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based design</title> <meta name="description" content="Search results for: performance based design"> <meta name="keywords" content="performance based design"> <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 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action="https://publications.waset.org/abstracts/search"> <div 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="performance based design"> <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> 41926</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: performance based design</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41926</span> Direct Displacement-Based Design Procedure for Performance-Based Seismic Design of Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haleh%20Hamidpour">Haleh Hamidpour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since the seismic damageability of structures is controlled by the inelastic deformation capacities of structural elements, seismic design of structure based on force analogy methods is not appropriate. In recent year, the basic approach of design codes have been changed from force-based approach to displacement-based. In this regard, a Direct Displacement-Based Design (DDBD) and a Performance-Based Plastic Design (PBPD) method are proposed. In this study, the efficiency of these two methods on seismic performance of structures is evaluated through a sample 12-story reinforced concrete moment frame. The building is designed separately based on the DDBD and the PBPD methods. Once again the structure is designed by the traditional force analogy method according to the FEMA P695 regulation. Different design method results in different structural elements. Seismic performance of these three structures is evaluated through nonlinear static and nonlinear dynamic analysis. The results show that the displacement-based design methods accommodate the intended performance objectives better than the traditional force analogy method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=direct%20performance-based%20design" title="direct performance-based design">direct performance-based design</a>, <a href="https://publications.waset.org/abstracts/search?q=ductility%20demands" title=" ductility demands"> ductility demands</a>, <a href="https://publications.waset.org/abstracts/search?q=inelastic%20seismic%20performance" title=" inelastic seismic performance"> inelastic seismic performance</a>, <a href="https://publications.waset.org/abstracts/search?q=yield%20mechanism" title=" yield mechanism"> yield mechanism</a> </p> <a href="https://publications.waset.org/abstracts/51079/direct-displacement-based-design-procedure-for-performance-based-seismic-design-of-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51079.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">333</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">41925</span> A Study on Fire Safety Standards through Case Study of Performance Based Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kyung%20Hoon%20Park">Kyung Hoon Park</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyung%20Jun%20Kim"> Hyung Jun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jong%20Wook%20Song"> Jong Wook Song</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Super-tall building, large-scale and multi-purpose underground spaces reflect changes in construction trend. As current laws and codes such as Fire Services Act and construction codes are not enough to secure the fire safety of those structures and spaces, it is required to provide systemic supplement for performance-based design to establish or revise laws and technical standards to cope with the changes flexibly. In this study, the performance-based design standards of structures designed in Korea are compared with specification based design standards in an attempt to find the ways to establish fire safety standards for structures in Korea. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=performance%20based%20design" title="performance based design">performance based design</a>, <a href="https://publications.waset.org/abstracts/search?q=specification%20based%20design" title=" specification based design"> specification based design</a>, <a href="https://publications.waset.org/abstracts/search?q=fire%20safety%20design" title=" fire safety design"> fire safety design</a>, <a href="https://publications.waset.org/abstracts/search?q=life%20safety" title=" life safety"> life safety</a> </p> <a href="https://publications.waset.org/abstracts/50437/a-study-on-fire-safety-standards-through-case-study-of-performance-based-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50437.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">375</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">41924</span> Using Building Information Modeling in Green Building Design and Performance Optimization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Moataz%20M.%20Hamed">Moataz M. Hamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Khalid%20S.%20M.%20Al%20Hagla"> Khalid S. M. Al Hagla</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeyad%20El%20Sayad"> Zeyad El Sayad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Thinking in design energy-efficiency and high-performance green buildings require a different design mechanism and design approach than conventional buildings to achieve more sustainable result. By reasoning about specific issues at the correct time in the design process, the design team can minimize negative impacts, maximize building performance and keep both first and operation costs low. This paper attempts to investigate and exploit the sustainable dimension of building information modeling (BIM) in designing high-performance green buildings that require less energy for operation, emit less carbon dioxide and provide a conducive indoor environment for occupants through early phases of the design process. This objective was attained by a critical and extensive literature review that covers the following issues: the value of considering green strategies in the early design stage, green design workflow, and BIM-based performance analysis. Then the research proceeds with a case study that provides an in-depth comparative analysis of building performance evaluation between an office building in Alexandria, Egypt that was designed by the conventional design process with the same building if taking into account sustainability consideration and BIM-based sustainable analysis integration early through the design process. Results prove that using sustainable capabilities of building information modeling (BIM) in early stages of the design process side by side with green design workflow promote buildings performance and sustainability outcome. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=BIM" title="BIM">BIM</a>, <a href="https://publications.waset.org/abstracts/search?q=building%20performance%20analysis" title=" building performance analysis"> building performance analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=BIM-based%20sustainable%20analysis" title=" BIM-based sustainable analysis"> BIM-based sustainable analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=green%20building%20design" title=" green building design"> green building design</a> </p> <a href="https://publications.waset.org/abstracts/76735/using-building-information-modeling-in-green-building-design-and-performance-optimization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76735.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">41923</span> Performance Based Design of Masonry Infilled Reinforced Concrete Frames for Near-Field Earthquakes Using Energy Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alok%20Madan">Alok Madan</a>, <a href="https://publications.waset.org/abstracts/search?q=Arshad%20K.%20Hashmi"> Arshad K. Hashmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Performance based design (PBD) is an iterative exercise in which a preliminary trial design of the building structure is selected and if the selected trial design of the building structure does not conform to the desired performance objective, the trial design is revised. In this context, development of a fundamental approach for performance based seismic design of masonry infilled frames with minimum number of trials is an important objective. The paper presents a plastic design procedure based on the energy balance concept for PBD of multi-story multi-bay masonry infilled reinforced concrete (R/C) frames subjected to near-field earthquakes. The proposed energy based plastic design procedure was implemented for trial performance based seismic design of representative masonry infilled reinforced concrete frames with various practically relevant distributions of masonry infill panels over the frame elevation. Non-linear dynamic analyses of the trial PBD of masonry infilled R/C frames was performed under the action of near-field earthquake ground motions. The results of non-linear dynamic analyses demonstrate that the proposed energy method is effective for performance based design of masonry infilled R/C frames under near-field as well as far-field earthquakes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=masonry%20infilled%20frame" title="masonry infilled frame">masonry infilled frame</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20methods" title=" energy methods"> energy methods</a>, <a href="https://publications.waset.org/abstracts/search?q=near-fault%20ground%20motions" title=" near-fault ground motions"> near-fault ground motions</a>, <a href="https://publications.waset.org/abstracts/search?q=pushover%20analysis" title=" pushover analysis"> pushover analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20dynamic%20analysis" title=" nonlinear dynamic analysis"> nonlinear dynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=seismic%20demand" title=" seismic demand"> seismic demand</a> </p> <a href="https://publications.waset.org/abstracts/10308/performance-based-design-of-masonry-infilled-reinforced-concrete-frames-for-near-field-earthquakes-using-energy-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10308.