Muhammad Asim^1,#, Muhammad Amin Shahid^1,#, Abdullah Khan¹, Muhammad Ishaq¹, Jawad Khan^2,*, Syed Qamrun Nisa³, Muhammad Amir Khan⁴, Ines Hilali Jaghdam⁵

CMC-Computers, Materials & Continua, Vol.88, No.3, 2026, DOI:10.32604/cmc.2026.083596 - 23 July 2026

Abstract Indoor object detection presents unique challenges such as occlusions, varying lighting conditions, and cluttered environments. While several object detection frameworks, including RetinaNet, Faster R-CNN, SSD, and EfficientDet, have been proposed, they often suffer from high computational cost, reduced inference speed, and limited accuracy in terms of mean Average Precision (mAP), particularly in real-time scenarios. In this study, lightweight YOLO variants, namely YOLOv7, YOLOv8s, YOLOv9s, and a fine-tuned YOLOv9s which considers the optimized training strategy based on albumentations. All the models are evaluated for indoor object detection using the RGB TUT Indoor dataset. The models are… More >

Hongliang Tian, Xiaoke Liu^*, Bolin Song, Chenying Pei

CMC-Computers, Materials & Continua, Vol.88, No.3, 2026, DOI:10.32604/cmc.2026.082430 - 23 July 2026

Abstract In the intelligent inspection of power systems, the detection of equipment defects is confronted with problems such as low background discrimination, multi-scale morphological differences, and the difficulty in identifying small targets and fine-grained defects, which makes it hard for existing models to balance detection accuracy and computational efficiency. To address this, this study proposes an improved lightweight detection framework, GRID-YOLO. This framework enhances the semantic discrimination ability of the backbone network for complex defects by introducing a cross-stage hierarchical multi-cognitive spatial attention module (C2MSA), designs an enhanced multi-scale bidirectional feature pyramid network (EMFPN) to achieve… More >

Ashish Phogat¹, Akash Ahlawat¹, Virendra Singh², Deepak Chhabra^1,*

CMC-Computers, Materials & Continua, Vol.88, No.3, 2026, DOI:10.32604/cmc.2026.080735 - 23 July 2026

Abstract Polyether ether ketone (PEEK) is a radical filament with excellent strength equivalent to cortical bone and high thermal-mechanical properties. PEEK’s acquisition is acceptable in the fabrication of cranio-maxillofacial implants because of its exceptional strength-to-weight ratio and biocompatibility. However, its implementation in fused filament fabrication (FFF) is impeded by the lack of a cohesive optimisation framework that involves varying vital parameters: layer height, infill density and two post-process parameters: annealing temperature, annealing time, which affect its mechanical performance. This research work introduces a comprehensive methodology that integrates experimental design, hybrid Genetic Algorithm Artificial Neural Network (GA-ANN)… More >

Yan Shi^1,2,*, Rong Zhuang², Yunshan Bai², Wenguo Xiang¹, Cai Liang¹

Energy Engineering, Vol.123, No.8, 2026, DOI:10.32604/ee.2026.082971 - 12 July 2026

Abstract The performance evaluation of gas turbine inlet air filtration systems is commonly based on standardized laboratory testing; however, discrepancies frequently arise between laboratory results and actual operating performance. In this study, an on-site testing apparatus was developed to investigate filtration behavior under realistic operating conditions. Field measurements were conducted to analyze pressure loss evolution, particle-size-dependent filtration efficiency, and the influence of environmental parameters, including temperature, humidity, and ambient particulate concentration. Results show that filter pressure loss increased progressively with operational loading, while short-term fluctuations were associated with variations in environmental conditions. Filtration efficiency exhibited an… More >

Omar Ghoulam¹, Hind Talbi^1,2, Kamal Amghar¹, Hamza Faraji^3,*, Saloua Senhaji⁴, Ismael Driouch¹

Energy Engineering, Vol.123, No.8, 2026, DOI:10.32604/ee.2026.076813 - 12 July 2026

Abstract This study numerically investigates turbulent flow and thermal performance in evaporator tubes equipped with rectangular partitions positioned at different locations. Two configurations are analyzed: (A) partitions on the top wall, center of channel, and bottom wall, and (B) partitions on the bottom wall, center of channel, and top wall. In addition, we examine the effect of varying the positions of the obstacles (S=D2,S=D,S=5D4, andS=3D/2) and the inclination angle (θ=60∘, θ=75∘, θ=90∘, θ=105∘ and θ=120∘) of the detached obstacle relative to the walls, an innovative aspect that had not been addressed in previous studies. More >

