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Aghaei Badr</title> <meta name="description" content="Search results for: Tannaz Aghaei Badr"> <meta name="keywords" content="Tannaz Aghaei Badr"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" type="button" data-toggle="collapse" data-target="#navbarMenu" aria-controls="navbarMenu" aria-expanded="false" aria-label="Toggle navigation"> <span class="navbar-toggler-icon"></span> </button> <div class="w-100"> <div class="d-none d-lg-flex flex-row-reverse"> <form method="get" action="https://waset.org/search" class="form-inline my-2 my-lg-0"> <input class="form-control mr-sm-2" type="search" placeholder="Search Conferences" value="Tannaz Aghaei Badr" name="q" aria-label="Search"> <button class="btn btn-light my-2 my-sm-0" type="submit"><i class="fas fa-search"></i></button> </form> </div> <div class="collapse navbar-collapse mt-1" id="navbarMenu"> <ul class="navbar-nav ml-auto align-items-center" id="mainNavMenu"> <li class="nav-item"> <a class="nav-link" href="https://waset.org/conferences" title="Conferences in 2024/2025/2026">Conferences</a> </li> <li class="nav-item"> <a class="nav-link" href="https://waset.org/disciplines" 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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="Tannaz Aghaei Badr"> <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> 63</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Tannaz Aghaei Badr</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Pathological Disparities in Patients Diagnosed with Prostate Imaging Reporting and Data System 3 Lesions: A Retrospective Study in a High-Volume Academic Center</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Reza%20Roshandel">M. Reza Roshandel</a>, <a href="https://publications.waset.org/abstracts/search?q=Tannaz%20Aghaei%20Badr"> Tannaz Aghaei Badr</a>, <a href="https://publications.waset.org/abstracts/search?q=Batoul%20Khoundabi"> Batoul Khoundabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sara%20C.%20Lewis"> Sara C. Lewis</a>, <a href="https://publications.waset.org/abstracts/search?q=Soroush%20Rais-Bahrami"> Soroush Rais-Bahrami</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20Sfakianos"> John Sfakianos</a>, <a href="https://publications.waset.org/abstracts/search?q=Reza%20Mehrazin"> Reza Mehrazin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ash%20K.%20Tewari"> Ash K. Tewari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: Prostate biopsy is the most reliable diagnostic method for choosing the appropriate management of prostate cancer. However, discrepancies between Gleason grade groups (GG) of different biopsies remain a significant concern. This study aims to assess the association of the radiological factors with GG discrepancies in patients with index Prostate Imaging Reporting and Data System (PI-RADS) 3 lesions, using radical prostatectomy (RP) specimens as the most accurate and informative pathology. Methods: This single-institutional retrospective study was performed on a total of 2289 consecutive prostate cancer patients with combined targeted and systematic prostate biopsy followed by radical prostatectomy (RP). The database was explored for patients with the index PI-RADS 3 lesions version 2 and 2.1. Cancers with PI-RADS 4 or 5 scoring were excluded from the study. Patient characteristics and radiologic features were analyzed by multivariable logistic regression. Number-density of lesions was defined as the number of lesions per prostatic volume. Results: Of the 151 prostate cancer cases with PI-RADS 3 index lesions, 27% and 17% had upgrades and downgrades at RP, respectively. Analysis of grade changes showed no significant associations between discrepancies and the number or the number density of PI-RADS 3 lesions. Moreover, the study showed no significant association of the GG changes with race, age, location of the lesions, or prostate volume. Conclusions: This study demonstrated that in PI-RADS 3 cancerous nodules, the chance of the pathology changes in the final pathology of RP specimens was low. Furthermore, having multiple PI-RADS 3 nodules did not change the conclusion, as the possibility of grade changes in patients with multiple nodules was similar to those with solitary lesions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=prostate" title="prostate">prostate</a>, <a href="https://publications.waset.org/abstracts/search?q=adenocarcinoma" title=" adenocarcinoma"> adenocarcinoma</a>, <a href="https://publications.waset.org/abstracts/search?q=multiparametric%20MRI" title=" multiparametric MRI"> multiparametric MRI</a>, <a href="https://publications.waset.org/abstracts/search?q=Gleason%20score" title=" Gleason score"> Gleason score</a>, <a href="https://publications.waset.org/abstracts/search?q=robot-assisted%20surgery" title=" robot-assisted surgery"> robot-assisted surgery</a> </p> <a href="https://publications.waset.org/abstracts/161253/pathological-disparities-in-patients-diagnosed-with-prostate-imaging-reporting-and-data-system-3-lesions-a-retrospective-study-in-a-high-volume-academic-center" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161253.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">133</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">62</span> Investigation of Success Rate and Growth Parameters of Five Pistachio Cultivars Transplanted in March and November</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Mohammadi%20Aliabadi">H. Mohammadi Aliabadi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20S.%20Mansouri"> M. S. Mansouri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of two different transplanting date (March and November) in five pistachio cultivars ('Ahmad Aghaei', 'Akbri', Momtaz', 'Ghazvini', and 'Ohadi') were evaluated in Rafsanjan Azad University, Iran. Seeds were planted in plastic bags in March 2012. The seedlings were transplanted to a field in November 2012 and March 2013. Vegetative growing factors such as plant length, stem diameter, number of leaves and fresh and dry weight were measured in date. The results obtained from collected data indicated that no significant differences were found for the traits of interest. Therefore, growers should not be concerned regarding these two transplanting dates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pistachio" title="pistachio">pistachio</a>, <a href="https://publications.waset.org/abstracts/search?q=seedling" title=" seedling"> seedling</a>, <a href="https://publications.waset.org/abstracts/search?q=success%20rate" title=" success rate"> success rate</a>, <a href="https://publications.waset.org/abstracts/search?q=transplanting%20date" title=" transplanting date"> transplanting date</a> </p> <a href="https://publications.waset.org/abstracts/15916/investigation-of-success-rate-and-growth-parameters-of-five-pistachio-cultivars-transplanted-in-march-and-november" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15916.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">436</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">61</span> Patterns of Gear Substitution in Norwegian Trawl Fishery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tannaz%20Alizadeh%20Ashrafi">Tannaz Alizadeh Ashrafi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Seasonal variability in biological and ecological factors together with relevant socio-economic determinants affect the choice of fishing gear, frequency of its usage and decision about gear conversion under multi-species situation. In order to deal with the complex dynamics of fisheries, fishers, constantly, have to make decisions about how long to fish, when to go fishing, what species to target, and which gear to deploy. In this regard, the purpose of this study is to examine the dynamics of gear/ species combination in Norwegian fishery. A comprehensive vessel-level set of data for the main economically important species including: cod, haddock, saithe, shrimp and mixed catch have been obtained from the Norwegian Directorate of Fisheries covering the daily data in 2010. The present study further analyzes the level of flexibility and rationality of the fishers operating in the trawl fishery. The results show the disproportion between intention of the trawl fishers to maximize profitability of each fishing trip and their harvesting behavior in reality. Discussion is based on so-called maximizing behavior. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=trawl%20fishery" title="trawl fishery">trawl fishery</a>, <a href="https://publications.waset.org/abstracts/search?q=gear%20substitution" title=" gear substitution"> gear substitution</a>, <a href="https://publications.waset.org/abstracts/search?q=rationality" title=" rationality"> rationality</a>, <a href="https://publications.waset.org/abstracts/search?q=profit%20maximizing%20behavior" title=" profit maximizing behavior"> profit maximizing behavior</a> </p> <a href="https://publications.waset.org/abstracts/76957/patterns-of-gear-substitution-in-norwegian-trawl-fishery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76957.