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topology</title> <meta name="description" content="Search results for: star topology"> <meta name="keywords" content="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 navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="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> 505</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: 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">505</span> Fault Tolerant (n,k)-star Power Network Topology for Multi-Agent Communication in Automated Power Distribution Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ning%20Gong%03">Ning Gong</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Korostelev%03"> Michael Korostelev</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiangguo%20Ren%03"> Qiangguo Ren</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Bai%03"> Li Bai</a>, <a href="https://publications.waset.org/abstracts/search?q=Saroj%20K.%20Biswas%03"> Saroj K. Biswas</a>, <a href="https://publications.waset.org/abstracts/search?q=Frank%20Ferrese">Frank Ferrese</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the joint effect of the interconnected (n,k)-star network topology and Multi-Agent automated control on restoration and reconfiguration of power systems. With the increasing trend in development in Multi-Agent control technologies applied to power system reconfiguration in presence of faulty components or nodes. Fault tolerance is becoming an important challenge in the design processes of the distributed power system topology. Since the reconfiguration of a power system is performed by agent communication, the (n,k)-star interconnected network topology is studied and modeled in this paper to optimize the process of power reconfiguration. In this paper, we discuss the recently proposed (n,k)-star topology and examine its properties and advantages as compared to the traditional multi-bus power topologies. We design and simulate the topology model for distributed power system test cases. A related lemma based on the fault tolerance and conditional diagnosability properties is presented and proved both theoretically and practically. The conclusion is reached that (n,k)-star topology model has measurable advantages compared to standard bus power systems while exhibiting fault tolerance properties in power restoration, as well as showing efficiency when applied to power system route discovery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%28n" title="(n">(n</a>, <a href="https://publications.waset.org/abstracts/search?q=k%29-star%20topology" title="k)-star topology">k)-star topology</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20tolerance" title=" fault tolerance"> fault tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=conditional%20diagnosability" title=" conditional diagnosability"> conditional diagnosability</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-agent%20system" title=" multi-agent system"> multi-agent system</a>, <a href="https://publications.waset.org/abstracts/search?q=automated%20power%20system" title=" automated power system"> automated power system</a> </p> <a href="https://publications.waset.org/abstracts/17249/fault-tolerant-nk-star-power-network-topology-for-multi-agent-communication-in-automated-power-distribution-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17249.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">512</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">504</span> Fault Tolerant (n, k)-Star Power Network Topology for Multi-Agent Communication in Automated Power Distribution Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ning%20Gong">Ning Gong</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Korostelev"> Michael Korostelev</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiangguo%20Ren"> Qiangguo Ren</a>, <a href="https://publications.waset.org/abstracts/search?q=Li%20Bai"> Li Bai</a>, <a href="https://publications.waset.org/abstracts/search?q=Saroj%20Biswas"> Saroj Biswas</a>, <a href="https://publications.waset.org/abstracts/search?q=Frank%20Ferrese"> Frank Ferrese</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the joint effect of the interconnected (n,k)-star network topology and Multi-Agent automated control on restoration and reconfiguration of power systems. With the increasing trend in development in Multi-Agent control technologies applied to power system reconfiguration in presence of faulty components or nodes. Fault tolerance is becoming an important challenge in the design processes of the distributed power system topology. Since the reconfiguration of a power system is performed by agent communication, the (n,k)-star interconnected network topology is studied and modeled in this paper to optimize the process of power reconfiguration. In this paper, we discuss the recently proposed (n,k)-star topology and examine its properties and advantages as compared to the traditional multi-bus power topologies. We design and simulate the topology model for distributed power system test cases. A related lemma based on the fault tolerance and conditional diagnosability properties is presented and proved both theoretically and practically. The conclusion is reached that (n,k)-star topology model has measurable advantages compared to standard bus power systems while exhibiting fault tolerance properties in power restoration, as well as showing efficiency when applied to power system route discovery. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%28n" title="(n">(n</a>, <a href="https://publications.waset.org/abstracts/search?q=k%29-star%20topology" title=" k)-star topology"> k)-star topology</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20tolerance" title=" fault tolerance"> fault tolerance</a>, <a href="https://publications.waset.org/abstracts/search?q=conditional%20diagnosability" title=" conditional diagnosability"> conditional diagnosability</a>, <a href="https://publications.waset.org/abstracts/search?q=multi-agent%20system" title=" multi-agent system"> multi-agent system</a>, <a href="https://publications.waset.org/abstracts/search?q=automated%20power%20system" title=" automated power system "> automated power system </a> </p> <a href="https://publications.waset.org/abstracts/23400/fault-tolerant-n-k-star-power-network-topology-for-multi-agent-communication-in-automated-power-distribution-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23400.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">465</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">503</span> Stochastic Analysis of Linux Operating System through Copula Distribution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vijay%20Vir%20Singh">Vijay Vir Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is focused studying the Linux operating system connected in a LAN (local area network). The STAR topology (to be called subsystem-1) and BUS topology (to be called subsystem-2) are taken into account, which are placed at two different locations and connected to a server through a hub. In the both topologies BUS topology and STAR topology, we have assumed n clients. The system has two types of failures i.e. partial failure and complete failure. Further, the partial failure has been categorized as minor and major partial failure. It is assumed that the minor partial failure degrades the sub-systems and the major partial failure make the subsystem break down mode. The system may completely fail due to failure of server hacking and blocking etc. The system is studied using supplementary variable technique and Laplace transform by using different types of failure and two types of repair. The various measures of reliability for example, availability of system, reliability of system, MTTF, profit function for different parametric values have been discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=star%20topology" title="star topology">star topology</a>, <a href="https://publications.waset.org/abstracts/search?q=bus%20topology" title=" bus topology"> bus topology</a>, <a href="https://publications.waset.org/abstracts/search?q=blocking" title=" blocking"> blocking</a>, <a href="https://publications.waset.org/abstracts/search?q=hacking" title=" hacking"> hacking</a>, <a href="https://publications.waset.org/abstracts/search?q=Linux%20operating%20system" title=" Linux operating system"> Linux operating system</a>, <a href="https://publications.waset.org/abstracts/search?q=Gumbel-Hougaard%20family%20copula" title=" Gumbel-Hougaard family copula"> Gumbel-Hougaard family copula</a>, <a href="https://publications.waset.org/abstracts/search?q=supplementary%20variable" title=" supplementary variable"> supplementary variable</a> </p> <a href="https://publications.waset.org/abstracts/48060/stochastic-analysis-of-linux-operating-system-through-copula-distribution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48060.