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Taha</title> <meta name="description" content="Search results for: Haitham Taha"> <meta name="keywords" content="Haitham Taha"> <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 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Haitham Taha"> <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> 112</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Haitham Taha</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">112</span> Poor Cognitive Flexibility as Suggested Basis for Learning Difficulties among Children with Moderate-INTO-Severe Asthma: Evidence from WCSTPerformance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Taha">Haitham Taha </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The cognitive flexibility of 27 asthmatic children with learning difficulties was tested by using the Wisconsin card sorting test (WCST) and compared to the performances of 30 non-asthmatic children who have persistence learning difficulties also. The results revealed that the asthmatic group had poor performance through all the WCST psychometric parameters and especially the preservative errors one. The results were discussed in light of the postulation that poor executive functions and specifically poor cognitive flexibility are in the basis of the learning difficulties of asthmatic children with learning difficulties. Neurophysiologic framework was suggested for explaining the etiology of poor executive functions and cognitive flexibility among children with moderate into severe asthma. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=asthma" title="asthma">asthma</a>, <a href="https://publications.waset.org/abstracts/search?q=learning%20disabilities" title=" learning disabilities"> learning disabilities</a>, <a href="https://publications.waset.org/abstracts/search?q=executive%20functions" title=" executive functions"> executive functions</a>, <a href="https://publications.waset.org/abstracts/search?q=cognitive%20flexibility" title=" cognitive flexibility"> cognitive flexibility</a>, <a href="https://publications.waset.org/abstracts/search?q=WCST" title=" WCST "> WCST </a> </p> <a href="https://publications.waset.org/abstracts/13405/poor-cognitive-flexibility-as-suggested-basis-for-learning-difficulties-among-children-with-moderate-into-severe-asthma-evidence-from-wcstperformance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13405.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">502</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> Using Fuzzy Logic Decision Support System to Predict the Lifted Weight for Students at Weightlifting Class</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Abdulghani%20Taha">Ahmed Abdulghani Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Abdulghani%20Taha"> Mohammad Abdulghani Taha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study aims at being acquainted with the using the body fat percentage (%BF) with body Mass Index (BMI) as input parameters in fuzzy logic decision support system to predict properly the lifted weight for students at weightlifting class lift according to his abilities instead of traditional manner. The sample included 53 male students (age = 21.38 ± 0.71 yrs, height (Hgt) = 173.17 ± 5.28 cm, body weight (BW) = 70.34 ± 7.87.6 kg, Body mass index (BMI) 23.42 ± 2.06 kg.m-2, fat mass (FM) = 9.96 ± 3.15 kg and fat percentage (% BF) = 13.98 ± 3.51 %.) experienced the weightlifting class as a credit and has variance at BW, Hgt and BMI and FM. BMI and % BF were taken as input parameters in FUZZY logic whereas the output parameter was the lifted weight (LW). There were statistical differences between LW values before and after using fuzzy logic (Diff 3.55± 2.21, P > 0.001). The percentages of the LW categories proposed by fuzzy logic were 3.77% of students to lift 1.0 fold of their bodies; 50.94% of students to lift 0.95 fold of their bodies; 33.96% of students to lift 0.9 fold of their bodies; 3.77% of students to lift 0.85 fold of their bodies and 7.55% of students to lift 0.8 fold of their bodies. The study concluded that the characteristic changes in body composition experienced by students when undergoing weightlifting could be utilized side by side with the Fuzzy logic decision support system to determine the proper workloads consistent with the abilities of students. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic" title="fuzzy logic">fuzzy logic</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20mass%20index" title=" body mass index"> body mass index</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20fat%20percentage" title=" body fat percentage"> body fat percentage</a>, <a href="https://publications.waset.org/abstracts/search?q=weightlifting" title=" weightlifting"> weightlifting</a> </p> <a href="https://publications.waset.org/abstracts/11353/using-fuzzy-logic-decision-support-system-to-predict-the-lifted-weight-for-students-at-weightlifting-class" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11353.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">429</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">110</span> Gas Flotation Unit in Kuwait Oil Company Operations </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Homoud%20Bourisli">Homoud Bourisli</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Safar"> Haitham Safar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Oil is one of main resources of energy in the world. As conventional oil is drying out, oil recovery is crucial to maintain the same level of oil production. Since water injection is one of the commonly used methods to increase and maintain pressure in oil wells, oil-water separation processes of the water associated with oil production for water injection oil recovery is very essential. Therefore, Gas Flotation Units are used for oil-water separation to be able to re-inject the treated water back into the wells to increase pressure. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kuwait%20oil%20company" title="Kuwait oil company">Kuwait oil company</a>, <a href="https://publications.waset.org/abstracts/search?q=dissolved%20gas%20flotation%20unit" title=" dissolved gas flotation unit"> dissolved gas flotation unit</a>, <a href="https://publications.waset.org/abstracts/search?q=induced%20gas%20flotation%20unit" title=" induced gas flotation unit"> induced gas flotation unit</a>, <a href="https://publications.waset.org/abstracts/search?q=oil-water%20separation" title=" oil-water separation"> oil-water separation</a> </p> <a href="https://publications.waset.org/abstracts/29539/gas-flotation-unit-in-kuwait-oil-company-operations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29539.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">574</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> Harmony Search-Based K-Coverage Enhancement in Wireless Sensor Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shaimaa%20M.%20Mohamed">Shaimaa M. Mohamed</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitham%20S.%20Hamza"> Haitham S. Hamza</a>, <a href="https://publications.waset.org/abstracts/search?q=Imane%20A.%20Saroit"> Imane A. Saroit</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Many wireless sensor network applications require K-coverage of the monitored area. In this paper, we propose a scalable harmony search based algorithm in terms of execution time, K-Coverage Enhancement Algorithm (KCEA), it attempts to enhance initial coverage, and achieve the required K-coverage degree for a specific application efficiently. Simulation results show that the proposed algorithm achieves coverage improvement of 5.34% compared to K-Coverage Rate Deployment (K-CRD), which achieves 1.31% when deploying one additional sensor. Moreover, the proposed algorithm is more time efficient. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wireless%20Sensor%20Networks%20%28WSN%29" title="Wireless Sensor Networks (WSN)">Wireless Sensor Networks (WSN)</a>, <a href="https://publications.waset.org/abstracts/search?q=harmony%20search%20algorithms" title=" harmony search algorithms"> harmony search algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=K-Coverage" title=" K-Coverage"> K-Coverage</a>, <a href="https://publications.waset.org/abstracts/search?q=Mobile%20WSN" title=" Mobile WSN"> Mobile WSN</a> </p> <a href="https://publications.waset.org/abstracts/19924/harmony-search-based-k-coverage-enhancement-in-wireless-sensor-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19924.