstracts/158357/a-potential-spin-orbit-torque-device-using-the-tri-layer-structure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158357.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">117</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">485</span> Understanding the Performance and Loss Mechanisms in Ag Alloy CZTS Solar Cells: Photocurrent Generation, Charge Separation, and Carrier Transport</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kang%20Jian%20Xian">Kang Jian Xian</a>, <a href="https://publications.waset.org/abstracts/search?q=Huda%20Abdullah"> Huda Abdullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Md.%20Akhtaruzzaman"> Md. Akhtaruzzaman</a>, <a href="https://publications.waset.org/abstracts/search?q=Iskandar%20Yahya"> Iskandar Yahya</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Hafiz%20Dzarfan%20Othman"> Mohd Hafiz Dzarfan Othman</a>, <a href="https://publications.waset.org/abstracts/search?q=Brian%20Yulianto"> Brian Yulianto</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The CZTS absorber layer doped with a silver (Ag) is one of the candidates that suggest improving the efficiency of thin films. Silver element functions to reduce antisite defects, increase grain size and create the plasmonic effect. In this work, an experimental study has been done to investigate the electrical and physical properties of CZTS, ACZTS, and AZTS. Ag replaces the Cu in (Cu1-xAgx)2ZnSnS4 (ACZTS) is up to x ≤1. ACZTS thin-films solar cells have been deposited by sol–the gel spin coating method. There are a total of 19 samples done with 11 significant percentages (0%, 10%, 20%… 100%) to show the whole phenomena of efficiency rate and nine specific percentages to find out the best concentration rate for Ag-doped. The obtained results can be helpful for better understanding ACZTS layers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CZTS" title="CZTS">CZTS</a>, <a href="https://publications.waset.org/abstracts/search?q=ACZTS" title=" ACZTS"> ACZTS</a>, <a href="https://publications.waset.org/abstracts/search?q=AZTS" title=" AZTS"> AZTS</a>, <a href="https://publications.waset.org/abstracts/search?q=silver" title=" silver"> silver</a>, <a href="https://publications.waset.org/abstracts/search?q=antisite" title=" antisite"> antisite</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=thin-film%20solar%20cell" title=" thin-film solar cell"> thin-film solar cell</a> </p> <a href="https://publications.waset.org/abstracts/161098/understanding-the-performance-and-loss-mechanisms-in-ag-alloy-czts-solar-cells-photocurrent-generation-charge-separation-and-carrier-transport" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161098.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">92</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">484</span> Secure Network Coding against Content Pollution Attacks in Named Data Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tao%20Feng">Tao Feng</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaomei%20Ma"> Xiaomei Ma</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian%20Guo"> Xian Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Jing%20Wang"> Jing Wang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Named Data Network (NDN) is one of the future Internet architecture, all nodes (i.e., hosts, routers) are allowed to have a local cache, used to satisfy incoming requests for content. However, depending on caching allows an adversary to perform attacks that are very effective and relatively easy to implement, such as content pollution attack. In this paper, we use a method of secure network coding based on homomorphic signature system to solve this problem. Firstly ,we use a dynamic public key technique, our scheme for each generation authentication without updating the initial secret key used. Secondly, employing the homomorphism of hash function, intermediate node and destination node verify the signature of the received message. In addition, when the network topology of NDN is simple and fixed, the code coefficients in our scheme are generated in a pseudorandom number generator in each node, so the distribution of the coefficients is also avoided. In short, our scheme not only can efficiently prevent against Intra/Inter-GPAs, but also can against the content poisoning attack in NDN. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=named%20data%20networking" title="named data networking">named data networking</a>, <a href="https://publications.waset.org/abstracts/search?q=content%20polloution%20attack" title=" content polloution attack"> content polloution attack</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20coding%20signature" title=" network coding signature"> network coding signature</a>, <a href="https://publications.waset.org/abstracts/search?q=internet%20architecture" title=" internet architecture"> internet architecture</a> </p> <a href="https://publications.waset.org/abstracts/28198/secure-network-coding-against-content-pollution-attacks-in-named-data-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28198.