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Your search keyword '"Shi, Jiadong"' showing total 126 results
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126 results on '"Shi, Jiadong"'

1. Real-CATS: A Practical Training Ground for Emerging Research on Cryptocurrency Cybercrime Detection

Author

Shi, Jiadong, Duan, Chunyu, Lei, Hao, and Wang, Liangmin

Subjects
Computer Science - Cryptography and Security, Computer Science - Computers and Society
Abstract

Cybercriminals pose a significant threat to blockchain trading security, causing $40.9 billion in losses in 2024. However, the lack of an effective real-world address dataset hinders the advancement of cybercrime detection research. The anti-cybercrime efforts of researchers from broader fields, such as statistics and artificial intelligence, are blocked by data scarcity. In this paper, we present Real-CATS, a Real-world dataset of Cryptocurrency Addresses with Transaction profileS, serving as a practical training ground for developing and assessing detection methods. Real-CATS comprises 103,203 criminal addresses from real-world reports and 106,196 benign addresses from exchange customers. It satifies the C3R characteristics (Comprehensiveness, Classifiability, Customizability, and Real-world Transferability), which are fundemental for practical detection of cryptocurrency cybercrime. The dataset provides three main functions: 1) effective evaluation of detection methods, 2) support for feature extensions, and 3) a new evaluation scenario for real-world deployment. Real-CATS also offers opportunities to expand cybercrime measurement studies. It is particularly beneficial for researchers without cryptocurrency-related knowledge to engage in this emerging research field. We hope that studies on cryptocurrency cybercrime detection will be promoted by an increasing number of cross-disciplinary researchers drawn to this versatile data platform. All datasets are available at https://github.com/sjdseu/Real-CATS, Comment: 13 pages, 5 figures

Published
2025

2. Quantum coherence and entanglement under the influence of decoherence

Author

Sun, Wen-Yang, Ding, A-Min, He, Juan, Shi, Jiadong, Wang, Le, Xu, Hui-Fang, Wang, Dong, and Ye, Liu

Subjects
Quantum Physics
Abstract

In this work, we delve into the dynamic traits of the relative entropy of quantum coherence (REQC) as the quantum system interacts with the different noisy channels, drawing comparisons with entanglement (concurrence). The research results demonstrate the broader prevalence and stronger robustness of the REQC as opposed to concurrence. It's worth noting that the bit flip channel cannot uphold a constant nonzero frozen the REQC, besides, the concurrence follows a pattern of temporary reduction to zero, followed by recovery after a certain time span. More importantly, the REQC maintains its presence consistently until reaching a critical threshold, whereas concurrence experiences completely attenuation to zero under the influence of phase damping and amplitude damping channels., Comment: to be published in Laser Physics Letters

Published
2024

18. ANTI-DROPPING TECHNOLOGY OF MICRO FLIPPABLE STAIR-CLIMBING ROBOT

Author

ZHANG ShiLong, WANG JianZhong, SHI JiaDong, and LIU XiaoJun

Subjects
Micro Mobile Robot, anti dropping impact, hyperelastic, elastic-plastic, Mechanical engineering and machinery, TJ1-1570, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Stair-climbing function of Micro Mobile Robot（ MMR） conflict with their portability. The Beijing Institute of Technology has developed a four-wheeled MMR which can climb stairs by flipping chassis. This robot weights 2. 5kg,so it is portable and can be deployed by throwing in short distance. In allusion to that robot,three concerns as well as assessments in dropping process have been put forward. The hyperelastic model of rubber and elastic-plastic model considering strain rate of metals were established,and a finite element model（ FEM） was established with ABAQUS furthermore. The FEM was tested on three typical working conditions of dropping horizontally,vertically and side-vertically by 1m height. Problems of the original structure were discussed and optimization measures were put forward,concerning tire,shell and motor shaft and so on.Simulation experiments have been done to confirm the validity of those measures. The results show that the dropping resistance is improved,and the optimized structure can sustain drops of 3 m.

Published
2016
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27. Wear Resistance under Different Temperatures of NiCr-Cr3C2 Coating Remelted by Tungsten Inert Gas Arc

Author

Zhao Xiang-wei, Yuan Jing-min, Shi Jiadong, Dong Tian-shun, Fu Bin-Guo, and Li Guolu

Subjects
010302 applied physics, Materials science, Mechanical Engineering, Gas tungsten arc welding, Metallurgy, Abrasive, chemistry.chemical_element, 02 engineering and technology, Substrate (printing), engineering.material, Tungsten, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, Coating, chemistry, Mechanics of Materials, 0103 physical sciences, engineering, General Materials Science, Nichrome, 0210 nano-technology, Inert gas, human activities
Abstract

In this work, a NiCr-Cr3C2 coating was prepared on the AISI 1045 steel substrate by plasma spraying, then subjected to tungsten inert gas arc (TIG) remelting treatment. The microstructure, hardness and the wear test under different temperatures (25, 200, 400, and 600 °C) of the NiCr-Cr3C2 coatings before and after remelting were studied comparatively. The results show that after TIG remelting, the internal structure of the coating was dense, and the defects were greatly reduced. The hardness of the remelted coating surface became uniform and increased from 1007 HV0.1 to 1141 HV0.1, with an increase of 13.3%. At different temperatures, the weight loss of the remelted coating was always less than that of the sprayed coating, with a significant reduction of about 75%. The friction coefficients of the remelted coating and sprayed coating at 25 and 200 °C were basically the same, while the friction coefficients of the remelted coating at 400 and 600 °C were smaller than that of the sprayed coating. The wear mechanism of the remelted coating under different temperature were abrasive wear and adhesive wear, while that of the sprayed coating were fatigue wear, abrasive wear, and adhesive wear. Therefore, the TIG remelting treatment can optimize the microstructure of the NiCr-Cr3C2 coating and remarkably improve the wear resistance.