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">370</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">502</span> Performance Analysis of LINUX Operating System Connected in LAN Using Gumbel-Hougaard Family Copula Distribution</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=V.%20V.%20Singh">V. V. Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper we have focused on the study of a Linux operating system connected in a LAN (local area network). We have considered two different topologies STAR topology (subsystem-1) and BUS topology (subsystem-2) which are placed at two different places and connected to a server through a hub. In both topologies BUS topology and STAR topology, we have assumed 'n' clients. The system has two types of failure partial failure and complete failure. Further the partial failure has been categorized as minor partial failure and major partial failure. It is assumed that minor partial failure degrades the subsystem and the major partial failure brings the subsystem to break down mode. The system can completely failed due to failure of server hacking and blocking etc. The system is studied by supplementary variable technique and Laplace transform by taking different types of failure and two types of repairs. The various measures of reliability like availability of system, MTTF, profit function for different parametric values has been discussed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=star%20topology" title="star topology">star topology</a>, <a href="https://publications.waset.org/abstracts/search?q=bus%20topology" title=" bus topology"> bus topology</a>, <a href="https://publications.waset.org/abstracts/search?q=hacking" title=" hacking"> hacking</a>, <a href="https://publications.waset.org/abstracts/search?q=blocking" title=" blocking"> blocking</a>, <a href="https://publications.waset.org/abstracts/search?q=linux%20operating%20system" title=" linux operating system"> linux operating system</a>, <a href="https://publications.waset.org/abstracts/search?q=Gumbel-Hougaard%20family%20copula" title=" Gumbel-Hougaard family copula"> Gumbel-Hougaard family copula</a>, <a href="https://publications.waset.org/abstracts/search?q=supplementary%20variable" title=" supplementary variable "> supplementary variable </a> </p> <a href="https://publications.waset.org/abstracts/33606/performance-analysis-of-linux-operating-system-connected-in-lan-using-gumbel-hougaard-family-copula-distribution" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33606.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">577</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">501</span> Synchronization of Semiconductor Laser Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20M.%20L%C3%B3pez-Guti%C3%A9rrez">R. M. López-Gutiérrez</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Cardoza-Avenda%C3%B1o"> L. Cardoza-Avendaño</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Cervantes-de%20%C3%81vila"> H. Cervantes-de Ávila</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20A.%20Michel-Macarty"> J. A. Michel-Macarty</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Cruz-Hern%C3%A1ndez"> C. Cruz-Hernández</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Arellano-Delgado"> A. Arellano-Delgado</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Carmona-Rodr%C3%ADguez"> R. Carmona-Rodríguez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, synchronization of multiple chaotic semiconductor lasers is achieved by appealing to complex system theory. In particular, we consider dynamical networks composed by semiconductor laser, as interconnected nodes, where the interaction in the networks are defined by coupling the first state of each node. An interesting case is synchronized with master-slave configuration in star topology. Nodes of these networks are modeled for the laser and simulated by Matlab. These results are applicable to private communication. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=chaotic%20laser" title="chaotic laser">chaotic laser</a>, <a href="https://publications.waset.org/abstracts/search?q=network" title=" network"> network</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20topology" title=" star topology"> star topology</a>, <a href="https://publications.waset.org/abstracts/search?q=synchronization" title=" synchronization"> synchronization</a> </p> <a href="https://publications.waset.org/abstracts/34528/synchronization-of-semiconductor-laser-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34528.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">566</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">500</span> Channels Splitting Strategy for Optical Local Area Networks of Passive Star Topology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peristera%20Baziana">Peristera Baziana</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we present a network configuration for a WDM LANs of passive star topology that assume that the set of data WDM channels is split into two separate sets of channels, with different access rights over them. Especially, a synchronous transmission WDMA access algorithm is adopted in order to increase the probability of successful transmission over the data channels and consequently to reduce the probability of data packets transmission cancellation in order to avoid the data channels collisions. Thus, a control pre-transmission access scheme is followed over a separate control channel. An analytical Markovian model is studied and the average throughput is mathematically derived. The performance is studied for several numbers of data channels and various values of control phase duration. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=access%20algorithm" title="access algorithm">access algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=channels%20division" title=" channels division"> channels division</a>, <a href="https://publications.waset.org/abstracts/search?q=collisions%20avoidance" title=" collisions avoidance"> collisions avoidance</a>, <a href="https://publications.waset.org/abstracts/search?q=wavelength%20division%20multiplexing" title=" wavelength division multiplexing"> wavelength division multiplexing</a> </p> <a href="https://publications.waset.org/abstracts/63025/channels-splitting-strategy-for-optical-local-area-networks-of-passive-star-topology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63025.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">296</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">499</span> Nano Generalized Topology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Y.%20Bakeir">M. Y. Bakeir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Rough set theory is a recent approach for reasoning about data. It has achieved a large amount of applications in various real-life fields. The main idea of rough sets corresponds to the lower and upper set approximations. These two approximations are exactly the interior and the closure of the set with respect to a certain topology on a collection U of imprecise data acquired from any real-life field. The base of the topology is formed by equivalence classes of an equivalence relation E defined on U using the available information about data. The theory of generalized topology was studied by Cs´asz´ar. It is well known that generalized topology in the sense of Cs´asz´ar is a generalization of the topology on a set. On the other hand, many important collections of sets related with the topology on a set form a generalized topology. The notion of Nano topology was introduced by Lellis Thivagar, which was defined in terms of approximations and boundary region of a subset of an universe using an equivalence relation on it. The purpose of this paper is to introduce a new generalized topology in terms of rough set called nano generalized topology <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rough%20sets" title="rough sets">rough sets</a>, <a href="https://publications.waset.org/abstracts/search?q=topological%20space" title=" topological space"> topological space</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20topology" title=" generalized topology"> generalized topology</a>, <a href="https://publications.waset.org/abstracts/search?q=nano%20topology" title=" nano topology "> nano topology </a> </p> <a href="https://publications.waset.org/abstracts/28088/nano-generalized-topology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28088.