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Highly sensitive miniaturized labyrinth shape circular split ring resonator (LC-SRR) based microwave sensor for low permittivity characterization applications Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-09 Abu Hanif, Mohammad Lutful Hakim, Touhidul Alam, Badariah Bais, Saeed Alamri, Ayed M. Alrashdi, Mohamed S. Soliman, Mohammad Tariqul Islam
This article proposed a labyrinth shape circular split ring resonator (LC-SRR) based microwave sensor for material permittivity characterization at L to S-band applications. The proposed sensor achieved miniaturized dimensions of only 25 × 20 mm by utilizing fractal technology. This new design strategy adopts a unique and compact structure and high electromagnetic (EM) field intensity, contributing
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Integration analysis model of oil-charging system about parallel hydraulic retarder and its response characteristic Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-09 Maohan Xue, Yao Fu, Xiaohu Geng, Shaohua Sun, Yulong Lei
As a auxiliary braking device in vehicle’s downhill process, parallel hydraulic retarder has strict requirements for its rapidity of response performance and accuracy of braking torque. The parallel hydraulic retarder uses high-pressure gas as the control medium, which pushes the oil into the working chamber through the high-speed on/off valve. Because the oil filling process of the chamber is an indirect
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Artificial neural network training using a multi selection artificial algae algorithm Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-09 Murat Karakoyun
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Novel electric arc current emulation system for low-voltage grids Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-09 Asier Davila, Alberto Otero, Estefania Planas, Jose Antonio Cortajarena, Antoni Arias
An electric arc is a common distribution grid error, even more so with the use of electric vehicles and renewable energy sources that increase the likelihood of grid errors. Several control systems and strategies are under development to minimize electric-arc faults and to guarantee reliable grid performance. All the control strategies must be validated through emulations of the different fault modes
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Aligning security and energy-efficiency using change detection and partial encryption for wireless camera networks Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-08 Osama A. Khashan
Wireless camera networks (WCNs) have seen widespread deployment in recent years, leading to an upsurge in monitoring and surveillance systems aimed at detecting foreign objects and changes within remote environments. However, wireless communication remains susceptible to cybersecurity threats, enabling eavesdroppers to access and manipulate confidential multimedia data effortlessly. Moreover, wireless
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Efficiency analysis of solar farms by UAV-based thermal monitoring Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-07 Semih Sami Akay, Orkan Özcan, Okan Özcan, Ömer Yetemen
Solar energy is a rapidly growing industry, and the performance analysis and maintenance of solar farms are crucial for ensuring their photovoltaics efficiency and longevity. In this context, many solar farms are established and it is crucial for energy producers to operate these farms efficiently. However, control of solar degradation panels locally takes time and control procedures are a challenge
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SOMNet: Self-Optimizing mobility management for resilient 5G heterogeneous networks Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-06 Abdulraqeb Alhammadi, Zool Hilmi Ismail, Ibraheem Shayea, Zaid Ahmed Shamsan, Majid Alsagabi, Sulaiman Al-Sowayan, Sawsan Ali Saad, Mohammad Alnakhli
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Fabric surface defect classification and systematic analysis using a cuckoo search optimized deep residual network Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-04 Hiren Mewada, Ivan Miguel Pires, Pinalkumar Engineer, Amit V. Patel
Fabric defects can significantly impact the quality of a textile product. By analyzing the types and frequencies of defects, manufacturers can identify process inefficiencies, equipment malfunctions, or operator errors. Although deep learning networks are accurate in classification applications, some defects may be subtle and difficult to detect, while others may have complex patterns or occlusions
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Experimental and numerical study of erosive wear of t-pipes in multiphase flow Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-04-03 Rehan Khan, Michał Wieczorowski, Asiful H. Seikh, Ibrahim A. Alnaser
Erosive wear is inexorable in chemical and hydrocarbon transportation systems. In this study, the worn surface morphologies and erosive wear mechanisms were discussed to analyze the primary mechanism of erosion in Tee (T) pipe configurations for two-phase (liquid-sand) and three-phase (gas–liquid-sand) flow conditions. The surface roughness analysis demonstrates that the erosion in three-phase plug
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MHD nanofluid flow between porous convergent-divergent channel with velocity slip and nanoparticle aggregation Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-30 Mohamed Kezzar, Abuzar Ghaffari, Amar Dib, Usman, Mohamed Rafik Sari, Taseer Muhammad