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">337</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">483</span> A Study of Flipped Classroom’s Influence on Classroom Environment of College English Reading, Writing and Translating</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xian%20Xie">Xian Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Qinghua%20Fang"> Qinghua Fang </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study used quantitative and qualitative methods to explore the characteristics of flipped classroom’s influence on classroom environment of college English reading, writing, and translating, and to summarize and reflect on the teaching characteristics of college English Reading, writing, and translating. The results of the study indicated that after the flipped classroom applied to reading, writing, and translating, students’ performance was improved to a certain extent, the classroom environment was improved to some extent, students of the flipped classroom are generally satisfied with the classroom environment; students showed a certain degree of individual differences to the degree of cooperation, participation, self-responsibility, task-orientation, and the teacher leadership and innovation. The study indicated that the implementation of flipped classroom teaching mode can optimize College English reading, writing, and translating classroom environment and realize target－learner as the center in foreign language teaching and learning, but bring a greater challenge to teachers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=classroom%20environment" title="classroom environment">classroom environment</a>, <a href="https://publications.waset.org/abstracts/search?q=college%20English%20reading" title=" college English reading"> college English reading</a>, <a href="https://publications.waset.org/abstracts/search?q=writing%20and%20translating" title=" writing and translating"> writing and translating</a>, <a href="https://publications.waset.org/abstracts/search?q=individual%20differences" title=" individual differences"> individual differences</a>, <a href="https://publications.waset.org/abstracts/search?q=flipped%20classroom" title=" flipped classroom"> flipped classroom</a> </p> <a href="https://publications.waset.org/abstracts/56637/a-study-of-flipped-classrooms-influence-on-classroom-environment-of-college-english-reading-writing-and-translating" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56637.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">265</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">482</span> Nonlinear Modelling and Analysis of Piezoelectric Smart Thin-Walled Structures in Supersonic Flow</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shu-Yang%20Zhang">Shu-Yang Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shun-Qi%20Zhang"> Shun-Qi Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhan-Xi%20Wang"> Zhan-Xi Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian-Sheng%20Qin"> Xian-Sheng Qin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thin-walled structures are used more and more widely in modern aircrafts and some other structures in aerospace field nowadays. Accompanied by the wider applications, the vibration of the structures has been a bigger problem. Because of the direct and converse piezoelectric effect, piezoelectric materials combined to host thin-walled structures, named as piezoelectric smart structures, can be an effective way to suppress the vibration. So, an accurate model for piezoelectric thin-walled structures in air flow is necessary and important. In our recent work, an electromechanical coupling nonlinear aerodynamic finite element model of piezoelectric smart thin-walled structures is built based on the Reissner-Mindlin plate theory and first-order piston theory for aerodynamic pressure of supersonic flow. Von Kármán type nonlinearity is considered in the present model. Finally, the model is validated by experimental and numerical results from the literature, which can describe the vibration of the structures in supersonic flow precisely. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=piezoelectric%20smart%20structures" title="piezoelectric smart structures">piezoelectric smart structures</a>, <a href="https://publications.waset.org/abstracts/search?q=aerodynamic" title=" aerodynamic"> aerodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=geometric%20nonlinearity" title=" geometric nonlinearity"> geometric nonlinearity</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20analysis" title=" finite element analysis"> finite element analysis</a> </p> <a href="https://publications.waset.org/abstracts/72915/nonlinear-modelling-and-analysis-of-piezoelectric-smart-thin-walled-structures-in-supersonic-flow" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72915.