Published
2020
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28. Different Cr Contents on the Microstructure and Tribomechanical Properties of Multi-Layered Diamond-Like Carbon Films Prepared by Unbalanced Magnetron Sputtering

Author

Guo-zheng Ma, Shi Jiadong, Jun-chao Li, Hai-dou Wang, Tang Ling, Cui-hong Han, Li-na Zhu, and Jiajie Kang

Subjects
010302 applied physics, Materials science, Diamond-like carbon, Mechanical Engineering, Oxide, chemistry.chemical_element, 02 engineering and technology, Sputter deposition, 021001 nanoscience & nanotechnology, Microstructure, 01 natural sciences, Carbide, chemistry.chemical_compound, chemistry, Mechanics of Materials, Sputtering, 0103 physical sciences, Surface roughness, General Materials Science, Composite material, 0210 nano-technology, Carbon
Abstract

To investigate the effects of Cr doping on the microstructure and tribological properties of multi-layered diamond-like carbon (DLC) films, Cr-DLC films with Cr contents ranging from 0 to 22 at.% were deposited on 0Cr19Ni10 stainless steel and Si wafer surfaces by unbalanced magnetron sputtering. The thickness of the transition layer is 180 nm and the Cr-DLC film ranging from 1.3 to 1.5 µm. The microstructure, mechanical and tribological properties of the films were systematically investigated at room temperature in atmospheric environment. Results show that increasing the Cr target current can effectively improve the incident particle density and reduce surface roughness. As a strong carbon metal, Cr has significant influence on the structure and properties of the film for bonding with carbon atoms during deposition. High-energy Cr particles are favorable for films to increase the sp3 hybrid bond ratio and reduce internal stress. The high-hardness sp3 hybrid phase, Cr carbide, oxide dispersion can effectively improve the mechanical properties of the film, but overdoping is detrimental for mechanical properties of the film. The internal stress shows a continuous trend of decreasing with the increasing Cr content and it reduced up to 80% compared with pure DLC films. The films prepared with Cr sputtering current of 0.4 A demonstrate the best tribological properties, and the friction coefficient and wear rate are 0.15 and 2.9 × 10−7 mm3/Nm, respectively.

Published
2020
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34. Biological activity validation of a computationally designed Rituximab/CD3 T cell engager targeting CD20+ cancers with multiple mechanisms of action

Author

Cai, Wenyan, primary, Dong, Jianbo, additional, Gallolu Kankanamalage, Sachith, additional, Titong, Allison, additional, Shi, Jiadong, additional, Jia, Zhejun, additional, Wang, Bo, additional, Huang, Cai, additional, Zhang, Jing, additional, Lin, Jun, additional, Kan, Steven Z, additional, Han, Shuhua, additional, Zhou, Joe, additional, and Liu, Yue, additional

Published
2021
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37. Abstract LB068: A novel CD20/CD3 T cell engager designed from Rituximab targeting CD20+ cancer with multiple mechanisms

Author

Cai, Wenyan, primary, Dong, Jianbo, additional, Kankanamalage, Sachith Gallolu, additional, Titong, Allison, additional, Shi, Jiadong, additional, Jia, Zhejun, additional, Wang, Bo, additional, Huang, Cai, additional, Zhang, Jing, additional, Lin, Jun, additional, Kan, Steven Z., additional, Zhou, Joe, additional, and Liu, Yue, additional

Published
2021
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40. A computationally designed Rituximab/CD3 T cell engager targeting CD20+ cancers with multiple mechanisms of action

Author

Cai, Wenyan, primary, Dong, Jianbo, additional, Kankanamalage, Sachith Gallolu, additional, Titong, Allison, additional, Shi, Jiadong, additional, Jia, Zhejun, additional, Wang, Bo, additional, Huang, Cai, additional, Zhang, Jing, additional, Lin, Jun, additional, Kan, Steven Z., additional, Zhou, Joe, additional, and Liu, Yue, additional

Published
2021
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43. Research on damage and failure behaviour of coated self-lubricating spherical plain bearings based on detection of friction torque and temperature rise.

Author

Liu, Yunfan, Ma, Guozheng, Qin, Hongling, Han, Cuihong, and Shi, Jiadong

Abstract

In this study, the wear failure behaviour of coated self-lubricating spherical plain bearings under different working conditions in the light-load and low-frequency range was studied using a swing wear life tester. The commercial GE17ES bearing was the main research object, and the wear state of the bearing was monitored in real time using torque and temperature rise signals. Furthermore, a scanning electron microscope and an energy dispersive X-ray spectroscope were adopted to analyse the wear failure mechanism of bearings. The results indicated that the friction torque and temperature rise signal changes were mainly divided into three stages, and the characteristics of similar changes could be maintained under different working conditions. Furthermore, at the end of the bearing life, the torque and temperature rise had abrupt changes almost at the same time, which indicated the occurrence of bearing failure. In general, the wear failure mechanisms of bearings included abrasive wear and adhesive wear. Moreover, fatigue wear and oxidation wear were under some conditions. The torque and temperature rise comprehensively reflected the service state of coated self-lubricating spherical plain bearings, which could be used as a physical criterion for determining bearing failure. These results had a strong prospect of engineering application, and were expected to provide a reference for determining the failure behaviour of multi-type coated self-lubricating spherical plain bearings in the future, and provided theoretical support for establishing relevant test standards. [ABSTRACT FROM AUTHOR]

Published
2022
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