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Shaaban</title> <meta name="description" content="Search results for: Fatma A. Shaaban"> <meta name="keywords" content="Fatma A. Shaaban"> <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="Fatma A. 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Shaaban"> <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> 131</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Fatma A. Shaaban</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">131</span> Impact of Hepatitis C Virus Chronic Infection on Quality of Life in Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ammal%20M.%20Metwally">Ammal M. Metwally</a>, <a href="https://publications.waset.org/abstracts/search?q=Ghada%20A.%20Abdel-Latif"> Ghada A. Abdel-Latif</a>, <a href="https://publications.waset.org/abstracts/search?q=Walaa%20A.%20Fouad"> Walaa A. Fouad</a>, <a href="https://publications.waset.org/abstracts/search?q=Thanaa%20M.%20Rabah"> Thanaa M. Rabah</a>, <a href="https://publications.waset.org/abstracts/search?q=Amira%20Mohsen"> Amira Mohsen</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20A.%20Shaaban"> Fatma A. Shaaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Iman%20I.%20Salama">Iman I. Salama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study aimed at determining the impact of chronic hepatitis C virus (HCV) infection on patients’ Quality of Life (QoL) , its relation to geographical characteristics of patients, awareness of the disease, treatment regimen, co-morbid psychiatric or other diseases. 457 patients were randomly selected from ten National Treatment Reference Centers of Ministry of Health hospitals from four community locations representing Egypt. Health related QoL assessment questionnaire with the 36-item Short Form used for assessment of the enrolled patients. The study showed no significant difference between HCV patients in different governorates as regards total QoL. Females, illiterate patients and those had bilharziasis, diabetes mellitus, hypertension or were depressed had significantly the lowest QoL score. HCV patients who knew the danger of the disease had significant lower mean score of physical and mental health components. Optimal care of overall well-being of HCV patients requires adequate knowledge of their neurological and psychological status. It is important to know that any patient will need to take the time to know that his new physical limitations do not limit him as a person, as soul, no matter what other people are thinking as a positive hopeful attitude is essential for combating HCV. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hepatitis%20C%20virus%20chronic%20infection%20-%20physical%20health%20component%20and%20mental%20health%20component%20of%20QoL%E2%80%93%20total%20quality%20of%20life" title="hepatitis C virus chronic infection - physical health component and mental health component of QoL– total quality of life">hepatitis C virus chronic infection - physical health component and mental health component of QoL– total quality of life</a> </p> <a href="https://publications.waset.org/abstracts/3583/impact-of-hepatitis-c-virus-chronic-infection-on-quality-of-life-in-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3583.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">449</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">130</span> Development of a Practical Screening Measure for the Prediction of Low Birth Weight and Neonatal Mortality in Upper Egypt</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prof.%20Ammal%20Mokhtar%20Metwally">Prof. Ammal Mokhtar Metwally</a>, <a href="https://publications.waset.org/abstracts/search?q=Samia%20M.%20Sami"> Samia M. Sami</a>, <a href="https://publications.waset.org/abstracts/search?q=Nihad%20A.%20Ibrahim"> Nihad A. Ibrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20A.%20Shaaban"> Fatma A. Shaaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Iman%20I.%20Salama"> Iman I. Salama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Objectives: Reducing neonatal mortality by 2030 is still a challenging goal in developing countries. low birth weight (LBW) is a significant contributor to this, especially where weighing newborns is not possible routinely. The present study aimed to determine a simple, easy, reliable anthropometric measure(s) that can predict LBW) and neonatal mortality. Methods: A prospective cohort study of 570 babies born in districts of El Menia governorate, Egypt (where most deliveries occurred at home) was examined at birth. Newborn weight, length, head, chest, mid-arm, and thigh circumferences were measured. Follow up of the examined neonates took place during their first four weeks of life to report any mortalities. The most predictable anthropometric measures were determined using the statistical package of SPSS, and multiple Logistic regression analysis was performed.: Results: Head and chest circumferences with cut-off points < 33 cm and ≤ 31.5 cm, respectively, were the significant predictors for LBW. They carried the best combination of having the highest sensitivity (89.8 % & 86.4 %) and least false negative predictive value (1.4 % & 1.7 %). Chest circumference with a cut-off point ≤ 31.5 cm was the significant predictor for neonatal mortality with 83.3 % sensitivity and 0.43 % false negative predictive value. Conclusion: Using chest circumference with a cut-off point ≤ 31.5 cm is recommended as a single simple anthropometric measurement for the prediction of both LBW and neonatal mortality. The predicted measure could act as a substitute for weighting newborns in communities where scales to weigh them are not routinely available. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=low%20birth%20weight" title="low birth weight">low birth weight</a>, <a href="https://publications.waset.org/abstracts/search?q=neonatal%20mortality" title=" neonatal mortality"> neonatal mortality</a>, <a href="https://publications.waset.org/abstracts/search?q=anthropometric%20measures" title=" anthropometric measures"> anthropometric measures</a>, <a href="https://publications.waset.org/abstracts/search?q=practical%20screening" title=" practical screening"> practical screening</a> </p> <a href="https://publications.waset.org/abstracts/162775/development-of-a-practical-screening-measure-for-the-prediction-of-low-birth-weight-and-neonatal-mortality-in-upper-egypt" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162775.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">99</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">129</span> An Analysis of Methodological Approaches of Ahmed Cevdet and Fatma Aliye towards the Ottoman Historiography in a Comparative Context</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aysen%20Muderrisoglu%20Esiner">Aysen Muderrisoglu Esiner</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As an intellectual, scholar, bureaucrat, and statesman, Ahmed Cevdet Pasha (1822-1895) was the prominent figure of “Tanzimat” (reorganization) reforms of the Ottoman State while his daughter Fatma Aliye (1862-1936) was a novelist, columnist, essayist, and women’s rights activist. His father had numerous books on law, grammar, linguistics, logic, and astronomy, moreover, Aliye accepted as the first female novelist in the Turkish literature and the Islamic world. Even if she was better known as a novelist, she also published some works on philosophy, Islam, poetry. In addition, Aliye who was one of the pioneers of the Ottoman women’s movement, also wrote historical works. Her historical works which titled as Tarih-i Osmaninin Bir Devre-i Mühimmesi Kosova Zaferi-Ankara Hezimeti (An Important Era of the Ottoman History: Kosova Victory-Ankara Defeat), and Ahmed Cevdet Paşa ve Zamanı (Ahmed Cevdet Pasha and His Time) have been generally ignored in the literature. However, Aliye’s works in history field are worth being studied in terms of her methodological approach to the Ottoman historiography. On the other hand, written by Ahmed Cevdet Pasha, such as Tarih-i Cevdet (History of Cevdet), Tezâkir (Memoir), Mâruzat (Reports, the events that took place between 1839-1876, 1890), Kısas-ı Enbiya ve Tevârîh-i Hulefa (Retaliation of the Prophets and the History of Calips), Kırım ve Kafkas Tarihçesi (Crimean and Caucasian History) are the most important works in terms of historiography in the 19th century. In contrast to the traditional methodology, Cevdet Pasha brought a new understanding to the Ottoman historiography by making a synthesis between the traditional and modern methods. In this research, the historical works of these two prominent figures of the Ottoman State will be analyzed in terms of their approaches to the Ottoman historiography while evaluating the following questions: to what extent that their use of local and foreign historical sources and their handling of the historical events differ, or if it is possible to talk about a methodological similarities in terms of historiography. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Cevdet%20Pasha" title="Ahmed Cevdet Pasha">Ahmed Cevdet Pasha</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Aliye" title=" Fatma Aliye"> Fatma Aliye</a>, <a href="https://publications.waset.org/abstracts/search?q=historiography" title=" historiography"> historiography</a>, <a href="https://publications.waset.org/abstracts/search?q=methodology" title=" methodology"> methodology</a> </p> <a href="https://publications.waset.org/abstracts/129590/an-analysis-of-methodological-approaches-of-ahmed-cevdet-and-fatma-aliye-towards-the-ottoman-historiography-in-a-comparative-context" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129590.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">128</span> Evaluation of Traffic Noise Around Different Facilities Located in Silent Zones</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khaled%20Shaaban">Khaled Shaaban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Schools and hospitals are supposed to be located in silent zones. In these areas, it is expected to maintain low noise levels in order to promote a peaceful environment for studying or recovering. However, many of these facilities are located in urban areas and are subject to high levels of noise. In this study, an evaluation of traffic noise around schools and hospitals was conducted during different periods of the day. The results indicated that the noise is positively correlated with the traffic volume around these facilities. Locations with higher traffic volumes tend to have higher noise levels. The results also showed that the noise levels exceed the recommended values by the World Health Organization. Several solutions were suggested as potential courses of action to decrease the excessive level of noise around these facilities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=traffic%20noise" title="traffic noise">traffic noise</a>, <a href="https://publications.waset.org/abstracts/search?q=road%20traffic" title=" road traffic"> road traffic</a>, <a href="https://publications.waset.org/abstracts/search?q=noise%20levels" title=" noise levels"> noise levels</a>, <a href="https://publications.waset.org/abstracts/search?q=traffic%20volume" title=" traffic volume"> traffic volume</a> </p> <a href="https://publications.waset.org/abstracts/163737/evaluation-of-traffic-noise-around-different-facilities-located-in-silent-zones" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163737.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">100</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">127</span> Distracted Driving among Young Drivers in Qatar</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Khaled%20Shaaban">Khaled Shaaban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Distracted driving, which includes anything that distracts a driver from the main task of driving, is one of the main causes of traffic accidents in modern societies. The objective of this research was to understand the type of activities that young drivers perform while driving in Qatar and to identify which activities cause the most distraction to the driver based on their experience. The data was collected through administered questionnaires in the city of Doha, Qatar. According to the participants, the majority reported that they use their cell phone all the time or occasionally while driving. Other significantly cited activities while driving included listening to music or radio, talking with passengers, and eating, drinking or smoking. When asked about the activities that distract the driver, using cell phone was listed as the most distracting activity followed by mental activities and adjusting GPS and audio device vehicle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=driver%20distraction" title="driver distraction">driver distraction</a>, <a href="https://publications.waset.org/abstracts/search?q=young%20drivers" title=" young drivers"> young drivers</a>, <a href="https://publications.waset.org/abstracts/search?q=cell%20phone%20use" title=" cell phone use"> cell phone use</a>, <a href="https://publications.waset.org/abstracts/search?q=Qatar" title=" Qatar"> Qatar</a> </p> <a href="https://publications.waset.org/abstracts/16281/distracted-driving-among-young-drivers-in-qatar" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16281.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">493</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">126</span> The Operating Behaviour of Unbalanced Unpaced Merging Assembly Lines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Shaaban">S. Shaaban</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20McNamara"> T. McNamara</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Hudson"> S. Hudson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper reports on the performance of deliberately unbalanced, reliable, non-automated and assembly lines that merge, whose workstations differ in terms of their mean operation times. Simulations are carried out on 5- and 8-station lines with 1, 2 and 4 buffer capacity units, % degrees of line imbalance of 2, 5 and 12, and 24 different patterns of means imbalance. Data on two performance measures, namely throughput and average buffer level were gathered, statistically analysed and compared to a merging balanced line counterpart. It was found that the best configurations are a balanced line arrangement and a monotone decreasing order for each of the parallel merging lines, with the first generally resulting in a lower throughput and the second leading to a lower average buffer level than those of a balanced line. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=average%20buffer%20level" title="average buffer level">average buffer level</a>, <a href="https://publications.waset.org/abstracts/search?q=merging%20lines" title=" merging lines"> merging lines</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=throughput" title=" throughput"> throughput</a>, <a href="https://publications.waset.org/abstracts/search?q=unbalanced" title=" unbalanced"> unbalanced</a> </p> <a href="https://publications.waset.org/abstracts/42374/the-operating-behaviour-of-unbalanced-unpaced-merging-assembly-lines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42374.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">321</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">125</span> Unbalanced Mean-Time and Buffer Effects in Lines Suffering Breakdown</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sabry%20Shaaban">Sabry Shaaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Tom%20McNamara"> Tom McNamara</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Hudson"> Sarah Hudson</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article studies the performance of unpaced serial production lines that are subject to breakdown and are imbalanced in terms of both of their processing time means (MTs) and buffer storage capacities (BCs). Simulation results show that the best pattern in terms of throughput is a balanced line with respect to average buffer level; the best configuration is a monotone decreasing MT order, together with an ascending BC arrangement. Statistical analysis shows that BC, patterns of MT and BC imbalance, line length and degree of imbalance all contribute significantly to performance. Results show that unbalanced lines cope well with unreliability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=unreliable%20unpaced%20serial%20lines" title="unreliable unpaced serial lines">unreliable unpaced serial lines</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=unequal%20mean%20operation%20times" title=" unequal mean operation times"> unequal mean operation times</a>, <a href="https://publications.waset.org/abstracts/search?q=uneven%20buffer%20capacities" title=" uneven buffer capacities"> uneven buffer capacities</a>, <a href="https://publications.waset.org/abstracts/search?q=patterns%20of%20imbalance" title=" patterns of imbalance"> patterns of imbalance</a>, <a href="https://publications.waset.org/abstracts/search?q=throughput" title=" throughput"> throughput</a>, <a href="https://publications.waset.org/abstracts/search?q=average%20buffer%20level" title=" average buffer level"> average buffer level</a> </p> <a href="https://publications.waset.org/abstracts/3491/unbalanced-mean-time-and-buffer-effects-in-lines-suffering-breakdown" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3491.