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">498</span> Development of Star Tracker for Satellite</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Yelubayev">S. Yelubayev</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Ten"> V. Ten</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Albazarov"> B. Albazarov</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Sarsenbayev"> E. Sarsenbayev</a>, <a href="https://publications.waset.org/abstracts/search?q=%D0%9A.%20%D0%90lipbayev"> К. Аlipbayev</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Shamro"> A. Shamro</a>, <a href="https://publications.waset.org/abstracts/search?q=%D0%A2.%20Bopeyev"> Т. Bopeyev</a>, <a href="https://publications.waset.org/abstracts/search?q=%D0%90.%20Sukhenko"> А. Sukhenko</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently in Kazakhstan much attention is paid to the development of space branch. Successful launch of two Earth remote sensing satellite is carried out, projects on development of components for satellite are being carried out. In particular, the project on development of star tracker experimental model is completed. In the future it is planned to use this experimental model for development of star tracker prototype. Main stages of star tracker experimental model development are considered in this article. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=development" title="development">development</a>, <a href="https://publications.waset.org/abstracts/search?q=prototype" title=" prototype"> prototype</a>, <a href="https://publications.waset.org/abstracts/search?q=satellite" title=" satellite"> satellite</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20tracker" title=" star tracker"> star tracker</a> </p> <a href="https://publications.waset.org/abstracts/23521/development-of-star-tracker-for-satellite" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23521.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">477</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">497</span> The Correlation between Users’ Star Rating and Usability on Mobile Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abdulmohsen%20A.%20AlBesher">Abdulmohsen A. AlBesher</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20T.%20Stone"> Richard T. Stone</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Star rating for mobile applications is a very useful way to differentiate between the best and worst rated applications. However, the question is whether the rating reflects the level of usability or not. The aim of this paper is to find out if the user’ star ratings on mobile apps correlate with the usability of those apps. Thus, we tested three mobile apps, which have different star ratings: low, medium, and high. Participating in the study, 15 mobile phone users were asked to do one single task for each of the three tested apps. After each task, the participant evaluated the app by answering a survey based on the System Usability Scale (SUS). The results found that there is no major correlation between the star rating and the usability. However, it was found that the task completion time and the numbers of errors that may happen while completing the task were significantly correlated to the usability. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mobile%20applications" title="mobile applications">mobile applications</a>, <a href="https://publications.waset.org/abstracts/search?q=SUS" title=" SUS"> SUS</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20rating" title=" star rating"> star rating</a>, <a href="https://publications.waset.org/abstracts/search?q=usability" title=" usability"> usability</a> </p> <a href="https://publications.waset.org/abstracts/61079/the-correlation-between-users-star-rating-and-usability-on-mobile-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/61079.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">321</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">496</span> Development of Star Image Simulator for Star Tracker Algorithm Validation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zoubida%20Mahi">Zoubida Mahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A successful satellite mission in space requires a reliable attitude and orbit control system to command, control and position the satellite in appropriate orbits. Several sensors are used for attitude control, such as magnetic sensors, earth sensors, horizon sensors, gyroscopes, and solar sensors. The star tracker is the most accurate sensor compared to other sensors, and it is able to offer high-accuracy attitude control without the need for prior attitude information. There are mainly three approaches in star sensor research: digital simulation, hardware in the loop simulation, and field test of star observation. In the digital simulation approach, all of the processes are done in software, including star image simulation. Hence, it is necessary to develop star image simulation software that could simulate real space environments and various star sensor configurations. In this paper, we present a new stellar image simulation tool that is used to test and validate the stellar sensor algorithms; the developed tool allows to simulate of stellar images with several types of noise, such as background noise, gaussian noise, Poisson noise, multiplicative noise, and several scenarios that exist in space such as the presence of the moon, the presence of optical system problem, illumination and false objects. On the other hand, we present in this paper a new star extraction algorithm based on a new centroid calculation method. We compared our algorithm with other star extraction algorithms from the literature, and the results obtained show the star extraction capability of the proposed algorithm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=star%20tracker" title="star tracker">star tracker</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20simulation" title=" star simulation"> star simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20detection" title=" star detection"> star detection</a>, <a href="https://publications.waset.org/abstracts/search?q=centroid" title=" centroid"> centroid</a>, <a href="https://publications.waset.org/abstracts/search?q=noise" title=" noise"> noise</a>, <a href="https://publications.waset.org/abstracts/search?q=scenario" title=" scenario"> scenario</a> </p> <a href="https://publications.waset.org/abstracts/159131/development-of-star-image-simulator-for-star-tracker-algorithm-validation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/159131.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">96</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">495</span> The Vertex Degree Distance of One Vertex Union of the Cycle and the Star</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ying%20Wang">Ying Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Haiyan%20Xie"> Haiyan Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Aoming%20Zhang"> Aoming Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The degree distance of a graph is a graph invariant that is more sensitive than the Wiener index. In this paper, we calculate the vertex degree distances of one vertex union of the cycle and the star, and the degree distance of one vertex union of the cycle and the star. These results lay a foundation for further study on the extreme value of the vertex degree distances, and the distribution of the vertices with the extreme value in one vertex union of the cycle and the star. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=degree%20distance" title="degree distance">degree distance</a>, <a href="https://publications.waset.org/abstracts/search?q=vertex-degree-distance" title=" vertex-degree-distance"> vertex-degree-distance</a>, <a href="https://publications.waset.org/abstracts/search?q=one%20vertex%20union%20of%20a%20cycle%20and%20a%20star" title=" one vertex union of a cycle and a star"> one vertex union of a cycle and a star</a>, <a href="https://publications.waset.org/abstracts/search?q=graph" title=" graph"> graph</a> </p> <a href="https://publications.waset.org/abstracts/127232/the-vertex-degree-distance-of-one-vertex-union-of-the-cycle-and-the-star" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127232.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">154</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">494</span> The Load Balancing Algorithm for the Star Interconnection Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ahmad%20M.%20Awwad">Ahmad M. Awwad</a>, <a href="https://publications.waset.org/abstracts/search?q=Jehad%20Al-Sadi"> Jehad Al-Sadi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The star network is one of the promising interconnection networks for future high speed parallel computers, it is expected to be one of the future-generation networks. The star network is both edge and vertex symmetry, it was shown to have many gorgeous topological proprieties also it is owns hierarchical structure framework. Although much of the research work has been done on this promising network in literature, it still suffers from having enough algorithms for load balancing problem. In this paper we try to work on this issue by investigating and proposing an efficient algorithm for load balancing problem for the star network. The proposed algorithm is called Star Clustered Dimension Exchange Method SCDEM to be implemented on the star network. The proposed algorithm is based on the Clustered Dimension Exchange Method (CDEM). The SCDEM algorithm is shown to be efficient in redistributing the load balancing as evenly as possible among all nodes of different factor networks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=load%20balancing" title="load balancing">load balancing</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20network" title=" star network"> star network</a>, <a href="https://publications.waset.org/abstracts/search?q=interconnection%20networks" title=" interconnection networks"> interconnection networks</a>, <a href="https://publications.waset.org/abstracts/search?q=algorithm" title=" algorithm"> algorithm</a> </p> <a href="https://publications.waset.org/abstracts/8818/the-load-balancing-algorithm-for-the-star-interconnection-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8818.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">319</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">493</span> Wireless Sensor Anomaly Detection Using Soft Computing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mouhammd%20Alkasassbeh">Mouhammd Alkasassbeh</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Lasasmeh"> Alaa Lasasmeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We live in an era of rapid development as a result of significant scientific growth. Like other technologies, wireless sensor networks (WSNs) are playing one of the main roles. Based on WSNs, ZigBee adds many features to devices, such as minimum cost and power consumption, and increasing the range and connect ability of sensor nodes. ZigBee technology has come to be used in various fields, including science, engineering, and networks, and even in medicinal aspects of intelligence building. In this work, we generated two main datasets, the first being based on tree topology and the second on star topology. The datasets were evaluated by three machine learning (ML) algorithms: J48, meta.j48 and multilayer perceptron (MLP). Each topology was classified into normal and abnormal (attack) network traffic. The dataset used in our work contained simulated data from network simulation 2 (NS2). In each database, the Bayesian network meta.j48 classifier achieved the highest accuracy level among other classifiers, of 99.7% and 99.2% respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=IDS" title="IDS">IDS</a>, <a href="https://publications.waset.org/abstracts/search?q=Machine%20learning" title=" Machine learning"> Machine learning</a>, <a href="https://publications.waset.org/abstracts/search?q=WSN" title=" WSN"> WSN</a>, <a href="https://publications.waset.org/abstracts/search?q=ZigBee%20technology" title=" ZigBee technology"> ZigBee technology</a> </p> <a href="https://publications.waset.org/abstracts/50660/wireless-sensor-anomaly-detection-using-soft-computing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/50660.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">543</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">492</span> Design and Burnback Analysis of Three Dimensional Modified Star Grain</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Almostafa%20Abdelaziz">Almostafa Abdelaziz</a>, <a href="https://publications.waset.org/abstracts/search?q=Liang%20Guozhu"> Liang Guozhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Anwer%20Elsayed"> Anwer Elsayed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The determination of grain geometry is an important and critical step in the design of solid propellant rocket motor. In this study, the design process involved parametric geometry modeling in CAD, MATLAB coding of performance prediction and 2D star grain ignition experiment. The 2D star grain burnback achieved by creating new surface via each web increment and calculating geometrical properties at each step. The 2D star grain is further modified to burn as a tapered 3D star grain. Zero dimensional method used to calculate the internal ballistic performance. Experimental and theoretical results were compared in order to validate the performance prediction of the solid rocket motor. The results show that the usage of 3D grain geometry will decrease the pressure inside the combustion chamber and enhance the volumetric loading ratio. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=burnback%20analysis" title="burnback analysis">burnback analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=rocket%20motor" title=" rocket motor"> rocket motor</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20grain" title=" star grain"> star grain</a>, <a href="https://publications.waset.org/abstracts/search?q=three%20dimensional%20grains" title=" three dimensional grains"> three dimensional grains</a> </p> <a href="https://publications.waset.org/abstracts/82081/design-and-burnback-analysis-of-three-dimensional-modified-star-grain" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82081.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">244</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">491</span> Topology Optimization of Structures with Web-Openings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20K.%20Lee">D. K. Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20M.%20Shin"> S. M. Shin</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20H.%20Lee"> J. H. Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Topology optimization technique utilizes constant element densities as design parameters. Finally, optimal distribution contours of the material densities between voids (0) and solids (1) in design domain represent the determination of topology. It means that regions with element density values become occupied by solids in design domain, while there are only void phases in regions where no density values exist. Therefore the void regions of topology optimization results provide design information to decide appropriate depositions of web-opening in structure. Contrary to the basic objective of the topology optimization technique which is to obtain optimal topology of structures, this present study proposes a new idea that topology optimization results can be also utilized for decision of proper web-opening’s position. Numerical examples of linear elastostatic structures demonstrate efficiency of methodological design processes using topology optimization in order to determinate the proper deposition of web-openings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=topology%20optimization" title="topology optimization">topology optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=web-opening" title=" web-opening"> web-opening</a>, <a href="https://publications.waset.org/abstracts/search?q=structure" title=" structure"> structure</a>, <a href="https://publications.waset.org/abstracts/search?q=element%20density" title=" element density"> element density</a>, <a href="https://publications.waset.org/abstracts/search?q=material" title=" material "> material </a> </p> <a href="https://publications.waset.org/abstracts/12450/topology-optimization-of-structures-with-web-openings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12450.