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time</title> <meta name="description" content="Search results for: cycle time"> <meta name="keywords" content="cycle time"> <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 ml-auto" 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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="cycle time"> <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> 19648</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: cycle time</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19648</span> Analysis of the Result for the Accelerated Life Cycle Test of the Motor for Washing Machine by Using Acceleration Factor</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Youn-Sung%20Kim">Youn-Sung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jin-Ho%20Jo"> Jin-Ho Jo</a>, <a href="https://publications.waset.org/abstracts/search?q=Mi-Sung%20Kim"> Mi-Sung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jae-Kun%20Lee"> Jae-Kun Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Accelerated life cycle test is applied to various products or components in order to reduce the time of life cycle test in industry. It must be considered for many test conditions according to the product characteristics for the test and the selection of acceleration parameter is especially very important. We have carried out the general life cycle test and the accelerated life cycle test by applying the acceleration factor (AF) considering the characteristics of brushless DC (BLDC) motor for washing machine. The final purpose of this study is to verify the validity by analyzing the results of the general life cycle test and the accelerated life cycle test. It will make it possible to reduce the life test time through the reasonable accelerated life cycle test. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accelerated%20life%20cycle%20test" title="accelerated life cycle test">accelerated life cycle test</a>, <a href="https://publications.waset.org/abstracts/search?q=reliability%20test" title=" reliability test"> reliability test</a>, <a href="https://publications.waset.org/abstracts/search?q=motor%20for%20washing%20machine" title=" motor for washing machine"> motor for washing machine</a>, <a href="https://publications.waset.org/abstracts/search?q=brushless%20dc%20motor%20test" title=" brushless dc motor test"> brushless dc motor test</a> </p> <a href="https://publications.waset.org/abstracts/68978/analysis-of-the-result-for-the-accelerated-life-cycle-test-of-the-motor-for-washing-machine-by-using-acceleration-factor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/68978.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">611</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">19647</span> A Study on the Accelerated Life Cycle Test Method of the Motor for Home Appliances by Using Acceleration Factor </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Youn-Sung%20Kim">Youn-Sung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mi-Sung%20Kim"> Mi-Sung Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jae-Kun%20Lee"> Jae-Kun Lee</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper deals with the accelerated life cycle test method of the motor for home appliances that demand high reliability. Life Cycle of parts in home appliances also should be 10 years because life cycle of the home appliances such as washing machine, refrigerator, TV is at least 10 years. In case of washing machine, the life cycle test method of motor is advanced for 3000 cycle test (1cycle = 2hours). However, 3000 cycle test incurs loss for the time and cost. Objectives of this study are to reduce the life cycle test time and the number of test samples, which could be realized by using acceleration factor for the test time and reduction factor for the number of sample. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=accelerated%20life%20cycle%20test" title="accelerated life cycle test">accelerated life cycle test</a>, <a href="https://publications.waset.org/abstracts/search?q=motor%20reliability%20test" title=" motor reliability test"> motor reliability test</a>, <a href="https://publications.waset.org/abstracts/search?q=motor%20for%20washing%20machine" title=" motor for washing machine"> motor for washing machine</a>, <a href="https://publications.waset.org/abstracts/search?q=BLDC%20motor" title=" BLDC motor"> BLDC motor</a> </p> <a href="https://publications.waset.org/abstracts/46400/a-study-on-the-accelerated-life-cycle-test-method-of-the-motor-for-home-appliances-by-using-acceleration-factor" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46400.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">635</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">19646</span> A Hybrid Genetic Algorithm for Assembly Line Balancing In Automotive Sector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Qazi%20Salman%20Khalid">Qazi Salman Khalid</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Khalid"> Muhammad Khalid</a>, <a href="https://publications.waset.org/abstracts/search?q=Shahid%20Maqsood"> Shahid Maqsood</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a solution for optimizing the cycle time in an assembly line with human-robot collaboration and diverse operators. A genetic algorithm with tailored parameters is used to address the assembly line balancing problem in the automobile sector. A mathematical model is developed, depicting the problem. Currently, the firm runs on the largest candidate rule; however, it causes a lag in orders, which ultimately gets penalized. The results of the study show that the proposed GA is effective in providing efficient solutions and that the cycle time has significantly impacted productivity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=line%20balancing" title="line balancing">line balancing</a>, <a href="https://publications.waset.org/abstracts/search?q=cycle%20time" title=" cycle time"> cycle time</a>, <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=productivity" title=" productivity"> productivity</a> </p> <a href="https://publications.waset.org/abstracts/162367/a-hybrid-genetic-algorithm-for-assembly-line-balancing-in-automotive-sector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162367.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">137</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19645</span> Reliability-Based Life-Cycle Cost Model for Engineering Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Reza%20Lotfalian">Reza Lotfalian</a>, <a href="https://publications.waset.org/abstracts/search?q=Sudarshan%20Martins"> Sudarshan Martins</a>, <a href="https://publications.waset.org/abstracts/search?q=Peter%20Radziszewski"> Peter Radziszewski</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The effect of reliability on life-cycle cost, including initial and maintenance cost of a system is studied. The failure probability of a component is used to calculate the average maintenance cost during the operation cycle of the component. The standard deviation of the life-cycle cost is also calculated as an error measure for the average life-cycle cost. As a numerical example, the model is used to study the average life cycle cost of an electric motor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=initial%20cost" title="initial cost">initial cost</a>, <a href="https://publications.waset.org/abstracts/search?q=life-cycle%20cost" title=" life-cycle cost"> life-cycle cost</a>, <a href="https://publications.waset.org/abstracts/search?q=maintenance%20cost" title=" maintenance cost"> maintenance cost</a>, <a href="https://publications.waset.org/abstracts/search?q=reliability" title=" reliability"> reliability</a> </p> <a href="https://publications.waset.org/abstracts/11947/reliability-based-life-cycle-cost-model-for-engineering-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11947.