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">473</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">124</span> Microbiota Effect with Cytokine in Hl and NHL Patient Group</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ekin%20Ece%20G%C3%BCrer">Ekin Ece Gürer</a>, <a href="https://publications.waset.org/abstracts/search?q=Tar%C4%B1k%20Onur%20Tiryaki"> Tarık Onur Tiryaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Sevgi%20Kalayo%C4%9Flu%20Be%C5%9F%C4%B1%C5%9F%C4%B1k"> Sevgi Kalayoğlu Beşışık</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Savran%20O%C4%9Fuz"> Fatma Savran Oğuz</a>, <a href="https://publications.waset.org/abstracts/search?q=U%C4%9Fur%20Sezerman"> Uğur Sezerman</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Erdem"> Fatma Erdem</a>, <a href="https://publications.waset.org/abstracts/search?q=G%C3%BCl%C5%9Fen%20G%C3%BCnel"> Gülşen Günel</a>, <a href="https://publications.waset.org/abstracts/search?q=D%C3%BCrdane%20Serap%20Kuruca"> Dürdane Serap Kuruca</a>, <a href="https://publications.waset.org/abstracts/search?q=Zerrin%20Akta%C5%9F"> Zerrin Aktaş</a>, <a href="https://publications.waset.org/abstracts/search?q=Oral%20%C3%96nc%C3%BCl"> Oral Öncül</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aim: Chemotherapytreatment in HodgkinLymphomaandNon-HodgkinLymphoma (NHL) diseasescausesgastrointestinalepithelialdamage, disruptstheintestinalmicrobiotabalanceandcausesdysbiosis. Inourstudy, it wasaimedtoshowtheeffect of thedamagecausedbychemotherapy on themicrobiotaandtheeffect of thechangingmicrobiota flora on thecourse of thedisease. Materials And Methods: Seven adult HL and seven adult HL patients to be treatedwithchemotherapywereincluded in the study. Stoolsamplesweretakentwice, beforechemotherapytreatmentandafterthe 3th course of treatment. SamplesweresequencedusingNextGenerationSequencing (NGS) methodafternucleicacidisolation. OTU tableswerepreparedusing NCBI blastnversion 2.0.12 accordingtothe NCBI general 16S bacterialtaxonomyreferencedated 10.08.2021. Thegenerated OTU tableswerecalculatedwith R Statistical Computer Language version 4.04 (readr, phyloseq, microbiome, vegan, descrand ggplot2 packages) to calculate Alpha diversityandtheirgraphicswerecreated. Statistical analyzeswerealsoperformedusing R Statistical Computer Language version 4.0.4 and studio IDE 1.4 (tidyverse, readr, xlsxand ggplot2 packages). Expression of IL-12 and IL-17 cytokineswasperformedbyrtPCRtwice, beforeandaftertreatment. Results: InHL patients, a significantdecreasewasobserved in themicrobiota flora of Ruminococcaceae_UCG-014 genus (p:0.036) andUndefined Ruminococcaceae_UCG-014 species (p:0.036) comparedtopre-treatment. When the post-treatment of HL patientswerecomparedwithhealthycontrols, a significantdecreasewasfound in themicrobiota of Prevotella_7 genus (p:0.049) andButyricimonas (p:0.006) in the post-treatmentmicrobiota of HL patients. InNHL patients, a significantdecreasewasobserved in themicrobiota flora of Coprococccus_3 genus (p:0.015) andUndefined Ruminoclostridium_5 (p:0.046) speciescomparedtopre-treatment. When post-treatment of NHL patientswerecomparedwithhealthycontrols, a significantabundance in theBacilliclass (p:0.029) and a significantdecrease in theUndefinedAlistipesspecies (p:0.047) wereobserved in the post-treatmentmicrobiota of NHL patients. While a decreasewasobserved in IL-12 cytokineexpressionuntilbeforetreatment, an increase in IL-17 cytokineexpressionwasdetected. Discussion: Intestinal flora monitoringafterchemotherapytreatmentshowsthat it can be a guide in thetreatment of thedisease. It is thoughtthatincreasingthediversity of commensalbacteria can alsopositivelyaffecttheprognosis of thedisease. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hodgkin%20lymphoma" title="hodgkin lymphoma">hodgkin lymphoma</a>, <a href="https://publications.waset.org/abstracts/search?q=non-hodgkin" title=" non-hodgkin"> non-hodgkin</a>, <a href="https://publications.waset.org/abstracts/search?q=microbiota" title=" microbiota"> microbiota</a>, <a href="https://publications.waset.org/abstracts/search?q=cytokines" title=" cytokines"> cytokines</a> </p> <a href="https://publications.waset.org/abstracts/150376/microbiota-effect-with-cytokine-in-hl-and-nhl-patient-group" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/150376.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">108</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">123</span> Alternative Robust Estimators for the Shape Parameters of the Burr XII Distribution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Zehra%20Do%C4%9Fru">Fatma Zehra Doğru</a>, <a href="https://publications.waset.org/abstracts/search?q=Olcay%20Arslan"> Olcay Arslan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we propose alternative robust estimators for the shape parameters of the Burr XII distribution. We provide a small simulation study and a real data example to illustrate the performance of the proposed estimators over the ML and the LS estimators. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=burr%20xii%20distribution" title="burr xii distribution">burr xii distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=robust%20estimator" title=" robust estimator"> robust estimator</a>, <a href="https://publications.waset.org/abstracts/search?q=m-estimator" title=" m-estimator"> m-estimator</a>, <a href="https://publications.waset.org/abstracts/search?q=least%20squares" title=" least squares"> least squares</a> </p> <a href="https://publications.waset.org/abstracts/30038/alternative-robust-estimators-for-the-shape-parameters-of-the-burr-xii-distribution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30038.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">122</span> Application of Artificial Neural Network in Initiating Cleaning Of Photovoltaic Solar Panels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Mokhtar">Mohamed Mokhtar</a>, <a href="https://publications.waset.org/abstracts/search?q=Mostafa%20F.%20Shaaban"> Mostafa F. Shaaban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Among the challenges facing solar photovoltaic (PV) systems in the United Arab Emirates (UAE), dust accumulation on solar panels is considered the most severe problem that faces the growth of solar power plants. The accumulation of dust on the solar panels significantly degrades output from these panels. Hence, solar PV panels have to be cleaned manually or using costly automated cleaning methods. This paper focuses on initiating cleaning actions when required to reduce maintenance costs. The cleaning actions are triggered only when the dust level exceeds a threshold value. The amount of dust accumulated on the PV panels is estimated using an artificial neural network (ANN). Experiments are conducted to collect the required data, which are used in the training of the ANN model. Then, this ANN model will be fed by the output power from solar panels, ambient temperature, and solar irradiance, and thus, it will be able to estimate the amount of dust accumulated on solar panels at these conditions. The model was tested on different case studies to confirm the accuracy of the developed model. <p class="card-text"><strong>Keywords:</strong> <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=dust" title=" dust"> dust</a>, <a href="https://publications.waset.org/abstracts/search?q=PV%20panels" title=" PV panels"> PV panels</a>, <a href="https://publications.waset.org/abstracts/search?q=renewable%20energy" title=" renewable energy"> renewable energy</a> </p> <a href="https://publications.waset.org/abstracts/131092/application-of-artificial-neural-network-in-initiating-cleaning-of-photovoltaic-solar-panels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131092.