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model</title> <meta name="description" content="Search results for: room model"> <meta name="keywords" content="room model"> <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" 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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="room model"> <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> 17962</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: room model</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">17962</span> 3D CFD Modelling of the Airflow and Heat Transfer in Cold Room Filled with Dates </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zina%20Ghiloufi">Zina Ghiloufi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tahar%20Khir"> Tahar Khir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A transient three-dimensional computational fluid dynamics (CFD) model is developed to determine the velocity and temperature distribution in different positions cold room during pre-cooling of dates. The turbulence model used is the k-ω Shear Stress Transport (SST) with the standard wall function, the air. The numerical results obtained show that cooling rate is not uniform inside the room; the product at the medium of room has a slower cooling rate. This cooling heterogeneity has a large effect on the energy consumption during cold storage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD" title="CFD">CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=cold%20room" title=" cold room"> cold room</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20rate" title=" cooling rate"> cooling rate</a>, <a href="https://publications.waset.org/abstracts/search?q=dDates" title=" dDates"> dDates</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=k-%CF%89%20%28SST%29" title=" k-ω (SST)"> k-ω (SST)</a> </p> <a href="https://publications.waset.org/abstracts/90986/3d-cfd-modelling-of-the-airflow-and-heat-transfer-in-cold-room-filled-with-dates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90986.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">235</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">17961</span> Mixed Model Sequencing in Painting Production Line</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Unchalee%20Inkampa">Unchalee Inkampa</a>, <a href="https://publications.waset.org/abstracts/search?q=Tuanjai%20Somboonwiwat"> Tuanjai Somboonwiwat </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Painting process of automobiles and automobile parts, which is a continuous process based on EDP (Electrode position paint, EDP). Through EDP, all work pieces will be continuously sent to the painting process. Work process can be divided into 2 groups based on the running time: Painting Room 1 and Painting Room 2. This leads to continuous operation. The problem that arises is waiting for workloads onto Painting Room. The grading process EDP to Painting Room is a major problem. Therefore, this paper aim to develop production sequencing method by applying EDP to painting process. It also applied fixed rate launching for painting room and earliest due date (EDD) for EDP process and swap pairwise interchange for waiting time to a minimum of machine. The result found that the developed method could improve painting reduced waiting time, on time delivery, meeting customers wants and improved productivity of painting unit. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sequencing" title="sequencing">sequencing</a>, <a href="https://publications.waset.org/abstracts/search?q=mixed%20model%20lines" title=" mixed model lines"> mixed model lines</a>, <a href="https://publications.waset.org/abstracts/search?q=painting%20process" title=" painting process"> painting process</a>, <a href="https://publications.waset.org/abstracts/search?q=electrode%20position%20paint" title=" electrode position paint"> electrode position paint</a> </p> <a href="https://publications.waset.org/abstracts/34291/mixed-model-sequencing-in-painting-production-line" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34291.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">420</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">17960</span> Acoustic Room Impulse Response Computation with Image Sources and Frequency Dependent Boundary Reflection Coefficients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pratik%20Gandhi">Pratik Gandhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Kavitha%20Chandra"> Kavitha Chandra</a>, <a href="https://publications.waset.org/abstracts/search?q=Charles%20Thompson"> Charles Thompson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A computational model of the acoustic room impulse response between transmitters and receivers located in an enclosed cavity under the influence of frequency-dependent reflection coefficients of the walls is presented. The characteristic features of the impulse responses that differentiate these results from frequency-independent reflecting surfaces are discussed. The image-source model is derived from the first principle solution to Green's function of the acoustic wave equation. The post-processing of the computed impulse response with a band-pass filter to better represents the response of a loud-speaker is demonstrated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustic%20room%20impulse%20response" title="acoustic room impulse response">acoustic room impulse response</a>, <a href="https://publications.waset.org/abstracts/search?q=frequency%20dependent%20reflection%20coefficients" title=" frequency dependent reflection coefficients"> frequency dependent reflection coefficients</a>, <a href="https://publications.waset.org/abstracts/search?q=Green%27s%20function" title=" Green's function"> Green's function</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20model" title=" image model"> image model</a> </p> <a href="https://publications.waset.org/abstracts/152987/acoustic-room-impulse-response-computation-with-image-sources-and-frequency-dependent-boundary-reflection-coefficients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152987.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">232</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">17959</span> Best Responses for the Dynamic Model of Hotel Room Rate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xuan%20Tran">Xuan Tran</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is to present a comprehensive dynamic model for pricing strategies in the hotel competition to find a win-win situation for the competitive set. By utilizing the Cobb-Douglas utility model, the study establishes room rates by analyzing the price elasticity of demand across a competitive set of four hotels, with a focus on occupancy rates. To further enhance the analysis, game theory is applied to identify the best response for each competitive party, which illustrates the optimal pricing strategy for each hotel in the competitive landscape. This approach offers valuable insights into how hotels can strategically adjust their room rates in response to market conditions and competitor actions. The primary contributions of this research include as follows: (1) advantages for both individual hotels and the broader competitive hotel market, (2) benefits for hotel management overseeing multiple brands, and (3) positive impacts on the local community. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dynamic%20model" title="dynamic model">dynamic model</a>, <a href="https://publications.waset.org/abstracts/search?q=game%20theory" title=" game theory"> game theory</a>, <a href="https://publications.waset.org/abstracts/search?q=best%20response" title=" best response"> best response</a>, <a href="https://publications.waset.org/abstracts/search?q=Cobb-Douglas" title=" Cobb-Douglas"> Cobb-Douglas</a> </p> <a href="https://publications.waset.org/abstracts/190235/best-responses-for-the-dynamic-model-of-hotel-room-rate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/190235.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">22</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">17958</span> Effects of the Air Supply Outlets Geometry on Human Comfort inside Living Rooms: CFD vs. ADPI</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taher%20M.%20Abou-deif">Taher M. Abou-deif</a>, <a href="https://publications.waset.org/abstracts/search?q=Esmail%20M.%20El-Bialy"> Esmail M. El-Bialy</a>, <a href="https://publications.waset.org/abstracts/search?q=Essam%20E.