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topology</title> <meta name="description" content="Search results for: k)-star topology"> <meta name="keywords" content="k)-star topology"> <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="k)-star topology"> <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> 311</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: k)-star topology</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">161</span> Direct Drive Double Fed Wind Generator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vlado%20Ostovic">Vlado Ostovic</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An electric machine topology characterized by single tooth winding in both stator and rotor is presented. The proposed machine is capable of operating as a direct drive double fed wind generator (DDDF, D3F) because it requires no gearbox and only a reduced-size converter. A wind turbine drive built around a D3F generator is cheaper to manufacture, requires less maintenance, and has a higher energy yield than its conventional counterparts. The single tooth wound generator of a D3F turbine has superb volume utilization and lower stator I2R losses due to its extremely short-end windings. Both stator and rotor of a D3F generator can be manufactured in segments, which simplifies its assembly and transportation to the site, and makes production cheaper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=direct%20drive" title="direct drive">direct drive</a>, <a href="https://publications.waset.org/abstracts/search?q=double%20fed%20generator" title=" double fed generator"> double fed generator</a>, <a href="https://publications.waset.org/abstracts/search?q=gearbox" title=" gearbox"> gearbox</a>, <a href="https://publications.waset.org/abstracts/search?q=permanent%20magnet%20generators" title=" permanent magnet generators"> permanent magnet generators</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20tooth%20winding" title=" single tooth winding"> single tooth winding</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20power" title=" wind power"> wind power</a> </p> <a href="https://publications.waset.org/abstracts/152197/direct-drive-double-fed-wind-generator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/152197.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">190</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">160</span> The Environmental Impact of Sustainability Dispersion of Chlorine Releases in Coastal Zone of Alexandra: Spatial-Ecological Modeling</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20El%20Raey">Mohammed El Raey</a>, <a href="https://publications.waset.org/abstracts/search?q=Moustafa%20Osman%20Mohammed"> Moustafa Osman Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The spatial-ecological modeling is relating sustainable dispersions with social development. Sustainability with spatial-ecological model gives attention to urban environments in the design review management to comply with Earth’s System. Naturally exchange patterns of ecosystems have consistent and periodic cycles to preserve energy flows and materials in Earth’s System. The probabilistic risk assessment (PRA) technique is utilized to assess the safety of industrial complex. The other analytical approach is the Failure-Safe Mode and Effect Analysis (FMEA) for critical components. The plant safety parameters are identified for engineering topology as employed in assessment safety of industrial ecology. In particular, the most severe accidental release of hazardous gaseous is postulated, analyzed and assessment in industrial region. The IAEA- safety assessment procedure is used to account the duration and rate of discharge of liquid chlorine. The ecological model of plume dispersion width and concentration of chlorine gas in the downwind direction is determined using Gaussian Plume Model in urban and ruler areas and presented with SURFER®. The prediction of accident consequences is traced in risk contour concentration lines. The local greenhouse effect is predicted with relevant conclusions. The spatial-ecological model is also predicted the distribution schemes from the perspective of pollutants that considered multiple factors of multi-criteria analysis. The data extends input–output analysis to evaluate the spillover effect, and conducted Monte Carlo simulations and sensitivity analysis. Their unique structure is balanced within “equilibrium patterns”, such as the biosphere and collective a composite index of many distributed feedback flows. These dynamic structures are related to have their physical and chemical properties and enable a gradual and prolonged incremental pattern. While this spatial model structure argues from ecology, resource savings, static load design, financial and other pragmatic reasons, the outcomes are not decisive in artistic/ architectural perspective. The hypothesis is an attempt to unify analytic and analogical spatial structure for development urban environments using optimization software and applied as an example of integrated industrial structure where the process is based on engineering topology as optimization approach of systems ecology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=spatial-ecological%20modeling" title="spatial-ecological modeling">spatial-ecological modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=spatial%20structure%20orientation%20impact" title=" spatial structure orientation impact"> spatial structure orientation impact</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20structure" title=" composite structure"> composite structure</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20ecology" title=" industrial ecology"> industrial ecology</a> </p> <a href="https://publications.waset.org/abstracts/167398/the-environmental-impact-of-sustainability-dispersion-of-chlorine-releases-in-coastal-zone-of-alexandra-spatial-ecological-modeling" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167398.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">80</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">159</span> Conceptual Design of a Telecommunications Equipment Container for Humanitarian Logistics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Parisi">S. Parisi</a>, <a href="https://publications.waset.org/abstracts/search?q=Ch.%20Achillas"> Ch. Achillas</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Aidonis"> D. Aidonis</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Folinas"> D. Folinas</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Moussiopoulos"> N. Moussiopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Preparedness addresses the strategy in disaster management that allows the implementation of successful operational response immediately after a disaster. With speed as the main driver, product design for humanitarian aid purposes is a key factor of success in situations of high uncertainty and urgency. Within this context, a telecommunications container (TC) has been designed that belongs to a group of containers that serve the purpose of immediate response to global disasters. The TC includes all the necessary equipment to establish a telecommunication center in the destroyed area within the first 72 hours of humanitarian operations. The design focuses on defining the topology of the various parts of equipment by taking into consideration factors of serviceability, functionality, human-product interaction, universal design language, energy consumption, sustainability and the interrelationship with the other containers. The concept parametric design has been implemented with SolidWorks® CAD system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=telecommunications%20container" title="telecommunications container">telecommunications container</a>, <a href="https://publications.waset.org/abstracts/search?q=design" title=" design"> design</a>, <a href="https://publications.waset.org/abstracts/search?q=case%20study" title=" case study"> case study</a>, <a href="https://publications.waset.org/abstracts/search?q=humanitarian%20logistics" title=" humanitarian logistics"> humanitarian logistics</a> </p> <a href="https://publications.waset.org/abstracts/14677/conceptual-design-of-a-telecommunications-equipment-container-for-humanitarian-logistics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14677.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">458</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">158</span> Bridgeless Boost Power Factor Correction Rectifier with Hold-Up Time Extension Circuit</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Chih-Chiang%20Hua">Chih-Chiang Hua</a>, <a href="https://publications.waset.org/abstracts/search?q=Yi-Hsiung%20Fang"> Yi-Hsiung Fang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuan-Jhen%20Siao"> Yuan-Jhen Siao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A bridgeless boost (BLB) power factor correction (PFC) rectifier with hold-up time extension circuit is proposed in this paper. A full bridge rectifier is widely used in the front end of the ac/dc converter. Since the shortcomings of the full bridge rectifier, the bridgeless rectifier is developed. A BLB rectifier topology is utilized with the hold-up time extension circuit. Unlike the traditional hold-up time extension circuit, the proposed extension scheme uses fewer active switches to achieve a longer hold-up time. Simulation results are presented to verify the converter performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bridgeless%20boost%20%28BLB%29" title="bridgeless boost (BLB)">bridgeless boost (BLB)</a>, <a href="https://publications.waset.org/abstracts/search?q=boost%20converter" title=" boost converter"> boost converter</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20factor%20correction%20%28PFC%29" title=" power factor correction (PFC)"> power factor correction (PFC)</a>, <a href="https://publications.waset.org/abstracts/search?q=hold-up%20time" title=" hold-up time"> hold-up time</a> </p> <a href="https://publications.waset.org/abstracts/56840/bridgeless-boost-power-factor-correction-rectifier-with-hold-up-time-extension-circuit" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56840.