Search
412 articles for “reliability”
-
4 X 4 Multi-band MIMO Antenna: A Study
Abstract: The insatiable demand for higher data rates and improved connectivity in modern wireless communication systems critically relies on Multiple Input Multiple Output (MIMO) technology. However, the effective realization of MIMO's benefits, particularly in compact devices, is fundamentally constrained by the physical limitations of antenna design, primarily mutual coupling between radiating elements and high spatial correlation. This paper presents the design, analysis, and optimization of a novel 4x4 multi-band MIMO antenna …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 19–29 Read article
-
Right Hand Circularly Polarized Ku-Band Patch Antenna withImproved Axial Ratio Bandwidth for Small Satellite Application
Abstract: This study presents the design and fabrication of a Ku-band patch antenna that achieves right-hand circular polarization (RHCP) with an enhanced axial ratio (AR) bandwidth. The proposed antenna consists of two circular split ring resonators(SRRs) and a T-shaped feedline. To achieve circular polarization, circular split ring resonators were placed symmetrically at both ends of the T-shaped feedline. The proposed antenna has been carefully designed and simulated using the CST Microwave …
Published in International Journal of Microwave Engineering and Technology · Vol. 11, Issue 2, 2025 · pp. 56–63 Read article
-
Hybrid Signal Processing Framework for Seamless Integration of Analog and Digital Communication Systems in 6G Networks
Abstract: The next 6G phase of evolution of the communication system is expected to deliver data speedexceeding terabits per second, very low latency, and connectivity everywhere among heterogeneous devices. These performance goals can only be met through signal processing architecture paradigm shift. The paper will describe a Hybrid Signal Processing Framework (HSPF) which combines the analog and digital communication methods to leverage the complementary benefits of the two spheres. The framework …
Published in International Journal of Digital Communication and Analog Signals · Vol. 11, Issue 2, 2025 · pp. 28–42 Read article
-
Microgrid Sources and Power Electronic Interfaces: A ComprehensiveReview on Source Characteristics, Converter Design, Protection, Power Quality, and Energy Storage Integration
Abstract: Microgrids have become a prospective technology in improving energy reliability, sustainability, and resilience through a combination of a variety of distributed energy sources, sophisticated power electronic interface, and energy storage systems. In this paper, there is an in-depth discussion of the source of microgrids, its fundamental features, and how it works and the criteria that may be used in selecting the source of microgrids depending on the factors involved and …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 11, Issue 2, 2025 · pp. 30–61 Read article
-
Robust Power Supply Design and Parameter Monitoring of Electrostatic Precipitator
Abstract: This paper focuses on the development of a high-performance power supply system tailored for electrostatic precipitators (ESPs) to improve their efficiency in industrial applications. The proposed system converts alternating current (AC) to direct current (DC) using an AC to DC converter, followed by a boost converter to elevate the output voltage to the levels required for effective ESP operation. The boost converter ensures the output voltage remains stable, compensating for …
Published in International Journal of Power Electronics Controllers and Converters · Vol. 11, Issue 2, 2025 · pp. 62–68 Read article
-
Self-healing Polymer Nanocomposites study using filler effect
Abstract: Polymers, while versatile, often lack the desired mechanical strength, thermal stability, or barrierproperties for high-performance applications. This limitation is elegantly addressed bycreating polymer nanocomposites. These materials are formed by incorporating small amounts(typically 1-5 wt%) of nanoscale fillers (e.g., carbon nanotubes, graphene, silica, clay, metaloxide nanoparticles) into a polymer matrix. The magic of nanocomposites lies in the incrediblyhigh surface area-to-volume ratio of the nanoparticles and their unique interactions with thepolymer chains. …
Published in International Journal of Polymer Science and Engineering Read article
-
The New Era of Fusion and Solid-State Joining: A Review of Latest Welding Techniques and Applications
Abstract: Abstract This review examines the quickly changing field of solid-state joining and welding technologies, emphasizing new developments, practical uses, and future research avenues. Strategies that lower heat input, enhance joint integrity, and allow the connecting of sophisticated and dissimilar materials have gained importance within the last ten years. Solid-state techniques are particularly appealing for lightweight alloys used in the automotive and aerospace industries because they reduce melt-related defects and the …