%20Khalil"> Essam E. Khalil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper is devoted to numerically investigating the influence of the air supply outlets geometry on human comfort inside living looms. A computational fluid dynamics model is developed to examine the air flow characteristics of a room with different supply air diffusers. The work focuses on air flow patterns, thermal behavior in the room with few number of occupants. As an input to the full-scale 3-D room model, a 2-D air supply diffuser model that supplies direction and magnitude of air flow into the room is developed. Air distribution effect on thermal comfort parameters was investigated depending on changing the air supply diffusers type, angles and velocity. Air supply diffusers locations and numbers were also investigated. The pre-processor Gambit is used to create the geometric model with parametric features. Commercially available simulation software “Fluent 6.3” is incorporated to solve the differential equations governing the conservation of mass, three momentum and energy in the processing of air flow distribution. Turbulence effects of the flow are represented by the well-developed two equation turbulence model. In this work, the so-called standard k-ε turbulence model, one of the most widespread turbulence models for industrial applications, was utilized. Basic parameters included in this work are air dry bulb temperature, air velocity, relative humidity and turbulence parameters are used for numerical predictions of indoor air distribution and thermal comfort. The thermal comfort predictions through this work were based on ADPI (Air Diffusion Performance Index),the PMV (Predicted Mean Vote) model and the PPD (Percentage People Dissatisfied) model, the PMV and PPD were estimated using Fanger’s model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title="thermal comfort">thermal comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=Fanger%27s%20model" title=" Fanger's model"> Fanger's model</a>, <a href="https://publications.waset.org/abstracts/search?q=ADPI" title=" ADPI"> ADPI</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20effeciency" title=" energy effeciency"> energy effeciency</a> </p> <a href="https://publications.waset.org/abstracts/8211/effects-of-the-air-supply-outlets-geometry-on-human-comfort-inside-living-rooms-cfd-vs-adpi" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8211.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">409</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">17957</span> Response of Full-Scale Room Building Against Blast Loading</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eid%20Badshah">Eid Badshah</a>, <a href="https://publications.waset.org/abstracts/search?q=Amjad%20Naseer"> Amjad Naseer</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Ashraf"> Muhammad Ashraf</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper full-scale brick masonry room along with the veranda of a typical school building was subjected to eight successive blast tests with increasing charge weights ranging from 0.5kg to 16.02kg at 3.66m fixed stand-off distance. Pressure-time histories were obtained by data acquisition system from pressure sensors, installed on different points of room as well as veranda columns. The resulting damage pattern of different locations was observed during each test. Weak zones of masonry room were identified. Scaled distances for different damage levels in masonry room were experimentally obtained. The results provided a basis for determining the response of masonry room building against blast loading in a specific threat scenario. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=peak%20pressure" title="peak pressure">peak pressure</a>, <a href="https://publications.waset.org/abstracts/search?q=composition-B" title=" composition-B"> composition-B</a>, <a href="https://publications.waset.org/abstracts/search?q=TNT" title=" TNT"> TNT</a>, <a href="https://publications.waset.org/abstracts/search?q=pressure%20sensor" title=" pressure sensor"> pressure sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=scaled%20distance" title=" scaled distance"> scaled distance</a>, <a href="https://publications.waset.org/abstracts/search?q=masonry" title=" masonry"> masonry</a> </p> <a href="https://publications.waset.org/abstracts/157393/response-of-full-scale-room-building-against-blast-loading" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157393.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">126</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">17956</span> Performance of an Absorption Refrigerator Using a Solar Thermal Collector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abir%20Hmida">Abir Hmida</a>, <a href="https://publications.waset.org/abstracts/search?q=Nihel%20Chekir"> Nihel Chekir</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Ben%20Brahim"> Ammar Ben Brahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present paper, we investigate the feasibility of a thermal solar driven cold room in Gabes, southern region of Tunisia. The cold room of 109 m<sup>3</sup> is refrigerated using an ammonia absorption machine. It is destined to preserve dates during the hot months of the year. A detailed study of the cold room leads previously to the estimation of the cooling load of the proposed storage room in the operating conditions of the region. The next step consists of the estimation of the required heat in the generator of the absorption machine to ensure the desired cold temperature. A thermodynamic analysis was accomplished and complete description of the system is determined. We propose, here, to provide the needed heat thermally from the sun by using vacuum tube collectors. We found that at least 21m² of solar collectors are necessary to accomplish the work of the solar cold room. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=absorption" title="absorption">absorption</a>, <a href="https://publications.waset.org/abstracts/search?q=ammonia" title=" ammonia"> ammonia</a>, <a href="https://publications.waset.org/abstracts/search?q=cold%20room" title=" cold room"> cold room</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20collector" title=" solar collector"> solar collector</a>, <a href="https://publications.waset.org/abstracts/search?q=vacuum%20tube" title=" vacuum tube"> vacuum tube</a> </p> <a href="https://publications.waset.org/abstracts/99221/performance-of-an-absorption-refrigerator-using-a-solar-thermal-collector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/99221.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">174</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">17955</span> Airborne Molecular Contamination in Clean Room Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=T.%20Rajam%C3%A4ki">T. Rajamäki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In clean room environment molecular contamination in very small concentrations can cause significant harm for the components and processes. This is commonly referred as airborne molecular contamination (AMC). There is a shortage of high sensitivity continuous measurement data for existence and behavior of several of these contaminants. Accordingly, in most cases correlation between concentration of harmful molecules and their effect on processes is not known. In addition, the formation and distribution of contaminating molecules are unclear. In this work sensitive optical techniques are applied in clean room facilities for investigation of concentrations, forming mechanisms and effects of contaminating molecules. Special emphasis is on reactive acid and base gases ammonia (NH3) and hydrogen fluoride (HF). They are the key chemicals in several operations taking place in clean room processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AMC" title="AMC">AMC</a>, <a href="https://publications.waset.org/abstracts/search?q=clean%20room" title=" clean room"> clean room</a>, <a href="https://publications.waset.org/abstracts/search?q=concentration" title=" concentration"> concentration</a>, <a href="https://publications.waset.org/abstracts/search?q=reactive%20gas" title=" reactive gas"> reactive gas</a> </p> <a href="https://publications.waset.org/abstracts/44284/airborne-molecular-contamination-in-clean-room-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44284.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">281</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">17954</span> Effect of Acoustical Performance Detection and Evaluation in Music Practice Rooms on Teaching</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hsu-Hui%20Cheng">Hsu-Hui Cheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Peng-Chian%20Chen"> Peng-Chian Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Shu-Yuan%20Chang"> Shu-Yuan Chang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jie-Ying%20Zhang"> Jie-Ying Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Activities in the music practice rooms range from playing, listening, rehearsing to music performing. The good room acoustics in a music practice room enables a music teacher to teach more effectively subtle concepts such as intonation, articulation, balance, dynamics and tone production. A poor acoustical environment would deeply affect the development of basic musical skills of music students. Practicing in the music practice room is an essential daily activity for music students; consequently, music practice rooms are very important facilities in a music school or department. The purpose of this survey is to measure and analyze the acoustic condition of piano practice rooms at the department of music in Zhaoqing University and accordingly apply a more effective teaching method to music students. The volume of the music practice room is approximately 25 m³, and it has existing curtains and some wood hole sound-absorbing panels. When all small music practice rooms are in constant use for teaching, it was found that the values of the background noise at 45, 46, 42, 46, 45 dB(A) in the small music practice room ( the doors and windows were close), respectively. The noise levels in the small music practice room to higher than standard levels (35dB(A)). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustical%20performance" title="acoustical performance">acoustical performance</a>, <a href="https://publications.waset.org/abstracts/search?q=music%20practice%20room" title=" music practice room"> music practice room</a>, <a href="https://publications.waset.org/abstracts/search?q=noise%20level" title=" noise level"> noise level</a>, <a href="https://publications.waset.org/abstracts/search?q=piano%20room" title=" piano room"> piano room</a> </p> <a href="https://publications.waset.org/abstracts/138088/effect-of-acoustical-performance-detection-and-evaluation-in-music-practice-rooms-on-teaching" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138088.