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Abdelkader</title> <meta name="description" content="Search results for: Chouaih Abdelkader"> <meta name="keywords" content="Chouaih Abdelkader"> <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 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Chouaih Abdelkader"> <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> 93</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Chouaih Abdelkader</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">93</span> Theoretical and Experimental Electrostatic Potential around the M-Nitrophenol Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Drissi%20Mokhtaria">Drissi Mokhtaria</a>, <a href="https://publications.waset.org/abstracts/search?q=Chouaih%20Abdelkader"> Chouaih Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Fodil%20Hamzaoui"> Fodil Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Our work is about a comparison of experimental and theoretical results of the electron charge density distribution and the electrostatic potential around the M-Nitrophenol Molecule (m-NPH) kwon for its interesting physical characteristics. The molecular experimental results have been obtained from a high-resolution X-ray diffraction study. Theoretical investigations were performed under the Gaussian program using the Density Functional Theory at B3LYP level of theory at 6-31G*. The multipolar model of Hansen and Coppens was used for the experimental electron charge density distribution around the molecule, while we used the DFT methods for the theoretical calculations. The electron charge density obtained in both methods allowed us to find out the different molecular properties such us the electrostatic potential and the dipole moment which were finally subject to a comparison leading to an outcome of a good matching results obtained in both methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electron%20charge%20density" title="electron charge density">electron charge density</a>, <a href="https://publications.waset.org/abstracts/search?q=m-nitrophenol" title=" m-nitrophenol"> m-nitrophenol</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20optical%20compound" title=" nonlinear optical compound"> nonlinear optical compound</a>, <a href="https://publications.waset.org/abstracts/search?q=electrostatic%20potential" title=" electrostatic potential"> electrostatic potential</a>, <a href="https://publications.waset.org/abstracts/search?q=optimized%20geometric" title=" optimized geometric"> optimized geometric</a> </p> <a href="https://publications.waset.org/abstracts/3123/theoretical-and-experimental-electrostatic-potential-around-the-m-nitrophenol-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3123.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">268</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> Molecular Electrostatic Potential in Z-3N(2-Ethoxyphenyl), 2-N'(2-Ethoxyphenyl) Imino Thiazolidin-4-one Molecule by Ab Initio and DFT Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Manel%20Boulakoud">Manel Boulakoud</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Chouaih"> Abdelkader Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=Fodil%20Hamzaoui"> Fodil Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work we are interested in the determination of the Molecular electrostatic potential (MEP) in Z-3N(2-Ethoxyphenyl), 2-N’(2-Ethoxyphenyl) imino thiazolidin-4-one molecule by ab initio and Density Functional Theory (DFT) in the ground state. The MEP is related to the electronic density and is a very useful descriptor in understanding sites for electrophilic attack and nucleophilic reactions as well as hydrogen bonding interactions. First, geometry optimization was carried out using Hartree–Fock (HF) and DFT methods with 6-311G(d,p) basis set. In order to get more information on the molecule, its stability has been analyzed by natural bond orbital (NBO) analysis. Mulliken population analyses have been calculated. Finally, the molecular electrostatic potential (MEP) and HOMO-LUMO energy levels have been performed. The calculated HOMO and LUMO energies show also the charge transfer within the molecule. The energy gap obtained is about 4 eV which explain the stability of the studied compound. The obtained molecular electrostatic potential from the two methods confirms the nature of the electron charge transfer at the molecular shell and locate the electropositive part and the electronegative part in molecular scale of the title compound. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=ab%20initio" title=" ab initio"> ab initio</a>, <a href="https://publications.waset.org/abstracts/search?q=HOMO-LUMO" title=" HOMO-LUMO"> HOMO-LUMO</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20compounds" title=" organic compounds"> organic compounds</a> </p> <a href="https://publications.waset.org/abstracts/43840/molecular-electrostatic-potential-in-z-3n2-ethoxyphenyl-2-n2-ethoxyphenyl-imino-thiazolidin-4-one-molecule-by-ab-initio-and-dft-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43840.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">535</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> Experimental and Theoretical Approach, Hirshfeld Surface, Reduced Density Gradient, Molecular Docking of a Thiourea Derivative</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Noureddine%20Benharkat">Noureddine Benharkat</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Chouaih"> Abdelkader Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=Nourdine%20Boukabcha"> Nourdine Boukabcha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A thiourea derivative compound was synthesized and subjected to structural analysis using single-crystal X-ray diffraction (XRD). The crystallographic data unveiled its crystallization in the P21/c space group within the monoclinic system. Examination of the dihedral angles indicated a notable non-planar structure. To support and interpret these resulats, density functional theory (DFT) calculations were conducted utilizing the B3LYP functional along with a 6–311 G (d, p) basis set. Additionally, to assess the contribution of intermolecular interactions, Hirshfeld surface analysis and 2D fingerprint plots were employed. Various types of interactions, whether weak intramolecular or intermolecular, within a molecule can significantly impact its stability. The distinctive signature of non-covalent interactions can be detected solely through electron density analysis. The NCI-RDG analysis was employed to investigate both repulsive and attractive van der Waals interactions while also calculating the energies associated with intermolecular interactions and their characteristics. Additionally, a molecular docking study was studied to explain the structure-activity relationship, revealing that the title compound exhibited an affinity energy of -6.8 kcal/mol when docked with B-DNA (1BNA). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20chemistry" title="computational chemistry">computational chemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=density%20functional%20theory" title=" density functional theory"> density functional theory</a>, <a href="https://publications.waset.org/abstracts/search?q=crystallography" title=" crystallography"> crystallography</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20docking" title=" molecular docking"> molecular docking</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20structure" title=" molecular structure"> molecular structure</a>, <a href="https://publications.waset.org/abstracts/search?q=powder%20x-ray%20diffraction" title=" powder x-ray diffraction"> powder x-ray diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20crystal%20x-ray%20diffraction" title=" single crystal x-ray diffraction"> single crystal x-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/184452/experimental-and-theoretical-approach-hirshfeld-surface-reduced-density-gradient-molecular-docking-of-a-thiourea-derivative" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184452.