The aggregation of nanoparticles is a major phenomenon having broad consequences in many fields. In order to fully utilize the capabilities of nanoparticles in a variety of applications and to evaluate the effects that they will have on the environment and biological systems, it is crucial to comprehend and manage aggregation. To develop and improve nanoparticle-based technology, researchers are still
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Fast traffic processing in multi-tenant 5G environments: A comparative performance evaluation of P4 and eBPF technologies Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-30 Jorge Gallego-Madrid, Alejandro Molina-Zarca, Ramon Sanchez-Iborra, Jordi Ortiz, Antonio F. Skarmeta
Although the softwarization of network infrastructures through the use of Software Defined Networking (SDN) and Network Function Virtualization (NFV) has set the foundations of future communication architectures, the efficient handling of high throughput traffic while maintaining latency requirements still remains a challenge. In this work, we explore two arising technologies that aim at reducing networking
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Power line Communication: Revolutionizing data transfer over electrical distribution networks Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-28 Seda Ustun Ercan
Power Line Communication (PLC) is an emerging technology that utilizes existing electrical power infrastructure for data transmission. It enables communication over power lines, allowing devices to exchange information and access the internet through the power grid. This method offers numerous advantages, including widespread availability, cost-effectiveness, and easy deployment without the need for
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Instantaneous contact area-based model for shear strength sensitive cutting coefficients characterization of anisotropic parts Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-25 José David Pérez-Ruiz, Luis Norberto López de Lacalle, Gorka Urbikain, Hugo Álvarez, Jovanny Pacheco
The anisotropic nature of laser powder bed fusion (LPBF) parts means that the cutting force coefficients obtained by linear regression or non-linear optimization methods only work for one tool position relative to the workpiece. These methods must obtain a new set of coefficients for each tool position relative to the workpiece, which becomes cumbersome for surface machining with multiple tool-to-workpiece
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Multibeam-based mmWave segmented beamforming array system for high efficiency and secure communication Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-23 Seung-Won Oh, Woo-Hee Lim, Han Lim Lee
A new mmWave transmitter architecture with multibeam-based segmented beamforming arrays (SBAs) for high-efficiency and secure communication is proposed. Unlike convetional communication architecture, which transmits a high-order QAM signal through a single RF-chain, the proposed structure transmits independently controlled multiple QPSK signals to form M-QAM signals. The multiple independent SBA chains
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Experimental optimization of displacer working gap in a gamma-type Stirling engine Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-21 Turgay Ergin
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Rigorous design and experimental validation of non-reciprocal bandpass filter with ultrawide high reverse isolation bandwidth Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-20 Girdhari Chaudhary, Yongchae Jeong
This work presents a rigorous design and experimental validation of a non-reciprocal bandpass filter (NBPF) employing time-modulated resonators with progressive phase shift sinusoidal modulation signal to achieve low forward transmission insertion loss (IL) and ultrawide high reverse isolation bandwidth. Analytical design equations have been derived for numerical design of NBPF asl well as providing
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Innovative agricultural ontology construction using NLP methodologies and graph neural network Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-19 Krithikha Sanju Saravanan, Velammal Bhagavathiappan
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Mechanism of resistance to deformation for damaged mechanical elastic wheel: Rubber damage research based on peridynamic Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-15 Chenxi Zhang, Youqun Zhao, Fen Lin, Danyang Li, Shuo Guo
As a type of non-pneumatic wheel, mechanical elastic wheel (MEW) can is resistant to deformation and continue to be used when rubber is damaged by the bullet. In order to prove the deformation resistance ability of MEW, the model of rubber damaged by bullet based on the non-ordinary state-based peridynamic is proposed for the first time. By considering the two conditions with bullet penetrating and
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The detection of unaccounted natural gas consumption: A neural networks and subscriber-based solution Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-15 Kürşad Arslan, Mustafa Akpınar, M. Fatih Adak
Energy is a paramount expense for nations, emphasizing the significance of energy access and conservation. This study proposes using neural networks and statistical methods to identify unaccounted natural gas consumption. Companies gauge gas usage through real-time calculations with A-type remote measurement stations (RMS-A) and monthly reflected bills. Unaccounted consumption, resulting in economic
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Data-oriented QMOOD model for quality assessment of multi-client software applications Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-10 Yusuf Özçevik
