Science topic
MATLAB - Science topic
MATLAB (matrix laboratory) is a numerical computing environment and fourth-generation programming language. Developed by MathWorks, MATLAB allows matrix manipulations, plotting of functions and data, implementation of algorithms, creation of user interfaces, and interfacing with programs written in other languages, including C, C++, Java, and Fortran.
Publications related to MATLAB (10,000)
Sorted by most recent
In this paper, we study the graph theoretical polynomial known as the Hosoya polynomial obtained from one of the standard classes of graphs called path. Using this polynomial applied for the numerical solution of the nonlinear Fredholm integral equation, which reduces in the algebraic system of equation with collocation points, then solving this sy...
The paper addresses task assignment and trajectory generation for collaborative inspection missions using a fleet of multi-rotors,
focusing on the wind turbine inspection scenario. The proposed solution enables safe and feasible trajectories while accommodating heterogeneous time-bound constraints and vehicle physical limits. An optimization proble...
The integration of distributed generation (DG) and short circuit analysis affects the radial distribution power system in terms of voltage profile, line loss and short circuit levels. This paper investigates the impact of DG placement and sizing with security analysis in the IEEE 33-bus distribution system. Modified Whale Optimization Algorithm (MW...
The fluctuating frequency in a power grid is the major stability challenge due to the unpredictable power demand of customers during the time. To address this issue, an automatic generation controller (AGC) is employed. The AGC based on a proportional integral derivative (PID) approach is popularly utilised owing to its soft implementation and low...
This paper presents a novel approach to utilizing underactuated quadrotor Unmanned Aerial Vehicles (UAVs) as assistive devices in cooperative payload transportation task through human guidance and physical interaction. The proposed system consists of two underactuated UAVs rigidly connected to the transported payload. This task involves the collabo...
Modern electric power systems (EPSs) experience an increase in the number of distributed generation plants. These plants can be located far from the center of consumption, which "narrows" the areas of static aperiodic stability, determining the possibility of the existence of the operating mode of the electric power system. Since there can be varia...
Algorithms based on linear approximation are the primary methods for fast online image reconstruction in electrical capacitance tomography (ECT). One-step reconstruction algorithms use certain inverse matrix approximations , such as the normalized transpose matrix or the Moore-Penrose pseudoinverse matrix used in the linear back-projection (LBP) al...
Coastal tourism is a significant economic activity in Lekki and Epe mangroves in Nigeria. However, the presence of heavy metal pollutants in these areas due to uncontrolled industrialization and ecotourism-related pollution poses a potential risk to ecosystems. This paper examined the complex interplay between uncontrolled industrialization, ecotou...
This study presents a checkerboard data analysis approach using a Hill function (y = 1/(1+(x/K) ⁿ ) to fit each column and row of checkerboard assay data. Column fits give a K (MIC) value in units of row concentration for each column antibiotic concentration (MIC_row vs [Col]), and row fits give an MIC_col value for each row antibiotic (MIC_row vs...
The present manuscript investigates the thermoelastic interactions in a double porous transversely isotropic fiber-reinforced material with rotation and variable thermal conductivity, when a thermal load is applied on the surface of the half-space. The governing equations are formulated in the light of Green–Lindsay theory of generalized thermoelas...
Computer viruses have caused great harm and nasty effects on people's lives. Therefore, analyzing and establishing the corresponding mathematical model can help explore and study the propagation law of computer viruses. On this basis, we apply the theory of computer virus propagation dynamics by combining computer viruses and the variability of the...
Objective
This study sought to analyze the correlational relationships between mastoid air cells, the area of the facial recess entrance, and the location of the vertical segment of the facial nerve.
Methods
CT scans of 60 ears from 30 patients were analysed. We used MIMICS to obtain inner ear coordinates in CT images. Mastoid air cells were analy...
As reinforced materials, wheat straw and bamboo have many advantages of natural, green and environmental protection. For the problem about the stability of three-dimensional slope reinforced by wheat straw and bamboo natural reinforced fiber materials, the direct shear experiments were done to study the changes in shear strength of the two kinds of...
The article presents and discusses the results of the research of forecasting power demands in Polish Power System with time horizon of one hour ahead in conditions of limited availability of forecasting model input data, covering only three months. The prediction was carried out using deep neural networks - LSTM (Long Short-Term Memory) connected...
Surface gravity waves incident on a coastal region can be classified into three main groups depending on their period: (1) sea waves, generated by local weather, with periods between 2 and 8 s; (2) swell waves, generated by distant storms, with periods between 8 and 25s; and, (3) infra-gravity waves, with periods between 30 and 300 s. Infragravity...