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">60</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> Transferring World Athletic Championship-Winning Principles to Entrepreneurship: The Case of Abdelkader El Mouaziz</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abderrahman%20Hassi">Abderrahman Hassi</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Bacadi"> Omar Bacadi</a>, <a href="https://publications.waset.org/abstracts/search?q=Khaoula%20Zitouni"> Khaoula Zitouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Abdelkader El Mouaziz is a Moroccan long-distance runner with a career-best time of 2:06:46 in the Chicago Marathon. El Mouaziz is a winner of the Madrid Marathon in 1994, the London Marathon in 1999 and 2001, as well as the New York Marathon in 2001. While he was playing for the Moroccan national team, he used to train in the Ifrane-Azrou region owing to its altitude, fresh forests, non-polluted air and quietness. After winning so many international competitions and retiring, he left his native Casablanca and went back to the Ifrane-Azrou region and started a business that employs ten people. In March 2010, El Mouaziz opened a bed and breakfast called Tourtite with a nice view on the mountain near the city of Ifrane in the way to Azrou. He wanted to give back to the region that helped him become a sport legend. His management style is not different than his sport style: performance and competitiveness combined with fair play. The objective of the present case study is to further enhance the understanding of the dynamics of transferring athletic championship-winning principles to entrepreneurial activities. The case study is a real-life situation and experience designed to provoke and stimulate reflections about a particular approach of management, especially for start-up businesses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sport" title="sport">sport</a>, <a href="https://publications.waset.org/abstracts/search?q=winning%20principles" title=" winning principles"> winning principles</a>, <a href="https://publications.waset.org/abstracts/search?q=entrepreneurship" title=" entrepreneurship"> entrepreneurship</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20El%20Mouaziz" title=" Abdelkader El Mouaziz"> Abdelkader El Mouaziz</a> </p> <a href="https://publications.waset.org/abstracts/6224/transferring-world-athletic-championship-winning-principles-to-entrepreneurship-the-case-of-abdelkader-el-mouaziz" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6224.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">277</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> Power Quality Improvement Using Interval Type-2 Fuzzy Logic Controller for Five-Level Shunt Active Power Filter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yousfi%20Abdelkader">Yousfi Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Chaker%20Abdelkader"> Chaker Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Bot%20Youcef"> Bot Youcef</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This article proposes a five-level shunt active power filter for power quality improvement using a interval type-2 fuzzy logic controller (IT2 FLC). The reference compensating current is extracted using the P-Q theory. The majority of works previously reported are based on two-level inverters with a conventional Proportional integral (PI) controller, which requires rigorous mathematical modeling of the system. In this paper, a IT2 FLC controlled five-level active power filter is proposed to overcome the problem associated with PI controller. The IT2 FLC algorithm is applied for controlling the DC-side capacitor voltage as well as the harmonic currents of the five-level active power filter. The active power filter with a IT2 FLC is simulated in MATLAB Simulink environment. The simulated response shows that the proposed shunt active power filter controller has produced a sinusoidal supply current with low harmonic distortion and in phase with the source voltage. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20quality" title="power quality">power quality</a>, <a href="https://publications.waset.org/abstracts/search?q=shunt%20active%20power%20filter" title=" shunt active power filter"> shunt active power filter</a>, <a href="https://publications.waset.org/abstracts/search?q=interval%20type-2%20fuzzy%20logic%20controller%20%28T2FL%29" title=" interval type-2 fuzzy logic controller (T2FL)"> interval type-2 fuzzy logic controller (T2FL)</a>, <a href="https://publications.waset.org/abstracts/search?q=multilevel%20inverter" title=" multilevel inverter"> multilevel inverter</a> </p> <a href="https://publications.waset.org/abstracts/117014/power-quality-improvement-using-interval-type-2-fuzzy-logic-controller-for-five-level-shunt-active-power-filter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/117014.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">178</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> X-Ray and DFT Electrostatics Parameters Determination of a Coumarin Derivative Compound C17H13NO3</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Y.%20Megrous">Y. Megrous</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The crystal structure of 4-Methyl-7-(salicylideneamino)coumarin C17H13NO3has been determined using X-ray diffraction to establish the configuration and stereochemistry of the molecule. This crystal is characterized by its nolinear activity. The molecular electron charge density distribution of the title compound is described accurately using the multipolar model of Hansen and Coppens. The net atomic charge and the molecular dipole moment in-crystal have been determined in order to understand the nature of inter-and intramolecular charge transfer. The study present the thermal motion and the structural analysis obtained from the least-square refinement on F2,this study has also allowed us to determine the electrostatic potential and therefore locate the electropositive part and the electronegative part in molecular scale of the title compound. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electron%20charge%20density" title="electron charge density">electron charge density</a>, <a href="https://publications.waset.org/abstracts/search?q=net%20atomic%20charge" title=" net atomic charge"> net atomic charge</a>, <a href="https://publications.waset.org/abstracts/search?q=molecular%20dipole%20moment" title=" molecular dipole moment"> molecular dipole moment</a>, <a href="https://publications.waset.org/abstracts/search?q=X-ray%20diffraction" title=" X-ray diffraction"> X-ray diffraction</a> </p> <a href="https://publications.waset.org/abstracts/24669/x-ray-and-dft-electrostatics-parameters-determination-of-a-coumarin-derivative-compound-c17h13no3" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24669.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">456</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> Nasopharyngeal Cancer in Children and Adolescents: Experience of Emir Abdelkader Cancer Center of Oran Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taleb%20L.">Taleb L.</a>, <a href="https://publications.waset.org/abstracts/search?q=Benarbia%20M."> Benarbia M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Brahmi%20M."> Brahmi M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Belmiloud%20H."> Belmiloud H.</a>, <a href="https://publications.waset.org/abstracts/search?q=Boukerche%20A."> Boukerche A.