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">389</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">481</span> Computer Simulation to Investigate Magnetic and Wave-Absorbing Properties of Iron Nanoparticles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chuan-Wen%20Liu">Chuan-Wen Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Hsien%20Liu"> Min-Hsien Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chung-Chieh%20Tai"> Chung-Chieh Tai</a>, <a href="https://publications.waset.org/abstracts/search?q=Bing-Cheng%20Kuo"> Bing-Cheng Kuo</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Lung%20Chen"> Cheng-Lung Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Huazhen%20Shen"> Huazhen Shen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A recent surge in research on magnetic radar absorbing materials (RAMs) has presented researchers with new opportunities and challenges. This study was performed to gain a better understanding of the wave-absorbing phenomenon of magnetic RAMs. First, we hypothesized that the absorbing phenomenon is dependent on the particle shape. Using the Material Studio program and the micro-dot magnetic dipoles (MDMD) method, we obtained results from magnetic RAMs to support this hypothesis. The total MDMD energy of disk-like iron particles was greater than that of spherical iron particles. In addition, the particulate aggregation phenomenon decreases the wave-absorbance, according to both experiments and computational data. To conclude, this study may be of importance in terms of explaining the wave- absorbing characteristic of magnetic RAMs. Combining molecular dynamics simulation results and the theory of magnetization of magnetic dots, we investigated the magnetic properties of iron materials with different particle shapes and degrees of aggregation under external magnetic fields. The MDMD of the materials under magnetic fields of various strengths were simulated. Our results suggested that disk-like iron particles had a better magnetization than spherical iron particles. This result could be correlated with the magnetic wave- absorbing property of iron material. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wave-absorbing%20property" title="wave-absorbing property">wave-absorbing property</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20material" title=" magnetic material"> magnetic material</a>, <a href="https://publications.waset.org/abstracts/search?q=micro-dot%20magnetic%20dipole" title=" micro-dot magnetic dipole"> micro-dot magnetic dipole</a>, <a href="https://publications.waset.org/abstracts/search?q=particulate%20aggregation" title=" particulate aggregation"> particulate aggregation</a> </p> <a href="https://publications.waset.org/abstracts/78242/computer-simulation-to-investigate-magnetic-and-wave-absorbing-properties-of-iron-nanoparticles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78242.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">490</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">480</span> Evaluating Cognition and Movement Coordination of Adolescents with Intellectual Disabilities through Ball Games</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wann-Yun%20Shieh">Wann-Yun Shieh</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsin-Yi%20Kathy%20Cheng"> Hsin-Yi Kathy Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Yan-Ying%20Ju"> Yan-Ying Ju</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Chun%20Yu"> Yu-Chun Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ya-Cheng%20Shieh"> Ya-Cheng Shieh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adolescents who have intellectual disabilities often demonstrate maladaptive behaviors in their daily activities due to either physical abnormalities or neurological disorders. These adolescents commonly struggle with their cognition and movement coordination when it comes to executing tasks such as throwing or catching objects smoothly, quickly, and gracefully, in contrast to their typically developing peers. Simply measuring movement time and distance doesn't provide a comprehensive view of their performance challenges. In this study, a ball-playing approach was proposed to assess the cognition and movement coordination of adolescents with intellectual disabilities using a smart ball equipped with an embedded inertial sensor. Four distinct ball games were specifically designed for this smart ball: two focusing on lower limb activities (dribbling along a straight line and navigating a zigzag path) and two centered around upper limb tasks (picking up and throwing and catching the ball). The cognition and movement coordination of 25 adolescents with intellectual disabilities (average age 18.36 ± 2.46 years) with that of 25 typically developing adolescents (average age 18.36 ± 0.49 years) were compared in these four tests. The results clearly revealed significant differences in the cognition and movement coordination between the adolescents with intellectual disabilities and the typically developing adolescents. These differences encompassed aspects such as movement speed, hand-eye coordination, and control over objects across all the tests conducted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cognition" title="cognition">cognition</a>, <a href="https://publications.waset.org/abstracts/search?q=intellectual%20disabilities" title=" intellectual disabilities"> intellectual disabilities</a>, <a href="https://publications.waset.org/abstracts/search?q=movement%20coordination" title=" movement coordination"> movement coordination</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20ball" title=" smart ball"> smart ball</a> </p> <a href="https://publications.waset.org/abstracts/173993/evaluating-cognition-and-movement-coordination-of-adolescents-with-intellectual-disabilities-through-ball-games" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173993.