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">526</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> Determination of the Axial-Vector from an Extended Linear Sigma Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Sayed%20Taha%20Ali">Tarek Sayed Taha Ali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The dependence of the axial-vector coupling constant gA on the quark masses has been investigated in the frame work of the extended linear sigma model. The field equations have been solved in the mean-field approximation. Our study shows a better fitting to the experimental data compared with the existing models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=extended%20linear%20sigma%20model" title="extended linear sigma model">extended linear sigma model</a>, <a href="https://publications.waset.org/abstracts/search?q=nucleon%20properties" title=" nucleon properties"> nucleon properties</a>, <a href="https://publications.waset.org/abstracts/search?q=axial%20coupling%20constant" title=" axial coupling constant"> axial coupling constant</a>, <a href="https://publications.waset.org/abstracts/search?q=physic" title=" physic"> physic</a> </p> <a href="https://publications.waset.org/abstracts/2310/determination-of-the-axial-vector-from-an-extended-linear-sigma-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2310.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">445</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> Phytochemical Investigation and Diuretic Activity of the Palestinian Crataegus aronia in Mice Using an Aqueous Extract</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Belal%20Rahhal">Belal Rahhal</a>, <a href="https://publications.waset.org/abstracts/search?q=Isra%20Taha"> Isra Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Insaf%20Najajreh"> Insaf Najajreh</a>, <a href="https://publications.waset.org/abstracts/search?q=Waleed%20Basha"> Waleed Basha</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamzeh%20Alzabadeh"> Hamzeh Alzabadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahed%20Zyoud"> Ahed Zyoud</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Phytochemical Investigation and Diuretic Activity of the Palestinian Crataegus aronia in Mice using an Aqueous Extract Division of Physiology, Pharmacology and Toxicology Faculty of Medicine and Health Sciences An- Najah National University Nablus- Palestine Belal Rahhal, Isra Taha, Insaf Najajreh, Waleed Basha, Hamzeh Alzabadeh and Ahed Zyoud Purpose: Throughout history, various natural materials were used as remedies for treatment of various diseases, and recently a vastly growing and renewed interest in herbal medicine is witnessed globally. In Palestinian folk medicine, Crataegus aronia is used as a diuretic and for treatment of hypertension. This study aimed to assess the preliminary phytochemical properties and the diuretic effect of the aqueous extracts of this plant in mice after its intraperitonial administration. Methods: It is an experimental trial applied on mice (n=8, Male, CD-1, weight range: [25-30 gram]), which are divided into two groups (4 in each). The first group administered with the plant extract (500 mg/kg) , and the second with normal saline as negative control group. Then urine output and electrolyte contents were quantified up to 6 hours for the three groups and then compared to the control one. Results: Preliminary phytochemical screening reveals the presence of tannins, alkaloids and flavoniods as major phytoconstituents in aqueous extract. Significant diuresis was noted in those received the aqueous extract of Crataegus aronia (p < 0.05) compared to controls. Moreover, aqueous extract had an acidic pH and a mild increase in the electrolyte excretion (Na, K). Conclusions: Our results revealed that Crataegus aronia aqueous extract has a potential diuretic effect. Further studies are needed to evaluate this diuretic effect in the relief of diseases characterized by volume overload. Keywords: C. aronia, furosemide, diuresis, mice, medicinal plants. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medicinal%20plants" title=" medicinal plants"> medicinal plants</a>, <a href="https://publications.waset.org/abstracts/search?q=diuretic%20activity" title=" diuretic activity"> diuretic activity</a>, <a href="https://publications.waset.org/abstracts/search?q=mice" title=" mice"> mice</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20aronia" title=" C. aronia"> C. aronia</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=furosemide" title=" furosemide"> furosemide</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=Phytochemical%20Investigation" title=" Phytochemical Investigation "> Phytochemical Investigation </a> </p> <a href="https://publications.waset.org/abstracts/123995/phytochemical-investigation-and-diuretic-activity-of-the-palestinian-crataegus-aronia-in-mice-using-an-aqueous-extract" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/123995.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">198</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> Private Law, Public Justice: Another Look at Imprisonment for Debt under the Jordanian Law</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20A.%20Haloush">Haitham A. Haloush</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Debtors' imprisonment in Jordan is a problematic issue since it impinges upon required financial guarantees that are presumably offered by debtors on the one hand, and infringes flagrantly the International Covenant on Civil and Political Rights on the other hand. Jordan lacks regulatory provisions in this respect and debtors' imprisonment is indirectly exercised in Jordan without giving a special legal attention to this concern. From this perspective, this research reviews the available regulations, standard laws and codes of conduct that might guide the implementation of the International Covenant on Civil and Political Rights in the Jordanian context. Furthermore, this article will examine the suitability of the Jordanian legal system in providing sufficient protection for debtors. The author argues that there are serious obstacles in this aspect. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=the%20Jordanian%20civil%20code" title="the Jordanian civil code">the Jordanian civil code</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20Jordanian%20execution%20law" title=" the Jordanian execution law"> the Jordanian execution law</a>, <a href="https://publications.waset.org/abstracts/search?q=imprisonment%20for%20debt" title=" imprisonment for debt"> imprisonment for debt</a>, <a href="https://publications.waset.org/abstracts/search?q=good%20faith" title=" good faith"> good faith</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20Jordanian%20constitution" title=" the Jordanian constitution"> the Jordanian constitution</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20international%20covenant%20on%20civil%20and%20political%20rights" title=" the international covenant on civil and political rights"> the international covenant on civil and political rights</a> </p> <a href="https://publications.waset.org/abstracts/131826/private-law-public-justice-another-look-at-imprisonment-for-debt-under-the-jordanian-law" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131826.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">122</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> An Ontology for Semantic Enrichment of RFID Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20S.%20Hamza">Haitham S. Hamza</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Maher"> Mohamed Maher</a>, <a href="https://publications.waset.org/abstracts/search?q=Shourok%20Alaa"> Shourok Alaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Aya%20Khattab"> Aya Khattab</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadeal%20Ismail"> Hadeal Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Kamilia%20Hosny"> Kamilia Hosny</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Radio Frequency Identification (RFID) has become a key technology in the margining concept of Internet of Things (IoT). Naturally, business applications would require the deployment of various RFID systems that are developed by different vendors and use various data formats. This heterogeneity poses a real challenge in developing large-scale IoT systems with RFID as integration is becoming very complex and challenging. Semantic integration is a key approach to deal with this challenge. To do so, ontology for RFID systems need to be developed in order to annotated semantically RFID systems, and hence, facilitate their integration. Accordingly, in this paper, we propose ontology for RFID systems. The proposed ontology can be used to semantically enrich RFID systems, and hence, improve their usage and reasoning. The usage of the proposed ontology is explained through a simple scenario in the health care domain. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=RFID" title="RFID">RFID</a>, <a href="https://publications.waset.org/abstracts/search?q=semantic%20technology" title=" semantic technology"> semantic technology</a>, <a href="https://publications.waset.org/abstracts/search?q=ontology" title=" ontology"> ontology</a>, <a href="https://publications.waset.org/abstracts/search?q=sparql%20query%20language" title=" sparql query language"> sparql query language</a>, <a href="https://publications.waset.org/abstracts/search?q=heterogeneity" title=" heterogeneity"> heterogeneity</a> </p> <a href="https://publications.waset.org/abstracts/39376/an-ontology-for-semantic-enrichment-of-rfid-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39376.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">471</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> The Effect of Inlet Baffle Position in Improving the Efficiency of Oil and Water Gravity Separator Tanks </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20A.%20Hussein">Haitham A. Hussein</a>, <a href="https://publications.waset.org/abstracts/search?q=Rozi%20Abdullah"> Rozi Abdullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Issa%20Saket"> Issa Saket</a>, <a href="https://publications.waset.org/abstracts/search?q=Md.%20Azlin"> Md. Azlin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The gravitational effect has been extensively applied to separate oil from water in water and wastewater treatment systems. The maximum oil globules removal efficiency is improved by obtaining the best flow uniformity in separator tanks. This study used 2D computational fluid dynamics (CFD) to investigate the effect of different inlet baffle positions inside the separator tank. Laboratory experiment has been conducted, and the measured velocity fields which were by Nortek Acoustic Doppler Velocimeter (ADV) are used to verify the CFD model. Computational investigation results indicated that the construction of an inlet baffle in a suitable location provides the minimum recirculation zone volume, creates the best flow uniformity, and dissipates kinetic energy in the oil and water separator tank. Useful formulas were predicted to design the oil and water separator tanks geometry based on an experimental model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=oil%2Fwater%20separator%20tanks" title="oil/water separator tanks">oil/water separator tanks</a>, <a href="https://publications.waset.org/abstracts/search?q=inlet%20baffles" title=" inlet baffles"> inlet baffles</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=VOF" title=" VOF"> VOF</a> </p> <a href="https://publications.waset.org/abstracts/52725/the-effect-of-inlet-baffle-position-in-improving-the-efficiency-of-oil-and-water-gravity-separator-tanks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/52725.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">367</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> Using Mixed Methods in Studying Classroom Social Network Dynamics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nashrawan%20Naser%20Taha">Nashrawan Naser Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Andrew%20M.%20Cox"> Andrew M. Cox</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a multi-cultural learning context, where ties are weak and dynamic, combining qualitative with quantitative research methods may be more effective. Such a combination may also allow us to answer different types of question, such as about people’s perception of the network. In this study the use of observation, interviews and photos were explored as ways of enhancing data from social network questionnaires. Integrating all of these methods was found to enhance the quality of data collected and its accuracy, also providing a richer story of the network dynamics and the factors that shaped these changes over time. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mixed%20methods" title="mixed methods">mixed methods</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20network%20analysis" title=" social network analysis"> social network analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-cultural%20learning" title=" multi-cultural learning"> multi-cultural learning</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20network%20dynamics" title=" social network dynamics"> social network dynamics</a> </p> <a href="https://publications.waset.org/abstracts/15500/using-mixed-methods-in-studying-classroom-social-network-dynamics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15500.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">510</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> Dynamic Bandwidth Allocation in Fiber-Wireless (FiWi) Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eman%20I.%20Raslan">Eman I. Raslan</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitham%20S.%20Hamza"> Haitham S. Hamza</a>, <a href="https://publications.waset.org/abstracts/search?q=Reda%20A.%20El-Khoribi"> Reda A. El-Khoribi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fiber-Wireless (FiWi) networks are a promising candidate for future broadband access networks. These networks combine the optical network as the back end where different passive optical network (PON) technologies are realized and the wireless network as the front end where different wireless technologies are adopted, e.g. LTE, WiMAX, Wi-Fi, and Wireless Mesh Networks (WMNs). The convergence of both optical and wireless technologies requires designing architectures with robust efficient and effective bandwidth allocation schemes. Different bandwidth allocation algorithms have been proposed in FiWi networks aiming to enhance the different segments of FiWi networks including wireless and optical subnetworks. In this survey, we focus on the differentiating between the different bandwidth allocation algorithms according to their enhancement segment of FiWi networks. We classify these techniques into wireless, optical and Hybrid bandwidth allocation techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fiber-wireless%20%28FiWi%29" title="fiber-wireless (FiWi)">fiber-wireless (FiWi)</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20bandwidth%20allocation%20%28DBA%29" title=" dynamic bandwidth allocation (DBA)"> dynamic bandwidth allocation (DBA)</a>, <a href="https://publications.waset.org/abstracts/search?q=passive%20optical%20networks%20%28PON%29" title=" passive optical networks (PON)"> passive optical networks (PON)</a>, <a href="https://publications.waset.org/abstracts/search?q=media%20access%20control%20%28MAC%29" title=" media access control (MAC)"> media access control (MAC)</a> </p> <a href="https://publications.waset.org/abstracts/43649/dynamic-bandwidth-allocation-in-fiber-wireless-fiwi-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43649.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">531</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">101</span> Planning a Supply Chain with Risk and Environmental Objectives</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ghanima%20Al-Sharrah">Ghanima Al-Sharrah</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitham%20M.%20Lababidi"> Haitham M. Lababidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Yusuf%20I.