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Computation, Volume 11, Issue 1

January 2023 - 14 articles

Cover Story: Sound-absorbing panels created with a perforated front and a sound-absorbing material on the back are used in various constructions. The present work considers an acoustic panel in two constructive types and consisting of four layers: first, a front panel with a perforated sheet, polyethylene foam foil, and a basalt wool board with two different thicknesses and, second, a back panel with the non-perforated sheet. Due to the different thicknesses of the basalt wool board, the variations in acoustic impedance and acoustic absorption can be highlighted for the multilayer structure of the acoustic panel. A method was developed to predict the sound absorption coefficient, namely the prediction of the sound absorption coefficient using the transfer matrix method (PSAC-TMM). View this paper
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Articles (14)

  • Article
  • Open Access
2 Citations
2,825 Views
11 Pages

The paper is devoted to the theoretical analysis and numerical implementation of a mathematical model of a nonlinear reaction–diffusion system on the COMSOL Multiphysics platform. The applied problem of the computer simulation of polarization s...

  • Article
  • Open Access
3 Citations
2,746 Views
27 Pages

One of the effectual text classification approaches for learning extensive information is incremental learning. The big issue that occurs is enhancing the accuracy, as the text is comprised of a large number of terms. In order to address this issue,...

  • Article
  • Open Access
4 Citations
3,389 Views
13 Pages

With the development and proliferation of unmanned weapons systems, path planning is becoming increasingly important. Existing path-planning algorithms mainly assume a well-known environment, and thus pre-planning is desirable, but the actual ground...

  • Article
  • Open Access
2 Citations
2,363 Views
13 Pages

Modified Kleene Star Algorithm Using Max-Plus Algebra and Its Application in the Railroad Scheduling Graphical User Interface

  • Ema Carnia,
  • Rinaldi Wilopo,
  • Herlina Napitupulu,
  • Nursanti Anggriani and
  • Asep K. Supriatna

In max-plus algebra, some algorithms for determining the eigenvector of irreducible matrices are the power algorithm and the Kleene star algorithm. In this research, a modified Kleene star algorithm will be discussed to compensate for the disadvantag...

  • Article
  • Open Access
5 Citations
2,302 Views
20 Pages

The disposal of infectious waste remains one of the most severe medical, social, and environmental problems in almost every country. Choosing the right location and arranging the most suitable transport route is one of the main issues in managing haz...

  • Article
  • Open Access
1 Citations
2,187 Views
16 Pages

Improved Computational Prediction of the Electrochemical Reduction Potential of Twenty 3-Aryl-Quinoxaline-2-Carbonitrile 1,4-Di-N-Oxide Derivatives

  • Shambhu Bhattarai,
  • Pradeep Mareta,
  • Philip W. Crawford,
  • Jonathan M. Kessler and
  • Christina M. Ragain

The ability of density functional theory (DFT) using the functional B3LYP with the cc-pVTZ basis set to accurately predict the electrochemical properties of 20 3-aryl-quinoxaline-2-carbonitrile 1,4-di-N-oxide derivatives in dimethylformamide (DMF) wa...

  • Article
  • Open Access
2,240 Views
21 Pages

Many mechanical systems manifest nonlinear behavior under nonstationary random excitations. Neglecting this nonlinearity in the modeling of a dynamic system would result in unacceptable results. However, it is challenging to find exact solutions to n...

  • Article
  • Open Access
4 Citations
3,161 Views
21 Pages

Sparse Reconstruction Using Hyperbolic Tangent as Smooth l1-Norm Approximation

  • Hassaan Haider,
  • Jawad Ali Shah,
  • Kushsairy Kadir and
  • Najeeb Khan

In the Compressed Sensing (CS) framework, the underdetermined system of linear equation (USLE) can have infinitely many possible solutions. However, we intend to find the sparsest possible solution, which is l0-norm minimization. However, finding an...

  • Article
  • Open Access
2,173 Views
9 Pages

Dispersive FSO Performance Estimation with Gaussian Pulses and Laplace Modeled Time Jitter

  • P. J. Gripeos,
  • D. Oreinos,
  • D. Kriempardis,
  • A. D. Tsigopoulos,
  • E. Kapotis,
  • A. Katsis and
  • H. E. Nistazakis

FSO communications tend to be one of most convenient, wireless, high-data-rate communications technologies of global telecom networking, and they are implemented and operated with low-cost resources. Despite their advantages, FSO systems’ perfo...

  • Article
  • Open Access
24 Citations
5,941 Views
19 Pages

Modeling of Quantum Dots with the Finite Element Method

  • G.A. Mantashian,
  • P.A. Mantashyan and
  • D.B. Hayrapetyan

Considering the increasing number of experimental results in the manufacturing process of quantum dots (QDs) with different geometries, and the fact that most numerical methods that can be used to investigate quantum dots with nontrivial geometries r...

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Computation - ISSN 2079-3197Creative Common CC BY license