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">276</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">60</span> Fatigue Behavior of Dissimilar Welded Monel400 and SS316 by FSW</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aboozar%20Aghaei">Aboozar Aghaei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, the dissimilar Monel400 and SS316 were joined by friction stir welding (FSW). The applied rotating speed was 400 rpm, whereas the traverse speed varied between 50 and 150 mm/min. At a constant rotating speed, the sound welds were obtained at the welding speeds of 50 and 100 mm/min. However, a groove-like defect was formed when the welding speed exceeded 100 mm/min. The mechanical properties of the joints were evaluated using tensile and fatigue tests. The fatigue strength of dissimilar FSWed specimen was higher than that of both Monel400 and SS316. To study the failure behavior of FSWed specimens, the fracture surfaces were analyzed using scanning electron microscope (SEM). The failure analysis indicates that different mechanisms may contribute to the fracture of welds. This was attributed to the dissimilar characteristics of dissimilar materials exhibiting different failure behaviors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title="mechanical properties">mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a>, <a href="https://publications.waset.org/abstracts/search?q=frictions" title=" frictions"> frictions</a>, <a href="https://publications.waset.org/abstracts/search?q=monel" title=" monel"> monel</a> </p> <a href="https://publications.waset.org/abstracts/167275/fatigue-behavior-of-dissimilar-welded-monel400-and-ss316-by-fsw" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167275.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">71</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">59</span> Assessment of Breast, Lung and Liver Effective Doses in Heart Imaging by CT-Scan 128 Dual Sources with Use of TLD-100 in RANDO Phantom</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Seyedeh%20Sepideh%20Amini">Seyedeh Sepideh Amini</a>, <a href="https://publications.waset.org/abstracts/search?q=Navideh%20Aghaei%20Amirkhizi"> Navideh Aghaei Amirkhizi</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyedeh%20Paniz%20Amini"> Seyedeh Paniz Amini</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Soheil%20Sayyahi"> Seyed Soheil Sayyahi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Reza%20Davar%20Panah"> Mohammad Reza Davar Panah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> CT-Scan is one of the lateral and sectional imaging methods that produce 3D-images with use of rotational x-ray tube around central axis. This study is about evaluation and calculation of effective doses around heart organs such as breast, lung and liver with CT-Scan 128 dual sources with TLD_100 and RANDO Phantom by spiral, flash and conventional protocols. In results, it is showed that in spiral protocol organs have maximum effective dose and minimum in flash protocol. Thus flash protocol advised for children and risk persons. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=X-ray%20computed%20tomography" title="X-ray computed tomography">X-ray computed tomography</a>, <a href="https://publications.waset.org/abstracts/search?q=dosimetry" title=" dosimetry"> dosimetry</a>, <a href="https://publications.waset.org/abstracts/search?q=TLD-100" title=" TLD-100"> TLD-100</a>, <a href="https://publications.waset.org/abstracts/search?q=RANDO" title=" RANDO"> RANDO</a>, <a href="https://publications.waset.org/abstracts/search?q=phantom" title=" phantom"> phantom</a> </p> <a href="https://publications.waset.org/abstracts/36861/assessment-of-breast-lung-and-liver-effective-doses-in-heart-imaging-by-ct-scan-128-dual-sources-with-use-of-tld-100-in-rando-phantom" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/36861.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">474</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Fatigue Behavior of Dissimilar Welded Monel400 and SS316 by Frictions Stir Welding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aboozar%20Aghaei">Aboozar Aghaei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, the dissimilar Monel400 and SS316 were joined by friction stir welding (FSW). The applied rotating speed was 400 rpm, whereas the traverse speed varied between 50 and 150 mm/min. At a constant rotating speed, the sound welds were obtained at the welding speeds of 50 and 100 mm/min. However, a groove-like defect was formed when the welding speed exceeded 100 mm/min. The mechanical properties of the joints were evaluated using tensile and fatigue tests. The fatigue strength of dissimilar FSWed specimens was higher than that of both Monel400 and SS316. To study the failure behavior of FSWed specimens, the fracture surfaces were analyzed using a scanning electron microscope (SEM). The failure analysis indicates that different mechanisms may contribute to the fracture of welds. This was attributed to the dissimilar characteristics of dissimilar materials exhibiting different failure behaviors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=frictions%20stir%20welding%20%28FSW%29" title="frictions stir welding (FSW)">frictions stir welding (FSW)</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=Monel400" title=" Monel400"> Monel400</a> </p> <a href="https://publications.waset.org/abstracts/166167/fatigue-behavior-of-dissimilar-welded-monel400-and-ss316-by-frictions-stir-welding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166167.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">83</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">57</span> Fatigue Behavior of Dissimilar Welded Monel400 and SS316 by Friction Stir Welding</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aboozar%20Aghaei">Aboozar Aghaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamran%20Dehghani"> Kamran Dehghani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, the dissimilar Monel400 and SS316 were joined by friction stir welding (FSW). The applied rotating speed was 400 rpm, whereas the traverse speed varied between 50 and 150 mm/min. At a constant rotating speed, the sound welds were obtained at the welding speeds of 50 and 100 mm/min. However, a groove-like defect was formed when the welding speed exceeded 100 mm/min. The mechanical properties of the joints were evaluated using tensile and fatigue tests. The fatigue strength of dissimilar FSWed specimens was higher than that of both Monel400 and SS316. To study the failure behavior of FSWed specimens, the fracture surfaces were analyzed using a scanning electron microscope (SEM). The failure analysis indicates that different mechanisms may contribute to the fracture of welds. This was attributed to the dissimilar characteristics of dissimilar materials exhibiting different failure behaviors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=frictions%20stir%20welding" title="frictions stir welding">frictions stir welding</a>, <a href="https://publications.waset.org/abstracts/search?q=stainless%20steel" title=" stainless steel"> stainless steel</a>, <a href="https://publications.waset.org/abstracts/search?q=Monel400" title=" Monel400"> Monel400</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a> </p> <a href="https://publications.waset.org/abstracts/166000/fatigue-behavior-of-dissimilar-welded-monel400-and-ss316-by-friction-stir-welding" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166000.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">87</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">56</span> Correlative Study of Serum Interleukin-18 and Disease Activity, Functional Disability and Quality of Life in Rheumatoid Arthritis Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamdy%20Khamis%20Korayem">Hamdy Khamis Korayem</a>, <a href="https://publications.waset.org/abstracts/search?q=Manal%20Yehia%20Tayel"> Manal Yehia Tayel</a>, <a href="https://publications.waset.org/abstracts/search?q=Abeer%20Shawky%20El%20Hadedy"> Abeer Shawky El Hadedy</a>, <a href="https://publications.waset.org/abstracts/search?q=Emmanuel%20Kamal%20Aziz%20Saba"> Emmanuel Kamal Aziz Saba</a>, <a href="https://publications.waset.org/abstracts/search?q=Shimaa%20Badr%20Abdelnaby%20Badr"> Shimaa Badr Abdelnaby Badr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the current study was to demonstrate whether serum Interleukin-18 (IL-18) is increased in rheumatoid arthritis (RA) and its correlation with disease activity, functional disability and quality of life in RA patients. The study included 30 RA patients and 20 healthy normal control subjects. The RA patients were diagnosed according to the 2010 ACR/EULAR classification criteria for RA with the exclusion of those who had diabetes mellitus, endocrine disorders, associated rheumatologic