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">226</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">17953</span> Evaluation and Analysis of Light Emitting Diode Distribution in an Indoor Visible Light Communication</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Olawale%20J.%20Olaluyi">Olawale J. Olaluyi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ayodele%20S.%20Oluwole"> Ayodele S. Oluwole</a>, <a href="https://publications.waset.org/abstracts/search?q=O.%20Akinsanmi"> O. Akinsanmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Johnson%20O.%20Adeogo"> Johnson O. Adeogo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Communication using visible light VLC is considered a cutting-edge technology used for data transmission and illumination since it uses less energy than radio frequency (RF) technology and has a large bandwidth, extended lifespan, and high security. The room's irregular distribution of small base stations, or LED array distribution, is the cause of the obscured area, minimum signal-to-noise ratio (SNR), and received power. In order to maximize the received power distribution and SNR at the center of the room for an indoor VLC system, the researchers offer an innovative model for the placement of eight LED array distributions in this work. We have investigated the arrangement of the LED array distribution with regard to receiving power to fill the open space in the center of the room. The suggested LED array distribution saved 36.2% of the transmitted power, according to the simulation findings. Aside from that, the entire room was equally covered. This leads to an increase in both received power and SNR. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=visible%20light%20communication%20%28VLC%29" title="visible light communication (VLC)">visible light communication (VLC)</a>, <a href="https://publications.waset.org/abstracts/search?q=light%20emitted%20diodes%20%28LED%29" title=" light emitted diodes (LED)"> light emitted diodes (LED)</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20power%20distribution" title=" optical power distribution"> optical power distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=signal-to-noise%20ratio%20%28SNR%29." title=" signal-to-noise ratio (SNR)."> signal-to-noise ratio (SNR).</a> </p> <a href="https://publications.waset.org/abstracts/177852/evaluation-and-analysis-of-light-emitting-diode-distribution-in-an-indoor-visible-light-communication" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/177852.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">17952</span> Thermal and Acoustic Design of Mobile Hydraulic Vehicle Engine Room</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Homin%20Kim">Homin Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyungjo%20Byun"> Hyungjo Byun</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinyoung%20Do"> Jinyoung Do</a>, <a href="https://publications.waset.org/abstracts/search?q=Yongil%20Lee"> Yongil Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyunho%20Shin"> Hyunho Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=Seungbae%20Lee"> Seungbae Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Engine room of mobile hydraulic vehicle is densely packed with an engine and many hydraulic components mostly generating heat and sound. Though hydraulic oil cooler, ATF cooler, and axle oil cooler etc. are added to vehicle cooling system of mobile vehicle, the overheating may cause downgraded performance and frequent failures. In order to improve thermal and acoustic environment of engine room, the computational approaches by Computational Fluid Dynamics (CFD) and Boundary Element Method (BEM) are used together with necessary modal analysis of belt-driven system. The engine room design layout and process, which satisfies the design objectives of sound power level and temperature levels of radiator water, charged air cooler, transmission and hydraulic oil coolers, is discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustics" title="acoustics">acoustics</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=engine%20room%20design" title=" engine room design"> engine room design</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20hydraulics" title=" mobile hydraulics"> mobile hydraulics</a> </p> <a href="https://publications.waset.org/abstracts/61957/thermal-and-acoustic-design-of-mobile-hydraulic-vehicle-engine-room" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61957.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">326</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">17951</span> Microbiological Assessment of Fish Sausages Coated with Smoked-Edible Film, and Stored in Room and Refrigerator Temperatures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Henny%20A.%20Dien">Henny A. Dien</a>, <a href="https://publications.waset.org/abstracts/search?q=Roike%20I.%20Montolalu"> Roike I. Montolalu</a>, <a href="https://publications.waset.org/abstracts/search?q=Feny%20Mentang"> Feny Mentang</a>, <a href="https://publications.waset.org/abstracts/search?q=Jupni%20Keno"> Jupni Keno</a>, <a href="https://publications.waset.org/abstracts/search?q=Reynerd%20S.%20Burdam"> Reynerd S. Burdam</a>, <a href="https://publications.waset.org/abstracts/search?q=Siegfried%20Berhimpon"> Siegfried Berhimpon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fish Sausages became popular nowadays, because of high nutritious and low in cholesterol. However, this food is also highly perishable and often contaminated by pathogen bacteria. Edible film was made from myofibril of Black Marlin (Makaira indica) waste, with addition of liquid smoke 0.8%. The aim of this study were to determine the TPC, total coliform and Escherichia coli in fish sausages coated with smoked edible film, and stored in room temperature (26-29oC), and refrigerator (5-10oC). Results shown that TPC in fish sausages coated with smoked edible film were lower than that of without coated, both for storage in room temperature and in refrigerator. Total coliform in coated with smoked edible film and stored in room temperature ranged between 7-120 MPN/g (1-4 days), while stored in refrigerator ranged between 7-93 MPN/g (1-6 days); while fish sausages coated with edible film without liquid smoke were 7-240 MPN/g (1-4 days) in room temperature, and 7-150 MPN/g in refrigerator. Total E. coli of fish sausages coated with smoked edible film and stored in room temperature ranged between 3-4 MPN/g (1-4 days), while stored in refrigerator ranged were 3 MPN/g (1-6 days); while fish sausages coated with edible film without smoked both stored in room temperature and in refrigerator, shown total E. coli 3 MPN/g during 4 days in room temperature, and 6 days in refrigerator. Total E. coli of sausages without coated stored in room temperature ranged between 7-24 MPN/g, and that of stored in refrigerator ranged between 3-4 MPN/g. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=smoke%20liquid" title="smoke liquid">smoke liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=edible%20film" title=" edible film"> edible film</a>, <a href="https://publications.waset.org/abstracts/search?q=coating" title=" coating"> coating</a>, <a href="https://publications.waset.org/abstracts/search?q=sausages" title=" sausages"> sausages</a> </p> <a href="https://publications.waset.org/abstracts/33011/microbiological-assessment-of-fish-sausages-coated-with-smoked-edible-film-and-stored-in-room-and-refrigerator-temperatures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33011.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">449</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">17950</span> Efficiency and Scale Elasticity in Network Data Envelopment Analysis: An Application to International Tourist Hotels in Taiwan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Li-Hsueh%20Chen">Li-Hsueh Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Efficient operation is more and more important for managers of hotels. Unlike the manufacturing industry, hotels cannot store their products. In addition, many hotels provide room service, and food and beverage service simultaneously. When efficiencies of hotels are evaluated, the internal structure should be considered. Hence, based on the operational characteristics of hotels, this study proposes a DEA model to simultaneously assess the efficiencies among the room production division, food and beverage production division, room service division and food and beverage service division. However, not only the enhancement of efficiency but also the adjustment of scale can improve the performance. In terms of the adjustment of scale, scale elasticity or returns to scale can help to managers to make decisions concerning expansion or contraction. In order to construct a reasonable approach to measure the efficiencies and scale elasticities of hotels, this study builds an alternative variable-returns-to-scale-based two-stage network DEA model with the combination of parallel and series structures to explore the scale elasticities of the whole system, room production division, food and beverage production division, room service division and food and beverage service division based on the data of international tourist hotel industry in Taiwan. The results may provide valuable information on operational performance and scale for managers and decision makers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=efficiency" title="efficiency">efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=scale%20elasticity" title=" scale elasticity"> scale elasticity</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20data%20envelopment%20analysis" title=" network data envelopment analysis"> network data envelopment analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=international%20tourist%20hotel" title=" international tourist hotel"> international tourist hotel</a> </p> <a href="https://publications.waset.org/abstracts/44908/efficiency-and-scale-elasticity-in-network-data-envelopment-analysis-an-application-to-international-tourist-hotels-in-taiwan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44908.