%20Ali"> Yusuf I. Ali</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main objective of the current work is to introduce sustainability factors in optimizing the supply chain model for process industries. The supply chain models are normally based on purely economic considerations related to costs and profits. To account for sustainability, two additional factors have been introduced; environment and risk. A supply chain for an entire petroleum organization has been considered for implementing and testing the proposed optimization models. The environmental and risk factors were introduced as indicators reflecting the anticipated impact of the optimal production scenarios on sustainability. The aggregation method used in extending the single objective function to multi-objective function is proven to be quite effective in balancing the contribution of each objective term. The results indicate that introducing sustainability factor would slightly reduce the economic benefit while improving the environmental and risk reduction performances of the process industries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=environmental%20indicators" title="environmental indicators">environmental indicators</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=risk" title=" risk"> risk</a>, <a href="https://publications.waset.org/abstracts/search?q=supply%20chain" title=" supply chain"> supply chain</a> </p> <a href="https://publications.waset.org/abstracts/50756/planning-a-supply-chain-with-risk-and-environmental-objectives" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50756.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">351</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">100</span> Experimental and Computational Investigations of Baffle Position Effects on ‎the Performance of Oil and Water Separator Tanks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20A.%20Hussein">Haitham A. Hussein</a>, <a href="https://publications.waset.org/abstracts/search?q=Rozi%20Abdullah%E2%80%8F%E2%80%8E"> Rozi Abdullah‏‎</a>, <a href="https://publications.waset.org/abstracts/search?q=Md%20Azlin%20Md%20Said%20%E2%80%8E"> Md Azlin Md Said ‎</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gravity separator tanks are used to separate oil from water in treatment units. Achieving the best flow ‎uniformity in a separator tank will improve the maximum removal efficiency of oil globules from water. ‎In this study, the effect on hydraulic performance of different baffle structure positions inside a tank ‎was investigated. Experimental data and 2D computation fluid dynamics were used for analysis. In the ‎numerical model, two-phase flow (drift flux model) was used to validate one-phase flow. For ‎laboratory measurements, the velocity fields were measured using an acoustic Doppler velocimeter. The ‎measurements were compared with the result of the computational model. The results of the ‎experimental and computational simulations indicate that the best location of a baffle structure is ‎achieved when the standard deviation of the velocity profile and the volume of the circulation zone ‎inside the tank are minimized.‎ <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gravity%20separator%20tanks" title="gravity separator tanks">gravity separator tanks</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=baffle%20position" title=" baffle position"> baffle position</a>, <a href="https://publications.waset.org/abstracts/search?q=two%20phase%20flow" title=" two phase flow"> two phase flow</a>, <a href="https://publications.waset.org/abstracts/search?q=ADV" title=" ADV"> ADV</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20droplet" title=" oil droplet"> oil droplet</a> </p> <a href="https://publications.waset.org/abstracts/13318/experimental-and-computational-investigations-of-baffle-position-effects-on-the-performance-of-oil-and-water-separator-tanks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13318.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">328</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">99</span> Blockchain in Saudi E-Government: A Systematic Literature Review</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Assiri">Haitham Assiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Priyadarsi%20Nanda"> Priyadarsi Nanda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The world is gradually entering the fourth industrial revolution. E-Government services are scaling government operations across the globe. However, as promising as an e-Government system would be, it is also susceptible to malicious attacks if not properly secured. This study found out that, in Saudi Arabia, the e-Government website, Yesser is vulnerable to external attacks. Obviously, this can lead to a breach of data integrity and privacy. In this paper, a Systematic Literature Review was conducted to explore possible ways the Kingdom of Saudi Arabia can take necessary measures to strengthen its e-Government system using Blockchain. Blockchain is one of the emerging technologies shaping the world through its applications in finance, elections, healthcare, etc. It secures systems and brings more transparency. A total of 28 papers were selected for this SLR, and 19 of the papers significantly showed that blockchain could enhance the security and privacy of Saudi’s e-government system. Other papers also concluded that blockchain is effective, albeit with the integration of other technologies like IoT, AI and big data. These papers have been analysed to sieve out the findings and set the stage for future research into the subject. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blockchain" title="blockchain">blockchain</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20integrity" title=" data integrity"> data integrity</a>, <a href="https://publications.waset.org/abstracts/search?q=e-government" title=" e-government"> e-government</a>, <a href="https://publications.waset.org/abstracts/search?q=security%20threats" title=" security threats"> security threats</a> </p> <a href="https://publications.waset.org/abstracts/140502/blockchain-in-saudi-e-government-a-systematic-literature-review" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140502.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">250</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">98</span> 3 Dimensions Finite Element Analysis of Tunnel-Pile Interaction Scenarios Using Abaqus Software</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20J.%20M.%20Odeh">Haitham J. M. Odeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper introduced an analysis of the effect of tunneling near pile foundations. Accomplished by three-dimensional finite element modeling. The numerical simulation is conducted using Abaqus finite element software. By examining different Tunnel-pile scenarios. The paper presents the tunnel induced pile responses, Such as pile settlement, pile internal forces, and the comments made on changing the vertical and transversal location of the tunnel related to the piles, the study contains two pile-supported structure cases, single and a group of piles. A comprehensive comparison between real case study results and numerical simulation is presented. The results of the analysis reveal the critical and safe location of tunnel construction and the positive effect of a group of piles existing instead of single piles. Also, demonstrates the changes in pile responses by changing the tunnel location. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pile%20responses" title="pile responses">pile responses</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20pile" title=" single pile"> single pile</a>, <a href="https://publications.waset.org/abstracts/search?q=group%20of%20piles" title=" group of piles"> group of piles</a>, <a href="https://publications.waset.org/abstracts/search?q=pile-tunnel%20interaction" title=" pile-tunnel interaction"> pile-tunnel interaction</a> </p> <a href="https://publications.waset.org/abstracts/151131/3-dimensions-finite-element-analysis-of-tunnel-pile-interaction-scenarios-using-abaqus-software" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151131.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">142</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">97</span> Critical Success Factors of Information Technology Projects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Athar%20Imtiaz">Athar Imtiaz</a>, <a href="https://publications.waset.org/abstracts/search?q=Abduljalil%20S.