There has been a great effort to evaluate software quality using proper tools and methods against different development environments changing over time. Quality Model for Object Oriented Design (QMOOD) is a verified model used for quality assessment of object-oriented software. The model associates quality metrics gathered from the source code and quality attributes in use to present a quality measurement
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Adaptive FEM-BPNN model for predicting underground cable temperature considering varied soil composition Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-08 Abdullah Ahmed Al-Dulaimi, Muhammet Tahir Guneser, Alaa Ali Hameed, Fausto Pedro García Márquez, Osama E. Gouda
In underground cables of power systems, the maximum temperature of the cable is a crucial factor in determining its capacity. According to standards, the permissible operating temperature for the XLPE cable conductor under steady-state conditions is 90 °C – a limit that should not be exceeded. Exceeding this temperature may lead to a thermal breakdown in the cable insulation, thereby resulting in interruption
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Ballistic performances of Ramor 500, Armox Advance and Hardox 450 steels under monolithic, double-layered, and perforated conditions Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-03-01 Doğan Acar, Bahadır Hakan Canpolat, Ömer Necati Cora
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Research of the FLC + PID switching control strategy based on real-time error for the pneumatic polishing force regulating system Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-28 Jinlong Dong, Jiashun Shi, Zhelun Ma, Tianbiao Yu
This paper designs an active pneumatic polishing force control system and investigates its control strategy. A straightforward method based on the experiments is proposed for identifying and modeling the pneumatic system and a convenient and effective control strategy based on real-time error is proposed for pneumatic polishing force regulating. Corresponding function between the input duty cycles
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Multi-objective scheduling and optimization for smart energy systems with energy hubs and microgrids Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-24 Yanliang Wang, Bo Wang, Hashem Farjam
This paper introduces a novel model for optimizing microgrid systems by integrating multi-purpose renewable energy (MEM) and cutting-edge technologies, including electric vehicles (EVs). The proposed MEM demand response programs encompass various energy sources such as wind energy, multi-carrier energy storage technologies, boilers, combined heat and cooling units, EVs, P2G (power-to-gas), and demand
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The effects of limonene and eugenol additives in n-heptane and low-octane gasoline on the emission characteristics and fuel consumption of single-cylinder gasoline engine Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-23 Musyaroh, Widya Wijayanti, Mega Nur Sasongko, Winarto
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A two-step optimization for crankshaft counterweights Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-23 Eugenio Brusa, Alberto Dagna, Cristiana Delprete, Chiara Gastaldi
The optimization of industrial products and processes has been, since the beginning of the third industrial revolution, a fundamental aspect of the design phase as it allows, together with the testing and validation phases, the improvement of the performance or efficiency of what has been designed. Optimization is also applied to the counterweights of the crankshafts that ensure the balancing of the
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Analysis of the influence of forming tool geometry on clinching joint for cylindrical surfaces Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-22 Mateusz Franka, Nikodem Wróbel, Michał Rejek, Grzegorz M. Królczyk, Munish Kumar Gupta, Jolanta B. Królczyk
Clinching is a technique for joining metal sheets without the use of welds or screws. This method of joining uses only the energy of the joining process and no consumables to achieve local deformation of metal pieces. It is also a straightforward method for attaching metal sheets with thicknesses between about 0.5 and 3mm, and the maximum joint thickness is about 6mm. Clinching is often reserved for
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Differential evolution–based integrated model for predicting concrete slumps Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-22 Yansheng Liu, Ruyan Li, Qian Liu, Zhen Tian, Yuwei Yuan, Yufei Hou
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Designing an optimal microgrid control system using deep reinforcement learning: A systematic review Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-20 Noer Fadzri Perdana Dinata, Makbul Anwari Muhammad Ramli, Muhammad Irfan Jambak, Muhammad Abu Bakar Sidik, Mohammed M. Alqahtani
Microgrid systems play a pivotal role in the integration of renewable energy sources and enhancing electrical grid resilience. Deep Reinforcement Learning (DRL), a subset of artificial intelligence, holds the potential to revolutionize the control and management of microgrids. This systematic review aims to provide a comprehensive assessment of the current state of research on designing microgrid control
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Comparative study of single-phase multilevel cascaded transformerless inverters with different modulation methods Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-19 Hakki Mollahasanoglu, Merve Mollahasanoglu, Emre Ozkop