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">157</span> Design and Implementation of 2D Mesh Network on Chip Using VHDL</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Boudjedra%20Abderrahim">Boudjedra Abderrahim</a>, <a href="https://publications.waset.org/abstracts/search?q=Toumi%20Salah"> Toumi Salah</a>, <a href="https://publications.waset.org/abstracts/search?q=Boutalbi%20Mostefa"> Boutalbi Mostefa</a>, <a href="https://publications.waset.org/abstracts/search?q=Frihi%20Mohammed"> Frihi Mohammed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, using the advancement of technology in semiconductor device fabrication, many transistors can be integrated to a single chip (VLSI). Although the growth chip density potentially eases systems-on-chip (SoCs) integrating thousands of processing element (PE) such as memory, processor, interfaces cores, system complexity, high-performance interconnect and scalable on-chip communication architecture become most challenges for many digital and embedded system designers. Networks-on-chip (NoCs) becomes a new paradigm that makes possible integrating heterogeneous devices and allows many communication constraints and performances. In this paper, we are interested for good performance and low area for implementation and a behavioral modeling of network on chip mesh topology design using VHDL hardware description language with performance evaluation and FPGA implementation results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=design" title="design">design</a>, <a href="https://publications.waset.org/abstracts/search?q=implementation" title=" implementation"> implementation</a>, <a href="https://publications.waset.org/abstracts/search?q=communication%20system" title=" communication system"> communication system</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20on%20chip" title=" network on chip"> network on chip</a>, <a href="https://publications.waset.org/abstracts/search?q=VHDL" title=" VHDL"> VHDL</a> </p> <a href="https://publications.waset.org/abstracts/3993/design-and-implementation-of-2d-mesh-network-on-chip-using-vhdl" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3993.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">156</span> Behavioral and EEG Reactions in Native Turkic-Speaking Inhabitants of Siberia and Siberian Russians during Recognition of Syntactic Errors in Sentences in Native and Foreign Languages</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tatiana%20N.%20Astakhova">Tatiana N. Astakhova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20%20E.%20Saprygin"> Alexander E. Saprygin</a>, <a href="https://publications.waset.org/abstracts/search?q=Tatyana%20A.%20Golovko"> Tatyana A. Golovko</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20N.%20Savostyanov"> Alexander N. Savostyanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Mikhail%20S.%20Vlasov"> Mikhail S. Vlasov</a>, <a href="https://publications.waset.org/abstracts/search?q=Natalia%20V.%20Borisova"> Natalia V. Borisova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandera%20G.%20Karpova"> Alexandera G. Karpova</a>, <a href="https://publications.waset.org/abstracts/search?q=Urana%20N.%20Kavai-ool"> Urana N. Kavai-ool</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20D.%20Mokur-ool"> Elena D. Mokur-ool</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolay%20A.%20Kolchanov"> Nikolay A. Kolchanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Lubomir%20I.%20Aftanas"> Lubomir I. Aftanas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the study is to compare behaviorally and EEG reactions in Turkic-speaking inhabitants of Siberia (Tuvinians and Yakuts) and Russians during the recognition of syntax errors in native and foreign languages. 63 healthy aboriginals of the Tyva Republic, 29 inhabitants of the Sakha (Yakutia) Republic, and 55 Russians from Novosibirsk participated in the study. All participants completed a linguistic task, in which they had to find a syntax error in the written sentences. Russian participants completed the task in Russian and in English. Tuvinian and Yakut participants completed the task in Russian, English, and Tuvinian or Yakut, respectively. EEG’s were recorded during the solving of tasks. For Russian participants, EEG's were recorded using 128-channels. The electrodes were placed according to the extended International 10-10 system, and the signals were amplified using ‘Neuroscan (USA)’ amplifiers. For Tuvinians and Yakuts EEG's were recorded using 64-channels and amplifiers Brain Products, Germany. In all groups 0.3-100 Hz analog filtering, sampling rate 1000 Hz were used. Response speed and the accuracy of recognition error were used as parameters of behavioral reactions. Event-related potentials (ERP) responses P300 and P600 were used as indicators of brain activity. The accuracy of solving tasks and response speed in Russians were higher for Russian than for English. The P300 amplitudes in Russians were higher for English; the P600 amplitudes in the left temporal cortex were higher for the Russian language. Both Tuvinians and Yakuts have no difference in accuracy of solving tasks in Russian and in their respective national languages (Tuvinian and Yakut). However, the response speed was faster for tasks in Russian than for tasks in their national language. Tuvinians and Yakuts showed bad accuracy in English, but the response speed was higher for English than for Russian and the national languages. With Tuvinians, there were no differences in the P300 and P600 amplitudes and in cortical topology for Russian and Tuvinian, but there was a difference for English. In Yakuts, the P300 and P600 amplitudes and topology of ERP for Russian were the same as Russians had for Russian. In Yakuts, brain reactions during Yakut and English comprehension had no difference and were reflected foreign language comprehension -while the Russian language comprehension was reflected native language comprehension. We found out that the Tuvinians recognized both Russian and Tuvinian as native languages, and English as a foreign language. The Yakuts recognized both English and Yakut as a foreign language, only Russian as a native language. According to the inquirer, both Tuvinians and Yakuts use the national language as a spoken language, whereas they don’t use it for writing. It can well be a reason that Yakuts perceive the Yakut writing language as a foreign language while writing Russian as their native. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EEG" title="EEG">EEG</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20comprehension" title=" language comprehension"> language comprehension</a>, <a href="https://publications.waset.org/abstracts/search?q=native%20and%20foreign%20languages" title=" native and foreign languages"> native and foreign languages</a>, <a href="https://publications.waset.org/abstracts/search?q=Siberian%20inhabitants" title=" Siberian inhabitants"> Siberian inhabitants</a> </p> <a href="https://publications.waset.org/abstracts/34256/behavioral-and-eeg-reactions-in-native-turkic-speaking-inhabitants-of-siberia-and-siberian-russians-during-recognition-of-syntactic-errors-in-sentences-in-native-and-foreign-languages" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34256.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">532</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">155</span> Rule Insertion Technique for Dynamic Cell Structure Neural Network </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Osama%20Elsarrar">Osama Elsarrar</a>, <a href="https://publications.waset.org/abstracts/search?q=Marjorie%20Darrah"> Marjorie Darrah</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Devin"> Richard Devin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper discusses the idea of capturing an expert’s knowledge in the form of human understandable rules and then inserting these rules into a dynamic cell structure (DCS) neural network. The DCS is a form of self-organizing map that can be used for many purposes, including classification and prediction. This particular neural network is considered to be a topology preserving network that starts with no pre-structure, but assumes a structure once trained. The DCS has been used in mission and safety-critical applications, including adaptive flight control and health-monitoring in aerial vehicles. The approach is to insert expert knowledge into the DCS before training. Rules are translated into a pre-structure and then training data are presented. This idea has been demonstrated using the well-known Iris data set and it has been shown that inserting the pre-structure results in better accuracy with the same training. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=neural%20network" title="neural network">neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=self-organizing%20map" title=" self-organizing map"> self-organizing map</a>, <a href="https://publications.waset.org/abstracts/search?q=rule%20extraction" title=" rule extraction"> rule extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=rule%20insertion" title=" rule insertion"> rule insertion</a> </p> <a href="https://publications.waset.org/abstracts/116302/rule-insertion-technique-for-dynamic-cell-structure-neural-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116302.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">172</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">154</span> Internet of Things: Route Search Optimization Applying Ant Colony Algorithm and Theory of Computer Science</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tushar%20Bhardwaj">Tushar Bhardwaj</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Internet of Things (IoT) possesses a dynamic network where the network nodes (mobile devices) are added and removed constantly and randomly, hence the traffic distribution in the network is quite variable and irregular. The basic but very important part in any network is route searching. We have many conventional route searching algorithms like link-state, and distance vector algorithms but they are restricted to the static point to point network topology. In this paper we propose a model that uses the Ant Colony Algorithm for route searching. It is dynamic in nature and has positive feedback mechanism that conforms to the route searching. We have also embedded the concept of Non-Deterministic Finite Automata [NDFA] minimization to reduce the network to increase the performance. Results show that Ant Colony Algorithm gives the shortest path from the source to destination node and NDFA minimization reduces the broadcasting storm effectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=routing" title="routing">routing</a>, <a href="https://publications.waset.org/abstracts/search?q=ant%20colony%20algorithm" title=" ant colony algorithm"> ant colony algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=NDFA" title=" NDFA"> NDFA</a>, <a href="https://publications.waset.org/abstracts/search?q=IoT" title=" IoT"> IoT</a> </p> <a href="https://publications.waset.org/abstracts/1965/internet-of-things-route-search-optimization-applying-ant-colony-algorithm-and-theory-of-computer-science" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/1965.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">444</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">153</span> Solving Directional Overcurrent Relay Coordination Problem Using Artificial Bees Colony</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20H.%20Hussain">M. H. Hussain</a>, <a href="https://publications.waset.org/abstracts/search?q=I.%20Musirin"> I. Musirin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20F.%20Abidin"> A. F. Abidin</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20R.%20A.%20Rahim"> S. R. A. Rahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the implementation of Artificial Bees Colony (ABC) algorithm in solving Directional OverCurrent Relays (DOCRs) coordination problem for near-end faults occurring in fixed network topology. The coordination optimization of DOCRs is formulated as linear programming (LP) problem. The objective function is introduced to minimize the operating time of the associated relay which depends on the time multiplier setting. The proposed technique is to taken as a technique for comparison purpose in order to highlight its superiority. The proposed algorithms have been tested successfully on 8 bus test system. The simulation results demonstrated that the ABC algorithm which has been proved to have good search ability is capable in dealing with constraint optimization problems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20bees%20colony" title="artificial bees colony">artificial bees colony</a>, <a href="https://publications.waset.org/abstracts/search?q=directional%20overcurrent%20relay%20coordination%20problem" title=" directional overcurrent relay coordination problem"> directional overcurrent relay coordination problem</a>, <a href="https://publications.waset.org/abstracts/search?q=relay%20settings" title=" relay settings"> relay settings</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20multiplier%20setting" title=" time multiplier setting"> time multiplier setting</a> </p> <a href="https://publications.waset.org/abstracts/9892/solving-directional-overcurrent-relay-coordination-problem-using-artificial-bees-colony" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/9892.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">330</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">152</span> Quantum Computing with Qudits on a Graph</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aleksey%20Fedorov">Aleksey Fedorov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Building a scalable platform for quantum computing remains one of the most challenging tasks in quantum science and technologies. However, the implementation of most important quantum operations with qubits (quantum analogues of classical bits), such as multiqubit Toffoli gate, requires either a polynomial number of operation or a linear number of operations with the use of ancilla qubits. Therefore, the reduction of the number of operations in the presence of scalability is a crucial goal in quantum information processing. One of the most elegant ideas in this direction is to use qudits (multilevel systems) instead of qubits and rely on additional levels of qudits instead of ancillas. Although some of the already obtained results demonstrate a reduction of the number of operation, they suffer from high complexity and/or of the absence of scalability. We show a strong reduction of the number of operations for the realization of the Toffoli gate by using qudits for a scalable multi-qudit processor. This is done on the basis of a general relation between the dimensionality of qudits and their topology of connections, that we derived. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantum%20computing" title="quantum computing">quantum computing</a>, <a href="https://publications.waset.org/abstracts/search?q=qudits" title=" qudits"> qudits</a>, <a href="https://publications.waset.org/abstracts/search?q=Toffoli%20gates" title=" Toffoli gates"> Toffoli gates</a>, <a href="https://publications.waset.org/abstracts/search?q=gate%20decomposition" title=" gate decomposition"> gate decomposition</a> </p> <a href="https://publications.waset.org/abstracts/126171/quantum-computing-with-qudits-on-a-graph" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/126171.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">147</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">151</span> Experimental Demonstration of Broadband Erbium-Doped Fiber Amplifier</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Belloui%20Bouzid">Belloui Bouzid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, broadband design of erbium doped fiber amplifier (EDFA) is demonstrated and proved experimentally. High and broad gain is covered in C and L bands. The used technique combines, in one configuration, two double passes with split band structure for the amplification of two traveled signals one for the C band and the other for L band. This new topology is to investigate the trends of high gain and wide amplification at different status of pumping power, input wavelength, and input signal power. The presented paper is to explore the performance of EDFA gain using what it can be called double pass double branch wide band amplification configuration. The obtained results show high gain and wide broadening range of 44.24 dB and 80 nm amplification respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=erbium%20doped%20fiber%20amplifier" title="erbium doped fiber amplifier">erbium doped fiber amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=erbium%20doped%20fiber%20laser" title=" erbium doped fiber laser"> erbium doped fiber laser</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20amplification" title=" optical amplification"> optical amplification</a>, <a href="https://publications.waset.org/abstracts/search?q=fiber%20laser" title=" fiber laser"> fiber laser</a> </p> <a href="https://publications.waset.org/abstracts/80047/experimental-demonstration-of-broadband-erbium-doped-fiber-amplifier" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80047.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">254</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">150</span> PDDA: Priority-Based, Dynamic Data Aggregation Approach for Sensor-Based Big Data Framework</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lutful%20Karim">Lutful Karim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohammed%20S.