%20Al-Mudhary"> Abduljalil S. Al-Mudhary</a>, <a href="https://publications.waset.org/abstracts/search?q=Taha%20Mirhashemi"> Taha Mirhashemi</a>, <a href="https://publications.waset.org/abstracts/search?q=Roslina%20Ibrahim"> Roslina Ibrahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Information Technology (IT) is being used by almost all organizations throughout the world. However, its success at supporting and improving business is debatable. There is always the risk of IT project failure and studies have proven that a large number of IT projects indeed do fail. There are many components that further the success of IT projects; these have been studied in previous studies. Studies have found the most necessary components for success in software development projects, executive information systems etc. In this study, previous literature that has looked into these success promoting factors have been critically reviewed and analyzed. Fifteen critical Success Factors (CSF) of IT projects were enlisted and examined. These factors can be applied to all IT projects and is not specific to a particular type of IT/IS project. A hypothesis was also generated after the evaluation of the factors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=critical%20success%20factors" title="critical success factors">critical success factors</a>, <a href="https://publications.waset.org/abstracts/search?q=CSF" title=" CSF"> CSF</a>, <a href="https://publications.waset.org/abstracts/search?q=IT%20projects" title=" IT projects"> IT projects</a>, <a href="https://publications.waset.org/abstracts/search?q=IS%20projects" title=" IS projects"> IS projects</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20development%20projects" title=" software development projects"> software development projects</a> </p> <a href="https://publications.waset.org/abstracts/2420/critical-success-factors-of-information-technology-projects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2420.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">400</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">96</span> Combline Cavity Bandpass Filter Design and Implementation Using EM Simulation Tool</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taha%20Ahmed%20%C3%96zbey">Taha Ahmed Özbey</a>, <a href="https://publications.waset.org/abstracts/search?q=Sedat%20Nazl%C4%B1bilek"> Sedat Nazlıbilek</a>, <a href="https://publications.waset.org/abstracts/search?q=Alparslan%20%C3%87a%C4%9Fr%C4%B1%20Yap%C4%B1c%C4%B1"> Alparslan Çağrı Yapıcı</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Combline cavity filters have gained significant attention in recent years due to their exceptional narrowband characteristics, high unloaded Q, remarkable out-of-band rejection, and versatile post-manufacturing tuning capabilities. These filters play a vital role in various wireless communication systems, radar applications, and other advanced technologies where stringent frequency selectivity and superior performance are required. This paper represents combined cavity filter design and implementation by coupling matrix synthesis. Limited filter length, 50 dB out-of-band rejection, and agile design were aimed. To do so, CAD tools and intuitive methods were used. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cavity" title="cavity">cavity</a>, <a href="https://publications.waset.org/abstracts/search?q=band%20pass%20filter" title=" band pass filter"> band pass filter</a>, <a href="https://publications.waset.org/abstracts/search?q=cavity%20combline%20filter" title=" cavity combline filter"> cavity combline filter</a>, <a href="https://publications.waset.org/abstracts/search?q=coupling%20matrix%20synthesis" title=" coupling matrix synthesis"> coupling matrix synthesis</a> </p> <a href="https://publications.waset.org/abstracts/171516/combline-cavity-bandpass-filter-design-and-implementation-using-em-simulation-tool" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/171516.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">72</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">95</span> Isolation of Antimicrobial Compounds from Marine Sponge Neopetrosia exigua</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Qaralleh">Haitham Qaralleh</a>, <a href="https://publications.waset.org/abstracts/search?q=Syed%20Z.%20Idid"> Syed Z. Idid</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahbudin%20Saad"> Shahbudin Saad</a>, <a href="https://publications.waset.org/abstracts/search?q=Deny%20Susanti"> Deny Susanti</a>, <a href="https://publications.waset.org/abstracts/search?q=Osama%20Althunibat"> Osama Althunibat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study was carried out to isolate the active antimicrobial compounds from Neopetrosia exigua using bio-guided assay isolation against Staphylococcus aureus. N. exigua was extracted using methanol and subjected to liquid-liquid extraction using solvents with different polarity (n-hexane, carbon tetrachloride, dichloromethane, n-butanol and water). Purification of the active components of n-butanol and dichloromethane fractions was done using Sephadex LH-20 and reverse phase chromatography. Based on the biological guided fractionation results, dichloromethane and n-butanol fractions showed the highest antimicrobial activity. Purification of the active components of n-butanol and dichloromethane fractions yielded three compounds. The structure of the isolated compounds were elucidated and found to be 5-hydroxy-1H-indole-3-carboxylic acid methyl ester, cyclo-1`-demethylcystalgerone and avarol derivative. Avarol was showed potent bactericidal effect against S. aureus. N. exigua appears to be rich source of natural antimicrobial agents. Further studies are needed to investigate the mode of action of these compounds. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial" title="antimicrobial">antimicrobial</a>, <a href="https://publications.waset.org/abstracts/search?q=avarol" title=" avarol"> avarol</a>, <a href="https://publications.waset.org/abstracts/search?q=Neopetrosia%20exigua" title=" Neopetrosia exigua"> Neopetrosia exigua</a>, <a href="https://publications.waset.org/abstracts/search?q=Staphylococcus%20aureus" title=" Staphylococcus aureus"> Staphylococcus aureus</a> </p> <a href="https://publications.waset.org/abstracts/10115/isolation-of-antimicrobial-compounds-from-marine-sponge-neopetrosia-exigua" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10115.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">433</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">94</span> The Unsteady Non-Equilibrium Distribution Function and Exact Equilibrium Time for a Dilute Gas Affected by Thermal Radiation Field</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taha%20Zakaraia%20Abdel%20Wahid">Taha Zakaraia Abdel Wahid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The behavior of the unsteady non-equilibrium distribution function for a dilute gas under the effect of non-linear thermal radiation field is presented. For the best of our knowledge this is done for the first time at all. The distinction and comparisons between the unsteady perturbed and the unsteady equilibrium velocity distribution functions are illustrated. The equilibrium time for the dilute gas is determined for the first time. The non-equilibrium thermodynamic properties of the system (gas+the heated plate) are investigated. The results are applied to the Argon gas, for various values of radiation field intensity. 3D-Graphics illustrating the calculated variables are drawn to predict their behavior. The results are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dilute%20gas" title="dilute gas">dilute gas</a>, <a href="https://publications.waset.org/abstracts/search?q=radiation%20field" title=" radiation field"> radiation field</a>, <a href="https://publications.waset.org/abstracts/search?q=exact%20solutions" title=" exact solutions"> exact solutions</a>, <a href="https://publications.waset.org/abstracts/search?q=travelling%20wave%20method" title=" travelling wave method"> travelling wave method</a>, <a href="https://publications.waset.org/abstracts/search?q=unsteady%20BGK%20model" title=" unsteady BGK model"> unsteady BGK model</a>, <a href="https://publications.waset.org/abstracts/search?q=irreversible%20thermodynamics" title=" irreversible thermodynamics"> irreversible thermodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=unsteady%20non-equilibrium%20distribution%20functions" title=" unsteady non-equilibrium distribution functions"> unsteady non-equilibrium distribution functions</a> </p> <a href="https://publications.waset.org/abstracts/10132/the-unsteady-non-equilibrium-distribution-function-and-exact-equilibrium-time-for-a-dilute-gas-affected-by-thermal-radiation-field" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10132.