This paper presents an in-depth exploration of a single-phase multilevel cascaded H5 (CH5) transformerless inverter employing both phase-shifted PWM (PS-PWM) and level-shifted PWM (LS-PWM) methodologies. A comparative analysis is conducted with the conventional multilevel inverter (MLI) topologies, specifically the cascaded H-bridge (CHB) and H5 inverter configurations. The investigation delves into
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FlashPage: A read cache for low-latency SSDs in web proxy servers Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-19 Junhee Ryu, Dong Kun Noh, Kyungtae Kang
The paper introduces FlashPage, a high-speed SSD caching system designed for ultra-fast media, with the goal of enhancing web page delivery in proxy servers. Traditional SSD caching schemes, designed primarily for slow HDD-based primary storage, encounter difficulties when applied to capacity-class SSDs as primary storage. This limits the high-performance capabilities of caching media. To address this
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IoT integrated adaptive fault tolerant control for induction motor based critical load applications Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-19 Dattatraya Kalel, R. Raja Singh
The concept of Industry 4.0 is flexible monitoring, uninterrupted services, cost-effectiveness, and things connected to networks. Industrial drives with various sensing and controlling units are the key components of every industrial process. In electric drive, the current sensor and speed encoder are used for controlling the system. A fault in the sensing unit could interrupt the process, which causes
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Effect of stress relaxation on the sealing performance of O-rings in deep-sea hydraulic systems: A numerical investigation Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-19 Jia-Bin Wu, Li Li, Pin-Jian Wang
A reliable O-ring seal is an important guarantee for the stable running of deep-sea hydraulic systems and for the execution and completion of subsea tasks. Stress relaxation of rubber materials under deep-sea low-temperature conditions has an impact on the O-ring sealing performance, especially when coping with a sudden and sharp increase in clearance height. In this paper, the physical stress relaxation
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Compact coradiator dual polarized MIMO antenna for future 5G, emerging 6G and IoT applications Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-15 Srividhya Krishnamurthy, Jothilakshmi Paramasivam
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Direct determination of instantaneous values of periodically switched circuits based on difference equations Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-13 Ali Bekir Yildiz
This paper explains how to use difference equations to directly obtain instantaneous/periodic values of periodically switched circuits at a desired time. Switched circuits, by their nature, have system equations of variable nature. Differential equations used in the analysis of continuous-time systems do not allow direct access to the instantaneous values of the switched circuits at any time or
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Formal performance analysis of optimal relays-based protection scheme for automated distribution networks Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-13 Sobia Ashraf, Osman Hasan
The dominance of dual-setting directional overcurrent relays (DS-DOCRs) based protection schemes and associated high-reliability requirements require rigorous verification of these schemes before deployment. Traditionally, numerical and simulation-based methods are used to analyze the performance of these schemes. However, they are incomplete and, thus, cannot provide complete and accurate analysis
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Cryptanalyzing a bit-level image encryption algorithm based on chaotic maps Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-12 Heping Wen, Yiting Lin, Zhaoyang Feng
Recently, a bit-level image encryption algorithm based on chaotic maps (BCIEA) has been presented. BCIEA consists of diffusion and confusion, and its security performance mainly relies on the dynamic mechanisms introduced during diffusion and confusion, respectively. However, after a careful cryptanalysis, we found that BCIEA has fatal security issues. Although the bit-level diffusion formally employs
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Front Matter 1 - Full Title Page (regular issues)/Special Issue Title page (special issues) Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-12
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A metasurface-inspired printed monopole antenna for 5G and RF energy harvesting application Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-10 Bikash Behera, Sanjeev Mishra, Mohammed H. Alsharif, Peerapong Uthansakul, Monthippa Uthansakul
In this paper, a wideband circularly polarized (CP) Y-shaped printed monopole antenna with the twin parasitic conducting strips (PCS) loaded with a circular-shaped metasurface (MS) layer is investigated. Initially, a linearly polarized (LP) Y-shaped monopole antenna is designed. Thereby, to attain a CP from LP, a metallic strip is used to short one of the parasitic conducting strips to the ground plane
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EMTL-Net: Boosting segmentation quality in histopathology images of gland and nuclei by explainable multitask learning network as an optimized strategy Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-09 Haider Ali, Mingzhao Wang, Juanying Xie