Boqiang Zong¹, Yungui Guo^2,*, Ningwei Cai³

Journal of Psychology in Africa, Vol.36, No.3, pp. 311-319, 2026, DOI:10.32604/jpa.2026.078831 - 30 June 2026

Abstract This study investigated the role of perceived insider status and responsible behavior in the relationship between servant leadership and task performance in the manufacturing, retail, and service sectors. Self-reported survey data were collected from 667 employees across multiple Chinese organizations (females = 52.2%, predominantly aged 26–45 72.0%) and were analyzed using structural equation modeling. Results of testing a sequential mediation model showed that servant leadership is associated with higher task performance. Responsible behavior acts as a partial independent mediator, accounting for 57.24% of the total effect. Importantly, perceived insider status and responsible behavior were found More >

Gen Li^1,2, Shuhan Liu², Junhao Cheng², Ting He², Zhihong Chen^1,*, Baoyang Lu^1,2,*

Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.079972 - 30 June 2026

Abstract Hydrogel strain sensors are widely used in wearable electronics, human-machine interfaces, flexible electronics, owing to their ability to convert mechanical deformation into electrical signals. This function requires sensor materials to possess both high compliance and electrical conductivity. Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has emerged as an ideal candidate for hydrogel strain sensors due to its soft and flexible mechanical properties, tunable mechanical performance, mixed ionic-electronic conductivity, and excellent processability. Although extensive research has been conducted on PEDOT:PSS-based hydrogel strain sensors, there is currently no systematic review that elucidates the translation pathway from high-performance materials design and advanced fabrication More >

Izzat bin Mat Samudin¹, Muhammad Adam Johan bin Muhammad Affindy¹, Quanjin Ma², Nabilah Afiqah binti Mohd Radzuan^1,*

Journal of Polymer Materials, Vol.43, No.2, 2026, DOI:10.32604/jpm.2026.077219 - 30 June 2026

Abstract Lattice structures fabricated through additive manufacturing (AM) offer exceptional strength-to-weight ratios, as their geometries allow them to carry high loads with far less material than solid components. When paired with polylactic acid (PLA), they combine biodegradability with ease of processing, allowing the structures to be produced efficiently while also offering an environmentally friendly material option. However, comparative studies across different lattice types under uniform conditions remain limited, as many existing studies only focus on a single geometry type. Therefore, this study investigates the compressive performance of PLA lattice structures, which include body-centered cubic (BCC), honeycomb… More > Graphic Abstract

Conghai Chen¹, Dingran Sun², Yikai Chen², Jianxin Xu^2,*, Hua Wang²

FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.6, 2026, DOI:10.32604/fdmp.2026.082984 - 30 June 2026

Abstract Serpentine heat exchangers are extensively used in energy and chemical engineering owing to their compact geometry and high thermal performance. To improve their efficiency, three-dimensional numerical simulations are conducted using the SST k-ω turbulence model for both serpentine and straight tubes fitted with twisted tape inserts. Three twist ratios (y = 5.77, 8.57, 12.48) are examined across a Reynolds number range of 10,000 to 22,000. Results show that the average Nusselt number increases with Reynolds number, while the friction factor decreases. In particular, due to curvature-driven secondary motions, serpentine configurations consistently outperform straight tubes in thermal… More >

Qinfeng Pan¹, Wei Zhang¹, Hao Chen¹, Lin Pang², Xiang Liu^1,*, Chun Chieh Yip³

Structural Durability & Health Monitoring, Vol.20, No.4, 2026, DOI:10.32604/sdhm.2026.083328 - 30 June 2026

Abstract Ultra-high-performance concrete (UHPC) exhibits high strength, toughness, and durability, making it an excellent candidate for integration with novel high-ductility, high-strength negative Poisson’s ratio (NPR) steel bars. This combination shows promising applications in the fields of bridges and buildings. This study investigates the bonding performance of various types of NPR bars (smooth NPR bars, spiral rib NPR bars, and NPR steel strands) with UHPC as the concrete matrix. It examines the effects of bond length, bar diameter, and NPR bar type on bonding performance, comparing these results with those of normal concrete (NC). A predictive model… More >