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">41922</span> Seismic Performance of Concrete Moment Resisting Frames in Western Canada</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Naghshineh">Ali Naghshineh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashutosh%20Bagchi"> Ashutosh Bagchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Performance-based seismic design concepts are increasingly being adopted in various jurisdictions. While the National Building Code of Canada (NBCC) is not fully performance-based, it provides some features of a performance-based code, such as displacement control and objective-based solutions. Performance evaluation is an important part of a performance-based design. In this paper, the seismic performance of a set of code-designed 4, 8 and 12 story moment resisting concrete frames located in Victoria, BC, in the western part of Canada at different hazard levels namely, SLE (Service Level Event), DLE (Design Level Event) and MCE (Maximum Considered Event) has been studied. The seismic performance of these buildings has been evaluated based on FEMA 356 and ATC 72 procedures, and the nonlinear time history analysis. Pushover analysis has been used to investigate the different performance levels of these buildings and adjust their design based on the corresponding target displacements. Since pushover analysis ignores the higher mode effects, nonlinear dynamic time history using a set of ground motion records has been performed. Different types of ground motion records, such as crustal and subduction earthquake records have been used for the dynamic analysis to determine their effects. Results obtained from push over analysis on inter-story drift, displacement, shear and overturning moment are compared to those from the dynamic analysis. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=seismic%20performance." title="seismic performance.">seismic performance.</a>, <a href="https://publications.waset.org/abstracts/search?q=performance-based%20design" title=" performance-based design"> performance-based design</a>, <a href="https://publications.waset.org/abstracts/search?q=concrete%20moment%20resisting%20frame" title=" concrete moment resisting frame"> concrete moment resisting frame</a>, <a href="https://publications.waset.org/abstracts/search?q=crustal%20earthquakes" title=" crustal earthquakes"> crustal earthquakes</a>, <a href="https://publications.waset.org/abstracts/search?q=subduction%20earthquakes" title=" subduction earthquakes"> subduction earthquakes</a> </p> <a href="https://publications.waset.org/abstracts/67195/seismic-performance-of-concrete-moment-resisting-frames-in-western-canada" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67195.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">264</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">41921</span> A Study on Performance-Based Design Analysis for Vertical Extension of Apartment Units</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Minsun%20Kim">Minsun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ki-Sun%20Choi"> Ki-Sun Choi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyun-Jee%20Lee"> Hyun-Jee Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Young-Chan%20You"> Young-Chan You</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There is no reinforcement example for the renovation of the vertical and horizontal extension to existing building structures which is a shear wall type in apartment units in Korea. Among these existing structures, the structures which are shear wall type are rare overseas, while Korea has many shear wall apartment units. Recently, in Korea, a few researchers are trying to confirm the possibility of the vertical extension in existing building with shear walls. This study evaluates the possibility of the renovation by applying performance-based seismic design to existing buildings with shear walls in the analysis phase of the structure. In addition, force-based seismic design, used by general structural engineers in Korea, is carried out to compare the amount of reinforcement of walls, which is a main component of wall structure. As a result, we suggest that performance-based design obtains more economical advantages than force-based seismic design. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=design%20for%20extension" title="design for extension">design for extension</a>, <a href="https://publications.waset.org/abstracts/search?q=performance-based%20design" title=" performance-based design"> performance-based design</a>, <a href="https://publications.waset.org/abstracts/search?q=remodeling" title=" remodeling"> remodeling</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20wall%20frame" title=" shear wall frame"> shear wall frame</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20analysis" title=" structural analysis"> structural analysis</a> </p> <a href="https://publications.waset.org/abstracts/79730/a-study-on-performance-based-design-analysis-for-vertical-extension-of-apartment-units" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79730.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">41920</span> A Study on Performance Prediction in Early Design Stage of Apartment Housing Using Machine Learning</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seongjun%20Kim">Seongjun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Sanghoon%20Shim"> Sanghoon Shim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinwooung%20Kim"> Jinwooung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jaehwan%20Jung"> Jaehwan Jung</a>, <a href="https://publications.waset.org/abstracts/search?q=Sung-Ah%20Kim"> Sung-Ah Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As the development of information and communication technology, the convergence of machine learning of the ICT area and design is attempted. In this way, it is possible to grasp the correlation between various design elements, which was difficult to grasp, and to reflect this in the design result. In architecture, there is an attempt to predict the performance, which is difficult to grasp in the past, by finding the correlation among multiple factors mainly through machine learning. In architectural design area, some attempts to predict the performance affected by various factors have been tried. With machine learning, it is possible to quickly predict performance. The aim of this study is to propose a model that predicts performance according to the block arrangement of apartment housing through machine learning and the design alternative which satisfies the performance such as the daylight hours in the most similar form to the alternative proposed by the designer. Through this study, a designer can proceed with the design considering various design alternatives and accurate performances quickly from the early design stage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=apartment%20housing" title="apartment housing">apartment housing</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning" title=" machine learning"> machine learning</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-objective%20optimization" title=" multi-objective optimization"> multi-objective optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20prediction" title=" performance prediction"> performance prediction</a> </p> <a href="https://publications.waset.org/abstracts/80644/a-study-on-performance-prediction-in-early-design-stage-of-apartment-housing-using-machine-learning" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80644.