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1362 articles for “performance testing”
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Effect of Blunt Truncation in an Aerospike Nozzle
Abstract: Aerospike nozzles are gaining attention as a more advanced alternative to conventional bell nozzles, mainly because they can perform efficiently across a wide range of altitude conditions. Unlike traditional converging–diverging nozzles, aerospike designs naturally adjust to changes in ambient pressure, allowing the exhaust flow to expand more effectively. This results in better thrust performance under varying operating conditions, making them a strong candidate for future aerospace propulsion systems. In this …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 2, 2026 Read article
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The Impact of Sleep Quality on Academic Performance and Burnout Among College Students
Abstract: In today’s academic environment, college students face a multitude of challenges that disrupt their well-being—one of the most overlooked being sleep quality. While balancing coursework, social obligations, and personal goals, sleep often becomes a casualty of the student lifestyle. Many students often sacrifice sleep without fully realizing how it affects their mental sharpness and emotional well-being. This study delves into the complex connection between how well students sleep, how they …
Published in International Journal of Behavioral Sciences · Vol. 2, Issue 2, 2025 · pp. 59–65 Read article
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Developing an AI-Based Novel Forecasting Framework for Surface Irregularity in Metal Matrix Materials
Abstract: Surface irregularity in metal matrix materials (MMM) signifies the deviations from smoothness, influencing structural integrity and performance frequently arising from the manufacturing process along with intrinsic material characteristics that influence effectiveness. Limitations in data, model interpretability and complexity are the difficulties that impede artificial intelligence (AI) based surface irregularity in MMM. In this study, we suggested a novel framework of Gaussian regression fused multi-strategy adaptive boosting classifier (GR-MABC) for the …
Published in Journal of Polymer & Composites · Vol. 12, Issue 5, 2024 · pp. 48–56 Read article
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Improve the Performance of Proxy Caching Using LRU, AVL Tree and BST
Abstract: Proxy caching is increase the performance to access the web pages. Multiple computer in a network uses multiple cache for better performance. Caching of Multi-level normally works through testing the minimum load cache. Uncertainty you miss a lower level cache than the search for next level cache. This paper will study L1 cache such as the primary cache and L2 cache such as the secondary form of cache of the …
Published in Journal of Web Engineering & Technology · Vol. 7, Issue 1, 2020 · pp. 13–20 Read article
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Mud Acid Effect on Fines Migration Problem Using a Newly Developed Al/Zr-Based Clay Stabilizer (A): Mitigation Can Happen
Abstract: Sandstone reservoirs exhibit severe fines migration problems subsequent to conventional mud acid (HCl: HF) treatments. The acid treatment proved to be effective for a relatively short period of time, with a sudden production decline owing to either that mud acid spent rapidly in close proximity to the wellbore, causing clays to migrate into the acidized area and re-plug the formation; or that the mud acid system actually weakens the structure …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 3, 2015 · pp. 11–29 Read article
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Color and Texture Features Based Object Recognition Using Machine Learning Methods
Abstract: Object recognition in images is a simple task for human but it is a complex and challenging task for machines due to different factors such as occlusion, lightening, object size, scaling etc. A Robust and automatic image processing system is thus critically required to make such a sampling approach practical. In this paper, we propose a method for classification of objects in images by incorporating global descriptors of the image …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 5, Issue 2, 2018 · pp. 1–11 Read article
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Polymer Matrix-Based High-Performance Thermoplastic Composites for Automotive Applications: Design, Characterization, and Interface Behavior
Abstract: The study emphasizes the role of high-performance thermoplastic polymer matrices such as PEEK, PPS, and PA6, selected for their superior thermal stability, mechanical strength, and recyclability in automotive environments. The expanded usage of electric vehicles (EVs) and self-driving transportation creates a demand for advanced materials which are weight-conscious yet high in strength relative to their weight, impact-resistant yet still being environmentally friendly. This study aims to create and define fiber-reinforced …
