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1128 articles for “Modelling”
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Inverse ABCD Parameter Determination Using Spice
Abstract: Spice/Pspice Models using the inverse transmission parameters for linear two port analysis are given. The inverse transmission parameter determination for a circuit using SPICE2/Pspice is carried out. While the first procedure and files are for the calculation of Inverse ABCD parameters where the circuit is purely resistive and dependent sources, the second is for general two port network using linear elements and small signal models of active devices like BJT, …
Published in International Journal of Analog Integrated Circuits · Vol. 3, Issue 1, 2017 · pp. 14–19 Read article
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Combine Effect of Dry and Decomposed Raffia Palm in the Bioremediation of Oil-based Drill Cutting
Abstract: This study determines the effect of dry substrate and decomposed raffia palm for degradation of oil- based drill cuttings bioremediation. The remediation process was effectuated using dry and decomposed raffia palm. The experiment was carried out at the research Centre located at Agricultural and Environmental Engineering departmental workshop in Rivers State University, Port Harcourt. Samples of oil-based drill cuttings were bulked in eleven reactors with four replications (T1, T2, T3-T11). …
Published in International Journal of Composite Materials and Matrices · Vol. 9, Issue 1, 2023 · pp. 21–29 Read article
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An Optimized Design of the Standard Manual Wheelchair
Abstract: The manual wheelchair is commonly found in hospitals, rehabilitation centers, senior housing and airports for allowing patients, people with physical disabilities or for elderly people. Transferring mishaps are one of the major causes for injuries. Moreover, all the transferring actions between wheelchair and other surfaces are difficult for wheelchair users. This project is aimed at optimizing the existing design of a standard manual wheelchair by introducing a height adjusting mechanism …
Published in International Journal of Mechanics and Design · Vol. 5, Issue 2, 2019 · pp. 1–10 Read article
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Minimal Reduction of Fuel Consumption and Pollution with the Performing a New Design of Flat Engines by Simulation
Abstract: The automotive engine is one of the most important performance of the automotive today and has the task of transmitting power to the gearbox. That is why the world’s largest automotive companies are trying to produce engines that have the maximum power and the lowest fuel consumption. In this article, a motor design with a different appearance was presented. If we want to attribute the design of this engine to …
Published in International Journal of Mechanics and Design · Vol. 7, Issue 1, 2021 · pp. 17–21 Read article
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Generative Design and Simulation for Castor Wheel Assembly
Abstract: A castor wheel CAD model can be used to optimise the wheel's design for avariety of elements, including load capacity, durability, and use. Given theemployment of evolutionary algorithms and search strategies in thiscomputational process, generative design, also known as evolutionary design,is not a new idea. It can be characterised as a prototype design system thatcreates fresh conceptual designs from scratch using a genetic algorithm. In thismethod, a prototype system generates …
Published in International Journal of Mechanics and Design · Vol. 8, Issue 2, 2022 · pp. 15–24 Read article
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Design and Analysis of 3D Printer Using FDM Method
Abstract: Fused deposition modelling (FDM) is an additive manufacturing technique for layer-by-layer printing of three-dimensional objects. The research's major goal is to create and assess a low-cost 3D printer that can print items within a 200×200×200 mm printing area utilizing easily available materials and manufacturing methods. Phase of additive manufacturing Because of its advantages over traditional methods, 3D printing is becoming more common. A 3D printer is a computer that produces …
Published in International Journal of Computer Aided Manufacturing · Vol. 7, Issue 2, 2021 · pp. 17–22 Read article
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INVESTIGATE THE BULGING EFFECT OF METALLIC SOLID CYLINDER UNDER COLD UPSETTING USING FINITE ELEMENT ANALYSIS
Abstract: Friction is an integral part of metalworking and manufacturing processes due to the relative motion and forces continually acting on tools, dies, and workpieces. Friction both raises the effort and consumes energy. However, measuring friction is not straightforward and cannot be considered an independent parameter. In many metal-forming procedures, the impact of friction is just as crucial as other quantifiable factors. Various methods have been used to estimate friction, assuming …