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">19644</span> Applying Different Working Fluids in a Combined Power and Ejector Refrigeration Cycle with Low Temperature Heat Sources </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samad%20Jafarmadar">Samad Jafarmadar</a>, <a href="https://publications.waset.org/abstracts/search?q=Amin%20Habibzadeh"> Amin Habibzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A power and cooling cycle, which combines the organic Rankine cycle and the ejector refrigeration cycle supplied by waste heat energy sources, is discussed in this paper. 13 working fluids including wet, dry, and isentropic fluids are studied in order to find their performances on the combined cycle. Various operating conditions’ effects on the proposed cycle are examined by fixing power/refrigeration ratio. According to the results, dry and isentropic fluids have better performance compared with wet fluids. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=combined%20power%20and%20refrigeration%20cycle" title="combined power and refrigeration cycle">combined power and refrigeration cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20temperature%20heat%20sources" title=" low temperature heat sources"> low temperature heat sources</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20rankine%20cycle" title=" organic rankine cycle"> organic rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20fluids" title=" working fluids"> working fluids</a> </p> <a href="https://publications.waset.org/abstracts/74101/applying-different-working-fluids-in-a-combined-power-and-ejector-refrigeration-cycle-with-low-temperature-heat-sources" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74101.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">270</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">19643</span> Time Compression in Engineer-to-Order Industry: A Case Study of a Norwegian Shipbuilding Industry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tarek%20Fatouh">Tarek Fatouh</a>, <a href="https://publications.waset.org/abstracts/search?q=Chehab%20Elbelehy"> Chehab Elbelehy</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Abdelsalam"> Alaa Abdelsalam</a>, <a href="https://publications.waset.org/abstracts/search?q=Eman%20Elakkad"> Eman Elakkad</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Abdelshafie"> Alaa Abdelshafie</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper aims to explore the possibility of time compression in Engineer to Order production networks. A case study research method is used in a Norwegian shipbuilding project by implementing a value stream mapping lean tool with total cycle time as a unit of analysis. The analysis resulted in demonstrating the time deviations for the planned tasks in one of the processes in the shipbuilding project. So, authors developed a future state map by removing time wastes from value stream process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=engineer%20to%20order" title="engineer to order">engineer to order</a>, <a href="https://publications.waset.org/abstracts/search?q=total%20cycle%20time" title=" total cycle time"> total cycle time</a>, <a href="https://publications.waset.org/abstracts/search?q=value%20stream%20mapping" title=" value stream mapping"> value stream mapping</a>, <a href="https://publications.waset.org/abstracts/search?q=shipbuilding" title=" shipbuilding"> shipbuilding</a> </p> <a href="https://publications.waset.org/abstracts/130840/time-compression-in-engineer-to-order-industry-a-case-study-of-a-norwegian-shipbuilding-industry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/130840.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">19642</span> Reliability Analysis of Heat Exchanger Cycle Using Non-Parametric Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Apurv%20Kulkarni">Apurv Kulkarni</a>, <a href="https://publications.waset.org/abstracts/search?q=Shreyas%20Badave"> Shreyas Badave</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Rajiv"> B. Rajiv</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-parametric reliability technique is useful for assessment of reliability of systems for which failure rates are not available. This is useful when detection of malfunctioning of any component is the key purpose during ongoing operation of the system. The main purpose of the Heat Exchanger Cycle discussed in this paper is to provide hot water at a constant temperature for longer periods of time. In such a cycle, certain components play a crucial role and this paper presents an effective way to predict the malfunctioning of the components by determination of system reliability. The method discussed in the paper is feasible and this is clarified with the help of various test cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20exchanger%20cycle" title="heat exchanger cycle">heat exchanger cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=k-statistics" title=" k-statistics"> k-statistics</a>, <a href="https://publications.waset.org/abstracts/search?q=PID%20controller" title=" PID controller"> PID controller</a>, <a href="https://publications.waset.org/abstracts/search?q=system%20reliability" title=" system reliability"> system reliability</a> </p> <a href="https://publications.waset.org/abstracts/69697/reliability-analysis-of-heat-exchanger-cycle-using-non-parametric-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69697.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">390</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">19641</span> A Further Study on the 4-Ordered Property of Some Chordal Ring Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shin-Shin%20Kao">Shin-Shin Kao</a>, <a href="https://publications.waset.org/abstracts/search?q=Hsiu-Chunj%20Pan"> Hsiu-Chunj Pan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Given a graph G. A cycle of G is a sequence of vertices of G such that the first and the last vertices are the same. A hamiltonian cycle of G is a cycle containing all vertices of G. The graph G is k-ordered (resp. k-ordered hamiltonian) if for any sequence of k distinct vertices of G, there exists a cycle (resp. hamiltonian cycle) in G containing these k vertices in the specified order. Obviously, any cycle in a graph is 1-ordered, 2-ordered and 3-ordered. Thus the study of any graph being k-ordered (resp. k-ordered hamiltonian) always starts with k = 4. Most studies about this topic work on graphs with no real applications. To our knowledge, the chordal ring families were the first one utilized as the underlying topology in interconnection networks and shown to be 4-ordered [1]. Furthermore, based on computer experimental results in [1], it was conjectured that some of them are 4-ordered hamiltonian. In this paper, we intend to give some possible directions in proving the conjecture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hamiltonian%20cycle" title="Hamiltonian cycle">Hamiltonian cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=4-ordered" title=" 4-ordered"> 4-ordered</a>, <a href="https://publications.waset.org/abstracts/search?q=Chordal%20rings" title=" Chordal rings"> Chordal rings</a>, <a href="https://publications.waset.org/abstracts/search?q=3-regular" title=" 3-regular"> 3-regular</a> </p> <a href="https://publications.waset.org/abstracts/13946/a-further-study-on-the-4-ordered-property-of-some-chordal-ring-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/13946.