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conductance algorithm</title> <meta name="description" content="Search results for: incremental conductance algorithm"> <meta name="keywords" content="incremental conductance algorithm"> <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" /> 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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="incremental conductance algorithm"> <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> 3892</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: incremental conductance algorithm</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3892</span> A Variable Incremental Conductance MPPT Algorithm Applied to Photovoltaic Water Pumping System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sarah%20Abdourraziq">Sarah Abdourraziq</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachid%20Elbachtiri"> Rachid Elbachtiri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The use of solar energy as a source for pumping water is one of the promising areas in the photovoltaic (PV) application. The energy of photovoltaic pumping systems (PVPS) can be widely improved by employing an MPPT algorithm. This will lead consequently to maximize the electrical motor speed of the system. This paper presents a modified incremental conductance (IncCond) MPPT algorithm with direct control method applied to a standalone PV pumping system. The influence of the algorithm parameters on system behavior is investigated and compared with the traditional (INC) method. The studied system consists of a PV panel, a DC-DC boost converter, and a PMDC motor-pump. The simulation of the system by MATLAB-SIMULINK is carried out. Simulation results found are satisfactory. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20pumping%20system%20%28PVPS%29" title="photovoltaic pumping system (PVPS)">photovoltaic pumping system (PVPS)</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance%20%28INC%29" title=" incremental conductance (INC)"> incremental conductance (INC)</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT%20algorithm" title=" MPPT algorithm"> MPPT algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=boost%20converter" title=" boost converter"> boost converter</a> </p> <a href="https://publications.waset.org/abstracts/39379/a-variable-incremental-conductance-mppt-algorithm-applied-to-photovoltaic-water-pumping-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/39379.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">400</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3891</span> Design and Implementation of DC-DC Converter with Inc-Cond Algorithm </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mustafa%20Engin%20Ba%C5%9Fo%C4%9Flu">Mustafa Engin Başoğlu</a>, <a href="https://publications.waset.org/abstracts/search?q=Bekir%20%C3%87ak%C4%B1r"> Bekir Çakır</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The most important component affecting the efficiency of photovoltaic power systems are solar panels. Efficiency of these systems are significantly affected because of being low efficiency of solar panel. Therefore, solar panels should be operated under maximum power point conditions through a power converter. In this study, design boost converter with maximum power point tracking (MPPT) operation has been designed and performed with Incremental Conductance (Inc-Cond) algorithm by using direct duty control. Furthermore, it is shown that performance of boost converter with MPPT operation fails under low load resistance connection. <p class="card-text"><strong>Keywords:</strong> <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=incremental%20conductance%20%28Inc-Cond%29" title=" incremental conductance (Inc-Cond)"> incremental conductance (Inc-Cond)</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT" title=" MPPT"> MPPT</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20panel" title=" solar panel"> solar panel</a> </p> <a href="https://publications.waset.org/abstracts/18408/design-and-implementation-of-dc-dc-converter-with-inc-cond-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18408.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">1046</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">3890</span> Comparison between the Conventional Methods and PSO Based MPPT Algorithm for Photovoltaic Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ramdan%20B.%20A.%20Koad">Ramdan B. A. Koad</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20F.%20Zobaa"> Ahmed F. Zobaa</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since the output characteristics of Photovoltaic (PV) system depends on the ambient temperature, solar radiation and load impedance, its maximum Power Point (MPP) is not constant. Under each condition PV module has a point at which it can produce its MPP. Therefore, a Maximum Power Point Tracking (MPPT) method is needed to uphold the PV panel operating at its MPP. This paper presents comparative study between the conventional MPPT methods used in (PV) system: Perturb and Observe (P&O), Incremental Conductance (IncCond), and Particle Swarm Optimization (PSO) algorithm for (MPPT) of (PV) system. To evaluate the study, the proposed PSO MPPT is implemented on a DC-DC converter and has been compared with P&O and INcond methods in terms of their tracking speed, accuracy and performance by using the Matlab tool Simulink. The simulation result shows that the proposed algorithm is simple, and is superior to the P&O and IncCond methods. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20systems" title="photovoltaic systems">photovoltaic systems</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point%20tracking" title=" maximum power point tracking"> maximum power point tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20method" title=" perturb and observe method"> perturb and observe method</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance" title=" incremental conductance"> incremental conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=methods%20and%20practical%20swarm%20optimization%20algorithm" title=" methods and practical swarm optimization algorithm"> methods and practical swarm optimization algorithm</a> </p> <a href="https://publications.waset.org/abstracts/6085/comparison-between-the-conventional-methods-and-pso-based-mppt-algorithm-for-photovoltaic-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/6085.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">358</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">3889</span> Implementation of MPPT Algorithm for Grid Connected PV Module with IC and P&O Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arvind%20Kumar">Arvind Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Manoj%20Kumar"> Manoj Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Dattatraya%20H.%20Nagaraj"> Dattatraya H. Nagaraj</a>, <a href="https://publications.waset.org/abstracts/search?q=Amanpreet%20Singh"> Amanpreet Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Jayanthi%20Prattapati"> Jayanthi Prattapati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In recent years, the use of renewable energy resources instead of pollutant fossil fuels and other forms has increased. Photovoltaic generation is becoming increasingly important as a renewable resource since it does not cause in fuel costs, pollution, maintenance, and emitting noise compared with other alternatives used in power applications. In this paper, Perturb and Observe and Incremental Conductance methods are used to improve energy conversion efficiency under different environmental conditions. PI controllers are used to control easily DC-link voltage, active and reactive currents. The whole system is simulated under standard climatic conditions (1000 W/m2, 250C) in MATLAB and the irradiance is varied from 1000 W/m2 to 300 W/m2. The use of PI controller makes it easy to directly control the power of the grid connected PV system. Finally the validity of the system will be verified through the simulations in MATLAB/Simulink environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance%20algorithm" title="incremental conductance algorithm">incremental conductance algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=modeling%20of%20PV%20panel" title=" modeling of PV panel"> modeling of PV panel</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20algorithm" title=" perturb and observe algorithm"> perturb and observe algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20system%20and%20simulation%20results" title=" photovoltaic system and simulation results"> photovoltaic system and simulation results</a> </p> <a href="https://publications.waset.org/abstracts/11193/implementation-of-mppt-algorithm-for-grid-connected-pv-module-with-ic-and-po-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11193.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">509</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">3888</span> Comparative Study of IC and Perturb and Observe Method of MPPT Algorithm for Grid Connected PV Module</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arvind%20Kumar">Arvind Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Manoj%20Kumar"> Manoj Kumar</a>, <a href="https://publications.waset.org/abstracts/search?q=Dattatraya%20H.