Commercial bribery, as one of the means of unfair competition for enterprises, could be a potential risk leading to greenwashing. This paper focuses on the governance of corporate greenwashing and constructs an evolutionary game model between enterprise, media, government and consumer from the perspective of commercial bribery to analyze the mechan...
In order to coordinate the transverse motion control and longitudinal motion control in the tracking control process and ensure the yaw stability and roll stability in the tracking process, a transverse and longitudinal coordinated control method of three-axis heavy vehicles is designed based on model predictive control. The lateral motion controll...
Gas turbines are widely used in power generation due to their efficiency, flexibility, and low environmental impact. Modeling, especially in thermodynamics, is crucial for the designer and operator of a gas turbine. An advanced and rigorous thermodynamic model is essential to accurately predict the performance of a gas turbine under on-design opera...
To accurately estimate the cooling or heating load of a building, it is necessary to calculate the heat gained through the walls under specific climatic conditions. Many effective techniques for performing this task have been developed in the engineering literature, highlighting the importance of selecting sustainable building materials. In this st...
In the globe, there is a rise in water demand for agricultural, industrial, and domestic purposes. Single-basin solar stills (SBSS) have been a subject of research in various countries, particularly in regions with water scarcity or limited access to clean drinking water. In this work, SBSS for desalinating high-salinity water were developed, teste...
In this study, the optimum design for an induction motor (IM) was realized by providing details of its geometric design. The IM optimization was carried out using the Artificial Ecosystem-based Optimization (AEO) algorithm, a metaheuristic method. The AEO algorithm was used for the first time in IM optimization, and the design parameters were optim...
This research aims to find an economical, non-invasive solution for grading apples by sweetness based on multispectral imaging. This paper examines the relationship between sugar levels and multispectral images of apple fruit taken inside a wooden multispectral imaging enclosure specially designed for taking apple pictures. In addition, using a han...
This research focuses on modeling the spread of Hand, Foot, and Mouth Disease (HFMD) among children below the age of 15 using the Atangana-Baleanu Caputo (ABC) fractional derivative. The model incorporates both environmental contamination and vaccination effects to better capture the transmission dynamics of HFMD. The fractional derivative accounts...
There is a trade-off between pile safety and cost, and a balance between the two factors is crucial. An important aspect of pile safety that is often overlooked is design robustness, which requires that the structural response is not sensitive to the variation of statistics of noise factors. This study proposes a framework for cone/piezocone penetr...
The Finite Element Method (FEM) is a powerful computational tool for solving partial differential equations (PDEs). Although commercial and open-source FEM software packages are widely available, an independent implementation of FEM provides significant educational value, provides a deeper understanding of the method, and enables the development of...
This paper proposes a robust DC-link voltage controller designed for a multilevel-based static synchronous compensator (STATCOM), addressing both DC-link capacitance degradation and load variations. The uncertainty in DC-link capacitance is modeled as an external perturbation, leading to the development of a second-order sliding mode controller (SO...
Vertex domination is a key concept in graph theory, essential for analyzing the structural properties of graphs. This study explores the use of vertex domination to determine the domination numbers for Two specific graph structures: boundary graphs and boundary Neighbor graphs. A graph's dominance number is the minimal collection of vertex in which...
The direct emission of methane-rich associated gas from oil fields is a significant contributor to the greenhouse effect. Currently, alternative gas flooding predominantly employs CO2 and N2 as displacement phases, with limited research focusing on the alternating injection of methane-rich associated gas and CO2 tailored for oil field production. T...
The development of multi-cloud systems with an acceptable level of service delays that significantly affect the quality of the end-users experience is an open research problem, for which simulation is successfully used. This paper proposes a simulation model in Matlab for estimating the time to write data updates initiated by the end-users to the d...
In practical applications of droplet actuation using digital microfluidic (DMF) systems based on electrowetting-on-dielectric (EWOD), various electrode failures can still arise due to diverse operational conditions. To improve droplet transport efficiency, this study proposes a heuristic-elite genetic algorithm (HEGA) for droplet path planning. We...
The increasing global population, along with concerns about fossil fuel depletion and environmental pollution, has necessitated the development of alternative modes of transportation. The strategic allocation of charging stations for electric vehicles is essential for maximizing their benefits. A significant portion of power system losses can be at...
This article presents the experimental validation of a model-based predictive control (MPC) strategy for the safe interconnection of voltage source inverters (VSI) with output LC filters for the grid connection of DC energy resources. The MPC is formulated as a quadratic programming (QP) problem and solved using the operator splitting quadratic pro...