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">472</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">490</span> Ultra High Performance Concrete Using Special Aggregates for Irregular Structures (the New Concrete Technology)</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arjun">Arjun</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20D.%20Singh"> A. D. Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Concrete the basic material using in construction across the global these days. The purpose of this special concrete is to provide extra strength and stability for irregular structure where the center of gravity is disturbed. In this paper an effort has been made to use different type of material aggregates has been discussed. We named As "STAR Aggregates" which has qualities to resist Shear, tension and compression forces. We have been divided into coarse aggregates and fine aggregates according to their sizes. Star Aggregates has interlocking behavior and cutting edge technology. Star aggregates had been draft and deign in Auto CAD and then analysis in ANSYS software. by using special aggregates we deign concrete grade of M40 for mega structures and irregular structure. This special concrete with STAR aggregates use in construction for irregular structure like Bridges, Skyscrapers or in deigned buildings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=star%20aggregates" title="star aggregates">star aggregates</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20performance%20concrete" title=" high performance concrete"> high performance concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20aggregates" title=" material aggregates"> material aggregates</a>, <a href="https://publications.waset.org/abstracts/search?q=interlocking" title=" interlocking"> interlocking</a> </p> <a href="https://publications.waset.org/abstracts/23263/ultra-high-performance-concrete-using-special-aggregates-for-irregular-structures-the-new-concrete-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23263.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">567</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">489</span> Control of Doubly Star Induction Motor Using Direct Torque DTC Based To on RST Regulator </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nadia%20Akkari">Nadia Akkari </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the analysis and simulation of the control of double star induction motor, using direct torque control (DTC) based on RST regulator. The DTC is an excellent solution for general- purpose induction drives in very wide range the short sampling time required by the TC schemes makes them suited to a very fast torque and flux controlled drives as well the simplicity of the control algorithm. DTC is inherently a motion sensorless control method. The RST regulator can improve the double star induction motor performance in terms of overshoot, rapidity, cancellation of disturbance, and capacity to maintain a high level of performance. Simulation results indicate that the proposed regulator has better performance responses. The implementation of the DTC applied to a double star induction motor based on RST regulator is validated with simulated results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Direct%20Torque%20Control%20%28DTC%29" title="Direct Torque Control (DTC)">Direct Torque Control (DTC)</a>, <a href="https://publications.waset.org/abstracts/search?q=Double%20Star%20Induction%20Motor%20%28DSIM%29" title=" Double Star Induction Motor (DSIM)"> Double Star Induction Motor (DSIM)</a>, <a href="https://publications.waset.org/abstracts/search?q=RST%20Regulator" title=" RST Regulator "> RST Regulator </a> </p> <a href="https://publications.waset.org/abstracts/23578/control-of-doubly-star-induction-motor-using-direct-torque-dtc-based-to-on-rst-regulator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23578.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">520</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">488</span> Integral Domains and Alexandroff Topology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shai%20Sarussi">Shai Sarussi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Let S be an integral domain which is not a field, let F be its field of fractions, and let A be an F-algebra. An S-subalgebra R of A is called S-nice if R ∩ F = S and F R = A. A topological space whose set of open sets is closed under arbitrary intersections is called an Alexandroff space. Inspired by the well-known Zariski-Riemann space and the Zariski topology on the set of prime ideals of a commutative ring, we define a topology on the set of all S-nice subalgebras of A. Consequently, we get an interplay between Algebra and topology, that gives us a better understanding of the S-nice subalgebras of A. It is shown that every irreducible subset of S-nice subalgebras of A has a supremum; and a characterization of the irreducible components is given, in terms of maximal S-nice subalgebras of A. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Alexandroff%20topology" title="Alexandroff topology">Alexandroff topology</a>, <a href="https://publications.waset.org/abstracts/search?q=integral%20domains" title=" integral domains"> integral domains</a>, <a href="https://publications.waset.org/abstracts/search?q=Zariski-Riemann%20space" title=" Zariski-Riemann space"> Zariski-Riemann space</a>, <a href="https://publications.waset.org/abstracts/search?q=S-nice%20subalgebras" title=" S-nice subalgebras"> S-nice subalgebras</a> </p> <a href="https://publications.waset.org/abstracts/154343/integral-domains-and-alexandroff-topology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/154343.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">109</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">487</span> The Evolution of the Simulated and Observed Star Formation Rates of Galaxies for the Past 13 Billion Years</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonios%20Katsianis">Antonios Katsianis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> I present the evolution of the galaxy Star Formation Rate Function (SFRF), star formation rate-stellar mass relation (SFR-M*) and Cosmic Star Formation Rate Density (CSFRD) of z = 0-8 galaxies employing both the Evolution and Assembly of GaLaxies and their Environments (EAGLE) simulations and a compilation of UV, Ha, radio and IR data. While I present comparisons between the above, I evaluate the effect and importance of supernovae/active galactic nuclei feedback. The relation between the star formation rate and stellar mass of galaxies represents a fundamental constraint on galaxy formation, and has been studied extensively both in observations and cosmological hydrodynamic simulations. However, a tension between the above is reported in the literature. I present the evolution of the SFR-M* relation and demonstrate the inconsistencies between observations that are retrieved using different methods. I employ cosmological hydrodynamic simulations combined with radiative transfer methods and compare these with a range of observed data in order to investigate further the root of this tension. Last, I present insights about the scatter of the SFR-M* relation and investigate which mechanisms (e.g. feedback) drive its shape and evolution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cosmological%20simulations" title="cosmological simulations">cosmological simulations</a>, <a href="https://publications.waset.org/abstracts/search?q=galaxy%20formation%20and%20evolution" title=" galaxy formation and evolution"> galaxy formation and evolution</a>, <a href="https://publications.waset.org/abstracts/search?q=star%20formation%20rate" title=" star formation rate"> star formation rate</a>, <a href="https://publications.waset.org/abstracts/search?q=stellar%20masses" title=" stellar masses"> stellar masses</a> </p> <a href="https://publications.waset.org/abstracts/118594/the-evolution-of-the-simulated-and-observed-star-formation-rates-of-galaxies-for-the-past-13-billion-years" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/118594.