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">144</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">121</span> Unreliable Production Lines with Simultaneously Unbalanced Operation Time Means, Breakdown, and Repair Rates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sabry%20Shaaban">Sabry Shaaban</a>, <a href="https://publications.waset.org/abstracts/search?q=Tom%20McNamara"> Tom McNamara</a>, <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Hudson"> Sarah Hudson </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the benefits of deliberately unbalancing both operation time means (MTs) and unreliability (failure and repair rates) for non-automated production lines.The lines were simulated with various line lengths, buffer capacities, degrees of imbalance and patterns of MT and unreliability imbalance. Data on two performance measures, namely throughput (TR) and average buffer level (ABL) were gathered, analyzed and compared to a balanced line counterpart. A number of conclusions were made with respect to the ranking of configurations, as well as to the relationships among the independent design parameters and the dependent variables. It was found that the best configurations are a balanced line arrangement and a monotone decreasing MT order, coupled with either a decreasing or a bowl unreliability configuration, with the first generally resulting in a reduced TR and the second leading to a lower ABL than those of a balanced line. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=unreliable%20production%20lines" title="unreliable production lines">unreliable production lines</a>, <a href="https://publications.waset.org/abstracts/search?q=unequal%20mean%20operation%20times" title=" unequal mean operation times"> unequal mean operation times</a>, <a href="https://publications.waset.org/abstracts/search?q=unbalanced%20failure%20and%20repair%20rates" title=" unbalanced failure and repair rates"> unbalanced failure and repair rates</a>, <a href="https://publications.waset.org/abstracts/search?q=throughput" title=" throughput"> throughput</a>, <a href="https://publications.waset.org/abstracts/search?q=average%20buffer%20level" title=" average buffer level"> average buffer level</a> </p> <a href="https://publications.waset.org/abstracts/19452/unreliable-production-lines-with-simultaneously-unbalanced-operation-time-means-breakdown-and-repair-rates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19452.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">486</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">120</span> Exercise program’s Effectiveness on Hepatic Fat Mobilization among Nonalcoholic Fatty Liver Patients</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taher%20Eid%20Shaaban%20Ahmed%20Mousa">Taher Eid Shaaban Ahmed Mousa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-Alcoholic fatty liver disease (NAFLD) is a major cause of multiple liver disorders, which strongly linked to a poor lifestyle. This study aiming to elucidate the exercise program’s effectiveness on hepatic fat mobilization among nonalcoholic fatty liver patients. Subjects: A purposive sample of 150 adult male & female patients. Setting: National institute of liver out patient's clinics of Menoufia University. Tools: three tools I: An interviewing structured questionnaire, II: International Physical Activity Questionnaire, III: compliance assessment sheet. Results: There was statistically significant difference pre and post exercise program regarding total body weight, physical activity level and compliance that prevent new fat development with resolution of existing one. Conclusion: regular exercise is the best implemented approach as an initial step for the prevention, treatment and management of NAFLD. Recommendation: It is highly important to unravel the mechanism and dose by which each exercise specifically resolve various stages of liver diseases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exercise%20program" title="exercise program">exercise program</a>, <a href="https://publications.waset.org/abstracts/search?q=hebatic%20fat%20mobilization" title=" hebatic fat mobilization"> hebatic fat mobilization</a>, <a href="https://publications.waset.org/abstracts/search?q=nonalcoholic%20fatty%20liver%20patients" title=" nonalcoholic fatty liver patients"> nonalcoholic fatty liver patients</a>, <a href="https://publications.waset.org/abstracts/search?q=sport%20science" title=" sport science"> sport science</a> </p> <a href="https://publications.waset.org/abstracts/176487/exercise-programs-effectiveness-on-hepatic-fat-mobilization-among-nonalcoholic-fatty-liver-patients" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/176487.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">85</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">119</span> Waiting Time Reduction in a Government Hospital Emergency Department: A Case Study on AlAdan Hospital, Kuwait</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bashayer%20AlRobayaan">Bashayer AlRobayaan</a>, <a href="https://publications.waset.org/abstracts/search?q=Munira%20Saad"> Munira Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20AlBawab"> Alaa AlBawab</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20AlHamad"> Fatma AlHamad</a>, <a href="https://publications.waset.org/abstracts/search?q=Sara%20AlAwadhi"> Sara AlAwadhi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sherif%20Fahmy"> Sherif Fahmy </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper addresses the problem of long waiting times in government hospitals emergency departments (ED). It aims at finding feasible and simple ways of reducing waiting times that do not require a lot of resources and/or expenses. AlAdan Hospital in Kuwait was chosen to be understudy to further understand and capture the problem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=healthcare" title="healthcare">healthcare</a>, <a href="https://publications.waset.org/abstracts/search?q=hospital" title=" hospital"> hospital</a>, <a href="https://publications.waset.org/abstracts/search?q=Kuwait" title=" Kuwait"> Kuwait</a>, <a href="https://publications.waset.org/abstracts/search?q=waiting%20times" title=" waiting times"> waiting times</a>, <a href="https://publications.waset.org/abstracts/search?q=emergency%20department" title=" emergency department"> emergency department</a> </p> <a href="https://publications.waset.org/abstracts/9389/waiting-time-reduction-in-a-government-hospital-emergency-department-a-case-study-on-aladan-hospital-kuwait" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9389.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">489</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">118</span> Investigation of Heating Behaviour of E-Textile Structures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hande%20Sezgin">Hande Sezgin</a>, <a href="https://publications.waset.org/abstracts/search?q=Senem%20Kursun%20Bahad%C4%B1r"> Senem Kursun Bahadır</a>, <a href="https://publications.waset.org/abstracts/search?q=Yakup%20Erhan%20Boke"> Yakup Erhan Boke</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Kalao%C4%9Flu"> Fatma Kalaoğlu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Electronic textiles (e-textiles) are fabrics that contain electronics and interconnections with them. In this study, two types of base yarns (cotton and acrylic) and three conductive steel yarns with different linear resistance values (14Ω/m, 30Ω/m, 70Ω/m) were used to investigate the effect of base yarn type and linear resistance of conductive yarns on thermal behavior of e-textile structures. Thermal behavior of samples were examined by thermal camera. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=conductive%20yarn" title="conductive yarn">conductive yarn</a>, <a href="https://publications.waset.org/abstracts/search?q=e-textiles" title=" e-textiles"> e-textiles</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20textiles" title=" smart textiles"> smart textiles</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20analysis" title=" thermal analysis"> thermal analysis</a> </p> <a href="https://publications.waset.org/abstracts/29743/investigation-of-heating-behaviour-of-e-textile-structures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29743.