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">434</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">19640</span> The Effect of Catastrophic Losses on Insurance Cycle: Case of Croatia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Drago%20Jakov%C4%8Devi%C4%87">Drago Jakovčević</a>, <a href="https://publications.waset.org/abstracts/search?q=Maja%20Mihelja%20%C5%BDaja"> Maja Mihelja Žaja</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper provides an analysis of the insurance cycle in the Republic of Croatia and whether they are affected by catastrophic losses on a global level. In general, it is considered that insurance cycles are particularly pronounced in periods of financial crisis, but are also affected by the growing number of catastrophic losses. They cause the change of insurance cycle and premium growth and intensification and narrowing of the coverage conditions, so these variables move in the same direction and these phenomena point to a new cycle. The main goal of this paper is to determine the existence of insurance cycle in the Republic of Croatia and investigate whether catastrophic losses have an influence on insurance cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=catastrophic%20loss" title="catastrophic loss">catastrophic loss</a>, <a href="https://publications.waset.org/abstracts/search?q=insurance%20cycle" title=" insurance cycle"> insurance cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=premium" title=" premium"> premium</a>, <a href="https://publications.waset.org/abstracts/search?q=Republic%20of%20Croatia" title=" Republic of Croatia"> Republic of Croatia</a> </p> <a href="https://publications.waset.org/abstracts/7784/the-effect-of-catastrophic-losses-on-insurance-cycle-case-of-croatia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/7784.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">19639</span> Investigation of Main Operating Parameters Affecting Gas Turbine Efficiency and Gas Releases</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Farhat%20Hajer">Farhat Hajer</a>, <a href="https://publications.waset.org/abstracts/search?q=Khir%20Tahar"> Khir Tahar</a>, <a href="https://publications.waset.org/abstracts/search?q=Ammar%20Ben%20Brahim"> Ammar Ben Brahim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work presents a study on the influence of the main operating variables on the gas turbine cycle. A numerical simulation of a gas turbine cycle is performed for a real net power of 100 MW. A calculation code is developed using EES software. The operating variables are taken in conformity with the local environmental conditions adopted by the Tunisian Society of Electricity and Gas. Results show that the increase of ambient temperature leads to an increase of Tpz and NO<sub>x</sub> emissions rate and a decrease of cycle efficiency and UHC emissions. The CO emissions decrease with the raise of residence time, while NO<sub>x</sub> emissions rate increases and UHC emissions rate decreases. Furthermore, both of cycle efficiency and NOx emissions increase with the increase of the pressure ratio. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Carbon%20monoxide" title="Carbon monoxide">Carbon monoxide</a>, <a href="https://publications.waset.org/abstracts/search?q=Efficiency" title=" Efficiency"> Efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=Emissions" title=" Emissions"> Emissions</a>, <a href="https://publications.waset.org/abstracts/search?q=Gas%20Turbine" title=" Gas Turbine"> Gas Turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=Nox" title=" Nox"> Nox</a>, <a href="https://publications.waset.org/abstracts/search?q=UHC" title=" UHC"> UHC</a> </p> <a href="https://publications.waset.org/abstracts/69221/investigation-of-main-operating-parameters-affecting-gas-turbine-efficiency-and-gas-releases" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/69221.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">436</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">19638</span> Cascaded Transcritical/Supercritical CO2 Cycles and Organic Rankine Cycles to Recover Low-Temperature Waste Heat and LNG Cold Energy Simultaneously</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haoshui%20Yu">Haoshui Yu</a>, <a href="https://publications.waset.org/abstracts/search?q=Donghoi%20Kim"> Donghoi Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Truls%20Gundersen"> Truls Gundersen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Low-temperature waste heat is abundant in the process industries, and large amounts of Liquefied Natural Gas (LNG) cold energy are discarded without being recovered properly in LNG terminals. Power generation is an effective way to utilize low-temperature waste heat and LNG cold energy simultaneously. Organic Rankine Cycles (ORCs) and CO<sub>2</sub> power cycles are promising technologies to convert low-temperature waste heat and LNG cold energy into electricity. If waste heat and LNG cold energy are utilized simultaneously in one system, the performance may outperform separate systems utilizing low-temperature waste heat and LNG cold energy, respectively. Low-temperature waste heat acts as the heat source and LNG regasification acts as the heat sink in the combined system. Due to the large temperature difference between the heat source and the heat sink, cascaded power cycle configurations are proposed in this paper. Cascaded power cycles can improve the energy efficiency of the system considerably. The cycle operating at a higher temperature to recover waste heat is called top cycle and the cycle operating at a lower temperature to utilize LNG cold energy is called bottom cycle in this study. The top cycle condensation heat is used as the heat source in the bottom cycle. The top cycle can be an ORC, transcritical CO<sub>2</sub> (tCO<sub>2</sub>) cycle or supercritical CO<sub>2</sub> (sCO<sub>2</sub>) cycle, while the bottom cycle only can be an ORC due to the low-temperature range of the bottom cycle. However, the thermodynamic path of the tCO<sub>2</sub> cycle and sCO<sub>2</sub> cycle are different from that of an ORC. The tCO<sub>2</sub> cycle and the sCO<sub>2</sub> cycle perform better than an ORC for sensible waste heat recovery due to a better temperature match with the waste heat source. Different combinations of the tCO<sub>2</sub> cycle, sCO<sub>2</sub> cycle and ORC are compared to screen the best configurations of the cascaded power cycles. The influence of the working fluid and the operating conditions are also investigated in this study. Each configuration is modeled and optimized in Aspen HYSYS. The results show that cascaded tCO<sub>2</sub>/ORC performs better compared with cascaded ORC/ORC and cascaded sCO<sub>2</sub>/ORC for the case study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LNG%20cold%20energy" title="LNG cold energy">LNG cold energy</a>, <a href="https://publications.waset.org/abstracts/search?q=low-temperature%20waste%20heat" title=" low-temperature waste heat"> low-temperature waste heat</a>, <a href="https://publications.waset.org/abstracts/search?q=organic%20Rankine%20cycle" title=" organic Rankine cycle"> organic Rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=supercritical%20CO%E2%82%82%20cycle" title=" supercritical CO₂ cycle"> supercritical CO₂ cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=transcritical%20CO%E2%82%82%20cycle" title=" transcritical CO₂ cycle"> transcritical CO₂ cycle</a> </p> <a href="https://publications.waset.org/abstracts/86899/cascaded-transcriticalsupercritical-co2-cycles-and-organic-rankine-cycles-to-recover-low-temperature-waste-heat-and-lng-cold-energy-simultaneously" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86899.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">260</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">19637</span> On the Basis Number and the Minimum Cycle Bases of the Wreath Product of Paths with Wheels</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20M.%20M.