%20Nagaraj"> Dattatraya H. Nagaraj</a>, <a href="https://publications.waset.org/abstracts/search?q=Amanpreet%20Singh"> Amanpreet Singh</a>, <a href="https://publications.waset.org/abstracts/search?q=Jayanthi%20Prattapati"> Jayanthi Prattapati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is to study and compare two maximum power point tracking (MPPT) algorithms in a photovoltaic simulation system and also show a simulation study of maximum power point tracking (MPPT) for photovoltaic systems using perturb and observe algorithm and Incremental conductance algorithm. Maximum power point tracking (MPPT) plays an important role in photovoltaic systems because it maximize the power output from a PV system for a given set of conditions, and therefore maximize the array efficiency and minimize the overall system cost. Since the maximum power point (MPP) varies, based on the irradiation and cell temperature, appropriate algorithms must be utilized to track the (MPP) and maintain the operation of the system in it. MATLAB/Simulink is used to establish a model of photovoltaic system with (MPPT) function. This system is developed by combining the models established of solar PV module and DC-DC Boost converter. The system is simulated under different climate conditions. Simulation results show that the photovoltaic simulation system can track the maximum power point accurately. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance%20algorithm" title="incremental conductance algorithm">incremental conductance algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20algorithm" title=" perturb and observe algorithm"> perturb and observe algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20system" title=" photovoltaic system"> photovoltaic system</a>, <a href="https://publications.waset.org/abstracts/search?q=simulation%20results" title=" simulation results"> simulation results</a> </p> <a href="https://publications.waset.org/abstracts/11451/comparative-study-of-ic-and-perturb-and-observe-method-of-mppt-algorithm-for-grid-connected-pv-module" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11451.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">556</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">3887</span> Evaluation of Photovoltaic System with Different Research Methods of Maximum Power Point Tracking </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Ameur">Mehdi Ameur</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Essadki"> Ahmed Essadki</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamou%20Nasser"> Tamou Nasser</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is the evaluation of photovoltaic system with MPPT techniques. This system is developed by combining the models of established solar module and DC-DC converter with the algorithms of perturbing and observing (P&O), incremental conductance (INC) and fuzzy logic controller (FLC). The system is simulated under different climate conditions and MPPT algorithms to determine the influence of these conditions on characteristic power-voltage of PV system. According to the comparisons of the simulation results, the photovoltaic system can extract the maximum power with precision and rapidity using the MPPT algorithms discussed in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic%20controller" title="fuzzy logic controller">fuzzy logic controller</a>, <a href="https://publications.waset.org/abstracts/search?q=FLC" title=" FLC"> FLC</a>, <a href="https://publications.waset.org/abstracts/search?q=hill%20climbing" title=" hill climbing"> hill climbing</a>, <a href="https://publications.waset.org/abstracts/search?q=HC" title=" HC"> HC</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance%20%28INC%29" title=" incremental conductance (INC)"> incremental conductance (INC)</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20%28P%26O%29" title=" perturb and observe (P&O)"> perturb and observe (P&O)</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point" title=" maximum power point"> maximum power point</a>, <a href="https://publications.waset.org/abstracts/search?q=MPP" title=" MPP"> MPP</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point%20tracking" title=" maximum power point tracking"> maximum power point tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT" title=" MPPT"> MPPT</a> </p> <a href="https://publications.waset.org/abstracts/12073/evaluation-of-photovoltaic-system-with-different-research-methods-of-maximum-power-point-tracking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/12073.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">511</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">3886</span> Modified 'Perturb and Observe' with 'Incremental Conductance' Algorithm for Maximum Power Point Tracking</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20Fuad%20Usman">H. Fuad Usman</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Rafay%20Khan%20Sial"> M. Rafay Khan Sial</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahzaib%20Hamid"> Shahzaib Hamid</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The trend of renewable energy resources has been amplified due to global warming and other environmental related complications in the 21st century. Recent research has very much emphasized on the generation of electrical power through renewable resources like solar, wind, hydro, geothermal, etc. The use of the photovoltaic cell has become very public as it is very useful for the domestic and commercial purpose overall the world. Although a single cell gives the low voltage output but connecting a number of cells in a series formed a complete module of the photovoltaic cells, it is becoming a financial investment as the use of it fetching popular. This also reduced the prices of the photovoltaic cell which gives the customers a confident of using this source for their electrical use. Photovoltaic cell gives the MPPT at single specific point of operation at a given temperature and level of solar intensity received at a given surface whereas the focal point changes over a large range depending upon the manufacturing factor, temperature conditions, intensity for insolation, instantaneous conditions for shading and aging factor for the photovoltaic cells. Two improved algorithms have been proposed in this article for the MPPT. The widely used algorithms are the ‘Incremental Conductance’ and ‘Perturb and Observe’ algorithms. To extract the maximum power from the source to the load, the duty cycle of the convertor will be effectively controlled. After assessing the previous techniques, this paper presents the improved and reformed idea of harvesting maximum power point from the photovoltaic cells. A thoroughly go through of the previous ideas has been observed before constructing the improvement in the traditional technique of MPP. Each technique has its own importance and boundaries at various weather conditions. An improved technique of implementing the use of both ‘Perturb and Observe’ and ‘Incremental Conductance’ is introduced. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=duty%20cycle" title="duty cycle">duty cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT%20%28Maximum%20Power%20Point%20Tracking%29" title=" MPPT (Maximum Power Point Tracking)"> MPPT (Maximum Power Point Tracking)</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20%28P%26O%29" title=" perturb and observe (P&O)"> perturb and observe (P&O)</a>, <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20module" title=" photovoltaic module"> photovoltaic module</a> </p> <a href="https://publications.waset.org/abstracts/78799/modified-perturb-and-observe-with-incremental-conductance-algorithm-for-maximum-power-point-tracking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78799.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">176</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">3885</span> Analysis and Modeling of Photovoltaic System with Different Research Methods of Maximum Power Point Tracking</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mehdi%20Ameur">Mehdi Ameur</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Essakdi"> Ahmed Essakdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamou%20Nasser"> Tamou Nasser</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is the analysis and modeling of the photovoltaic system with MPPT techniques. This system is developed by combining the models of established solar module and DC-DC converter with the algorithms of perturb and observe (P&O), incremental conductance (INC) and fuzzy logic controller(FLC). The system is simulated under different climate conditions and MPPT algorithms to determine the influence of these conditions on characteristic power-voltage of PV system. According to the comparisons of the simulation results, the photovoltaic system can extract the maximum power with precision and rapidity using the MPPT algorithms discussed in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20array" title="photovoltaic array">photovoltaic array</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20power%20point%20tracking" title=" maximum power point tracking"> maximum power point tracking</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT" title=" MPPT"> MPPT</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe" title=" perturb and observe"> perturb and observe</a>, <a href="https://publications.waset.org/abstracts/search?q=P%26O" title=" P&O"> P&O</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance" title=" incremental conductance"> incremental conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=INC" title=" INC"> INC</a>, <a href="https://publications.waset.org/abstracts/search?q=hill%20climbing" title=" hill climbing"> hill climbing</a>, <a href="https://publications.waset.org/abstracts/search?q=HC" title=" HC"> HC</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic%20controller" title=" fuzzy logic controller"> fuzzy logic controller</a>, <a href="https://publications.waset.org/abstracts/search?q=FLC" title=" FLC"> FLC</a> </p> <a href="https://publications.waset.org/abstracts/11862/analysis-and-modeling-of-photovoltaic-system-with-different-research-methods-of-maximum-power-point-tracking" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11862.