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">481</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">41919</span> CO2 Emission and Cost Optimization of Reinforced Concrete Frame Designed by Performance Based Design Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jin%20Woo%20Hwang">Jin Woo Hwang</a>, <a href="https://publications.waset.org/abstracts/search?q=Byung%20Kwan%20Oh"> Byung Kwan Oh</a>, <a href="https://publications.waset.org/abstracts/search?q=Yousok%20Kim"> Yousok Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyo%20Seon%20Park"> Hyo Seon Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As greenhouse effect has been recognized as serious environmental problem of the world, interests in carbon dioxide (CO<sub>2</sub>) emission which comprises major part of greenhouse gas (GHG) emissions have been increased recently. Since construction industry takes a relatively large portion of total CO<sub>2 </sub>emissions of the world, extensive studies about reducing CO<sub>2 </sub>emissions in construction and operation of building have been carried out after the 2000s. Also, performance based design (PBD) methodology based on nonlinear analysis has been robustly developed after Northridge Earthquake in 1994 to assure and assess seismic performance of building more exactly because structural engineers recognized that prescriptive code based design approach cannot address inelastic earthquake responses directly and assure performance of building exactly. Although CO<sub>2 </sub>emissions and PBD approach are recent rising issues on construction industry and structural engineering, there were few or no researches considering these two issues simultaneously. Thus, the objective of this study is to minimize the CO<sub>2 </sub>emissions and cost of building designed by PBD approach in structural design stage considering structural materials. 4 story and 4 span reinforced concrete building optimally designed to minimize CO<sub>2 </sub>emissions and cost of building and to satisfy specific seismic performance (collapse prevention in maximum considered earthquake) of building satisfying prescriptive code regulations using non-dominated sorting genetic algorithm-II (NSGA-II). Optimized design result showed that minimized CO<sub>2 </sub>emissions and cost of building were acquired satisfying specific seismic performance. Therefore, the methodology proposed in this paper can be used to reduce both CO<sub>2 </sub>emissions and cost of building designed by PBD approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CO2%20emissions" title="CO2 emissions">CO2 emissions</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20based%20design" title=" performance based design"> performance based design</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20design" title=" sustainable design"> sustainable design</a> </p> <a href="https://publications.waset.org/abstracts/42942/co2-emission-and-cost-optimization-of-reinforced-concrete-frame-designed-by-performance-based-design-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42942.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">406</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">41918</span> Design of Reinforced Concrete (RC) Walls Considering Shear Amplification by Nonlinear Dynamic Behavior</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sunghyun%20Kim">Sunghyun Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Hong-Gun%20Park"> Hong-Gun Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the performance-based design (PBD), by using the nonlinear dynamic analysis (NDA), the actual performance of the structure is evaluated. Unlike frame structures, in the wall structures, base shear force which is resulted from the NDA, is greatly amplified than that from the elastic analysis. This shear amplifying effect causes repeated designs which make designer difficult to apply the PBD. Therefore, in this paper, factors which affect shear amplification were studied. For the 20-story wall model, the NDA was performed. From the analysis results, the base shear amplification factor was proposed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=performance%20based%20design" title="performance based design">performance based design</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20amplification%20factor" title=" shear amplification factor"> shear amplification factor</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20dynamic%20analysis" title=" nonlinear dynamic analysis"> nonlinear dynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=RC%20shear%20wall" title=" RC shear wall"> RC shear wall</a> </p> <a href="https://publications.waset.org/abstracts/60242/design-of-reinforced-concrete-rc-walls-considering-shear-amplification-by-nonlinear-dynamic-behavior" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60242.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">379</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">41917</span> Fiber Based Pushover Analysis of Reinforced Concrete Frame</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shewangizaw%20Tesfaye%20Wolde">Shewangizaw Tesfaye Wolde</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The current engineering community has developed a method called performance based seismic design in which we design structures based on predefined performance levels set by the parties. Since we design our structures economically for the maximum actions expected in the life of structures they go beyond their elastic limit, in need of nonlinear analysis. In this paper conventional pushover analysis (nonlinear static analysis) is used for the performance assessment of the case study Reinforced Concrete (RC) Frame building located in Addis Ababa City, Ethiopia where proposed peak ground acceleration value by RADIUS 1999 project and others is more than twice as of EBCS-8:1995 (RADIUS 1999 project) by taking critical planar frame. Fiber beam-column model is used to control material nonlinearity with tension stiffening effect. The reliability of the fiber model and validation of software outputs are checked under verification chapter. Therefore, the aim of this paper is to propose a way for structural performance assessment of existing reinforced concrete frame buildings as well as design check. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=seismic" title="seismic">seismic</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a>, <a href="https://publications.waset.org/abstracts/search?q=fiber%20model" title=" fiber model"> fiber model</a>, <a href="https://publications.waset.org/abstracts/search?q=tension%20stiffening" title=" tension stiffening"> tension stiffening</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforced%20concrete" title=" reinforced concrete"> reinforced concrete</a> </p> <a href="https://publications.waset.org/abstracts/178786/fiber-based-pushover-analysis-of-reinforced-concrete-frame" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/178786.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">77</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">41916</span> The Effect of Mathematical Modeling of Damping on the Seismic Energy Demands</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Selamawit%20Dires">Selamawit Dires</a>, <a href="https://publications.waset.org/abstracts/search?q=Solomon%20Tesfamariam"> Solomon Tesfamariam</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Tannert"> Thomas Tannert</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modern earthquake engineering and design encompass performance-based design philosophy. The main objective in performance-based design is to achieve a system performing precisely to meet the design objectives so to reduce unintended seismic risks and associated losses. Energy-based earthquake-resistant design is one of the design methodologies that can be implemented in performance-based earthquake engineering. In energy-based design, the seismic demand is usually described as the ratio of the hysteretic to input energy. Once the hysteretic energy is known as a percentage of the input energy, it is distributed among energy-dissipating components of a structure. The hysteretic to input energy ratio is highly dependent on the inherent damping of a structural system. In numerical analysis, damping can be modeled as stiffness-proportional, mass-proportional, or a linear combination of stiffness and mass. In this study, the effect of mathematical modeling of damping on the estimation of seismic energy demands is investigated by considering elastic-perfectly-plastic single-degree-of-freedom systems representing short to long period structures. Furthermore, the seismicity of Vancouver, Canada, is used in the nonlinear time history analysis. According to the preliminary results, the input energy demand is not sensitive to the type of damping models deployed. Hence, consistent results are achieved regardless of the damping models utilized in the numerical analyses. On the other hand, the hysteretic to input energy ratios vary significantly for the different damping models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=damping" title="damping">damping</a>, <a href="https://publications.waset.org/abstracts/search?q=energy-based%20seismic%20design" title=" energy-based seismic design"> energy-based seismic design</a>, <a href="https://publications.waset.org/abstracts/search?q=hysteretic%20energy" title=" hysteretic energy"> hysteretic energy</a>, <a href="https://publications.waset.org/abstracts/search?q=input%20energy" title=" input energy"> input energy</a> </p> <a href="https://publications.waset.org/abstracts/111458/the-effect-of-mathematical-modeling-of-damping-on-the-seismic-energy-demands" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/111458.