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">557</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">117</span> Desalination via Electrodialysis: A Newly Designed Fixed Bed Reactor Powered by Renewable Energy Source </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hend%20Mesbah">Hend Mesbah</a>, <a href="https://publications.waset.org/abstracts/search?q=Yehia%20Youssef"> Yehia Youssef</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20%20Hassan"> Ibrahim Hassan</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaaban%20Nosier"> Shaaban Nosier</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20El-Shazly"> Ahmed El-Shazly</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Helal"> Ahmed Helal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The problem of drinking water shortage is becoming more crucial nowadays as a result of the increased demand due to the population growth and the rise in the standard living. In recent years, desalination using electrodialysis powered by solar energy (PV-ED) is being widely used to help provide treated water and reduce the scarcity in water supply. In the present study, a water desalination laboratory scale ED cell with a fixed bed circulation system was designed, developed, and tested. The effect of three parameters (namely, cell voltage , flowrate, and salt concentration) on the removal percentage of salt ions was studied. The cell voltage was adjusted at 3 , 4 and 6 V. A flow rate of 5, 10, and 20 ml/s and an initial salt concentration of 2000, 5000, and 7000 ppm were investigated. The maximum salt percentage removal obtained was 52.5% at the lowest initial concentration (2000 ppm) and at the highest cell voltage (6 V). There was no significant effect of the flow rate on the removal percentage. A model of PV module has also been developed to calculate the dimensions of a solar cell based on the amount of energy consumed and it was calculated from the Overall ED cell voltage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=desalination" title="desalination">desalination</a>, <a href="https://publications.waset.org/abstracts/search?q=electrodialysis" title=" electrodialysis"> electrodialysis</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20desalination" title=" solar desalination"> solar desalination</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20electrodialysis" title=" photovoltaic electrodialysis"> photovoltaic electrodialysis</a> </p> <a href="https://publications.waset.org/abstracts/123726/desalination-via-electrodialysis-a-newly-designed-fixed-bed-reactor-powered-by-renewable-energy-source" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123726.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">147</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">116</span> A Secure Digital Signature Scheme with Fault Tolerance Based on the Improved RSA System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20El-Kamchouchi">H. El-Kamchouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Gaber"> Heba Gaber</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Ahmed"> Fatma Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Dalia%20H.%20El-Kamchouchi"> Dalia H. El-Kamchouchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fault tolerance and data security are two important issues in modern communication systems. In this paper, we propose a secure and efficient digital signature scheme with fault tolerance based on the improved RSA system. The proposed scheme for the RSA cryptosystem contains three prime numbers and overcome several attacks possible on RSA. By using the Chinese Reminder Theorem (CRT) the proposed scheme has a speed improvement on the RSA decryption side and it provides high security also. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20signature" title="digital signature">digital signature</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20tolerance" title=" fault tolerance"> fault tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=RSA" title=" RSA"> RSA</a>, <a href="https://publications.waset.org/abstracts/search?q=security%20analysis" title=" security analysis"> security analysis</a> </p> <a href="https://publications.waset.org/abstracts/51269/a-secure-digital-signature-scheme-with-fault-tolerance-based-on-the-improved-rsa-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51269.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">476</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">115</span> Factors Influencing University Student's Acceptance of New Technology </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Khadra">Fatma Khadra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The objective of this research is to identify the acceptance of new technology in a sample of 150 Participants from Qatar University. Based on the Technology Acceptance Model (TAM), we used the Davis’s scale (1989) which contains two item scales for Perceived Usefulness and Perceived Ease of Use. The TAM represents an important theoretical contribution toward understanding how users come to accept and use technology. This model suggests that when people are presented with a new technology, a number of variables influence their decision about how and when they will use it. The results showed that participants accept more technology because flexibility, clarity, enhancing the experience, enjoying, facility, and useful. Also, results showed that younger participants accept more technology than others. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=new%20technology" title="new technology">new technology</a>, <a href="https://publications.waset.org/abstracts/search?q=perceived%20usefulness" title=" perceived usefulness"> perceived usefulness</a>, <a href="https://publications.waset.org/abstracts/search?q=perceived%20ease%20of%20use" title=" perceived ease of use"> perceived ease of use</a>, <a href="https://publications.waset.org/abstracts/search?q=technology%20acceptance%20model" title=" technology acceptance model"> technology acceptance model</a> </p> <a href="https://publications.waset.org/abstracts/61593/factors-influencing-university-students-acceptance-of-new-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61593.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">321</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">114</span> An Investigation on Hot-Spot Temperature Calculation Methods of Power Transformers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmet%20Y.%20Arabul">Ahmet Y. Arabul</a>, <a href="https://publications.waset.org/abstracts/search?q=Ibrahim%20Senol"> Ibrahim Senol</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Keskin%20Arabul"> Fatma Keskin Arabul</a>, <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20G.%20Aydeniz"> Mustafa G. Aydeniz</a>, <a href="https://publications.waset.org/abstracts/search?q=Yasemin%20Oner"> Yasemin Oner</a>, <a href="https://publications.waset.org/abstracts/search?q=Gokhan%20Kalkan"> Gokhan Kalkan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the standards of IEC 60076-2 and IEC 60076-7, three different hot-spot temperature estimation methods are suggested. In this study, the algorithms which used in hot-spot temperature calculations are analyzed by comparing the algorithms with the results of an experimental set-up made by a Transformer Monitoring System (TMS) in use. In tested system, TMS uses only top oil temperature and load ratio for hot-spot temperature calculation. And also, it uses some constants from standards which are on agreed statements tables. During the tests, it came out that hot-spot temperature calculation method is just making a simple calculation and not uses significant all other variables that could affect the hot-spot temperature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hot-spot%20temperature" title="Hot-spot temperature">Hot-spot temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=monitoring%20system" title=" monitoring system"> monitoring system</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20transformer" title=" power transformer"> power transformer</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20grid" title=" smart grid"> smart grid</a> </p> <a href="https://publications.waset.org/abstracts/33034/an-investigation-on-hot-spot-temperature-calculation-methods-of-power-transformers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33034.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">573</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">113</span> Prey-Predator Eco-Epidemiological Model with Nonlinear Transmission Disease</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qamar%20J.%20A.