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effects</title> <meta name="description" content="Search results for: fixed effects"> <meta name="keywords" content="fixed effects"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="fixed effects"> <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> 11838</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: fixed effects</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11838</span> Pruning Residue Effects on Symbiotic N₂ Fixation and δ¹³C Isotopic Composition of Sesbania sesban and Cajanus cajan</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20T.%20Makhubedu">I. T. Makhubedu</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20A.%20Letty"> B. A. Letty</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20F.%20Scogings"> P. F. Scogings</a>, <a href="https://publications.waset.org/abstracts/search?q=P.%20L.%20Mafongoya"> P. L. Mafongoya</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Despite their potential importance in recycling dinitrogen (N2) fixed in alley cropping systems, the effects of tree pruning residues on symbiotic N2 fixation are poorly studied. A 2 x 2 x 2 factorial experiment was conducted to evaluate the effects of pruning residue management and pruning date on symbiotic performance and <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=alley%20cropping" title="alley cropping">alley cropping</a>, <a href="https://publications.waset.org/abstracts/search?q=management" title=" management"> management</a>, <a href="https://publications.waset.org/abstracts/search?q=N%E2%82%82%20fixed" title=" N₂ fixed"> N₂ fixed</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20abundance" title=" natural abundance"> natural abundance</a>, <a href="https://publications.waset.org/abstracts/search?q=recycling" title=" recycling"> recycling</a> </p> <a href="https://publications.waset.org/abstracts/99673/pruning-residue-effects-on-symbiotic-n2-fixation-and-d13c-isotopic-composition-of-sesbania-sesban-and-cajanus-cajan" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/99673.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">213</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">11837</span> The Effect of Institutions on Economic Growth: An Analysis Based on Bayesian Panel Data Estimation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohammad%20Anwar">Mohammad Anwar</a>, <a href="https://publications.waset.org/abstracts/search?q=Shah%20Waliullah"> Shah Waliullah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigated panel data regression models. This paper used Bayesian and classical methods to study the impact of institutions on economic growth from data (1990-2014), especially in developing countries. Under the classical and Bayesian methodology, the two-panel data models were estimated, which are common effects and fixed effects. For the Bayesian approach, the prior information is used in this paper, and normal gamma prior is used for the panel data models. The analysis was done through WinBUGS14 software. The estimated results of the study showed that panel data models are valid models in Bayesian methodology. In the Bayesian approach, the effects of all independent variables were positively and significantly affected by the dependent variables. Based on the standard errors of all models, we must say that the fixed effect model is the best model in the Bayesian estimation of panel data models. Also, it was proved that the fixed effect model has the lowest value of standard error, as compared to other models. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Bayesian%20approach" title="Bayesian approach">Bayesian approach</a>, <a href="https://publications.waset.org/abstracts/search?q=common%20effect" title=" common effect"> common effect</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20effect" title=" fixed effect"> fixed effect</a>, <a href="https://publications.waset.org/abstracts/search?q=random%20effect" title=" random effect"> random effect</a>, <a href="https://publications.waset.org/abstracts/search?q=Dynamic%20Random%20Effect%20Model" title=" Dynamic Random Effect Model"> Dynamic Random Effect Model</a> </p> <a href="https://publications.waset.org/abstracts/161692/the-effect-of-institutions-on-economic-growth-an-analysis-based-on-bayesian-panel-data-estimation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/161692.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">68</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">11836</span> Temporal Fixed Effects: The Macroeconomic Implications on Industry Return</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdy%20Elhusseiny">Mahdy Elhusseiny</a>, <a href="https://publications.waset.org/abstracts/search?q=Richard%20Gearhart"> Richard Gearhart</a>, <a href="https://publications.waset.org/abstracts/search?q=Mariam%20Alyammahi"> Mariam Alyammahi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this study we analyse the impact of a number of major macroeconomic variables on industry-specific excess rates of return. In later specifications, we include time and recession fixed effects, to potentially capture time-specific trends that may have been changing over our panel. We have a number of results that bear mentioning. Seasonal and temporal factors found to have very large role in sector-specific excess returns. Increases in M1(money supply) decreases bank, insurance, real estate, and telecommunications, while increases industrial and transportation excess returns. The results indicate that the market return increases every sector-specific rate of return. The 2007 to 2009 recession significantly reduced excess returns in the bank, real estate, and transportation sectors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=macroeconomic%20factors" title="macroeconomic factors">macroeconomic factors</a>, <a href="https://publications.waset.org/abstracts/search?q=industry%20returns" title=" industry returns"> industry returns</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20effects" title=" fixed effects"> fixed effects</a>, <a href="https://publications.waset.org/abstracts/search?q=temporal%20factors" title=" temporal factors"> temporal factors</a> </p> <a href="https://publications.waset.org/abstracts/163978/temporal-fixed-effects-the-macroeconomic-implications-on-industry-return" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163978.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">76</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">11835</span> Investigation on Behavior of Fixed-Ended Reinforced Concrete Deep Beams </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Y.%20Heyrani%20Birak">Y. Heyrani Birak</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Hizaji"> R. Hizaji</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Shahkarami"> J. Shahkarami</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reinforced Concrete (RC) deep beams are special structural elements because of their geometry and behavior under loads. For example, assumption of strain- stress distribution is not linear in the cross section. These types of beams may have simple supports or fixed supports. A lot of research works have been conducted on simply supported deep beams, but little study has been done in the fixed-end RC deep beams behavior. Recently, using of fixed-ended deep beams has been widely increased in structures. In this study, the behavior of fixed-ended deep beams is investigated, and the important parameters in capacity of this type of beams are mentioned. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20beam" title="deep beam">deep beam</a>, <a href="https://publications.waset.org/abstracts/search?q=capacity" title=" capacity"> capacity</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforced%20concrete" title=" reinforced concrete"> reinforced concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed-ended" title=" fixed-ended"> fixed-ended</a> </p> <a href="https://publications.waset.org/abstracts/57558/investigation-on-behavior-of-fixed-ended-reinforced-concrete-deep-beams" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57558.