A Modified Analytical Model for Simulating Chloride Ingress into Concrete Structures Compared with the Experimental LIBS Based Profiles

Issues 1-2 Volume 17

T.D. Le1, a), P. Konecny b), M.B. Lierenfeld c), M. Hornakova b) and P. Lehner b) a) Faculty of Civil Engineering, Saigon Technology University, 180 Cao Lo Str., Ward 4, Dist. 8, Ho Chi Minh City 73018, Vietnam; b) Faculty of Civil Engineering, VSB-Technical University of Ostrava, 708 33 Ostrava-Poruba, Czech Republic c) Valtest AG, […]

A New Conjugate Gradient Method with Descent Properties and its Application to Regression analysis

Issues 1-2 Volume 14

Ibrahim Mohammed Sulaiman1, Mustafa Mamat1* 1Faculty of Informatics and Computing, Universiti Sultan Zainal Abidin, 21300 Terengganu, Malaysia corresponding author: *must@unisza.edu.my sulaimanib@unisza.edu.my Submitted 24/07/2019, Revised 13/01/2020, 2nd revised: 11/06/2020, accepted: 09/09/2020 Abstract: The area of unconstrained optimization has been enjoying vivid growth recently, with significant progress on numerical innovative techniques. The classical technique for obtaining the

Solvability of a Hybrid Model for a Vertical Slender Structure

Issues 3-4 Volume 04

Date of Online Publication: 02/11/2010 Keywords: Existence results, beam vibration, damping, hybrid model. Abstract: We consider the solvability of a hybrid model for the vibration of a vertical slender structure mounted on an elastic seating. The slender structure is modeled as a Rayleigh beam and gravity is taken into account. The seating and foundation block

The Role of Structured Matrices for the Construction of Integration Lattices

Issue 3 Volume 01

Date of Online Publication: 22/12/2006 Keywords: multivariate numerical integration, quadrature, cubature, lattice rules Authors: R. Cools, D. Nuyens Pages: 257-272 An overview is presented of the role played by structured matrices in the construction of lattice rules for numerical integration. Two methods which make use of (skew-)circulant matrices are discussed. The first method is for

DEVELOPMENT OF THE THEORY FOR MODELING AND RESEARCH OF ADVANCED TECHNOLOGIES FOR ENRICHING BIOFUEL CELLS WITH GENERATOR GASES

Issues 1-2 Volume 13

V.N. Kovalnogov1,2, T.V. Karpukhina2, M.S. Boyarkin2 1Group of Numerical and Applied Mathematics on Urgent Problems of Energy and Power Engineering, Faculty of Power Engineering, Ulyanovsk State Technical University, Severny Venets Street 32, 432027 Ulyanovsk, Russian Federation 2Department of Heat-and-Power Engineering, Faculty of Power Engineering, Ulyanovsk State Technical University, Severny Venets Street 32, 432027 Ulyanovsk, Russian

Modified Finite Integration Method Using Chebyshev Polynomial for Solving Linear Differential Equations

Issues 3-4 Volume 12

R. Boonklurb1, A. Duangpan2 and T. Treeyaprasert3 1,2Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand 3Department of Mathematics and Statistics, Thammasat University, Rangsit Center, Pathumthani 12120, Thailand Received 10 January 2018; accepted in revised form 27 August 2018 Abstract: We propose a modified finite integration method (FIM) by using

Approximation Capabilities of Neural Networks

Issues 3-4 Volume 03

Abstract: Algorithm-based computers are programmed, i.e., there must be a set of rules which, a priori, characterize the calculation that is implemented by the computer. Neural computation, based on neural networks, solve problems by learning, they absorb experience, and modify their internal structure in order to accomplish a given task. In the learning process, the

New Developments on Online Generation of Trajectories in Quadruped Robots

Issues 1-2 Volume 07

Carla M.A. Pinto2 *,Cristina P. Santos**, Diana Rocha*, Vitor Matos** * Instituto Superior de Engenharia do Porto and Centro de Matematica da Universidade do Porto Rua Dr Antonio Bernardino de Almeida, 431, 4200-072 Porto, Portugal ** Dept. Electronica Industrial and Centro Algoritmi Universidade do Minho Campus de Azurem 4800-058 Guimaraes, Portugal Received 30 January, 2011;

Evaluation of Turbulence Models for Flow Over a Thermally Loaded Hill

Issues 3-4 Volume 13

Ivan Kolo?1, a), Lenka Lausov�1, b) and Vladim�ra Michalcov�1, c) 1V?B – Technical University of Ostrava, Faculty of Civil Engineering, L. Pod�?t? 1875/17, 708 33 Ostrava-Poruba, Czech Republic a)Corresponding author: ivan.kolos@vsb.cz, b)lenka.lausova@vsb.cz, c)vladimira.michalcova@vsb.cz Abstract. CFD models are widely used for modelling of flow over objects, as they provide very good results of the turbulence characteristics

Adjoint Sensitivity Analysis of Neutral Delay Differential Models

Issues 1-2 Volume 05

Fathalla A. Rihan2 Department of Mathematical Sciences, College of Science, United Arab Emirates University, Al Ain, 17551, UAE Received 11 October, 2009; accepted in revised form 21 January, 2010 Abstract: In this short paper, we investigate sensitivity and robustness of neutral delay differential models to small perturbations in the parameters that occur in the models,

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