A5101638215- Wireless Communication Security Techniques
- Energy Harvesting in Wireless Networks
- Advanced Wireless Communication Technologies
- Tribology and Lubrication Engineering
- Cooperative Communication and Network Coding
- Advanced Battery Materials and Technologies
- UAV Applications and Optimization
- Security in Wireless Sensor Networks
- Full-Duplex Wireless Communications
- Advancements in Battery Materials
- Distributed and Parallel Computing Systems
- Parallel Computing and Optimization Techniques
- Advanced MIMO Systems Optimization
- Advanced Sensor and Energy Harvesting Materials
- Synthesis and Properties of Aromatic Compounds
- Soft Robotics and Applications
- Cryptography and Data Security
- Carbon Nanotubes in Composites
- Advanced Neural Network Applications
- IoT Networks and Protocols
- Microwave Engineering and Waveguides
- Chaos-based Image/Signal Encryption
- Advanced Data Storage Technologies
- Target Tracking and Data Fusion in Sensor Networks
- Advanced machining processes and optimization
Center for High Pressure Science and Technology Advanced Research
2020-2025
Chinese Academy of Sciences
2008-2025
University of Science and Technology of China
2025
Capital Normal University
2024
Huazhong University of Science and Technology
2023-2024
Wuhan Engineering Science & Technology Institute
2024
PLA Academy of Military Science
2023-2024
State Key Laboratory of Digital Manufacturing Equipment and Technology
2023
Sun Yat-sen University
2023
University of Chicago
2023
In this paper, we consider covert communications for bistatic backscatter systems, where a tag transmits information passively to reader by reflecting incident carrier signals with artificial noise (AN) generated from dedicated emitter (CE) under the supervision of warden. By exploiting channel uncertainty introduced CE, analytically derive warden's minimum sum error probabilities evaluate communication covertness. We find that covertness can be improved reducing tag's reflection...
Alpa automates model-parallel training of large deep learning (DL) models by generating execution plans that unify data, operator, and pipeline parallelism. Existing systems either require users to manually create a parallelization plan or automatically generate one from limited space model parallelism configurations. They do not suffice scale out complex DL on distributed compute devices. distributes the viewing parallelisms as two hierarchical levels: inter-operator intra-operator...
In this letter, we consider the requirement of information freshness in covert communications for first time. With artificial noise (AN) generated from a full-duplex (FD) receiver, formulate covertness maximization problem under average age (AoI) constraint to optimize transmit probability signal. particular, not only represents generation rate signal but also prior alternative hypothesis communications, which builds up bridge between and communication covertness. Our analysis shows that...
Solid-state topochemical polymerization (SSTP) is a promising method to construct functional crystalline polymeric materials, but in contrast various reactions that happen solution, only very limited types of SSTP are reported. Diels–Alder (DA) and dehydro-DA (DDA) textbook for preparing six-membered rings solution scarcely seen solid-state synthesis. Here, using multiple cutting-edge techniques, we demonstrate the solid 1,4-diphenylbutadiyne (DPB) undergoes DDA reaction under 10–20 GPa with...
Saturated sp3-carbon nanothreads (CNTh) have garnered significant interest due to their predicted high Young's modulus and thermal conductivity. While the incorporation of heteroatoms into central ring has been shown influence formation CNTh yield chemically homogeneous products, impact pendant groups on polymerization process remains underexplored. In this study, we investigate pressure-induced phenol, revealing two phase transitions occurring below 0.5 4 GPa. Above 20 GPa, phenol...
The BO@CF‖Li half-cells can be stably cycled for 600 cycles with an average coulombic efficiency of 98.8%, enabling dendrite-free lithium deposition and stripping.
Abstract Hard carbon is recognized as a promising anode material for sodium‐ion batteries due to its low voltage plateau and abundant availability. However, designing advanced hard anodes that exhibit both high specific capacity initial Coulombic efficiency (ICE) remains substantial challenge. This study introduces catalyst‐assisted chemical vapor deposition (CA‐CVD) method utilizing CH 4 the gas precursor porous substrate prepare with controllable graphite domains rich closed pores. The...
In this paper, we study the problem of Web forum crawling. has now become an important data source many applications; while crawling is still a challenging task due to complex in-site link structures and login controls most sites. Without carefully selecting traversal path, generic crawler usually downloads duplicate invalid pages from forums, thus wastes both precious bandwidth limited storage space. To crawl more effectively efficiently, in propose automatic approach exploring appropriate...