In this study, we develop a photonics-based Bessel launcher characterized by a hollow-core cylindrical waveguide surrounded by Bragg gratings composed of concentric silicon rings, each 375 nm thick. The metasurface is constructed on a 5 µm high silicon cylindrical substrate. This configuration effectively generates a Bessel beam at the commonly use...
The current work was developed under the title of Artificial Neural Network (ANN) Proportional Integral Derivative (PID) for the arm rehabilitation device and included building and designing the simulation model and simulation results for the arm rehabilitation device. A set of tests were proposed to include firstly testing a system that represents...
This paper deals with the dynamic behaviors of a discrete-time fractional-order predator–prey model in the presence of both the Allee effect and immigration on the prey population and in the presence of harvesting on the predator population. The existence and uniqueness and parametric conditions for local asymptotic stability of fixed points of the...
Groundwater exploration is crucial for sustaining ecosystems and human activities, particularly in semi-arid regions like the highlands of Eritrea. This study evaluates the effectiveness of manual and automated lineament extraction methods for identifying geological structures indicative of groundwater potential. Using a 30-meter resolution SRTM di...
The paper focuses on development and validation of communication system for underwater acoustic with comparison to the existing designs. the prime objective is to select the suitable methods to analyze the performance of the channel targeted for the application. using simulation platform, evaluate the various noise model and deploy the suitable one...
This paper focuses on a defective one-dimensional photonic crystal thermal sensor with fabricated layers of gallium nitride, glycerin, and air. The transmission features of this sensor have been presented based on the transfer matrix approach using MATLAB software. Interest in the sensor’s sensitivity to temperature variation is for the sake of the...
Electric vehicles (EVs) are increasingly recognized as a solution to transportation-related air pollution, yet their widespread adoption is limited by restricted driving range per charge. This manuscript proposes a novel hybrid technique to optimize energy use and extend EV range by integrating Sea-Horse Optimization (SHO) with Hamiltonian Deep Neu...
The study is dedicated to the statistical optimization of radar imaging of surfaces with the synthetic aperture radar (SAR) technique, assuming a static surface area and applying the ability to move a sensor along a nonlinear trajectory via developing a new method and validating its operability for remote sensing and non-destructive testing. The de...
In this paper, problem of secure message (signal and image) transmission is studied. The message is encrypted by masking it with a chaotic system state and then transmitted to receiver-side via a communication channel. It is assumed that the communication channel may be prone to a cyber-attack. The transmission system dynamics in presence of the cy...
In recent years, modularity has become increasingly present in the field of robotics and mechatronics. The need to easily calculate and generate modular robots in an easier and faster way and for a wide range of robotics projects has increased. This paper aims to present a new modular software development method for an automatic configurator of ser...
Future Department of Defense needs include rapid implementation and testing of signal processing algorithms on forward deployed unmanned autonomous hardware systems. Various signal processing algorithms can be designed to test the feasibility of using MATLAB with the hardware description language (HDL) Coder toolbox for rapid implementation and the...
Much recent research has focused on dielectric fluids in engineering applications because of their physical properties. In this study, the use of HFE‐7100 as a working fluid in a porous pipe exposed to thermal conditions like solar radiation conditions in Baghdad city was studied. The two‐phase mixture model with Local Thermal Non‐Equilibrium assum...
Purpose:
This study aims to investigate the effects of layering sequence, aspect ratios, fiber orientation angles, loading types and boundary conditions on the buckling behavior of glass/carbon/hybrid fiber-reinforced epoxy laminated composites using the differential quadrature (DQ) approach.
Design/methodology/approach:
In total, different hybrid...
In this work, we describe details of using a single board computer 'SBC' Raspberry Pi as a standard desktop computer in higher education at Badji Mokhtra Annaba University Faculty of technology. The Raspberry Pi is a powerful SBC in a size of a credit card. It was created by the Raspberry Pi Foundation charity, whose primary goal was the re-introdu...
Waveform generation as part of on-chip built-in self-test (BIST) circuitry often necessitates sufficient linearity without expensive hardware overhead. Achieving high linearity is critical for accurate signal generation, especially in applications requiring high precision, such as biomedical and instrumentation applications. Currently, achieving th...
This work presents a machine learning (ML) approach to volume-tracking for computational simulations of multiphase flow. It is an alternative to a commonly used procedure in the volume-of-fluid (VOF) method for volume tracking, in which the phase interfaces are reconstructed for flux calculation followed by volume advection. Bypassing the computati...