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">168</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">41915</span> Design Improvement of Dental Implant-Based on Bone Remodelling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Solehuddin%20Shuib">Solehuddin Shuib</a>, <a href="https://publications.waset.org/abstracts/search?q=Koay%20Boon%20Aik"> Koay Boon Aik</a>, <a href="https://publications.waset.org/abstracts/search?q=Zainul%20Ahmad%20Rajion"> Zainul Ahmad Rajion</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There are many types of mechanical failure on the dental implant. In this project, the failure that needs to take into consideration is the bone resorption on the dental implant. Human bone has its ability to remodel after the implantation. As the dental implant is installed into the bone, the bone will detect and change the bone structure to achieve new biomechanical environment. This phenomenon is known as bone remodeling. The objective of the project is to improve the performance of dental implant by using different types of design. These designs are used to analyze and predict the failure of the dental implant by using finite element analysis (FEA) namely ANSYS. The bone is assumed to be fully attached to the implant or cement. Hence, results are then compared with other researchers. The results were presented in the form of Von Mises stress, normal stress, shear stress analysis, and displacement. The selected design will be analyzed further based on a theoretical calculation of bone remodeling on the dental implant. The results have shown that the design constructed passed the failure analysis. Therefore, the selected design is proven to have a stable performance at the recovery stage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dental%20implant" title="dental implant">dental implant</a>, <a href="https://publications.waset.org/abstracts/search?q=FEA" title=" FEA"> FEA</a>, <a href="https://publications.waset.org/abstracts/search?q=bone%20remodeling" title=" bone remodeling"> bone remodeling</a>, <a href="https://publications.waset.org/abstracts/search?q=design" title=" design"> design</a> </p> <a href="https://publications.waset.org/abstracts/19662/design-improvement-of-dental-implant-based-on-bone-remodelling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19662.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">501</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">41914</span> Comparing Two Non-Contact Squeeze Film Levitation Designs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Almurshedi">Ahmed Almurshedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mark%20Atherton"> Mark Atherton</a>, <a href="https://publications.waset.org/abstracts/search?q=Mares%20Cristinel"> Mares Cristinel</a>, <a href="https://publications.waset.org/abstracts/search?q=Tadeusz%20%20Stolarski"> Tadeusz Stolarski</a>, <a href="https://publications.waset.org/abstracts/search?q=Masaaki%20%20Miyatake"> Masaaki Miyatake</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transportation and handling of delicate and lightweight objects is a significant issue in some industries. Two levitation prototype designs, a horn transducer design and surface-mounted piezoelectric actuator vibrating plate design, are compared. Both designs are based on the method of squeeze-film levitation (SFL) and the aim of this study is to evaluate the characteristics and performance of each. To this end, physical experiments are conducted and are demonstrated that the horn-type transducer prototype design produces better levitation performance but it design complexity and operating characteristics make it less suitable than the vibrating plate design for practical applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=floating" title="floating">floating</a>, <a href="https://publications.waset.org/abstracts/search?q=levitation" title=" levitation"> levitation</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric" title=" piezoelectric"> piezoelectric</a>, <a href="https://publications.waset.org/abstracts/search?q=squeeze-film" title=" squeeze-film"> squeeze-film</a>, <a href="https://publications.waset.org/abstracts/search?q=transducer" title=" transducer"> transducer</a> </p> <a href="https://publications.waset.org/abstracts/92876/comparing-two-non-contact-squeeze-film-levitation-designs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92876.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">279</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">41913</span> Wind Velocity Mitigation for Conceptual Design: A Spatial Decision (Support Framework)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Khallaf">Mohamed Khallaf</a>, <a href="https://publications.waset.org/abstracts/search?q=Hossein%20M%20Rizeei"> Hossein M Rizeei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Simulating wind pattern behavior over proposed urban features is critical in the early stage of the conceptual design of both architectural and urban disciplines. However, it is typically not possible for designers to explore the impact of wind flow profiles across new urban developments due to a lack of real data and inaccurate estimation of building parameters. Modeling the details of existing and proposed urban features and testing them against wind flows is the missing part of the conceptual design puzzle where architectural and urban discipline can focus. This research aims to develop a spatial decision-support design method utilizing LiDAR, GIS, and performance-based wind simulation technology to mitigate wind-related hazards on a design by simulating alternative design scenarios at the pedestrian level prior to its implementation in Sydney, Australia. The result of the experiment demonstrates the capability of the proposed framework to improve pedestrian comfort in relation to wind profile. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=spatial%20decision-support%20design" title="spatial decision-support design">spatial decision-support design</a>, <a href="https://publications.waset.org/abstracts/search?q=performance-based%20wind%20simulation" title=" performance-based wind simulation"> performance-based wind simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=LiDAR" title=" LiDAR"> LiDAR</a>, <a href="https://publications.waset.org/abstracts/search?q=GIS" title=" GIS"> GIS</a> </p> <a href="https://publications.waset.org/abstracts/148260/wind-velocity-mitigation-for-conceptual-design-a-spatial-decision-support-framework" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148260.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">124</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">41912</span> Performance of Derna Steam Power Plant at Varying Super-Heater Operating Conditions Based on Exergy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Idris%20Elfeituri">Idris Elfeituri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the current study, energy and exergy analysis of a 65 MW steam power plant was carried out. This study investigated the effect of variations of overall conductance of the super heater on the performance of an existing steam power plant located in Derna, Libya. The performance of the power plant was estimated by a mathematical modelling which considers the off-design operating conditions of each component. A fully interactive computer program based on the mass, energy and exergy balance equations has been developed. The maximum exergy destruction has been found in the steam generation unit. A 50% reduction in the design value of overall conductance of the super heater has been achieved, which accordingly decreases the amount of the net electrical power that would be generated by at least 13 MW, as well as the overall plant exergy efficiency by at least 6.4%, and at the same time that would cause an increase of the total exergy destruction by at least 14 MW. The achieved results showed that the super heater design and operating conditions play an important role on the thermodynamics performance and the fuel utilization of the power plant. Moreover, these considerations are very useful in the process of the decision that should be taken at the occasions of deciding whether to replace or renovate the super heater of the power plant. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Exergy" title="Exergy">Exergy</a>, <a href="https://publications.waset.org/abstracts/search?q=Super-heater" title=" Super-heater"> Super-heater</a>, <a href="https://publications.waset.org/abstracts/search?q=Fouling%3B%20Steam%20power%20plant%3B%20Off-design." title=" Fouling; Steam power plant; Off-design."> Fouling; Steam power plant; Off-design.</a>, <a href="https://publications.waset.org/abstracts/search?q=Fouling%3B" title=" Fouling;"> Fouling;</a>, <a href="https://publications.waset.org/abstracts/search?q=Super-heater" title=" Super-heater"> Super-heater</a>, <a href="https://publications.waset.org/abstracts/search?q=Steam%20power%20plant" title=" Steam power plant"> Steam power plant</a> </p> <a href="https://publications.waset.org/abstracts/60015/performance-of-derna-steam-power-plant-at-varying-super-heater-operating-conditions-based-on-exergy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60015.