Results 81 to 90 of about 7,286 (186)

Energy‐Aware RF Fingerprinting for Device Identification in Ultra‐Low‐Power IoT Systems

Engineering Reports, Volume 7, Issue 7, July 2025.
We propose an energy‐aware RF fingerprinting method for ultra‐low‐power IoT using two deep learning models. RFNet achieves 97.48% accuracy while TinyRFNet reaches 93.19% with far fewer parameters. Dynamic model selection by battery level and confidence yields 94.54% accuracy and 17% energy savings.
Emmanuel Osei Owusu, Danlard Iddrisu, Griffith Selorm Klogo, Kwame Osei Boateng, Emmanuel Kofi Akowuah   +4 more
wiley   +1 more source

Effect of ultrasonic surface rolling processing on surface integrity and mechanical properties of ZL205A alloy

Journal of Materials Research and Technology
This study investigates the effects of ultrasonic surface rolling process (USRP) parameters—static pressure, feed speed, ultrasonic amplitude, and rolling passes—on the surface integrity, mechanical properties, and microstructural evolution of T6 heat ...
Hui-Hu Lu, Jian-Shan Han, Guang Li, Yi-Dong Zhang, Ling-Yun Du, Yan-Lan Li, Da-Hui Chen   +6 more
doaj   +1 more source

Design and Validation of a Software Defined Radio Testbed for DVB-T Transmission [PDF]

, 2014
This paper describes the design and validation of a Software Defined Radio (SDR) testbed, which can be used for Digital Television transmission using the Digital Video Broadcasting - Terrestrial (DVB-T) standard.
Banelli, P., Baruffa, G., Rugini, L.
core   +1 more source

Simultaneously improved strength and ductility of selective electron beam melted Ti6Al4V using ultrasonic surface rolling process

Journal of Materials Research and Technology
In this study, surface ultrasonic rolling processing (USRP) was used to strengthen the surface of Ti6Al4V via selective electron beam melting (SEBM), and the effect of different loads (200 N, 400 N, 600 N, 800 N, 1000 N) during USRP on the microstructure
Zhongqiang Liu, Haizhou Lu, Chiyuan Cai, Youwang Luo, Guan Xu, Weidong Mao, Zhaoyao Zhou, Zhiyu Xiao   +7 more
doaj   +1 more source

Study on the enhancement of surface integrity and wear resistance of iron-based coatings by ultrasonic surface rolling process

Journal of Materials Research and Technology
This study explores the fabrication of iron-based coatings on 45CrNiMoVA steel using laser cladding technology. Laser cladding offers advantages such as a low dilution rate and a dense microstructure but is hindered by drawbacks like poor surface finish ...
Xinsheng Wang, Yang Zheng, Jian Liu, Zhihai Cai, Xian Du, Haidou Wang   +5 more
doaj   +1 more source

Corrosion damage characteristics of aluminum alloy strengthened by ultrasonic surface rolling processing and its influence on fatigue behavior

Journal of Materials Research and Technology
Ultrasonic surface rolling processing (USRP) is used to strengthen 7075 aluminum alloy, the corrosion behavior during immersion is studied by electrochemical impedance spectroscopy, and fatigue performance of different samples under corrosion was tested.
Shuaixing Wang, Tianjian Yu, Lingyun Zhong, Xiaohui Liu, Shujing Liu, Chao Shi, Nan Du   +6 more
doaj   +1 more source

Formation mechanism of surface gradient microstructure and mechanical properties evolution of Mg–Y-Nd-Gd-Zr alloy by ultrasonic rolling

Journal of Materials Research and Technology
The evolution mechanism of the microstructure and mechanical properties of a Mg–Y-Nd-Gd-Zr alloy subjected to different numbers of passes of the ultrasonic surface rolling process (USRP) was investigated.
Sheng Wang, Wei Li, Linbo Chen, Lin Luo, Gang Meng, Guoqi Chang, Qiaodi Liu   +6 more
doaj   +1 more source

Mechanism of microstructure and mechanical properties improvement through ultrasonic rolling pressing layer-by-layer and adaptive ultrasonic rolling method research in AlSi10Mg laser powder bed fused

Journal of Materials Research and Technology
In the process of laser powder bed fusion (L-PBF), the high-speed movement of the laser heat source causes uneven temperature and stress fields, thus, it results in dendrites, pores, micro cracks and residual stresses.
Bo Qian, Peng Dai, Man Zhao, Qiyue Cui, Gang Liu, Qingsong Wei, Ruidi Li, Steven Y. Liang   +7 more
doaj   +1 more source

Performance Analysis of the Cognitive Radio Network with Opportunistic Spectrum Access [PDF]

International Journal of Electronics and Telecommunications, 2018
Radosław Chęciński, Anna Kaszuba-Chęcińska, Michał Kryk, Jerzy Łopatka, Krzysztof Malon, Paweł Skokowski   +5 more
doaj   +1 more source

Significantly extending the gradient layer and mechanical properties of Mg alloys by texture optimization

Materials Research Letters
Considerable efforts have been made to prepare a thicker gradient layer, while the reported thickness of the gradient layer for Mg alloys is often below 700 µm.
Bo Guan, Jing Xu, Rui Fu, Shiyuan Xu, Xiao Li, Yunfei Jia, Qiang Hu, Yunchang Xin   +7 more
doaj   +1 more source