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">495</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">93</span> Urban Land Cover from GF-2 Satellite Images Using Object Based and Neural Network Classifications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lamyaa%20Gamal%20El-Deen%20Taha">Lamyaa Gamal El-Deen Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Ashraf%20Sharawi"> Ashraf Sharawi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> China launched satellite GF-2 in 2014. This study deals with comparing nearest neighbor object-based classification and neural network classification methods for classification of the fused GF-2 image. Firstly, rectification of GF-2 image was performed. Secondly, a comparison between nearest neighbor object-based classification and neural network classification for classification of fused GF-2 was performed. Thirdly, the overall accuracy of classification and kappa index were calculated. Results indicate that nearest neighbor object-based classification is better than neural network classification for urban mapping. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GF-2%20images" title="GF-2 images">GF-2 images</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20extraction-rectification" title=" feature extraction-rectification"> feature extraction-rectification</a>, <a href="https://publications.waset.org/abstracts/search?q=nearest%20neighbour%20object%20based%20classification" title=" nearest neighbour object based classification"> nearest neighbour object based classification</a>, <a href="https://publications.waset.org/abstracts/search?q=segmentation%20algorithms" title=" segmentation algorithms"> segmentation algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20network%20classification" title=" neural network classification"> neural network classification</a>, <a href="https://publications.waset.org/abstracts/search?q=multilayer%20perceptron" title=" multilayer perceptron"> multilayer perceptron</a> </p> <a href="https://publications.waset.org/abstracts/84243/urban-land-cover-from-gf-2-satellite-images-using-object-based-and-neural-network-classifications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84243.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">389</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">92</span> Antioxidant Activity and Chemical Constituents of Leaf Essential Oils of Pseuduvaria Monticola and Pseuduvaria Macrophylla (Annonaceae)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hairin%20Taha">Hairin Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20Narrima"> P. Narrima</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Hapipah"> M. A. Hapipah</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Mustafa"> A. M. Mustafa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The chemical constituents and antioxidant activity of the leaf essential oils of Pseuduvaria monticola and Pseuduvaria macrophylla from the Annonaceae family were investigated. GC-TOFMS analyses identified 46 compounds from Pseuduvaria monticola and 11 compounds from Pseuduvaria macrophylla. The major constituents in the leaf essential oil of Pseuduvaria monticola were a-cadinol (13.0%), calamenene-cis (6.9%), alfa copaene (4%), and epizonarene (3.8%), while in the leaf essential oil of Pseuduvaria macrophylla were caryophyllene oxide (29.7%) and elimicin (28%). The antioxidant activity of both the essential oils were determined using the 2,2'-diphenyl-1-picrylhydrazyl assay (DPPH). The present study suggests that both essential oils demonstrated good antioxidant activity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pseuduvaria%20monticola" title="Pseuduvaria monticola">Pseuduvaria monticola</a>, <a href="https://publications.waset.org/abstracts/search?q=Pseuduvaria%20macrophylla" title=" Pseuduvaria macrophylla"> Pseuduvaria macrophylla</a>, <a href="https://publications.waset.org/abstracts/search?q=leaf%20essential%20oils" title=" leaf essential oils"> leaf essential oils</a>, <a href="https://publications.waset.org/abstracts/search?q=GC-MSTOF" title=" GC-MSTOF"> GC-MSTOF</a>, <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title=" antioxidant activity"> antioxidant activity</a> </p> <a href="https://publications.waset.org/abstracts/20076/antioxidant-activity-and-chemical-constituents-of-leaf-essential-oils-of-pseuduvaria-monticola-and-pseuduvaria-macrophylla-annonaceae" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20076.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">381</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">91</span> Improving the Frequency Response of a Circular Dual-Mode Resonator with a Reconfigurable Bandwidth</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Haitham%20Albahnassi">Muhammad Haitham Albahnassi</a>, <a href="https://publications.waset.org/abstracts/search?q=Adnan%20Malki"> Adnan Malki</a>, <a href="https://publications.waset.org/abstracts/search?q=Shokri%20Almekdad"> Shokri Almekdad</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a method for reconfiguring bandwidth in a circular dual-mode resonator is presented. The method concerns the optimized geometry of a structure that may be used to host the tuning elements, which are typically RF (Radio Frequency) switches. The tuning elements themselves, and their performance during tuning, are not the focus of this paper. The designed resonator is able to reconfigure its fractional bandwidth by adjusting the inter-coupling level between the degenerate modes, while at the same time improving its response by adjusting the external-coupling level and keeping the center frequency fixed. The inter-coupling level has been adjusted by changing the dimensions of the perturbation element, while the external-coupling level has been adjusted by changing one of the feeder dimensions. The design was arrived at via optimization. Agreeing simulation and measurement results of the designed and implemented filters showed good improvements in return loss values and the stability of the center frequency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dual-mode%20resonators" title="dual-mode resonators">dual-mode resonators</a>, <a href="https://publications.waset.org/abstracts/search?q=perturbation%20theory" title=" perturbation theory"> perturbation theory</a>, <a href="https://publications.waset.org/abstracts/search?q=reconfigurable%20filters" title=" reconfigurable filters"> reconfigurable filters</a>, <a href="https://publications.waset.org/abstracts/search?q=software%20defined%20radio" title=" software defined radio"> software defined radio</a>, <a href="https://publications.waset.org/abstracts/search?q=cognitine%20radio" title=" cognitine radio "> cognitine radio </a> </p> <a href="https://publications.waset.org/abstracts/118849/improving-the-frequency-response-of-a-circular-dual-mode-resonator-with-a-reconfigurable-bandwidth" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118849.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">167</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">90</span> Employees’ Satisfaction and Engagement in UAE: Antecedents and Outcomes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sareh%20Rajabi">Sareh Rajabi</a>, <a href="https://publications.waset.org/abstracts/search?q=Taha%20Anjamrooz"> Taha Anjamrooz</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Hassan%20%20Almarzooqi"> Ahmed Hassan Almarzooqi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Employee satisfaction, engagement, and performance are crucial for successful organizations. The performance of the employees now depends on their satisfaction level and whether they are satisfied with the management. Due to this fact, the organizations are now measuring the satisfaction level of their employees to increase profitability, productivity, and turnover. The aim of this research is to inspect the antecedents which direct in the direction of significant employee engagement and good job fit by finding the relationship between employee satisfaction and engagement. Based on an inclusive literature review on the employees’ satisfaction, engagement and performance, this research will conduct a study and survey in the UAE organizations in order to develop a framework for evaluating the impact of factors like employee satisfaction and engagement on the operation as an outcome by using statistical analysis. This study will allow in understanding the advantages of containing satisfied employees and how they perform in their peak motivation to make the company more profitable and competitive. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=employees%E2%80%99%20satisfaction" title="employees’ satisfaction">employees’ satisfaction</a>, <a href="https://publications.waset.org/abstracts/search?q=employees%E2%80%99%20engagement" title=" employees’ engagement"> employees’ engagement</a>, <a href="https://publications.waset.org/abstracts/search?q=antecedents" title=" antecedents"> antecedents</a>, <a href="https://publications.waset.org/abstracts/search?q=outcomes" title=" outcomes"> outcomes</a> </p> <a href="https://publications.waset.org/abstracts/128752/employees-satisfaction-and-engagement-in-uae-antecedents-and-outcomes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128752.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">151</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">89</span> Particle Size Effect on Shear Strength of Granular Materials in Direct Shear Test</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20Alias">R. Alias</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Kasa"> A. Kasa</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20R.%20Taha"> M. R. Taha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of particle size on shear strength of granular materials are investigated using direct shear tests. Small direct shear test (60 mm by 60 mm by 24 mm deep) were conducted for particles passing the sieves with opening size of 2.36 mm. Meanwhile, particles passing the standard 20 mm sieves were tested using large direct shear test (300 mm by 300 mm by 200 mm deep). The large direct shear tests and the small direct shear tests carried out using the same shearing rate of 0.09 mm/min and similar normal stresses of 100, 200, and 300 kPa. The results show that the peak and residual shear strength decreases as particle size increases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=particle%20size" title="particle size">particle size</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20strength" title=" shear strength"> shear strength</a>, <a href="https://publications.waset.org/abstracts/search?q=granular%20material" title=" granular material"> granular material</a>, <a href="https://publications.waset.org/abstracts/search?q=direct%20shear%20test" title=" direct shear test"> direct shear test</a> </p> <a href="https://publications.waset.org/abstracts/16566/particle-size-effect-on-shear-strength-of-granular-materials-in-direct-shear-test" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/16566.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">88</span> Synthesis, Characterization and Anti-Microbial Study of Urethanized Poly Vinyl Alcohol Metal Complexes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maha%20A.%20Younus">Maha A. Younus</a>, <a href="https://publications.waset.org/abstracts/search?q=Dhefaf%20H.%20Badri"> Dhefaf H. Badri</a>, <a href="https://publications.waset.org/abstracts/search?q=Maha%20A.%20Al%20Abayaji"> Maha A. Al Abayaji</a>, <a href="https://publications.waset.org/abstracts/search?q=Taha%20M.%20Salih"> Taha M. Salih</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Polymer metal complexes of poly vinyl alcohol and Cu (II), Ni (II), Mn (II) and Co (III) were prepared from the reaction of PVA with three different percentages of urea. The compound was characterized by fourier transform infrared spectrometry (FTIR) analysis and differential scanning calorimetric (DSC) Analysis. It has been established that the polymer and its metal complexes showed good activities against nine pathogenic bacteria (Escherichia coli, Klebsiellapneumonae, Staphylococcusaureus, Staphylococcus Albus, Salmonella Typhoid, Pseudomonas Aeruginosa, Shigella Dysentery, Proteus Morgani, Brucella Militensis). The polymer metal complexes show activity higher than that of the free polymer. The increasing activities were in the order (polymer < pol-Mn< pol-Co < pol-Ni ˂ pol-Cu). The ability of these compounds to show antimicrobial properties suggests that they can be further evaluated for medicinal and/or environmental applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antimicrobial%20activity" title="antimicrobial activity">antimicrobial activity</a>, <a href="https://publications.waset.org/abstracts/search?q=PVA" title=" PVA"> PVA</a>, <a href="https://publications.waset.org/abstracts/search?q=polymer-metal%20complex" title=" polymer-metal complex"> polymer-metal complex</a>, <a href="https://publications.waset.org/abstracts/search?q=urea" title=" urea"> urea</a> </p> <a href="https://publications.waset.org/abstracts/70839/synthesis-characterization-and-anti-microbial-study-of-urethanized-poly-vinyl-alcohol-metal-complexes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70839.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">338</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">87</span> The Behavior of Unsteady Non-Equilibrium Distribution Function and Exact Equilibrium Time for a Dilute Gas Mixture Affected by Thermal Radiation Field</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taha%20Zakaraia%20Abdel%20Wahid">Taha Zakaraia Abdel Wahid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study, a development of the papers is introduced. The behavior of the unsteady non-equilibrium distribution functions for a rarefied gas mixture under the effect of non-linear thermal radiation field is presented. For the best of our knowledge this is done for the first time at all. The distinction and comparisons between the unsteady perturbed and the unsteady equilibrium velocity distribution functions are illustrated. The equilibrium time for the rarefied gas mixture is determined for the first time. The non-equilibrium thermodynamic properties of the system is investigated. The results are applied to the Argon-Neon binary gas mixture, for various values of both of molar fraction parameters and radiation field intensity. 3D-Graphics illustrating the calculated variables are drawn to predict their behavior and the results are discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiation%20field" title="radiation field">radiation field</a>, <a href="https://publications.waset.org/abstracts/search?q=binary%20gas%20mixture" title=" binary gas mixture"> binary gas mixture</a>, <a href="https://publications.waset.org/abstracts/search?q=exact%20solutions" title=" exact solutions"> exact solutions</a>, <a href="https://publications.waset.org/abstracts/search?q=travelling%20wave%20method" title=" travelling wave method"> travelling wave method</a>, <a href="https://publications.waset.org/abstracts/search?q=unsteady%20BGK%20model" title=" unsteady BGK model"> unsteady BGK model</a>, <a href="https://publications.waset.org/abstracts/search?q=irreversible%20thermodynamics" title=" irreversible thermodynamics"> irreversible thermodynamics</a> </p> <a href="https://publications.waset.org/abstracts/10477/the-behavior-of-unsteady-non-equilibrium-distribution-function-and-exact-equilibrium-time-for-a-dilute-gas-mixture-affected-by-thermal-radiation-field" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10477.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">452</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">86</span> Day/Night Detector for Vehicle Tracking in Traffic Monitoring Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Taha">M. Taha</a>, <a href="https://publications.waset.org/abstracts/search?q=Hala%20H.%20Zayed"> Hala H. Zayed</a>, <a href="https://publications.waset.org/abstracts/search?q=T.