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142 articles for “Numerical Simulation”
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Research ArticleOpen accessIn the abstractA Robust Rescaled Moment Test for Normality in RegressionMd. Sohel Rana, Habshah Midi, A.H.M. Rahmatullah ImonProblem statement: Most of the statistical procedures heavily depend on normality assumption of observations. In regression, we assumed that the random disturbances were normally distributed. Since the disturbances were unobserved, normality tests were done on regression residuals. But it is now evident that normality tests on residuals suffer from superimposed normality and often possess very poor power. Approach: This study … …Journal of Mathematics and Statistics, Vol. 5, Issue 1 · 31 Mar 2009 · 8,264 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Probability Density Function of the Test Statistic for One Nonlinear GLR Detector Arising from fMRIFangyuan NanRecently an important and interesting nonlinear generalized likelihood ratio (GLR) detector emerged in functional magnetic resonance imaging (fMRI) data processing. However, the study of that detector is incomplete: the probability density function (pdf) of the test statistic was draw from numerical simulations without much theoretical support and is therefore, not firmly grounded. This correspondence presents more accurate (asymptotic) closed form … …Journal of Mathematics and Statistics, Vol. 3, Issue 2 · 30 Jun 2007 · 7,108 accessesView PDFCite
Research ArticleOpen accessIn the abstractEpidemiological Models Applied to Viruses in Computer NetworksJos R.S. Piqueira, Betyna F. Navarro, Luiz H.A. MonteiroTo investigate the use of classical epidemiological models for studying computer virus propagation we described analogies between computer and population disease propagation using SIR (Susceptible-Infected-Removed) epidemiological models. By modifying these models with the introduction of anti-viral individuals we analyzed the stability of the disease free equilibrium points. Consequently, the basal virus reproduction rate gives some theoretical hints about how to … …Journal of Computer Science, Vol. 1, Issue 1 · 31 Mar 2005 · 7,582 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordStructural Integrity Assessment of High-Pressure Vessels for Hydrogen Storage Using Finite Element AnalysisPinar Mert Cuce, Erdem Cuce et al.Hydrogen is not only present in the structure of most substances but also attracts attention as a clean energy source. The fact that hydrogen only releases water through combustion and possesses high energy potential provides a significant advantage as an alternative energy source. This paper presents a numerical investigation into the stress and deformation behaviour of high-pressure vessels used in … …Energy Research Journal, Vol. 15, Issue 1 · 13 Jun 2026 · 1,505 accessesView PDFCite
Case ReportOpen accessAll words, across the recordSimulation of Stone Column Ground Improvement (Comparison between Axisymmetric and Plane Strain)Maryam Gaber, Anuar Kasa, Norinah Abdul-Rahman, Jamal AlsharefMost of the numerical studies on stone columns are based on the unit cell concept. However, the impact of interactions between adjacent columns and between the columns and the surrounding soil has not been investigated thoroughly. In this study, the finite element software, PLAXIS-2D-V8.2, was used to simulate a stone column as a unit cell and as a plane strain … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 16 Jan 2018 · 8,157 accessesView PDFCite
Research NotesOpen accessAll words, across the recordTurbulent-Fluid-Based Simulation of Dynamic Liquefaction Using Large Deformation Analysis of Solid PhaseRohollah TaslimianTo accurately simulate the cyclic liquefaction phenomenon, it is necessary to establish a well-defined coupling between the solid particles and the high-velocity percolating pore fluid. For this purpose, the existing literature extensively examines large deformation liquefaction analyses for the solid phase, regardless of the fluid flow nonlinearity. On the other hand, the transient fluid pressure gradient governed by the turbulence … …American Journal of Engineering and Applied Sciences, Vol. 17, Issue 2 · 22 Feb 2024 · 6,024 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordNumerical Investigation of Silica Gel-Water Solar Adsorption Cooling System with SimulinkGhilen Najeh, Messai Souad, Gabsi Slimane et al.This paper aims to study a numerical model of an adsorption chiller driven with solar energy that is confronted to experimental measurements. This article deals with numerical study of refrigeration systems using a pair of silica gel and water with simulink. The results include the temperature of desorber, the temperature of chilled, cooling and hot water, temperature of two adsorption/desorption … …American Journal of Applied Sciences, Vol. 14, Issue 8 · 10 Aug 2017 · 8,496 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordRobustness of XFEM Method for the Simulation of Cracks Propagation in Fracture Mechanics ProblemsAniello Riccio, Umberto Caruso, Antonio Raimondo, Andrea SellittoIn the present paper a numerical sensitivity analysis is presented with the aim to assess the effectiveness of the X-FEM method for fracture mechanics applications. Different test cases have been adopted for the numerical analyses to point out the X-FEM method behavior in 2-D and 3-D elastic and elasto-plastic conditions. Comparisons with a standard ductile damage model have been carried … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 15 Aug 2016 · 8,295 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordDouble Diffusive Convection Heat and Moisture Transfer Inside a Planted Roof Building Under Hot-Humid Climate: Case of Lomé City in West AfricaHodo-Abalo Samah, Magolmèèna Banna, Belkacem ZeghmatiPlanted roofs have been investigated as a passive cooling technology for energy efficiency purposes in buildings. More quantitative data on this topic are required to solve a lack of information for many specific regions. This study is focused on a numerical investigation of the thermal comfort inside a green roof rectangular ventilated cavity in a hot and humid climate like … …American Journal of Applied Sciences, Vol. 19, Issue 1 · 7 Feb 2022 · 6,997 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordNumerical Investigation of the Impact of Punch Speed on the Deep Drawing of Square Aluminum Sheet Using Finite Element MethodEhsan Hedayati, Arefeh Hedayati, Mohammad Vahedi, Shirko FaroughiThis study examines the Deep Drawing Process (DDP) of square aluminum sheets, emphasizing its applications across various industries, including medical devices. The process is simulated using ABAQUS finite element software, analyzing the effects of parameters like punch speed and friction on the final results. One of the important aspects of this study is the use of the Forming Limit Diagram … …American Journal of Engineering and Applied Sciences, Vol. 18, Issue 1 · 6 Feb 2025 · 8,719 accessesView PDFCite