diseases, viral hepatitis B or C and other diseases with increased serum IL-18 level. All patients were subjected to clinical evaluation of the musculoskeletal system. Disease activity was assessed by disease activity score 28 with 4 variables (DAS 28). Functional disability was assessed by health assessment questionnaire disability index (HAQ-DI). The quality of life was assessed by Short form-36 (SF-36) questionnaire. Radiological assessment of both hands and feet by Sharp/van der Heijde (SvH) scoring method. Laboratory parameters including erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), rheumatoid factor (RF) and anti-cyclic citrullinated peptide antibody (ACPA) were assessed in patients and serum level of IL-18 in both patients and control subjects. There was no statistically significant difference between patient and control group as regards age and sex. Among patients, 29 % were females and the age range was between 25 to 55 years. Extra-articular manifestations were presented in 56.7% of the patients. The mean of DAS 28 score was 5.73±1.46 and that of HAQ-DI was 1.22±0.72 while that of SF-36 was 40.03±13.96. The level of serum IL-18 was significantly higher in patients than in the control subjects (P= 0.030). Serum IL-18 was correlated with ACPA among the patient group. There were no statistically significant correlations between serum IL-18 and DAS28, HAQ-DI, SF-36, total SvH score and the other laboratory results. In conclusion, IL-18 is significantly higher in RA patient than in healthy control subjects and positively correlated with ACPA level. IL-18 is associated with extra-articular manifestations. However, it is not correlated with other laboratory parameters, disease activity, functional disability, quality of life nor radiological severity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=disease%20activity%20score" title="disease activity score">disease activity score</a>, <a href="https://publications.waset.org/abstracts/search?q=Interleukin-18" title=" Interleukin-18"> Interleukin-18</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20of%20life%20assessment" title=" quality of life assessment"> quality of life assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=rheumatoid%20arthritis" title=" rheumatoid arthritis "> rheumatoid arthritis </a> </p> <a href="https://publications.waset.org/abstracts/46516/correlative-study-of-serum-interleukin-18-and-disease-activity-functional-disability-and-quality-of-life-in-rheumatoid-arthritis-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46516.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">325</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">55</span> Experimental Investigation of Natural Frequency and Forced Vibration of Euler-Bernoulli Beam under Displacement of Concentrated Mass and Load</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aref%20Aasi">Aref Aasi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sadegh%20Mehdi%20Aghaei"> Sadegh Mehdi Aghaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Balaji%20Panchapakesan"> Balaji Panchapakesan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work aims to evaluate the free and forced vibration of a beam with two end joints subjected to a concentrated moving mass and a load using the Euler-Bernoulli method. The natural frequency is calculated for different locations of the concentrated mass and load on the beam. The analytical results are verified by the experimental data. The variations of natural frequency as a function of the location of the mass, the effect of the forced frequency on the vibrational amplitude, and the displacement amplitude versus time are investigated. It is discovered that as the concentrated mass moves toward the center of the beam, the natural frequency of the beam and the relative error between experimental and analytical data decreases. There is a close resemblance between analytical data and experimental observations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Euler-Bernoulli%20beam" title="Euler-Bernoulli beam">Euler-Bernoulli beam</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20frequency" title=" natural frequency"> natural frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=forced%20vibration" title=" forced vibration"> forced vibration</a>, <a href="https://publications.waset.org/abstracts/search?q=experimental%20setup" title=" experimental setup"> experimental setup</a> </p> <a href="https://publications.waset.org/abstracts/144338/experimental-investigation-of-natural-frequency-and-forced-vibration-of-euler-bernoulli-beam-under-displacement-of-concentrated-mass-and-load" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144338.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">270</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">54</span> Stability of the Wellhead in the Seabed in One of the Marine Reservoirs of Iran</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdi%20Aghaei">Mahdi Aghaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Saeid%20Jamshidi"> Saeid Jamshidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mastaneh%20Hajipour"> Mastaneh Hajipour</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Effective factors on the mechanical wellbore stability are divided in to two categories: 1) Controllable factors, 2) Uncontrollable factors. The purpose of geo-mechanical modeling of wells is to determine the limit of controlled parameters change based on the stress regime at each point and by solving the governing equations the pore-elastic environment around the well. In this research, the mechanical analysis of wellbore stability was carried out for Soroush oilfield. For this purpose, the geo-mechanical model of the field is made using available data. This model provides the necessary parameters for obtaining the distribution of stress around the wellbore. Initially, a basic model was designed to perform various analysis, based on obtained data, using Abaqus software. All of the subsequent sensitivity analysis such as sensitivity analysis on porosity, permeability, etc. was done on the same basic model. The results obtained from these analysis gives various result such as: with the constant geomechanical parameters, and sensitivity analysis on porosity permeability is ineffective. After the most important parameters affecting the wellbore stability and instability are geo-mechanical parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wellbore%20stability" title="wellbore stability">wellbore stability</a>, <a href="https://publications.waset.org/abstracts/search?q=movement" title=" movement"> movement</a>, <a href="https://publications.waset.org/abstracts/search?q=stress" title=" stress"> stress</a>, <a href="https://publications.waset.org/abstracts/search?q=instability" title=" instability"> instability</a> </p> <a href="https://publications.waset.org/abstracts/142512/stability-of-the-wellhead-in-the-seabed-in-one-of-the-marine-reservoirs-of-iran" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142512.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">203</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">53</span> Physicochemical Characterization of Mercerized Cellulose-Supported Nickel-Oxide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sherif%20M.%20A.%20S.%20Keshk">Sherif M. A. S. Keshk</a>, <a href="https://publications.waset.org/abstracts/search?q=Hisham%20S.%20M.%20Abd-Rabboh"> Hisham S. M. Abd-Rabboh</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20S.%20Hamdy"> Mohamed S. Hamdy</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20H.%20A.%20Badr"> Ibrahim H. A. Badr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microwave radiation was applied to synthesize nanoparticles of nickel oxide supported on pretreated cellulose with metal acetate in the presence of NaOH. Optimization, in terms of irradiation time and metal concentration, was investigated. FT-IR spectrum of cellulose/NiO spectrum shows a band at 445 cm^-1 that is related to the Ni–O stretching vibration of NiO6 octahedral in the cubic NiO structure. cellulose/NiO showed similar XRD pattern of cellulose I and exhibited sharpened reflection peak at 2q = 29.8°, corresponding to (111) plane of NiO, with two weak broad peaks at 48.5°, and 49.2°, representing (222) planes of NiO. XPS spectrum of mercerized cellulose/NiO composite showed did not show any peaks corresponding to Na ion. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cellulose" title="cellulose">cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=mercerized%20cellulose" title=" mercerized cellulose"> mercerized cellulose</a>, <a href="https://publications.waset.org/abstracts/search?q=cellulose%2Fzinc%20and%20nickeloxides%20composite" title=" cellulose/zinc and nickeloxides composite"> cellulose/zinc and nickeloxides composite</a>, <a href="https://publications.waset.org/abstracts/search?q=FTIR" title=" FTIR"> FTIR</a>, <a href="https://publications.waset.org/abstracts/search?q=XRD" title=" XRD"> XRD</a>, <a href="https://publications.waset.org/abstracts/search?q=XPS" title=" XPS"> XPS</a>, <a href="https://publications.waset.org/abstracts/search?q=SEM" title=" SEM"> SEM</a>, <a href="https://publications.waset.org/abstracts/search?q=Raman%20spectrum" title=" Raman spectrum"> Raman spectrum</a> </p> <a href="https://publications.waset.org/abstracts/38240/physicochemical-characterization-of-mercerized-cellulose-supported-nickel-oxide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38240.