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">148</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">486</span> Isogeometric Topology Optimization in Cracked Structures Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dongkyu%20Lee">Dongkyu Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Thanh%20Banh%20Thien"> Thanh Banh Thien</a>, <a href="https://publications.waset.org/abstracts/search?q=Soomi%20Shin"> Soomi Shin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present study, the isogeometric topology optimization is proposed for cracked structures through using Solid Isotropic Material with Penalization (SIMP) as a design model. Design density variables defined in the variable space are used to approximate the element analysis density by the bivariate B-spline basis functions. The mathematical formulation of topology optimization problem solving minimum structural compliance is an alternating active-phase algorithm with the Gauss-Seidel version as an optimization model of optimality criteria. Stiffness and adjoint sensitivity formulations linked to strain energy of cracked structure are proposed in terms of design density variables. Numerical examples demonstrate interactions of topology optimization to structures design with cracks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=topology%20optimization" title="topology optimization">topology optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=isogeometric" title=" isogeometric"> isogeometric</a>, <a href="https://publications.waset.org/abstracts/search?q=NURBS" title=" NURBS"> NURBS</a>, <a href="https://publications.waset.org/abstracts/search?q=design" title=" design"> design</a> </p> <a href="https://publications.waset.org/abstracts/79410/isogeometric-topology-optimization-in-cracked-structures-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79410.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">492</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">485</span> Reliability Based Topology Optimization: An Efficient Method for Material Uncertainty</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Jalalpour">Mehdi Jalalpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Mazdak%20Tootkaboni"> Mazdak Tootkaboni</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present a computationally efficient method for reliability-based topology optimization under material properties uncertainty, which is assumed to be lognormally distributed and correlated within the domain. Computational efficiency is achieved through estimating the response statistics with stochastic perturbation of second order, using these statistics to fit an appropriate distribution that follows the empirical distribution of the response, and employing an efficient gradient-based optimizer. The proposed algorithm is utilized for design of new structures and the changes in the optimized topology is discussed for various levels of target reliability and correlation strength. Predictions were verified thorough comparison with results obtained using Monte Carlo simulation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=material%20uncertainty" title="material uncertainty">material uncertainty</a>, <a href="https://publications.waset.org/abstracts/search?q=stochastic%20perturbation" title=" stochastic perturbation"> stochastic perturbation</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20reliability" title=" structural reliability"> structural reliability</a>, <a href="https://publications.waset.org/abstracts/search?q=topology%20optimization" title=" topology optimization"> topology optimization</a> </p> <a href="https://publications.waset.org/abstracts/24499/reliability-based-topology-optimization-an-efficient-method-for-material-uncertainty" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24499.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">605</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">484</span> Structural Analysis and Detail Design of APV Module Structure Using Topology Optimization Design</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hyun%20Kyu%20Cho">Hyun Kyu Cho</a>, <a href="https://publications.waset.org/abstracts/search?q=Jun%20Soo%20Kim"> Jun Soo Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Young%20Hoon%20Lee"> Young Hoon Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Sang%20Hoon%20Kang"> Sang Hoon Kang</a>, <a href="https://publications.waset.org/abstracts/search?q=Young%20Chul%20Park"> Young Chul Park</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the study, structure for one of offshore drilling system APV(Air Pressure Vessle) modules was designed by using topology optimum design and performed structural safety evaluation according to DNV rules. 3D model created base on design area and non-design area separated by using topology optimization for the environmental loads. This model separated 17 types for wind loads and dynamic loads and performed structural analysis evaluation for each model. As a result, the maximum stress occurred 181.25MPa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=APV" title="APV">APV</a>, <a href="https://publications.waset.org/abstracts/search?q=topology%20optimum%20design" title=" topology optimum design"> topology optimum design</a>, <a href="https://publications.waset.org/abstracts/search?q=DNV" title=" DNV"> DNV</a>, <a href="https://publications.waset.org/abstracts/search?q=structural%20analysis" title=" structural analysis"> structural analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=stress" title=" stress"> stress</a> </p> <a href="https://publications.waset.org/abstracts/53957/structural-analysis-and-detail-design-of-apv-module-structure-using-topology-optimization-design" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/53957.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">425</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">483</span> Application of Additive Manufacturing for Production of Optimum Topologies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdi%20Mottahedi">Mahdi Mottahedi</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Zahn"> Peter Zahn</a>, <a href="https://publications.waset.org/abstracts/search?q=Armin%20Lechler"> Armin Lechler</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexander%20Verl"> Alexander Verl</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Optimal topology of components leads to the maximum stiffness with the minimum material use. For the generation of these topologies, normally algorithms are employed, which tackle manufacturing limitations, at the cost of the optimal result. The global optimum result with penalty factor one, however, cannot be fabricated with conventional methods. In this article, an additive manufacturing method is introduced, in order to enable the production of global topology optimization results. For a benchmark, topology optimization with higher and lower penalty factors are performed. Different algorithms are employed in order to interpret the results of topology optimization with lower factors in many microstructure layers. These layers are then joined to form the final geometry. The algorithms’ benefits are then compared experimentally and numerically for the best interpretation. The findings demonstrate that by implementation of the selected algorithm, the stiffness of the components produced with this method is higher than what could have been produced by conventional techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=topology%20optimization" title="topology optimization">topology optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=additive%20manufacturing" title=" additive manufacturing"> additive manufacturing</a>, <a href="https://publications.waset.org/abstracts/search?q=3D-printer" title=" 3D-printer"> 3D-printer</a>, <a href="https://publications.waset.org/abstracts/search?q=laminated%20object%20manufacturing" title=" laminated object manufacturing"> laminated object manufacturing</a> </p> <a href="https://publications.waset.org/abstracts/48038/application-of-additive-manufacturing-for-production-of-optimum-topologies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48038.