%20Al-kahtani"> Mohammed S. Al-kahtani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sensors are being used in various applications such as agriculture, health monitoring, air and water pollution monitoring, traffic monitoring and control and hence, play the vital role in the growth of big data. However, sensors collect redundant data. Thus, aggregating and filtering sensors data are significantly important to design an efficient big data framework. Current researches do not focus on aggregating and filtering data at multiple layers of sensor-based big data framework. Thus, this paper introduces (i) three layers data aggregation and framework for big data and (ii) a priority-based, dynamic data aggregation scheme (PDDA) for the lowest layer at sensors. Simulation results show that the PDDA outperforms existing tree and cluster-based data aggregation scheme in terms of overall network energy consumptions and end-to-end data transmission delay. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=big%20data" title="big data">big data</a>, <a href="https://publications.waset.org/abstracts/search?q=clustering" title=" clustering"> clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=tree%20topology" title=" tree topology"> tree topology</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20aggregation" title=" data aggregation"> data aggregation</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor%20networks" title=" sensor networks"> sensor networks</a> </p> <a href="https://publications.waset.org/abstracts/47419/pdda-priority-based-dynamic-data-aggregation-approach-for-sensor-based-big-data-framework" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47419.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">346</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">149</span> Energy Balance Routing to Enhance Network Performance in Wireless Sensor Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Baraneedaran">G. Baraneedaran</a>, <a href="https://publications.waset.org/abstracts/search?q=Deepak%20Singh"> Deepak Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Kollipara%20Tejesh"> Kollipara Tejesh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The wireless sensors network has been an active research area over the y-ear passed. Due to the limited energy and communication ability of sensor nodes, it seems especially important to design a routing protocol for WSNs so that sensing data can be transmitted to the receiver effectively, an energy-balanced routing method based on forward-aware factor (FAF-EBRM) is proposed in this paper. In FAF-EBRM, the next-hop node is selected according to the awareness of link weight and forward energy density. A spontaneous reconstruction mechanism for Local topology is designed additionally. In this experiment, FAF-EBRM is compared with LEACH and EECU, experimental results show that FAF-EBRM outperforms LEACH and EECU, which balances the energy consumption, prolongs the function lifetime and guarantees high Qos of WSN. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=energy%20balance" title="energy balance">energy balance</a>, <a href="https://publications.waset.org/abstracts/search?q=forward-aware%20factor%20%28FAF%29" title=" forward-aware factor (FAF)"> forward-aware factor (FAF)</a>, <a href="https://publications.waset.org/abstracts/search?q=forward%20energy%20density" title=" forward energy density"> forward energy density</a>, <a href="https://publications.waset.org/abstracts/search?q=link%20weight" title=" link weight"> link weight</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20performance" title=" network performance "> network performance </a> </p> <a href="https://publications.waset.org/abstracts/30161/energy-balance-routing-to-enhance-network-performance-in-wireless-sensor-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30161.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">540</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">148</span> A Taxonomy of Routing Protocols 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=A.%20Kardi">A. Kardi</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Zagrouba"> R. Zagrouba</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Alqahtani"> M. Alqahtani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Internet of Everything (IoE) presents today a very attractive and motivating field of research. It is basically based on Wireless Sensor Networks (WSNs) in which the routing task is the major analysis topic. In fact, it directly affects the effectiveness and the lifetime of the network. This paper, developed from recent works and based on extensive researches, proposes a taxonomy of routing protocols in WSNs. Our main contribution is that we propose a classification model based on nine classes namely application type, delivery mode, initiator of communication, network architecture, path establishment (route discovery), network topology (structure), protocol operation, next hop selection and latency-awareness and energy-efficient routing protocols. In order to provide a total classification pattern to serve as reference for network designers, each class is subdivided into possible subclasses, presented, and discussed using different parameters such as purposes and characteristics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=routing" title="routing">routing</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor" title=" sensor"> sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=survey" title=" survey"> survey</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20sensor%20networks" title=" wireless sensor networks"> wireless sensor networks</a>, <a href="https://publications.waset.org/abstracts/search?q=WSNs" title=" WSNs"> WSNs</a> </p> <a href="https://publications.waset.org/abstracts/86073/a-taxonomy-of-routing-protocols-in-wireless-sensor-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86073.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">182</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">147</span> Event-Related Potentials and Behavioral Reactions during Native and Foreign Languages Comprehension in Bilingual Inhabitants of Siberia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tatiana%20N.%20Astakhova">Tatiana N. Astakhova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20%20E.%20Saprygin"> Alexander E. Saprygin</a>, <a href="https://publications.waset.org/abstracts/search?q=Tatyana%20A.%20Golovko"> Tatyana A. Golovko</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20N.%20Savostyanov"> Alexander N. Savostyanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Mikhail%20S.%20Vlasov"> Mikhail S. Vlasov</a>, <a href="https://publications.waset.org/abstracts/search?q=Natalia%20V.%20Borisova"> Natalia V. Borisova</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandera%20G.%20Karpova"> Alexandera G. Karpova</a>, <a href="https://publications.waset.org/abstracts/search?q=Urana%20N.%20Kavai-ool"> Urana N. Kavai-ool</a>, <a href="https://publications.waset.org/abstracts/search?q=Elena%20D.%20Mokur-ool"> Elena D. Mokur-ool</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolay%20A.%20Kolchanov"> Nikolay A. Kolchanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Lubomir%20I.%20Aftanas"> Lubomir I. Aftanas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The study is dedicated to the research of brain activity in bilingual inhabitants of Siberia. We compared behavioral reactions and event-related potentials in Turkic-speaking inhabitants of Siberia (Tuvinians and Yakuts) and Russians. 63 healthy aboriginals of the Tyva Republic, 29 inhabitants of the Sakha (Yakutia) Republic, and 55 Russians from Novosibirsk participated in the study. All the healthy and right-handed participants, matched on age and sex, were students of different universities. EEG’s were recorded during the solving of linguistic tasks. In these tasks, participants had to find a syntax error in the written sentences. There were four groups of sentences: Russian, English, Tuvinian, and Yakut. All participants completed the tasks in Russian and English. Additionally, Tuvinians and Yakuts completed the tasks in Tuvinian or Yakut respectively. For Russians, EEG's were recorded using 128-channels according to the extended International 10-10 system, and the signals were amplified using “Neuroscan (USA)” amplifiers. For Tuvinians and Yakuts, EEG's were recorded using 64-channels and amplifiers Brain Products, Germany. In all groups, 0.3-100 Hz analog filtering and sampling rate 1000 Hz were used. As parameters of behavioral reactions, response speed and the accuracy of recognition were used. Event-related potentials (ERP) responses P300 and P600 were used as indicators of brain activity. The behavioral reactions showed that in Russians, the response speed for Russian was faster than for English. Also, the accuracy of solving tasks was higher for Russian than for English. The peak P300 in Russians were higher for English, the peak P600 in the left temporal cortex were higher for the Russian language. Both Tuvinians and Yakuts have no difference in accuracy of solving tasks in Russian and in their respective national languages. However, the response speed was faster for tasks in Russian than for tasks in their national language. Tuvinians and Yakuts showed bad accuracy in English, but the response speed was higher for English than for Russian and the national languages. This can be explained by the fact that they did not think carefully and gave a random answer for English. In Tuvinians, The P300 and P600 amplitudes and cortical topology were the same for Russian and Tuvinian and different for English. In Yakuts, the P300 and P600 amplitudes and topology of ERP for Russian were the same as what Russians had for Russian. In Yakuts, brain reactions during Yakut and English comprehension had no difference, and were reflected to foreign language comprehension - while the Russian language comprehension was reflected to native language comprehension. We found out that the Tuvinians recognized both Russian and Tuvinian as native languages, and English as a foreign language. The Yakuts recognized both English and Yakut as a foreign language, and only Russian as a native language. According to the inquirer, both Tuvinians and Yakuts use the national language as a spoken language, whereas they don’t use it for writing. It can well be a reason that Yakuts perceive the Yakut writing language as a foreign language while writing Russian as their native. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=EEG" title="EEG">EEG</a>, <a href="https://publications.waset.org/abstracts/search?q=ERP" title=" ERP"> ERP</a>, <a href="https://publications.waset.org/abstracts/search?q=native%20and%20foreign%20languages%20comprehension" title=" native and foreign languages comprehension"> native and foreign languages comprehension</a>, <a href="https://publications.waset.org/abstracts/search?q=Siberian%20inhabitants" title=" Siberian inhabitants"> Siberian inhabitants</a> </p> <a href="https://publications.waset.org/abstracts/34667/event-related-potentials-and-behavioral-reactions-during-native-and-foreign-languages-comprehension-in-bilingual-inhabitants-of-siberia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34667.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">561</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">146</span> Impact of Node Density and Transmission Range on the Performance of OLSR and DSDV Routing Protocols in VANET City Scenarios</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yassine%20Meraihi">Yassine Meraihi</a>, <a href="https://publications.waset.org/abstracts/search?q=Dalila%20Acheli"> Dalila Acheli</a>, <a href="https://publications.waset.org/abstracts/search?q=Rabah%20Meraihi"> Rabah Meraihi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Vehicular Ad hoc Network (VANET) is a special case of Mobile Ad hoc Network (MANET) used to establish communications and exchange information among nearby vehicles and between vehicles and nearby fixed infrastructure. VANET is seen as a promising technology used to provide safety, efficiency, assistance and comfort to the road users. Routing is an important issue in Vehicular Ad Hoc Network to find and maintain communication between vehicles due to the highly dynamic topology, frequently disconnected network and mobility constraints. This paper evaluates the performance of two most popular proactive routing protocols OLSR and DSDV in real city traffic scenario on the basis of three metrics namely Packet delivery ratio, throughput and average end to end delay by varying vehicles density and transmission range. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=DSDV" title="DSDV">DSDV</a>, <a href="https://publications.waset.org/abstracts/search?q=OLSR" title=" OLSR"> OLSR</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20of%20service" title=" quality of service"> quality of service</a>, <a href="https://publications.waset.org/abstracts/search?q=routing%20protocols" title=" routing protocols"> routing protocols</a>, <a href="https://publications.waset.org/abstracts/search?q=VANET" title=" VANET"> VANET</a> </p> <a href="https://publications.waset.org/abstracts/11262/impact-of-node-density-and-transmission-range-on-the-performance-of-olsr-and-dsdv-routing-protocols-in-vanet-city-scenarios" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11262.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">145</span> Jordan Curves in the Digital Plane with Respect to the Connectednesses given by Certain Adjacency Graphs</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Josef%20Slapal">Josef Slapal</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Digital images are approximations of real ones and, therefore, to be able to study them, we need the digital plane Z2 to be equipped with a convenient structure that behaves analogously to the Euclidean topology on the real plane. In particular, it is required that such a structure allows for a digital analogue of the Jordan curve theorem. We introduce certain adjacency graphs on the digital plane and prove digital Jordan curves for them thus showing that the graphs provide convenient structures on Z2 for the study and processing of digital images. Further convenient structures including the wellknown Khalimsky and Marcus-Wyse adjacency graphs may be obtained as quotients of the graphs introduced. Since digital Jordan curves represent borders of objects in digital images, the adjacency graphs discussed may be used as background structures on the digital plane for solving the problems of digital image processing that are closely related to borders like border detection, contour filling, pattern recognition, thinning, etc. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20plane" title="digital plane">digital plane</a>, <a href="https://publications.waset.org/abstracts/search?q=adjacency%20graph" title=" adjacency graph"> adjacency graph</a>, <a href="https://publications.waset.org/abstracts/search?q=Jordan%20curve" title=" Jordan curve"> Jordan curve</a>, <a href="https://publications.waset.org/abstracts/search?q=quotient%20adjacency" title=" quotient adjacency"> quotient adjacency</a> </p> <a href="https://publications.waset.org/abstracts/65454/jordan-curves-in-the-digital-plane-with-respect-to-the-connectednesses-given-by-certain-adjacency-graphs" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65454.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">379</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">144</span> A Continuous Switching Technique for a Single Phase Bridgeless and Transformer-Less Active Rectifier with High Power Factor and Voltage Stabilization</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rahul%20Ganpat%20Mapari">Rahul Ganpat Mapari</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20G.%20Wakde"> D. G. Wakde</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a proposed approach to improve the power factor of single-phase rectifiers and to regulate the output voltage against the change in grid voltage and load is presented. This converter topology is evaluated on the basis of performance and its salient features like simplicity, low cost and high performance are discussed to analyze its applicability. The proposed control strategy is bridgeless, transformer-less and output current sensor-less and consists of only two Bi-directional IGBTs and two diodes. The voltage regulation is achieved by a simple voltage divider to communicate to a controller to control the duty cycles of PWM. A control technique and operational procedure are also developed, both theoretically and experimentally. The experimental results clearly verify the theoretical analysis from the prototype connected to grid unity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Active%20Rectifier%20%28AC-DC%29" title="Active Rectifier (AC-DC)">Active Rectifier (AC-DC)</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20factor" title=" power factor"> power factor</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20phase" title=" single phase"> single phase</a>, <a href="https://publications.waset.org/abstracts/search?q=voltage%20regulation" title=" voltage regulation"> voltage regulation</a> </p> <a href="https://publications.waset.org/abstracts/3045/a-continuous-switching-technique-for-a-single-phase-bridgeless-and-transformer-less-active-rectifier-with-high-power-factor-and-voltage-stabilization" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/3045.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">580</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">143</span> Modeling of Global Solar Radiation on a Horizontal Surface Using Artificial Neural Network: A Case Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Laidi%20Maamar">Laidi Maamar</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanini%20Salah"> Hanini Salah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present work investigates the potential of artificial neural network (ANN) model to predict the horizontal global solar radiation (HGSR). The ANN is developed and optimized using three years meteorological database from 2011 to 2013 available at the meteorological station of Blida (Blida 1 university, Algeria, Latitude 36.5°, Longitude 2.81° and 163 m above mean sea level). Optimal configuration of the ANN model has been determined by minimizing the Root Means Square Error (RMSE) and maximizing the correlation coefficient (R2) between observed and predicted data with the ANN model. To select the best ANN architecture, we have conducted several tests by using different combinations of parameters. A two-layer ANN model with six hidden neurons has been found as an optimal topology with (RMSE=4.036 W/m²) and (R²=0.999). A graphical user interface (GUI), was designed based on the best network structure and training algorithm, to enhance the users’ friendliness application of the model. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20network" title="artificial neural network">artificial neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=global%20solar%20radiation" title=" global solar radiation"> global solar radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20energy" title=" solar energy"> solar energy</a>, <a href="https://publications.waset.org/abstracts/search?q=prediction" title=" prediction"> prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=Algeria" title=" Algeria"> Algeria</a> </p> <a href="https://publications.waset.org/abstracts/34947/modeling-of-global-solar-radiation-on-a-horizontal-surface-using-artificial-neural-network-a-case-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34947.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">499</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">142</span> Transfer of Electrical Energy by Magnetic Induction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Carlos%20Oliveira%20Santiago%20Filho">Carlos Oliveira Santiago Filho</a>, <a href="https://publications.waset.org/abstracts/search?q=Ciro%20Egoavil"> Ciro Egoavil</a>, <a href="https://publications.waset.org/abstracts/search?q=Eduardo%20Oliveira"> Eduardo Oliveira</a>, <a href="https://publications.waset.org/abstracts/search?q=J%C3%A9ferson%20Galdino"> Jéferson Galdino</a>, <a href="https://publications.waset.org/abstracts/search?q=Moises%20Galileu"> Moises Galileu</a>, <a href="https://publications.waset.org/abstracts/search?q=Tiago%20Oliveira%20Correa"> Tiago Oliveira Correa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transfer of Electrical Energy through resonant inductive magnetic coupling is demonstrated experimentally in a system containing coil primary for transmission and secondary reception. The topology used in the prototype of the Class-E amplifier, has been identified as optimal for power transfer applications. Characteristic of the inductor and the load are defined by the requirements of the resonant inductive system. The frequency limitation the of circuit restricts unloaded “Q-Factor”, quality factor of the coils and thus the link efﬁciency. With a suitable circuit, copper coil unloaded Q-Factors of over 1,000 can be achieved in the low Mhz region, enabling a cost-effective high Q coil assembly. The circuit is capable system capable of transmitting energy with direct current to load efﬁciency above 60% at 2 Mhz. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20induction" title="magnetic induction">magnetic induction</a>, <a href="https://publications.waset.org/abstracts/search?q=transfer%20of%20electrical%20energy" title=" transfer of electrical energy"> transfer of electrical energy</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20coupling" title=" magnetic coupling"> magnetic coupling</a>, <a href="https://publications.waset.org/abstracts/search?q=Q-Factor" title=" Q-Factor"> Q-Factor</a> </p> <a href="https://publications.waset.org/abstracts/20457/transfer-of-electrical-energy-by-magnetic-induction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20457.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">518</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">141</span> Control Methods Used to Minimize Losses in High-Speed Electrical Machines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Hedar">Mohammad Hedar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents selected topics from the area of high-speed electrical machine control with a focus on loss minimization. It focuses on pulse amplitude modulation (PAM) set-up in order to minimize the inrush current peak. An overview of these machines and the control topologies that have been used with these machines are reported. The critical problem that happens when controlling a high-speed electrical motor is the high current peak in the start-up process, which will cause high power-losses. The main goal of this paper is to clarify how the inrush current peak can be minimized in the start-up process. PAM control method is proposed to use in the frequency inverter, simulation results for PAM & PWM control method, and steps to improve the PAM control are reported. The simulations were performed with data for PMSM (nominal speed: 25 000 min-1, power: 3.1 kW, load: 1.2 Nm). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=control%20topology" title="control topology">control topology</a>, <a href="https://publications.waset.org/abstracts/search?q=frequency%20inverter" title=" frequency inverter"> frequency inverter</a>, <a href="https://publications.waset.org/abstracts/search?q=high-speed%20electrical%20machines" title=" high-speed electrical machines"> high-speed electrical machines</a>, <a href="https://publications.waset.org/abstracts/search?q=PAM" title=" PAM"> PAM</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20losses" title=" power losses"> power losses</a>, <a href="https://publications.waset.org/abstracts/search?q=PWM" title=" PWM"> PWM</a> </p> <a href="https://publications.waset.org/abstracts/131889/control-methods-used-to-minimize-losses-in-high-speed-electrical-machines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131889.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">120</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">140</span> The Geometry of Natural Formation: an Application of Geometrical Analysis for Complex Natural Order of Pomegranate </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anahita%20Aris">Anahita Aris</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Geometry always plays a key role in natural structures, which can be a source of inspiration for architects and urban designers to create spaces. By understanding formative principles in nature, a variety of options can be provided that lead to freedom of formation. The main purpose of this paper is to analyze the geometrical order found in pomegranate to find formative principles explaining its complex structure. The point is how spherical arils of pomegranate pressed together inside the fruit and filled the space as they expand in the growing process, which made a self-organized system leads to the formation of each of the arils are unique in size, topology and shape. The main challenge of this paper would be using advanced architectural modeling techniques to discover these principles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=advanced%20modeling%20techniques" title="advanced modeling techniques">advanced modeling techniques</a>, <a href="https://publications.waset.org/abstracts/search?q=architectural%20modeling" title=" architectural modeling"> architectural modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20design" title=" computational design"> computational design</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20geometry%20of%20natural%20formation" title=" the geometry of natural formation"> the geometry of natural formation</a>, <a href="https://publications.waset.org/abstracts/search?q=geometrical%20analysis" title=" geometrical analysis"> geometrical analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20natural%20order%20of%20pomegranate" title=" the natural order of pomegranate"> the natural order of pomegranate</a>, <a href="https://publications.waset.org/abstracts/search?q=voronoi%20diagrams" title=" voronoi diagrams"> voronoi diagrams</a> </p> <a href="https://publications.waset.org/abstracts/138493/the-geometry-of-natural-formation-an-application-of-geometrical-analysis-for-complex-natural-order-of-pomegranate" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138493.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">220</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">139</span> 3D-Mesh Robust Watermarking Technique for Ownership Protection and Authentication</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farhan%20A.