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">442</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">52</span> Web-Based Intervention for Addressing Cigarette Smoking Prevention among College Students </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farzad%20Jalilian">Farzad Jalilian</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Mirzaei%20Alavijeh"> Mehdi Mirzaei Alavijeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Ahmadpanah"> Mohammad Ahmadpanah</a>, <a href="https://publications.waset.org/abstracts/search?q=Behzad%20Karami%20Matin"> Behzad Karami Matin</a>, <a href="https://publications.waset.org/abstracts/search?q=Abbas%20Aghaei"> Abbas Aghaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Ali%20Eslami"> Ahmad Ali Eslami</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Smoking is introduced as one of the main risky factors to develop different types of diseases around the world, especially related to non-contagious diseases. The goal of the present study was assessment of the effectiveness of web based education program to prevent cigarette smoking among college students. Methods: In a randomized controlled trial, during 2014, 150 male college students in Isfahan and Kermanshah University of medical sciences were assigned to intervention group (receiving web based education program) and control groups. The study information was analyzed by SPSS software version 21 using cross-tabulation, t-test, repeated measures and GEE. Results: It was found significantly that average response for attitude towards cigarette smoking and sensation seeking after education reduced (P < 0.05). After intervention there was no significant difference between intervention and control group of cigarette smoking (P > 0.05). Conclusion: web based education have usefulness to reduce belief towards cigarette smoking. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=web-based%20intervention" title="web-based intervention">web-based intervention</a>, <a href="https://publications.waset.org/abstracts/search?q=smoking" title=" smoking"> smoking</a>, <a href="https://publications.waset.org/abstracts/search?q=students" title=" students"> students</a>, <a href="https://publications.waset.org/abstracts/search?q=Iran" title=" Iran"> Iran</a> </p> <a href="https://publications.waset.org/abstracts/33736/web-based-intervention-for-addressing-cigarette-smoking-prevention-among-college-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33736.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">51</span> Factors Related with Self-Care Behaviors among Iranian Type 2 Diabetic Patients: An Application of Health Belief Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Soroush">Ali Soroush</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Mirzaei%20Alavijeh"> Mehdi Mirzaei Alavijeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Touraj%20Ahmadi%20Jouybari"> Touraj Ahmadi Jouybari</a>, <a href="https://publications.waset.org/abstracts/search?q=Fazel%20Zinat-Motlagh"> Fazel Zinat-Motlagh</a>, <a href="https://publications.waset.org/abstracts/search?q=Abbas%20Aghaei"> Abbas Aghaei</a>, <a href="https://publications.waset.org/abstracts/search?q=Mari%20Ataee"> Mari Ataee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Diabetes is a disease with long cardiovascular, renal, ophthalmic and neural complications. It is prevalent all around the world including Iran, and its prevalence is increasing. The aim of this study was to determine the factors related to self-care behavior based on health belief model among sample of Iranian diabetic patients. This cross-sectional study was conducted among 301 type 2 diabetic patients in Gachsaran, Iran. Data collection was based on an interview and the data were analyzed by SPSS version 20 using ANOVA, t-tests, Pearson correlation, and linear regression statistical tests at 95% significant level. Linear regression analyses showed the health belief model variables accounted for 29% of the variation in self-care behavior; and perceived severity and perceived self-efficacy are more influential predictors on self-care behavior among diabetic patients. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diabetes" title="diabetes">diabetes</a>, <a href="https://publications.waset.org/abstracts/search?q=patients" title=" patients"> patients</a>, <a href="https://publications.waset.org/abstracts/search?q=self-care%20behaviors" title=" self-care behaviors"> self-care behaviors</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20belief%20model" title=" health belief model"> health belief model</a> </p> <a href="https://publications.waset.org/abstracts/11263/factors-related-with-self-care-behaviors-among-iranian-type-2-diabetic-patients-an-application-of-health-belief-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11263.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">468</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">50</span> A Method to Saturation Modeling of Synchronous Machines in d-q Axes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Arbi%20Khlifi">Mohamed Arbi Khlifi</a>, <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari"> Badr M. Alshammari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper discusses the general methods to saturation in the steady-state, two axis (d & q) frame models of synchronous machines. In particular, the important role of the magnetic coupling between the d-q axes (cross-magnetizing phenomenon), is demonstrated. For that purpose, distinct methods of saturation modeling of dumper synchronous machine with cross-saturation are identified, and detailed models synthesis in d-q axes. A number of models are given in the final developed form. The procedure and the novel models are verified by a critical application to prove the validity of the method and the equivalence between all developed models is reported. Advantages of some of the models over the existing ones and their applicability are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cross-magnetizing" title="cross-magnetizing">cross-magnetizing</a>, <a href="https://publications.waset.org/abstracts/search?q=models%20synthesis" title=" models synthesis"> models synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=synchronous%20machine" title=" synchronous machine"> synchronous machine</a>, <a href="https://publications.waset.org/abstracts/search?q=saturated%20modeling" title=" saturated modeling"> saturated modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=state-space%20vectors" title=" state-space vectors"> state-space vectors</a> </p> <a href="https://publications.waset.org/abstracts/31947/a-method-to-saturation-modeling-of-synchronous-machines-in-d-q-axes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/31947.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">454</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">49</span> Effectiveness of Adopting Software Quality Frameworks in Software Organizations: A Qualitative Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20K.%20Amer">Sarah K. Amer</a>, <a href="https://publications.waset.org/abstracts/search?q=Nagwa%20Badr"> Nagwa Badr</a>, <a href="https://publications.waset.org/abstracts/search?q=Osman%20Ibrahim"> Osman Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Hamad"> Ahmed Hamad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper surveys the effectiveness of software process quality assurance frameworks, with some focus on Capability Maturity Model Integration (CMMI) - a framework that has become widely adopted in software organizations. The importance of quality improvement in software development, and the differences in the outcomes of quality framework implementation between Middle Eastern and North African (MENA-region) countries and non-MENA-region countries are discussed. The greatest challenges met in the MENA region are identified, with particular focus on Egypt and its rising software development industry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=software%20quality" title="software quality">software quality</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20process%20improvement" title=" software process improvement"> software process improvement</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20development%20methodologies" title=" software development methodologies"> software development methodologies</a>, <a href="https://publications.waset.org/abstracts/search?q=capability%20maturity%20model%20integration" title=" capability maturity model integration"> capability maturity model integration</a> </p> <a href="https://publications.waset.org/abstracts/54810/effectiveness-of-adopting-software-quality-frameworks-in-software-organizations-a-qualitative-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/54810.