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Computation, Volume 8, Issue 4

2020 December - 24 articles

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Articles (24)

  • Article
  • Open Access
5 Citations
3,387 Views
13 Pages

Modeling Interactions between Graphene and Heterogeneous Molecules

  • Kyle Stevens,
  • Thien Tran-Duc,
  • Ngamta Thamwattana and
  • James M. Hill

The Lennard–Jones potential and a continuum approach can be used to successfully model interactions between various regular shaped molecules and nanostructures. For single atomic species molecules, the interaction can be approximated by assumin...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
9 Citations
3,772 Views
24 Pages

Alzheimer’s disease (AD) is a progressive neurodegenerative brain disorder. One of the important therapeutic approaches of AD is the inhibition of β-site APP cleaving enzyme-1 (BACE1). This enzyme plays a central role in the synthesis of t...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
2 Citations
3,467 Views
12 Pages

In computational seismology, receiver functions represent the impulse response for the earth structure beneath a seismic station and, in general, these are functionals that show several seismic phases in the time-domain related to discontinuities wit...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
17 Citations
5,073 Views
15 Pages

Classification of Categorical Data Based on the Chi-Square Dissimilarity and t-SNE

  • Luis Ariosto Serna Cardona,
  • Hernán Darío Vargas-Cardona,
  • Piedad Navarro González,
  • David Augusto Cardenas Peña and
  • Álvaro Ángel Orozco Gutiérrez

The recurrent use of databases with categorical variables in different applications demands new alternatives to identify relevant patterns. Classification is an interesting approach for the recognition of this type of data. However, there are a few a...

(This article belongs to the Special Issue Explainable Computational Intelligence, Theory, Methods and Applications)
  • Article
  • Open Access
5 Citations
4,760 Views
26 Pages

Many modern applications are modeled using graphs of some kind. Given a graph, reachability, that is, discovering whether there is a path between two given nodes, is a fundamental problem as well as one of the most important steps of many other algor...

  • Article
  • Open Access
8 Citations
3,906 Views
12 Pages

Simulation of Diffusion Bonding of Different Heat Resistant Nickel-Base Alloys

  • Albert R. Khalikov,
  • Evgeny A. Sharapov,
  • Vener A. Valitov,
  • Elvina V. Galieva and ,
  • Elena A. Korznikova and
  • Sergey V. Dmitriev
  • + 1 author+ 0 author

Currently, an important fundamental problem of practical importance is the production of high-quality solid-phase compounds of various metals. This paper presents a theoretical model that allows one to study the diffusion process in nickel-base refra...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
3 Citations
4,098 Views
15 Pages

This paper explores the flow structure, mean/turbulent statistical characteristics of the vector field and entrainment of round jets issued from a smooth contracting nozzle at low nozzle exit velocities (1.39–6.44 m/s). The motivation of the st...

  • Article
  • Open Access
9 Citations
3,056 Views
27 Pages

In this paper, the Combined Heat and Power Dynamic Economic Emissions Dispatch (CHPDEED) problem formulation is considered. This problem is a complicated nonlinear mathematical formulation with multiple, conflicting objective functions. The aim of th...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
14 Citations
5,066 Views
17 Pages

A Discrete Particle Swarm Optimization to Solve the Put-Away Routing Problem in Distribution Centres

  • Rodrigo Andrés Gómez-Montoya,
  • Jose Alejandro Cano,
  • Pablo Cortés and
  • Fernando Salazar

Put-away operations typically consist of moving products from depots to allocated storage locations using either operators or Material Handling Equipment (MHE), accounting for important operative costs in warehouses and impacting operations efficienc...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
4 Citations
4,117 Views
30 Pages

Carbon capture, utilization, and storage (CCUS) describes a set of technically viable processes to separate carbon dioxide (CO2) from industrial byproduct streams and inject it into deep geologic formations for long-term storage. Legacy wells located...

(This article belongs to the Section Computational Engineering)
  • Editorial
  • Open Access
1 Citations
3,461 Views
2 Pages

This brief Editorial is dedicated to announcing the Special Issue “Computational Insights into Industrial Chemistry”. The Special Issue covers the most recent progress in the rapidly growing field of computational chemistry, and the appli...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
4 Citations
4,273 Views
13 Pages

Precise control of the flow rate of fluids stored in multiple tank systems is an important task in process industries. On this reason coupled tanks are considered popular paradigms in studies because they form strongly nonlinear systems that challeng...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
10 Citations
6,219 Views
13 Pages

All-Nitrogen Cages and Molecular Crystals: Topological Rules, Stability, and Pyrolysis Paths

  • Konstantin P. Katin,
  • Valeriy B. Merinov,
  • Alexey I. Kochaev,
  • Savas Kaya and
  • Mikhail M. Maslov

We combined ab initio molecular dynamics with the intrinsic reaction coordinate in order to investigate the mechanisms of stability and pyrolysis of N4 ÷ N120 fullerene-like nitrogen cages. The stability of the cages was evaluated in terms of...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
9 Citations
6,912 Views
34 Pages

A Modified Heart Dipole Model for the Generation of Pathological ECG Signals

  • Mario Versaci,
  • Giovanni Angiulli and
  • Fabio La Foresta

In this paper, we introduce a new dynamic model of simulation of electrocardiograms (ECGs) affected by pathologies starting from the well-known McSharry dynamic model for the ECGs without cardiac disorders. In particular, the McSharry model has been...