Published in International Journal of Computer Aided Manufacturing · Vol. 8, Issue 2, 2022 · pp. 7–18 Read article
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Turbocharging of Spark Ignited Wankel engine for High Altitude Application Using 1-D Simulation Approach
Abstract: Wankel engines are increasingly finding their application in unmanned aerial vehicles, especially where high power-to-weight ratio is of utmost importance. This advantage makes the Wankel engines outperform the reciprocating engines despite several shortfalls. 1-D simulation model of the Wankel engine has been constructed from commercially available software for reciprocating piston engines. This model was then used to study the matching of turbocharger for the required application and the effect of …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 1, Issue 1, 2015 · pp. 36–47 Read article
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Modified Design Improvement Study and Optimization of a intake Manifold to Obtain Unequal Distribution of Velocity for Optimal Diesel Engine Performance
Abstract: Geometrical design of intake manifold has been found very significant for the better performance of an I.C. Engine. It becomes less effective at the intake manifold's runner's outlets due to an uneven flow distribution of the intake air. With an increase in velocity at the distribution channels, the presented study seeks to make this uneven velocity distribution nearly equal without requiring any additional significant changes to the entrance manifold's construction. …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 9, Issue 1, 2023 · pp. 13–23 Read article
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An Optimized Design of the Standard Manual Wheelchair
Abstract: The manual wheel chair is commonly found in hospitals, rehabilitation centres, senior housing and airports for allowing patients, people with physical disabilities or for elderly people. Transferring mishaps are one of the major causes for injuries. Moreover, all the transferring actions between wheelchair and other surfaces are difficult for wheelchair users. This project is aimed at optimizing the existing design of a standard manual wheelchair by introducing a height adjusting …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 6, Issue 2, 2020 · pp. 1–9 Read article
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Integrating Cellular Automata for Predicting Urban Expansion: A Case Study of Bavdhan, Sus, and Mahalunge
Abstract: Rapid Urban Expansion in the metropolitan cities like Pune, result in indiscriminate land use changes transforming natural landscapes. Such haphazard spatial development poses a risk to depletions of resources along with the disarray of the ecological system. A proactive approach to predicting and analyzing such changes is necessary in promoting the well-managed growth of cities. For the complex nature of urban growth, simulation method is used for analyzing spatial patterns, …
Published in International Journal of Town Planning and Management · Vol. 12, Issue 1, 2026 · pp. 51–62 Read article
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Crude Oil Degradation on the Influence of Palm oil-Fermented Wastewater Used as Biostimulant
Abstract: *Author for CorrespondenceUkpaka Chukwuemeka Peter E-mail: [email protected] The total petroleum hydrocarbon (TPH) degradation was monitored in a batch reactor with the addition of biostimulants like palm oil processed wastewater (POPWW) acting as nutrients, to effectively enhance high efficiency in contaminants remediation in clay soil. The kinetic components were evaluated in terms of specific rates of petroleum hydrocarbon degradation, maximum specific rate of total petroleum hydrocarbon degradation as well as the …
Published in International Journal of Chemical Separation Technology · Vol. 12, Issue 1, 2026 · pp. 47–60 Read article
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Mechanistic Insights into Solvent-Controlled Stepwise and Concerted Cycloadditions of the Propadienyl Cation with Oxoamides: A DFT Study
Abstract: AbstractOxazoles constitute an important class of heterocycles with widespread applications in medicinal chemistry and materials science, yet the mechanistic features governing their formation via cationic cycloaddition reactions remain incompletely understood. In this work, we present a comprehensive density functional theory (DFT) investigation into the reaction between the propadienyl cation and oxoamides as a model system for oxazole ring formation. Using the CAM-B3LYP/6–31+G(d,p) level of theory, we systematically compare gas-phase reactivity …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 12, Issue 1, 2026 · pp. 8–17 Read article
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Design and Finite Element Analysis of Go-Kart Tubular Chassis using Ansys