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">429</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3884</span> Evaluation of MPPT Algorithms for Photovoltaic Generator by Comparing Incremental Conductance Method, Perturbation and Observation Method and the Method Using Fuzzy Logic</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Elmahdi%20Elgharbaoui">Elmahdi Elgharbaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamou%20Nasser"> Tamou Nasser</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20Essadki"> Ahmed Essadki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the era of sustainable development, photovoltaic (PV) technology has shown significant potential as a renewable energy source. Photovoltaic generators (GPV) have a non-linear current-voltage characteristic, with a maximum power point (MPP) characterized by an optimal voltage, and depends on environmental factors such as temperature and irradiation. To extract each time the maximum power available at the terminals of the GPV and transfer it to the load, an adaptation stage is used, consisting of a boost chopper controlled by a maximum power point tracking technique (MPPT) through a stage of pulse width modulation (PWM). Our choice has focused on three techniques which are: the perturbation and observation method (P&O), the incremental conductance method (InCond) and the last is that of control using the fuzzy logic. The implementation and simulation of the system (photovoltaic generator, chopper boost, PWM and MPPT techniques) are then performed in the Matlab/Simulink environment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20generator" title="photovoltaic generator">photovoltaic generator</a>, <a href="https://publications.waset.org/abstracts/search?q=technique%20MPPT" title=" technique MPPT"> technique MPPT</a>, <a href="https://publications.waset.org/abstracts/search?q=boost%20chopper" title=" boost chopper"> boost chopper</a>, <a href="https://publications.waset.org/abstracts/search?q=PWM" title=" PWM"> PWM</a>, <a href="https://publications.waset.org/abstracts/search?q=fuzzy%20logic" title=" fuzzy logic"> fuzzy logic</a>, <a href="https://publications.waset.org/abstracts/search?q=P%26O" title=" P&O"> P&O</a>, <a href="https://publications.waset.org/abstracts/search?q=InCond" title=" InCond"> InCond</a> </p> <a href="https://publications.waset.org/abstracts/11368/evaluation-of-mppt-algorithms-for-photovoltaic-generator-by-comparing-incremental-conductance-method-perturbation-and-observation-method-and-the-method-using-fuzzy-logic" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11368.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">323</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">3883</span> Indexing and Incremental Approach Using Map Reduce Bipartite Graph (MRBG) for Mining Evolving Big Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adarsh%20Shroff">Adarsh Shroff</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Big data is a collection of dataset so large and complex that it becomes difficult to process using data base management tools. To perform operations like search, analysis, visualization on big data by using data mining; which is the process of extraction of patterns or knowledge from large data set. In recent years, the data mining applications become stale and obsolete over time. Incremental processing is a promising approach to refreshing mining results. It utilizes previously saved states to avoid the expense of re-computation from scratch. This project uses i2MapReduce, an incremental processing extension to Map Reduce, the most widely used framework for mining big data. I2MapReduce performs key-value pair level incremental processing rather than task level re-computation, supports not only one-step computation but also more sophisticated iterative computation, which is widely used in data mining applications, and incorporates a set of novel techniques to reduce I/O overhead for accessing preserved fine-grain computation states. To optimize the mining results, evaluate i2MapReduce using a one-step algorithm and three iterative algorithms with diverse computation characteristics for efficient mining. <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=map%20reduce" title=" map reduce"> map reduce</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20processing" title=" incremental processing"> incremental processing</a>, <a href="https://publications.waset.org/abstracts/search?q=iterative%20computation" title=" iterative computation"> iterative computation</a> </p> <a href="https://publications.waset.org/abstracts/46413/indexing-and-incremental-approach-using-map-reduce-bipartite-graph-mrbg-for-mining-evolving-big-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46413.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">350</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">3882</span> Efficient Recommendation System for Frequent and High Utility Itemsets over Incremental Datasets</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20K.%20Kavitha">J. K. Kavitha</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Manjula"> D. Manjula</a>, <a href="https://publications.waset.org/abstracts/search?q=U.%20Kanimozhi"> U. Kanimozhi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Mining frequent and high utility item sets have gained much significance in the recent years. When the data arrives sporadically, incremental and interactive rule mining and utility mining approaches can be adopted to handle user’s dynamic environmental needs and avoid redundancies, using previous data structures, and mining results. The dependence on recommendation systems has exponentially risen since the advent of search engines. This paper proposes a model for building a recommendation system that suggests frequent and high utility item sets over dynamic datasets for a cluster based location prediction strategy to predict user’s trajectories using the Efficient Incremental Rule Mining (EIRM) algorithm and the Fast Update Utility Pattern Tree (FUUP) algorithm. Through comprehensive evaluations by experiments, this scheme has shown to deliver excellent performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=data%20sets" title="data sets">data sets</a>, <a href="https://publications.waset.org/abstracts/search?q=recommendation%20system" title=" recommendation system"> recommendation system</a>, <a href="https://publications.waset.org/abstracts/search?q=utility%20item%20sets" title=" utility item sets"> utility item sets</a>, <a href="https://publications.waset.org/abstracts/search?q=frequent%20item%20sets%20mining" title=" frequent item sets mining"> frequent item sets mining</a> </p> <a href="https://publications.waset.org/abstracts/47560/efficient-recommendation-system-for-frequent-and-high-utility-itemsets-over-incremental-datasets" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47560.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">293</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">3881</span> Incremental Learning of Independent Topic Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Takahiro%20Nishigaki">Takahiro Nishigaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Katsumi%20Nitta"> Katsumi Nitta</a>, <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Onoda"> Takashi Onoda</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, we present a method of applying Independent Topic Analysis (ITA) to increasing the number of document data. The number of document data has been increasing since the spread of the Internet. ITA was presented as one method to analyze the document data. ITA is a method for extracting the independent topics from the document data by using the Independent Component Analysis (ICA). ICA is a technique in the signal processing; however, it is difficult to apply the ITA to increasing number of document data. Because ITA must use the all document data so temporal and spatial cost is very high. Therefore, we present Incremental ITA which extracts the independent topics from increasing number of document data. Incremental ITA is a method of updating the independent topics when the document data is added after extracted the independent topics from a just previous the data. In addition, Incremental ITA updates the independent topics when the document data is added. And we show the result applied Incremental ITA to benchmark datasets. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=text%20mining" title="text mining">text mining</a>, <a href="https://publications.waset.org/abstracts/search?q=topic%20extraction" title=" topic extraction"> topic extraction</a>, <a href="https://publications.waset.org/abstracts/search?q=independent" title=" independent"> independent</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental" title=" incremental"> incremental</a>, <a href="https://publications.waset.org/abstracts/search?q=independent%20component%20analysis" title=" independent component analysis"> independent component analysis</a> </p> <a href="https://publications.waset.org/abstracts/58971/incremental-learning-of-independent-topic-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/58971.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">309</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">3880</span> A Parallel Approach for 3D-Variational Data Assimilation on GPUs in Ocean Circulation Models</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rossella%20Arcucci">Rossella Arcucci</a>, <a href="https://publications.waset.org/abstracts/search?q=Luisa%20D%27Amore"> Luisa D'Amore</a>, <a href="https://publications.waset.org/abstracts/search?q=Simone%20Celestino"> Simone Celestino</a>, <a href="https://publications.waset.org/abstracts/search?q=Giuseppe%20Scotti"> Giuseppe Scotti</a>, <a href="https://publications.waset.org/abstracts/search?q=Giuliano%20Laccetti"> Giuliano Laccetti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is the first dowel in a rather wide research activity in collaboration with Euro Mediterranean Center for Climate Changes, aimed at introducing scalable approaches in Ocean Circulation Models. We discuss designing and implementation of a parallel algorithm for solving the Variational Data Assimilation (DA) problem on Graphics Processing Units (GPUs). The algorithm is based on the fully scalable 3DVar DA model, previously proposed by the authors, which uses a Domain Decomposition approach (we refer to this model as the DD-DA model). We proceed with an incremental porting process consisting of 3 distinct stages: requirements and source code analysis, incremental development of CUDA kernels, testing and optimization. Experiments confirm the theoretic performance analysis based on the so-called scale up factor demonstrating that the DD-DA model can be suitably mapped on GPU architectures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=data%20assimilation" title="data assimilation">data assimilation</a>, <a href="https://publications.waset.org/abstracts/search?q=GPU%20architectures" title=" GPU architectures"> GPU architectures</a>, <a href="https://publications.waset.org/abstracts/search?q=ocean%20models" title=" ocean models"> ocean models</a>, <a href="https://publications.waset.org/abstracts/search?q=parallel%20algorithm" title=" parallel algorithm"> parallel algorithm</a> </p> <a href="https://publications.waset.org/abstracts/29397/a-parallel-approach-for-3d-variational-data-assimilation-on-gpus-in-ocean-circulation-models" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29397.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">412</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">3879</span> A Comparative Study of the Maximum Power Point Tracking Methods for PV Systems Using Boost Converter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Doumi">M. Doumi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20Miloudi"> A. Miloudi</a>, <a href="https://publications.waset.org/abstracts/search?q=A.G.%20Aissaoui"> A.G. Aissaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Tahir"> K. Tahir</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Belfedal"> C. Belfedal</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Tahir"> S. Tahir</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The studies on the photovoltaic system are extensively increasing because of a large, secure, essentially exhaustible and broadly available resource as a future energy supply. However, the output power induced in the photovoltaic modules is influenced by an intensity of solar cell radiation, temperature of the solar cells and so on. Therefore, to maximize the efficiency of the photovoltaic system, it is necessary to track the maximum power point of the PV array, for this Maximum Power Point Tracking (MPPT) technique is used. These algorithms are based on the Perturb-Observe, Conductance-Increment and the Fuzzy Logic methods. These techniques vary in many aspects as: simplicity, convergence speed, digital or analogical implementation, sensors required, cost, range of effectiveness, and in other aspects. This paper presents a comparative study of three widely-adopted MPPT algorithms; their performance is evaluated on the energy point of view, by using the simulation tool Simulink®, considering different solar irradiance variations. MPPT using fuzzy logic shows superior performance and more reliable control to the other methods for this application. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=photovoltaic%20system" title="photovoltaic system">photovoltaic system</a>, <a href="https://publications.waset.org/abstracts/search?q=MPPT" title=" MPPT"> MPPT</a>, <a href="https://publications.waset.org/abstracts/search?q=perturb%20and%20observe%20%28P%26O%29" title=" perturb and observe (P&O)"> perturb and observe (P&O)</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20conductance%20%28INC%29" title=" incremental conductance (INC)"> incremental conductance (INC)</a>, <a href="https://publications.waset.org/abstracts/search?q=Fuzzy%20Logic%20%28FLC%29" title=" Fuzzy Logic (FLC)"> Fuzzy Logic (FLC)</a> </p> <a href="https://publications.waset.org/abstracts/13973/a-comparative-study-of-the-maximum-power-point-tracking-methods-for-pv-systems-using-boost-converter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13973.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">411</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">3878</span> A Comparison of Single Point Incremental Forming Formability between Carbon Steel and Stainless Steel</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kittiphat%20Rattanachan">Kittiphat Rattanachan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The sheet metal forming process, the raw material mechanical properties are important parameters. This paper is to compare the wall’s incline angle or formability of SS 400 steel and SUS 304 stainless steel in single point incremental forming. The two materials are ferrous base alloy, which have the different cell unit, mechanical property and chemical composition. They were forming into cone shape specimens 100 mm diameter with different wall’s incline angle: 90o, 75o, and 60o. The investigation, the specimens were forming until the surface fracture was occurred. The experimental result showed that both materials with the smaller wall’s incline angle, the higher formability. The formability limited of the ferrous base alloy was approx. 60o wall’s incline angle. By nature, SS 400 was higher formability than SUS 304. This result could be used as the initial utilized data in designing the single point incremental forming parts. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NC%20incremental%20forming" title="NC incremental forming">NC incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20point%20incremental%20forming" title=" single point incremental forming"> single point incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=wall%20incline%20angle" title=" wall incline angle"> wall incline angle</a>, <a href="https://publications.waset.org/abstracts/search?q=formability" title=" formability"> formability</a> </p> <a href="https://publications.waset.org/abstracts/11732/a-comparison-of-single-point-incremental-forming-formability-between-carbon-steel-and-stainless-steel" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11732.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">344</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">3877</span> An Adaptive Distributed Incremental Association Rule Mining System </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Adewale%20O.%20Ogunde">Adewale O. Ogunde</a>, <a href="https://publications.waset.org/abstracts/search?q=Olusegun%20Folorunso"> Olusegun Folorunso</a>, <a href="https://publications.waset.org/abstracts/search?q=Adesina%20S.