The construction industry is the main driving sector for any country's economy. However, it is too risky due to the many risks and challenges in this industry. One of the main challenges in construction projects is variation orders, as they lead to conflicts between project parties and cause poor project performance. This study aims to evaluate the...
Malware software has become a pervasive threat in computer and mobile technology attacks. Attackers use this software to obtain information about users of the digital world to obtain benefits by hijacking their data. Antivirus software has been developed to prevent the propagation of malware, but this problem is not yet under control. To develop th...
An enhanced control scheme of a double-powered asynchronous generator (DPAG) integrated into a variable-speed contra-rotating wind turbine (VSCRWT) generation system is displayed in this paper. The original idea treated here is to develop a robust direct power control (DPC) using a new kind of proportional-integral (PI) regulator based on feedback...
The problem of early crack formation caused by temperature stresses in hardening concrete is very relevant for massive monolithic reinforced concrete structures. The aim of the work is to develop a method for thermal cracking risk prediction during the construction of massive monolithic reinforced concrete structures. The innovation of the research...
Fins are typically tiny extended surfaces found on the external region of devices and equipment. Their primary purpose is to enhance the rate of heat transfer to or out of a device or an object by adjusting convective heat transfer coefficient. They are available in different shapes and configurations depending on the required applications: there a...
This study presents a novel approach to enhance the precision of calculating sag and magnetic fields beneath overhead transmission lines. The Biot-Savart law is integrated with parabolic equations to assign multiple magnetic field sources to each conductor, resulting in improved prediction accuracy. Addressing oversimplifications in traditional mod...
Given the importance of promoting a greener and more sustainable future, it is crucial to promptly tackle and improve the issues surrounding carbon emissions and inefficiency linked to traditional energy sources. This study presents a new optimization method for PV systems. It combines an IGWO Algorithm with PID-type SMC to enhance the effectivenes...
The grounding system in substations generally uses electrode rods, because electrodes can affect the effectiveness of fault current conduction, so the equipment will be safer. Considering the importance of the grounding system, the installed grounding system must be considered and maintained properly. One of them is the grounding found in Glugur. T...
span>Electric vehicles are the trend of this decade. Frequent high-power requirements of electric vehicles, make the batteries discharge at higher C rate. Discharging at a higher C rate will lead to higher heat production leading to destruction and explosion of the battery. To optimize the charging and discharging C rates considering both safety an...
The rise of intelligent and connected vehicles has led to new vehicular applications, but vehicle computing capabilities remain limited. Mobile edge computing (MEC) can mitigate this by offloading computation tasks to the network's edge. However, limited computational capacities in vehicles lead to increased latency and energy consumption. To addre...
The Tesla coil was invented by Nikola Tesla in the late nineteenth century and produces electrical discharges in the form of high-voltage arcs, unlike the musical Tesla coil, which focuses on the generation of musical sounds through controlled electrical discharges. To create an audio reproduction device by using a physical phenomenon, it is necess...
In this paper, a Clique collocation method is presented to numerically solve the third-order multisingular (MS) functional differential equation. This method convert this equation to a system of the algebraic equations via the collocation points and the matrix relations. Also, the error estimation technique is constituted for the third-order multis...
The high penetration and uncertainty of renewable energy sources, such as wind, in modern power systems make traditional automatic generation control (AGC) methods more challenging. In order to improve the frequency stability of the power system under the high proportion of wind power penetration, the inherent fast-response characteristics of energ...
Utilizing the similarity transformational variable, the governing equations representing the boundary layer flow of a sodium oxide nano fluid over the laminated stretching sheet was transformed into coupled nonlinear differential equations. The nonlinear terms were then decomposed with applications of the Modified Adomian Decomposition Method. Nume...
The investigation into the cooling and heating duration is crucial for evaluating the aftermath of a fire incident. This study comprehensively analyzes the macroscopic and microscopic characteristics of red sandstone under high temperatures, heating, and cooling conditions, with temperatures ranging from 200 to 800 °C and heating/cooling durations...
This paper deals with dynamical analysis of a food-web including three logistically growing interaction species, prey, intermediate predators and apex predators. The intermediate predator species predate the prey species according to the Holling type-II functional response, while the apex predator species predate both prey species and intermediate...
Certain rod-shaped bacteria may move over surfaces without the assistance of external appendages like flagella, cilia, or pili thanks to a process known as gliding motility. In this work, the dynamics of an undulating sheet are used to represent the methods by which these bacteria migrate over a Williamson slime layer on a rigid substrate. The bact...