%20Jaradat">M. M. M. Jaradat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> For a given graph G, the set Ԑ of all subsets of E(G) forms an |E(G)| dimensional vector space over Z2 with vector addition X⊕Y = (X\Y ) [ (Y \X) and scalar multiplication 1.X = X and 0.X = Ø for all X, Yϵ Ԑ. The cycle space, C(G), of a graph G is the vector subspace of (E; ⊕; .) spanned by the cycles of G. Traditionally there have been two notions of minimality among bases of C(G). First, a basis B of G is called a d-fold if each edge of G occurs in at most d cycles of the basis B. The basis number, b(G), of G is the least non-negative integer d such that C(G) has a d-fold basis; a required basis of C(G) is a basis for which each edge of G belongs to at most b(G) elements of B. Second, a basis B is called a minimum cycle basis (MCB) if its total length Σ BϵB |B| is minimum among all bases of C(G). The lexicographic product GρH has the vertex set V (GρH) = V (G) x V (H) and the edge set E(GρH) = {(u1, v1)(u2, v2)|u1 = u2 and v1 v2 ϵ E(H); or u1u2 ϵ E(G) and there is α ϵ Aut(H) such that α (v1) = v2}. In this work, a construction of a minimum cycle basis for the wreath product of wheels with paths is presented. Also, the length of the longest cycle of a minimum cycle basis is determined. Moreover, the basis number for the wreath product of the same is investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cycle%20space" title="cycle space">cycle space</a>, <a href="https://publications.waset.org/abstracts/search?q=minimum%20cycle%20basis" title=" minimum cycle basis"> minimum cycle basis</a>, <a href="https://publications.waset.org/abstracts/search?q=basis%20number" title=" basis number"> basis number</a>, <a href="https://publications.waset.org/abstracts/search?q=wreath%20product" title=" wreath product"> wreath product</a> </p> <a href="https://publications.waset.org/abstracts/2144/on-the-basis-number-and-the-minimum-cycle-bases-of-the-wreath-product-of-paths-with-wheels" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2144.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">19636</span> Comparative Exergy Analysis of Ammonia-Water Rankine Cycles and Kalina Cycle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Kyoung%20Hoon%20Kim">Kyoung Hoon Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a comparative exergy analysis of ammonia-water Rankine cycles with and without regeneration and Kalina cycle for recovery of low-temperature heat source. Special attention is paid to the effect of system parameters such as ammonia mass fraction and turbine inlet pressure on the exergetical performance of the systems. Results show that maximum exergy efficiency can be obtained in the regenerative Rankine cycle for high turbine inlet pressures. However, Kalina cycle shows better exergy efficiency for low turbine inlet pressures, and the optimum ammonia mass fractions of Kalina cycle are lower than Rankine cycles. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ammonia-water" title="ammonia-water">ammonia-water</a>, <a href="https://publications.waset.org/abstracts/search?q=Rankine%20cycle" title=" Rankine cycle"> Rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=Kalina%20cycle" title=" Kalina cycle"> Kalina cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=exergy" title=" exergy"> exergy</a>, <a href="https://publications.waset.org/abstracts/search?q=exergy%20destruction" title=" exergy destruction"> exergy destruction</a>, <a href="https://publications.waset.org/abstracts/search?q=low-temperature%20heat%20source" title=" low-temperature heat source"> low-temperature heat source</a> </p> <a href="https://publications.waset.org/abstracts/97344/comparative-exergy-analysis-of-ammonia-water-rankine-cycles-and-kalina-cycle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/97344.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">163</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">19635</span> Optimization of Supercritical CO2 Power Cycle for Waste Heat Recovery from Gas Turbine with Respect to Cooling Condition</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Young%20Min%20Kim">Young Min Kim</a>, <a href="https://publications.waset.org/abstracts/search?q=Jeong%20Lak%20Sohn"> Jeong Lak Sohn</a>, <a href="https://publications.waset.org/abstracts/search?q=Eui%20Soo%20Yoon"> Eui Soo Yoon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study describes the optimization of supercritical carbon dioxide (S-CO2) power cycle for recovering waste heat from a gas turbine. An S-CO2 cycle that recovers heat from small industrial and aeroderivative gas turbines can outperform a steam-bottoming cycle despite its simplicity and compactness. In using S-CO2 power cycles for waste heat recovery, a split cycle was studied to maximize the net output power by incorporating the utilization efficiency of the waste heat (lowering the temperature of the exhaust gas through the heater) along with the thermal efficiency of the cycle (minimizing the temperature difference for the heat transfer, exergy loss). The cooling condition of the S-CO2 WHR system has a great impact on the performance and the optimum low pressure of the system. Furthermore, the optimum high pressure of the S-CO2 WHR systems for the maximum power from the given heat sources is dependent on the temperature of the waste heat source. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=exergy%20loss" title="exergy loss">exergy loss</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20turbine" title=" gas turbine"> gas turbine</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=supercritical%20CO2%20power%20cycle" title=" supercritical CO2 power cycle"> supercritical CO2 power cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=split%20cycle" title=" split cycle"> split cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20heat%20recovery" title=" waste heat recovery"> waste heat recovery</a> </p> <a href="https://publications.waset.org/abstracts/59112/optimization-of-supercritical-co2-power-cycle-for-waste-heat-recovery-from-gas-turbine-with-respect-to-cooling-condition" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/59112.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">349</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">19634</span> Investigation of Heat Affected Zone of Steel P92 Using the Thermal Cycle Simulator</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Petr%20Mohyla">Petr Mohyla</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivo%20Hlavat%C3%BD"> Ivo Hlavatý</a>, <a href="https://publications.waset.org/abstracts/search?q=Ji%C5%99%C3%AD%20Hrub%C3%BD"> Jiří Hrubý</a>, <a href="https://publications.waset.org/abstracts/search?q=Lucie%20Krej%C4%8D%C3%AD"> Lucie Krejčí</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This work is focused on mechanical properties and microstructure of heat affected zone (HAZ) of steel P92. The thermal cycle simulator was used for modeling a fine grained zone of HAZ. Hardness and impact toughness were measured on simulated samples. Microstructural analysis using optical microscopy was performed on selected samples. Achieved results were compared with the values of a real welded joint. The thermal cycle simulator allows transferring the properties of very small HAZ to the sufficiently large sample where the tests of the mechanical properties can be performed. A satisfactory accordance was found when comparing the microstructure and mechanical properties of real welds and simulated samples. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20affected%20zone" title="heat affected zone">heat affected zone</a>, <a href="https://publications.waset.org/abstracts/search?q=impact%20test" title=" impact test"> impact test</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20cycle%20simulator" title=" thermal cycle simulator"> thermal cycle simulator</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20of%20tempering" title=" time of tempering"> time of tempering</a> </p> <a href="https://publications.waset.org/abstracts/67694/investigation-of-heat-affected-zone-of-steel-p92-using-the-thermal-cycle-simulator" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67694.