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">225</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">17949</span> Numerical Investigation of Indoor Environmental Quality in a Room Heated with Impinging Jet Ventilation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mathias%20Cehlin">Mathias Cehlin</a>, <a href="https://publications.waset.org/abstracts/search?q=Arman%20Ameen"> Arman Ameen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ulf%20Larsson"> Ulf Larsson</a>, <a href="https://publications.waset.org/abstracts/search?q=Taghi%20Karimipanah"> Taghi Karimipanah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The indoor environmental quality (IEQ) is increasingly recognized as a significant factor influencing the overall level of building occupants’ health, comfort and productivity. An air-conditioning and ventilation system is normally used to create and maintain good thermal comfort and indoor air quality. Providing occupant thermal comfort and well-being with minimized use of energy is the main purpose of heating, ventilating and air conditioning system. Among different types of ventilation systems, the most widely known and used ventilation systems are mixing ventilation (MV) and displacement ventilation (DV). Impinging jet ventilation (IJV) is a promising ventilation strategy developed in the beginning of 2000s. IJV has the advantage of supplying air downwards close to the floor with high momentum and thereby delivering fresh air further out in the room compare to DV. Operating in cooling mode, IJV systems can have higher ventilation effectiveness and heat removal effectiveness compared to MV, and therefore a higher energy efficiency. However, how is the performance of IJV when operating in heating mode? This paper presents the function of IJV in a typical office room for winter conditions (heating mode). In this paper, a validated CFD model, which uses the v2-f model is used for the prediction of air flow pattern, thermal comfort and air change effectiveness. The office room under consideration has the dimensions 4.2×3.6×2.5m, which can be designed like a single-person or two-person office. A number of important factors influencing in the room with IJV are studied. The considered parameters are: heating demand, number of occupants and supplied air conditions. A total of 6 simulation cases are carried out to investigate the effects of the considered parameters. Heat load in the room is contributed by occupants, computer and lighting. The model consists of one external wall including a window. The interaction effects of heat sources, supply air flow and down draught from the window result in a complex flow phenomenon. Preliminary results indicate that IJV can be used for heating of a typical office room. The IEQ seems to be suitable in the occupied region for the studied cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computation%20fluid%20dynamics" title="computation fluid dynamics">computation fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=impinging%20jet%20ventilation" title=" impinging jet ventilation"> impinging jet ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=indoor%20environmental%20quality" title=" indoor environmental quality"> indoor environmental quality</a>, <a href="https://publications.waset.org/abstracts/search?q=ventilation%20strategy" title=" ventilation strategy"> ventilation strategy</a> </p> <a href="https://publications.waset.org/abstracts/96370/numerical-investigation-of-indoor-environmental-quality-in-a-room-heated-with-impinging-jet-ventilation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96370.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">179</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">17948</span> The Effect of Applying Surgical Safety Checklist on Surgical Team’s Knowledge and Performance in Operating Room</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Soheir%20Weheida">Soheir Weheida</a>, <a href="https://publications.waset.org/abstracts/search?q=Amal%20E.%20Shehata"> Amal E. Shehata</a>, <a href="https://publications.waset.org/abstracts/search?q=Samira%20E.%20Aboalizm"> Samira E. Aboalizm</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this study was to examine the effect of surgical safety checklist on surgical team’s knowledge and performance in operating room. Subjects: A convenience sample 151 (48 head nurse, 45 nurse, 37 surgeon and 21 anesthesiologist) which available in operating room at two different hospitals was included in the study. Setting: The study was carried out at operating room in Menoufia University and Shebin Elkom Teaching Hospitals, Egypt. Tools: I: Surgical safety: Surgical team knowledge assessment structure interview schedule. II: WHO surgical safety observational Checklist. III: Post Surgery Culture Survey scale. Results: There was statistical significant improvement of knowledge mean score and performance about surgical safety especially in post and follow up than pre intervention, before patients entering the operating, before induction of anesthesia, skin incision and post skin closure and before patient leaves operating room, P values (P < 0.001). Improvement of communication post intervention than pre intervention between surgical team’s (4.74 ± 0.540). About two thirds (73.5 %) of studied sample strongly agreed on surgical safety in operating room. Conclusions: Implementation of surgical safety checklist has a positive effect on improving knowledge, performance and communication between surgical teams and these seems to have a positive effect on improve patient safety in the operating room. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=knowledge" title="knowledge">knowledge</a>, <a href="https://publications.waset.org/abstracts/search?q=operating%20room" title=" operating room"> operating room</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a>, <a href="https://publications.waset.org/abstracts/search?q=surgical%20safety%20checklist" title=" surgical safety checklist "> surgical safety checklist </a> </p> <a href="https://publications.waset.org/abstracts/25275/the-effect-of-applying-surgical-safety-checklist-on-surgical-teams-knowledge-and-performance-in-operating-room" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25275.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">334</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">17947</span> Thermal Comfort and Energy Saving Evaluation of a Combined System in an Office Room Using Displacement Ventilation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Q.%20Ahmed">A. Q. Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Gao"> S. Gao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the energy saving and human thermal comfort in a typical office room are investigated. The impact of a combined system of exhaust inlet air with light slots located at the ceiling level in a room served by displacement ventilation system is numerically modelled. Previous experimental data are used to validate the computational fluid dynamic (CFD) model. A case study of simulated office room includes two seating occupants, two computers, two data loggers and four lamps. The combined system is located at the ceiling level above the heat sources. A new method of calculation for the cooling coil load in stratified air distribution (STRAD) system is used in this study. The results show that 47.4 % energy saving of space cooling load can be achieved by combing the exhaust inlet air with light slots at the ceiling level above the heat sources. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20conditioning" title="air conditioning">air conditioning</a>, <a href="https://publications.waset.org/abstracts/search?q=displacement%20ventilation" title=" displacement ventilation"> displacement ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20saving" title=" energy saving"> energy saving</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title=" thermal comfort"> thermal comfort</a> </p> <a href="https://publications.waset.org/abstracts/29206/thermal-comfort-and-energy-saving-evaluation-of-a-combined-system-in-an-office-room-using-displacement-ventilation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29206.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">483</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">17946</span> CFD Analysis of a Two-Sided Windcatcher Inlet/Outlet Ducts’ Height in Ventilation Flow through a Three Dimensional Room</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amirreza%20Niktash">Amirreza Niktash</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20P.