In this paper, we investigate the energy-efficient secure uplink transmission for wireless powered Internet of Things (IoT), where one energy-constrained source and multiple relays harvest energy from power beacons (PBs) in presence a passive eavesdropper. To perform communications, consider three relay selection schemes with best PB selected by source, i.e., is randomly, (BRBP), respectively. For each scheme, exact closed-form expressions outage probability (POP), secrecy (SOP), efficiency...
In this paper, we investigate secure communication in a hybrid relay (HR)-assisted wireless powered cooperative network (WPCCN), where an eavesdropper tries to intercept the data transmitted by source user and HR simultaneously. The has ability energy-constrained multiple users downlink received confidential information uplink. particular, full-duplex destination-based jamming (FD-DBJ) strategy is exploited improve secrecy performance. Moreover, order conduct effective communications, design...
In this paper, we consider the secure green-oriented multiuser scheduling for wireless-powered Internet of Things (IoT) scenario, in which multiple source sensors communicate with a controller assisted by an intermediate sensor existence passive tapping device. Due to limited energy, all must acquire energy from external power beacons (PBs). Specifically, security improvement, introduce two schemes possessing optimal PB chosen relay, i.e., best is scheduled random way (BSR), while decided...
Substituted polyacetylene is expected to improve the chemical stability, physical properties, and combine new functions backbones, but its diversity very limited. Here, by applying external pressure on solid acetylenedicarboxylic acid, we report first crystalline poly-dicarboxylacetylene with every carbon trans-polyacetylene backbone bonded a carboxyl group, which hard synthesize traditional methods. The polymerization evidenced be topochemical reaction help of hydrogen bonds. This unique...
Traditional conductive materials do not meet the increasing requirements of electronic products because such materials' high rigidity, poor flexibility, and slow biodegradation after disposal. Preparing flexible with excellent mechanical properties is an active area research. The key to lies in combination polymer matrix components. This can be achieved by making a film renewable nano-microcrystalline cellulose (NCC) reduced graphene oxide (rGO) electrical conductivity-by simple filtration...
Capacity shortage problem extensively occurs in the developing countries. Microgrids comprising of distributed generation provides a solution to this capacity problem. However an optimal expansion-planning microgrid is necessary satisfy load demand most economically. In current research like wind, solar, diesel along with energy storage carried out considering uncertainties associated wind speed, solar radiation and fluctuation. The account very important as it results more reliable robust...
Abstract Bolted joints are one of the most common fastening methods in engineering applications. To meet requirements structural parts, torque method is often used for controlling bolted joint performance. However, only a few investigations have been carried out on conversion efficiency bolt to tensile force, leading uncertainty and potential safety hazards during tightening. In order study input distribution overcome problems caused by Motosh experimental investigations, new energy-based...
Analyzing of nonlinear carrying performance hydrostatic ram is among key research questions to improve heavy machine tools because the machining precision will be directly influenced by it. A dynamic model supporting characters for developed in this work. Modified Reynolds equation resolved finite difference method numerically determine capability. Dynamic equilibrium under cutting force impact solved Runge–Kutta obtain variation tool tip position and evaluate accuracy. An optimal oil supply...
In this paper, we investigate the optimal design of a wireless-powered covert communication (WP-CC) system, where full-duplex (FD) receiver transmits artificial noise (AN) to simultaneously charge an energy-constrained transmitter and confuse warden’s detection on transmitter’s activity. order achieve higher level covertness, propose probabilistic accumulate-then-transmit (ATT) protocol, is able adjust prior probability conditioned available energy being sufficient, i.e., <inline-formula...
Continuum robots have received much attention because of their high degree flexibility. For modeling the kinematics continuum robots, piecewise constant curvature model is widely used, but it has several drawbacks. Firstly, forward calculation computational complexity. Secondly, numerical solution inverse kinematic Jacobian matrix difficult to describe for multi-segments robots. And thirdly, does not take case torsion into account. To address above issues, this paper proposes a based on Lie...
This paper investigates an uplink transmission of Internet Things (IoT) in unmanned aerial vehicle (UAV)enabled wireless powered communication (WPC) network, where a source sensor and multiple intermediate sensors harvest energy from dedicated power transmitter deployed at the UAV. In order to help transmit data packet access point, is selected as relay based on their links with source. Then, we derive closed-form expressions secrecy outage probability (SOP) secure efficiency (SEE)....
The lubricant film of hydrostatic circular pad in the heavy-duty rotary table is affected by roughness, thermal and hydrodynamic effect, which can cut down load-carrying capacity machining accuracy machine tool. In this paper, a coupled energy equation with mean Reynolds based on Christensen’s stochastic model rough surfaces presented to analyze temperature rising, pressure distribution pad. equation, momentum continuity are solved using finite difference method obtain characteristics film....