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">334</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">11834</span> Effects of GRF on CMJ in Different Wooden Surface Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yi-cheng%20Chen">Yi-cheng Chen</a>, <a href="https://publications.waset.org/abstracts/search?q=Ming-jum%20Guo"> Ming-jum Guo</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang-ru%20Chen"> Yang-ru Chen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background and Objective: For safety and fair during basketball competition, FIBA proposes the definite level of physical functions in wooden surface system (WSS). There are existing various between different systems in indoor-stadium, so the aim of this study want to know how many effects in different WSS, especially for effects of ground reaction force(GRF) when player jumped. Materials and Methods: 12 participants acted counter-movement jump (CMJ) on 7 different surfaces, include 6 WSSs by 3 types rubber shock absorber pad (SAP) on cross or parallel fixed, and 1 rigid ground. GRFs of takeoff and landing had been recorded from an AMTI force platform when all participants acted vertical CMJs by counter-balance design. All data were analyzed using the one-way ANOVA to evaluate whether the test variable differed significantly between surfaces. The significance level was set at α=0.05. Results: There were non-significance in GRF between surfaces when participants taken off. For GRF of landing, we found WSS with cross fixed SAP are harder than parallel fixed. Although there were also non-significance when participant was landing on cross or parallel fixed surfaces, but there have test variable differed significantly between WSS with parallel fixed to rigid ground. In the study, landing to WSS with the hardest SAP, the GRF also have test variable differed significantly to other WSS. Conclusion: Although official basketball competition is in the WSS certificated by FIBA, there are also exist the various in GRF under takeoff or landing, any player must to warm-up before game starting. Especially, there is unsafe situation when play basketball on uncertificated WSS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wooden%20surface%20system" title="wooden surface system">wooden surface system</a>, <a href="https://publications.waset.org/abstracts/search?q=counter-movement%20jump" title=" counter-movement jump"> counter-movement jump</a>, <a href="https://publications.waset.org/abstracts/search?q=ground%20reaction%20force" title=" ground reaction force"> ground reaction force</a>, <a href="https://publications.waset.org/abstracts/search?q=shock%20absorber%20pad" title=" shock absorber pad"> shock absorber pad</a> </p> <a href="https://publications.waset.org/abstracts/30923/effects-of-grf-on-cmj-in-different-wooden-surface-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30923.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">445</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">11833</span> A New Fixed Point Theorem for Almost θ-Contraction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Hichem%20Ramoul">Hichem Ramoul</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this work, we introduce a new type of contractive maps and we establish a new fixed point theorem for the class of almost θ-contractions (more general than the class of almost contractions) in a complete generalized metric space. The major novelty of our work is to prove a new fixed point result by weakening some hypotheses imposed on the function θ which will change completely the classical technique used in the literature review to prove fixed point theorems for almost θ-contractions in a complete generalized metric space. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=almost%20contraction" title="almost contraction">almost contraction</a>, <a href="https://publications.waset.org/abstracts/search?q=almost%20%CE%B8-contraction" title=" almost θ-contraction"> almost θ-contraction</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20point" title=" fixed point"> fixed point</a>, <a href="https://publications.waset.org/abstracts/search?q=generalized%20metric%20space" title=" generalized metric space"> generalized metric space</a> </p> <a href="https://publications.waset.org/abstracts/42427/a-new-fixed-point-theorem-for-almost-th-contraction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42427.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">303</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">11832</span> [Keynote Talk]: Existence of Random Fixed Point Theorem for Contractive Mappings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=D.%20S.%20Palimkar">D. S. Palimkar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Random fixed point theory has received much attention in recent years, and it is needed for the study of various classes of random equations. The study of random fixed point theorems was initiated by the Prague school of probabilistic in the 1950s. The existence and uniqueness of fixed points for the self-maps of a metric space by altering distances between the points with the use of a control function is an interesting aspect in the classical fixed point theory. In a new category of fixed point problems for a single self-map with the help of a control function that alters the distance between two points in a metric space which they called an altering distance function. In this paper, we prove the results of existence of random common fixed point and its uniqueness for a pair of random mappings under weakly contractive condition for generalizing alter distance function in polish spaces using Random Common Fixed Point Theorem for Generalized Weakly Contractions. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Polish%20space" title="Polish space">Polish space</a>, <a href="https://publications.waset.org/abstracts/search?q=random%20common%20fixed%20point%20theorem" title=" random common fixed point theorem"> random common fixed point theorem</a>, <a href="https://publications.waset.org/abstracts/search?q=weakly%20contractive%20mapping" title=" weakly contractive mapping"> weakly contractive mapping</a>, <a href="https://publications.waset.org/abstracts/search?q=altering%20function" title=" altering function"> altering function</a> </p> <a href="https://publications.waset.org/abstracts/79650/keynote-talk-existence-of-random-fixed-point-theorem-for-contractive-mappings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79650.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">273</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">11831</span> Heat Transfer Characteristics of Aluminum Foam Heat Sinks Subject to an Impinging Jet</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=So-Ra%20Jeon">So-Ra Jeon</a>, <a href="https://publications.waset.org/abstracts/search?q=Chan%20Byon"> Chan Byon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study investigates the heat transfer characteristics of aluminum foam heat sink and pin fin heat sink subjected to an impinging air jet under a fixed pumping power condition as well as fixed flow rate condition. The effects of dimensionless pumping power or the Reynolds number and the impinging distance ratio on the Nusselt number are considered. The result shows that the effect of the impinging distance on the Nusselt number is negligible under a fixed pumping power condition, while the Nusselt number increases with decreasing the impinging distance under a fixed pumping power condition. A correlation for the pressure drop is obtained as a function of the flow rate and the impinging distance ratio. And correlations for the stagnation Nusselt number of the impinging jet are developed as a function of the pumping power. The aluminum foam heat sinks did not show higher thermal performance compared to a conventional pin fin heat sink under a fixed pumping power condition. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aluminum%20foam" title="aluminum foam">aluminum foam</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20sinks" title=" heat sinks"> heat sinks</a>, <a href="https://publications.waset.org/abstracts/search?q=impinging%20jet" title=" impinging jet"> impinging jet</a>, <a href="https://publications.waset.org/abstracts/search?q=pumping%20power" title=" pumping power"> pumping power</a> </p> <a href="https://publications.waset.org/abstracts/21227/heat-transfer-characteristics-of-aluminum-foam-heat-sinks-subject-to-an-impinging-jet" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21227.