Published in International Journal of Manufacturing and Materials Processing · Vol. 11, Issue 2, 2025 · pp. 35–40 Read article
-
Innovative Financing Models for Scaling RenewableEnergy Projects in Africa: A Case Study onCrowdfunding and Blended Finance
Abstract: Africa’s energy industry stands at a pivotal moment, possessing plentiful renewable resources yet lacking adequate financing solutions to realize their potential. More than 600 million Africans still lack electricity access and conventional financing approaches, like government subsidies, donor funding, and bank loans, frequently fall short or are unreachable because of high risks, low investor trust, and poor regulatory conditions. Thus, innovative funding models are crucial to close the gap between …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 11, Issue 2, 2025 · pp. 50–54 Read article
-
Processing–Structure–Property Relationships in Advanced Manufacturing of Functional Materials
Abstract: AbstractMechanical processing is very important in modern production since it changes raw materials into usable parts with exact sizes and qualities. This article looks at the basic methods of mechanical processing, such as cutting, shaping, grinding, milling, and joining. It also talks about how important these methods are for getting things done quickly, accurately, and with the least amount of material possible. Recent advancements, including computer numerical control (CNC) machining, …
Published in International Journal of Manufacturing and Materials Processing · Vol. 11, Issue 2, 2025 · pp. 25–34 Read article
-
CAE Analysis and Material Selection for Chassis of 4-Wheel Efficycle
Abstract: ABSTRACT This paper presents a comprehensive Computer-Aided Engineering (CAE) analysis and material selection study for the chassis of a four-wheel Efficycle — a hybrid human-electric powered vehicle designed for student competitions and sustainable mobility applications. The objective of the study is to evaluate the structural integrity, stiffness, and crashworthiness of the chassis under various loading scenarios including front impact, side impact, rollover, and torsional loads. Using CAD models developed in …
Published in International Journal of Computer Aided Manufacturing · Vol. 11, Issue 2, 2025 · pp. 9–18 Read article
-
EXIT Chart Analysis and PerformanceEvaluation of Cooperative NOMA Systems
Abstract: This paper conducts a comprehensive performance analysis of Cooperative Non-Orthogonal Multiple Access (NOMA) systems through the application of Extrinsic Information Transfer (EXIT) chart analysis, a tool widely used for visualizing the iterative decoding process in communication systems. The proposed system integrates Successive Interference Cancellation (SIC), Multi-User Detection (MUD), and spreading techniques to enhance the reliability and efficiency of data transmission. In this cooperative framework, the near user (NU), having stronger …
Published in International Journal of Broadband Cellular Communication · Vol. 11, Issue 2, 2026 · pp. 21–30 Read article
-
Hybrid Signal Processing Framework for Seamless Integration of Analog and Digital Communication Systems in 6G Networks
Abstract: The next 6G phase of evolution of the communication system is expected to deliver data speed exceeding terabits per second, very low latency, and connectivity everywhere among heterogeneous devices. These performance goals can only be met through signal processing architecture paradigm shift. The paper will describe a Hybrid Signal Processing Framework (HSPF) which combines the analog and digital communication methods to leverage the complementary benefits of the two spheres. The …
Published in International Journal of Digital Communication and Analog Signals · Vol. 11, Issue 2, 2025 Read article
-
Recent Changes in the Signal System
Abstract: Recent years have seen big improvements in signal systems, thanks to fast progress in communication technologies, artificial intelligence, and hardware capabilities. Signal systems are very important for modern technology. They are the basis for many different uses, including telecommunications, transportation, industrial automation, and medical diagnostics. Signal systems are all about making, sending, processing, and understanding signals, whether they are analogue or digital, so that information may be shared easily. As …
Published in International Journal of Digital Communication and Analog Signals · Vol. 11, Issue 2, 2025 · pp. 1–8 Read article
-
CAE Analysis and Material Selection for Chassis of 4-Wheel Efficycle