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction and purpose of the study: Cavum cancer in children and adolescents is rare and represents 8% of all nasopharyngeal cancers treated in our department. Our objective is to study its epidemiological, clinical, therapeutic, and evolutionary particularities. Material and methods: Retrospective study of 39 patients under 20 years old, treated for undifferentiated non-metastatic carcinoma of the nasopharynx at the Emir Abdelkader Cancer Center between 2014 and 2020. Results and statistical analysis: Median age was 14 years [7-19 years], with a sex ratio of 2.9. The median time to diagnosis was 5.6 months [1 to 14 months], the circumstances of the discovery of which were dominated by lymph node syndrome in 43.6% of cases (n=17) followed by a rhinological syndrome in 30.8% of cases (n=13). The tumor stage was T1 for two patients (5.1%), T2 for 8 (20.5%), T3 for 9 (23.1%), T4 for 20 (51.3%), N0 for 2 (5 .1%) N1 for 4 (10.3%), N2 for 28 (71.8%) and N3 for 5 (12.8%). All patients received induction chemotherapy followed by concomitant radiotherapy with cisplatin. The dose of irradiation delivered to the cavum and adenopathies was 66 Gy with fractionation of 2 Gy per session in 69.2% of cases (n=27) and 1.8 Gy in 30.8% of cases (n=12). With a median follow-up of 51 months (15 to 97 months), the locoregional, metastatic, specific, and overall relapse-free survival rates at five years were 91.1%, 73.5%, 66.1%, and 68.4, respectively. Conclusion: Chemotherapy and radiotherapy treatment of cavum cancer in children and adolescents has allowed excellent locoregional control despite the advanced stage of the disease. However, the frequency of metastatic relapses could justify the possible use of systemic maintenance treatment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cancer" title="cancer">cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=nasopharynx" title=" nasopharynx"> nasopharynx</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title=" radiotherapy"> radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=chemotherapy" title=" chemotherapy"> chemotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=survival" title=" survival"> survival</a> </p> <a href="https://publications.waset.org/abstracts/158304/nasopharyngeal-cancer-in-children-and-adolescents-experience-of-emir-abdelkader-cancer-center-of-oran-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158304.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">111</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> Spectroscopic, Molecular Structure and Electrostatic Potential, Polarizability, Hyperpolarizability, and HOMO–LUMO Analysis of Monomeric and Dimeric Structures of N-(2-Methylphenyl)-2-Nitrobenzenesulfonamide </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Didaoui">A. Didaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benhalima"> N. Benhalima</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Elkeurti"> M. Elkeurti</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monomer and dimer structures of the title molecule have been obtained from density functional theory (DFT) B3LYP method with 6-31G (d,p) as basis set calculations. The optimized geometrical parameters obtained by B3LYP/6-31G (d,p) method show good agreement with xperimental X-ray data. The polarizability and first order hyperpolarizabilty of the title molecule were calculated and interpreted. the intermolecular N–H•••O hydrogen bonds are discussed in dimer structure of the molecule. The vibrational wave numbers and their assignments were examined theoretically using the Gaussian 03 set of quantum chemistry codes. The predicted frontier molecular orbital energies at B3LYP/6-31G(d,p) method set show that charge transfer occurs within the molecule. The frontier molecular orbital calculations clearly show the inverse relationship of HOMO–LUMO gap with the total static hyperpolarizability. The results also show that N-(2-Methylphenyl)-2-nitrobenzenesulfonamide molecule may have nonlinear optical (NLO) comportment with non-zero values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaussian%2003" title=" Gaussian 03"> Gaussian 03</a>, <a href="https://publications.waset.org/abstracts/search?q=NLO" title=" NLO"> NLO</a>, <a href="https://publications.waset.org/abstracts/search?q=N-%282-Methylphenyl%29-2-nitrobenzenesulfonamide" title=" N-(2-Methylphenyl)-2-nitrobenzenesulfonamide"> N-(2-Methylphenyl)-2-nitrobenzenesulfonamide</a> </p> <a href="https://publications.waset.org/abstracts/19477/spectroscopic-molecular-structure-and-electrostatic-potential-polarizability-hyperpolarizability-and-homo-lumo-analysis-of-monomeric-and-dimeric-structures-of-n-2-methylphenyl-2-nitrobenzenesulfonamide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19477.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">549</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> The Spectroscopic, Molecular Structure and Electrostatic Potential, Polarizability Hyperpolarizability, and Homo–Lumo Analysis of Monomeric and Dimeric Structures of 2-Chloro-N-(2 Methylphenyl) Benzamide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Khelloul">N. Khelloul</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benhalima"> N. Benhalima</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monomer and dimer structures of the title molecule have been obtained from density functional theory (DFT) B3LYP method with 6-31G (d,p) as basis set calculations. The optimized geometrical parameters obtained by B3LYP/6-31G (d,p) method shows good agreement with experimental X-ray data. The polarizability and first order hyperpolarizabilty of the title molecule were calculated and interpreted. The intermolecular N–H•••O hydrogen bonds are discussed in dimer structure of the molecule. The vibrational wave numbers and their assignments were examined theoretically using the Gaussian 09 set of quantum chemistry codes. The predicted frontier molecular orbital energies at B3LYP/6-31G(d,p) method set show that charge transfer occurs within the molecule. The frontier molecular orbital calculations clearly show the inverse relationship of HOMO–LUMO gap with the total static hyperpolarizability. The results also show that 2-Chloro-N-(2-methylphenyl) benzamide 2 molecule may have nonlinear optical (NLO) comportment with non-zero values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=HOMO" title=" HOMO"> HOMO</a>, <a href="https://publications.waset.org/abstracts/search?q=LUMO" title=" LUMO"> LUMO</a>, <a href="https://publications.waset.org/abstracts/search?q=NLO" title=" NLO "> NLO </a> </p> <a href="https://publications.waset.org/abstracts/40183/the-spectroscopic-molecular-structure-and-electrostatic-potential-polarizability-hyperpolarizability-and-homo-lumo-analysis-of-monomeric-and-dimeric-structures-of-2-chloro-n-2-methylphenyl-benzamide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/40183.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">339</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> Phosphorous Acid: An Efficient and Recyclable Liquid Catalyst for the Synthesis of α-Aminophosphonates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hellal%20Abdelkader">Hellal Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Chafaa%20Salah"> Chafaa Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Touafri%20Lasnouni"> Touafri Lasnouni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A simple, efficient and general method has been developed for the high diastereoselective synthesis of diethyl α-aminophosphonates in water through “one-pot” three-component reaction of aromatic aldehydes, aminophenols and dialkyl phosphites in the presence of a low catalytic amount (10mol%) of phosphorous acid as highly stable catalyst is described. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=HOMO-LUMO" title=" HOMO-LUMO"> HOMO-LUMO</a>, <a href="https://publications.waset.org/abstracts/search?q=phosphonic%20acid" title=" phosphonic acid"> phosphonic acid</a>, <a href="https://publications.waset.org/abstracts/search?q=aminophenols" title=" aminophenols"> aminophenols</a> </p> <a href="https://publications.waset.org/abstracts/69866/phosphorous-acid-an-efficient-and-recyclable-liquid-catalyst-for-the-synthesis-of-a-aminophosphonates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69866.