In spite of achieving human-level efficacy in gland and nuclei segmentation, modern deep learning-driven techniques still face challenges related to the loss of regional context information and disregard the importance of long-range semantic information during the optimization. Furthermore, one typical issue with CNN-based approaches is also their lack of clinical explainability. In such context, we
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Intelligent inspection probe for monitoring bark beetle activities using embedded IoT real-time object detection Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-09 Milan Novak, Petr Doležal, Ondřej Budík, Ladislav Ptáček, Jakub Geyer, Markéta Davídková, Miloš Prokýšek
Rapid detection and identification of the extent of spruce bark beetle infestation in the field is a necessity for researchers, forest rangers, and tree protection agencies. This paper presents an innovative solution that uses an autonomous multifunctional probe with embedded artificial intelligence. This approach is based on the real-time object detection method, called “first object, more object”
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Efficiency, optimality, and selection in a rigid actuation system with matching capabilities for an assistive robotic exoskeleton Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-08 Asim Ghaffar, Muhammad Zia Ur Rahman, Víctor Leiva, Carlos Martin-Barreiro, Imran Ali, Xavier Cabezas, Cecilia Castro
Selecting the right actuator for a portable exoskeleton involves a comprehensive evaluation of various design characteristics. In this study, we introduce a methodology for actuator selection based on specific tasks, enhancing the practical adoption of portable exoskeletons. By examining a range of candidate actuators designed for lower limb exoskeletons, our objective is to engineer a system that
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MFEUsLNet: Skin cancer detection and classification using integrated AI with multilevel feature extraction-based unsupervised learning Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-07 Vasuja Devi Midasala, B. Prabhakar, J. Krishna Chaitanya, Kalyanapu Sirnivas, D. Eshwar, Pala Mahesh Kumar
Skin Cancer is the most common form of the disease and is responsible for millions of deaths each year. Most of the relevant studies concentrate on algorithms that are based on machine learning, and few on deep learning as well. However, due to the several challenges in dermoscopic image acquisition, these algorithms are unable to deliver the highest possible level of accuracy and specificity. Therefore
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Development of rubber-sand composite for enhanced impact resistance: Implications of vulcanization Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-02-03 Saleemsab Doddamani, Satyabodh M. Kulkarni, Sharnappa Joladarashi, Ashish Kumar Gurjar, Mohan Kumar T.S.
Developing rubber-sand composites for enhanced impact resistance faced challenges in material selection, optimisation of vulcanisation, interfacial bonding, and understanding underlying mechanisms. This study provides insights into the effect of vulcanisation on the energy absorption of rubber-sand composites and the potential benefits of adding sand particles as reinforcement, sulfur as a vulcanising
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Energy-efficient task offloading in fog computing for 5G cellular network Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-29 Wan Norsyafizan W. Muhamad, Syamimi Syahirah Mohd Aris, Kaharudin Dimyati, Muhammad Awais Javed, Azlina Idris, Darmawaty Mohd Ali, Ezmin Abdullah
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Erosion development in AISI 316L stainless steel under pulsating water jet treatment Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-26 Sergej Hloch, Jakub Poloprudský, Filip Šiška, Tomáš Babinský, Akash Nag, Alice Chlupová, Tomáš Kruml
Erosion of solids by liquid droplets is a phenomenon which is a compromise between mechanical properties of the material and droplet hydrodynamic parameters. While a number of studies deal with the deformation of drops, the deformation evolution inside the material has not yet been revealed, mainly from the point of view of the time action of the impinging drops The mechanical response of AISI 316L
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Design of lateral dynamic control objectives for multi-wheeled distributed drive electric vehicles Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-23 Zili Liao, Lichun Cai, Qian Yang, Yunyin Zhang
The lateral dynamic control system for electric vehicles aims to improve vehicle performance, making it critical to propose reasonable lateral dynamic control objectives. Therefore, in this study, a novel lateral dynamic control objectives is proposed for multi-wheeled distributed drive electric vehicles. Initially, utilizing the classical two-degrees-of-freedom (2DOF) vehicle model, two initial yaw
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Pyrolysis characteristics and kinetic analysis of coconut shell and nutmeg shell for potential source of bioenergy Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-22 K. Ashwini, R. Resmi, Retheesh Reghu
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A unique SWB multi-slotted four-port highly isolated MIMO antenna loaded with metasurface for IOT applications-based machine learning verification Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-16 Md Afzalur Rahman, Samir Salem Al-Bawri, Wazie M. Abdulkawi, Khaled Aljaloud, Mohammad Tariqul Islam