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">19633</span> Camera Model Identification for Mi Pad 4, Oppo A37f, Samsung M20, and Oppo f9</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ulrich%20Wake">Ulrich Wake</a>, <a href="https://publications.waset.org/abstracts/search?q=Eniman%20Syamsuddin"> Eniman Syamsuddin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The model for camera model identificaiton is trained using pretrained model ResNet43 and ResNet50. The dataset consists of 500 photos of each phone. Dataset is divided into 1280 photos for training, 320 photos for validation and 400 photos for testing. The model is trained using One Cycle Policy Method and tested using Test-Time Augmentation. Furthermore, the model is trained for 50 epoch using regularization such as drop out and early stopping. The result is 90% accuracy for validation set and above 85% for Test-Time Augmentation using ResNet50. Every model is also trained by slightly updating the pretrained model’s weights <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%E2%80%8B%20One%20Cycle%20Policy" title=" One Cycle Policy"> One Cycle Policy</a>, <a href="https://publications.waset.org/abstracts/search?q=ResNet34" title=" ResNet34"> ResNet34</a>, <a href="https://publications.waset.org/abstracts/search?q=ResNet50" title=" ResNet50"> ResNet50</a>, <a href="https://publications.waset.org/abstracts/search?q=Test-Time%20Agumentation" title=" Test-Time Agumentation"> Test-Time Agumentation</a> </p> <a href="https://publications.waset.org/abstracts/124445/camera-model-identification-for-mi-pad-4-oppo-a37f-samsung-m20-and-oppo-f9" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/124445.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">19632</span> Short Life Cycle Time Series Forecasting</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shalaka%20Kadam">Shalaka Kadam</a>, <a href="https://publications.waset.org/abstracts/search?q=Dinesh%20Apte"> Dinesh Apte</a>, <a href="https://publications.waset.org/abstracts/search?q=Sagar%20Mainkar"> Sagar Mainkar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The life cycle of products is becoming shorter and shorter due to increased competition in market, shorter product development time and increased product diversity. Short life cycles are normal in retail industry, style business, entertainment media, and telecom and semiconductor industry. The subject of accurate forecasting for demand of short lifecycle products is of special enthusiasm for many researchers and organizations. Due to short life cycle of products the amount of historical data that is available for forecasting is very minimal or even absent when new or modified products are launched in market. The companies dealing with such products want to increase the accuracy in demand forecasting so that they can utilize the full potential of the market at the same time do not oversupply. This provides the challenge to develop a forecasting model that can forecast accurately while handling large variations in data and consider the complex relationships between various parameters of data. Many statistical models have been proposed in literature for forecasting time series data. Traditional time series forecasting models do not work well for short life cycles due to lack of historical data. Also artificial neural networks (ANN) models are very time consuming to perform forecasting. We have studied the existing models that are used for forecasting and their limitations. This work proposes an effective and powerful forecasting approach for short life cycle time series forecasting. We have proposed an approach which takes into consideration different scenarios related to data availability for short lifecycle products. We then suggest a methodology which combines statistical analysis with structured judgement. Also the defined approach can be applied across domains. We then describe the method of creating a profile from analogous products. This profile can then be used for forecasting products with historical data of analogous products. We have designed an application which combines data, analytics and domain knowledge using point-and-click technology. The forecasting results generated are compared using MAPE, MSE and RMSE error scores. Conclusion: Based on the results it is observed that no one approach is sufficient for short life-cycle forecasting and we need to combine two or more approaches for achieving the desired accuracy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=forecast" title="forecast">forecast</a>, <a href="https://publications.waset.org/abstracts/search?q=short%20life%20cycle%20product" title=" short life cycle product"> short life cycle product</a>, <a href="https://publications.waset.org/abstracts/search?q=structured%20judgement" title=" structured judgement"> structured judgement</a>, <a href="https://publications.waset.org/abstracts/search?q=time%20series" title=" time series"> time series</a> </p> <a href="https://publications.waset.org/abstracts/33435/short-life-cycle-time-series-forecasting" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/33435.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">19631</span> Thermodynamic Optimization of an R744 Based Transcritical Refrigeration System with Dedicated Mechanical Subcooling Cycle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihir%20Mouchum%20Hazarika">Mihir Mouchum Hazarika</a>, <a href="https://publications.waset.org/abstracts/search?q=Maddali%20Ramgopal"> Maddali Ramgopal</a>, <a href="https://publications.waset.org/abstracts/search?q=Souvik%20Bhattacharyya"> Souvik Bhattacharyya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The thermodynamic analysis shows that the performance of the R744 based transcritical refrigeration cycle drops drastically for higher ambient temperatures. This is due to the peculiar s-shape of the isotherm in the supercritical region. However, subcooling of the refrigerant at the gas cooler exit enhances the performance of the R744 based system. The present study is carried out to analyze the R744 based transcritical system with dedicated mechanical subcooling cycle. Based on this proposed cycle, the thermodynamic analysis is performed, and optimum operating parameters are determined. The amount of subcooling and the pressure ratio in the subcooling cycle are the parameters which are needed to be optimized to extract the maximum COP from this proposed cycle. It is expected that this study will be helpful in implementing the dedicated subcooling cycle with R744 based transcritical system to improve the performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optimization" title="optimization">optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=R744" title=" R744"> R744</a>, <a href="https://publications.waset.org/abstracts/search?q=subcooling" title=" subcooling"> subcooling</a>, <a href="https://publications.waset.org/abstracts/search?q=transcritical" title=" transcritical"> transcritical</a> </p> <a href="https://publications.waset.org/abstracts/65947/thermodynamic-optimization-of-an-r744-based-transcritical-refrigeration-system-with-dedicated-mechanical-subcooling-cycle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65947.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">306</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">19630</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">19629</span> Analysis of Ionospheric Variations over Japan during 23rd Solar Cycle Using Wavelet Techniques</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20S.%20Seema">C. S. Seema</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20R.%20Prince"> P. R. Prince</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The characterization of spatio-temporal inhomogeneities occurring in the ionospheric F₂ layer is remarkable since these variations are direct consequences of electrodynamical coupling between magnetosphere and solar events. The temporal and spatial variations of the F₂ layer, which occur with a period of several days or even years, mainly owe to geomagnetic and meteorological activities. The hourly F₂ layer critical frequency (foF2) over 23rd solar cycle (1996-2008) of three ionosonde stations (Wakkanai, Kokunbunji, and Okinawa) in northern hemisphere, which falls within same longitudinal span, is analyzed using continuous wavelet techniques. Morlet wavelet is used to transform continuous time series data of foF2 to a two dimensional time-frequency space, quantifying the time evolution of the oscillatory modes. The presence of significant time patterns (periodicities) at a particular time period and the time location of each periodicity are detected from the two-dimensional representation of the wavelet power, in the plane of scale and period of the time series. The mean strength of each periodicity over the entire period of analysis is studied using global wavelet spectrum. The quasi biennial, annual, semiannual, 27 day, diurnal and 12 hour variations of foF2 are clearly evident in the wavelet power spectra in all the three stations. Critical frequency oscillations with multi-day periods (2-3 days and 9 days in the low latitude station, 6-7 days in all stations and 15 days in mid-high latitude station) are also superimposed over large time scaled variations. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=continuous%20wavelet%20analysis" title="continuous wavelet analysis">continuous wavelet analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=critical%20frequency" title=" critical frequency"> critical frequency</a>, <a href="https://publications.waset.org/abstracts/search?q=ionosphere" title=" ionosphere"> ionosphere</a>, <a href="https://publications.waset.org/abstracts/search?q=solar%20cycle" title=" solar cycle"> solar cycle</a> </p> <a href="https://publications.waset.org/abstracts/75814/analysis-of-ionospheric-variations-over-japan-during-23rd-solar-cycle-using-wavelet-techniques" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75814.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">220</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">19628</span> A Design of the Organic Rankine Cycle for the Low Temperature Waste Heat</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Fra%C5%88a">K. Fraňa</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20M%C3%BCller"> M. Müller</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A presentation of the design of the Organic Rankine Cycle (ORC) with heat regeneration and super-heating processes is a subject of this paper. The maximum temperature level in the ORC is considered to be 110°C and the maximum pressure varies up to 2.5MPa. The selection process of the appropriate working fluids, thermal design and calculation of the cycle and its components are described. With respect to the safety, toxicity, flammability, price and thermal cycle efficiency, the working fluid selected is R134a. As a particular example, the thermal design of the condenser used for the ORC engine with a theoretical thermal power of 179 kW was introduced. The minimal heat transfer area for a completed condensation was determined to be approximately 520m2. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=organic%20rankine%20cycle" title="organic rankine cycle">organic rankine cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=thermal%20efficiency" title=" thermal efficiency"> thermal efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=working%20fluids" title=" working fluids"> working fluids</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20engineering" title=" environmental engineering"> environmental engineering</a> </p> <a href="https://publications.waset.org/abstracts/2120/a-design-of-the-organic-rankine-cycle-for-the-low-temperature-waste-heat" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2120.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">460</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">19627</span> Impact of Design Choices on the Life Cycle Energy of Modern Buildings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahsa%20Karimpour">Mahsa Karimpour</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Belusko"> Martin Belusko</a>, <a href="https://publications.waset.org/abstracts/search?q=Ke%20Xing"> Ke Xing</a>, <a href="https://publications.waset.org/abstracts/search?q=Frank%20Bruno"> Frank Bruno</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Traditionally the embodied energy of design choices which reduce operational energy were assumed to have a negligible impact on the life cycle energy of buildings. However with new buildings having considerably lower operational energy, the significance of embodied energy increases. A life cycle assessment of a population of house designs was conducted in a mild and mixed climate zone. It was determined not only that embodied energy dominates life cycle energy, but that the impact on embodied of design choices was of equal significance to the impact on operational energy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=building%20life%20cycle%20energy" title="building life cycle energy">building life cycle energy</a>, <a href="https://publications.waset.org/abstracts/search?q=embodied%20energy" title=" embodied energy"> embodied energy</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20design%20measures" title=" energy design measures"> energy design measures</a>, <a href="https://publications.waset.org/abstracts/search?q=low%20energy%20buildings" title=" low energy buildings"> low energy buildings</a> </p> <a href="https://publications.waset.org/abstracts/28025/impact-of-design-choices-on-the-life-cycle-energy-of-modern-buildings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28025.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">771</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">19626</span> Thermodynamic Cycle Analysis for Overall Efficiency Improvement and Temperature Reduction in Gas Turbines</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jeni%20A.%20Popescu">Jeni A. Popescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ionut%20Porumbel"> Ionut Porumbel</a>, <a href="https://publications.waset.org/abstracts/search?q=Valeriu%20A.%20Vilag"> Valeriu A. Vilag</a>, <a href="https://publications.waset.org/abstracts/search?q=Cleopatra%20F.%20Cuciumita"> Cleopatra F. Cuciumita</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper presents a thermodynamic cycle analysis for three turboshaft engines. The first is the cycle is a Brayton cycle, describing the evolution of a classical turboshaft, based on the Klimov TV2 engine. The other two cycles aim at approaching an Ericsson cycle, by replacing the Brayton cycle adiabatic expansion in the turbine by quasi-isothermal expansion. The maximum quasi-Ericsson cycles temperature is set to a lower value than the maximum Brayton cycle temperature, equal to the Brayton cycle power turbine inlet temperature, in order to decrease the engine NOx emissions. Also, the power distribution over the stages of the gas generator turbine is maintained the same. In the first of the two considered quasi-Ericsson cycle, the efficiencies of the gas generator turbine stage. Also, the power distribution over the stages of the gas generator turbine is maintained the same. In the first of the two considered quasi-Ericsson cycle, the efficiencies of the gas generator turbine stages are maintained the same as for the reference case, while for the second, the efficiencies are increased in order to obtain the same shaft power as in the reference case. It is found that in the first case, both the shaft power and the thermodynamic efficiency of the engine decrease, while in the second, the power is maintained, and even a slight increase in efficiency can be noted. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=combustion" title="combustion">combustion</a>, <a href="https://publications.waset.org/abstracts/search?q=Ericsson" title=" Ericsson"> Ericsson</a>, <a href="https://publications.waset.org/abstracts/search?q=thermodynamic%20analysis" title=" thermodynamic analysis"> thermodynamic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=turbine" title=" turbine "> turbine </a> </p> <a href="https://publications.waset.org/abstracts/28151/thermodynamic-cycle-analysis-for-overall-efficiency-improvement-and-temperature-reduction-in-gas-turbines" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28151.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">610</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">19625</span> Identification of Key Parameters for Benchmarking of Combined Cycle Power Plants Retrofit</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20Sabzchi%20Asl">S. Sabzchi Asl</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Tahouni"> N. Tahouni</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20H.