Published in Journal of Polymer & Composites · Vol. 13, Issue 5, 2025 · pp. 216–237 Read article
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Linux Operating System Performance Evaluation and States
Abstract: Linux has made great growth recently, and as a result of its many useful features for businesses and home users, it has grown to be one of the maximum broadly used working structures with inside the IT industry. Three Linux desktop distributions were chosen for further assessment based on their popularity among available Linux distributions. The goal of this article is to assess and analyse the performance of three different …
Published in Journal of Advances in Shell Programming · Vol. 8, Issue 2, 2021 · pp. 1–9 Read article
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Evaluation on the Mechanical Strength of TIG Welded 6061Aluminium Alloy Joints
Abstract: Aluminum alloy Al-6061 is extensively used in aerospace, automotive, and marine industries due to its excellent mechanical properties, lightweight nature, and corrosion resistance. However, welding this alloy presents challenges such as porosity, hot cracking, and strength reduction in the heat-affected zone (HAZ). Tungsten Inert Gas (TIG) welding, known for its precision and quality, is commonly employed for joining Al-6061. This study investigates the tensile strength of TIG-welded butt joints of …
Published in Trends in Machine design · Vol. 13, Issue 1, 2026 · pp. 34–39 Read article
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Predictive Analytics and Adaptive Learning: A Machine Learning Framework for Reducing Learning Gaps
Abstract: Most contemporary digital learning environments encounter persistent challenges when it comes to accurately identifying students who are at-risk of academic underperformance. These challenges often arise due to limited visibility in learners’ engagement levels and gaps in conceptual understanding, particularly during the early stages of a course. To address this issue, the present study proposes an early prediction framework that leverages comprehensive student-related data through the application of machine learning techniques. …
Published in International Journal of Algorithms Design and Analysis Review · Vol. 4, Issue 1, 2026 · pp. 16–21 Read article
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The Impact of Nutrition on Sports Performance and Academic Success: A Study Among University Athletes – Eastern Technical University of Sierra Leone
Abstract: University athletes operate within dual-performance environments that require simultaneous academic and athletic excellence. Nutrition plays a critical role in supporting both physiological performance and cognitive functioning; however, limited empirical work has examined its combined influence on athletic and academic outcomes within university athlete populations, particularly in low-resource contexts. This study aimed to investigate the relationship between nutritional practices, sports performance, and academic achievement among university athletes at the Eastern Technical …
Published in Research & Reviews : Journal of Food Science & Technology · Vol. 15, Issue 1, 2026 · pp. 16–27 Read article
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An Experimental Study on the Fabrication and Mechanical Properties of Natural Fiber Reinforced Polymer Hybrid Composites
Abstract: Natural fiber-reinforced polymer composites are increasingly investigated as lower-impact alternatives to conventional synthetic fiber systems. This work fabricated and mechanically characterized a sisal-coconut coir fiber-reinforced epoxy hybrid composite and compared its performance with a glass fiber-reinforced polymer (GFRP) epoxy composite under the reported laboratory conditions. The hybrid reinforcement contained 75% sisal fiber and 25% coconut coir fiber and was incorporated into an epoxy LY556/HY951 matrix by the hand lay-up technique. …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 Read article
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Cooling test's impact on photovoltaic solar panel systems
Abstract: Temperature changes have a massive effect on the performance of photovoltaic (PV) solar panels that are currently extensively used for the conversion of solar power into electrical energy. The output of solar systems is limited, especially in hot climates, as heating of the panel causes output voltage and efficiency to drop. The paper explores the effects of cooling on the quality and performance of photovoltaic (PV) solar panels. In this …
Published in International Journal of Electronics Automation · Vol. 4, Issue 2, 2026 Read article
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Development of a Cost-Effective Automatic Power Transfer Switch for Backup Energy Systems