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">354</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">48</span> The Effect of Simultaneous Doping of Silicate Bioglass with Alkaline and Alkaline-Earth Elements on Biological Behavior</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tannaz%20Alimardani">Tannaz Alimardani</a>, <a href="https://publications.waset.org/abstracts/search?q=Amirhossein%20Moghanian"> Amirhossein Moghanian</a>, <a href="https://publications.waset.org/abstracts/search?q=Morteza%20Elsa"> Morteza Elsa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Bioactive glasses (BGs) are a group of surface-reactive biomaterials used in clinical applications as implants or filler materials in the human body to repair and replace diseased or damaged bone. Sol-gel technique was employed to prepare a SiO₂-CaO-P₂O₅ glass with a nominal composition of 58S BG with the addition of Sr and Li modifiers which imparts special properties to the BG. The effect of simultaneous addition of Sr and Li on bioactivity and biocompatibility, proliferation, alkaline phosphatase (ALP) activity of osteoblast cell line MC3T3-E1 and antibacterial property against methicillin-resistant Staphylococcus aureus (MRSA) bacteria were examined. BGs were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy before and after soaking the samples in the simulated body fluid (SBF) for different time intervals to characterize the formation of hydroxyapatite (HA) formed on the surface of BGs. Structural characterization indicated that the simultaneous presence of 5% Sr and 5% Li in 58S-BG composition not only did not retard HA formation because of the opposite effect of Sr and Li of the dissolution of BG in the SBF, but also stimulated the differentiation and proliferation of MC3T3-E1s. Moreover, the presence of Sr and Li on the dissolution of the ions resulted in an increase in the mean number of DAPI-labeled nuclei which was in good agreement with the live/dead assay. The result of antibacterial tests revealed that Sr and Li-substituted 58S bioactive glass exhibited a potential antibacterial effect against MRSA bacteria. Because of optimal proliferation and ALP activity of MC3T3-E1cells, proper bioactivity and high antibacterial potential against MRSA, BG-5/5 is suggested as a multifunctional candidate for bone tissue engineering. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alkaline" title="alkaline">alkaline</a>, <a href="https://publications.waset.org/abstracts/search?q=alkaline%20earth" title=" alkaline earth"> alkaline earth</a>, <a href="https://publications.waset.org/abstracts/search?q=bioglass" title=" bioglass"> bioglass</a>, <a href="https://publications.waset.org/abstracts/search?q=co-doping" title=" co-doping"> co-doping</a>, <a href="https://publications.waset.org/abstracts/search?q=ion%20release" title=" ion release"> ion release</a> </p> <a href="https://publications.waset.org/abstracts/108131/the-effect-of-simultaneous-doping-of-silicate-bioglass-with-alkaline-and-alkaline-earth-elements-on-biological-behavior" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/108131.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">224</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">47</span> Backstepping Controller for a Variable Wind Speed Energy Conversion System Based on a DFIG </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sara%20Mensou">Sara Mensou</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Essadki"> Ahmed Essadki</a>, <a href="https://publications.waset.org/abstracts/search?q=Issam%20Minka"> Issam Minka</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamou%20Nasser"> Tamou Nasser</a>, <a href="https://publications.waset.org/abstracts/search?q=Badr%20Bououlid%20Idrissi"> Badr Bououlid Idrissi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper we present a contribution for the modeling and control of wind energy conversion system based on a Doubly Fed Induction Generator (DFIG). Since the wind speed is random the system has to produce an optimal electrical power to the Network and ensures important strength and stability. In this work, the Backstepping controller is used to control the generator via two converter witch placed a DC bus capacitor and connected to the grid by a Filter R-L, in order to optimize capture wind energy. All is simulated and presented under MATLAB/Simulink Software to show performance and robustness of the proposed controller. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wind%20turbine" title="wind turbine">wind turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=doubly%20fed%20induction%20generator" title=" doubly fed induction generator"> doubly fed induction generator</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT%20control" title=" MPPT control"> MPPT control</a>, <a href="https://publications.waset.org/abstracts/search?q=backstepping%20controller" title=" backstepping controller"> backstepping controller</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20converter" title=" power converter"> power converter</a> </p> <a href="https://publications.waset.org/abstracts/98603/backstepping-controller-for-a-variable-wind-speed-energy-conversion-system-based-on-a-dfig" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/98603.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">189</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">46</span> Contractor Selection by Using Analytical Network Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20A.%20Al-Jehani">Badr A. Al-Jehani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, contractor selection is a critical activity of the project owner. Selecting the right contractor is essential to the project manager for the success of the project, and this cab happens by using the proper selecting method. Traditionally, the contractor is being selected based on his offered bid price. This approach focuses only on the price factor and forgetting other essential factors for the success of the project. In this research paper, the Analytic Network Process (ANP) method is used as a decision tool model to select the most appropriate contractor. This decision-making method can help the clients who work in the construction industry to identify contractors who are capable of delivering satisfactory outcomes. Moreover, this research paper provides a case study of selecting the proper contractor among three contractors by using ANP method. The case study identifies and computes the relative weight of the eight criteria and eleven sub-criteria using a questionnaire. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=contractor%20selection" title="contractor selection">contractor selection</a>, <a href="https://publications.waset.org/abstracts/search?q=project%20management" title=" project management"> project management</a>, <a href="https://publications.waset.org/abstracts/search?q=decision-making" title=" decision-making"> decision-making</a>, <a href="https://publications.waset.org/abstracts/search?q=bidding" title=" bidding"> bidding</a> </p> <a href="https://publications.waset.org/abstracts/156178/contractor-selection-by-using-analytical-network-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156178.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">45</span> Improved Artificial Bee Colony Algorithm for Non-Convex Economic Power Dispatch Problem </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari">Badr M. Alshammari</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Guesmi"> T. Guesmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study presents a modified version of the artificial bee colony (ABC) algorithm by including a local search technique for solving the non-convex economic power dispatch problem. The local search step is incorporated at the end of each iteration. Total system losses, valve-point loading effects and prohibited operating zones have been incorporated in the problem formulation. Thus, the problem becomes highly nonlinear and with discontinuous objective function. The proposed technique is validated using an IEEE benchmark system with ten thermal units. Simulation results demonstrate that the proposed optimization algorithm has better convergence characteristics in comparison with the original ABC algorithm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=economic%20power%20dispatch" title="economic power dispatch">economic power dispatch</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial%20bee%20colony" title=" artificial bee colony"> artificial bee colony</a>, <a href="https://publications.waset.org/abstracts/search?q=valve-point%20loading%20effects" title=" valve-point loading effects"> valve-point loading effects</a>, <a href="https://publications.waset.org/abstracts/search?q=prohibited%20operating%20zones" title=" prohibited operating zones"> prohibited operating zones</a> </p> <a href="https://publications.waset.org/abstracts/89937/improved-artificial-bee-colony-algorithm-for-non-convex-economic-power-dispatch-problem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/89937.