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">378</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> The Spectroscopic, Molecular Structure and Electrostatic Potential, Polarizability, Hyperpolarizability, and HOMO–LUMO Analysis of Monomeric and Dimeric Structures of N-(2-Methylphenyl)-2-Nitrobenzenesulfonamide</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Didaoui">A. Didaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benhalima"> N. Benhalima</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Elkeurti"> M. Elkeurti</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The monomer and dimer structures of the title molecule have been obtained from density functional theory (DFT) B3LYP method with 6-31G(d,p) as basis set calculations. The optimized geometrical parameters obtained by B3LYP/6-31G(d,p) method show good agreement with experimental X-ray data. The polarizability and first order hyperpolarizability of the title molecule were calculated and interpreted. The intermolecular N–H•••O hydrogen bonds are discussed in dimer structure of the molecule. The vibrational wave numbers and their assignments were examined theoretically using the Gaussian 03 set of quantum chemistry codes. The predicted frontier molecular orbital energies at B3LYP/6-31G(d,p) method set show that charge transfer occurs within the molecule. The frontier molecular orbital calculations clearly show the inverse relationship of HOMO–LUMO gap with the total static hyperpolarizability. The results also show that N-(2-Methylphenyl)-2-nitrobenzenesulfonamide molecule may have nonlinear optical (NLO) comportment with non-zero values. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DFT" title="DFT">DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=Gaussian%2003" title=" Gaussian 03"> Gaussian 03</a>, <a href="https://publications.waset.org/abstracts/search?q=NLO" title=" NLO"> NLO</a>, <a href="https://publications.waset.org/abstracts/search?q=N-%282-Methylphenyl%29-2-nitrobenzenesulfonamide" title=" N-(2-Methylphenyl)-2-nitrobenzenesulfonamide"> N-(2-Methylphenyl)-2-nitrobenzenesulfonamide</a>, <a href="https://publications.waset.org/abstracts/search?q=polarizability" title=" polarizability"> polarizability</a> </p> <a href="https://publications.waset.org/abstracts/18951/the-spectroscopic-molecular-structure-and-electrostatic-potential-polarizability-hyperpolarizability-and-homo-lumo-analysis-of-monomeric-and-dimeric-structures-of-n-2-methylphenyl-2-nitrobenzenesulfonamide" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18951.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">325</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">82</span> Electron Density Analysis and Nonlinear Optical Properties of Zwitterionic Compound </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih">A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benhalima"> N. Benhalima</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Boukabcha"> N. Boukabcha</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Rahmani"> R. Rahmani</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Zwitterionic compounds have received the interest of chemists and physicists due to their applications as nonlinear optical materials. Recently, zwitterionic compounds exhibiting high nonlinear optical activity have been investigated. In this context, the molecular electron charge density distribution of the title compound is described accurately using the multipolar model of Hansen and Coppens. The net atomic charge and the molecular dipole moment have been determined in order to understand the nature of inter- and intramolecular charge transfer. The study reveals the nature of intermolecular interactions including charge transfer and hydrogen bonds in the title compound. In this crystal, the molecules form dimers via intermolecular hydrogen bonds. The dimers are further linked by C–H...O hydrogen bonds into chains along the c crystallographic axis. This study has also allowed us to determine various nonlinear optical properties such as molecular electrostatic potential, polarizability, and hyperpolarizability of the title compound. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20compounds" title="organic compounds">organic compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=polarizability" title=" polarizability"> polarizability</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperpolarizability" title=" hyperpolarizability"> hyperpolarizability</a>, <a href="https://publications.waset.org/abstracts/search?q=dipole%20moment" title=" dipole moment"> dipole moment</a> </p> <a href="https://publications.waset.org/abstracts/26077/electron-density-analysis-and-nonlinear-optical-properties-of-zwitterionic-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26077.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">417</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">81</span> Place of Radiotherapy in the Treatment of Intracranial Meningiomas: Experience of the Cancer Center Emir Abdelkader of Oran Algeria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taleb%20L.">Taleb L.</a>, <a href="https://publications.waset.org/abstracts/search?q=Benarbia%20M."> Benarbia M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Boutira%20F.%20M."> Boutira F. M.</a>, <a href="https://publications.waset.org/abstracts/search?q=Allam%20H."> Allam H.</a>, <a href="https://publications.waset.org/abstracts/search?q=Boukerche%20A."> Boukerche A.</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction and purpose of the study: Meningiomas are the most common non-glial intracranial tumors in adults, accounting for approximately 30% of all central nervous system tumors. The aim of our study is to determine the epidemiological, clinical, therapeutic, and evolutionary characteristics of a cohort of patients with intracranial meningioma treated with radiotherapy at the Emir Abdelkader Cancer Center in Oran. Material and methods: This is a retrospective study of 44 patients during the period from 2014 to 2020. The overall survival and relapse-free survival curves were calculated using the Kaplan-Meier method. Results and statistical analysis: The median age of the patients was 49 years [21-76 years] with a clear female predominance (sex ratio=2.4). The average diagnostic delay was seven months [2 to 24 months], the circumstances of the discovery of which were dominated by headaches in 54.5% of cases (n=24), visual disturbances in 40.9% (n=18), and motor disorders in 15.9% (n=7). The seat of the tumor was essentially at the level of the base of the skull in 52.3% of patients (n=23), including 29.5% (n=13) at the level of the cavernous sinus, 27.3% (n=12) at the parasagittal level and 20.5% (n=9) at the convexity. The diagnosis was confirmed surgically in 36 patients (81.8%) whose anatomopathological study returned in favor of grades I, II, and III in respectively 40.9%, 29.5%, and 11.4% of the cases. Radiotherapy was indicated postoperatively in 45.5% of patients (n=20), exclusive in 27.3% (n=12) and after tumor recurrence in 27.3% of cases (n=18). The irradiation doses delivered were as follows: 50 Gy (20.5%), 54 Gy (65.9%), and 60 Gy (13.6%). With a median follow-up of 69 months, the probabilities of relapse-free survival and overall survival at three years are 93.2% and 95.4%, respectively, whereas they are 71.2% and 80.7% at five years. Conclusion: Meningiomas are common primary brain tumors. Most often benign but can also progress aggressively. Their treatment is essentially surgical, but radiotherapy retains its place in specific situations, allowing good tumor control and overall survival. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diagnosis" title="diagnosis">diagnosis</a>, <a href="https://publications.waset.org/abstracts/search?q=meningioma" title=" meningioma"> meningioma</a>, <a href="https://publications.waset.org/abstracts/search?q=surgery" title=" surgery"> surgery</a>, <a href="https://publications.waset.org/abstracts/search?q=radiotherapy" title=" radiotherapy"> radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=survival" title=" survival"> survival</a> </p> <a href="https://publications.waset.org/abstracts/158324/place-of-radiotherapy-in-the-treatment-of-intracranial-meningiomas-experience-of-the-cancer-center-emir-abdelkader-of-oran-algeria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158324.