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Computation, Volume 12, Issue 8

2024 August - 19 articles

Cover Story: The design solution of the poly-articulated robot can be easily adapted for use in hard-to-reach places or special environments. It consists of a flexible unit and a drive unit. The analysis of the kinematic and dynamic response of the flexible unit is conducted using multibody systems theory, finite element modeling and experimental model testing. The robot workspace was defined by the mobility limits of the flexible unit, and this was designed in a modular form in order to have simplified control for the robot configuration and its evaluated workspace. The deformed shape of the flexible unit seems to have a snake-like form. The command and control unit is equipped with motion sensors, which allow position identification for each module of the flexible unit. View this paper
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Articles (19)

  • Article
  • Open Access
1,221 Views
23 Pages

Among many other applications, electronic converters can be used with sensors with analogue outputs (DC voltage). This article presents an analogue computation converter with two DC voltages at the inputs (one input changes the frequency of the outpu...

  • Article
  • Open Access
1,610 Views
10 Pages

Dislocation Interactions with Hcp- and χ-Phase Particles in Tungsten: Molecular Dynamics Insights into Mechanical Strengthening Mechanisms

  • Yu. R. Sharapova,
  • A. M. Kazakov,
  • R. I. Babicheva,
  • A. S. Semenov,
  • A. A. Izosimov and
  • E. A. Korznikova

Our study investigates the interaction of dislocations with hexagonal close-packed (hcp) and chi-phase (χ) particles in body-centred cubic (bcc) tungsten (W) using molecular dynamics simulations. The research aims to understand how these interact...

  • Review
  • Open Access
1 Citations
6,020 Views
27 Pages

In the contemporary era, dizziness is a prevalent ailment among patients. It can be caused by either vestibular neuritis or a stroke. Given the lack of diagnostic utility of instrumental methods in acute isolated vertigo, the differentiation of vesti...

  • Review
  • Open Access
7 Citations
6,311 Views
18 Pages

Traditional mean-variance (MV) models, considered effective in stable conditions, often prove inadequate in uncertain market scenarios. Therefore, there is a need for more robust and better portfolio optimization methods to handle the fluctuations an...

  • Article
  • Open Access
2 Citations
2,091 Views
20 Pages

Numerical Modeling and Simulation of Vehicular Crashes into Three-Bar Metal Bridge Rail

  • Howie Fang,
  • Christopher Jaus,
  • Qian Wang,
  • Emre Palta,
  • Lukasz Pachocki and
  • Dawid Bruski

Advanced finite element (FE) modeling and simulations were performed on vehicular crashes into a three-bar metal bridge rail (TMBR). The FE models of a sedan, a pickup truck, and a TMBR section were adopted in the crash simulations subject to Manual...

  • Article
  • Open Access
3 Citations
1,792 Views
7 Pages

By the Bagchi theorem, the Riemann hypothesis (all non-trivial zeros lie on the critical line) is equivalent to the self-approximation of the function ζ(s) by shifts ζ(s+iτ). In this paper, it is determined that the Riemann hypothesis i...

  • Article
  • Open Access
5 Citations
1,928 Views
28 Pages

High-variant wind speeds cause aberrations in wind power systems and compromise the effective operation of wind farms. A single model cannot capture the inherent wind speed randomness and complexity. In the proposed hybrid strategy, wavelet transform...

  • Article
  • Open Access
2 Citations
2,284 Views
13 Pages

In this research, a streamlined numerical approach designed for the quick estimation of temperature profiles across the finite thickness of a hemispherical dome subjected to aerodynamic heating is introduced. Hemispherical domes, with their advantage...

  • Article
  • Open Access
1 Citations
1,949 Views
18 Pages

In this research article, we demonstrate the generalized expansion method to investigate nonlinear integro-partial differential equations via an efficient mathematical method for generating abundant exact solutions for two types of applicable nonline...

  • Article
  • Open Access
10 Citations
1,862 Views
20 Pages

Evaluation of the Dynamics of Psychological Panic Factor, Glucose Risk and Estrogen Effects on Breast Cancer Model

  • Zahraa Aamer,
  • Shireen Jawad,
  • Belal Batiha,
  • Ali Hasan Ali,
  • Firas Ghanim and
  • Alina Alb Lupaş

Contracting cancer typically induces a state of terror among the individuals who are affected. Exploring how glucose excess, estrogen excess, and anxiety work together to affect the speed at which breast cancer cells multiply and the immune system&rs...