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">257</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">44</span> Rooting Out Breast Cancer by Repressing ER Gene Expression: Correlating Bioactivity of Pomegranate Rind with Chemical Constituents Identified by HPLC-MS/MS</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alaa%20M.%20M.%20Badr%20Eldin">Alaa M. M. Badr Eldin</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20I.%20Ezzat"> Marwa I. Ezzat</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20S.%20Sedeek"> Mohammed S. Sedeek</a>, <a href="https://publications.waset.org/abstracts/search?q=Manal%20S.%20Afifi"> Manal S. Afifi</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20M.%20Sabry"> Omar M. Sabry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cytotoxic activity of the total methanol extract against breast cancer cell line MCF-7 was amazing IC50 at 54 ug/ml. 130 polyphenolic compounds were tentatively identified in pomegranate peel (Punica granatum L.) methanol extract using HPLC-MS/MS technique. The antiestrogenic activity of the polyphenolic constituents found in pomegranate extract was confirmed experimentally in-vitro and by the in-silico molecular docking using gallagic acid, ellagic acid, and Punicalagin as these are considered model compounds confirmed in pomegranate peel extract. The methanolic extract was found to suppress ER, TGF-β, and NF-kB in-vitro gene expression strongly, and that was verified by qPCR and Western Blot gel electrophoresis techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HPLC-MS%2FMS" title="HPLC-MS/MS">HPLC-MS/MS</a>, <a href="https://publications.waset.org/abstracts/search?q=pomegranate" title=" pomegranate"> pomegranate</a>, <a href="https://publications.waset.org/abstracts/search?q=breast%20cancer" title=" breast cancer"> breast cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=ovarian%20cancer" title=" ovarian cancer"> ovarian cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=ER" title=" ER"> ER</a>, <a href="https://publications.waset.org/abstracts/search?q=TGF-%CE%B2" title=" TGF-β"> TGF-β</a>, <a href="https://publications.waset.org/abstracts/search?q=NF-kB" title=" NF-kB"> NF-kB</a> </p> <a href="https://publications.waset.org/abstracts/158003/rooting-out-breast-cancer-by-repressing-er-gene-expression-correlating-bioactivity-of-pomegranate-rind-with-chemical-constituents-identified-by-hplc-msms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158003.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">102</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">43</span> Small Wind Turbine Hybrid System for Remote Application: Egyptian Case Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Badr">M. A. Badr</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20N.%20Mohib"> A. N. Mohib</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20Ibrahim"> M. M. Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this research is to study the technical and economic performance of wind/diesel/battery (W/D/B) system supplying a remote small gathering of six families using HOMER software package. The electrical energy is to cater for the basic needs for which the daily load pattern is estimated. Net Present Cost (NPC) and Cost of Energy (COE) are used as economic criteria, while the measure of performance is % of power shortage. Technical and economic parameters are defined to estimate the feasibility of the system under study. Optimum system configurations are estimated for two sites. Using HOMER software, the simulation results showed that W/D/B systems are economical for the assumed community sites as the price of generated electricity is about 0.308 $/kWh, without taking external benefits into considerations. W/D/B systems are more economical than W/B or diesel alone systems, as the COE is 0.86 $/kWh for W/B and 0.357 $/kWh for diesel alone. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optimum%20energy%20systems" title="optimum energy systems">optimum energy systems</a>, <a href="https://publications.waset.org/abstracts/search?q=remote%20electrification" title=" remote electrification"> remote electrification</a>, <a href="https://publications.waset.org/abstracts/search?q=renewable%20energy" title=" renewable energy"> renewable energy</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20turbine%20systems" title=" wind turbine systems"> wind turbine systems</a> </p> <a href="https://publications.waset.org/abstracts/12793/small-wind-turbine-hybrid-system-for-remote-application-egyptian-case-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12793.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">402</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">42</span> Triggering Apoptosis to Uproot Breast Cancer: HPLC-MS/MS Profiling, in-vitro and in-silico Fascinating Results of Polyphenolics in Pomegranate Rind Extract</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alaa%20M.%20Badr%20Eldin">Alaa M. Badr Eldin</a>, <a href="https://publications.waset.org/abstracts/search?q=Mayar%20M.%20Shahen"> Mayar M. Shahen</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20S.%20Sedeek"> Mohammed S. Sedeek</a>, <a href="https://publications.waset.org/abstracts/search?q=Marwa%20I.%20Ezzat"> Marwa I. Ezzat</a>, <a href="https://publications.waset.org/abstracts/search?q=Sawsan%20M.%20ElSonbaty"> Sawsan M. ElSonbaty</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammed%20A.%20Saad"> Muhammed A. Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Manal%20S.%20Afifi"> Manal S. Afifi</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20M.%20Sabry"> Omar M. Sabry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Using HPLC-MS/MS technique, 133 polyphenolic compounds were identified in the methanol extract of pomegranate rind (Punica granatum L.). In-vitro cytotoxic activity against breast cancer cell line MCF-7 was investigated, with an IC50 of 54 ug/ml. In-silico molecular docking using ellagic acid, gallagic acid, and Punicalagin as model compounds identified in pomegranate rind extract confirmed the intriguing anti-estrogenic action of the key polyphenolic components in pomegranate rind extract. Surprisingly, taxol showed low activity compared to pomegranate compounds as ERα antagonist and ERβ agonist. Pomegranate rind extract enhanced apoptosis of breast cancer cells through upregulation of the caspase-3 expression and downregulation of NF-κB transcription factor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=HPLC-MS%2FMS" title="HPLC-MS/MS">HPLC-MS/MS</a>, <a href="https://publications.waset.org/abstracts/search?q=pomegranate%20rind" title=" pomegranate rind"> pomegranate rind</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title=" cytotoxicity"> cytotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=MCF-7" title=" MCF-7"> MCF-7</a>, <a href="https://publications.waset.org/abstracts/search?q=ER" title=" ER"> ER</a>, <a href="https://publications.waset.org/abstracts/search?q=caspase-3" title=" caspase-3"> caspase-3</a>, <a href="https://publications.waset.org/abstracts/search?q=NF-kB" title=" NF-kB"> NF-kB</a> </p> <a href="https://publications.waset.org/abstracts/163413/triggering-apoptosis-to-uproot-breast-cancer-hplc-msms-profiling-in-vitro-and-in-silico-fascinating-results-of-polyphenolics-in-pomegranate-rind-extract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163413.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">116</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">41</span> Analysis of DC\DC Converter of Photovoltaic System with MPPT Algorithms Comparison</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari">Badr M. Alshammari</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20A.%20Khlifi"> Mohamed A. Khlifi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the analysis of DC/DC converter including a comparative study of control methods to extract the maximum power and to track the maximum power point (MPP) from photovoltaic (PV) systems under changeable environmental conditions. This paper proposes two methods of maximum power point tracking algorithm for photovoltaic systems, based on the first hand on P&O control and the other hand on the first order IC. The MPPT system ensures that solar cells can deliver the maximum power possible to the load. Different algorithms are used to design it. Here we compare them and simulate the photovoltaic system with two algorithms. The algorithms are used to control the duty cycle of a DC-DC converter in order to boost the output voltage of the PV generator and guarantee the operation of the solar panels in the Maximum Power Point (MPP). Simulation and experimental results show that the proposed algorithms can effectively improve the efficiency of a photovoltaic array output. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=solar%20cell" title="solar cell">solar cell</a>, <a href="https://publications.waset.org/abstracts/search?q=DC%2FDC%20boost%20converter" title=" DC/DC boost converter"> DC/DC boost converter</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT" title=" MPPT"> MPPT</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20system" title=" photovoltaic system"> photovoltaic system</a> </p> <a href="https://publications.waset.org/abstracts/74633/analysis-of-dcdc-converter-of-photovoltaic-system-with-mppt-algorithms-comparison" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74633.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">202</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">40</span> Dynamic Thermal Modelling of a PEMFC-Type Fuel Cell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marco%20Avila%20Lopez">Marco Avila Lopez</a>, <a href="https://publications.waset.org/abstracts/search?q=Hasnae%20Ait-Douchi"> Hasnae Ait-Douchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Silvia%20De%20Los%20Santos"> Silvia De Los Santos</a>, <a href="https://publications.waset.org/abstracts/search?q=Badr%20Eddine%20Lebrouhi"> Badr Eddine Lebrouhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Pamela%20Ram%C3%ADrez%20Vidal"> Pamela Ramírez Vidal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the context of the energy transition, fuel cell technology has emerged as a solution for harnessing hydrogen energy and mitigating greenhouse gas emissions. An in-depth study was conducted on a PEMFC-type fuel cell, with an initiation of an analysis of its operational principles and constituent components. Subsequently, the modelling of the fuel cell was undertaken using the Python programming language, encompassing both steady-state and transient regimes. In the case of the steady-state regime, the physical and electrochemical phenomena occurring within the fuel cell were modelled, with the assumption of uniform temperature throughout all cell compartments. Parametric identification was carried out, resulting in a remarkable mean error of only 1.62% when the model results were compared to experimental data documented in the literature. The dynamic model that was developed enabled the scrutiny of the fuel cell's response in terms of temperature and voltage under varying current conditions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fuel%20cell" title="fuel cell">fuel cell</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic" title=" dynamic"> dynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20model" title=" thermal model"> thermal model</a>, <a href="https://publications.waset.org/abstracts/search?q=PEMFC" title=" PEMFC"> PEMFC</a> </p> <a href="https://publications.waset.org/abstracts/176646/dynamic-thermal-modelling-of-a-pemfc-type-fuel-cell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176646.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">81</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">39</span> Preparation vADL.net: A Software Architecture Tool with Support to All of Architectural Concepts Title </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adel%20Smeda">Adel Smeda</a>, <a href="https://publications.waset.org/abstracts/search?q=Badr%20Najep"> Badr Najep</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Software architecture is a method of describing the architecture of a software system at a high level of abstraction. It represents a common abstraction of a system that stakeholders can use as a basis for mutual understanding, negotiation, consensus, and communication. It also manifests the earliest design decisions about a system, and these early bindings carry weight far out of proportion to their individual gravity with respect to the system's remaining development, its deployment, and its maintenance life, therefore it is the earliest point at which design decisions governing the system to be built can be analyzed. In this paper, we present a tool to model the architecture of software systems. It represents the first method by which system defects can be detected, and provide a clear representation of a system’s components and interactions at a high level of abstraction. It can be distinguished from other tools by its support to all software architecture elements. The tool is built using VB.net 2010. We used this tool to describe two well know systems, i.e. Capitalize and Client/Server, and the descriptions we obtained support all architectural elements of the two systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=software%20architecture" title="software architecture">software architecture</a>, <a href="https://publications.waset.org/abstracts/search?q=architecture%20description%20languages" title=" architecture description languages"> architecture description languages</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a> </p> <a href="https://publications.waset.org/abstracts/21754/preparation-vadlnet-a-software-architecture-tool-with-support-to-all-of-architectural-concepts-title" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21754.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">466</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">38</span> Adsorption of Iodine from Aqueous Solution on Modified Silica Gel with Cyclodextrin Derivatives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Raied">Raied</a>, <a href="https://publications.waset.org/abstracts/search?q=Badr%20Al-Fulaiti"> Badr Al-Fulaiti</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20I.%20El-Shafey"> E. I. El-Shafey</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cyclodextrin (CD) derivatives (αCD, βCD, ϒCD and hp-βCD) were successfully immobilized on silica gel surface via epichlorohydrin as a cross linker. The ratio of silica to CD was optimized in preliminary experiments based on best performance of iodine adsorption capacity. Selected adsorbents with ratios of silica to CD derivatives, in this study, include Si-αCD (3:2), Si-βCD (4:1), Si-ϒCD (4:1) and Si-hp-βCD (4:1). The adsorption of iodine (I2/KI) solution was investigated in terms of initial pH, contact time, iodine concentration and temperature. No significant variations was noticed for iodine adsorption at different pH values, thus, initial pH 6 was selected for further studies. Equilibrium adsorption was reached faster on Si-hp-βCD than other adsorbents with kinetic adsorption data fitting well pseudo second order model. Activation energy (Ea) was found to be in the range of 12.7 - 23.4 kJ/mol. Equilibrium adsorption data were found to fit well the Langmuir adsorption model with lower uptake as temperature rises. Iodine uptake follows the order: Si-hp-βCD (714 mg/g) >Si-αCD (625 mg/g) >Si-βCD (555.6 mg/g)> Si-ϒCD (435 mg/g). Thermodynamic study showed that iodine adsorption is exothermic and spontaneous. Adsorbents reuse exhibited excellent performance for iodine adsorption with a decrease in iodine uptake of ~ 2- 4 % in the third adsorption cycle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption" title="adsorption">adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=iodine" title=" iodine"> iodine</a>, <a href="https://publications.waset.org/abstracts/search?q=silica" title=" silica"> silica</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclodextrin" title=" cyclodextrin"> cyclodextrin</a>, <a href="https://publications.waset.org/abstracts/search?q=functionalization" title=" functionalization"> functionalization</a>, <a href="https://publications.waset.org/abstracts/search?q=epichlorohydrin" title=" epichlorohydrin"> epichlorohydrin</a> </p> <a href="https://publications.waset.org/abstracts/144749/adsorption-of-iodine-from-aqueous-solution-on-modified-silica-gel-with-cyclodextrin-derivatives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144749.