%20Khan">Qamar J. A. Khan</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Ahmed%20Al%20Kharousi"> Fatma Ahmed Al Kharousi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A prey-predator eco-epidemiological model is studied where transmission of the disease between infected and uninfected prey is nonlinear. The interaction of the predator with infected and uninfected prey species depend on their numerical superiority. Harvesting of both uninfected and infected prey is considered. Stability analysis is carried out for equilibrium values. Using the parameter µ, the death rate of infected prey as a bifurcation parameter it is shown that Hopf bifurcation could occur. The theoretical results are compared with numerical results for different set of parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bifurcation" title="bifurcation">bifurcation</a>, <a href="https://publications.waset.org/abstracts/search?q=optimal%20harvesting" title=" optimal harvesting"> optimal harvesting</a>, <a href="https://publications.waset.org/abstracts/search?q=predator" title=" predator"> predator</a>, <a href="https://publications.waset.org/abstracts/search?q=prey" title=" prey"> prey</a>, <a href="https://publications.waset.org/abstracts/search?q=stability" title=" stability"> stability</a> </p> <a href="https://publications.waset.org/abstracts/55570/prey-predator-eco-epidemiological-model-with-nonlinear-transmission-disease" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/55570.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">302</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">112</span> Phytochimical Screening and Antimicrobial Activity of Ethanolic Extract of Solenostemma Argel (Asclepiadaceae)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Acheuk">Fatma Acheuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Akila%20Hamichi"> Akila Hamichi</a>, <a href="https://publications.waset.org/abstracts/search?q=Siham%20Semmar"> Siham Semmar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The crude ethanolic extract from Solenostemma argel was obtained by maceration of leaves and stems of the plant. Phytochimical study revealed the richness of the species on flavonoids, alkaloids, tannins and glycosides. Antimicrobial activity of the growth of clinical isolates of Eschirichia coli, Pseudomonas aeriginosa, Staphylococus aureus and Bacillus Subtilis was carried out using agar disc diffusion. The results of the study revealed that the test compound has antimicrobial activity against gram-positive bacteria which are resistant to commonly antimicrobial agents used. However, no effect was observed on other species tested. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Solenostemma%20argel" title="Solenostemma argel">Solenostemma argel</a>, <a href="https://publications.waset.org/abstracts/search?q=crude%20extract" title=" crude extract"> crude extract</a>, <a href="https://publications.waset.org/abstracts/search?q=phytochemical%20screening" title=" phytochemical screening"> phytochemical screening</a>, <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title=" antimicrobial activity "> antimicrobial activity </a> </p> <a href="https://publications.waset.org/abstracts/37158/phytochimical-screening-and-antimicrobial-activity-of-ethanolic-extract-of-solenostemma-argel-asclepiadaceae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/37158.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">382</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">111</span> Examining Audiology Students: Clinical Reasoning Skills When Using Virtual Audiology Cases Aided With no Collaboration, Live Collaboration, and Virtual Collaboration</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ramy%20Shaaban">Ramy Shaaban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this study was to examine the difference in clinical reasoning skills of students when using virtual audiology cases with and without collaborative assistance from major learning approaches important to clinical reasoning skills and computer-based learning models: Situated Learning Theory, Social Development Theory, Scaffolding, and Collaborative Learning. A quasi-experimental design was conducted at two United States universities to examine whether there is a significant difference in clinical reasoning skills between three treatment groups using IUP Audiosim software. Two computer-based audiology case simulations were developed, and participants were randomly placed into the three groups: no collaboration, virtual collaboration, and live collaboration. The clinical reasoning data were analyzed using One-Way ANOVA and Tukey posthoc analyses. The results show that there was a significant difference in clinical reasoning skills between the three treatment groups. The score obtained by the no collaboration group was significantly less than the scores obtained by the virtual and live collaboration groups. Collaboration, whether virtual or in person, has a positive effect on students’ clinical reasoning. These results with audiology students indicate that combining collaboration models with scaffolding and embedding situated learning and social development theories into the design of future virtual patients has the potential to improve students’ clinical reasoning skills. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=clinical%20reasoning" title="clinical reasoning">clinical reasoning</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20patients" title=" virtual patients"> virtual patients</a>, <a href="https://publications.waset.org/abstracts/search?q=collaborative%20learning" title=" collaborative learning"> collaborative learning</a>, <a href="https://publications.waset.org/abstracts/search?q=scaffolding" title=" scaffolding"> scaffolding</a> </p> <a href="https://publications.waset.org/abstracts/140721/examining-audiology-students-clinical-reasoning-skills-when-using-virtual-audiology-cases-aided-with-no-collaboration-live-collaboration-and-virtual-collaboration" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140721.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">214</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">110</span> Bioinsecticidal Activity and Phytochemical Study of the Crude Extract from the Plant Artemisia judaica</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Acheuk">Fatma Acheuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Idir%20Bitam"> Idir Bitam</a>, <a href="https://publications.waset.org/abstracts/search?q=Leila%20Bendifallah"> Leila Bendifallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Malika%20Ramdani"> Malika Ramdani</a>, <a href="https://publications.waset.org/abstracts/search?q=Fethia%20Barika"> Fethia Barika</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phytochemical study of the plant Artemisia judaica showed the presence of various groups of natural products: saponins, tannins, coumarins, flavonoids, carbohydrates, and reducer compounds. However, alkaloids are present as traces. The crude ethanol extract of the test plant presented significant insecticidal activity on mosquito larvae in stage I, II and III. The LD50 highlighted the excellent insecticidal effect of the tested extract. Similarly, the LT50 are achieved early with high doses. The results obtained are encouraging and suggest the possibility of using the secondary metabolites of this plant such as bio-insecticide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Atamisia%20judaica" title="Atamisia judaica">Atamisia judaica</a>, <a href="https://publications.waset.org/abstracts/search?q=crud%20extract" title=" crud extract"> crud extract</a>, <a href="https://publications.waset.org/abstracts/search?q=mosquito" title=" mosquito"> mosquito</a>, <a href="https://publications.waset.org/abstracts/search?q=insecticidal%20activity" title=" insecticidal activity"> insecticidal activity</a> </p> <a href="https://publications.waset.org/abstracts/24116/bioinsecticidal-activity-and-phytochemical-study-of-the-crude-extract-from-the-plant-artemisia-judaica" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24116.