%20Panjeshahi"> M. H. Panjeshahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Benchmarking of a process with respect to energy consumption, without accomplishing a full retrofit study, can save both engineering time and money. In order to achieve this goal, the first step is to develop a conceptual-mathematical model that can easily be applied to a group of similar processes. In this research, we have aimed to identify a set of key parameters for the model which is supposed to be used for benchmarking of combined cycle power plants. For this purpose, three similar combined cycle power plants were studied. The results showed that ambient temperature, pressure and relative humidity, number of HRSG evaporator pressure levels and relative power in part load operation are the main key parameters. Also, the relationships between these parameters and produced power (by gas/ steam turbine), gas turbine and plant efficiency, temperature and mass flow rate of the stack flue gas were investigated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=combined%20cycle%20power%20plant" title="combined cycle power plant">combined cycle power plant</a>, <a href="https://publications.waset.org/abstracts/search?q=energy%20benchmarking" title=" energy benchmarking"> energy benchmarking</a>, <a href="https://publications.waset.org/abstracts/search?q=modelling" title=" modelling"> modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=retrofit" title=" retrofit"> retrofit</a> </p> <a href="https://publications.waset.org/abstracts/43201/identification-of-key-parameters-for-benchmarking-of-combined-cycle-power-plants-retrofit" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43201.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">305</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">19624</span> The Relation between Body Mass Index and Menstrual Cycle Disorders in Medical Students of University Pelita Harapan, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gabriella%20Tjondro">Gabriella Tjondro</a>, <a href="https://publications.waset.org/abstracts/search?q=Julita%20Dortua%20Laurentina%20Nainggolan"> Julita Dortua Laurentina Nainggolan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Introduction: There are several things affecting menstrual cycle, namely, nutritional status, diet, financial status of one’s household and exercises. The most commonly used parameter to calculate the fat in a human body is body mass index. Therefore, it is necessary to do research to prevent complications caused by menstrual disorder in the future. Design Study: This research is an observational analytical study with the cross-sectional-case control approach. Participants (n = 124; median age = 19.5 years ± SD 3.5) were classified into 2 groups: normal, NM (n = 62; BMI = 18-23 kg/m<sup>2</sup>) and obese, OB (n = 62; BMI = > 25 kg/m<sup>2</sup>). BMI was calculated from the equation; BMI = weight, kg/height, m<sup>2</sup>. Results: There were 79.10% from obese group who experienced menstrual cycle disorders (n=53, 79.10%; p value 0.00; OR 5.25) and 20.90% from normal BMI group with menstrual cycle disorders. There were several factors in this research that also influence the menstrual cycle disorders such as stress (44.78%; p value 0.00; OR 1.85), sleep disorders (25.37%; p value 0.00; OR 1.01), physical activities (25.37%; p value 0.00; OR 1.24) and diet (10.45%; p value 0.00; OR 1.07). Conclusion: There is a significant relation between body mass index (obese) and menstrual cycle disorders. However, BMI is not the only factor that affects the menstrual cycle disorders. There are several factors that also can affect menstrual cycle disorders, in this study we use stress, sleep disorders, physical activities and diet, in which none of them are dominant. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=menstrual%20disorders" title="menstrual disorders">menstrual disorders</a>, <a href="https://publications.waset.org/abstracts/search?q=menstrual%20cycle" title=" menstrual cycle"> menstrual cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=obesity" title=" obesity"> obesity</a>, <a href="https://publications.waset.org/abstracts/search?q=body%20mass%20index" title=" body mass index"> body mass index</a>, <a href="https://publications.waset.org/abstracts/search?q=stress" title=" stress"> stress</a>, <a href="https://publications.waset.org/abstracts/search?q=sleep%20disorders" title=" sleep disorders"> sleep disorders</a>, <a href="https://publications.waset.org/abstracts/search?q=physical%20activities" title=" physical activities"> physical activities</a>, <a href="https://publications.waset.org/abstracts/search?q=diet" title=" diet"> diet</a> </p> <a href="https://publications.waset.org/abstracts/101172/the-relation-between-body-mass-index-and-menstrual-cycle-disorders-in-medical-students-of-university-pelita-harapan-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/101172.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">19623</span> Neural Network Based Compressor Flow Estimator in an Aircraft Vapor Cycle System</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Justin%20Reverdi">Justin Reverdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Sixin%20Zhang"> Sixin Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Serge%20Gratton"> Serge Gratton</a>, <a href="https://publications.waset.org/abstracts/search?q=Said%20Aoues"> Said Aoues</a>, <a href="https://publications.waset.org/abstracts/search?q=Thomas%20Pellegrini"> Thomas Pellegrini</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In Vapor Cycle Systems, the flow sensor plays a key role in different monitoring and control purposes. However, physical sensors can be expensive, inaccurate, heavy, cumbersome, or highly sensitive to vibrations, which is especially problematic when embedded into an aircraft. The conception of a virtual sensor based on other standard sensors is a good alternative. In this paper, a data-driven model using a Convolutional Neural Network is proposed to estimate the flow of the compressor. To fit the model to our dataset, we tested different loss functions. We show in our application that a Dynamic Time Warping based loss function called DILATE leads to better dynamical performance than the vanilla mean squared error (MSE) loss function. DILATE allows choosing a trade-off between static and dynamic performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title="deep learning">deep learning</a>, <a href="https://publications.waset.org/abstracts/search?q=dynamic%20time%20warping" title=" dynamic time warping"> dynamic time warping</a>, <a href="https://publications.waset.org/abstracts/search?q=vapor%20cycle%20system" title=" vapor cycle system"> vapor cycle system</a>, <a href="https://publications.waset.org/abstracts/search?q=virtual%20sensor" title=" virtual sensor"> virtual sensor</a> </p> <a href="https://publications.waset.org/abstracts/163402/neural-network-based-compressor-flow-estimator-in-an-aircraft-vapor-cycle-system" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163402.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">146</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">19622</span> Enhancing Children’s English Vocabulary Acquisition through Digital Storytelling at Happy Kids Kindergarten, Palembang, Indonesia</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gaya%20Tridinanti">Gaya Tridinanti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Enhanching English vocabulary in early childhood is the main problem often faced by teachers. Thus, the purpose of this study was to determine the enhancement of children’s English vocabulary acquisition by using digital storytelling. This type of research was an action research. It consisted of a series of four activities done in repeated cycles: planning, implementation, observation, and reflection. The subject of the study consisted of 30 students of B group (5-6 years old) attending Happy Kids Kindergarten Palembang, Indonesia. This research was conducted in three cycles. The methods used for data collection were observation and documentation. Descriptive qualitative and quantitative methods were also used to analyse the data. The research showed that the digital storytelling learning activities could enhance the children’s English vocabulary acquisition. It is based on the data in which the enhancement in pre-cycle was 37% and 51% in Cycle I. In Cycle II it was 71% and in Cycle III it was 89.3%. The results showed an enhancement of about 14% from the pre-cycle to Cycle I, 20% from Cycle I to Cycle II, and enhancement of about 18.3% from Cycle II to Cycle III. The conclusion of this study suggests that digital storytelling learning method could enhance the English vocabulary acquisition of B group children at the Happy Kids Kindergarten Palembang. Therefore, digital storytelling can be considered as an alternative to improve English language learning in the classroom. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acquisition" title="acquisition">acquisition</a>, <a href="https://publications.waset.org/abstracts/search?q=enhancing" title=" enhancing"> enhancing</a>, <a href="https://publications.waset.org/abstracts/search?q=digital%20storytelling" title=" digital storytelling"> digital storytelling</a>, <a href="https://publications.waset.org/abstracts/search?q=English%20vocabulary" title=" English vocabulary"> English vocabulary</a> </p> <a href="https://publications.waset.org/abstracts/70037/enhancing-childrens-english-vocabulary-acquisition-through-digital-storytelling-at-happy-kids-kindergarten-palembang-indonesia" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70037.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">257</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">19621</span> Optimization of a Combined Ejector-Vapor Compression Refrigeration Systems with R134a</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ilhem%20Ouelhazi">Ilhem Ouelhazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Mouna%20Elakhdar"> Mouna Elakhdar</a>, <a href="https://publications.waset.org/abstracts/search?q=Lakdar%20Kairouani"> Lakdar Kairouani</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A computer simulation model for a combined ejector-vapor compression cycle that uses working fluid R134a. A refrigeration system was developed which combines a basic vapor compression refrigeration cycle with an ejector cooling cycle. A one-dimensional mathematical model was developed using the equations governing the flow and thermodynamics based on the constant area ejector flow model. The effects of the operating parameters on the cooling capacity, the performance coefficient, and the entrainment ratio are studied. The current model is based on the NIST-REFPROP database for refrigerants properties calculations. The simulated performance is compared with the available experimental data from the literature for validation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=combined%20refrigeration%20cycle" title="combined refrigeration cycle">combined refrigeration cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=constant%20area%20ejector" title=" constant area ejector"> constant area ejector</a>, <a href="https://publications.waset.org/abstracts/search?q=R134a" title=" R134a"> R134a</a>, <a href="https://publications.waset.org/abstracts/search?q=ejector-cooling%20cycle" title=" ejector-cooling cycle"> ejector-cooling cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=performance" title=" performance"> performance</a>, <a href="https://publications.waset.org/abstracts/search?q=mathematical%20simulation" title=" mathematical simulation"> mathematical simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=vapor%20compression%20cycle" title=" vapor compression cycle"> vapor compression cycle</a> </p> <a href="https://publications.waset.org/abstracts/87803/optimization-of-a-combined-ejector-vapor-compression-refrigeration-systems-with-r134a" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87803.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">226</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">19620</span> Part Performance Improvement through Design Optimisation of Cooling Channels in the Injection Moulding Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20A.%20Alhubail">M. A. Alhubail</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20I.%20Alateyah"> A. I. Alateyah</a>, <a href="https://publications.waset.org/abstracts/search?q=D.%20Alenezi"> D. Alenezi</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Aldousiri"> B. Aldousiri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study conformal cooling channel (CCC) was employed to dissipate heat of, Polypropylene (PP) parts injected into the Stereolithography (SLA) insert to form tensile and flexural test specimens. The direct metal laser sintering (DMLS) process was used to fabricate a mould with optimised CCC, while optimum parameters of injection moulding were obtained using Optimal-D. The obtained results show that optimisation of the cooling channel layout using a DMLS mould has significantly shortened cycle time without sacrificing the part’s mechanical properties. By applying conformal cooling channels, the cooling time phase was reduced by 20 seconds, and also defected parts were eliminated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=optimum%20parameters" title="optimum parameters">optimum parameters</a>, <a href="https://publications.waset.org/abstracts/search?q=injection%20moulding" title=" injection moulding"> injection moulding</a>, <a href="https://publications.waset.org/abstracts/search?q=conformal%20cooling%20channels" title=" conformal cooling channels"> conformal cooling channels</a>, <a href="https://publications.waset.org/abstracts/search?q=cycle%20time" title=" cycle time"> cycle time</a> </p> <a href="https://publications.waset.org/abstracts/44273/part-performance-improvement-through-design-optimisation-of-cooling-channels-in-the-injection-moulding-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/44273.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">19619</span> Quality Based Approach for Efficient Biologics Manufacturing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Takashi%20Kaminagayoshi">Takashi Kaminagayoshi</a>, <a href="https://publications.waset.org/abstracts/search?q=Shigeyuki%20Haruyama"> Shigeyuki Haruyama</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To improve the manufacturing efficiency of biologics, such as antibody drugs, a quality engineering framework was designed. Within this framework, critical steps and parameters in the manufacturing process were studied. Identification of these critical steps and critical parameters allows a deeper understanding of manufacturing capabilities, and suggests to process development department process control standards based on actual manufacturing capabilities as part of a PDCA (plan-do-check-act) cycle. This cycle can be applied to each manufacturing process so that it can be standardized, reducing the time needed to establish each new process. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antibody%20drugs" title="antibody drugs">antibody drugs</a>, <a href="https://publications.waset.org/abstracts/search?q=biologics" title=" biologics"> biologics</a>, <a href="https://publications.waset.org/abstracts/search?q=manufacturing%20efficiency" title=" manufacturing efficiency"> manufacturing efficiency</a>, <a href="https://publications.waset.org/abstracts/search?q=PDCA%20cycle" title=" PDCA cycle"> PDCA cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20engineering" title=" quality engineering"> quality engineering</a> </p> <a href="https://publications.waset.org/abstracts/42626/quality-based-approach-for-efficient-biologics-manufacturing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42626.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">345</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=cycle%20time&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cycle%20time&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cycle%20time&page=4">4</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=cycle%20time&page=5">5</a></li> <li class="page-item"><a class="page-link" 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