%20Sodiya"> Adesina S. Sodiya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Most existing Distributed Association Rule Mining (DARM) systems are still facing several challenges. One of such challenges that have not received the attention of many researchers is the inability of existing systems to adapt to constantly changing databases and mining environments. In this work, an Adaptive Incremental Mining Algorithm (AIMA) is therefore proposed to address these problems. AIMA employed multiple mobile agents for the entire mining process. AIMA was designed to adapt to changes in the distributed databases by mining only the incremental database updates and using this to update the existing rules in order to improve the overall response time of the DARM system. In AIMA, global association rules were integrated incrementally from one data site to another through Results Integration Coordinating Agents. The mining agents in AIMA were made adaptive by defining mining goals with reasoning and behavioral capabilities and protocols that enabled them to either maintain or change their goals. AIMA employed Java Agent Development Environment Extension for designing the internal agents’ architecture. Results from experiments conducted on real datasets showed that the adaptive system, AIMA performed better than the non-adaptive systems with lower communication costs and higher task completion rates. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adaptivity" title="adaptivity">adaptivity</a>, <a href="https://publications.waset.org/abstracts/search?q=data%20mining" title=" data mining"> data mining</a>, <a href="https://publications.waset.org/abstracts/search?q=distributed%20association%20rule%20mining" title=" distributed association rule mining"> distributed association rule mining</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20mining" title=" incremental mining"> incremental mining</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20agents" title=" mobile agents"> mobile agents</a> </p> <a href="https://publications.waset.org/abstracts/10014/an-adaptive-distributed-incremental-association-rule-mining-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10014.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">393</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">3876</span> The Impact of Total Quality Management Practices on Innovation: An Empirical Study</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Oumayma%20Tajouri">Oumayma Tajouri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The relationship between total quality management (TQM) practices and innovation is conflictual. Some scholars suggest that TQM has an effect on incremental improvement and would not lead to innovation and creativity. The purpose of this paper is to analyse the association between TQM and different types of innovation. Our goal is to examine to what extent the implementation of TQM practices is indeed supporting innovation in the Tunisian ISO 9001 certified industries. Using a self-administered survey to sample ISO9001 certified industry companies, this study examines five hypotheses and tests the relation between TQM practices and innovation. The principal finding of this study is that TQM has significant and positive effects on innovation in the Tunisian context. The results support that TQM has an influence on incremental, radical, and administrative innovation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=total%20quality%20management" title="total quality management">total quality management</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20innovation%20product%20and%2Fservice" title=" incremental innovation product and/service"> incremental innovation product and/service</a>, <a href="https://publications.waset.org/abstracts/search?q=radical%20innovation%20%20product%2Fservice" title=" radical innovation product/service"> radical innovation product/service</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20innovation%20process" title=" incremental innovation process"> incremental innovation process</a>, <a href="https://publications.waset.org/abstracts/search?q=radical%20innovation%20%20process" title=" radical innovation process"> radical innovation process</a>, <a href="https://publications.waset.org/abstracts/search?q=administrative%20innovation" title=" administrative innovation"> administrative innovation</a> </p> <a href="https://publications.waset.org/abstracts/147719/the-impact-of-total-quality-management-practices-on-innovation-an-empirical-study" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147719.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">158</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">3875</span> Relevance Feedback within CBIR Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mawloud%20Mosbah">Mawloud Mosbah</a>, <a href="https://publications.waset.org/abstracts/search?q=Bachir%20Boucheham"> Bachir Boucheham</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present here the results for a comparative study of some techniques, available in the literature, related to the relevance feedback mechanism in the case of a short-term learning. Only one method among those considered here is belonging to the data mining field which is the K-Nearest Neighbours Algorithm (KNN) while the rest of the methods is related purely to the information retrieval field and they fall under the purview of the following three major axes: Shifting query, Feature Weighting and the optimization of the parameters of similarity metric. As a contribution, and in addition to the comparative purpose, we propose a new version of the KNN algorithm referred to as an incremental KNN which is distinct from the original version in the sense that besides the influence of the seeds, the rate of the actual target image is influenced also by the images already rated. The results presented here have been obtained after experiments conducted on the Wang database for one iteration and utilizing colour moments on the RGB space. This compact descriptor, Colour Moments, is adequate for the efficiency purposes needed in the case of interactive systems. The results obtained allow us to claim that the proposed algorithm proves good results; it even outperforms a wide range of techniques available in the literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CBIR" title="CBIR">CBIR</a>, <a href="https://publications.waset.org/abstracts/search?q=category%20search" title=" category search"> category search</a>, <a href="https://publications.waset.org/abstracts/search?q=relevance%20feedback" title=" relevance feedback"> relevance feedback</a>, <a href="https://publications.waset.org/abstracts/search?q=query%20point%20movement" title=" query point movement"> query point movement</a>, <a href="https://publications.waset.org/abstracts/search?q=standard%20Rocchio%E2%80%99s%20formula" title=" standard Rocchio’s formula"> standard Rocchio’s formula</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20shifting%20query" title=" adaptive shifting query"> adaptive shifting query</a>, <a href="https://publications.waset.org/abstracts/search?q=feature%20weighting" title=" feature weighting"> feature weighting</a>, <a href="https://publications.waset.org/abstracts/search?q=original%20KNN" title=" original KNN"> original KNN</a>, <a href="https://publications.waset.org/abstracts/search?q=incremental%20KNN" title=" incremental KNN"> incremental KNN</a> </p> <a href="https://publications.waset.org/abstracts/7872/relevance-feedback-within-cbir-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7872.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">280</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">3874</span> Considering the Reliability of Measurements Issue in Distributed Adaptive Estimation Algorithms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Wael%20M.%20Bazzi">Wael M. Bazzi</a>, <a href="https://publications.waset.org/abstracts/search?q=Amir%20Rastegarnia"> Amir Rastegarnia</a>, <a href="https://publications.waset.org/abstracts/search?q=Azam%20Khalili"> Azam Khalili</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper we consider the issue of reliability of measurements in distributed adaptive estimation problem. To this aim, we assume a sensor network with different observation noise variance among the sensors and propose new estimation method based on incremental distributed least mean-square (IDLMS) algorithm. The proposed method contains two phases: I) Estimation of each sensors observation noise variance, and II) Estimation of the desired parameter using the estimated observation variances. To deal with the reliability of measurements, in the second phase of the proposed algorithm, the step-size parameter is adjusted for each sensor according to its observation noise variance. As our simulation results show, the proposed algorithm considerably improves the performance of the IDLMS algorithm in the same condition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adaptive%20filter" title="adaptive filter">adaptive filter</a>, <a href="https://publications.waset.org/abstracts/search?q=distributed%20estimation" title=" distributed estimation"> distributed estimation</a>, <a href="https://publications.waset.org/abstracts/search?q=sensor%0D%0Anetwork" title=" sensor network"> sensor network</a>, <a href="https://publications.waset.org/abstracts/search?q=IDLMS%20algorithm" title=" IDLMS algorithm"> IDLMS algorithm</a> </p> <a href="https://publications.waset.org/abstracts/27648/considering-the-reliability-of-measurements-issue-in-distributed-adaptive-estimation-algorithms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27648.