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">132</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">37</span> Optimal Design of Multimachine Power System Stabilizers Using Improved Multi-Objective Particle Swarm Optimization Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari">Badr M. Alshammari</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Guesmi"> T. Guesmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, the concept of a non-dominated sorting multi-objective particle swarm optimization with local search (NSPSO-LS) is presented for the optimal design of multimachine power system stabilizers (PSSs). The controller design is formulated as an optimization problem in order to shift the system electromechanical modes in a pre-specified region in the s-plan. A composite set of objective functions comprising the damping factor and the damping ratio of the undamped and lightly damped electromechanical modes is considered. The performance of the proposed optimization algorithm is verified for the 3-machine 9-bus system. Simulation results based on eigenvalue analysis and nonlinear time-domain simulation show the potential and superiority of the NSPSO-LS algorithm in tuning PSSs over a wide range of loading conditions and large disturbance compared to the classic PSO technique and genetic algorithms. <p class="card-text"><strong>Keywords:</strong> <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=particle%20swarm%20optimization" title=" particle swarm optimization"> particle swarm optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20system%20stabilizer" title=" power system stabilizer"> power system stabilizer</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20frequency%20oscillations" title=" low frequency oscillations"> low frequency oscillations</a> </p> <a href="https://publications.waset.org/abstracts/60093/optimal-design-of-multimachine-power-system-stabilizers-using-improved-multi-objective-particle-swarm-optimization-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60093.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">431</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">36</span> Perception of Aerospace Engineering Students in Saudi Arabia on Aviation Sustainability</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20A.%20Al-Harbi">Badr A. Al-Harbi</a>, <a href="https://publications.waset.org/abstracts/search?q=Fahd%20T.%20Abdullah"> Fahd T. Abdullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazen%20T.%20Wali"> Mazen T. Wali</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20W.%20Al-Obaidi"> Mohammed W. Al-Obaidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Reda%20M.%20Bakhdlg"> Reda M. Bakhdlg</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the past few years, the aviation society had demonstrated a huge concern for securing the sustainability of commercial aviation. Future aerospace engineers in Saudi Arabia are expected to play a major role in dealing with these aspects, taking into consideration the expected growth in both traffic, passenger mileage, and fleet expansions in the region. In the present work, the authors investigate the perception of engineering students in the two undergraduate aerospace engineering programs in the Kingdom. A questionnaire was distributed using google forms and targeted approximately 300 students in both programs on several WhatsApp groups. Data collection was stopped after one week when a response rate above 35% was reached. The questionnaire aimed at assessing the students’ awareness of sustainable aviation and associated obstacles. The results obtained from the study indicate the necessity of introducing curricular modifications to address the subject with more targeted extracurricular activities and better use of social media, which is becoming a main source of students’ awareness. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aviation" title="aviation">aviation</a>, <a href="https://publications.waset.org/abstracts/search?q=engineering%20education" title=" engineering education"> engineering education</a>, <a href="https://publications.waset.org/abstracts/search?q=students%E2%80%99%20perception" title=" students’ perception"> students’ perception</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20aviation" title=" sustainable aviation"> sustainable aviation</a> </p> <a href="https://publications.waset.org/abstracts/135680/perception-of-aerospace-engineering-students-in-saudi-arabia-on-aviation-sustainability" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135680.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">157</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">35</span> Interfacing Photovoltaic Systems to the Utility Grid: A Comparative Simulation Study to Mitigate the Impact of Unbalanced Voltage Dips</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari">Badr M. Alshammari</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Rabeh"> A. Rabeh</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20K.%20Mohamed"> A. K. Mohamed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the modeling and the control of a grid-connected photovoltaic system (PVS). Firstly, the MPPT control of the PVS and its associated DC/DC converter has been analyzed in order to extract the maximum of available power. Secondly, the control system of the grid side converter (GSC) which is a three-phase voltage source inverter (VSI) has been presented. A special attention has been paid to the control algorithms of the GSC converter during grid voltages imbalances. Especially, three different control objectives are to achieve; the mitigation of the grid imbalance adverse effects, at the point of common coupling (PCC), on the injected currents, the elimination of double frequency oscillations in active power flow, and the elimination of double frequency oscillations in reactive power flow. Simulation results of two control strategies have been performed via MATLAB software in order to demonstrate the particularities of each control strategy according to power quality standards. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=renewable%20energies" title="renewable energies">renewable energies</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20systems" title=" photovoltaic systems"> photovoltaic systems</a>, <a href="https://publications.waset.org/abstracts/search?q=dc%20link" title=" dc link"> dc link</a>, <a href="https://publications.waset.org/abstracts/search?q=voltage%20source%20inverter" title=" voltage source inverter"> voltage source inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=space%20vector%20SVPWM" title=" space vector SVPWM"> space vector SVPWM</a>, <a href="https://publications.waset.org/abstracts/search?q=unbalanced%20voltage%20dips" title=" unbalanced voltage dips"> unbalanced voltage dips</a>, <a href="https://publications.waset.org/abstracts/search?q=symmetrical%20components" title=" symmetrical components"> symmetrical components</a> </p> <a href="https://publications.waset.org/abstracts/40472/interfacing-photovoltaic-systems-to-the-utility-grid-a-comparative-simulation-study-to-mitigate-the-impact-of-unbalanced-voltage-dips" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40472.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">377</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">34</span> An Improved Particle Swarm Optimization Technique for Combined Economic and Environmental Power Dispatch Including Valve Point Loading Effects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badr%20M.%20Alshammari">Badr M. Alshammari</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Guesmi"> T. Guesmi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the combined economic and emission power dispatch is one of the main problems of electrical power system. It aims to schedule the power generation of generators in order to minimize cost production and emission of harmful gases caused by fossil-fueled thermal units such as CO, CO<sub>2</sub>, NO<sub>x</sub>, and SO<sub>2</sub>. To solve this complicated multi-objective problem, an improved version of the particle swarm optimization technique that includes non-dominated sorting concept has been proposed. Valve point loading effects and system losses have been considered. The three-unit and ten-unit benchmark systems have been used to show the effectiveness of the suggested optimization technique for solving this kind of nonconvex problem. The simulation results have been compared with those obtained using genetic algorithm based method. Comparison results show that the proposed approach can provide a higher quality solution with better performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20dispatch" title="power dispatch">power dispatch</a>, <a href="https://publications.waset.org/abstracts/search?q=valve%20point%20loading%20effects" title=" valve point loading effects"> valve point loading effects</a>, <a href="https://publications.waset.org/abstracts/search?q=multiobjective%20optimization" title=" multiobjective optimization"> multiobjective optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=Pareto%20solutions" title=" Pareto solutions"> Pareto solutions</a> </p> <a href="https://publications.waset.org/abstracts/71249/an-improved-particle-swarm-optimization-technique-for-combined-economic-and-environmental-power-dispatch-including-valve-point-loading-effects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71249.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">273</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=Tannaz%20Aghaei%20Badr&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Tannaz%20Aghaei%20Badr&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Tannaz%20Aghaei%20Badr&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" 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