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">11830</span> Measurements of Radial Velocity in Fixed Fluidized Bed for Fischer-Tropsch Synthesis Using LDV</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiaolai%20Zhang">Xiaolai Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Haitao%20Zhang"> Haitao Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiwen%20Sun"> Qiwen Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Weixin%20Qian"> Weixin Qian</a>, <a href="https://publications.waset.org/abstracts/search?q=Weiyong%20Ying"> Weiyong Ying</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High temperature Fischer-Tropsch synthesis process use fixed fluidized bed as a reactor. In order to understand the flow behavior in the fluidized bed better, the research of how the radial velocity affect the entire flow field is necessary. Laser Doppler Velocimetry (LDV) was used to study the radial velocity distribution along the diameter direction of the cross-section of the particle in a fixed fluidized bed. The velocity in the cross-section is fluctuating within a small range. The direction of the speed is a random phenomenon. In addition to r/R is 1, the axial velocity are more than 6 times of the radial velocity, the radial velocity has little impact on the axial velocity in a fixed fluidized bed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fischer-Tropsch%20synthesis" title="Fischer-Tropsch synthesis">Fischer-Tropsch synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=Fixed%20fluidized%20bed" title=" Fixed fluidized bed"> Fixed fluidized bed</a>, <a href="https://publications.waset.org/abstracts/search?q=LDV" title=" LDV"> LDV</a>, <a href="https://publications.waset.org/abstracts/search?q=Velocity" title=" Velocity"> Velocity</a> </p> <a href="https://publications.waset.org/abstracts/24993/measurements-of-radial-velocity-in-fixed-fluidized-bed-for-fischer-tropsch-synthesis-using-ldv" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24993.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">405</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">11829</span> Monthly Labor Forces Surveys Portray Smooth Labor Markets and Bias Fixed Effects Estimation: Evidence from Israel’s Transition from Quarterly to Monthly Surveys </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Haggay%20Etkes">Haggay Etkes</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study provides evidence for the impact of monthly interviews conducted for the Israeli Labor Force Surveys (LFSs) on estimated flows between labor force (LF) statuses and on coefficients in fixed-effects estimations. The study uses the natural experiment of parallel interviews for the quarterly and the monthly LFSs in Israel in 2011 for demonstrating that the Labor Force Participation (LFP) rate of Jewish persons who participated in the monthly LFS increased between interviews, while in the quarterly LFS it decreased. Interestingly, the estimated impact on the LFP rate of self-reporting individuals is 2.6–3.5 percentage points while the impact on the LFP rate of individuals whose data was reported by another member of their household (a proxy), is lower and statistically insignificant. The relative increase of the LFP rate in the monthly survey is a result of a lower rate of exit from the LF and a somewhat higher rate of entry into the LF relative to these flows in the quarterly survey. These differing flows have a bearing on labor search models as the monthly survey portrays a labor market with less friction and a “steady state” LFP rate that is 5.9 percentage points higher than the quarterly survey. The study also demonstrates that monthly interviews affect a specific group (45–64 year-olds); thus the sign of coefficient of age as an explanatory variable in fixed-effects regressions on LFP is negative in the monthly survey and positive in the quarterly survey. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=measurement%20error" title="measurement error">measurement error</a>, <a href="https://publications.waset.org/abstracts/search?q=surveys" title=" surveys"> surveys</a>, <a href="https://publications.waset.org/abstracts/search?q=search" title=" search"> search</a>, <a href="https://publications.waset.org/abstracts/search?q=LFSs" title=" LFSs"> LFSs</a> </p> <a href="https://publications.waset.org/abstracts/14429/monthly-labor-forces-surveys-portray-smooth-labor-markets-and-bias-fixed-effects-estimation-evidence-from-israels-transition-from-quarterly-to-monthly-surveys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14429.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">11828</span> CFD Study on the Effect of Primary Air on Combustion of Simulated MSW Process in the Fixed Bed</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rui%20Sun">Rui Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Tamer%20M.%20Ismail"> Tamer M. Ismail</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaohan%20Ren"> Xiaohan Ren</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Abd%20El-Salam"> M. Abd El-Salam</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Incineration of municipal solid waste (MSW) is one of the key scopes in the global clean energy strategy. A computational fluid dynamics (CFD) model was established. In order to reveal these features of the combustion process in a fixed porous bed of MSW. Transporting equations and process rate equations of the waste bed were modeled and set up to describe the incineration process, according to the local thermal conditions and waste property characters. Gas phase turbulence was modeled using k-ε turbulent model and the particle phase was modeled using the kinetic theory of granular flow. The heterogeneous reaction rates were determined using Arrhenius eddy dissipation and the Arrhenius-diffusion reaction rates. The effects of primary air flow rate and temperature in the burning process of simulated MSW are investigated experimentally and numerically. The simulation results in bed are accordant with experimental data well. The model provides detailed information on burning processes in the fixed bed, which is otherwise very difficult to obtain by conventional experimental techniques. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics%20%28CFD%29%20model" title="computational fluid dynamics (CFD) model">computational fluid dynamics (CFD) model</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20incineration" title=" waste incineration"> waste incineration</a>, <a href="https://publications.waset.org/abstracts/search?q=municipal%20solid%20waste%20%28MSW%29" title=" municipal solid waste (MSW)"> municipal solid waste (MSW)</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20bed" title=" fixed bed"> fixed bed</a>, <a href="https://publications.waset.org/abstracts/search?q=primary%20air" title=" primary air "> primary air </a> </p> <a href="https://publications.waset.org/abstracts/18091/cfd-study-on-the-effect-of-primary-air-on-combustion-of-simulated-msw-process-in-the-fixed-bed" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/18091.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">402</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">11827</span> Generalization of Zhou Fixed Point Theorem</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yu%20Lu">Yu Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fixed point theory is a basic tool for the study of the existence of Nash equilibria in game theory. This paper presents a significant generalization of the Veinott-Zhou fixed point theorem for increasing correspondences, which serves as an essential framework for investigating the existence of Nash equilibria in supermodular and quasisupermodular games. To establish our proofs, we explore different conceptions of multivalued increasingness and provide comprehensive results concerning the existence of the largest/least fixed point. We provide two distinct approaches to the proof, each offering unique insights and advantages. These advancements not only extend the applicability of the Veinott-Zhou theorem to a broader range of economic scenarios but also enhance the theoretical framework for analyzing equilibrium behavior in complex game-theoretic models. Our findings pave the way for future research in the development of more sophisticated models of economic behavior and strategic interaction. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fixed-point" title="fixed-point">fixed-point</a>, <a href="https://publications.waset.org/abstracts/search?q=Tarski%E2%80%99s%20fixed-point%20theorem" title=" Tarski’s fixed-point theorem"> Tarski’s fixed-point theorem</a>, <a href="https://publications.waset.org/abstracts/search?q=Nash%20equilibrium" title=" Nash equilibrium"> Nash equilibrium</a>, <a href="https://publications.waset.org/abstracts/search?q=supermodular%20game" title=" supermodular game"> supermodular game</a> </p> <a href="https://publications.waset.org/abstracts/185964/generalization-of-zhou-fixed-point-theorem" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/185964.