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785 articles for “Operational research”
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Strategies for Eradicating Water Supply Problems and Pollution Issues in Challenging Economy of Nigeria
Abstract: There are sporadic pollution issues and water supply-related problems in the Nigerian environment which calls for the urgent attention of civil engineers. This study examines strategies for eradicating water supply problems and pollution issues in the challenging economy of Nigeria. The methodology for this research work includes a site survey, case studies, visitation to some polluted sites and a literature survey. Critical strategies that are sustainable and achievable toward solving …
Published in Journal of Water Resource Engineering and Management · Vol. 9, Issue 3, 2022 · pp. 21–28 Read article
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The Critical Role of Cyber Threat Intelligence in Countering Terrorism: Challenges, Successes and Policy Recommendations
Abstract: Cyber threats from terrorist organizations pose severe risks to national security, economic stability and public safety. Cyber threat intelligence (CTI) has emerged as a crucial capability for pre-empting and disrupting cyberterrorism attempts through systematic monitoring of threat actors, along with analytical frameworks to contextualize tradecraft. This paper provides an extensive overview of CTI, analyzing the state of the art of intelligence gathering frameworks against threat groups by assessing technologies like …
Published in Journal Of Network security · Vol. 11, Issue 3, 2023 · pp. 22–29 Read article
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Smart-Waste-Management-System
Abstract: The rapid urbanization and increasing waste generation pose significant challenges to traditional waste management systems, necessitating innovative solutions that integrate economic principles and management strategies. In order to enhance trash transportation and recycling procedures, this paper investigates the deployment of a Smart trash Management System that makes use of Internet of Things (IoT) components and machine learning algorithms. By applying economic principles such as cost-benefit analysis and resource allocation, and …
Published in International Journal of Environmental Noise and Pollution Control · Vol. 3, Issue 2, 2025 · pp. 18–27 Read article
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Hydrodynamic and Sedimentation Modelling for Capacity Optimization of OR1, OR2, and Fertilizer Berths at Visakhapatnam Port, India
Abstract: This study presents comprehensive hydrodynamic and sediment transport modeling undertaken to assess the impact of proposed deepening and development at the Western Arm of the Visakhapatnam Inner Harbor, India, encompassing OR1, OR2, and Fertilizer berths. The work, carried out by the Central Water and Power Research Station (CWPRS) for the Visakhapatnam Port, utilized the MIKE 21 Flexible Mesh (FM) finite-volume model to simulate hydrodynamic and siltation conditions under existing and …
Published in Journal of Water Resource Engineering and Management · Vol. 13, Issue 1, 2026 · pp. 33–51 Read article
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Performance Measures in Lean Production Settings: A Case Study
Abstract: The purpose of this paper is to outline how the performance measurement system of a large manufacturing unit has evolved since the implementation of a lean-based production system. In order to fulfill the purpose, this paper has been divided into four sections. The first section outlines the theoretical background and underlines the developments made in the fields of PMM and operations management over the last decades. The second part presents …
Published in Journal of Production Research & Management · Vol. 2, Issue 1-2-3, 2012 · pp. 8–17 Read article
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Outcome of Circumferential Penile Skin versus Dorsal on Lay Buccal Mucosal Urethroplasty for Long Anterior Urethral Strictures: A Prospective Single Centre Experience with Five Years Follow-up
Abstract: Buccal mucosa has become the most popular substitute in the management of urethral strictures. Prior to it, penile skin was the preferred tissue for transfer. In order to see which one is better, we study the outcome of penile versus buccal mucosa for long anterior urethral strictures. A total of 76 patients with long anterior urethral strictures of more than 5 cm were randomly divided into two groups in the …
Published in Research and Reviews : Journal of Surgery · Vol. 5, Issue 1, 2016 · pp. 18–23 Read article
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Idempotent Semiring Path Algebras and Fuzzy Dominance Automata for Multi-State Communication Reliability