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">479</span> An Experimental Study of Low Concentration CO₂ Capture from Regenerative Thermal Oxidation Tail Gas in Rotating Packed Bed</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dang%20HuynhMinhTam">Dang HuynhMinhTam</a>, <a href="https://publications.waset.org/abstracts/search?q=Kuang-Cong%20Lu"> Kuang-Cong Lu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi-Hung%20Chen"> Yi-Hung Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhung-Yu%20Lin"> Zhung-Yu Lin</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Siang%20Cheng"> Cheng-Siang Cheng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Carbon capture, utilization, and storage (CCUS) technology become a predominant technique to mitigate carbon dioxide and achieve net-zero emissions goals. This research targets to continuously capture the low concentration CO₂ from the tail gas of the regenerative thermal oxidizer (RTO) in the high technology industry. A rotating packed bed (RPB) reactor is investigated to capture the efficiency of CO₂ using a mixture of NaOH/Na₂CO₃ solutions to simulate the real absorbed solution. On a lab scale, semi-batch experiments of continuous gas flow and circulating absorbent solution are conducted to find the optimal parameters and are then examined in a continuous operation. In the semi-batch tests, the carbon capture efficiency and pH variation in the conditions of a low concentration CO₂ (about 1.13 vol%), the NaOH concentration of 1 wt% or 2 wt% mixed with 14 wt% Na₂CO₃, the rotating speed (600, 900, 1200 rpm), the gas-liquid ratio (100, 200, and 400), and the temperature of absorbent solution of 40 ºC are studied. The CO₂ capture efficiency significantly increases with higher rotating speed and smaller gas-liquid ratio, respectively, while the difference between the NaOH concentration of 1 wt% and 2 wt% is relatively small. The maximum capture efficiency is close to 80% in the conditions of the NaOH concentration of 1 wt%, the G/L ratio of 100, and the rotating speed of 1200 rpm within the first 5 minutes. Furthermore, the continuous operation based on similar conditions also demonstrates the steady efficiency of the carbon capture of around 80%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20dioxide%20capture" title="carbon dioxide capture">carbon dioxide capture</a>, <a href="https://publications.waset.org/abstracts/search?q=regenerative%20thermal%20oxidizer" title=" regenerative thermal oxidizer"> regenerative thermal oxidizer</a>, <a href="https://publications.waset.org/abstracts/search?q=rotating%20packed%20bed" title=" rotating packed bed"> rotating packed bed</a>, <a href="https://publications.waset.org/abstracts/search?q=sodium%20hydroxide" title=" sodium hydroxide"> sodium hydroxide</a> </p> <a href="https://publications.waset.org/abstracts/182235/an-experimental-study-of-low-concentration-co2-capture-from-regenerative-thermal-oxidation-tail-gas-in-rotating-packed-bed" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/182235.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">60</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">478</span> Emotion Oriented Students' Opinioned Topic Detection for Course Reviews in Massive Open Online Course</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zhi%20Liu">Zhi Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian%20Peng"> Xian Peng</a>, <a href="https://publications.waset.org/abstracts/search?q=Monika%20Domanska"> Monika Domanska</a>, <a href="https://publications.waset.org/abstracts/search?q=Lingyun%20Kang"> Lingyun Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Sannyuya%20Liu"> Sannyuya Liu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Massive Open education has become increasingly popular among worldwide learners. An increasing number of course reviews are being generated in Massive Open Online Course (MOOC) platform, which offers an interactive feedback channel for learners to express opinions and feelings in learning. These reviews typically contain subjective emotion and topic information towards the courses. However, it is time-consuming to artificially detect these opinions. In this paper, we propose an emotion-oriented topic detection model to automatically detect the students’ opinioned aspects in course reviews. The known overall emotion orientation and emotional words in each review are used to guide the joint probabilistic modeling of emotion and aspects in reviews. Through the experiment on real-life review data, it is verified that the distribution of course-emotion-aspect can be calculated to capture the most significant opinioned topics in each course unit. This proposed technique helps in conducting intelligent learning analytics for teachers to improve pedagogies and for developers to promote user experiences. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Massive%20Open%20Online%20Course%20%28MOOC%29" title="Massive Open Online Course (MOOC)">Massive Open Online Course (MOOC)</a>, <a href="https://publications.waset.org/abstracts/search?q=course%20reviews" title=" course reviews"> course reviews</a>, <a href="https://publications.waset.org/abstracts/search?q=topic%20model" title=" topic model"> topic model</a>, <a href="https://publications.waset.org/abstracts/search?q=emotion%20recognition" title=" emotion recognition"> emotion recognition</a>, <a href="https://publications.waset.org/abstracts/search?q=topical%20aspects" title=" topical aspects"> topical aspects</a> </p> <a href="https://publications.waset.org/abstracts/86771/emotion-oriented-students-opinioned-topic-detection-for-course-reviews-in-massive-open-online-course" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86771.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">262</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">477</span> Risk Screening in Digital Insurance Distribution: Evidence and Explanations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Finbarr%20Murphy">Finbarr Murphy</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Xu"> Wei Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xian%20Xu"> Xian Xu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The embedding of digital technologies in the global economy has attracted increasing attention from economists. With a large and detailed dataset, this study examines the specific case where consumers have a choice between offline and digital channels in the context of insurance purchases. We find that digital channels screen consumers with lower unobserved risk. For the term life, endowment, and disease insurance products, the average risk of the policies purchased through digital channels was 75%, 21%, and 31%, respectively, lower than those purchased offline. As a consequence, the lower unobserved risk leads to weaker information asymmetry and higher profitability of digital channels. We highlight three mechanisms of the risk screening effect: heterogeneous marginal influence of channel features on insurance demand, the channel features directly related to risk control, and the link between the digital divide and risk. We also find that the risk screening effect mainly comes from the extensive margin, i.e., from new consumers. This paper contributes to three connected areas in the insurance context: the heterogeneous economic impacts of digital technology adoption, insurer-side risk selection, and insurance marketing. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20economy" title="digital economy">digital economy</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20asymmetry" title=" information asymmetry"> information asymmetry</a>, <a href="https://publications.waset.org/abstracts/search?q=insurance" title=" insurance"> insurance</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20application" title=" mobile application"> mobile application</a>, <a href="https://publications.waset.org/abstracts/search?q=risk%20screening" title=" risk screening"> risk screening</a> </p> <a href="https://publications.waset.org/abstracts/164066/risk-screening-in-digital-insurance-distribution-evidence-and-explanations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164066.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">476</span> Analysis of Accurate Direct-Estimation of the Maximum Power Point and Thermal Characteristics of High Concentration Photovoltaic Modules</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yan-Wen%20Wang">Yan-Wen Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chu-Yang%20Chou"> Chu-Yang Chou</a>, <a href="https://publications.waset.org/abstracts/search?q=Jen-Cheng%20Wang"> Jen-Cheng Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Min-Sheng%20Liao"> Min-Sheng Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsuan-Hsiang%20%20Hsu"> Hsuan-Hsiang Hsu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Ying%20Chou"> Cheng-Ying Chou</a>, <a href="https://publications.waset.org/abstracts/search?q=Chen-Kang%20Huang"> Chen-Kang Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Kun-Chang%20%20Kuo"> Kun-Chang Kuo</a>, <a href="https://publications.waset.org/abstracts/search?q=Joe-Air%20Jiang"> Joe-Air Jiang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Performance-related parameters of high concentration photovoltaic (HCPV) modules (e.g. current and voltage) are required when estimating the maximum power point using numerical and approximation methods. The maximum power point on the characteristic curve for a photovoltaic module varies when temperature or solar radiation is different. It is also difficult to estimate