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">55</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">11826</span> Using Arellano-Bover/Blundell-Bond Estimator in Dynamic Panel Data Analysis – Case of Finnish Housing Price Dynamics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Janne%20Engblom">Janne Engblom</a>, <a href="https://publications.waset.org/abstracts/search?q=Elias%20Oikarinen"> Elias Oikarinen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A panel dataset is one that follows a given sample of individuals over time, and thus provides multiple observations on each individual in the sample. Panel data models include a variety of fixed and random effects models which form a wide range of linear models. A special case of panel data models are dynamic in nature. A complication regarding a dynamic panel data model that includes the lagged dependent variable is endogeneity bias of estimates. Several approaches have been developed to account for this problem. In this paper, the panel models were estimated using the Arellano-Bover/Blundell-Bond Generalized method of moments (GMM) estimator which is an extension of the Arellano-Bond model where past values and different transformations of past values of the potentially problematic independent variable are used as instruments together with other instrumental variables. The Arellano–Bover/Blundell–Bond estimator augments Arellano–Bond by making an additional assumption that first differences of instrument variables are uncorrelated with the fixed effects. This allows the introduction of more instruments and can dramatically improve efficiency. It builds a system of two equations—the original equation and the transformed one—and is also known as system GMM. In this study, Finnish housing price dynamics were examined empirically by using the Arellano–Bover/Blundell–Bond estimation technique together with ordinary OLS. The aim of the analysis was to provide a comparison between conventional fixed-effects panel data models and dynamic panel data models. The Arellano–Bover/Blundell–Bond estimator is suitable for this analysis for a number of reasons: It is a general estimator designed for situations with 1) a linear functional relationship; 2) one left-hand-side variable that is dynamic, depending on its own past realizations; 3) independent variables that are not strictly exogenous, meaning they are correlated with past and possibly current realizations of the error; 4) fixed individual effects; and 5) heteroskedasticity and autocorrelation within individuals but not across them. Based on data of 14 Finnish cities over 1988-2012 differences of short-run housing price dynamics estimates were considerable when different models and instrumenting were used. Especially, the use of different instrumental variables caused variation of model estimates together with their statistical significance. This was particularly clear when comparing estimates of OLS with different dynamic panel data models. Estimates provided by dynamic panel data models were more in line with theory of housing price dynamics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dynamic%20model" title="dynamic model">dynamic model</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20effects" title=" fixed effects"> fixed effects</a>, <a href="https://publications.waset.org/abstracts/search?q=panel%20data" title=" panel data"> panel data</a>, <a href="https://publications.waset.org/abstracts/search?q=price%20dynamics" title=" price dynamics"> price dynamics</a> </p> <a href="https://publications.waset.org/abstracts/27438/using-arellano-boverblundell-bond-estimator-in-dynamic-panel-data-analysis-case-of-finnish-housing-price-dynamics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27438.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">1508</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">11825</span> Testing the Capital Structure Behavior of Malaysian Firms: Shariah vs. Non-Shariah Compliant </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Asyraf%20%20Abdul%20Halim">Asyraf Abdul Halim</a>, <a href="https://publications.waset.org/abstracts/search?q=Mohd%20Edil%20Abd%20Sukor"> Mohd Edil Abd Sukor</a>, <a href="https://publications.waset.org/abstracts/search?q=Obiyathulla%20Ismath%20%20Bacha"> Obiyathulla Ismath Bacha</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper attempts to investigate the capital structure behavior of Shariah compliant firms of various levels as well those firms who are consistently Shariah non-compliant in Malaysia. The paper utilizes a unique dataset of firms of the heterogeneous level of Shariah-compliancy status over a 20 year period from the year 1997 to 2016. The paper focuses on the effects of dynamic forces behind capital structure variation such as the optimal capital structure behavior based on the trade-off, pecking order, market timing and firmly fixed effect models of capital structure. This study documents significant evidence in support of the trade-off theory with a high speed of adjustment (SOA) as well as for the time-invariant firm fixed effects across all Shariah compliance group. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=capital%20structure" title="capital structure">capital structure</a>, <a href="https://publications.waset.org/abstracts/search?q=market%20timing" title=" market timing"> market timing</a>, <a href="https://publications.waset.org/abstracts/search?q=trade-off%20theory" title=" trade-off theory"> trade-off theory</a>, <a href="https://publications.waset.org/abstracts/search?q=equity%20risk%20premium" title=" equity risk premium"> equity risk premium</a>, <a href="https://publications.waset.org/abstracts/search?q=Shariah-compliant%20firms" title=" Shariah-compliant firms"> Shariah-compliant firms</a> </p> <a href="https://publications.waset.org/abstracts/78483/testing-the-capital-structure-behavior-of-malaysian-firms-shariah-vs-non-shariah-compliant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78483.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">312</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">11824</span> Neural Network in Fixed Time for Collision Detection between Two Convex Polyhedra</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Khouil">M. Khouil</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Saber"> N. Saber</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Mestari"> M. Mestari</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper, a different architecture of a collision detection neural network (DCNN) is developed. This network, which has been particularly reviewed, has enabled us to solve with a new approach the problem of collision detection between two convex polyhedra in a fixed time (O (1) time). We used two types of neurons, linear and threshold logic, which simplified the actual implementation of all the networks proposed. The study of the collision detection is divided into two sections, the collision between a point and a polyhedron and then the collision between two convex polyhedra. The aim of this research is to determine through the AMAXNET network a mini maximum point in a fixed time, which allows us to detect the presence of a potential collision. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=collision%20identification" title="collision identification">collision identification</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20time" title=" fixed time"> fixed time</a>, <a href="https://publications.waset.org/abstracts/search?q=convex%20polyhedra" title=" convex polyhedra"> convex polyhedra</a>, <a href="https://publications.waset.org/abstracts/search?q=neural%20network" title=" neural network"> neural network</a>, <a href="https://publications.waset.org/abstracts/search?q=AMAXNET" title=" AMAXNET"> AMAXNET</a> </p> <a href="https://publications.waset.org/abstracts/8931/neural-network-in-fixed-time-for-collision-detection-between-two-convex-polyhedra" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/8931.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">422</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">11823</span> Design and Stability Analysis of Fixed Wing – VTOL UAV</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Omar%20Eldenali">Omar Eldenali</a>, <a href="https://publications.waset.org/abstracts/search?q=Ahmed%20M.%20Bufares"> Ahmed M. Bufares</a> </p> <p class="card-text"><strong>Abstract:</strong></p> There are primarily two types of Unmanned Aerial Vehicle (UAVs), namely, multirotor and fixed wing. Each type has its own advantages. This study introduces a design of a fixed wing vertical take-off and landing (VTOL) UAV. The design is classified as ready-to-fly (RTF) fixed wing UAV. This means that the UAV is capable of not only taking off, landing, or hovering like a multirotor aircraft but also cruising like a fixed wing UAV. In this study, the conceptual design of 15 kg takeoff weight twin-tail boom configuration FW-VTOL plane is carried out, the initial sizing of the plane is conducted, and both the horizontal and vertical tail configurations are estimated. Moreover, the power required for each stage of flight is determined. Finally, the stability analysis of the plane based on this design is performed, the results shows that this design based on the suggested flight mission is stable and can be utilized. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=FW-VTOL" title="FW-VTOL">FW-VTOL</a>, <a href="https://publications.waset.org/abstracts/search?q=initial%20sizing" title=" initial sizing"> initial sizing</a>, <a href="https://publications.waset.org/abstracts/search?q=constrain%20analysis" title=" constrain analysis"> constrain analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=stability" title=" stability"> stability</a> </p> <a href="https://publications.waset.org/abstracts/173709/design-and-stability-analysis-of-fixed-wing-vtol-uav" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173709.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">88</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">11822</span> The Relationship Between Hourly Compensation and Unemployment Rate Using the Panel Data Regression Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=S.%20K.%20Ashiquer%20Rahman">S. K. Ashiquer Rahman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> the paper concentrations on the importance of hourly compensation, emphasizing the significance of the unemployment rate. There are the two most important factors of a nation these are its unemployment rate and hourly compensation. These are not merely statistics but they have profound effects on individual, families, and the economy. They are inversely related to one another. When we consider the unemployment rate that will probably decline as hourly compensations in manufacturing rise. But when we reduced the unemployment rates and increased job prospects could result from higher compensation. That’s why, the increased hourly compensation in the manufacturing sector that could have a favorable effect on job changing issues. Moreover, the relationship between hourly compensation and unemployment is complex and influenced by broader economic factors. In this paper, we use panel data regression models to evaluate the expected link between hourly compensation and unemployment rate in order to determine the effect of hourly compensation on unemployment rate. We estimate the fixed effects model, evaluate the error components, and determine which model (the FEM or ECM) is better by pooling all 60 observations. We then analysis and review the data by comparing 3 several countries (United States, Canada and the United Kingdom) using panel data regression models. Finally, we provide result, analysis and a summary of the extensive research on how the hourly compensation effects on the unemployment rate. Additionally, this paper offers relevant and useful informational to help the government and academic community use an econometrics and social approach to lessen on the effect of the hourly compensation on Unemployment rate to eliminate the problem. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=hourly%20compensation" title="hourly compensation">hourly compensation</a>, <a href="https://publications.waset.org/abstracts/search?q=Unemployment%20rate" title=" Unemployment rate"> Unemployment rate</a>, <a href="https://publications.waset.org/abstracts/search?q=panel%20data%20regression%20models" title=" panel data regression models"> panel data regression models</a>, <a href="https://publications.waset.org/abstracts/search?q=dummy%20variables" title=" dummy variables"> dummy variables</a>, <a href="https://publications.waset.org/abstracts/search?q=random%20effects%20model" title=" random effects model"> random effects model</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20effects%20model" title=" fixed effects model"> fixed effects model</a>, <a href="https://publications.waset.org/abstracts/search?q=the%20linear%20regression%20model" title=" the linear regression model"> the linear regression model</a> </p> <a href="https://publications.waset.org/abstracts/183027/the-relationship-between-hourly-compensation-and-unemployment-rate-using-the-panel-data-regression-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/183027.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">81</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">11821</span> Failure Mechanism in Fixed-Ended Reinforced Concrete Deep Beams under Cyclic Load</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20Aarabzadeh">A. Aarabzadeh</a>, <a href="https://publications.waset.org/abstracts/search?q=R.%20Hizaji"> R. Hizaji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Reinforced Concrete (RC) deep beams are a special type of beams due to their geometry, boundary conditions, and behavior compared to ordinary shallow beams. For example, assumption of a linear strain-stress distribution in the cross section is not valid. Little study has been dedicated to fixed-end RC deep beams. Also, most experimental studies are carried out on simply supported deep beams. Regarding recent tendency for application of deep beams, possibility of using fixed-ended deep beams has been widely increased in structures. Therefore, it seems necessary to investigate the aforementioned structural element in more details. In addition to experimental investigation of a concrete deep beam under cyclic load, different failure mechanisms of fixed-ended deep beams under this type of loading have been evaluated in the present study. The results show that failure mechanisms of deep beams under cyclic loads are quite different from monotonic loads. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20beam" title="deep beam">deep beam</a>, <a href="https://publications.waset.org/abstracts/search?q=cyclic%20load" title=" cyclic load"> cyclic load</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforced%20concrete" title=" reinforced concrete"> reinforced concrete</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed-ended" title=" fixed-ended"> fixed-ended</a> </p> <a href="https://publications.waset.org/abstracts/56504/failure-mechanism-in-fixed-ended-reinforced-concrete-deep-beams-under-cyclic-load" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56504.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">361</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">11820</span> Digitalization and High Audit Fees: An Empirical Study Applied to US Firms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Arpine%20Maghakyan">Arpine Maghakyan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The purpose of this paper is to study the relationship between the level of industry digitalization and audit fees, especially, the relationship between Big 4 auditor fees and industry digitalization level. On the one hand, automation of business processes decreases internal control weakness and manual mistakes; increases work effectiveness and integrations. On the other hand, it may cause serious misstatements, high business risks or even bankruptcy, typically in early stages of automation. Incomplete automation can bring high audit risk especially if the auditor does not fully understand client’s business automation model. Higher audit risk consequently will cause higher audit fees. Higher audit fees for clients with high automation level are more highlighted in Big 4 auditor’s behavior. Using data of US firms from 2005-2015, we found that industry level digitalization is an interaction for the auditor quality on audit fees. Moreover, the choice of Big4 or non-Big4 is correlated with client’s industry digitalization level. Big4 client, which has higher digitalization level, pays more than one with low digitalization level. In addition, a high-digitalized firm that has Big 4 auditor pays higher audit fee than non-Big 4 client. We use audit fees and firm-specific variables from Audit Analytics and Compustat databases. We analyze collected data by using fixed effects regression methods and Wald tests for sensitivity check. We use fixed effects regression models for firms for determination of the connections between technology use in business and audit fees. We control for firm size, complexity, inherent risk, profitability and auditor quality. We chose fixed effects model as it makes possible to control for variables that have not or cannot be measured. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=audit%20fees" title="audit fees">audit fees</a>, <a href="https://publications.waset.org/abstracts/search?q=auditor%20quality" title=" auditor quality"> auditor quality</a>, <a href="https://publications.waset.org/abstracts/search?q=digitalization" title=" digitalization"> digitalization</a>, <a href="https://publications.waset.org/abstracts/search?q=Big4" title=" Big4"> Big4</a> </p> <a href="https://publications.waset.org/abstracts/67190/digitalization-and-high-audit-fees-an-empirical-study-applied-to-us-firms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67190.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">11819</span> Fixed Point Iteration of a Damped and Unforced Duffing's Equation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Paschal%20A.%20Ochang">Paschal A. Ochang</a>, <a href="https://publications.waset.org/abstracts/search?q=Emmanuel%20C.%20Oji"> Emmanuel C. Oji</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Duffing’s Equation is a second order system that is very important because they are fundamental to the behaviour of higher order systems and they have applications in almost all fields of science and engineering. In the biological area, it is useful in plant stem dependence and natural frequency and model of the Brain Crash Analysis (BCA). In Engineering, it is useful in the study of Damping indoor construction and Traffic lights and to the meteorologist it is used in the prediction of weather conditions. However, most Problems in real life that occur are non-linear in nature and may not have analytical solutions except approximations or simulations, so trying to find an exact explicit solution may in general be complicated and sometimes impossible. Therefore we aim to find out if it is possible to obtain one analytical fixed point to the non-linear ordinary equation using fixed point analytical method. We started by exposing the scope of the Duffing’s equation and other related works on it. With a major focus on the fixed point and fixed point iterative scheme, we tried different iterative schemes on the Duffing’s Equation. We were able to identify that one can only see the fixed points to a Damped Duffing’s Equation and not to the Undamped Duffing’s Equation. This is because the cubic nonlinearity term is the determining factor to the Duffing’s Equation. We finally came to the results where we identified the stability of an equation that is damped, forced and second order in nature. Generally, in this research, we approximate the solution of Duffing’s Equation by converting it to a system of First and Second Order Ordinary Differential Equation and using Fixed Point Iterative approach. This approach shows that for different versions of Duffing’s Equations (damped), we find fixed points, therefore the order of computations and running time of applied software in all fields using the Duffing’s equation will be reduced. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=damping" title="damping">damping</a>, <a href="https://publications.waset.org/abstracts/search?q=Duffing%27s%20equation" title=" Duffing's equation"> Duffing's equation</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20point%20analysis" title=" fixed point analysis"> fixed point analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=second%20order%20differential" title=" second order differential"> second order differential</a>, <a href="https://publications.waset.org/abstracts/search?q=stability%20analysis" title=" stability analysis"> stability analysis</a> </p> <a href="https://publications.waset.org/abstracts/72553/fixed-point-iteration-of-a-damped-and-unforced-duffings-equation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72553.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">292</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">11818</span> Experimental Study on Slicing of Sapphire with Fixed Abrasive Diamond Wire Saw</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mengjun%20Zhang">Mengjun Zhang</a>, <a href="https://publications.waset.org/abstracts/search?q=Yuli%20Sun"> Yuli Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Dunwen%20Zuo"> Dunwen Zuo</a>, <a href="https://publications.waset.org/abstracts/search?q=Chunxiang%20Xie"> Chunxiang Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Chunming%20Zhang"> Chunming Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Experimental study on slicing of sapphire with fixed abrasive diamond wire saw was conducted in this paper. The process parameters were optimized through orthogonal experiment of three factors and four levels. The effects of wire speed, feed speed and tension pressure on the surface roughness were analyzed. Surface roughness in cutting direction and feed direction were both detected. The results show that feed speed plays the most significant role on the surface roughness of sliced sapphire followed by wire speed and tension pressure. The optimized process parameters are as follows: wire speed 1.9 m/s, feed speed 0.187 mm/min and tension pressure 0.18 MPa. In the end, the results were verified by analysis of variance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fixed%20abrasive" title="fixed abrasive">fixed abrasive</a>, <a href="https://publications.waset.org/abstracts/search?q=diamond%20wire%20saw" title=" diamond wire saw"> diamond wire saw</a>, <a href="https://publications.waset.org/abstracts/search?q=slicing" title=" slicing"> slicing</a>, <a href="https://publications.waset.org/abstracts/search?q=sapphire" title=" sapphire"> sapphire</a>, <a href="https://publications.waset.org/abstracts/search?q=orthogonal%20experiment" title=" orthogonal experiment"> orthogonal experiment</a> </p> <a href="https://publications.waset.org/abstracts/19615/experimental-study-on-slicing-of-sapphire-with-fixed-abrasive-diamond-wire-saw" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/19615.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">11817</span> Tuning of Fixed Wing Micro Aerial Vehicles Using Tethered Setup</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shoeb%20Ahmed%20Adeel">Shoeb Ahmed Adeel</a>, <a href="https://publications.waset.org/abstracts/search?q=Vivek%20Paul"> Vivek Paul</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20Prajwal"> K. Prajwal</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Fenelon"> Michael Fenelon</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Techniques have been used to tether and stabilize a multi-rotor MAV but carrying out the same process to a fixed wing MAV is a novel method which can be utilized in order to reduce damage occurring to the fixed wing MAVs while conducting flight test trials and PID tuning. A few sensors and on board controller is required to carry out this experiment in horizontal and vertical plane of the vehicle. Here we will be discussing issues such as sensitivity of the air vehicle, endurance and external load of the string acting on the vehicle. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=MAV" title="MAV">MAV</a>, <a href="https://publications.waset.org/abstracts/search?q=PID%20tuning" title=" PID tuning"> PID tuning</a>, <a href="https://publications.waset.org/abstracts/search?q=tethered%20flight" title=" tethered flight"> tethered flight</a>, <a href="https://publications.waset.org/abstracts/search?q=UAV" title=" UAV"> UAV</a> </p> <a href="https://publications.waset.org/abstracts/35297/tuning-of-fixed-wing-micro-aerial-vehicles-using-tethered-setup" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/35297.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">636</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">11816</span> Fixed Point of Lipschitz Quasi Nonexpansive Mappings</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maryam%20Moosavi">Maryam Moosavi</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadi%20Khatibzadeh"> Hadi Khatibzadeh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The main purpose of this paper is to study the proximal point algorithm for quasi-nonexpansive mappings in Hadamard spaces. △-convergence and strong convergence of cyclic resolvents for a finite family of quasi-nonexpansive mappings one to a fixed point of the mappings are established <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fixed%20point" title="Fixed point">Fixed point</a>, <a href="https://publications.waset.org/abstracts/search?q=Hadamard%20space" title=" Hadamard space"> Hadamard space</a>, <a href="https://publications.waset.org/abstracts/search?q=Proximal%20point%20algorithm" title=" Proximal point algorithm"> Proximal point algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=Quasi-nonexpansive%20sequence%20of%20mappings" title=" Quasi-nonexpansive sequence of mappings"> Quasi-nonexpansive sequence of mappings</a>, <a href="https://publications.waset.org/abstracts/search?q=Resolvent" title=" Resolvent"> Resolvent</a> </p> <a href="https://publications.waset.org/abstracts/163471/fixed-point-of-lipschitz-quasi-nonexpansive-mappings" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163471.