Abstract: A semiring-based theory is proposed for multi-state communication reliability with fuzzy dominance constraints. Links are weighted in the max-product semiring, while nodes carry dominance coefficients and operating states that modulate admissible transitions in a weighted automaton. The paper derives semiring matrix products, Kleene closures, fixed point equations, congestion-regularized path scores, and reliability inequalities. A fuzzy dominance automaton is introduced so that route selection depends not only on link reliability but …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 13, Issue 2, 2026 · pp. 07–14 Read article
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The ballistics device- Potato Cannon
Abstract: Spud guns, also known as potato cannons, represent a fascinating intersection of ingenuity, physics, and recreational engineering. This paper delves into the dynamics, construction, and potential applications of spud guns. These devices typically consist of a combustion chamber, a barrel, and a triggering mechanism. The propulsion system involves igniting a gaseous mixture, often generated from aerosol propellants or other combustible materials, which propels a projectile—usually a potato or similar object—out …
Published in Recent Trends in Fluid Mechanics · Vol. 10, Issue 3, 2023 · pp. 36–41 Read article
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The Role of Smart Grids in Enhancing Energy Efficiency and Sustainability
Abstract: The rapid adoption of smart grid technologies is reshaping the energy sector, prompting significant changes in the traditional utility business model. This survey paper provides a comprehensive analysis of the impact of smart grids on utility revenue streams, focusing on the transition from conventional electricity sales to new, service-oriented business models. By examining key innovations such as energy-as-a-service, virtual power plants, and peer-to-peer energy trading, this study highlights how utilities …
Published in International Journal of Advanced Control and System Engineering · Vol. 2, Issue 2, 2024 · pp. 10–18 Read article
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Human-robot Collaboration in Manufacturing: Safety, Efficiency, and Technological Developments
Abstract: Human-robot collaboration (HRC) has emerged as a transformative force in modern manufacturing, significantly enhancing productivity, operational flexibility, and overall efficiency. This review article explores the fundamental aspects of HRC, with a particular focus on safety protocols, efficiency optimization, and technological advancements that are shaping the future of collaborative robotics. Ensuring safety in HRC environments is a primary concern, necessitating the implementation of advanced safety measures, risk assessment methodologies, and compliance …
Published in International Journal of Advanced Robotics and Automation Technology · Vol. 3, Issue 1, 2025 · pp. 18–23 Read article
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Blockchain-Assisted Electronic Voting: A System Design Perspective
Abstract: Voting plays a vital role in upholding democratic principles by allowing individuals to express their preferences and take part in shaping the decisions that affect their lives. Despite its importance, traditional voting systems—whether manual or digital—continue to encounter major obstacles. These include a lack of transparency, declining voter turnout, vulnerability to fraud, and concerns around manipulation. While digital voting platforms offer a modern alternative, they often face skepticism due to …
Published in Journal of Electronic Design Technology · Vol. 16, Issue 2, 2025 · pp. 9–16 Read article
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Underbalanced Drilling and Its Advancements: An Overview
Abstract: Ever increasing global energy demand associated with depletion of conventional hydrocarbon resources drives exploration and production (E&P) industry to invent advanced new technologies in frontier areas of drilling, production and reservoir engineering to enhance hydrocarbon production from unconventional resources or depleted reservoirs. Demand to produce from a low pressure marginal reservoir and the discoveries of naturally fractured reservoirs lead to the development of new drilling techniques like underbalanced drilling along …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 2, 2014 · pp. 37–51 Read article
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A Review on Predicting Wear and Friction of PTFE Composites - Fillers to Machine Learning Models
Abstract: Polytetrafluoroethylene (PTFE) composites, a self-lubricating material with low friction, became an indispensable material in engineering applications where load carrying capacity and wear are crucial. The pure PTFE has poor mechanical strength and wear resistance which can be enhanced by the addition of fillers in appropriate volume fraction. The wear performance is dependent on various factors such as fillers, operating parameters, environmental conditions as well as manufacturing attributes. This makes the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 114–128 Read article
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Comparative Environmental and Economic Assessment of Wind Turbine Blade Materials