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">519</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">109</span> Phytochemical Study and Bioinsecticidal Effect of the Crude Extract from the Plant Artemisia Judaica</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Acheuk">Fatma Acheuk</a>, <a href="https://publications.waset.org/abstracts/search?q=Idir%20Bitam"> Idir Bitam</a>, <a href="https://publications.waset.org/abstracts/search?q=Leila%20Bendifallah"> Leila Bendifallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Malika%20Ramdani"> Malika Ramdani</a>, <a href="https://publications.waset.org/abstracts/search?q=Fethia%20Barika"> Fethia Barika</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phytochemical study of the plant Artemisia judaica showed the presence of various groups of natural products: saponins, tannins, coumarins, flavonoids, carbohydrates, and reducer compounds. However alkaloids are present as traces. The crude ethanol extract of the test plant presented significant insecticidal activity on mosquito larvae in stage I, II, and III. The LD50 highlighted the excellent insecticidal effect of the tested extract. Similarly, the LT50 are achieved early with high doses. The results obtained are encouraging and suggest the possibility of using the secondary metabolites of this plant such as bio-insecticide. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Atamisia%20judaica" title="Atamisia judaica">Atamisia judaica</a>, <a href="https://publications.waset.org/abstracts/search?q=crud%20extract" title=" crud extract"> crud extract</a>, <a href="https://publications.waset.org/abstracts/search?q=mosquito" title=" mosquito"> mosquito</a>, <a href="https://publications.waset.org/abstracts/search?q=insecticidal%20activity" title=" insecticidal activity"> insecticidal activity</a> </p> <a href="https://publications.waset.org/abstracts/21689/phytochemical-study-and-bioinsecticidal-effect-of-the-crude-extract-from-the-plant-artemisia-judaica" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21689.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">590</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">108</span> Characterization of Graphene Oxide Coated Gold Electrodes for Bioimpedance Measurements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20G%C3%BClden%20%C5%9Ei%CC%87m%C5%9Fek">Fatma Gülden Şi̇mşek</a>, <a href="https://publications.waset.org/abstracts/search?q=Osman%20Meli%CC%87h%20Can"> Osman Meli̇h Can</a>, <a href="https://publications.waset.org/abstracts/search?q=Mehmet%20Yumak"> Mehmet Yumak</a>, <a href="https://publications.waset.org/abstracts/search?q=Bora%20Gari%CC%87pcan"> Bora Gari̇pcan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yekta%20%C3%9Clgen"> Yekta Ülgen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, the impedance spectroscopy is used as a detection tool in order to characterize surface coating with graphene oxide. Gold electrodes are produced by standard lithography procedures and then coated with graphene oxide using self-assembly method. The impedance of redox solution through bare gold electrodes and graphene oxide coated gold electrodes is measured in the low and high frequency range. The graphene oxide coating reduces the impedance value of the gold electrode and this reduction is distinguishable in the low-frequency range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bioimpedance" title="bioimpedance">bioimpedance</a>, <a href="https://publications.waset.org/abstracts/search?q=electrode%20characterization" title=" electrode characterization"> electrode characterization</a>, <a href="https://publications.waset.org/abstracts/search?q=graphene%20oxide" title=" graphene oxide"> graphene oxide</a>, <a href="https://publications.waset.org/abstracts/search?q=gold%20electrodes" title=" gold electrodes"> gold electrodes</a>, <a href="https://publications.waset.org/abstracts/search?q=impedance%20spectroscopy" title=" impedance spectroscopy"> impedance spectroscopy</a> </p> <a href="https://publications.waset.org/abstracts/47355/characterization-of-graphene-oxide-coated-gold-electrodes-for-bioimpedance-measurements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47355.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">541</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">107</span> Chemical Modification of PVC and Its Surface Analysis by Means of XPS and Contact Angle Measurements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ali%20Akrmi">Ali Akrmi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Beji"> Mohamed Beji</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Baklouti"> Ahmed Baklouti</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Djouani"> Fatma Djouani</a>, <a href="https://publications.waset.org/abstracts/search?q=Philippe%20Lang"> Philippe Lang</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20M.%20Chehimi"> Mohamed M. Chehimi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Poly(vinyl chloride) (PVC) is a highly versatile polymer with excellent balance of properties and numerous applications such as water pipes, packaging and polymer materials of importance in the biomedical sector. However, depending on the applications, it is necessary to modify PVC by mixing with a plasticizer; surface modification using plasma, surface grafting or flame treatment; or bulk chemical modification which affects the entire PVC chains at an extent that can be tuned by the polymer chemist. The targeted applications are improvement of chemical resistance, avoiding or limitation of migration of toxic plasticizers, improvement of antibacterial properties, or control of blood compatibility. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=poly%28vinyl%20chloride%29" title="poly(vinyl chloride)">poly(vinyl chloride)</a>, <a href="https://publications.waset.org/abstracts/search?q=nucleophilic%20substitution" title=" nucleophilic substitution"> nucleophilic substitution</a>, <a href="https://publications.waset.org/abstracts/search?q=sulfonylcarbamates" title=" sulfonylcarbamates"> sulfonylcarbamates</a>, <a href="https://publications.waset.org/abstracts/search?q=XPS" title=" XPS"> XPS</a> </p> <a href="https://publications.waset.org/abstracts/13663/chemical-modification-of-pvc-and-its-surface-analysis-by-means-of-xps-and-contact-angle-measurements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13663.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">705</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">106</span> Study of a Developed Model Describing a Vacuum Membrane Distillation Unit Coupled to Solar Energy </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Khaled">Fatma Khaled</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaoula%20Hidouri"> Khaoula Hidouri</a>, <a href="https://publications.waset.org/abstracts/search?q=Bechir%20Chaouachi"> Bechir Chaouachi </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Desalination using solar energy coupled with membrane techniques such as vacuum membrane distillation (VMD) is considered as an interesting alternative for the production of pure water. During this work, a developed model of a polytetrafluoroethylene (PTFE) hollow fiber membrane module of a VMD unit of seawater was carried out. This simulation leads to establishing a comparison between the effects of two different equations of the vaporization latent heat on the membrane surface temperature and on the unit productivity. Besides, in order to study the effect of putting membrane modules in series on the outlet fluid temperature and on the productivity of the process, a simulation was executed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=vacuum%20membrane%20distillation" title="vacuum membrane distillation">vacuum membrane distillation</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane%20module" title=" membrane module"> membrane module</a>, <a href="https://publications.waset.org/abstracts/search?q=membrane%20temperature" title=" membrane temperature"> membrane temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=productivity" title=" productivity"> productivity</a> </p> <a href="https://publications.waset.org/abstracts/107225/study-of-a-developed-model-describing-a-vacuum-membrane-distillation-unit-coupled-to-solar-energy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107225.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">192</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">105</span> Implementing Fault Tolerance with Proxy Signature on the Improvement of RSA System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20El-Kamchouchi">H. El-Kamchouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Gaber"> Heba Gaber</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Ahmed"> Fatma Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Dalia%20H.