  • Review
  • Open Access
5 Citations
3,598 Views
15 Pages

Systematic Review of Forecasting Models Using Evolving Fuzzy Systems

  • Sebastian-Camilo Vanegas-Ayala,
  • Julio Barón-Velandia and
  • Efren Romero-Riaño

Currently, the increase in devices capable of continuously collecting data on non-stationary and dynamic variables affects predictive models, particularly if they are not equipped with algorithms capable of adapting their parameters and structure, ca...

  • Article
  • Open Access
2 Citations
1,690 Views
18 Pages

The problem of finding the global minimum of a function is applicable to a multitude of real-world problems and, hence, a variety of computational techniques have been developed to efficiently locate it. Among these techniques, evolutionary technique...

  • Article
  • Open Access
5 Citations
1,598 Views
22 Pages

The primary goal of this research is to lessen the high vibration that the model causes by using an appropriate vibration control. Thus, we begin by implementing various controller types to investigate their impact on the system’s reaction and...

  • Article
  • Open Access
1 Citations
1,850 Views
27 Pages

A Dynamic Analysis of a Poly-Articulated Robot

  • Sorin Dumitru,
  • Cristian Copilusi,
  • Nicolae Dumitru and
  • Ionut Geonea

This paper studies the kinematics and dynamics of a poly-articulated robot. The robot can be used in hardly accessible places and special environments. The poly-articulated robot includes two main parts: a flexible unit and an actuation unit. The fle...

  • Article
  • Open Access
1 Citations
1,367 Views
22 Pages

A Novel Mixed Finite/Infinite Dimensional Port–Hamiltonian Model of a Mechanical Ventilator

  • Milka C. I. Madahana,
  • John E. D. Ekoru and
  • Otis T. C. Nyandoro

Mechanical ventilation is a life-saving treatment for critically ill patients who are struggling to breathe independently due to injury or disease. Globally, per year, there has always been a large number of individuals who have required mechanical v...

  • Article
  • Open Access
1,960 Views
16 Pages

Bayesian Approach to Stochastic Estimation of Population Survival Curves in Chile Using ABC Techniques and Its Impact over Social Structures

  • Rolando Rubilar-Torrealba,
  • Karime Chahuán-Jiménez,
  • Hanns de la Fuente-Mella and
  • Claudio Elórtegui-Gómez

In Chile and worldwide, life expectancy has consistently increased over the past six decades. Thus, the purpose of this study was to identify, measure, and estimate the population mortality ratios in Chile, mortality estimates are used to calculate l...

  • Article
  • Open Access
4 Citations
2,845 Views
25 Pages

Identification and Dynamics Understanding of Novel Inhibitors of Peptidase Domain of Collagenase G from Clostridium histolyticum

  • Farah Anjum,
  • Ali Hazazi,
  • Fouzeyyah Ali Alsaeedi,
  • Maha Bakhuraysah,
  • Alaa Shafie,
  • Norah Ali Alshehri,
  • Nahed Hawsawi,
  • Amal Adnan Ashour,
  • Hamsa Jameel Banjer and
  • Maryam Ishrat Niaz
  • + 1 author

Clostridium histolyticum is a Gram-positive anaerobic bacterium belonging to the Clostridium genus. It produces collagenase, an enzyme involved in breaking down collagen which is a key component of connective tissues. However, antimicrobial resistanc...

  • Article
  • Open Access
4 Citations
2,337 Views
9 Pages

Ultrashort Echo Time and Fast Field Echo Imaging for Spine Bone Imaging with Application in Spondylolysis Evaluation

  • Diana Vucevic,
  • Vadim Malis,
  • Yuichi Yamashita,
  • Anya Mesa,
  • Tomosuke Yamaguchi,
  • Suraj Achar,
  • Mitsue Miyazaki and
  • Won C. Bae

Isthmic spondylolysis is characterized by a stress injury to the pars interarticularis bones of the lumbar spines and is often missed by conventional magnetic resonance imaging (MRI), necessitating a computed tomography (CT) for accurate diagnosis. W...

  • Article
  • Open Access
2,093 Views
29 Pages

Horizontally curved steel I-beams exhibit a complicated mechanical response as they experience a combination of bending, shear, and torsion, which varies based on the geometry of the beam at hand. The behaviour of these beams is therefore quite diffi...

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Computation - ISSN 2079-3197