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">91</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">11815</span> Quantification of Factors Contributing to Wave-In-Deck on Fixed Jacket Platforms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=C.%20Y.%20Ng">C. Y. Ng</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20Johan"> A. M. Johan</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20E.%20Kajuputra"> A. E. Kajuputra</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wave-in-deck phenomenon for fixed jacket platforms at shallow water condition has been reported as a notable risk to the workability and reliability of the platform. Reduction in reservoir pressure, due to the extraction of hydrocarbon for an extended period of time, has caused the occurrence of seabed subsidence. Platform experiencing subsidence promotes reduction of air gaps, which eventually allows the waves to attack the bottom decks. The impact of the wave-in-deck generates additional loads to the structure and therefore increases the values of the moment arms. Higher moment arms trigger instability in terms of overturning, eventually decreases the reserve strength ratio (RSR) values of the structure. The mechanics of wave-in-decks, however, is still not well understood and have not been fully incorporated into the design codes and standards. Hence, it is necessary to revisit the current design codes and standards for platform design optimization. The aim of this study is to evaluate the effects of RSR due to wave-in-deck on four-legged jacket platforms in Malaysia. Base shear values with regards to calibration and modifications of wave characteristics were obtained using SESAM GeniE. Correspondingly, pushover analysis is conducted using USFOS to retrieve the RSR. The effects of the contributing factors i.e. the wave height, wave period and water depth with regards to the RSR and base shear values were analyzed and discussed. This research proposal is important in optimizing the design life of the existing and aging offshore structures. Outcomes of this research are expected to provide a proper evaluation of the wave-in-deck mechanics and in return contribute to the current mitigation strategies in managing the issue. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wave-in-deck%20loads" title="wave-in-deck loads">wave-in-deck loads</a>, <a href="https://publications.waset.org/abstracts/search?q=wave%20effects" title=" wave effects"> wave effects</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20depth" title=" water depth"> water depth</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20jacket%20platforms" title=" fixed jacket platforms"> fixed jacket platforms</a> </p> <a href="https://publications.waset.org/abstracts/78664/quantification-of-factors-contributing-to-wave-in-deck-on-fixed-jacket-platforms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78664.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">427</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">11814</span> Sensitivity Analysis of Pile-Founded Fixed Steel Jacket Platforms</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mohamed%20Noureldin">Mohamed Noureldin</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinkoo%20Kim"> Jinkoo Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The sensitivity of the seismic response parameters to the uncertain modeling variables of pile-founded fixed steel jacket platforms are investigated using tornado diagram, first-order second-moment, and static pushover analysis techniques. The effects of both aleatory and epistemic uncertainty on seismic response parameters have been investigated for an existing offshore platform. The sources of uncertainty considered in the present study are categorized into three different categories: the uncertainties associated with the soil-pile modeling parameters in clay soil, the platform jacket structure modeling parameters, and the uncertainties related to ground motion excitations. It has been found that the variability in parameters such as yield strength or pile bearing capacity has almost no effect on the seismic response parameters considered, whereas the global structural response is highly affected by the ground motion uncertainty. Also, some uncertainty in soil-pile property such as soil-pile friction capacity has a significant impact on the response parameters and should be carefully modeled. Based on the results, it is highlighted that which uncertain parameters should be considered carefully and which can be assumed with reasonable engineering judgment during the early structural design stage of fixed steel jacket platforms. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fixed%20jacket%20offshore%20platform" title="fixed jacket offshore platform">fixed jacket offshore platform</a>, <a href="https://publications.waset.org/abstracts/search?q=pile-soil%20structure%20interaction" title=" pile-soil structure interaction"> pile-soil structure interaction</a>, <a href="https://publications.waset.org/abstracts/search?q=sensitivity%20analysis" title=" sensitivity analysis"> sensitivity analysis</a> </p> <a href="https://publications.waset.org/abstracts/17727/sensitivity-analysis-of-pile-founded-fixed-steel-jacket-platforms" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17727.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">375</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">11813</span> Effect of Chemical Additive on Fixed Abrasive Polishing of LBO Crystal with Non-Water Based Slurry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jun%20Li">Jun Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Wenze%20Wang"> Wenze Wang</a>, <a href="https://publications.waset.org/abstracts/search?q=Zhanggui%20Hu"> Zhanggui Hu</a>, <a href="https://publications.waset.org/abstracts/search?q=Yongwei%20Zhu"> Yongwei Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Dunwen%20Zuo"> Dunwen Zuo</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Non-water based fixed abrasive polishing was adopted to manufacture LBO crystal for nano precision surface quality because of its deliquescent. Ethyl alcohol was selected as the non-water based slurry solvent and ethanediamine, lactic acid, hydrogen peroxide were add in the slurry as a chemical additive, respectively. Effect of different additives with non-water based slurry on material removal rate, surface topography, microscopic appearances and surface roughness were investigated in fixed abrasive polishing of LBO crystal. The results show the best surface quality of LBO crystal with surface roughness Sa 8.2 nm and small damages was obtained by non-water based slurry with lactic acid. Non-water based fixed abrasive polishing can achieve nano precision surface quality of LBO crystal with high material removal. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=non-water%20based%20slurry" title="non-water based slurry">non-water based slurry</a>, <a href="https://publications.waset.org/abstracts/search?q=LBO%20crystal" title=" LBO crystal"> LBO crystal</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20abrasive%20polishing" title=" fixed abrasive polishing"> fixed abrasive polishing</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/20129/effect-of-chemical-additive-on-fixed-abrasive-polishing-of-lbo-crystal-with-non-water-based-slurry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/20129.