This study introduces a MIMO antenna system incorporating an epsilon negative Meta Surface (MS). The system’s architects intended for it to have a large usable frequency range, high gain, narrow inter-component spacing, and superior isolation properties with four elements of MIMO antenna that are strategically organized in an orthogonal arrangement and a compact form factor measuring 41 × 41 × 1.6
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Effect of White-Portland cement containing micro and nano silica on the mechanical and freeze-thaw properties of self compacting mortars Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-14 Serkan Etli, Tekin Yılmaz, Osman Hansu
This study concentrated to investigate the influences of white-Portland cement (W-PC) containing silica fume (SF: micro-silica (µSi) and nano-silica (nSi)) as replacement (2–4 wt%) on mechanical (strength and durability), physical and microstructural behaviors of self-compacting mortars (SCMs) fabricated at 0.48–0.63 w/b ratios. In keeping with these purposes, besides of carrying out the workability
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Enhancing formability of Ti-6Al-4V cylindrical cups by pulsating hydroforming process: Experimental, numerical and microstructural investigations Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-14 Osman Öztürk, Mevlüt Aydın, Ömer Faruk Gökcepınar, Harun Mert İlbeyli, Habip Gökay Korkmaz, Yusuf Furkan Yapan, Murat Dilmeç, Hüseyin Selçuk Halkacı, Hasan Kotan, Haydar Livatyalı, Serkan Toros, Mevlüt Türköz
Ti-6Al-4V alloy sheet is an engineering material that is widely used due to its superior properties such as high strength-to-density ratio besides high temperature and corrosion resistance. However, its low formability at room temperature limits its wider applications. In this study, a cylindrical cup was hydroformed using a female die to examine how the pulsating effect would result under frictional
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Eliminating surface cracks in metal film-polymer substrate for reliable flexible piezoelectric devices Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-13 Syazwani Izrah Badrudin, Mimiwaty Mohd Noor, Muhammad Izzuddin Abd Samad, Nur Syaza Nazihah Zakaria, Jumril Yunas, Rhonira Latif
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Deep learning based asymmetrical autoencoder for PAPR reduction of CP-OFDM systems Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-13 Ezmin Abdullah, Kaharudin Dimyati, Wan Norsyafizan W. Muhamad, Nurain Izzati Shuhaimi, Roslina Mohamad, Nabil M. Hidayat
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A new model for viscosity prediction for silica-alumina-MWCNT/Water hybrid nanofluid using nonlinear curve fitting Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-12 Meihong Qu, Dheyaa J. Jasim, As'ad Alizadeh, S. Ali Eftekhari, Navid Nasajpour-Esfahani, Hussein Zekri, Soheil Salahshour, Davood Toghraie
One of the most crucial concerns is improving industrial equipment's ability to transmit heat at a faster rate, hence minimizing energy loss. Viscosity is one of the key elements determining heat transmission in fluids. Therefore, it is crucial to research the viscosity of nanofluids (NF). In this study, the effect of temperature (T) and the volume fraction of nanoparticles (φ) on the viscosity of
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Optimal algorithm for color medical encryption and compression images based on DNA coding and a hyperchaotic system in the moments Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-12 Ahmed Bencherqui, Mohamed Amine Tahiri, Hicham Karmouni, Mohammed Alfidi, Saad Motahhir, Mohamed Abouhawwash, S.S. Askar, Shuhuan Wen, Hassan Qjidaa, Mhamed Sayyouri
Currently, visual data security plays a significant role in various fields, especially in medical imaging. Addressing the challenges associated with limited key space and vulnerability to different types of attacks within current encryption schemes, this work proposes an optimal compression-encryption scheme for large medical images that incorporates elements of Archimedes' optimization algorithm,
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Front Matter 1 - Full Title Page (regular issues)/Special Issue Title page (special issues) Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-13
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Unloading sequence planning for autonomous robotic container-unloading system using A-star search algorithm Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-12 Eugene Auh, Juhwak Kim, Younghwan Joo, Jeongyeol Park, Geonuk Lee, Ilho Oh, Nabih Pico, Hyungpil Moon
In autonomous unloading systems, one of the major challenges is planning the unloading sequence in cluttered logistics container environments. Proper unloading sequence planning is crucial to avoid damage to the packages caused by collision and collapse. At the same time, the planned sequence has to minimize the effort during the unloading process, such as energy consumption, time taken, and distance
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Energy-latency trade-off analysis for scientific workflow in cloud environments: The role of processor utilization ratio and mean grey wolf optimizer Eng. Sci. Technol. Int. J. (IF 5.7) Pub Date : 2024-01-11 Mustafa Ibrahim Khaleel, Mejdl Safran, Sultan Alfarhood, Michelle Zhu
Cloud computing has demonstrated its effectiveness in handling complex data that requires substantial computational power, immediate responsiveness, and ample storage capacity. However, there are significant challenges when it comes to distributing intricate tasks, such as workflows structured in a Directed Acyclic Graph (DAG), across cloud resources. These challenges include increased energy consumption