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">80</span> Control and Automation of Sensors in Metering System of Fluid</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Harrouz">Abdelkader Harrouz</a>, <a href="https://publications.waset.org/abstracts/search?q=Omar%20Harrouz"> Omar Harrouz</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Benatiallah"> Ali Benatiallah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is to present the essential definitions, roles and characteristics of automation of metering system. We discuss measurement, data acquisition and metrological control of a signal sensor from dynamic metering system. After that, we present control of instruments of metering system of fluid with more detailed discussions to the reference standards. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=communication" title="communication">communication</a>, <a href="https://publications.waset.org/abstracts/search?q=metering" title=" metering"> metering</a>, <a href="https://publications.waset.org/abstracts/search?q=computer" title=" computer"> computer</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor" title=" sensor "> sensor </a> </p> <a href="https://publications.waset.org/abstracts/24257/control-and-automation-of-sensors-in-metering-system-of-fluid" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24257.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">79</span> Agglomerative Hierarchical Clustering Using the Tθ Family of Similarity Measures</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Salima%20Kouici">Salima Kouici</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Khelladi"> Abdelkader Khelladi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we begin with the presentation of the Tθ family of usual similarity measures concerning multidimensional binary data. Subsequently, some properties of these measures are proposed. Finally, the impact of the use of different inter-elements measures on the results of the Agglomerative Hierarchical Clustering Methods is studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=binary%20data" title="binary data">binary data</a>, <a href="https://publications.waset.org/abstracts/search?q=similarity%20measure" title=" similarity measure"> similarity measure</a>, <a href="https://publications.waset.org/abstracts/search?q=T%CE%B8%20measures" title=" Tθ measures"> Tθ measures</a>, <a href="https://publications.waset.org/abstracts/search?q=agglomerative%20hierarchical%20clustering" title=" agglomerative hierarchical clustering"> agglomerative hierarchical clustering</a> </p> <a href="https://publications.waset.org/abstracts/13108/agglomerative-hierarchical-clustering-using-the-tth-family-of-similarity-measures" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13108.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">481</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">78</span> Investigation Of Eugan's, Optical Properties With Dft</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bahieddine.%20Bouabdellah">Bahieddine. Bouabdellah</a>, <a href="https://publications.waset.org/abstracts/search?q=Benameur.%20Amiri"> Benameur. Amiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader.nouri"> Abdelkader.nouri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Europium-doped gallium nitride (EuGaN) is a promising material for optoelectronic and thermoelectric devices. This study investigates its optical properties using density functional theory (DFT) with the FP-LAPW method and MBJ+U correction. The simulation substitutes a gallium atom with europium in a hexagonal GaN lattice (6% doping). Distinct absorption peaks are observed in the optical analysis. These results highlight EuGaN's potential for various applications and pave the way for further research on rare earth-doped materials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=eugan" title="eugan">eugan</a>, <a href="https://publications.waset.org/abstracts/search?q=fp-lapw" title=" fp-lapw"> fp-lapw</a>, <a href="https://publications.waset.org/abstracts/search?q=dft" title=" dft"> dft</a>, <a href="https://publications.waset.org/abstracts/search?q=wien2k" title=" wien2k"> wien2k</a>, <a href="https://publications.waset.org/abstracts/search?q=mbj%20hubbard" title=" mbj hubbard"> mbj hubbard</a> </p> <a href="https://publications.waset.org/abstracts/185924/investigation-of-eugans-optical-properties-with-dft" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185924.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">66</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">77</span> Theoretical and Experimental Electrostatic Parameters Determination of 4-Methyl-N-[(5- Nitrothiophen-2-Ylmethylidene)] Aniline Compound</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=N.%20Boukabcha">N. Boukabcha</a>, <a href="https://publications.waset.org/abstracts/search?q=Y.%20Megrouss"> Y. Megrouss</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Benhalima"> N. Benhalima</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Yahiaoui"> S. Yahiaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Chouaih"> A. Chouaih</a>, <a href="https://publications.waset.org/abstracts/search?q=F.%20Hamzaoui"> F. Hamzaoui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present the electron density analysis of organic compound 4-methyl-N-[(5- nitrothiophen-2-ylmethylidene)] aniline with chemical formula C12H10N2O2S. Indeed, determining the electrostatic properties of nonlinear optical organic compounds requires knowledge of the distribution of the electron density with high precision. On the other hand, a structural analysis is performed. Two methods are used to obtain the structure, X-ray diffraction and theoretical calculation with density functional theory (DFT). The electron density study is performed using the Mopro program1503 based on the multipolar model of Hansen and Coppens. Electron density analysis allows determination of the value and orientation of the dipole moment. The net atomic charges, electrostatic potential and the molecular dipole moment have been determined in order to understand the nature of inter- and intramolecular charge transfer. The study reveals the nature of intermolecular interactions including charge transfer and hydrogen bonds in the title compound. Crystallographic data: monoclinic system - space group P21 / n. Celle parameters: a = 4.7606 (4) Å, b = 22.415 (2) Å, c = 10.7008 (15) Å, β = 92.566 (13) 0, V = 1140.7 (2) Å3, Z = 4, R = 0.0034 for 2693 observed reflections. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electron%20density" title="electron density">electron density</a>, <a href="https://publications.waset.org/abstracts/search?q=dipole%20moment" title=" dipole moment"> dipole moment</a>, <a href="https://publications.waset.org/abstracts/search?q=electrostatic%20potential" title=" electrostatic potential"> electrostatic potential</a>, <a href="https://publications.waset.org/abstracts/search?q=DFT" title=" DFT"> DFT</a>, <a href="https://publications.waset.org/abstracts/search?q=Mopro" title=" Mopro"> Mopro</a> </p> <a href="https://publications.waset.org/abstracts/42322/theoretical-and-experimental-electrostatic-parameters-determination-of-4-methyl-n-5-nitrothiophen-2-ylmethylidene-aniline-compound" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42322.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">313</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">76</span> Intelligent Control Design of Car Following Behavior Using Fuzzy Logic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Merah">Abdelkader Merah</a>, <a href="https://publications.waset.org/abstracts/search?q=Kada%20Hartani"> Kada Hartani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A reference model based control approach for improving behavior following car is proposed in this paper. The reference model is nonlinear and provides dynamic solutions consistent with safety constraints and comfort specifications. a robust fuzzy logic based control strategy is further proposed in this paper. A set of simulation results showing the suitability of the proposed technique for various demanding cenarios is also included in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=reference%20model" title="reference model">reference model</a>, <a href="https://publications.waset.org/abstracts/search?q=longitudinal%20control" title=" longitudinal control"> longitudinal control</a>, <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=design%20of%20car" title=" design of car"> design of car</a> </p> <a href="https://publications.waset.org/abstracts/14210/intelligent-control-design-of-car-following-behavior-using-fuzzy-logic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14210.