Abstract: Abstract:- The design of a go-kart chassis involves vehicle’s performance, safety, and handling characteristics. The present work focuses on the conceptual design, modelling, and structural analysis of a Go-Kart chassis aimed at achieving an optimal balance between strength, weight, and driver comfort using FEA software Ansys. A detailed chassis model was developed based on ergonomic considerations and racing standards. The design was evaluated through FEM approach to assess stress distribution, …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 12, Issue 1, 2026 · pp. 1–7 Read article
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Bot Defender: A Collaborative Defense Framework for Botnet Intrusion Mitigation
Abstract: Botnet attacks represent a significant threat to cybersecurity, compromising vast numbers of devices and causing extensive harm. BOT DEFENDER is a novel collaborative defense framework designed to mitigate botnet intrusions effectively. This framework leverages the power of collective intelligence, integrating data from multiple sources to detect and respond to botnet threats in real-time. By utilizing advanced machine learning algorithms, BOT DEFENDER can identify anomalous network behavior indicative of botnet activities, …
Published in International Journal of Broadband Cellular Communication · Vol. 11, Issue 2, 2026 · pp. 6–11 Read article
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Evaluation of Michaelis-Menten Constants of TPH Degradation on Clay Soil
Abstract: The degradation of Total Petroleum Hydrocarbons (TPH) in petroleum-contaminated clay soil remains a major environmental concern, particularly in regions with limited remediation options. This study investigates the enzymatic kinetics of TPH biodegradation using Michaelis-Menten modeling in the presence of Bryophyllum pinnatum leaf extracts as biostimulants. Fourteen bioreactors containing 2000g of contaminated clay soil were prepared with 100ml of crude oil and treated with varying doses (100ml, 200ml, and 300ml) of …
Published in International Journal of Chemical Engineering and Processing · Vol. 11, Issue 2, 2025 · pp. 6–12 Read article
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Finite Element Analysis (FEA) for Nonlinear Behavior in Advanced Materials
Abstract: (FEA) in investigating the nonlinear behavior of advanced materials plays a pivotal role in optimizing the design and performance of modern structural systems. As innovative materials, such as nanocomposites, metamaterials, and shape-memory alloys gain prominence, conventional linear modeling methods become inadequate for accurately capturing the intricate and time-dependent responses exhibited by these materials under diverse loading conditions. This research delves into cutting-edge FEA techniques to simulate and analyze the nonlinear …
Published in International Journal of Structural Engineering and Analysis · Vol. 11, Issue 1, 2025 · pp. 21–26 Read article
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AI-Driven Hybrid Neural Network Architecture for Medical Image Segmentation: A Novel Approach for Early Disease Detection
Abstract: One of the key factors in detecting early diseases is medical image segmentation. Medical image segmentation can be very complex due to the differences in image quality, noise, and specific anatomical structures of individual patients. A novel approach for a hybrid neural network structure that combines the power of convolutional neural networks, and the transformer-based models is described here for improved accuracy and robustness of medical image segmentation. Unlike traditional …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 1, 2025 · pp. 1–7 Read article
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Reimagining Urban Living: An Architect’s Approach to Smart Residential Colonies
Abstract: This paper will explore the concept of a new residential colony model that responds to the significant social, technological, and environmental transformations currently shaping urban environments. As urbanization accelerates and the global population continues to rise, there is an urgent need for housing solutions that address both the challenges of modern living and sustainability. The smart residential colony model will aim to create a harmonious balance between these needs, integrating …
Published in International Journal of Housing and Human Settlement Planning · Vol. 11, Issue 1, 2025 · pp. 37–57 Read article
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Cell Culture Technologies in Animal Biotechnology: Innovations and Applications
Abstract: Cell culture technologies have become integral to animal biotechnology, enabling the in vitro study of cellular behaviors, disease mechanisms, and the development of therapeutic solutions. These technologies are foundational for advancements in drug discovery, gene therapy, regenerative medicine, and vaccine production. Over recent decades, innovations in culture media, bioreactor systems, and three-dimensional (3D) cell culture models have significantly enhanced the efficiency and reproducibility of cell-based research. Serum-free and chemically defined …
Published in International Journal of Animal Biotechnology and Applications · Vol. 10, Issue 2, 2024 · pp. 25–29 Read article