the output performance and maximum power point (MPP) due to the special characteristics of HCPV modules. Based on the p-n junction semiconductor theory, a brand new and simple method is presented in this study to directly evaluate the MPP of HCPV modules. The MPP of HCPV modules can be determined from an irradiated I-V characteristic curve, because there is a non-linear relationship between the temperature of a solar cell and solar radiation. Numerical simulations and field tests are conducted to examine the characteristics of HCPV modules during maximum output power tracking. The performance of the presented method is evaluated by examining the dependence of temperature and irradiation intensity on the MPP characteristics of HCPV modules. These results show that the presented method allows HCPV modules to achieve their maximum power and perform power tracking under various operation conditions. A 0.1% error is found between the estimated and the real maximum power point. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20performance" title="energy performance">energy performance</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20concentrated%20photovoltaic" title=" high concentrated photovoltaic"> high concentrated photovoltaic</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point" title=" maximum power point"> maximum power point</a>, <a href="https://publications.waset.org/abstracts/search?q=p-n%20junction%20semiconductor" title=" p-n junction semiconductor"> p-n junction semiconductor</a> </p> <a href="https://publications.waset.org/abstracts/63807/analysis-of-accurate-direct-estimation-of-the-maximum-power-point-and-thermal-characteristics-of-high-concentration-photovoltaic-modules" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63807.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">584</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">475</span> Inhibitory Effect of Lactic Acid Bacteria on Uropathogenic Escherichia coli-Induced Urinary Tract Infections</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cheng-Chih%20Tsai">Cheng-Chih Tsai</a>, <a href="https://publications.waset.org/abstracts/search?q=Yu-Hsuan%20Liu"> Yu-Hsuan Liu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cheng-Ying%20Ho"> Cheng-Ying Ho</a>, <a href="https://publications.waset.org/abstracts/search?q=Chun-Chin%20Huang"> Chun-Chin Huang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study evaluated the in vitro and in vivo antimicrobial activity of selected lactic acid bacteria (LAB) against Uropathogenic Escherichia coli (UPEC) for prevention and amelioration of UTIs. We screened LAB strains with antimicrobial effects on UPEC using a well-diffusion assay, bacterial adherence to the uroepithelium cell line SV-HUC-1 (BCRC 60358), and a coculture inhibition assay. The results showed that the 7 LAB strains (Lactobacillus paracasei, L. salivarius, two Pediococcus pentosaceus strains, two L. plantarum strains, and L. crispatus) and the fermented probiotic products produced by these multi-LAB strains exhibited potent zones of inhibition against UPEC. Moreover, the LAB strains and probiotic products adhered strongly to the uroepithelium SV-HUC-1 cell line. The growth of UPEC strains was also markedly inhibited after co-culture with the LAB strains and probiotic products in human urine. In addition, the enhanced levels of IL-6, IL-8 and lactic acid dehydrogenase were significantly decreased by treatments with the LAB strains and probiotic products in UPEC-induced SV-HUC-1 cells. Furthermore, oral administration of probiotic products reduced the number of viable UPEC in the urine of UPEC-challenged BALB/c mice. Taken together, this study demonstrates that probiotic supplementation may be useful as an adjuvant therapy for the treatment of bacterial-induced urinary tract infections. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=lactic%20acid%20bacterium" title="lactic acid bacterium">lactic acid bacterium</a>, <a href="https://publications.waset.org/abstracts/search?q=SV-HUC-1%20uroepithelium" title=" SV-HUC-1 uroepithelium"> SV-HUC-1 uroepithelium</a>, <a href="https://publications.waset.org/abstracts/search?q=urinary%20tract%20infection" title=" urinary tract infection"> urinary tract infection</a>, <a href="https://publications.waset.org/abstracts/search?q=uropathogenic%20Escherichia%20coli" title=" uropathogenic Escherichia coli"> uropathogenic Escherichia coli</a>, <a href="https://publications.waset.org/abstracts/search?q=BALB%2Fc%20mice" title=" BALB/c mice"> BALB/c mice</a> </p> <a href="https://publications.waset.org/abstracts/52200/inhibitory-effect-of-lactic-acid-bacteria-on-uropathogenic-escherichia-coli-induced-urinary-tract-infections" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52200.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">384</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Xian%20Cheng&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Xian%20Cheng&page=3">3</a></li> <li class="page-item"><a class="page-link" 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