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">473</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">11812</span> A General Iterative Nonlinear Programming Method to Synthesize Heat Exchanger Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rupu%20Yang">Rupu Yang</a>, <a href="https://publications.waset.org/abstracts/search?q=Cong%20Toan%20Tran"> Cong Toan Tran</a>, <a href="https://publications.waset.org/abstracts/search?q=Assaad%20Zoughaib"> Assaad Zoughaib</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The work provides an iterative nonlinear programming method to synthesize a heat exchanger network by manipulating the trade-offs between the heat load of process heat exchangers (HEs) and utilities. We consider for the synthesis problem two cases, the first one without fixed cost for HEs, and the second one with fixed cost. For the no fixed cost problem, the nonlinear programming (NLP) model with all the potential HEs is optimized to obtain the global optimum. For the case with fixed cost, the NLP model is iterated through adding/removing HEs. The method was applied in five case studies and illustrated quite well effectiveness. Among which, the approach reaches the lowest TAC (2,904,026$/year) compared with the best record for the famous Aromatic plants problem. It also locates a slightly better design than records in literature for a 10 streams case without fixed cost with only 1/9 computational time. Moreover, compared to the traditional mixed-integer nonlinear programming approach, the iterative NLP method opens a possibility to consider constraints (such as controllability or dynamic performances) that require knowing the structure of the network to be calculated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=heat%20exchanger%20network" title="heat exchanger network">heat exchanger network</a>, <a href="https://publications.waset.org/abstracts/search?q=synthesis" title=" synthesis"> synthesis</a>, <a href="https://publications.waset.org/abstracts/search?q=NLP" title=" NLP"> NLP</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a> </p> <a href="https://publications.waset.org/abstracts/138480/a-general-iterative-nonlinear-programming-method-to-synthesize-heat-exchanger-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138480.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">11811</span> On Tarski’s Type Theorems for L-Fuzzy Isotone and L-Fuzzy Relatively Isotone Maps on L-Complete Propelattices</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Franti%C5%A1ek%20V%C4%8Dela%C5%99">František Včelař</a>, <a href="https://publications.waset.org/abstracts/search?q=Zuzana%20P%C3%A1t%C3%ADkov%C3%A1"> Zuzana Pátíková</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Recently a new type of very general relational structures, the so called (L-)complete propelattices, was introduced. These significantly generalize complete lattices and completely lattice L-ordered sets, because they do not assume the technically very strong property of transitivity. For these structures also the main part of the original Tarski’s fixed point theorem holds for (L-fuzzy) isotone maps, i.e., the part which concerns the existence of fixed points and the structure of their set. In this paper, fundamental properties of (L-)complete propelattices are recalled and the so called L-fuzzy relatively isotone maps are introduced. For these maps it is proved that they also have fixed points in L-complete propelattices, even if their set does not have to be of an awaited analogous structure of a complete propelattice. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fixed%20point" title="fixed point">fixed point</a>, <a href="https://publications.waset.org/abstracts/search?q=L-complete%20propelattice" title=" L-complete propelattice"> L-complete propelattice</a>, <a href="https://publications.waset.org/abstracts/search?q=L-fuzzy%20%28relatively%29%20isotone%20map" title=" L-fuzzy (relatively) isotone map"> L-fuzzy (relatively) isotone map</a>, <a href="https://publications.waset.org/abstracts/search?q=residuated%20lattice" title=" residuated lattice"> residuated lattice</a>, <a href="https://publications.waset.org/abstracts/search?q=transitivity" title=" transitivity"> transitivity</a> </p> <a href="https://publications.waset.org/abstracts/38198/on-tarskis-type-theorems-for-l-fuzzy-isotone-and-l-fuzzy-relatively-isotone-maps-on-l-complete-propelattices" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/38198.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">279</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">11810</span> Continuous Fixed Bed Reactor Application for Decolourization of Textile Effluent by Adsorption on NaOH Treated Eggshell</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Chafi">M. Chafi</a>, <a href="https://publications.waset.org/abstracts/search?q=S.%20Akazdam"> S. Akazdam</a>, <a href="https://publications.waset.org/abstracts/search?q=C.%20Asrir"> C. Asrir</a>, <a href="https://publications.waset.org/abstracts/search?q=L.%20Sebbahi"> L. Sebbahi</a>, <a href="https://publications.waset.org/abstracts/search?q=B.%20Gourich"> B. Gourich</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Barka"> N. Barka</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Essahli"> M. Essahli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fixed bed adsorption has become a frequently used industrial application in wastewater treatment processes. Various low cost adsorbents have been studied for their applicability in treatment of different types of effluents. In this work, the intention of the study was to explore the efficacy and feasibility for azo dye, Acid Orange 7 (AO7) adsorption onto fixed bed column of NaOH Treated eggshell (TES). The effect of various parameters like flow rate, initial dye concentration, and bed height were exploited in this study. The studies confirmed that the breakthrough curves were dependent on flow rate, initial dye concentration solution of AO7 and bed depth. The Thomas, Yoon–Nelson, and Adams and Bohart models were analysed to evaluate the column adsorption performance. The adsorption capacity, rate constant and correlation coefficient associated to each model for column adsorption was calculated and mentioned. The column experimental data were fitted well with Thomas model with coefficients of correlation R2 ≥0.93 at different conditions but the Yoon–Nelson, BDST and Bohart–Adams model (R2=0.911), predicted poor performance of fixed-bed column. The (TES) was shown to be suitable adsorbent for adsorption of AO7 using fixed-bed adsorption column. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption%20models" title="adsorption models">adsorption models</a>, <a href="https://publications.waset.org/abstracts/search?q=acid%20orange%207" title=" acid orange 7"> acid orange 7</a>, <a href="https://publications.waset.org/abstracts/search?q=bed%20depth" title=" bed depth"> bed depth</a>, <a href="https://publications.waset.org/abstracts/search?q=breakthrough" title=" breakthrough"> breakthrough</a>, <a href="https://publications.waset.org/abstracts/search?q=dye%20adsorption" title=" dye adsorption"> dye adsorption</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed-bed%20column" title=" fixed-bed column"> fixed-bed column</a>, <a href="https://publications.waset.org/abstracts/search?q=treated%20eggshell" title=" treated eggshell"> treated eggshell</a> </p> <a href="https://publications.waset.org/abstracts/43408/continuous-fixed-bed-reactor-application-for-decolourization-of-textile-effluent-by-adsorption-on-naoh-treated-eggshell" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43408.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">377</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">11809</span> Preliminary Design and Aerodynamic Study of Hybrid Aerial Vehicle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Pratyush%20Agnihotri">Pratyush Agnihotri</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a comprehensive overview of the conceptual design process for a fixed-wing vertical take-off and landing (VTOL) unmanned aerial vehicle (UAV). Fixed-wing VTOL UAVs combine the advantages of rotary-wing aircraft, such as vertical take-off and landing capabilities, with the efficiency and speed of fixed-wing flight. The primary objective of this study is to explore the aerodynamic design principles that optimize performance parameters, including range, endurance, and stability while maintaining the VTOL capability. The design process involves selecting appropriate airfoils, optimizing wing configurations, and integrating propulsion systems suitable for both hovering and forward flight. Analytical methods are employed to evaluate aerodynamic performance, with a focus on lift-to-drag ratio, power requirements, and control strategies. The results highlight the challenges and trade-offs inherent in designing such hybrid aircraft, particularly in balancing the conflicting requirements of VTOL and fixed-wing flight. This study contributes to the development of efficient, versatile UAVs capable of operating in diverse environments. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fixed%20wing" title="fixed wing">fixed wing</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid" title=" hybrid"> hybrid</a>, <a href="https://publications.waset.org/abstracts/search?q=VTOL" title=" VTOL"> VTOL</a>, <a href="https://publications.waset.org/abstracts/search?q=UAV" title=" UAV"> UAV</a> </p> <a href="https://publications.waset.org/abstracts/192215/preliminary-design-and-aerodynamic-study-of-hybrid-aerial-vehicle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192215.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">20</span> </span> </div> </div> <ul class="pagination"> <li 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