%20Huynh"> B. P. Huynh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A windcatcher is a structure fitted on the roof of a building for providing natural ventilation by using wind power; it exhausts the inside stale air to the outside and supplies the outside fresh air into the interior space of the building working by pressure difference between outside and inside of the building and using ventilation principles of passive stacks and wind tower, respectively. In this paper, the effect of different heights of inlet/outlets’ ducts of a two-sided windcatcher on the flow rate, flow velocity and flow pattern through a three-dimensional room fitted with the windcatcher are investigated and analysed by using RANS CFD technique and applying standard K-ε turbulence model via a commercial computational fluid dynamics (CFD) software package. The achieved results show that the inlet/outlet ducts height strongly affects flow rate, flow velocity and flow pattern especially in the living area of the room when the wind velocity is not too low. The results are confirmed by the experimental test for constructed scaled model in the laboratory and it develops the two-sided windcatcher’s performance in ventilation applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD" title="CFD">CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=RANS" title=" RANS"> RANS</a>, <a href="https://publications.waset.org/abstracts/search?q=ventilation" title=" ventilation"> ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=windcatcher" title=" windcatcher"> windcatcher</a> </p> <a href="https://publications.waset.org/abstracts/18751/cfd-analysis-of-a-two-sided-windcatcher-inletoutlet-ducts-height-in-ventilation-flow-through-a-three-dimensional-room" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18751.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">429</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">17945</span> Computational Modeling of Thermal Comfort and CO2 Distribution in Common Room-Lecture Room by Using Hybrid Air Ventilation System, Thermoelectric-PV-Silica Gel under IAQ Standard</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jirod%20Chaisan">Jirod Chaisan</a>, <a href="https://publications.waset.org/abstracts/search?q=Somchai%20Maneewan"> Somchai Maneewan</a>, <a href="https://publications.waset.org/abstracts/search?q=Chantana%20Punlek"> Chantana Punlek</a>, <a href="https://publications.waset.org/abstracts/search?q=Ninnart%20Rachapradit"> Ninnart Rachapradit</a>, <a href="https://publications.waset.org/abstracts/search?q=Surapong%20Chirarattananon"> Surapong Chirarattananon</a>, <a href="https://publications.waset.org/abstracts/search?q=Pattana%20Rakkwamsuk"> Pattana Rakkwamsuk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, simulation modeling of heat transfer, air flow and distribution emitted from CO2 was performed in a regenerated air. The study room was divided in 3 types: common room, small lecture room and large lecture room under evaluated condition in two case: released and unreleased CO2 including of used hybrid air ventilation system for regenerated air under Thailand climate conditions. The carbon dioxide was located on the center of the room and released rate approximately 900-1200 ppm corresponded with indoor air quality standard (IAQs). The indoor air in the thermal comfort zone was calculated and simulated with the numerical method that using real data from the handbook guideline. The results of the study showed that in the case of hybrid air ventilation system explained thermal and CO2 distribution due to the system was adapted significantly in the comfort zone. The results showed that when CO2 released on the center of the other room, the CO2 high concentration in comfort zone so used hybrid air ventilation that decreased CO2 with regeneration air including of reduced temperature indoor. However, the study is simulation modeling and guideline only so the future should be the experiment of hybrid air ventilation system for evaluated comparison of the systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20ventilation" title="air ventilation">air ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=indoor%20air%20quality" title=" indoor air quality"> indoor air quality</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title=" thermal comfort"> thermal comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=thermoelectric" title=" thermoelectric"> thermoelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic" title=" photovoltaic"> photovoltaic</a>, <a href="https://publications.waset.org/abstracts/search?q=dehumidify" title=" dehumidify"> dehumidify</a> </p> <a href="https://publications.waset.org/abstracts/65566/computational-modeling-of-thermal-comfort-and-co2-distribution-in-common-room-lecture-room-by-using-hybrid-air-ventilation-system-thermoelectric-pv-silica-gel-under-iaq-standard" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65566.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">17944</span> Experimental Observation on Air-Conditioning Using Radiant Chilled Ceiling in Hot Humid Climate</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ashmin%20Aryal">Ashmin Aryal</a>, <a href="https://publications.waset.org/abstracts/search?q=Pipat%20Chaiwiwatworakul"> Pipat Chaiwiwatworakul</a>, <a href="https://publications.waset.org/abstracts/search?q=Surapong%20Chirarattananon"> Surapong Chirarattananon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Radiant chilled ceiling (RCC) has been perceived to save more energy and provide better thermal comfort than the traditional air conditioning system. However, its application has been rather limited by some reasons e.g., the scarce information about the thermal characteristic in the radiant room and the local climate influence on the system performance, etc. To bridge such gap, an office-like experiment room with a RCC was constructed in the hot and humid climate of Thailand. This paper presents exemplarily results from the RCC experiments to give an insight into the thermal environment in a radiant room and the cooling load associated to maintain the room's comfort condition. It gave a demonstration of the RCC system operation for its application to achieve thermal comfort in offices in a hot humid climate, as well. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiant%20chilled%20ceiling" title="radiant chilled ceiling">radiant chilled ceiling</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20comfort" title=" thermal comfort"> thermal comfort</a>, <a href="https://publications.waset.org/abstracts/search?q=cooling%20load" title=" cooling load"> cooling load</a>, <a href="https://publications.waset.org/abstracts/search?q=outdoor%20air%20unit" title=" outdoor air unit"> outdoor air unit</a> </p> <a href="https://publications.waset.org/abstracts/134085/experimental-observation-on-air-conditioning-using-radiant-chilled-ceiling-in-hot-humid-climate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134085.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">128</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">17943</span> The Effects of Spatial Dimensions and Relocation and Dimensions of Sound Absorbers in a Space on the Objective Parameters of Sound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Kavraz">Mustafa Kavraz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigated the differences in the objective parameters of sound depending on the changes in the lengths of the lateral surfaces of a space and on the replacement of the sound absorbers that are placed on these surfaces. To this end, three models of room were chosen. The widths and heights of these rooms were the same but the lengths of the rooms were changed. The smallest room was 8 m. wide and 10 m. long. The lengths of the other two rooms were 15 m. and 20 m. For each model, the differences in the objective parameters of sound were determined by keeping all the material in the space intact and by changing only the positions of the sound absorbers that were placed on the walls. The sound absorbers that were used on the walls were of two different sizes. The sound absorbers that were placed on the walls were 4 m and 8 m. long and story-height (3 m.). In all model room types, the sound absorbers were placed on the long walls in three different ways: at the end of the long walls where the long walls meet the front wall; at the end of the long walls where the long walls meet the back wall; and in the middle part of the long walls. Except for the specially placed sound absorbers, the ground, wall and ceiling surfaces were covered with three different materials. There were no constructional elements such as doors and windows on the walls. On the surfaces, the materials specified in the Odeon 10 material library were used as coating material. Linoleum was used as flooring material, painted plaster as wall coating material and gypsum boards as ceiling covering (2 layers with a total of 32 mm. thickness). These were preferred due to the fact that they are the commonly used materials for these purposes. This study investigated the differences in the objective parameters of sound depending on the changes in the lengths of the lateral surfaces of a space and on the replacement of the sound absorbers that are placed on these surfaces. To this end, three models of room were chosen. The widths and heights of these rooms were the same but the lengths of the rooms were changed. The smallest room was 8 m. wide and 10 m. long. The lengths of the other two rooms were 15 m. and 20 m. For each model, the differences in the objective parameters of sound were determined by keeping all the material in the space intact and by changing only the positions of the sound absorbers that were placed