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">634</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">3873</span> Experimental and Simulation Stress Strain Comparison of Hot Single Point Incremental Forming</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Amar%20Al-Obaidi">Amar Al-Obaidi</a>, <a href="https://publications.waset.org/abstracts/search?q=Verena%20Kr%C3%A4usel"> Verena Kräusel</a>, <a href="https://publications.waset.org/abstracts/search?q=Dirk%20Landgrebe"> Dirk Landgrebe</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Induction assisted single point incremental forming (IASPIF) is a flexible method and can be simply utilized to form a high strength alloys. Due to the interaction between the mechanical and thermal properties during IASPIF an evaluation for the process is necessary to be performed analytically. Therefore, a numerical simulation was carried out in this paper. The numerical analysis was operated at both room and elevated temperatures then compared with experimental results. Fully coupled dynamic temperature displacement explicit analysis was used to simulated the hot single point incremental forming. The numerical analysis was indicating that during hot single point incremental forming were a combination between complicated compression, tension and shear stresses. As a result, the equivalent plastic strain was increased excessively by rising both the formed part depth and the heating temperature during forming. Whereas, the forming forces were decreased from 5 kN at room temperature to 0.95 kN at elevated temperature. The simulation shows that the maximum true strain was occurred in the stretching zone which was the same as in experiment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=induction%20heating" title="induction heating">induction heating</a>, <a href="https://publications.waset.org/abstracts/search?q=single%20point%20incremental%20forming" title=" single point incremental forming"> single point incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=FE%20modeling" title=" FE modeling"> FE modeling</a>, <a href="https://publications.waset.org/abstracts/search?q=advanced%20high%20strength%20steel" title=" advanced high strength steel"> advanced high strength steel</a> </p> <a href="https://publications.waset.org/abstracts/82765/experimental-and-simulation-stress-strain-comparison-of-hot-single-point-incremental-forming" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/82765.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">208</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">3872</span> Leaf Photosynthesis and Water-Use Efficiency of Diverse Legume Species Nodulated by Native Rhizobial Isolates in the Glasshouse</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Lebogang%20Jane%20Msiza">Lebogang Jane Msiza</a>, <a href="https://publications.waset.org/abstracts/search?q=Felix%20Dapare%20Dakora"> Felix Dapare Dakora</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Photosynthesis is a process by which plants convert light energy to chemical energy for metabolic processes. Plants are known for converting inorganic CO₂ in the atmosphere to organic C by photosynthesis. A decrease in stomatal conductance causes a decrease in the transpiration rate of leaves, thus increasing the water-use efficiency of plants. Water-use efficiency in plants is conditioned by soil moisture availability and is enhanced under conditions of water deficit. This study evaluated leaf photosynthesis and water-use efficiency in 12 legume species inoculated with 26 rhizobial isolates from soybean, 15 from common bean, 10 from cowpea, 15 from Bambara groundnut, 7 from lessertia and 10 from Kersting bean. Gas-exchange studies were used to measure photosynthesis and water-use efficiency. The results revealed a much higher photosynthetic rate (20.95µmol CO₂ m-2s-1) induced by isolated tutpres to a lower rate (7.06 µmol CO₂ m-2s-1) by isolate mgsa 88. Stomatal conductance ranged from to 0.01 mmol m-2.s-1 by mgsa 88 to 0.12 mmol m-2.s-1 by isolate da-pua 128. Transpiration rate also ranged from 0.09 mmol m-2.s-1 induced by da-pua B2 to 3.28 mmol m-2.s-1 by da-pua 3, while water-use efficiency ranged from 91.32 µmol CO₂ m-1 H₂O elicited by mgsa 106 to 4655.50 µmol CO₂ m-1 H₂O by isolate tutswz 13. The results revealed the highest photosynthetic rate in soybean and the lowest in common bean, and also with higher stomatal conductance and transpiration rates in jack bean and Bambara groundnut. Pigeonpea exhibited much higher water-use efficiency than all the tested legumes. The findings showed significant differences between and among the test legume/rhizobia combinations. Leaf photosynthetic rates are reported to be higher in legumes with high stomatal conductance, which suggests that legume productivity can be improved by manipulating leaf stomatal conductance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=legumes" title="legumes">legumes</a>, <a href="https://publications.waset.org/abstracts/search?q=photosynthetic%20rate" title=" photosynthetic rate"> photosynthetic rate</a>, <a href="https://publications.waset.org/abstracts/search?q=stomatal%20conductance" title=" stomatal conductance"> stomatal conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=water-use%20efficiency" title=" water-use efficiency"> water-use efficiency</a> </p> <a href="https://publications.waset.org/abstracts/140474/leaf-photosynthesis-and-water-use-efficiency-of-diverse-legume-species-nodulated-by-native-rhizobial-isolates-in-the-glasshouse" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/140474.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">228</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">3871</span> Investigation of a Hybrid Process: Multipoint Incremental Forming</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Safa%20Boudhaouia">Safa Boudhaouia</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Amen%20Gahbiche"> Mohamed Amen Gahbiche</a>, <a href="https://publications.waset.org/abstracts/search?q=Eliane%20Giraud"> Eliane Giraud</a>, <a href="https://publications.waset.org/abstracts/search?q=Wacef%20Ben%20Salem"> Wacef Ben Salem</a>, <a href="https://publications.waset.org/abstracts/search?q=Philippe%20Dal%20Santo"> Philippe Dal Santo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Multi-point forming (MPF) and asymmetric incremental forming (ISF) are two flexible processes for sheet metal manufacturing. To take advantages of these two techniques, a hybrid process has been developed: The Multipoint Incremental Forming (MPIF). This process accumulates at once the advantages of each of these last mentioned forming techniques, which makes it a very interesting and particularly an efficient process for single, small, and medium series production. In this paper, an experimental and a numerical investigation of this technique are presented. To highlight the flexibility of this process and its capacity to manufacture standard and complex shapes, several pieces were produced by using MPIF. The forming experiments are performed on a 3-axis CNC machine. Moreover, a numerical model of the MPIF process has been implemented in ABAQUS and the analysis showed a good agreement with experimental results in terms of deformed shape. Furthermore, the use of an elastomeric interpolator allows avoiding classical local defaults like dimples, which are generally caused by the asymmetric contact and also improves the distribution of residual strain. Future works will apply this approach to other alloys used in aeronautic or automotive applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=incremental%20forming" title="incremental forming">incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=numerical%20simulation" title=" numerical simulation"> numerical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=MPIF" title=" MPIF"> MPIF</a>, <a href="https://publications.waset.org/abstracts/search?q=multipoint%20forming" title=" multipoint forming"> multipoint forming</a> </p> <a href="https://publications.waset.org/abstracts/51894/investigation-of-a-hybrid-process-multipoint-incremental-forming" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51894.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">356</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">3870</span> The Effects of Anapana Meditation Training Program Monitored by Skin Conductance and Temperature (SC/ST) Biofeedback on Stress in Bachelor’s Degree Students</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ormanee%20Patarathipakorn">Ormanee Patarathipakorn</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Stress was the major psychological problem that affecting to physical and mental health among undergraduate students. Aim of study was to determine the effective of meditation training program (MTP) for stress reduction measured by biofeedback (BB) machine. Material and Methods: This was quasi-experimental study conducted in Faculty of Dentistry, Thammasat University, Thailand. Study period was between August and December 2023. Participants were the first-year Dentistry students. MTP was concentration meditation (Anapana meditation). Stress measurement was evaluated by using Thai version perceived stress scale (T-PSS-10) was performed at one week before study, 14 and 18 weeks. Stress evaluation by biofeedback machine (skin conductance: SC and skin temperature: ST) were performed at one week before study, 4, 8, 14 and 18 weeks. Data from T-PSS-10 and SC/ST biofeedback were collected and analyzed. Results: A total of 28 subjects were recruited. The mean age of participant was 18.4 years old. Two-thirds (19/28) was female. Stress reduction from MTP was detected since 4 and 8 weeks by STBB and SCBB, respectively. T-PSS 10 scores before MTP, 14 and 18 weeks were 17.7± 5.4, 9.8 ± 3.1 and 8.4 ± 3.1 with statistical significance. Conclusion: Meditation training program could reduce stress and measured by skin conductance and temperature biofeedback. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=stress" title="stress">stress</a>, <a href="https://publications.waset.org/abstracts/search?q=meditation" title=" meditation"> meditation</a>, <a href="https://publications.waset.org/abstracts/search?q=biofeedback" title=" biofeedback"> biofeedback</a>, <a href="https://publications.waset.org/abstracts/search?q=student" title=" student"> student</a> </p> <a href="https://publications.waset.org/abstracts/189478/the-effects-of-anapana-meditation-training-program-monitored-by-skin-conductance-and-temperature-scst-biofeedback-on-stress-in-bachelors-degree-students" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/189478.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">37</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">3869</span> An Improved GA to Address Integrated Formulation of Project Scheduling and Material Ordering with Discount Options</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Babak%20H.%20Tabrizi">Babak H. Tabrizi</a>, <a href="https://publications.waset.org/abstracts/search?q=Seyed%20Farid%20Ghaderi"> Seyed Farid Ghaderi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Concurrent planning of the resource constraint project scheduling and material ordering problems have received significant attention within the last decades. Hence, the issue has been investigated here with the aim to minimize total project costs. Furthermore, the presented model considers different discount options in order to approach the real world conditions. The incorporated alternatives consist of all-unit and incremental discount strategies. On the other hand, a modified version of the genetic algorithm is applied in order to solve the model for larger sizes, in particular. Finally, the applicability and efficiency of the given model is tested by different numerical instances. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=genetic%20algorithm" title="genetic algorithm">genetic algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=material%20ordering" title=" material ordering"> material ordering</a>, <a href="https://publications.waset.org/abstracts/search?q=project%20management" title=" project management"> project management</a>, <a href="https://publications.waset.org/abstracts/search?q=project%20scheduling" title=" project scheduling"> project scheduling</a> </p> <a href="https://publications.waset.org/abstracts/51823/an-improved-ga-to-address-integrated-formulation-of-project-scheduling-and-material-ordering-with-discount-options" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/51823.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">302</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3868</span> Magnetic versus Non-Magnetic Adatoms in Graphene Nanoribbons: Tuning of Spintronic Applications and the Quantum Spin Hall Phase</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Saurabh%20Basu">Saurabh Basu</a>, <a href="https://publications.waset.org/abstracts/search?q=Sudin%20Ganguly"> Sudin Ganguly</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Conductance in graphene nanoribbons (GNR) in presence of magnetic (for example, Iron) and non-magnetic (for example, Gold) adatoms are explored theoretically within a Kane-Mele model for their possible spintronic applications and topologically non-trivial properties. In our work, we have considered the magnetic adatoms to induce a Rashba spin-orbit coupling (RSOC) and an exchange bias field, while the non-magnetic ones induce an RSOC and an intrinsic spin-orbit (SO) coupling. Even though RSOC is present in both, they, however, represent very different physical situations, where the magnetic adatoms do not preserve the time reversal symmetry, while the non-magnetic case does. This has important implications on the topological properties. For example, the non-magnetic adatoms, for moderately strong values of SO, the GNR denotes a quantum spin Hall insulator as evident from a 2e²/h plateau in the longitudinal conductance and presence of distinct conducting edge states with an insulating bulk. Since the edge states are protected by time reversal symmetry, the magnetic adatoms in GNR yield trivial insulators and do not possess any non-trivial topological property. However, they have greater utility than the non-magnetic adatoms from the point of view of spintronic applications. Owing to the broken spatial symmetry induced by the presence of adatoms of either type, all the x, y and z components of the spin-polarized conductance become non-zero (only the y-component survives in pristine Graphene owing to a mirror symmetry present there) and hence become suitable for spintronic applications. However, the values of the spin polarized conductances are at least two orders of magnitude larger in the case of magnetic adatoms than their non-magnetic counterpart, thereby ensuring more efficient spintronic applications. Further the applications are tunable by altering the adatom densities. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20and%20non-magnetic%20adatoms" title="magnetic and non-magnetic adatoms">magnetic and non-magnetic adatoms</a>, <a href="https://publications.waset.org/abstracts/search?q=quantum%20spin%20hall%20phase" title=" quantum spin hall phase"> quantum spin hall phase</a>, <a href="https://publications.waset.org/abstracts/search?q=spintronic%20applications" title=" spintronic applications"> spintronic applications</a>, <a href="https://publications.waset.org/abstracts/search?q=spin%20polarized%20conductance" title=" spin polarized conductance"> spin polarized conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20reversal%20symmetry" title=" time reversal symmetry"> time reversal symmetry</a> </p> <a href="https://publications.waset.org/abstracts/76194/magnetic-versus-non-magnetic-adatoms-in-graphene-nanoribbons-tuning-of-spintronic-applications-and-the-quantum-spin-hall-phase" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/76194.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">302</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3867</span> Physiological Response of Naturally Regenerated Pinus taeda L. Saplings to Four Levels of Stem Inoculation with Leptographium terebrantis </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John%20K.%20Mensah">John K. Mensah</a>, <a href="https://publications.waset.org/abstracts/search?q=Mary%20A.%20Sword%20Sayer"> Mary A. Sword Sayer</a>, <a href="https://publications.waset.org/abstracts/search?q=Ryan%20L.%20Nadel"> Ryan L. Nadel</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Matusick"> George Matusick</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhaofei%20Fan"> Zhaofei Fan</a>, <a href="https://publications.waset.org/abstracts/search?q=Lori%20G.%20Eckhardt"> Lori G. Eckhardt</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Leptographium terebrantis is an opportunistic root pathogen commonly associated with loblolly pine (Pinus taeda L.) stands that are undergoing a loss of vigor in the southeastern US. In order to understand the relationship between L. terebrantis inoculum density and host physiology, an artificial inoculation study was conducted in a five-year-old naturally regenerated loblolly pine stand over a 24 week period in a completely randomized design. L. terebrantis caused sapwood occlusions that increased in severity as inoculum density increased. The occlusions significantly reduced water transport through the stem but did not interfere with fascicle-level stomatal conductance or induce moisture stress in the saplings. The resilience of stomatal conductance among pathogen-infested saplings is attributed to the growth and hydraulic function of new sapwood that developed after artificial inoculation. Results demonstrate that faster-growing families of loblolly pine may be capable of tolerating the vascular root disease when the formation of new sapwood is supported by sustained crown health. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hydraulic%20conductance" title="hydraulic conductance">hydraulic conductance</a>, <a href="https://publications.waset.org/abstracts/search?q=inoculum%20density" title=" inoculum density"> inoculum density</a>, <a href="https://publications.waset.org/abstracts/search?q=Leptographium%20terebrantis" title=" Leptographium terebrantis"> Leptographium terebrantis</a>, <a href="https://publications.waset.org/abstracts/search?q=Pinus%20taeda" title=" Pinus taeda"> Pinus taeda</a>, <a href="https://publications.waset.org/abstracts/search?q=sapwood%20occlusion" title=" sapwood occlusion"> sapwood occlusion</a> </p> <a href="https://publications.waset.org/abstracts/84361/physiological-response-of-naturally-regenerated-pinus-taeda-l-saplings-to-four-levels-of-stem-inoculation-with-leptographium-terebrantis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84361.