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">482</span> Exploring the Implementation of Strategic Management Process in Egyptian Five-Star Hotels: Resorts versus Downtown Hotels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jailan%20Mohamed%20El%20Demerdash">Jailan Mohamed El Demerdash</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In consideration of the challenges and the fierce global competition that have emerged in today’s hotel industry, it was important to shed light on the subject of strategic management. In addition, five-star hotels play a crucial role in supporting the tourism industry and investment in Egypt. Therefore, this study aims at exploring the scope of implementing strategic management practices in five-star hotels in Egypt and examining the differences between resorts and downtown hotels regarding the implementation of a strategic management process. The impact of the difference in hotel types on the implementation of the strategic management process will be examined. Simple random sampling technique will be employed to select the sample from the target population, including hotels from Sharm El- Sheikh, Cairo, and Hurghada cities. The data collection instrument employed in the current study is an interviewer-administered questionnaire. Eventually, combining the results of the study with the literature review helped to present a number of recommendations that have to be directed to hotel managers in the area of strategic management practices. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=strategic%20management" title="strategic management">strategic management</a>, <a href="https://publications.waset.org/abstracts/search?q=strategic%20tools" title=" strategic tools"> strategic tools</a>, <a href="https://publications.waset.org/abstracts/search?q=five-star%20hotels" title=" five-star hotels"> five-star hotels</a>, <a href="https://publications.waset.org/abstracts/search?q=resorts" title=" resorts"> resorts</a>, <a href="https://publications.waset.org/abstracts/search?q=downtown%20hotels" title=" downtown hotels"> downtown hotels</a>, <a href="https://publications.waset.org/abstracts/search?q=Egypt" title=" Egypt"> Egypt</a> </p> <a href="https://publications.waset.org/abstracts/106779/exploring-the-implementation-of-strategic-management-process-in-egyptian-five-star-hotels-resorts-versus-downtown-hotels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/106779.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">144</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">481</span> Analyzing Boson Star as a Candidate for Dark Galaxy Using ADM Formulation of General Relativity</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Aria%20Ratmandanu">Aria Ratmandanu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Boson stars can be viewed as zero temperature ground state, Bose-Einstein condensates, characterized by enormous occupation numbers. Time-dependent spherically symmetric spacetime can be a model of Boson Star. We use (3+1) split of Einstein equation (ADM formulation of general relativity) to solve Einstein field equation coupled to a complex scalar field (Einstein-Klein-Gordon Equation) on time-dependent spherically symmetric spacetime, We get the result that Boson stars are pulsating stars with the frequency of oscillation equal to its density. We search for interior solution of Boson stars and get the T.O.V. (Tollman-Oppenheimer-Volkoff) equation for Boson stars. Using T.O.V. equation, we get the equation of state and the relation between pressure and density, its total mass and along with its gravitational Mass. We found that the hypothetical particle Axion could form a Boson star with the size of a milky way galaxy and make it a candidate for a dark galaxy, (a galaxy that consists almost entirely of dark matter). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=axion" title="axion">axion</a>, <a href="https://publications.waset.org/abstracts/search?q=boson%20star" title=" boson star"> boson star</a>, <a href="https://publications.waset.org/abstracts/search?q=dark%20galaxy" title=" dark galaxy"> dark galaxy</a>, <a href="https://publications.waset.org/abstracts/search?q=time-dependent%20spherically%20symmetric%20spacetime" title=" time-dependent spherically symmetric spacetime"> time-dependent spherically symmetric spacetime</a> </p> <a href="https://publications.waset.org/abstracts/70005/analyzing-boson-star-as-a-candidate-for-dark-galaxy-using-adm-formulation-of-general-relativity" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70005.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">243</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">480</span> Survey: Topology Hiding in Multipath Routing Protocol in MANET</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Akshay%20Suhas%20Phalke">Akshay Suhas Phalke</a>, <a href="https://publications.waset.org/abstracts/search?q=Manohar%20S.%20Chaudhari"> Manohar S. Chaudhari </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we have discussed the multipath routing with its variants. Our purpose is to discuss the different types of the multipath routing mechanism. Here we also put the taxonomy of the multipath routing. Multipath routing is used for the alternate path routing, reliable transmission of data and for better utilization of network resources. We also discussed the multipath routing for topology hiding such as TOHIP. In multipath routing, different parameters such as energy efficiency, packet delivery ratio, shortest path routing, fault tolerance play an important role. We have discussed a number of multipath routing protocol based on different parameters lastly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=multi-path%20routing" title="multi-path routing">multi-path routing</a>, <a href="https://publications.waset.org/abstracts/search?q=WSN" title=" WSN"> WSN</a>, <a href="https://publications.waset.org/abstracts/search?q=topology" title=" topology"> topology</a>, <a href="https://publications.waset.org/abstracts/search?q=fault%20detection" title=" fault detection"> fault detection</a>, <a href="https://publications.waset.org/abstracts/search?q=trust" title=" trust"> trust</a> </p> <a href="https://publications.waset.org/abstracts/45654/survey-topology-hiding-in-multipath-routing-protocol-in-manet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/45654.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">353</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">479</span> A New Resonance Solution to Suppress the Voltage Stresses in the Forward Topology Used in a Switch Mode Power Supply</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maamar%20Latroch">Maamar Latroch</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Bourahla"> Mohamed Bourahla</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Forward topology used in switch mode power supply (SMPS) is one of the most famous configuration feeding DC systems such as telecommunication systems and other specific applications where the galvanic isolation is required. This configuration benefits of the high frequency feature of the transformer to provide a small size and light weight of the over all system. However, the stresses existing on the power switch during an ON/OFF commutation limit the transmitted power to the DC load. This paper investigates the main causes of the stresses in voltage existing during a commutation cycle and suggest a low cost solution that eliminates the overvoltage. As a result, this configuration will yield the possibility of the use of this configuration in higher power applications. Simulation results will show the efficiency of the presented method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=switch%20mode%20power%20supply" title="switch mode power supply">switch mode power supply</a>, <a href="https://publications.waset.org/abstracts/search?q=forward%20topology" title=" forward topology"> forward topology</a>, <a href="https://publications.waset.org/abstracts/search?q=resonance%20topology" title=" resonance topology"> resonance topology</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20frequency%20commutation" title=" high frequency commutation"> high frequency commutation</a> </p> <a href="https://publications.waset.org/abstracts/32934/a-new-resonance-solution-to-suppress-the-voltage-stresses-in-the-forward-topology-used-in-a-switch-mode-power-supply" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/32934.