on the walls. The sound absorbers that were used on the walls were of two different sizes. The sound absorbers that were placed on the walls were 4 m and 8 m. long and story-height (3 m.). In all model room types, the sound absorbers were placed on the long walls in three different ways: at the end of the long walls where the long walls meet the front wall; at the end of the long walls where the long walls meet the back wall; and in the middle part of the long walls. Except for the specially placed sound absorbers, the ground, wall and ceiling surfaces were covered with three different materials. There were no constructional elements such as doors and windows on the walls. On the surfaces, the materials specified in the Odeon 10 material library were used as coating material. Linoleum was used as flooring material, painted plaster as wall coating material and gypsum boards as ceiling covering (2 layers with a total of 32 mm. thickness). These were preferred due to the fact that they are the commonly used materials for these purposes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sound%20absorber" title="sound absorber">sound absorber</a>, <a href="https://publications.waset.org/abstracts/search?q=room%20model" title=" room model"> room model</a>, <a href="https://publications.waset.org/abstracts/search?q=objective%20parameters%20of%20sound" title=" objective parameters of sound"> objective parameters of sound</a>, <a href="https://publications.waset.org/abstracts/search?q=jnd" title=" jnd"> jnd</a> </p> <a href="https://publications.waset.org/abstracts/35097/the-effects-of-spatial-dimensions-and-relocation-and-dimensions-of-sound-absorbers-in-a-space-on-the-objective-parameters-of-sound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35097.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">374</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">17942</span> Investigation of the Opinions and Recommendations of Participants Related to Operating Room Nursing Certified Course Program</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zehra%20Gencel%20Efe">Zehra Gencel Efe</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Susam%20Ozsay%C4%B1n"> Fatma Susam Ozsayın</a>, <a href="https://publications.waset.org/abstracts/search?q=Sat%C4%B1%20Tas"> Satı Tas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background and Aim: It is not possible to teach all the knowledge related to operating room nursing in the nursing education process. Certified courses are organized by the Ministry of Health to compensate the lack of postgraduate training and the theoretical and practical training needs of working nurses. In this study; It is aimed to investigate the participants’ opinions and recommendations attending the certified course of operating room nursing that organized in İKCU AtaturkTraining and Research Hospital. Method: Two operating room nursing courses were organized in 2016. The 1st Operating Room Nursing Certified Course Program was organized between March 07, 2016 and April 6, 2016and the 2nd Operating Room Nursing Certified Course Program was organized between 07 November 2016 - 06 December 2016 at the İKCU Ataturk Training and Research Hospital. The first program was accepted for 29 participants, the second program was accepted for 30 participants. In the collection of the data, the 'Operating Room Nursing Certified Training Program Evaluation Form', 'Operating Room Nursing Certified Training Program Theoretical Training Evaluation Form' were used. Three point Likert-type scale is used for responses in the 'Operating Room Nursing Certified Training Program Evaluation Form’ (1=verygood, 2=good, 3=poor). Data is collected in five areas related to training program, operation room practice, communication, responsibility, experiences of learning. Four point Likert-type scale is used for responses in the 'Operating Room Nursing Certified Training Program Theoretical Training Evaluation Form' (1=verysatisfied, 2=quitesatisfied, 3=satisfied, 4=dissatisfied). Data is collected in two areas include presentation and content. Data were analyzed with SPSS 16 program. Findings and Conclusion: It was found that 93,22% of participants were female in addition, 62,7% had bachelor degree. It was seen that 33,87% of the work group had 1-5 years of experience in their field. It was found that; 88% of trainees participating in the first group to the operating room nursing-certified course program stated the training program was very good, 12% of them stated the training program was good. Nobody was signed the ‘poor’ choice. 81% of the trainees who participated in the 2nd group to the operating room nursing-certified course program stated the training program was very good, 19% of them stated the training program was good. Nobody was signed the ‘poor’ choice. It was found that there was no meaningful difference between the achievement ratios of the trainees and the learning status of the trainees when compared with the t test in the groups with success level of the operating room nursing certified course program according to the learning status of the participants (p ˃ 0,05). The trainees noted that the course was satisfied with theoretical and practical steps but the support services (lunch, coffee breaks etc.) were in adequate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=certified%20courses" title="certified courses">certified courses</a>, <a href="https://publications.waset.org/abstracts/search?q=nursing%20certified%20courses" title=" nursing certified courses"> nursing certified courses</a>, <a href="https://publications.waset.org/abstracts/search?q=operating%20room%20nursing" title=" operating room nursing"> operating room nursing</a>, <a href="https://publications.waset.org/abstracts/search?q=training%20program" title=" training program"> training program</a> </p> <a href="https://publications.waset.org/abstracts/71643/investigation-of-the-opinions-and-recommendations-of-participants-related-to-operating-room-nursing-certified-course-program" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71643.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">215</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">17941</span> Study of the Stability of Underground Mines by Numerical Method: The Mine Chaabet El Hamra, Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nakache%20Radouane">Nakache Radouane</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Boukelloul"> M. Boukelloul</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Fredj"> M. Fredj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Method room and pillar sizes are key factors for safe mining and their recovery in open-stop mining. This method is advantageous due to its simplicity and requirement of little information to be used. It is probably the most representative method among the total load approach methods although it also remains a safe design method. Using a finite element software (PLAXIS 3D), analyses were carried out with an elasto-plastic model and comparisons were made with methods based on the total load approach. The results were presented as the optimization for improving the ore recovery rate while maintaining a safe working environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=room%20and%20pillar" title="room and pillar">room and pillar</a>, <a href="https://publications.waset.org/abstracts/search?q=mining" title=" mining"> mining</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20load%20approach" title=" total load approach"> total load approach</a>, <a href="https://publications.waset.org/abstracts/search?q=elasto-plastic" title=" elasto-plastic"> elasto-plastic</a> </p> <a href="https://publications.waset.org/abstracts/48348/study-of-the-stability-of-underground-mines-by-numerical-method-the-mine-chaabet-el-hamra-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48348.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">330</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">17940</span> Study on Natural Light Distribution Inside the Room by Using Sudare as an Outside Horizontal Blind in Tropical Country of Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Agus%20Hariyadi">Agus Hariyadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hiroatsu%20Fukuda"> Hiroatsu Fukuda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In tropical country like Indonesia, especially in Jakarta, most of the energy consumption on building is for the cooling system, the second one is from lighting electric consumption. One of the passive design strategy that can be done is optimizing the use of natural light from the sun. In this area, natural light is always available almost every day around the year. Natural light have many effect on building. It can reduce the need of electrical lighting but also increase the external load. Another thing that have to be considered in the use of natural light is the visual comfort from occupant inside the room. To optimize the effectiveness of natural light need some modification of façade design. By using external shading device, it can minimize the external load that introduces into the room, especially from direct solar radiation which is the 80 % of the external energy load that introduces into the building. It also can control the distribution of natural light inside the room and minimize glare in the perimeter zone of the room. One of the horizontal blind that can be used for that purpose is Sudare. It is traditional Japanese blind that have been used long time in Japanese traditional house especially in summer. In its original function, Sudare is used to prevent direct solar radiation but still introducing natural ventilation. It has some physical characteristics that can be utilize to optimize the effectiveness of natural light. In this research, different scale of Sudare will be simulated using EnergyPlus and DAYSIM simulation software. EnergyPlus is a whole building energy simulation program to model both energy consumption—for heating, cooling, ventilation, lighting, and plug and process loads—and water use in buildings, while DAYSIM is a validated, RADIANCE-based daylighting analysis software that models the annual amount of daylight in and around buildings. The modelling will be done in Ladybug and Honeybee plugin. These are two open source plugins for Grasshopper and Rhinoceros 3D that help explore and evaluate environmental performance which will directly be connected to EnergyPlus and DAYSIM engines. Using the same model will maintain the consistency of the same geometry used both in EnergyPlus and DAYSIM. The aims of this research is to find the best configuration of façade design which can reduce the external load from the outside of the building to minimize the need of energy for cooling system but maintain the natural light distribution inside the room to maximize the visual comfort for occupant and minimize the need of electrical energy consumption. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fa%C3%A7ade" title="façade">façade</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20light" title=" natural light"> natural light</a>, <a href="https://publications.waset.org/abstracts/search?q=blind" title=" blind"> blind</a>, <a href="https://publications.waset.org/abstracts/search?q=energy" title=" energy"> energy</a> </p> <a href="https://publications.waset.org/abstracts/48848/study-on-natural-light-distribution-inside-the-room-by-using-sudare-as-an-outside-horizontal-blind-in-tropical-country-of-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48848.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">345</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">17939</span> Calculation of Effective Masses and Curie Temperature of (Ga, Mn) as Diluted Magnetic Semiconductor from the Eight-band k.p Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khawlh%20A.%20Alzubaidi">Khawlh A. Alzubaidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Khadijah%20B.%20Alziyadi"> Khadijah B. Alziyadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Amor%20M.%20Alsayari"> Amor M. Alsayari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The discovery of a dilute magnetic semiconductor (DMS) in which ferromagnetism is carrier-mediated and persists above room temperature is a major step toward the implementation of spintronic devices for processing, transferring, and storing of information. Among the many types of DMS materials which have been investigated, Mn-doped GaAs has become one of the best candidates for technological application. However, despite major developments over the last few decades, the maximum Curie temperature (~200 K) remains well below room temperature. In this work, we have studied the effect of Mn content and strain on the GaMnAs effective masses of electron, heavy and light holes calculated in the different crystallographic direction. Also, the Curie temperature in the DMS GaMnAs alloy is determined. Compilation of GaMnAs band parameters have been carried out using the 8-band k.p model based on Lowdin perturbation theory where spin orbit, sp-d exchange interaction, and biaxial strain are taken into account. Our results show that effective masses, calculated along the different crystallographic directions, have a strong dependence on strain, ranging from -2% (tensile strain) to 2% (compressive strain), and Mn content increased from 1 to 5%. The Curie temperature is determined within the mean-field approach based on the Zener model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diluted%20magnetic%20semiconductors" title="diluted magnetic semiconductors">diluted magnetic semiconductors</a>, <a href="https://publications.waset.org/abstracts/search?q=k.p%20method" title=" k.p method"> k.p method</a>, <a href="https://publications.waset.org/abstracts/search?q=effective%20masses" title=" effective masses"> effective masses</a>, <a href="https://publications.waset.org/abstracts/search?q=curie%20temperature" title=" curie temperature"> curie temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=strain" title=" strain"> strain</a> </p> <a href="https://publications.waset.org/abstracts/162897/calculation-of-effective-masses-and-curie-temperature-of-ga-mn-as-diluted-magnetic-semiconductor-from-the-eight-band-kp-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162897.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">95</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">17938</span> Determining the Effectiveness of Radiation Shielding and Safe Time for Radiation Worker by Employing Monitoring of Accumulation Dose in the Operator Room of CT Scan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Risalatul%20Latifah">Risalatul Latifah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bunawas%20Bunawas"> Bunawas Bunawas</a>, <a href="https://publications.waset.org/abstracts/search?q=Lailatul%20Muqmiroh"> Lailatul Muqmiroh</a>, <a href="https://publications.waset.org/abstracts/search?q=Anggraini%20D.%20Sensusiati"> Anggraini D. Sensusiati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Along with the increasing frequency of the use of CT-Scan for radiodiagnostics purposes, it is necessary to study radiation protection. This study examined aspects of radiation protection of workers. This study tried using thermoluminescent dosimeter (TLD) for evaluating radiation shielding and estimating safe time for workers during CT Scan examination. Six TLDs were placed on door, wall, and window inside and outside of the CT Scan room for 1 month. By using TLD monitoring, it could be seen how much radiation was exposed in the operator room. The results showed the effective dose at door, window, and wall was respectively 0.04 mSv, 0.05 mSv, and 0.04 mSv. With these values, it could be evaluated the effectiveness of radiation shielding on doors, glass and walls were respectively 90.6%, 95.5%, and 92.2%. By applying the dose constraint and the estimation of the accumulated dose for one month, radiation workers were still safe to perform the irradiation for 180 patients. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CT%20scan%20room" title="CT scan room">CT scan room</a>, <a href="https://publications.waset.org/abstracts/search?q=TLD" title=" TLD"> TLD</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20worker" title=" radiation worker"> radiation worker</a>, <a href="https://publications.waset.org/abstracts/search?q=dose%20constraint" title=" dose constraint"> dose constraint</a> </p> <a href="https://publications.waset.org/abstracts/63239/determining-the-effectiveness-of-radiation-shielding-and-safe-time-for-radiation-worker-by-employing-monitoring-of-accumulation-dose-in-the-operator-room-of-ct-scan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63239.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">288</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">17937</span> An Enhanced Room Temperature Magnetic Refrigerator Based on Nanofluid: From Theoretical Study to Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moulay%20Youssef%20El%20Hafidi">Moulay Youssef El Hafidi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, an enhanced room-temperature magnetic refrigerator based on nanofluid, consisting of permanent magnets as a magnetism source, gadolinium as magnetocaloric material, water as base liquid, and carbon nanotubes (CNT) as nanoparticles, has been designed. The magnetic field is supplied by NdFeB permanent magnets and is about 1.3 Tesla. Two similar heat exchangers are employed to absorb and expel heat. The cycle performance of this self-designed device is analyzed theoretically. The results provide useful data for future optimization of room-temperature magnetic refrigeration using nanofluids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20cooling" title="magnetic cooling">magnetic cooling</a>, <a href="https://publications.waset.org/abstracts/search?q=nanofluid" title=" nanofluid"> nanofluid</a>, <a href="https://publications.waset.org/abstracts/search?q=gadolinium" title=" gadolinium"> gadolinium</a>, <a href="https://publications.waset.org/abstracts/search?q=permanent%20magnets" title=" permanent magnets"> permanent magnets</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20exchange" title=" heat exchange"> heat exchange</a> </p> <a href="https://publications.waset.org/abstracts/164794/an-enhanced-room-temperature-magnetic-refrigerator-based-on-nanofluid-from-theoretical-study-to-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/164794.