Results 1 to 10 of about 669,891 (167)

DGF-YOLO: A Degradation-Guided Feature Enhancement Method for Small-Scale Pedestrian Detection in UAV Images [PDF]

Journal of Imaging
Small-scale pedestrians in UAV imagery often exhibit limited pixel coverage, weak texture, and severe background interference, while progressive network downsampling can further degrade their short-side structures and increase missed detections.
Boyu Wang, Jingguo Lv, Shuwei Huang, Yingqi Bai   +3 more
doaj   +2 more sources

Degradation and Regeneration of Soil Structure in Intensified Paddy Fields: Plant–Soil Interactions, Ecological Effects, and Restoration Pathways [PDF]

Plants
Intensified paddy production plays a crucial role in sustaining rice productivity and food security; however, long-term high-frequency puddling, heavy machinery operations under wet soil conditions, simplified cropping systems, and insufficient organic ...
Meng Fang, Jiahao Shen, Gan Liu, Chirui Zhang, Zhong Tang   +4 more
doaj   +2 more sources

Review on structural damage rehabilitation and performance assessment of asphalt pavements

Reviews on Advanced Materials Science, 2021
Asphalt pavements have been extensively used in highway system. However, a great number of asphalt pavements suffer from early distresses after servicing for about 2–3 years, which leads to frequent rehabilitation and increased maintenance cost.
Wang Hua-Ping, Guo Yan-Xin, Wu Meng-Yi, Xiang Kang, Sun Shi-Rong   +4 more
doaj   +1 more source

Crushing behaviour of composite square honeycomb structure: a finite element analysis

Journal of Mechanical Engineering and Sciences, 2017
This paper investigates the compression properties of square honeycomb core materials based on glass fibre reinforced plastic. The objective of this project is to determine the failure strength and energy absorption of the square honeycomb structure and
Z. Ansari, C.W. Tan, M.R.M. Rejab, D. Bachtiar, J. Siregar, M.Y.M. Zuhri, N.S.D.M. Marzuki   +6 more
doaj   +1 more source

Design of portable 3-axis filament winding machine with inexpensive control system

Journal of Mechanical Engineering and Sciences, 2018
Filament winding technology is one of the fundamental fabrication methods invcomposite material fields, which has a high degree of automation. It is the process invwhich continuous strands or filament of fibres is wound on the mandrel, which is suitable
Ma Quanjin, M.R.M. Rejab, I.M. Sahat, M. Amiruddin, D. Bachtiar, J.P. Siregar, M.I. Ibrahim   +6 more
doaj   +1 more source

Effect of microwave treatment on tensile properties of sugar palm fibre reinforced thermoplastic polyurethane composites

Defence Technology, 2018
The effect of microwave treatment on the tensile properties of treated sugar palm fibre with 6% NaOH reinforced thermoplastic polyurethane composites was investigated. Firstly, the sugar palm fibres were treated by 6% alkali solution.
A.A. Mohammed, D. Bachtiar, M.R.M. Rejab, J.P. Siregar   +3 more
doaj   +1 more source

Reduced-Reference Stereoscopic Image Quality Assessment Using Gradient Sparse Representation and Structural Degradation

IEEE Access, 2021
Reduced-reference stereoscopic image quality assessment (RRSIQA) models evaluate stereoscopic image quality degradation with partial information about the “ideal-quality” reference stereopair.
Jian Ma, Guoming Xu, Xiyu Han
doaj   +1 more source

Silk structure and degradation

Colloids and Surfaces B: Biointerfaces, 2015
To investigate the structure of silk and its degradation properties, we have monitored the structure of silk using scanning electron microscopy and frozen sections. Raw silk and degummed raw silk were immersed in four types of degradation solutions for 156 d to observe their degradation properties. The subcutaneous implants in rats were removed after 7,
Liu, Bin, Song, Yu-wei, Jin, Li, Wang, Zhi-jian, Pu, De-yong, Lin, Shao-qiang, Zhou, Chan, You, Hua-jian, Ma, Yan, Li, Jin-min, Yang, Li, Sung, K.L. Paul, Zhang, Yao-guang   +12 more
openaire   +2 more sources

The performance of mengkuang leaf fiber reinforced low density polyethylene composites

Journal of Mechanical Engineering and Sciences, 2018
The performance of mengkuang leaf fiber (MLF) reinforced low density polyethylene (LDPE) composites with different fiber volume and different mesh sizes were studied.
N.A. Halim, J.P. Siregar, D. Mathivanan, D. Bachtiar, Z. Ghazali, M.R.M Rejab, T. Tezara   +6 more
doaj   +1 more source

Crystal Structure of the MecA Degradation Tag [PDF]

Journal of Biological Chemistry, 2009
MecA is an adaptor protein that regulates the assembly and activity of the ATP-dependent ClpCP protease in Bacillus subtilis. MecA contains two domains. Although the amino-terminal domain of MecA recruits substrate proteins such as ComK and ComS, the carboxyl-terminal domain (residues 121-218) has dual roles in the regulation and function of ClpCP ...
Feng, Wang, Ziqing, Mei, Yutao, Qi, Chuangye, Yan, Siheng, Xiang, Zhiyuan, Zhou, Qi, Hu, Jiawei, Wang, Yigong, Shi   +8 more
openaire   +2 more sources