A5100650412- Advanced Decision-Making Techniques
- Higher Education and Teaching Methods
- Nuclear Materials and Properties
- Molecular Biology Techniques and Applications
- Fusion materials and technologies
- Cryptography and Data Security
- Advanced Computational Techniques and Applications
- Advanced Fiber Laser Technologies
- Advanced Sensor and Control Systems
- Advanced Fiber Optic Sensors
- High-Voltage Power Transmission Systems
- Power Systems and Renewable Energy
- Advanced Image Fusion Techniques
- Educational Technology and Assessment
- Advanced DC-DC Converters
- Simulation and Modeling Applications
- Nanocluster Synthesis and Applications
- Magnetic confinement fusion research
- Educational Technology and Pedagogy
- E-commerce and Technology Innovations
- Magneto-Optical Properties and Applications
- Identification and Quantification in Food
- Advanced Data Storage Technologies
- Advanced Research in Systems and Signal Processing
- Advanced Battery Technologies Research
Beijing University of Posts and Telecommunications
2009-2024
Chinese Academy of Sciences
2012-2023
Xiamen University of Technology
2023
Jimei University
2013-2023
Xiamen University
2023
University of Science and Technology of China
2019-2023
Aerospace Information Research Institute
2022-2023
University of Chinese Academy of Sciences
2022-2023
National Space Science Center
2019-2023
Institute of Plasma Physics
2021-2022
Abstract Conventional nanozymes often possess low active site density. Pursuing effective strategies for constructing highly single‐atomic nanosystems with maximum atom utilization efficiency is exceptionally attractive. Herein, we develop a facile “missing‐linker‐confined coordination” strategy to fabricate two self‐assembled nanozymes, i.e., conventional nanozyme (NE) and (SAE), which respectively consist of Pt nanoparticles single atoms as catalytic sites anchored in metal–organic...
With the rapid growth of Internet Things (IoT), massive terminal devices are connected to network, generating a large amount IoT data. The reliable sharing data is crucial for fields such as smart home and healthcare, it promotes intelligence provides faster problem solutions. Traditional schemes usually rely on trusted centralized server achieve each attempted access from users data, which faces serious challenges single point failure, low reliability, an opaque process in current...
Abstract Conventional nanozymes often possess low active site density. Pursuing effective strategies for constructing highly single‐atomic nanosystems with maximum atom utilization efficiency is exceptionally attractive. Herein, we develop a facile “missing‐linker‐confined coordination” strategy to fabricate two self‐assembled nanozymes, i.e., conventional nanozyme (NE) and (SAE), which respectively consist of Pt nanoparticles single atoms as catalytic sites anchored in metal–organic...
IPTV is a system where digital television service delivered by using IP packets over broadband network infrastructure. can be operated through telephone line that installed almost in all houses. Transmitted video streams take bandwidth and also need priority running queue with other services the providerpsilas network. Such has effect implementation quality of (QoS) into QoS mechanisms allow best way to transfer for different traffics Consumers want their programs smooth visually excellent....
Asteroid impacts pose a major threat to all life on Earth. The age of the dinosaurs was abruptly ended by 10-km-diameter asteroid. Currently, nuclear device is only means deflecting large Potentially Hazardous Asteroids (PHAs) away from an Earth-impacting trajectory. Enhanced Kinetic Impactor (EKI) concept proposed deflect PHAs via maneuvering space rocks. First, unmanned spacecraft launched rendezvous with intermediate Near-Earth (NEA). Then, more than one hundred tons rocks are collected...
Fish schools are capable of simultaneous linear acceleration. To reveal the underlying hydrodynamic mechanism, we numerically investigate how Reynolds number Re=1000–2000, Strouhal St=0.2–0.7, and wavelength λ=0.5–2 affect mean net thrust propulsive efficiency two side-by-side hydrofoils undulating in anti-phase. In total, 550 cases simulated using immersed boundary method. The increases significantly with number, yet only slightly number. We apply a symbolic regression algorithm to...