%20Alenizi">Farhan A. Alenizi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Digital watermarking has evolved in the past years as an important means for data authentication and ownership protection. The images and video watermarking was well known in the field of multimedia processing; however, 3D objects' watermarking techniques have emerged as an important means for the same purposes, as 3D mesh models are in increasing use in different areas of scientific, industrial, and medical applications. Like the image watermarking techniques, 3D watermarking can take place in either space or transform domains. Unlike images and video watermarking, where the frames have regular structures in both space and temporal domains, 3D objects are represented in different ways as meshes that are basically irregular samplings of surfaces; moreover, meshes can undergo a large variety of alterations which may be hard to tackle. This makes the watermarking process more challenging. While the transform domain watermarking is preferable in images and videos, they are still difficult to implement in 3d meshes due to the huge number of vertices involved and the complicated topology and geometry, and hence the difficulty to perform the spectral decomposition, even though significant work was done in the field. Spatial domain watermarking has attracted significant attention in the past years; they can either act on the topology or on the geometry of the model. Exploiting the statistical characteristics in the 3D mesh models from both geometrical and topological aspects was useful in hiding data. However, doing that with minimal surface distortions to the mesh attracted significant research in the field. A 3D mesh blind watermarking technique is proposed in this research. The watermarking method depends on modifying the vertices' positions with respect to the center of the object. An optimal method will be developed to reduce the errors, minimizing the distortions that the 3d object may experience due to the watermarking process, and reducing the computational complexity due to the iterations and other factors. The technique relies on the displacement process of the vertices' locations depending on the modification of the variances of the vertices’ norms. Statistical analyses were performed to establish the proper distributions that best fit each mesh, and hence establishing the bins sizes. Several optimizing approaches were introduced in the realms of mesh local roughness, the statistical distributions of the norms, and the displacements in the mesh centers. To evaluate the algorithm's robustness against other common geometry and connectivity attacks, the watermarked objects were subjected to uniform noise, Laplacian smoothing, vertices quantization, simplification, and cropping. Experimental results showed that the approach is robust in terms of both perceptual and quantitative qualities. It was also robust against both geometry and connectivity attacks. Moreover, the probability of true positive detection versus the probability of false-positive detection was evaluated. To validate the accuracy of the test cases, the receiver operating characteristics (ROC) curves were drawn, and they’ve shown robustness from this aspect. 3D watermarking is still a new field but still a promising one. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=watermarking" title="watermarking">watermarking</a>, <a href="https://publications.waset.org/abstracts/search?q=mesh%20objects" title=" mesh objects"> mesh objects</a>, <a href="https://publications.waset.org/abstracts/search?q=local%20roughness" title=" local roughness"> local roughness</a>, <a href="https://publications.waset.org/abstracts/search?q=Laplacian%20Smoothing" title=" Laplacian Smoothing"> Laplacian Smoothing</a> </p> <a href="https://publications.waset.org/abstracts/135460/3d-mesh-robust-watermarking-technique-for-ownership-protection-and-authentication" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/135460.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">160</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">138</span> An Algorithm for Determining the Arrival Behavior of a Secondary User to a Base Station in Cognitive Radio Networks </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Danilo%20L%C3%B3pez">Danilo López</a>, <a href="https://publications.waset.org/abstracts/search?q=Edwin%20Rivas"> Edwin Rivas</a>, <a href="https://publications.waset.org/abstracts/search?q=Leyla%20L%C3%B3pez"> Leyla López</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the development of an algorithm that predicts the arrival of a secondary user (SU) to a base station (BS) in a cognitive network based on infrastructure, requesting a Best Effort (BE) or Real Time (RT) type of service with a determined bandwidth (BW) implementing neural networks. The algorithm dynamically uses a neural network construction technique using the geometric pyramid topology and trains a Multilayer Perceptron Neural Networks (MLPNN) based on the historical arrival of an SU to estimate future applications. This will allow efficiently managing the information in the BS, since it precedes the arrival of the SUs in the stage of selection of the best channel in CRN. As a result, the software application determines the probability of arrival at a future time point and calculates the performance metrics to measure the effectiveness of the predictions made. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cognitive%20radio" title="cognitive radio">cognitive radio</a>, <a href="https://publications.waset.org/abstracts/search?q=base%20station" title=" base station"> base station</a>, <a href="https://publications.waset.org/abstracts/search?q=best%20effort" title=" best effort"> best effort</a>, <a href="https://publications.waset.org/abstracts/search?q=MLPNN" title=" MLPNN"> MLPNN</a>, <a href="https://publications.waset.org/abstracts/search?q=prediction" title=" prediction"> prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=real%20time" title=" real time"> real time</a> </p> <a href="https://publications.waset.org/abstracts/62227/an-algorithm-for-determining-the-arrival-behavior-of-a-secondary-user-to-a-base-station-in-cognitive-radio-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62227.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">331</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">137</span> Phylogenetic Relationships of the Malaysian Primates Cercopithecine Based on COI Gene Sequences</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=B.%20M.%20Md-Zain">B. M. Md-Zain</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20A.%20Rahman"> N. A. Rahman</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20B.%20Abdul-Latiff"> M. A. B. Abdul-Latiff</a>, <a href="https://publications.waset.org/abstracts/search?q=W.%20M.%20R.%20Idris"> W. M. R. Idris</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We conducted molecular research to portray phylogenetic relationships of Malaysian primates particularly in the genus of Macaca. We have sequenced cytochrome C oxidase subunit I (COI) of mitochondrial DNA of several individuals from M. fascicularis and M. arctoides. PCR amplifications were performed and COI DNA sequences were aligned using ClustalW. Phylogenetic trees were constructed using distance analyses by employing neighbor-joining algorithm (NJ). We managed to sequence 700 bp of COI DNA sequences. The tree topology showed that M. fascicularis did not clump based on phyleogeography division in Peninsular Malaysia. Individuals from Negeri Sembilan merged together with samples from Perak and Penang into one clade. In addition, phylogenetic analyses indicated that M. arctoides was classified into sinica group instead of fascicularis group supported by genetic distance data. COI gene is an effective locus to clarify phylogenetic position of M. arctoides but not in discriminating M. fascicularis population in Peninsular Malaysia. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cercopithecine" title="cercopithecine">cercopithecine</a>, <a href="https://publications.waset.org/abstracts/search?q=long-tailed%20macaque" title=" long-tailed macaque"> long-tailed macaque</a>, <a href="https://publications.waset.org/abstracts/search?q=Macaca%20fascicularis" title=" Macaca fascicularis"> Macaca fascicularis</a>, <a href="https://publications.waset.org/abstracts/search?q=Macaca%20arctoides" title=" Macaca arctoides"> Macaca arctoides</a> </p> <a href="https://publications.waset.org/abstracts/6415/phylogenetic-relationships-of-the-malaysian-primates-cercopithecine-based-on-coi-gene-sequences" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6415.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">136</span> Symmetry-Protected Dirac Semi-Metallic Phases in Transition Metal Dichalcogenides</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Saeed%20Bahramy">Mohammad Saeed Bahramy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transition metal dichalcogenides have experienced a resurgence of interest in the past few years owing to their rich properties, ranging from metals and superconductors to strongly spin-orbit-coupled semiconductors and charge-density-wave systems. In all these cases, the transition metal d-electrons mainly determine the ground state properties. This presentation focuses on the chalcogen-derived states. Combining density-functional theory calculations with spin- and angle-resolved photoemission, it is shown that these states generically host a coexistence of type I and type II three-dimensional bulk Dirac fermions as well as ladders of topological surface states and surface resonances. It will be discussed how these naturally arise within a single p-orbital manifold as a general consequence of a trigonal crystal field, and as such can be expected across many compounds. Our finding opens a new route to design topological materials with advanced functionalities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=topology" title="topology">topology</a>, <a href="https://publications.waset.org/abstracts/search?q=electronic%20structure" title=" electronic structure"> electronic structure</a>, <a href="https://publications.waset.org/abstracts/search?q=Dirac%20semimetals" title=" Dirac semimetals"> Dirac semimetals</a>, <a href="https://publications.waset.org/abstracts/search?q=transition%20metal%20dichalcogenides" title=" transition metal dichalcogenides"> transition metal dichalcogenides</a> </p> <a href="https://publications.waset.org/abstracts/94166/symmetry-protected-dirac-semi-metallic-phases-in-transition-metal-dichalcogenides" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/94166.