Abstract: Wind energy has proven to be one of the most stable and non-polluting renewable energy sources to mass power production. For energy production wind turbine is an essential part of the wind power plant. The choice of the blade material and coating applied on it has a strong impact on aerodynamic performance, mechanical strength, fatigue life, manufacturing possibility, and environmental effects throughout the operating life of the turbine. Hence, authors …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 91–99 Read article
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IoT-Enabled Sustainable Development: Architectures, Applications, Challenges, and Future Directions
Abstract: The Internet of Things (IoT) has developed into a powerful technology that can help tackle key global sustainability issues by enabling real-time monitoring, supporting data-based decisions, and facilitating smart automation. By interconnecting physical devices, sensors, and communication networks, IoT enables continuous data collection and analysis that supports efficient resource utilization across multiple sectors such as energy, agriculture, water management, transportation, and urban infrastructure. Through smart sensing and automated control systems, …
Published in Journal of Mobile Computing, Communications & Mobile Networks · Vol. 13, Issue 2, 2026 Read article
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The Feasibility of Bilateral Tympanoplasty in Single Sitting in Bilateral Chronic Otitis Media
Abstract: Bilateral tympanoplasty is not a routinely performed surgery by otosurgeons. The reason being is the risk of inducing sensorineural deafness and fear of bilateral ear packing post operatively that may render patient’s total deaf. The aim of the study is to assess the feasibility of bilateral tympanoplasty in single sitting in bilateral chronic otitis media. 50 patients with bilateral inactive mucosal type COM underwent bilateral tympanoplasty in same sitting. The …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 4, Issue 3, 2015 · pp. 22–27 Read article
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Optimizing Anesthesia for Major Surgery: The Role of Sequential Combined Spinal-Epidural Technique
Abstract: The Combined Spinal Epidural (CSE) approach has been widely employed over the last decade because it achieves rapid onset and substantial blockage while also allowing for the modification or prolongation of the block. Background: Sequential spinal-epidural anesthesia (SSEA) combines the rapid onset and dense blockade of spinal anesthesia with the prolonged duration and adjustable analgesia of epidural anesthesia. This technique is particularly beneficial in major surgeries requiring prolonged operative time …
Published in Research and Reviews : Journal of Surgery · Vol. 14, Issue 2, 2025 · pp. 12–18 Read article
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The Role of Simulation and Digital Twins in Enhancing Mechanical Production Efficiency: A Systematic Review
Abstract: In the evolving landscape of smart manufacturing, simulation technologies and digital twin (DT) systems have emerged as pivotal tools for enhancing the efficiency, agility, and sustainability of mechanical production processes. This systematic review investigates how the integration of simulations and DTs contributes to performance improvements across various stages of mechanical manufacturing—ranging from design and process optimization to predictive maintenance and real-time monitoring. While simulations provide the ability to model, test, …
Published in Journal of Production Research & Management · Vol. 15, Issue 2, 2025 · pp. 31–36 Read article
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A Study and Performance Evaluation of Evolutionary Optimization Techniques for Multi-objective Master Production Scheduling Problems
Abstract: Master production schedule (MPS) can effectively and efficiently synchronize the operations in any organization. MPS, which is posed as one of the multi-objective parameter optimization problems, is a plan that determines optimal values of products to be produced. For many engineering optimization problems, more competitive and optimal solutions can be obtained by using Heuristic evolutionary optimization algorithms. Among these, two main algorithms considered here are the differential evolution (DE) whose …
Published in Journal of Production Research & Management · Vol. 3, Issue 2, 2013 · pp. 12–22 Read article
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Vertical Axis Wind Turbine Modeling and its Analysis Using ANSYS
Abstract: Research on small wind turbine (SWT) is on the upswing in the last five years, as there is a need of energy producing machines to compensate with the fossil fuel based energy. The green technology wishes to create environment friendly energy producing devices based on wind or solar technology. In this paper, an attempt is made to make use of already existing waste wind energy produced by high speed moving …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 1, 2017 · pp. 26–32 Read article