Abstract: ABSTRACT This paper presents a comprehensive Computer-Aided Engineering (CAE) analysis and material selection study for the chassis of a four-wheel Efficycle — a hybrid human-electric powered vehicle designed for student competitions and sustainable mobility applications. The objective of the study is to evaluate the structural integrity, stiffness, and crashworthiness of the chassis under various loading scenarios including front impact, side impact, rollover, and torsional loads. Using CAD models developed in …
Published in International Journal of Computer Aided Manufacturing · Vol. 11, Issue 2, 2025 · pp. 1–10 Read article
-
Design, Analysis, and Material Optimization of a Passenger Railway Bogie Manipulator for Enhanced Performance and Efficiency
Abstract: Abstract The study aims to improve the design and optimize the material used in passenger railway bogie manipulators to improve their performance and efficiency. It is an essential tool in railway maintenance for lifting and relocating heavy bogie assemblies. The primary goal was to reduce overall weight and material use while maintaining structural integrity and operational reliability. After verifying the system structure, the original 70 mm screw was reduced to …
Published in International Journal of Mechanics and Design · Vol. 11, Issue 2, 2025 · pp. 1–13 Read article
-
EROSION OF UNDERLYING SOIL
Abstract: Abstract : To protect underlying soil erosion on which foundation base is provided like apron provided in water retaining structure like dam, weir etc. In flood zone area this apron is provided at foundation base of building, near village which is situated near bank of river underlying soil erosion will be prevented when apron is provided. Near bank of river (village situated) for protection of village near bank of river …
Published in International Journal of Geological and Geotechnical Engineering · Vol. 11, Issue 2, 2025 · pp. 20–25 Read article
-
Clean Drinking Water: A Vital Necessity for Rural Development
Abstract: Access to clean drinking water is a cornerstone for public health, socio-economic development, and overall well-being. However, many rural communities worldwide continue to struggle with inadequate access to safe and reliable water sources, leading to significant public health challenges. Contaminated water sources in rural areas often stem from agricultural runoff, improper sanitation systems, and industrial waste, exposing populations to a wide range of waterborne diseases such as cholera, dysentery, and …
Published in International Journal of Water Resources Engineering · Vol. 11, Issue 2, 2025 · pp. 1–6 Read article
-
A Review of Real-Time Human Detection
Abstract: The real-time human detection and counting system leverages deep learning and computer vision to detect individuals, classify gender, and estimate age from live video feeds or CCTV footage. Implemented using flask as a lightweight web framework, the system manages user authentication, detection control, and real-time result display. A Python-based detection script operates asynchronously, ensuring smooth execution, while results – including counts of males, females, and total individuals – are stored …
Published in International Journal of Image Processing and Pattern Recognition · Vol. 11, Issue 2, 2025 · pp. 29–39 Read article
-
Experimental Study on Charging Conditions of a Single Component DDT Detonator Using Nickel Hydrazine Nitrate
Abstract: As a salt of a coordination compound of nickel, nickel hydrazine nitrate (NHN) is an energetic substance with characteristics halfway between those of primary and secondary explosives. It is less sensitive to friction and mechanical impact than other primary explosives, although it is highly sensitive to flames. NHN is not very dangerous to handle, but it explodes readily when exposed to flame. This property makes it possible to fabricate safety …
Published in International Journal of Energetic Materials · Vol. 11, Issue 2, 2025 · pp. 1–12 Read article
-
Redefining Land Ownership: A Blockchain-Powered Framework for Transparent and Decentralized Land Record Governance
Abstract: Conventional land record management systems have long suffered from issues, such as inefficiency, data manipulation, corruption, and lack of transparency, which collectively hinder effective governance and erode public trust. This paper introduces a blockchain-based framework aimed at revolutionizing land record management by ensuring enhanced transparency, data security, and operational efficiency. The proposed system leverages the decentralized and immutable nature of blockchain technology to eliminate the need for intermediaries, thereby minimizing …
Published in International Journal of Software Computing and Testing · Vol. 11, Issue 2, 2025 · pp. 27–39 Read article