(This article belongs to the Section Computational Biology)
  • Article
  • Open Access
2,836 Views
15 Pages

The Influence of Pressure on the Formation of FM/AF Configurations in LSMO Films: A Monte Carlo Approach

  • Hugo Hernán Ortiz-Álvarez,
  • Francy Nelly Jiménez-García,
  • Carolina Márquez-Narváez,
  • José Dario Agudelo-Giraldo and
  • Elisabeth Restrepo-Parra

In this work, Monte Carlo simulations of magnetic properties of thin films, including the influence of an external pressure, are presented. These simulations were developed using a Hamiltonian composed by terms that represent the exchange interaction...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
6 Citations
5,839 Views
10 Pages

Spatial and Temporal Validation of a CFD Model Using Residence Time Distribution Test in a Tubular Reactor

  • José Rivas,
  • M. Constanza Sadino-Riquelme,
  • Ignacio Garcés,
  • Andrea Carvajal and
  • Andrés Donoso-Bravo

Computational fluid dynamic (CFD) has been increasingly exploited for the design and optimization of (bio)chemical processes. Validation is a crucial part of any modeling application. In CFD, when validation is done, complex and expensive techniques...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
3 Citations
4,295 Views
20 Pages

Explicit expressions are obtained for sensitivity coefficients to separately estimate temperature-dependent thermophysical properties, such as specific heat and thermal conductivity, in two-dimensional inverse transient heat conduction problems for b...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
8 Citations
4,274 Views
32 Pages

Self-Adjusting Variable Neighborhood Search Algorithm for Near-Optimal k-Means Clustering

  • Lev Kazakovtsev,
  • Ivan Rozhnov,
  • Aleksey Popov and
  • Elena Tovbis

The k-means problem is one of the most popular models in cluster analysis that minimizes the sum of the squared distances from clustered objects to the sought cluster centers (centroids). The simplicity of its algorithmic implementation encourages re...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
11 Citations
8,531 Views
26 Pages

Modeling of Isocyanate Synthesis by the Thermal Decomposition of Carbamates

  • Ratmir Dashkin,
  • Georgii Kolesnikov,
  • Pavel Tsygankov,
  • Igor Lebedev and ,
  • Artem Lebedev,
  • Natalia Menshutina,
  • Khusrav Ghafurov and
  • Abakar Bagomedov
  • + 3 authors+ 0 author

The presented work is devoted to isocyanate synthesis by the thermal decomposition of carbamates model. The work describes the existing isocyanate-obtaining processes and the main problems in the study of isocyanate synthesis by the thermal decomposi...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
7 Citations
5,205 Views
21 Pages

Quadratic programming problems (QPs) frequently appear in control engineering. For use on embedded platforms, a QP solver implementation is required in the programming language C. A new solver for quadratic optimization problems, EmbQP, is described,...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
1 Citations
3,508 Views
24 Pages

Complex Modelling and Design of Catalytic Reactors Using Multiscale Approach—Part 2: Catalytic Reactions Modelling with Cellular Automata Approach

  • Natalia Menshutina,
  • Igor Lebedev,
  • Evgeniy Lebedev,
  • Andrey Kolnoochenko and ,
  • Alexander Troyankin,
  • Ratmir Dashkin,
  • Michael Shishanov,
  • Pavel Flegontov and
  • Maxim Burdeyniy
  • + 4 authors+ 0 author

The presented work is devoted to reactions of obtaining 4,4’-Diaminodiphenylmethane (MDA) in the presence of a catalyst model. The work describes the importance of studying the MDA obtaining process and the possibility of the cellular automata...

(This article belongs to the Section Computational Chemistry)
  • Article
  • Open Access
44 Citations
10,740 Views
15 Pages

Biomass Steam Gasification: A Comparison of Syngas Composition between a 1-D MATLAB Kinetic Model and a 0-D Aspen Plus Quasi-Equilibrium Model

  • Vera Marcantonio,
  • Andrea Monforti Ferrario,
  • Andrea Di Carlo,
  • Luca Del Zotto and ,
  • Danilo Monarca and
  • Enrico Bocci
  • + 1 author+ 0 author

Biomass is one of the most widespread and accessible energy source and steam gasification is one of the most important processes to convert biomass into combustible gases. However, to date the difference of results between the main models used to pre...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
38 Citations
8,970 Views
14 Pages

Causal Modeling of Twitter Activity during COVID-19

  • Oguzhan Gencoglu and
  • Mathias Gruber

Understanding the characteristics of public attention and sentiment is an essential prerequisite for appropriate crisis management during adverse health events. This is even more crucial during a pandemic such as COVID-19, as primary responsibility o...

(This article belongs to the Special Issue Computation to Fight SARS-CoV-2 (CoVid-19))
  • Article
  • Open Access
3,342 Views
13 Pages

We propose a method to parallelize a 3D incompressible Navier–Stokes solver that uses a fully implicit fractional-step method to simulate sediment transport in prismatic channels. The governing equations are transformed into generalized curvili...

(This article belongs to the Section Computational Engineering)
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Computation - ISSN 2079-3197