%20El-Kamchouchi"> Dalia H. El-Kamchouchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fault tolerance and data security are two important issues in modern communication systems. During the transmission of data between the sender and receiver, errors may occur frequently. Therefore, the sender must re-transmit the data to the receiver in order to correct these errors, which makes the system very feeble. To improve the scalability of the scheme, we present a proxy signature scheme with fault tolerance over an efficient and secure authenticated key agreement protocol based on the improved RSA system. Authenticated key agreement protocols have an important role in building a secure communications network between the two parties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fault%20tolerance" title="fault tolerance">fault tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=improved%20RSA" title=" improved RSA"> improved RSA</a>, <a href="https://publications.waset.org/abstracts/search?q=key%20agreement" title=" key agreement"> key agreement</a>, <a href="https://publications.waset.org/abstracts/search?q=proxy%20signature" title=" proxy signature"> proxy signature</a> </p> <a href="https://publications.waset.org/abstracts/51456/implementing-fault-tolerance-with-proxy-signature-on-the-improvement-of-rsa-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51456.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">425</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">104</span> An Efficient Proxy Signature Scheme Over a Secure Communications Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20El-Kamchouchi">H. El-Kamchouchi</a>, <a href="https://publications.waset.org/abstracts/search?q=Heba%20Gaber"> Heba Gaber</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Ahmed"> Fatma Ahmed</a>, <a href="https://publications.waset.org/abstracts/search?q=Dalia%20H.%20El-Kamchouchi"> Dalia H. El-Kamchouchi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Proxy signature scheme permits an original signer to delegate his/her signing capability to a proxy signer, and then the proxy signer generates a signing message on behalf of the original signer. The two parties must be able to authenticate one another and agree on a secret encryption key, in order to communicate securely over an unreliable public network. Authenticated key agreement protocols have an important role in building secure communications network between the two parties. In this paper, we present a secure proxy signature scheme over an efficient and secure authenticated key agreement protocol based on the discrete logarithm problem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=proxy%20signature" title="proxy signature">proxy signature</a>, <a href="https://publications.waset.org/abstracts/search?q=warrant%20partial%20delegation" title=" warrant partial delegation"> warrant partial delegation</a>, <a href="https://publications.waset.org/abstracts/search?q=key%20agreement" title=" key agreement"> key agreement</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20logarithm" title=" discrete logarithm"> discrete logarithm</a> </p> <a href="https://publications.waset.org/abstracts/51599/an-efficient-proxy-signature-scheme-over-a-secure-communications-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51599.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">345</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">103</span> Perception Towards Using E-learning with Stem Students Whose Programs Require Them to Attend Practical Sections in Laboratories during Covid-19</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Youssef%20A.%20Yakoub">Youssef A. Yakoub</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramy%20M.%20Shaaban"> Ramy M. Shaaban</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Covid-19 has changed and affected the whole world dramatically in a new way that the entire world, even scientists, have not imagined before. The educational institutions around the world have been fighting since Covid-19 hit the world last December to keep the educational process unchanged for all students. E-learning was a must for almost all US universities during the pandemic. It was specifically more challenging to use eLearning instead of regular classes among students who take practical education. The aim of this study is to examine the perception of STEM students towards using eLearning instead of traditional methods during their practical study. Focus groups of STEM students studying at a western Pennsylavian, mid-size university were interviewed. Semi-structured interviews were designed to get an insight on students’ perception towards the alternative educational methods they used in the past seven months. Using convenient sampling, four students were chosen from different STEM fields: science of physics, technology, electrical engineering, and mathematics. The interview was primarily about the extent to which these students were satisfied, and their educational needs were met through distance education during the pandemic. The interviewed students were generally able to do a satisfactory performance during their virtual classes, but they were not satisfied enough with the learning methods. The main challenges they faced included the inability to have real practical experience, insufficient materials posted by the faculty, and some technical problems associated with their study. However, they reported they were satisfied with the simulation programs they had. They reported these simulations provided them with a good alternative to their traditional practical education. In conclusion, this study highlighted the challenges students face during the pandemic. It also highlighted the various learning tools students see as good alternatives to their traditional education. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eLearning" title="eLearning">eLearning</a>, <a href="https://publications.waset.org/abstracts/search?q=STEM%20education" title=" STEM education"> STEM education</a>, <a href="https://publications.waset.org/abstracts/search?q=COVID-19%20crisis" title=" COVID-19 crisis"> COVID-19 crisis</a>, <a href="https://publications.waset.org/abstracts/search?q=online%20practical%20training" title=" online practical training"> online practical training</a> </p> <a href="https://publications.waset.org/abstracts/131033/perception-towards-using-e-learning-with-stem-students-whose-programs-require-them-to-attend-practical-sections-in-laboratories-during-covid-19" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131033.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">134</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">102</span> Optimisation of Photovoltaic Array with DC-DC Converter Groups</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatma%20Soltani">Fatma Soltani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In power electronics the DC-DC converters or choppers are now employed in large areas, particularly in the field of electricity generation by wind and solar energy conversion. Photovoltaic generators (GPV) can deliver maximum power for a point on the characteristic P = f (Vpv), called maximum power point (MPP), or climatic variations, entraiment fluctuation PPM. To remedy this problem is interposed between the generator and receiver a DC-DC converter. The converter is usually used a simple MOSFET chopper. However, the MOSFET can be applied in the field of low power when you need a high switching frequency but becomes highly dissipative when should block large voltages For PV generators medium and high power, the use of IGBT chopper is by far the most recommended. To reduce stress on semiconductor components using several choppers series connected in parallel is known as interleaved chopper. These choppers lead to rotas. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=converter%20DC-DC%20entrelaced%01%02%01" title="converter DC-DC entrelaced">converter DC-DC entrelaced</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20generators" title=" photovoltaic generators"> photovoltaic generators</a>, <a href="https://publications.waset.org/abstracts/search?q=IGBT" title=" IGBT"> IGBT</a>, <a href="https://publications.waset.org/abstracts/search?q=optimisation" title=" optimisation"> optimisation</a> </p> <a href="https://publications.waset.org/abstracts/21869/optimisation-of-photovoltaic-array-with-dc-dc-converter-groups" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21869.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">539</span> 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