A Be δ-doped GaAs/AlAs three quantum wells emitter in the terahertz range is fabricated and electroluminescence investigated. An peak centered at 23.4 meV with a full width half maximum of 4.2 observed under bias 2 V low temperature (T=4.5 K). The emission attributed to 2p 1s internal transitions acceptors center GaAs well. current-voltage characteristics device measured different temperatures demonstrate strong negative differential resistance dependence.
Based on the biased centrosymmetric photorefractive media, we investigate numerically propagation and interaction properties of Airy–Gaussian beams. The single beam forms one-component breather with help nonlinearity. two beams can be controlled by adjusting relative parameters, such as nonlinearity, transverse distance phase incident two-component ladder structure observed for both in-phase out-of-phase cases when self-acceleration property is balanced one- or three-component breathers case...
This paper presents a two-stage DC/DC converter with high efficiency utilized in an electronic power conditioner (EPC), which is widely applicable satellite communications, etc. The galvanically isolated contains two cascaded converters: buck converter, pre-regulator operating under closed-loop condition, and push–pull intended to boost the input voltage, open-loop condition. In switches, including main switches rectifier diodes, operate zero-voltage switching (ZVS) zero-current (ZCS) at...
We theoretically analyze and experimentally demonstrate a simple method for adjusting the chirp of chirped fiber gratings by temperature, while central wavelength is temperature insensitive. Chirped grating with tapered cross-section area mounted under tension in negative thermal-expansion coefficients material. The determined tension, almost does not vary after packaging. can be adjusted temperature. package exhibits linear variation -0.00051 nm/cm//spl deg/C, coefficient -0.0018 nm//spl deg/C.
Plasma-wall interaction is one of the key issues in tokamaks, as material erosion and deposition will strongly influence lifetime plasma facing materials, fuel retention performance. Material migration have been firstly analyzed after 2017 experimental campaign EAST with tungsten (W) upper divertor, molybdenum inner wall graphite lower divertor. It found that deposited elements on plasma-facing materials (PFMs) mainly consisted Li, C, O, W Mo etc, which was from conditioning sputtering PFMs....
Anomaly detection of hyperspectral remote sensing data has recently become more attractive in image processing. The low-rank and sparse matrix decomposition-based anomaly algorithm (LRaSMD) exhibits poor performance complex scenes with multiple background edges noise. Therefore, this study proposes a weighted method. First, using the idea decomposition mathematics, original is reconstructed into three sub-matrices low rank, small sparsity representing noise, respectively. Second, to suppress...
Since the electronic power conditioner (EPC) is a crucial part of space traveling-wave tube amplifier (STWTA), its reliability issue must be considered. The most effective way to prevent insulation breakdown potting. Silicone elastomers are commonly used as an encapsulant for EPC because their good physical and electrical properties. properties interfaces change under influence γ-radiation, which may result in failure potted modules. In this work, comprehensive evaluation methodology...
Secure storage and computing of ciphertext data is an important research area in cloud computing. Homomorphic encryption (HE) a popular technique, but most homomorphic requires using the same public key. This restricts application scenarios compromises security system. To address this issue, we propose verifiable multi-key secure system for off-line non-real-time data, which solves issue with double-trapdoor HE scheme. Additionally, lightweight commitment algorithm(LC) that generates...
In the past 20 years, development of China's e-sports industry has played an important role in stimulating economic momentum, empowering sports industry, driving cultural travel and deriving media equipment. At present, dissemination narrative ability competition China is mainly reflected following aspects as public opinion fermentation, mode influence degree. Hangzhou Asian Games, short live video e-sports, a part mainstream commercial platforms, brought great power reporting competitions....
We theoretically investigate the transmission probability and persistent current in an open quantum ring threaded by magnetic flux. From numerical results, we find that two observable quantities both show a periodic characteristic with increase of flux, they strongly depend on dimensionless wave vector central angle as well
The application and working principle of piezoelectric insulin pump are analyzed. design using elements to drive the push type was proposed. A two serial chamber is selected as resource injector pushed by used achieve transporting liquid medicine accurately. experimental device designed researched. can transport has self-lock ability meanwhile. Even when output back pressure high, flow will not happen. test results showed: with 180 Hz driving signal, reach 37.5 ¿L.