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">430</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">75</span> Global Optimization: The Alienor Method Mixed with Piyavskii-Shubert Technique</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Guettal%20Djaouida">Guettal Djaouida</a>, <a href="https://publications.waset.org/abstracts/search?q=Ziadi%20Abdelkader"> Ziadi Abdelkader</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we study a coupling of the Alienor method with the algorithm of Piyavskii-Shubert. The classical multidimensional global optimization methods involves great difficulties for their implementation to high dimensions. The Alienor method allows to transform a multivariable function into a function of a single variable for which it is possible to use efficient and rapid method for calculating the the global optimum. This simplification is based on the using of a reducing transformation called Alienor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=global%20optimization" title="global optimization">global optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=reducing%20transformation" title=" reducing transformation"> reducing transformation</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-dense%20curves" title=" α-dense curves"> α-dense curves</a>, <a href="https://publications.waset.org/abstracts/search?q=Alienor%20method" title=" Alienor method"> Alienor method</a>, <a href="https://publications.waset.org/abstracts/search?q=Piyavskii-Shubert%20algorithm" title=" Piyavskii-Shubert algorithm"> Piyavskii-Shubert algorithm</a> </p> <a href="https://publications.waset.org/abstracts/6505/global-optimization-the-alienor-method-mixed-with-piyavskii-shubert-technique" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6505.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">503</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">74</span> Reliability-Simulation of Composite Tubular Structure under Pressure by Finite Elements Methods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Hocine">Abdelkader Hocine</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelhakim%20Maizia"> Abdelhakim Maizia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The exponential growth of reinforced fibers composite materials use has prompted researchers to step up their work on the prediction of their reliability. Owing to differences between the properties of the materials used for the composite, the manufacturing processes, the load combinations and types of environment, the prediction of the reliability of composite materials has become a primary task. Through failure criteria, TSAI-WU and the maximum stress, the reliability of multilayer tubular structures under pressure is the subject of this paper, where the failure probability of is estimated by the method of Monte Carlo. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=composite" title="composite">composite</a>, <a href="https://publications.waset.org/abstracts/search?q=design" title=" design"> design</a>, <a href="https://publications.waset.org/abstracts/search?q=monte%20carlo" title=" monte carlo"> monte carlo</a>, <a href="https://publications.waset.org/abstracts/search?q=tubular%20structure" title=" tubular structure"> tubular structure</a>, <a href="https://publications.waset.org/abstracts/search?q=reliability" title=" reliability"> reliability</a> </p> <a href="https://publications.waset.org/abstracts/45435/reliability-simulation-of-composite-tubular-structure-under-pressure-by-finite-elements-methods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45435.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">464</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">73</span> On the Efficiency of the Algerian FRR Sovereign Fund</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Guendouz">Abdelkader Guendouz</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatima%20Zohra%20Adel"> Fatima Zohra Adel</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since about two decades, the Algerian government created a new instrument in the field of its fiscal policy, which is the FRR (Fonds de Régulation des Recettes). The FRR is a sovereign fund, which the initial role was saving the surplus generated by the fixation of a referential oil price to establish the state budget in the aim equilibrium between budgetary incomes and public expenditures. After a while, the government turns to use this instrument in boosting the public investment more than keeping for funding a deficit budget in periods of crisis. This lead to ask some justified questions about the efficiency of this sovereign fund and its real role. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=FRR%20sovereign%20fund" title="FRR sovereign fund">FRR sovereign fund</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20expenditures" title=" public expenditures"> public expenditures</a>, <a href="https://publications.waset.org/abstracts/search?q=public%20investment" title=" public investment"> public investment</a>, <a href="https://publications.waset.org/abstracts/search?q=efficiency" title=" efficiency"> efficiency</a> </p> <a href="https://publications.waset.org/abstracts/33582/on-the-efficiency-of-the-algerian-frr-sovereign-fund" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33582.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">337</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">72</span> Optimizing the Probabilistic Neural Network Training Algorithm for Multi-Class Identification</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelhadi%20Lotfi">Abdelhadi Lotfi</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Benyettou"> Abdelkader Benyettou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, a training algorithm for probabilistic neural networks (PNN) is presented. The algorithm addresses one of the major drawbacks of PNN, which is the size of the hidden layer in the network. By using a cross-validation training algorithm, the number of hidden neurons is shrunk to a smaller number consisting of the most representative samples of the training set. This is done without affecting the overall architecture of the network. Performance of the network is compared against performance of standard PNN for different databases from the UCI database repository. Results show an important gain in network size and performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=classification" title="classification">classification</a>, <a href="https://publications.waset.org/abstracts/search?q=probabilistic%20neural%20networks" title=" probabilistic neural networks"> probabilistic neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20optimization" title=" network optimization"> network optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=pattern%20recognition" title=" pattern recognition"> pattern recognition</a> </p> <a href="https://publications.waset.org/abstracts/104139/optimizing-the-probabilistic-neural-network-training-algorithm-for-multi-class-identification" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104139.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">262</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">71</span> Effect of the Fluid Temperature on the Crude Oil Fouling in the Heat Exchangers of Algiers Refinery</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rima%20Harche">Rima Harche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Mouheb"> Abdelkader Mouheb</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Algiers refinery as all the other refineries always suffers from the problem of stopping of the tubes of heat exchanger. For that a study experimental of this phenomenon was undertaken in site on the cell of heat exchangers E101 (E101 CBA and E101 EDF) intended for the heating of the crude before its fractionation, which are exposed to the problem of the fouling on the side tubes exchangers. It is of tube-calenders type with head floating. Each cell is made up of three heat exchangers, laid out in series. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fouling" title="fouling">fouling</a>, <a href="https://publications.waset.org/abstracts/search?q=fluid%20temperatue" title=" fluid temperatue "> fluid temperatue </a>, <a href="https://publications.waset.org/abstracts/search?q=oil" title=" oil"> oil</a>, <a href="https://publications.waset.org/abstracts/search?q=tubular%20heat%20exchanger" title=" tubular heat exchanger"> tubular heat exchanger</a>, <a href="https://publications.waset.org/abstracts/search?q=fouling%20resistance" title=" fouling resistance"> fouling resistance</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling" title=" modeling"> modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer%20coefficient" title=" heat transfer coefficient"> heat transfer coefficient</a> </p> <a href="https://publications.waset.org/abstracts/17999/effect-of-the-fluid-temperature-on-the-crude-oil-fouling-in-the-heat-exchangers-of-algiers-refinery" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17999.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">432</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">70</span> Data Mining in Medicine Domain Using Decision Trees and Vector Support Machine</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djamila%20Benhaddouche">Djamila Benhaddouche</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Benyettou"> Abdelkader Benyettou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we used data mining to extract biomedical knowledge. In general, complex biomedical data collected in studies of populations are treated by statistical methods, although they are robust, they are not sufficient in themselves to harness the potential wealth of data. For that you used in step two learning algorithms: the Decision Trees and Support Vector Machine (SVM). These supervised classification methods are used to make the diagnosis of thyroid disease. In this context, we propose to promote the study and use of symbolic data mining techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biomedical%20data" title="biomedical data">biomedical data</a>, <a href="https://publications.waset.org/abstracts/search?q=learning" title=" learning"> learning</a>, <a href="https://publications.waset.org/abstracts/search?q=classifier" title=" classifier"> classifier</a>, <a href="https://publications.waset.org/abstracts/search?q=algorithms%20decision%20tree" title=" algorithms decision tree"> algorithms decision tree</a>, <a href="https://publications.waset.org/abstracts/search?q=knowledge%20extraction" title=" knowledge extraction"> knowledge extraction</a> </p> <a href="https://publications.waset.org/abstracts/15138/data-mining-in-medicine-domain-using-decision-trees-and-vector-support-machine" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15138.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">559</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">69</span> Sizing of Hybrid Source Battery/Supercapacitor for Automotive Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laid%20Degaa">Laid Degaa</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Bendjedia"> Bachir Bendjedia</a>, <a href="https://publications.waset.org/abstracts/search?q=Nassim%20Rizoug"> Nassim Rizoug</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Saidane"> Abdelkader Saidane</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Energy storage system is a key aspect for the development of clean cars. The work proposed here deals with the modeling of hybrid storage sources composed of a combination of lithium-ion battery and supercapacitors. Simulation results show the performance of the active model for a hybrid source and confirm the feasibility of our approach. In this context, sizing of the electrical energy supply is carried out. The aim of this sizing is to propose an 'optimal' solution that improves the performance of electric vehicles in term of weight, cost and aging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=battery" title="battery">battery</a>, <a href="https://publications.waset.org/abstracts/search?q=electric%20vehicles" title=" electric vehicles"> electric vehicles</a>, <a href="https://publications.waset.org/abstracts/search?q=energy" title=" energy"> energy</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20storage" title=" hybrid storage"> hybrid storage</a>, <a href="https://publications.waset.org/abstracts/search?q=supercapacitor" title=" supercapacitor"> supercapacitor</a> </p> <a href="https://publications.waset.org/abstracts/81313/sizing-of-hybrid-source-batterysupercapacitor-for-automotive-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/81313.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">792</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">68</span> Bi-Functional Natural Carboxylic Acid Catalysts for the Synthesis of Diethyl α-Aminophosphonates in Aqueous Media</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hellal%20Abdelkader">Hellal Abdelkader</a>, <a href="https://publications.waset.org/abstracts/search?q=Chafaa%20Salah"> Chafaa Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Boudjemaa%20Fouzia"> Boudjemaa Fouzia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A new, convenient, and high yielding procedure for the preparation of diethyl α-aminophosphonates in water via Kabachnik-Fields reaction by one-pot reaction of aromatic aldehydes, ortho-aminophenols, and dialkylphosphites in the presence of a low catalytic amount of citric, malic, tartaric, and oxalic acids as a natural, bi-functional, and highly stable catalyst is described, the obtained products were characterized by elemental analyses, molar conductance, magnetic susceptibility, FTIR, Uv-Vis spectral data, NMR-C, NMR-H, and NMR-P analyses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%CE%B1-aminophosphonates" title="α-aminophosphonates">α-aminophosphonates</a>, <a href="https://publications.waset.org/abstracts/search?q=aminophenols" title=" aminophenols"> aminophenols</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20acids" title=" natural acids"> natural acids</a>, <a href="https://publications.waset.org/abstracts/search?q=aqueous%20media" title=" aqueous media"> aqueous media</a>, <a href="https://publications.waset.org/abstracts/search?q=Kabachnik-Fields%20reaction" title=" Kabachnik-Fields reaction"> Kabachnik-Fields reaction</a> </p> <a href="https://publications.waset.org/abstracts/33644/bi-functional-natural-carboxylic-acid-catalysts-for-the-synthesis-of-diethyl-a-aminophosphonates-in-aqueous-media" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33644.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">336</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">67</span> Size Distribution Effect of InAs/InP Self–Organized Quantum Dots on Optical Properties </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Nouri">Abdelkader Nouri</a>, <a href="https://publications.waset.org/abstracts/search?q=M%E2%80%99hamed%20Bouslama"> M’hamed Bouslama</a>, <a href="https://publications.waset.org/abstracts/search?q=Faouzi%20Saidi"> Faouzi Saidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hassan%20Maaref"> Hassan Maaref</a>, <a href="https://publications.waset.org/abstracts/search?q=Michel%20Gendry"> Michel Gendry</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Self-organized InAs quantum dots (QDs) have been grown on 3,1% InP (110) lattice mismatched substrate by Solid Source Molecular Beam Epitaxy (SSMBE). Stranski-Krastanov mode growth has been used to create self-assembled 3D islands on InAs wetting layer (WL). The optical quality depending on the temperature and power is evaluated. In addition, Atomic Force Microscopy (AFM) images shows inhomogeneous island dots size distribution due to temperature coalescence. The quantum size effect was clearly observed through the spectra photoluminescence (PL) shape. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=AFM" title="AFM">AFM</a>, <a href="https://publications.waset.org/abstracts/search?q=InAs%20QDs" title=" InAs QDs"> InAs QDs</a>, <a href="https://publications.waset.org/abstracts/search?q=PL" title=" PL"> PL</a>, <a href="https://publications.waset.org/abstracts/search?q=SSMBE" title=" SSMBE"> SSMBE</a> </p> <a href="https://publications.waset.org/abstracts/20670/size-distribution-effect-of-inasinp-self-organized-quantum-dots-on-optical-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20670.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">687</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">66</span> Postoperative Radiotherapy in Cancers of the Larynx: Experience of the Emir Abdelkader Cancer Center of Oran, about 89 Cases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Taleb%20Lotfi">Taleb Lotfi</a>, <a href="https://publications.waset.org/abstracts/search?q=Benarbia%20Maheidine"> Benarbia Maheidine</a>, <a href="https://publications.waset.org/abstracts/search?q=Allam%20Hamza"> Allam Hamza</a>, <a href="https://publications.waset.org/abstracts/search?q=Boutira%20Fatima"> Boutira Fatima</a>, <a href="https://publications.waset.org/abstracts/search?q=Boukerche%20Abdelbaki"> Boukerche Abdelbaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction and purpose of the study: This is a retrospective single-center study with an analytical aim to determine the prognostic factors for relapse in patients treated with radiotherapy after total laryngectomy with lymph node dissection for laryngeal cancer at the Emir Abdelkader cancer center in Oran (Algeria). Material and methods: During the study period from January 2014 to December 2018, eighty-nine patients (n=89) with squamous cell carcinoma of the larynx were treated with postoperative radiotherapy. Relapse-free survival was studied in the univariate analysis according to pre-treatment criteria using Kaplan-Meier survival curves. We performed a univariate analysis to identify relapse factors. Statistically significant factors have been studied in the multifactorial analysis according to the Cox model. Results and statistical analysis: The average age was 62.7 years (40-86 years). It was a squamous cell carcinoma in all cases. Postoperatively, the tumor was classified as pT3 and pT4 in 93.3% of patients. Histological lymph node involvement was found in 36 cases (40.4%), with capsule rupture in 39% of cases, while the limits of surgical excision were microscopically infiltrated in 11 patients (12.3%). Chemotherapy concomitant with radiotherapy was used in 67.4% of patients. With a median follow-up of 57 months (23 to 104 months), the probabilities of relapse-free survival and five-year overall survival are 71.2% and 72.4%, respectively. The factors correlated with a high risk of relapse were locally advanced tumor stage pT4 (p=0.001), tumor site in case of subglottic extension (p=0.0003), infiltrated surgical limits R1 (p=0.001), l lymph node involvement (p=0.002), particularly in the event of lymph node capsular rupture (p=0.0003) as well as the time between surgery and adjuvant radiotherapy (p=0.001). However, in the subgroup analysis, the major prognostic factors for disease-free survival were subglottic tumor extension (p=0.001) and time from surgery to adjuvant radiotherapy (p=0.005). Conclusion: Combined surgery and postoperative radiation therapy are effective treatment modalities in the management of laryngeal cancer. Close cooperation of the entire cervicofacial oncology team is essential, expressed during a multidisciplinary consultation meeting, with the need to respect the time between surgery and radiotherapy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=laryngeal%20cancer" title="laryngeal cancer">laryngeal cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=laryngectomy" title=" laryngectomy"> laryngectomy</a>, <a href="https://publications.waset.org/abstracts/search?q=postoperative%20radiotherapy" title=" postoperative radiotherapy"> postoperative radiotherapy</a>, <a href="https://publications.waset.org/abstracts/search?q=survival" title=" survival"> survival</a> </p> <a href="https://publications.waset.org/abstracts/158315/postoperative-radiotherapy-in-cancers-of-the-larynx-experience-of-the-emir-abdelkader-cancer-center-of-oran-about-89-cases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/158315.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">104</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">65</span> Modeling and Simulation of InAs/GaAs and GaSb/GaAS Quantum Dot Solar Cells in SILVACO TCAD</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fethi%20Benyettou">Fethi Benyettou</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Aissat"> Abdelkader Aissat</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Benammar"> M. A. Benammar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we use Silvaco TCAD software for modeling and simulations of standard GaAs solar cell, InAs/GaAs and GaSb/GaAs p-i-n quantum dot solar cell. When comparing 20-layer InAs/GaAs, GaSb/GaAs quantum dots solar cells with standard GaAs solar cell, the conversion efficiency in simulation results increased from 16.48 % to 22.6% and 16.48% to 22.42% respectively. Also, the absorption range edge of photons with low energies extended from 900 nm to 1200 nm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SILVACO%20TCAD" title="SILVACO TCAD">SILVACO TCAD</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20quantum%20dot" title=" the quantum dot"> the quantum dot</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation" title=" simulation"> simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=materials%20engineering" title=" materials engineering"> materials engineering</a> </p> <a href="https://publications.waset.org/abstracts/20994/modeling-and-simulation-of-inasgaas-and-gasbgaas-quantum-dot-solar-cells-in-silvaco-tcad" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20994.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">503</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">64</span> Realization of a (GIS) for Drilling (DWS) through the Adrar Region</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Djelloul%20Benatiallah">Djelloul Benatiallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Ali%20Benatiallah"> Ali Benatiallah</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdelkader%20Harouz"> Abdelkader Harouz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Geographic Information Systems (GIS) include various methods and computer techniques to model, capture digitally, store, manage, view and analyze. Geographic information systems have the characteristic to appeal to many scientific and technical field, and many methods. In this article we will present a complete and operational geographic information system, following the theoretical principles of data management and adapting to spatial data, especially data concerning the monitoring of drinking water supply wells (DWS) Adrar region. The expected results of this system are firstly an offer consulting standard features, updating and editing beneficiaries and geographical data, on the other hand, provides specific functionality contractors entered data, calculations parameterized and statistics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=GIS" title="GIS">GIS</a>, <a href="https://publications.waset.org/abstracts/search?q=DWS" title=" DWS"> DWS</a>, <a href="https://publications.waset.org/abstracts/search?q=drilling" title=" drilling"> drilling</a>, <a href="https://publications.waset.org/abstracts/search?q=Adrar" title=" Adrar "> Adrar </a> </p> <a href="https://publications.waset.org/abstracts/27960/realization-of-a-gis-for-drilling-dws-through-the-adrar-region" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27960.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light 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