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">166</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">135</span> A Study on Game Theory Approaches for Wireless Sensor Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Shoukath%20Ali">M. Shoukath Ali</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajendra%20Prasad%20Singh"> Rajendra Prasad Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Game Theory approaches and their application in improving the performance of Wireless Sensor Networks (WSNs) are discussed in this paper. The mathematical modeling and analysis of WSNs may have low success rate due to the complexity of topology, modeling, link quality, etc. However, Game Theory is a field, which can efficiently use to analyze the WSNs. Game Theory is related to applied mathematics that describes and analyzes interactive decision situations. Game theory has the ability to model independent, individual decision makers whose actions affect the surrounding decision makers. The outcome of complex interactions among rational entities can be predicted by a set of analytical tools. However, the rationality demands a stringent observance to a strategy based on measured of perceived results. Researchers are adopting game theory approaches to model and analyze leading wireless communication networking issues, which includes QoS, power control, resource sharing, etc. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wireless%20sensor%20network" title="wireless sensor network">wireless sensor network</a>, <a href="https://publications.waset.org/abstracts/search?q=game%20theory" title=" game theory"> game theory</a>, <a href="https://publications.waset.org/abstracts/search?q=cooperative%20game%20theory" title=" cooperative game theory"> cooperative game theory</a>, <a href="https://publications.waset.org/abstracts/search?q=non-cooperative%20game%20theory" title=" non-cooperative game theory"> non-cooperative game theory</a> </p> <a href="https://publications.waset.org/abstracts/67173/a-study-on-game-theory-approaches-for-wireless-sensor-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67173.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">134</span> Improving the LDMOS Temperature Compensation Bias Circuit to Optimize Back-Off</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonis%20Constantinides">Antonis Constantinides</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Yiallouras"> Christos Yiallouras</a>, <a href="https://publications.waset.org/abstracts/search?q=Christakis%20Damianou"> Christakis Damianou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The application of today's semiconductor transistors in high power UHF DVB-T linear amplifiers has evolved significantly by utilizing LDMOS technology. This fact provides engineers with the option to design a single transistor signal amplifier which enables output power and linearity that was unobtainable previously using bipolar junction transistors or later type first generation MOSFETS. The quiescent current stability in terms of thermal variations of the LDMOS guarantees a robust operation in any topology of DVB-T signal amplifiers. Otherwise, progressively uncontrolled heat dissipation enhancement on the LDMOS case can degrade the amplifier’s crucial parameters in regards to the gain, linearity, and RF stability, resulting in dysfunctional operation or a total destruction of the unit. This paper presents one more sophisticated approach from the traditional biasing circuits used so far in LDMOS DVB-T amplifiers. It utilizes a microprocessor control technology, providing stability in topologies where IDQ must be perfectly accurate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LDMOS" title="LDMOS">LDMOS</a>, <a href="https://publications.waset.org/abstracts/search?q=amplifier" title=" amplifier"> amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=back-off" title=" back-off"> back-off</a>, <a href="https://publications.waset.org/abstracts/search?q=bias%20circuit" title=" bias circuit"> bias circuit</a> </p> <a href="https://publications.waset.org/abstracts/11313/improving-the-ldmos-temperature-compensation-bias-circuit-to-optimize-back-off" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11313.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">133</span> A Detection Method of Faults in Railway Pantographs Based on Dynamic Phase Plots</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=G.%20Santamato">G. Santamato</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Solazzi"> M. Solazzi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Frisoli"> A. Frisoli </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Systems for detection of damages in railway pantographs effectively reduce the cost of maintenance and improve time scheduling. In this paper, we present an approach to design a monitoring tool fitting strong customer requirements such as portability and ease of use. Pantograph has been modeled to estimate its dynamical properties, since no data are available. With the aim to focus on suspensions health, a two Degrees of Freedom (DOF) scheme has been adopted. Parameters have been calculated by means of analytical dynamics. A Finite Element Method (FEM) modal analysis verified the former model with an acceptable error. The detection strategy seeks phase-plots topology alteration, induced by defects. In order to test the suitability of the method, leakage in the dashpot was simulated on the lumped model. Results are interesting because changes in phase plots are more appreciable than frequency-shift. Further calculations as well as experimental tests will support future developments of this smart strategy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pantograph%20models" title="pantograph models">pantograph models</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20plots" title=" phase plots"> phase plots</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20health%20monitoring" title=" structural health monitoring"> structural health monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=damage%20detection" title=" damage detection"> damage detection</a> </p> <a href="https://publications.waset.org/abstracts/50902/a-detection-method-of-faults-in-railway-pantographs-based-on-dynamic-phase-plots" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50902.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">362</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">132</span> Multithreading/Multiprocessing Simulation of The International Space Station Multibody System Using A Divide and Conquer Dynamics Formulation with Flexible Bodies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Luong%20A.%20Nguyen">Luong A. Nguyen</a>, <a href="https://publications.waset.org/abstracts/search?q=Elihu%20Deneke"> Elihu Deneke</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20L.%20Harman"> Thomas L. Harman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper describes a multibody dynamics algorithm formulated for parallel implementation on multiprocessor computing platforms using the divide-and-conquer approach. The system of interest is a general topology of rigid and elastic articulated bodies with or without loops. The algorithm is an extension of Featherstone’s divide and conquer approach to include the flexible-body dynamics formulation. The equations of motion, configured for the International Space Station (ISS) with its robotic manipulator arm as a system of articulated flexible bodies, are implemented in separate computer processors. The performance of this divide-and-conquer algorithm implementation in multiple processors is compared with an existing method implemented on a single processor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multibody%20dynamics" title="multibody dynamics">multibody dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=multiple%20processors" title=" multiple processors"> multiple processors</a>, <a href="https://publications.waset.org/abstracts/search?q=multithreading" title=" multithreading"> multithreading</a>, <a href="https://publications.waset.org/abstracts/search?q=divide-and-conquer%20algorithm" title=" divide-and-conquer algorithm"> divide-and-conquer algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20efficiency" title=" computational efficiency"> computational efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible%20body%20dynamics" title=" flexible body dynamics"> flexible body dynamics</a> </p> <a href="https://publications.waset.org/abstracts/60738/multithreadingmultiprocessing-simulation-of-the-international-space-station-multibody-system-using-a-divide-and-conquer-dynamics-formulation-with-flexible-bodies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60738.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> <ul class="pagination"> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=k%29-star%20topology&page=5" rel="prev">&lsaquo;</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=k%29-star%20topology&page=1">1</a></li> <li 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