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">333</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">41911</span> Implementation and Design of Fuzzy Controller for High Performance Dc-Dc Boost Converters</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Mansouri">A. Mansouri</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Krim"> F. Krim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper discusses the implementation and design of both linear PI and fuzzy controllers for DC-DC boost converters. Design of PI controllers is based on temporal response of closed-loop converters, while fuzzy controllers design is based on heuristic knowledge of boost converters. Linear controller implementation is quite straightforward relying on mathematical models, while fuzzy controller implementation employs one or more artificial intelligences techniques. Comparison between these boost controllers is made in design aspect. Experimental results show that the proposed fuzzy controller system is robust against input voltage and load resistance changing and in respect of start-up transient. Results indicate that fuzzy controller can achieve best control performance concerning faster transient response, steady-state response good stability and accuracy under different operating conditions. Fuzzy controller is more suitable to control boost converters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=boost%20DC-DC%20converter" title="boost DC-DC converter">boost DC-DC converter</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy" title=" fuzzy"> fuzzy</a>, <a href="https://publications.waset.org/abstracts/search?q=PI%20controllers" title=" PI controllers"> PI controllers</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20electronics%20and%20control%20system" title=" power electronics and control system "> power electronics and control system </a> </p> <a href="https://publications.waset.org/abstracts/25094/implementation-and-design-of-fuzzy-controller-for-high-performance-dc-dc-boost-converters" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25094.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">475</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">41910</span> Design and Performance Comparison of Metamaterial Based Antenna for 4G/5G Mobile Devices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jalal%20Khan">Jalal Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniyal%20Ali%20Sehrai"> Daniyal Ali Sehrai</a>, <a href="https://publications.waset.org/abstracts/search?q=Shakeel%20Ahmad"> Shakeel Ahmad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the design and performance evaluation of multiband metamaterial based antenna operating in the 3.6 GHz (4G), 14.33 GHz, and 28.86 GHz (5G) frequency bands, for future mobile and handheld devices. The radiating element of the proposed design is made up of a conductive material supported by a 1.524 mm thicker Rogers-4003 substrate, having a relative dielectric constant and loss tangent of 3.55 and 0.0027, respectively. The substrate is backed by truncated ground plane. The future mobile communication system is based on higher frequencies, which are highly affected by the atmospheric conditions. Therefore, to overcome the path loss problem, essential enhancements and improvements must be made in the overall performance of the antenna. The traditional ground plane does not provide the in-phase reflection and surface wave suppression due to which side and back lobes are produced. This will affect the antenna performance in terms of gain and efficiency. To enhance the overall performance of the antenna, a metamaterial acting as a high impedance surface (HIS) is used as a reflector in the proposed design. The simulated gain of the metamaterial based antenna is enhanced from {2.76-6.47, 4.83-6.71 and 7.52-7.73} dB at 3.6, 14.33 and 28.89 GHz, respectively relative to the gain of the antenna backed by a traditional ground plane. The proposed antenna radiated efficiently with a radiated efficiency (>85 %) in all the three frequency bands with and without metamaterial surface. The total volume of the antenna is (<em>L</em> x <em>W</em> x <em>h</em>=45 x 40 x 1.524) mm<sup>3</sup>. The antenna can be potentially used for wireless handheld devices and mobile terminal. All the simulations have been performed using the Computer Simulation Technology (CST) software. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CST%20MWS" title="CST MWS">CST MWS</a>, <a href="https://publications.waset.org/abstracts/search?q=fourth%20generation%2Ffifth%20generation" title=" fourth generation/fifth generation"> fourth generation/fifth generation</a>, <a href="https://publications.waset.org/abstracts/search?q=4G%2F5G" title=" 4G/5G"> 4G/5G</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20gain" title=" high gain"> high gain</a>, <a href="https://publications.waset.org/abstracts/search?q=multiband" title=" multiband"> multiband</a>, <a href="https://publications.waset.org/abstracts/search?q=metamaterial" title=" metamaterial"> metamaterial</a> </p> <a href="https://publications.waset.org/abstracts/90881/design-and-performance-comparison-of-metamaterial-based-antenna-for-4g5g-mobile-devices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90881.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">160</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41909</span> 'Performance-Based' Seismic Methodology and Its Application in Seismic Design of Reinforced Concrete Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jelena%20R.%20Pejovi%C4%87">Jelena R. Pejović</a>, <a href="https://publications.waset.org/abstracts/search?q=Nina%20N.%20Serdar"> Nina N. Serdar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents an analysis of the “Performance-Based” seismic design method, in order to overcome the perceived disadvantages and limitations of the existing seismic design approach based on force, in engineering practice. Bearing in mind, the specificity of the earthquake as a load and the fact that the seismic resistance of the structures solely depends on its behaviour in the nonlinear field, traditional seismic design approach based on force and linear analysis is not adequate. “Performance-Based” seismic design method is based on nonlinear analysis and can be used in everyday engineering practice. This paper presents the application of this method to eight-story high reinforced concrete building with combined structural system (reinforced concrete frame structural system in one direction and reinforced concrete ductile wall system in other direction). The nonlinear time-history analysis is performed on the spatial model of the structure using program Perform 3D, where the structure is exposed to forty real earthquake records. For considered building, large number of results were obtained. It was concluded that using this method we could, with a high degree of reliability, evaluate structural behavior under earthquake. It is obtained significant differences in the response of structures to various earthquake records. Also analysis showed that frame structural system had not performed well at the effect of earthquake records on soil like sand and gravel, while a ductile wall system had a satisfactory behavior on different types of soils. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ductile%20wall" title="ductile wall">ductile wall</a>, <a href="https://publications.waset.org/abstracts/search?q=frame%20system" title=" frame system"> frame system</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20time-history%20analysis" title=" nonlinear time-history analysis"> nonlinear time-history analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=performance-based%20methodology" title=" performance-based methodology"> performance-based methodology</a>, <a href="https://publications.waset.org/abstracts/search?q=RC%20building" title=" RC building"> RC building</a> </p> <a href="https://publications.waset.org/abstracts/45616/performance-based-seismic-methodology-and-its-application-in-seismic-design-of-reinforced-concrete-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45616.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">366</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">41908</span> Design Channel Non Persistent CSMA MAC Protocol Model for Complex Wireless Systems Based on SoC </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20A.%20Aref">Ibrahim A. Aref</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarek%20El-Mihoub"> Tarek El-Mihoub</a>, <a href="https://publications.waset.org/abstracts/search?q=Khadiga%20Ben%20Musa"> Khadiga Ben Musa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents Carrier Sense Multiple Access (CSMA) communication model based on SoC design methodology. Such model can be used to support the modelling of the complex wireless communication systems, therefore use of such communication model is an important technique in the construction of high performance communication. SystemC has been chosen because it provides a homogeneous design flow for complex designs (i.e. SoC and IP based design). We use a swarm system to validate CSMA designed model and to show how advantages of incorporating communication early in the design process. The wireless communication created through the modeling of CSMA protocol that can be used to achieve communication between all the agents and to coordinate access to the shared medium (channel). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=systemC" title="systemC">systemC</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=CSMA" title=" CSMA"> CSMA</a> </p> <a href="https://publications.waset.org/abstracts/3340/design-channel-non-persistent-csma-mac-protocol-model-for-complex-wireless-systems-based-on-soc" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3340.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">428</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">41907</span> A New Design Methodology for Partially Reconfigurable Systems-on-Chip</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Roukaya%20Dalbouchi">Roukaya Dalbouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkrin%20Zitouni"> Abdelkrin Zitouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we propose a novel design methodology for Dynamic Partial Reconfigurable (DPR) system. This type of system has the property of being able to be modified after its design and during its execution. The suggested design methodology is generic in terms of granularity, number of modules, and reconfigurable region and suitable for any type of modern application. It is based on the interconnection between several design stages. The recommended methodology represents a guide for the design of DPR architectures that meet compromise reconfiguration/performance. To validate the proposed methodology, we use as an application a video watermarking. The comparison result shows that the proposed methodology supports all stages of DPR architecture design and characterized by a high abstraction level. It provides a dynamic/partial reconfigurable architecture; it guarantees material efficiency, the flexibility of reconfiguration, and superior performance in terms of frequency and power consumption. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dynamically%20reconfigurable%20system" title="dynamically reconfigurable system">dynamically reconfigurable system</a>, <a href="https://publications.waset.org/abstracts/search?q=block%20matching%20algorithm" title=" block matching algorithm"> block matching algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=partial%20reconfiguration" title=" partial reconfiguration"> partial reconfiguration</a>, <a href="https://publications.waset.org/abstracts/search?q=motion%20vectors" title=" motion vectors"> motion vectors</a>, <a href="https://publications.waset.org/abstracts/search?q=video%20watermarking" title=" video watermarking"> video watermarking</a> </p> <a href="https://publications.waset.org/abstracts/155577/a-new-design-methodology-for-partially-reconfigurable-systems-on-chip" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155577.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">41906</span> Rule Based Architecture for Collaborative Multidisciplinary Aircraft Design Optimisation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nickolay%20Jelev">Nickolay Jelev</a>, <a href="https://publications.waset.org/abstracts/search?q=Andy%20Keane"> Andy Keane</a>, <a href="https://publications.waset.org/abstracts/search?q=Carren%20Holden"> Carren Holden</a>, <a href="https://publications.waset.org/abstracts/search?q=Andr%C3%A1s%20S%C3%B3bester"> András Sóbester</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In aircraft design, the jump from the conceptual to preliminary design stage introduces a level of complexity which cannot be realistically handled by a single optimiser, be that a human (chief engineer) or an algorithm. The design process is often partitioned along disciplinary lines, with each discipline given a level of autonomy. This introduces a number of challenges including, but not limited to: coupling of design variables; coordinating disciplinary teams; handling of large amounts of analysis data; reaching an acceptable design within time constraints. A number of classical Multidisciplinary Design Optimisation (MDO) architectures exist in academia specifically designed to address these challenges. Their limited use in the industrial aircraft design process has inspired the authors of this paper to develop an alternative strategy based on well established ideas from Decision Support Systems. The proposed rule based architecture sacrifices possibly elusive guarantees of convergence for an attractive return in simplicity. The method is demonstrated on analytical and aircraft design test cases and its performance is compared to a number of classical distributed MDO architectures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Multidisciplinary%20Design%20Optimisation" title="Multidisciplinary Design Optimisation">Multidisciplinary Design Optimisation</a>, <a href="https://publications.waset.org/abstracts/search?q=Rule%20Based%20Architecture" title=" Rule Based Architecture"> Rule Based Architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=Aircraft%20Design" title=" Aircraft Design"> Aircraft Design</a>, <a href="https://publications.waset.org/abstracts/search?q=Decision%20Support%20System" title=" Decision Support System"> Decision Support System</a> </p> <a href="https://publications.waset.org/abstracts/58390/rule-based-architecture-for-collaborative-multidisciplinary-aircraft-design-optimisation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58390.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">355</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">41905</span> Model Solutions for Performance-Based Seismic Analysis of an Anchored Sheet Pile Quay Wall</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20J.%20W.%20Habets">C. J. W. Habets</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20J.%20Peters"> D. J. Peters</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20G.%20de%20Gijt"> J. G. de Gijt</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20V.%20Metrikine"> A. V. Metrikine</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20N.%20Jonkman"> S. N. Jonkman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conventional seismic designs of quay walls in ports are mostly based on pseudo-static analysis. A more advanced alternative is the Performance-Based Design (PBD) method, which evaluates permanent deformations and amounts of (repairable) damage under seismic loading. The aim of this study is to investigate the suitability of this method for anchored sheet pile quay walls that were not purposely designed for seismic loads. A research methodology is developed in which pseudo-static, permanent-displacement and finite element analysis are employed, calibrated with an experimental reference case that considers a typical anchored sheet pile wall. A reduction factor that accounts for deformation behaviour is determined for pseudo-static analysis. A model to apply traditional permanent displacement analysis on anchored sheet pile walls is proposed. Dynamic analysis is successfully carried out. From the research it is concluded that PBD evaluation can effectively be used for seismic analysis and design of this type of structure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=anchored%20sheet%20pile%20quay%20wall" title="anchored sheet pile quay wall">anchored sheet pile quay wall</a>, <a href="https://publications.waset.org/abstracts/search?q=simplified%20dynamic%20analysis" title=" simplified dynamic analysis"> simplified dynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=performance-based%20design" title=" performance-based design"> performance-based design</a>, <a href="https://publications.waset.org/abstracts/search?q=pseudo-static%20analysis" title=" pseudo-static analysis"> pseudo-static analysis</a> </p> <a href="https://publications.waset.org/abstracts/42173/model-solutions-for-performance-based-seismic-analysis-of-an-anchored-sheet-pile-quay-wall" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42173.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">379</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">41904</span> Design Optimization and Thermoacoustic Analysis of Pulse Tube Cryocooler Components</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Aravinth">K. Aravinth</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20T.%20Vignesh"> C. T. Vignesh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The usage of pulse tube cryocoolers is significantly increased mainly due to the advantage of the absence of moving parts. The underlying idea of this project is to optimize the design of pulse tube, regenerator, a resonator in cryocooler and analyzing the thermo-acoustic oscillations with respect to the design parameters. Computational Fluid Dynamic (CFD) model with time-dependent validation is done to predict its performance. The continuity, momentum, and energy equations are solved for various porous media regions. The effect of changing the geometries and orientation will be validated and investigated in performance. The pressure, temperature and velocity fields in the regenerator and pulse tube are evaluated. This optimized design performance results will be compared with the existing pulse tube cryocooler design. The sinusoidal behavior of cryocooler in acoustic streaming patterns in pulse tube cryocooler will also be evaluated. <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=cryogenics" title=" cryogenics"> cryogenics</a>, <a href="https://publications.waset.org/abstracts/search?q=design" title=" design"> design</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a> </p> <a href="https://publications.waset.org/abstracts/82751/design-optimization-and-thermoacoustic-analysis-of-pulse-tube-cryocooler-components" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82751.