Abstract: This study offers a practical solution to the frequent power outages in places like Nigeria, where having backup power sources, such as inverters, is crucial. To make switching between the main power supply and backup power easier, the authors created a simple but effective transfer switch. The design uses important components like an electromechanical relay, a contactor, a voltage monitoring relay, and delay timer relays to ensure smooth switching between …
Published in Journal of Electronic Design Technology · Vol. 16, Issue 1, 2025 · pp. 7–12 Read article
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Microstructural Evolution and Mechanical Performance of Ambient-Cured Fly Ash–Metakaolin Inorganic Polymer Composites Activated by Anhydrous Sodium Silicate Powder
Abstract: Inorganic geopolymer networks offer a low-carbon and sustainable solution to traditional binder systems through the alkali-activation of industrials-grade aluminosilicate material. The present paper focuses on the microstructure development and the mechanical performance of the ambient-cured fly ash – metakaolin inorganic polymer composite activated with solid anhydrous sodium silicate powder. Five inorganic polymer binder combinations were formulated by replacing fly ash with metakaolin at mass fractions of 0%, 10%, 20%, 30%, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Estimation of Rock Participation Factor through Hydro Tests of Pressure Shafts: A Case Study
Abstract: Pressure shafts for conveying water from fore-bay reservoir to power generating units are designed by taking advantage of surrounding rock mass in sharing internal design pressure. The ratio of internal pressure shared by surrounding rock mass to design pressure is known as rock participation factor (RPF). It is a very important parameter in economizing the cost of pressure shafts through saving of high strength steel. However, to ascertain share of …
Published in Journal of Water Resource Engineering and Management · Vol. 2, Issue 2, 2015 · pp. 6–12 Read article
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Enhancing Mechanical and Thermal Properties of Glass Fiber-Reinforced Epoxy Composites with Silicon Carbide Additives
Abstract: This study explores the production and characterization of glass fiber-reinforced epoxy resin composites enhanced with silicon carbide (SiC) as a reinforcing filler. The primary objective is to evaluate the impact of SiC on the mechanical, thermal, and morphological properties of the composites. Four different samples with varying SiC weight fractions (0%, 5%, 10%, and 15%) were prepared, keeping the glass fiber content constant. The composites were fabricated using a combination …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 69–77 Read article
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Recall Abilities in Children with Learning Disability as a Function of Modality of Stimulus Presentation
Abstract: Recallrefers to the subsequent re-accessing of events or information from the past, which have been previously encoded and stored in the brain. Recall can be tested practically by exposing the participants to the stimulus and asking them to recall the stimulus either in the same of presentation or in any order. The process of recall is sensitive to many variables. The modality of stimulus presentation is a major variable affecting …
Published in Research and Reviews : A Journal of Medical Science and Technology · Vol. 8, Issue 1, 2019 · pp. 13–17 Read article
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Optimizing Performance Characteristics, Thermal Stability, and Manufacturing Performance of Polymer Nanocomposites Using Artificial Intelligence
Abstract: Artificial intelligence (AI) has proven an efficient method to optimize the design and manufacture of polymer nanocomposites, allowing the proper prediction of the behavior of the materials and the results of the processing. This work proposes an AI-based framework to enhance the performance characteristics, thermal stability and manufacturing performance of advanced polymer nanocomposites. The input variables of the proposed framework are the material composition, the nanoparticle concentration, the particle size, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Synthesis of Glass Fiber Reinforced Polymer Composites Incorporating MWCNTS and Graphene: A Study on Dynamic Mechanical Behavior and Cole–Cole Representation
Abstract: Glass fiber reinforced polymer (GFRP) composites were fabricated using multi-walled carbon nanotubes (MWCNTs) and graphene as nanofillers through the hand lay-up technique. Two sets of composites were prepared by incorporating MWCNTs and graphene separately into the epoxy resin matrix at varying weight percentages (2%, 4%, 6%, 8%, and 10%). Mechanical and viscoelastic properties were evaluated following ASTM standards, and Dynamic Mechanical Analysis (DMA) was performed to study their mechanical and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 1411–1403 Read article