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">437</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">478</span> Periodic Topology and Size Optimization Design of Tower Crane Boom</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wu%20Qinglong">Wu Qinglong</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhou%20Qicai"> Zhou Qicai</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiong%20Xiaolei"> Xiong Xiaolei</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhang%20Richeng"> Zhang Richeng </a> </p> <p class="card-text"><strong>Abstract:</strong></p> In order to achieve the layout and size optimization of the web members of tower crane boom, a truss topology and cross section size optimization method based on continuum is proposed considering three typical working conditions. Firstly, the optimization model is established by replacing web members with web plates. And the web plates are divided into several sub-domains so that periodic soft kill option (SKO) method can be carried out for topology optimization of the slender boom. After getting the optimized topology of web plates, the optimized layout of web members is formed through extracting the principal stress distribution. Finally, using the web member radius as design variable, the boom compliance as objective and the material volume of the boom as constraint, the cross section size optimization mathematical model is established. The size optimization criterion is deduced from the mathematical model by Lagrange multiplier method and Kuhn-Tucker condition. By comparing the original boom with the optimal boom, it is identified that this optimization method can effectively lighten the boom and improve its performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=tower%20crane%20boom" title="tower crane boom">tower crane boom</a>, <a href="https://publications.waset.org/abstracts/search?q=topology%20optimization" title=" topology optimization"> topology optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=size%20optimization" title=" size optimization"> size optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=periodic" title=" periodic"> periodic</a>, <a href="https://publications.waset.org/abstracts/search?q=SKO" title=" SKO"> SKO</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization%20criterion" title=" optimization criterion"> optimization criterion</a> </p> <a href="https://publications.waset.org/abstracts/74618/periodic-topology-and-size-optimization-design-of-tower-crane-boom" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74618.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">554</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">477</span> Role of Gender in Apparel Stores' Consumer Review: A Sentiment Analysis </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarif%20Ullah%20Patwary">Sarif Ullah Patwary</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthew%20Heinrich"> Matthew Heinrich</a>, <a href="https://publications.waset.org/abstracts/search?q=Brandon%20Payne"> Brandon Payne</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ubiquity of web 2.0 platforms, in the form of wikis, social media (e.g., Facebook, Twitter, etc.) and online review portals (e.g., Yelp), helps shape today’s apparel consumers’ purchasing decision. Online reviews play important role towards consumers’ apparel purchase decision. Each of the consumer reviews carries a sentiment (positive, negative or neutral) towards products. Commercially, apparel brands and retailers analyze sentiment of this massive amount of consumer review data to update their inventory and bring new products in the market. The purpose of this study is to analyze consumer reviews of selected apparel stores with a view to understand, 1) the difference of sentiment expressed through men’s and woman’s text reviews, 2) the difference of sentiment expressed through men’s and woman’s star-based reviews, and 3) the difference of sentiment between star-based reviews and text-based reviews. A total of 9,363 reviews (1,713 men and 7,650 women) were collected using Yelp Dataset Challenge. Sentiment analysis of collected reviews was carried out in two dimensions: star-based reviews and text-based reviews. Sentiment towards apparel stores expressed through star-based reviews was deemed: 1) positive for 3 or 4 stars 2) negative for 1 or 2 stars and 3) neutral for 3 stars. Sentiment analysis of text-based reviews was carried out using Bing Liu dictionary. The analysis was conducted in IPyhton 5.0. Space. The sentiment analysis results revealed the percentage of positive text reviews by men (80%) and women (80%) were identical. Women reviewers (12%) provided more neutral (e.g., 3 out of 5 stars) star reviews than men (6%). Star-based reviews were more negative than the text-based reviews. In other words, while 80% men and women wrote positive reviews for the stores, less than 70% ended up giving 4 or 5 stars in those reviews. One of the key takeaways of the study is that star reviews provide slightly negative sentiment of the consumer reviews. Therefore, in order to understand sentiment towards apparel products, one might need to combine both star and text aspects of consumer reviews. This study used a specific dataset consisting of selected apparel stores from particular geographical locations (the information was not given for privacy concern). Future studies need to include more data from more stores and locations to generalize the findings of the study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=apparel" title="apparel">apparel</a>, <a href="https://publications.waset.org/abstracts/search?q=consumer%20review" title=" consumer review"> consumer review</a>, <a href="https://publications.waset.org/abstracts/search?q=sentiment%20analysis" title=" sentiment analysis"> sentiment analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=gender" title=" gender"> gender</a> </p> <a href="https://publications.waset.org/abstracts/101150/role-of-gender-in-apparel-stores-consumer-review-a-sentiment-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101150.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">164</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">476</span> Combination of Topology and Rough Set for Analysis of Power System Control</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Kamel%20El-Sayed">M. Kamel El-Sayed</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this research, we have linked the concept of rough set and topological structure to the creation of a new topological structure that assists in the analysis of the information systems of some electrical engineering issues. We used non-specific information whose boundaries do not have an empty set in the top topological structure is rough set. It is characterized by the fact that it does not contain a large number of elements and facilitates the establishment of rules. We used this structure in reducing the specifications of electrical information systems. We have provided a detailed example of this method illustrating the steps used. This method opens the door to obtaining multiple topologies, each of which uses one of the non-defined groups (rough set) in the overall information system. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electrical%20engineering" title="electrical engineering">electrical engineering</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20system" title=" information system"> information system</a>, <a href="https://publications.waset.org/abstracts/search?q=rough%20set" title=" rough set"> rough set</a>, <a href="https://publications.waset.org/abstracts/search?q=rough%20topology" title=" rough topology"> rough topology</a>, <a href="https://publications.waset.org/abstracts/search?q=topology" title=" topology"> topology</a> </p> <a href="https://publications.waset.org/abstracts/88084/combination-of-topology-and-rough-set-for-analysis-of-power-system-control" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/88084.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">453</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=star%20topology&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=star%20topology&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=star%20topology&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=star%20topology&page=5">5</a></li> <li class="page-item"><a class="page-link" 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