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">323</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">3866</span> Effect of Incremental Forming Parameters on Titanium Alloys Properties</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=P.%20Homola">P. Homola</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Novakova"> L. Novakova</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Kafka"> V. Kafka</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20P.%20Oscoz"> M. P. Oscoz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Shear spinning is closely related to the asymmetric incremental sheet forming (AISF) that could significantly reduce costs incurred by the fabrication of complex aeronautical components with a minimal environmental impact. The spinning experiments were carried out on commercially pure titanium (Ti-Gr2) and Ti-6Al-4V (Ti-Gr5) alloy. Three forming modes were used to characterize the titanium alloys properties from the point of view of different spinning parameters. The structure and properties of the materials were assessed by means of metallographic analyses and micro-hardness measurements. The highest value wall angle failure limit was achieved using spinning parameters mode for both materials. The feed rate effect was observed only in the samples from the Ti-Gr2 material, when a refinement of the grain microstructure with lower feed rate and higher tangential speed occurred. Ti-Gr5 alloy exhibited a decrease of the micro-hardness at higher straining due to recovery processes. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=incremental%20forming" title="incremental forming">incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=metallography" title=" metallography"> metallography</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20spinning" title=" shear spinning"> shear spinning</a>, <a href="https://publications.waset.org/abstracts/search?q=titanium%20alloys" title=" titanium alloys"> titanium alloys</a> </p> <a href="https://publications.waset.org/abstracts/4222/effect-of-incremental-forming-parameters-on-titanium-alloys-properties" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/4222.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">236</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">3865</span> Evaluation of Forming Properties on AA 5052 Aluminium Alloy by Incremental Forming </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Anbu%20Raj">A. Anbu Raj</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Mugendiren"> V. Mugendiren</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Sheet metal forming is a vital manufacturing process used in automobile, aerospace, agricultural industries, etc. Incremental forming is a promising process providing a short and inexpensive way of forming complex three-dimensional parts without using die. The aim of this research is to study the forming behaviour of AA 5052, Aluminium Alloy, using incremental forming and also to study the FLD of cone shape AA 5052 Aluminium Alloy at room temperature and various annealing temperature. Initially the surface roughness and wall thickness through incremental forming on AA 5052 Aluminium Alloy sheet at room temperature is optimized by controlling the effects of forming parameters. The central composite design (CCD) was utilized to plan the experiment. The step depth, feed rate, and spindle speed were considered as input parameters in this study. The surface roughness and wall thickness were used as output response. The process performances such as average thickness and surface roughness were evaluated. The optimized results are taken for minimum surface roughness and maximum wall thickness. The optimal results are determined based on response surface methodology and the analysis of variance. Formability Limit Diagram is constructed on AA 5052 Aluminium Alloy at room temperature and various annealing temperature by using optimized process parameters from the response surface methodology. The cone has higher formability than the square pyramid and higher wall thickness distribution. Finally the FLD on cone shape and square pyramid shape at room temperature and the various annealing temperature is compared experimentally and simulated with Abaqus software. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=incremental%20forming" title="incremental forming">incremental forming</a>, <a href="https://publications.waset.org/abstracts/search?q=response%20surface%20methodology" title=" response surface methodology"> response surface methodology</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=wall%20thickness" title=" wall thickness"> wall thickness</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20roughness" title=" surface roughness"> surface roughness</a> </p> <a href="https://publications.waset.org/abstracts/66474/evaluation-of-forming-properties-on-aa-5052-aluminium-alloy-by-incremental-forming" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/66474.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">338</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3864</span> Co-Evolutionary Fruit Fly Optimization Algorithm and Firefly Algorithm for Solving Unconstrained Optimization Problems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=R.%20M.%20Rizk-Allah">R. M. Rizk-Allah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents co-evolutionary fruit fly optimization algorithm based on firefly algorithm (CFOA-FA) for solving unconstrained optimization problems. The proposed algorithm integrates the merits of fruit fly optimization algorithm (FOA), firefly algorithm (FA) and elite strategy to refine the performance of classical FOA. Moreover, co-evolutionary mechanism is performed by applying FA procedures to ensure the diversity of the swarm. Finally, the proposed algorithm CFOA- FA is tested on several benchmark problems from the usual literature and the numerical results have demonstrated the superiority of the proposed algorithm for finding the global optimal solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=firefly%20algorithm" title="firefly algorithm">firefly algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=fruit%20fly%20optimization%20algorithm" title=" fruit fly optimization algorithm"> fruit fly optimization algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=unconstrained%20optimization%20problems" title=" unconstrained optimization problems"> unconstrained optimization problems</a> </p> <a href="https://publications.waset.org/abstracts/15923/co-evolutionary-fruit-fly-optimization-algorithm-and-firefly-algorithm-for-solving-unconstrained-optimization-problems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15923.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">536</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">3863</span> Neuron Dynamics of Single-Compartment Traub Model for Hardware Implementations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=J.%20C.%20Moctezuma">J. C. Moctezuma</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Bre%C3%B1a-Medina"> V. Breña-Medina</a>, <a href="https://publications.waset.org/abstracts/search?q=Jose%20Luis%20Nunez-Yanez"> Jose Luis Nunez-Yanez</a>, <a href="https://publications.waset.org/abstracts/search?q=Joseph%20P.%20McGeehan">Joseph P. McGeehan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work we make a bifurcation analysis for a single compartment representation of Traub model, one of the most important conductance-based models. The analysis focus in two principal parameters: current and leakage conductance. Study of stable and unstable solutions are explored; also Hop-bifurcation and frequency interpretation when current varies is examined. This study allows having control of neuron dynamics and neuron response when these parameters change. Analysis like this is particularly important for several applications such as: tuning parameters in learning process, neuron excitability tests, measure bursting properties of the neuron, etc. Finally, a hardware implementation results were developed to corroborate these results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Traub%20model" title="Traub model">Traub model</a>, <a href="https://publications.waset.org/abstracts/search?q=Pinsky-Rinzel%20model" title=" Pinsky-Rinzel model"> Pinsky-Rinzel model</a>, <a href="https://publications.waset.org/abstracts/search?q=Hopf%20bifurcation" title=" Hopf bifurcation"> Hopf bifurcation</a>, <a href="https://publications.waset.org/abstracts/search?q=single-compartment%20models" title=" single-compartment models"> single-compartment models</a>, <a href="https://publications.waset.org/abstracts/search?q=bifurcation%20analysis" title=" bifurcation analysis"> bifurcation analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=neuron%20modeling" title=" neuron modeling"> neuron modeling</a> </p> <a href="https://publications.waset.org/abstracts/10310/neuron-dynamics-of-single-compartment-traub-model-for-hardware-implementations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/10310.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">323</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=incremental%20conductance%20algorithm&page=2">2</a></li> <li class="page-item"><a class="page-link" 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