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">82</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">17936</span> Two-Phase Flow Study of Airborne Transmission Control in Dental Practices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mojtaba%20Zabihi">Mojtaba Zabihi</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephen%20Munro"> Stephen Munro</a>, <a href="https://publications.waset.org/abstracts/search?q=Jonathan%20Little"> Jonathan Little</a>, <a href="https://publications.waset.org/abstracts/search?q=Ri%20Li"> Ri Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Joshua%20Brinkerhoff"> Joshua Brinkerhoff</a>, <a href="https://publications.waset.org/abstracts/search?q=Sina%20Kheirkhah"> Sina Kheirkhah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Occupational Safety and Health Administration (OSHA) identified dental workers at the highest risk of contracting COVID-19. This is because aerosol-generating procedures (AGP) during dental practices generate aerosols ( < 5µm) and droplets. These particles travel at varying speeds, in varying directions, and for varying durations. If these particles bear infectious viruses, their spreading causes airborne transmission of the virus in the dental room, exposing dentists, hygienists, dental assistants, and even other dental clinic clients to the infection risk. Computational fluid dynamics (CFD) simulation of two-phase flows based on a discrete phase model (DPM) is carried out to study the spreading of aerosol and droplets in a dental room. The simulation includes momentum, heat, and mass transfers between the particles and the airflow. Two simulations are conducted and compared. One simulation focuses on the effects of room ventilation in winter and summer on the particles' travel. The other simulation focuses on the control of aerosol and droplets' spreading. A suction collector is added near the source of aerosol and droplets, creating a flow sink in order to remove the particles. The effects of the suction flow on the aerosol and droplet travel are studied. The suction flow can remove aerosols and also reduce the spreading of droplets. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerosols" title="aerosols">aerosols</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19" title=" COVID-19"> COVID-19</a>, <a href="https://publications.waset.org/abstracts/search?q=dental" title=" dental"> dental</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20phase%20model" title=" discrete phase model"> discrete phase model</a>, <a href="https://publications.waset.org/abstracts/search?q=droplets" title=" droplets"> droplets</a>, <a href="https://publications.waset.org/abstracts/search?q=two-phase%20flow" title=" two-phase flow"> two-phase flow</a> </p> <a href="https://publications.waset.org/abstracts/130160/two-phase-flow-study-of-airborne-transmission-control-in-dental-practices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130160.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">17935</span> A Model for Operating Rooms Scheduling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jose%20Francisco%20Ferreira%20Ribeiro">Jose Francisco Ferreira Ribeiro</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandre%20Bevilacqua%20Leoneti"> Alexandre Bevilacqua Leoneti</a>, <a href="https://publications.waset.org/abstracts/search?q=Andre%20Lucirton%20Costa"> Andre Lucirton Costa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a mathematical model in binary variables 0/1 to make the assignment of surgical procedures to the operating rooms in a hospital. The proposed mathematical model is based on the generalized assignment problem, which maximizes the sum of preferences for the use of the operating rooms by doctors, respecting the time available in each room. The corresponding program was written in Visual Basic of Microsoft Excel, and tested to schedule surgeries at St. Lydia Hospital in Ribeirao Preto, Brazil. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=generalized%20assignment%20problem" title="generalized assignment problem">generalized assignment problem</a>, <a href="https://publications.waset.org/abstracts/search?q=logistics" title=" logistics"> logistics</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=scheduling" title=" scheduling"> scheduling</a> </p> <a href="https://publications.waset.org/abstracts/70814/a-model-for-operating-rooms-scheduling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70814.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">292</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">17934</span> Dose Evaluations with SNAP/RADTRAD for Loss of Coolant Accidents in a BWR6 Nuclear Power Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kai%20Chun%20Yang">Kai Chun Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Shao-Wen%20Chen"> Shao-Wen Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong-Rong%20Wang"> Jong-Rong Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Chunkuan%20Shih"> Chunkuan Shih</a>, <a href="https://publications.waset.org/abstracts/search?q=Jung-Hua%20Yang"> Jung-Hua Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsiung-Chih%20Chen"> Hsiung-Chih Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Wen-Sheng%20Hsu"> Wen-Sheng Hsu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, we build RADionuclide Transport, Removal And Dose Estimation/Symbolic Nuclear Analysis Package (SNAP/RADTRAD) model of Kuosheng Nuclear Power Plant which is based on the Final Safety Evaluation Report (FSAR) and other data of Kuosheng Nuclear Power Plant. It is used to estimate the radiation dose of the Exclusion Area Boundary (EAB), the Low Population Zone (LPZ), and the control room following ‘release from the containment’ case in Loss Of Coolant Accident (LOCA). The RADTRAD analysis result shows that the evaluation dose at EAB, LPZ, and the control room are close to the FSAR data, and all of the doses are lower than the regulatory limits. At last, we do a sensitivity analysis and observe that the evaluation doses increase as the intake rate of the control room increases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=RADTRAD" title="RADTRAD">RADTRAD</a>, <a href="https://publications.waset.org/abstracts/search?q=radionuclide%20transport" title=" radionuclide transport"> radionuclide transport</a>, <a href="https://publications.waset.org/abstracts/search?q=removal%20and%20dose%20estimation" title=" removal and dose estimation"> removal and dose estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=snap" title=" snap"> snap</a>, <a href="https://publications.waset.org/abstracts/search?q=symbolic%20nuclear%20analysis%20package" title=" symbolic nuclear analysis package"> symbolic nuclear analysis package</a>, <a href="https://publications.waset.org/abstracts/search?q=boiling%20water%20reactor" title=" boiling water reactor"> boiling water reactor</a>, <a href="https://publications.waset.org/abstracts/search?q=NPP" title=" NPP"> NPP</a>, <a href="https://publications.waset.org/abstracts/search?q=kuosheng" title=" kuosheng"> kuosheng</a> </p> <a href="https://publications.waset.org/abstracts/92352/dose-evaluations-with-snapradtrad-for-loss-of-coolant-accidents-in-a-bwr6-nuclear-power-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92352.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">343</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">17933</span> Engineering Method to Measure the Impact Sound Improvement with Floor Coverings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Katarzyna%20Baruch">Katarzyna Baruch</a>, <a href="https://publications.waset.org/abstracts/search?q=Agata%20Szelag"> Agata Szelag</a>, <a href="https://publications.waset.org/abstracts/search?q=Jaroslaw%20Rubacha"> Jaroslaw Rubacha</a>, <a href="https://publications.waset.org/abstracts/search?q=Bartlomiej%20Chojnacki"> Bartlomiej Chojnacki</a>, <a href="https://publications.waset.org/abstracts/search?q=Tadeusz%20Kamisinski"> Tadeusz Kamisinski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Methodology used to measure the reduction of transmitted impact sound by floor coverings situated on a massive floor is described in ISO 10140-3: 2010. To carry out such tests, the standardised reverberation room separated by a standard floor from the second measuring room are required. The need to have a special laboratory results in high cost and low accessibility of this measurement. The authors propose their own engineering method to measure the impact sound improvement with floor coverings. This method does not require standard rooms and floor. This paper describes the measurement procedure of proposed engineering method. Further, verification tests were performed. Validation of the proposed method was based on the analytical model, Statistical Energy Analysis (SEA) model and empirical measurements. The received results were related to corresponding ones obtained from ISO 10140-3:2010 measurements. The study confirmed the usefulness of the engineering method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=building%20acoustic" title="building acoustic">building acoustic</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20noise" title=" impact noise"> impact noise</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20sound%20insulation" title=" impact sound insulation"> impact sound insulation</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20sound%20transmission" title=" impact sound transmission"> impact sound transmission</a>, <a href="https://publications.waset.org/abstracts/search?q=reduction%20of%20impact%20sound" title=" reduction of impact sound"> reduction of impact sound</a> </p> <a href="https://publications.waset.org/abstracts/78691/engineering-method-to-measure-the-impact-sound-improvement-with-floor-coverings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78691.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">324</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=room%20model&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=room%20model&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=room%20model&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=room%20model&page=5">5</a></li> <li class="page-item"><a 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