%20Nazmy"> T. Nazmy</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Khalifa"> M. Khalifa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently, traffic monitoring has attracted the attention of computer vision researchers. Many algorithms have been developed to detect and track moving vehicles. In fact, vehicle tracking in daytime and in nighttime cannot be approached with the same techniques, due to the extreme different illumination conditions. Consequently, traffic-monitoring systems are in need of having a component to differentiate between daytime and nighttime scenes. In this paper, a HSV-based day/night detector is proposed for traffic monitoring scenes. The detector employs the hue-histogram and the value-histogram on the top half of the image frame. Experimental results show that the extraction of the brightness features along with the color features within the top region of the image is effective for classifying traffic scenes. In addition, the detector achieves high precision and recall rates along with it is feasible for real time applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=day%2Fnight%20detector" title="day/night detector">day/night detector</a>, <a href="https://publications.waset.org/abstracts/search?q=daytime%2Fnighttime%20classification" title=" daytime/nighttime classification"> daytime/nighttime classification</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20classification" title=" image classification"> image classification</a>, <a href="https://publications.waset.org/abstracts/search?q=vehicle%20tracking" title=" vehicle tracking"> vehicle tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=traffic%20monitoring" title=" traffic monitoring"> traffic monitoring</a> </p> <a href="https://publications.waset.org/abstracts/34948/daynight-detector-for-vehicle-tracking-in-traffic-monitoring-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34948.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">555</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">85</span> Heat Source Temperature for Centered Heat Source on Isotropic Plate with Lower Surface Forced Cooling Using Neural Network and Three Different Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fadwa%20Haraka">Fadwa Haraka</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20Elouatouati"> Ahmad Elouatouati</a>, <a href="https://publications.waset.org/abstracts/search?q=Mourad%20Taha%20Janan"> Mourad Taha Janan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study, we propose a neural network based method in order to calculate the heat source temperature of isotropic plate with lower surface forced cooling. To validate the proposed model, the heat source temperatures values will be compared to the analytical method -variables separation- and finite element model. The mathematical simulation is done through 3D numerical simulation by COMSOL software considering three different materials: Aluminum, Copper, and Graphite. The proposed method will lead to a formulation of the heat source temperature based on the thermal and geometric properties of the base plate. <p class="card-text"><strong>Keywords:</strong> <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=thermal%20resistance" title=" thermal resistance"> thermal resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20element%20simulation" title=" finite element simulation"> finite element simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20network" title=" neural network"> neural network</a> </p> <a href="https://publications.waset.org/abstracts/67351/heat-source-temperature-for-centered-heat-source-on-isotropic-plate-with-lower-surface-forced-cooling-using-neural-network-and-three-different-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67351.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">357</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">84</span> Effect of Segregation Pattern of Mn, Si, and C on through Thickness Microstructure and Properties of Hot Rolled Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Waleed%20M.%20Al-Othman">Waleed M. Al-Othman</a>, <a href="https://publications.waset.org/abstracts/search?q=Hamid%20Bayati"> Hamid Bayati</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdullah%20Al-Shahrani"> Abdullah Al-Shahrani</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitham%20Al-Jabr"> Haitham Al-Jabr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Pearlite bands commonly form parallel to the surface of the hot rolled steel and have significant influence on the properties of the steel. This study investigated the correlation between segregation pattern of Mn, Si, C and formation of the pearlite bands in hot rolled Gr 60 steel plate. Microstructural study indicated formation of a distinguished thick band at centerline of the plate with number of parallel bands through thickness of the steel plate. The thickness, frequency, and continuity of the bands are reduced from mid-thickness toward external surface of the steel plate. Analysis showed a noticeable increase of C, Si and Mn levels within the bands. Such alloying segregation takes place during metal solidification. EDS analysis verified presence of particles rich in Ti, Nb, Mn, C, N, within the bands. Texture analysis by Electron Backscatter Detector (EBSD) indicated the grains size/misorientation can noticeably change within the bands. Effect of banding on through-thickness properties of the steel was examined by carrying out microhardness, toughness and tensile tests. Results suggest the Mn and C contents are changed in sinusoidal pattern through thickness of the hot rolled plate and pearlite bands are formed at the peaks of this sinusoidal segregation pattern. Changes in grain size/misorientation, formation of highly alloyed particles, and pearlite within these bands, facilitate crack formation along boundaries of these bands. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pearlite%20band" title="pearlite band">pearlite band</a>, <a href="https://publications.waset.org/abstracts/search?q=alloying%20segregation" title=" alloying segregation"> alloying segregation</a>, <a href="https://publications.waset.org/abstracts/search?q=hot%20rolling" title=" hot rolling"> hot rolling</a>, <a href="https://publications.waset.org/abstracts/search?q=Ti" title=" Ti"> Ti</a>, <a href="https://publications.waset.org/abstracts/search?q=Nb" title="Nb">Nb</a>, <a href="https://publications.waset.org/abstracts/search?q=N" title=" N"> N</a>, <a href="https://publications.waset.org/abstracts/search?q=C" title=" C"> C</a> </p> <a href="https://publications.waset.org/abstracts/100222/effect-of-segregation-pattern-of-mn-si-and-c-on-through-thickness-microstructure-and-properties-of-hot-rolled-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100222.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">137</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">83</span> Analysis of Brushless DC Motor with Trapezoidal Back EMF Using Matlab</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taha%20Ahmed%20Husain">Taha Ahmed Husain</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The dynamic characteristics such as speed and torque as well as voltages and currents of pwm brushless DC motor inverter are analyzed with a MATLAB model. The contribution of external load torque and friction torque is monitored. The switching function technique is adopted for the current control of the embedded three phase inverter that drives the brushless DC motor.In switching functions the power conversions circuits can be modeled according to their functions rather than circuit topologies. Therefore, it can achieve simplification of the overall power conversion functions. The trapezoidal type (back emf) is used in the model as ithas lower switching loss compared with sinusoidal type (back emf). Results show reliable time analysis for speed, torque, phase and line voltages and currents and the effect of current commutation is clearly observed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=BLDC%20motor" title="BLDC motor">BLDC motor</a>, <a href="https://publications.waset.org/abstracts/search?q=brushless%20dc%20motors" title=" brushless dc motors"> brushless dc motors</a>, <a href="https://publications.waset.org/abstracts/search?q=pwm%20inverter" title=" pwm inverter"> pwm inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=DC%20motor%20control" title=" DC motor control"> DC motor control</a>, <a href="https://publications.waset.org/abstracts/search?q=trapezoidal%20back%20emf" title=" trapezoidal back emf"> trapezoidal back emf</a>, <a href="https://publications.waset.org/abstracts/search?q=ripple%20torque%20in%20brushless%20DC%20motor" title=" ripple torque in brushless DC motor"> ripple torque in brushless DC motor</a> </p> <a href="https://publications.waset.org/abstracts/22803/analysis-of-brushless-dc-motor-with-trapezoidal-back-emf-using-matlab" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22803.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">598</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=Haitham%20Taha&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Haitham%20Taha&page=3">3</a></li> <li class="page-item"><a class="page-link" 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