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">175</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">41903</span> Design of Liquid Crystal Based Tunable Reflectarray Antenna Using Slot Embedded Patch Element Configurations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Y.%20Ismail">M. Y. Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Inam"> M. Inam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the design and analysis of Liquid Crystal (LC) based tunable reflect array antenna with different design configurations within X-band frequency range. The effect of LC volume used for unit cell element on frequency tunability and reflection loss performance has been investigated. Moreover different slot embedded patch element configurations have been proposed for LC based tunable reflect array antenna design with enhanced performance. The detailed fabrication and measurement procedure for different LC based unit cells has been presented. The waveguide scattering parameter measured results demonstrated that by using the circular slot embedded patch elements, the frequency tunability and dynamic phase range can be increased from 180 MHz to 200 MHz and 120° to 124° respectively. Furthermore the circular slot embedded patch element can be designed at 10 GHz resonant frequency with a patch volume of 2.71 mm3 as compared to 3.47 mm3 required for rectangular patch without slot. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=liquid%20crystal" title="liquid crystal">liquid crystal</a>, <a href="https://publications.waset.org/abstracts/search?q=tunable%20reflect%20array" title=" tunable reflect array"> tunable reflect array</a>, <a href="https://publications.waset.org/abstracts/search?q=frequency%20tunability" title=" frequency tunability"> frequency tunability</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20phase%20range" title=" dynamic phase range "> dynamic phase range </a> </p> <a href="https://publications.waset.org/abstracts/13628/design-of-liquid-crystal-based-tunable-reflectarray-antenna-using-slot-embedded-patch-element-configurations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13628.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">520</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">41902</span> Direct-Displacement Based Design for Buildings with Non-Linear Viscous Dampers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kelly%20F.%20Delgado-De%20Agrela">Kelly F. Delgado-De Agrela</a>, <a href="https://publications.waset.org/abstracts/search?q=Sonia%20E.%20Ruiz"> Sonia E. Ruiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Marco%20A.%20Santos-Santiago"> Marco A. Santos-Santiago</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An approach is proposed for the design of regular buildings equipped with non-linear viscous dissipating devices. The approach is based on a direct-displacement seismic design method which satisfies seismic performance objectives. The global system involved is formed by structural regular moment frames capable of supporting gravity and lateral loads with elastic response behavior plus a set of non-linear viscous dissipating devices which reduce the structural seismic response. The dampers are characterized by two design parameters: (1) a positive real exponent α which represents the non-linearity of the damper, and (2) the damping coefficient C of the device, whose constitutive force-velocity law is given by F=Cvᵃ, where v is the velocity between the ends of the damper. The procedure is carried out using a substitute structure. Two limits states are verified: serviceability and near collapse. The reduction of the spectral ordinates by the additional damping assumed in the design process and introduced to the structure by the viscous non-linear dampers is performed according to a damping reduction factor. For the design of the non-linear damper system, the real velocity is considered instead of the pseudo-velocity. The proposed design methodology is applied to an 8-story steel moment frame building equipped with non-linear viscous dampers, located in intermediate soil zone of Mexico City, with a dominant period Tₛ = 1s. In order to validate the approach, nonlinear static analyses and nonlinear time history analyses are performed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=based%20design" title="based design">based design</a>, <a href="https://publications.waset.org/abstracts/search?q=direct-displacement%20based%20design" title=" direct-displacement based design"> direct-displacement based design</a>, <a href="https://publications.waset.org/abstracts/search?q=non-linear%20viscous%20dampers" title=" non-linear viscous dampers"> non-linear viscous dampers</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20design" title=" performance design"> performance design</a> </p> <a href="https://publications.waset.org/abstracts/83169/direct-displacement-based-design-for-buildings-with-non-linear-viscous-dampers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83169.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">193</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">41901</span> A New Full Adder Cell for High Performance Low Power Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdiar%20Hosseighadiry">Mahdiar Hosseighadiry</a>, <a href="https://publications.waset.org/abstracts/search?q=Farnaz%20Fotovatikhah"> Farnaz Fotovatikhah</a>, <a href="https://publications.waset.org/abstracts/search?q=Razali%20Ismail"> Razali Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohsen%20Khaledian"> Mohsen Khaledian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Saeidemanesh"> Mehdi Saeidemanesh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a new low-power high-performance full adder is presented based on a new design method. The proposed method relies on pass gate design and provides full-swing circuits with minimum number of transistors. The method has been applied on SUM, COUT and XOR-XNOR modules resulting on rail-to-rail intermediate and output signals with no feedback transistors. The presented full adder cell has been simulated in 45 and 32 nm CMOS technologies using HSPICE considering parasitic capacitance and compared to several well-known designs from literature. In addition, the proposed cell has been extensively evaluated with different output loads, supply voltages, temperatures, threshold voltages, and operating frequencies. Results show that it functions properly under all mentioned conditions and exhibits less PDP compared to other design styles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=full%20adders" title="full adders">full adders</a>, <a href="https://publications.waset.org/abstracts/search?q=low-power" title=" low-power"> low-power</a>, <a href="https://publications.waset.org/abstracts/search?q=high-performance" title=" high-performance"> high-performance</a>, <a href="https://publications.waset.org/abstracts/search?q=VLSI%20design" title=" VLSI design"> VLSI design</a> </p> <a href="https://publications.waset.org/abstracts/6812/a-new-full-adder-cell-for-high-performance-low-power-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6812.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">388</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">41900</span> Optimisation of Pin Fin Heat Sink Using Taguchi Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20K.%20Chougule">N. K. Chougule</a>, <a href="https://publications.waset.org/abstracts/search?q=G.%20V.%20Parishwad"> G. V. Parishwad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The pin fin heat sink is a novel heat transfer device to transfer large amount of heat through with very small temperature differences and it also possesses large uniform cooling characteristics. Pin fins are widely used as elements that provide increased cooling for electronic devices. Increasing demands regarding the performance of such devices can be observed due to the increasing heat production density of electronic components. For this reason, extensive work is being carried out to select and optimize pin fin elements for increased heat transfer. In this paper, the effects of design parameters and the optimum design parameters for a Pin-Fin heat sink (PFHS) under multi-jet impingement case with thermal performance characteristics have been investigated by using Taguchi methodology based on the L9 orthogonal arrays. Various design parameters, such as pin-fin array size, gap between nozzle exit to impingement target surface (Z/d) and air velocity are explored by numerical experiment. The average convective heat transfer coefficient is considered as the thermal performance characteristics. The analysis of variance (ANOVA) is applied to find the effect of each design parameter on the thermal performance characteristics. Then the results of confirmation test with the optimal level constitution of design parameters have obviously shown that this logic approach can effective in optimizing the PFHS with the thermal performance characteristics. The analysis of the Taguchi method reveals that, all the parameters mentioned above have equal contributions in the performance of heat sink efficiency. Experimental results are provided to validate the suitability of the proposed approach. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pin%20Fin%20Heat%20Sink%20%28PFHS%29" title="Pin Fin Heat Sink (PFHS)">Pin Fin Heat Sink (PFHS)</a>, <a href="https://publications.waset.org/abstracts/search?q=Taguchi%20method" title=" Taguchi method"> Taguchi method</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20performance" title=" thermal performance"> thermal performance</a> </p> <a href="https://publications.waset.org/abstracts/42824/optimisation-of-pin-fin-heat-sink-using-taguchi-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42824.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">248</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">41899</span> Performance-Based Quality Evaluation of Database Conceptual Schemas</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Janusz%20Getta">Janusz Getta</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhaoxi%20Pan"> Zhaoxi Pan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Performance-based quality evaluation of database conceptual schemas is an important aspect of database design process. It is evident that different conceptual schemas provide different logical schemas and performance of user applications strongly depends on logical and physical database structures. This work presents the entire process of performance-based quality evaluation of conceptual schemas. First, we show format. Then, the paper proposes a new specification of object algebra for representation of conceptual level database applications. Transformation of conceptual schemas and expression of object algebra into implementation schema and implementation in a particular database system allows for precise estimation of the processing costs of database applications and as a consequence for precise evaluation of performance-based quality of conceptual schemas. Then we describe an experiment as a proof of concept for the evaluation procedure presented in the paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conceptual%20schema" title="conceptual schema">conceptual schema</a>, <a href="https://publications.waset.org/abstracts/search?q=implementation%20schema" title=" implementation schema"> implementation schema</a>, <a href="https://publications.waset.org/abstracts/search?q=logical%20schema" title=" logical schema"> logical schema</a>, <a href="https://publications.waset.org/abstracts/search?q=object%20algebra" title=" object algebra"> object algebra</a>, <a href="https://publications.waset.org/abstracts/search?q=performance%20evaluation" title=" performance evaluation"> performance evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=query%20processing" title=" query processing"> query processing</a> </p> <a href="https://publications.waset.org/abstracts/71218/performance-based-quality-evaluation-of-database-conceptual-schemas" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71218.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">41898</span> Zero Cross-Correlation Codes Based on Balanced Incomplete Block Design: Performance Analysis and Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Garadi%20Ahmed">Garadi Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Boubakar%20S.%20Bouazza"> Boubakar S. Bouazza</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Zero Cross-Correlation (C, w) code is a family of binary sequences of length C and constant Hamming-weight, the cross correlation between any two sequences equal zero. In this paper, we evaluate the performance of ZCC code based on Balanced Incomplete Block Design (BIBD) for Spectral Amplitude Coding Optical Code Division Multiple Access (SAC-OCDMA) system using direct detection. The BER obtained is better than 10-9 for five simultaneous users. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=spectral%20amplitude%20coding-optical%20code-division-multiple-access%20%28SAC-OCDMA%29" title="spectral amplitude coding-optical code-division-multiple-access (SAC-OCDMA)">spectral amplitude coding-optical code-division-multiple-access (SAC-OCDMA)</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20induced%20intensity%20noise%20%28PIIN%29" title=" phase induced intensity noise (PIIN)"> phase induced intensity noise (PIIN)</a>, <a href="https://publications.waset.org/abstracts/search?q=balanced%20incomplete%20block%20design%20%28BIBD%29" title=" balanced incomplete block design (BIBD)"> balanced incomplete block design (BIBD)</a>, <a href="https://publications.waset.org/abstracts/search?q=zero%20cross-correlation%20%28ZCC%29" title=" zero cross-correlation (ZCC)"> zero cross-correlation (ZCC)</a> </p> <a href="https://publications.waset.org/abstracts/70616/zero-cross-correlation-codes-based-on-balanced-incomplete-block-design-performance-analysis-and-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70616.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">366</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">41897</span> Effective Wind-Induced Natural Ventilation in a Residential Apartment Typology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tanvi%20P.%20Medshinge">Tanvi P. Medshinge</a>, <a href="https://publications.waset.org/abstracts/search?q=Prasad%20Vaidya"> Prasad Vaidya</a>, <a href="https://publications.waset.org/abstracts/search?q=Monisha%20E.%20Royan"> Monisha E. Royan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In India, cooling loads in residential sector is a major contributor to its total energy consumption. Due to the increasing cooling need, the market penetration of air-conditioners is further expected to rise. Natural Ventilation (NV), however, possesses great potential to save significant energy consumption especially for residential buildings in moderate climates. As multifamily residential apartment buildings are designed by repetitive use of prototype designs, deriving individual NV based design prototype solutions for a combination of different wind incidence angles and orientations would provide significant opportunity to address the rise in cooling loads by residential sector. This paper presents the results of NV performance of a selected prototype apartment design with a cluster of four units in Pune, India, and an attempt to improve the NV performance through design modifications. The water table apparatus, a physical modelling tool, is used to study the flow patterns and simulate wind-induced NV performance. Quantification of NV performance is done by post processing images captured from video recordings in terms of percentage of area with good and poor access to ventilation. NV performance of the existing design for eight wind incidence angles showed that of the cluster of four units, the windward units showed good access to ventilation for all rooms, and the leeward units had lower access to ventilation with the bedrooms in the leeward units having the least access. The results showed improved performance in all the units for all wind incidence angles to more than 80% good access to ventilation. Some units showed an additional improvement to more than 90% good access to ventilation. This process of design and performance evaluation improved some individual units from 0% to 100% for good access to ventilation. The results demonstrate the ease of use and the power of the water table apparatus for performance-based design to simulate wind induced NV.   <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fluid%20dynamics" title="fluid dynamics">fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=prototype%20design" title=" prototype design"> prototype design</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20ventilation" title=" natural ventilation"> natural ventilation</a>, <a href="https://publications.waset.org/abstracts/search?q=simulations" title=" simulations"> simulations</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20table%20apparatus" title=" water table apparatus"> water table apparatus</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20incidence%20angles" title=" wind incidence angles"> wind incidence angles</a> </p> <a href="https://publications.waset.org/abstracts/96187/effective-wind-induced-natural-ventilation-in-a-residential-apartment-typology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96187.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">229</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=performance%20based%20design&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=performance%20based%20design&page=3">3</a></li> <li class="page-item"><a class="page-link" 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