A5100738842- Poverty, Education, and Child Welfare
- Manufacturing Process and Optimization
- Optical measurement and interference techniques
- Indoor and Outdoor Localization Technologies
- Fatigue and fracture mechanics
- Soft Robotics and Applications
- Thin-Film Transistor Technologies
- GNSS positioning and interference
- Power Systems and Technologies
- Network Time Synchronization Technologies
- Spine and Intervertebral Disc Pathology
- Heavy metals in environment
- Advanced Fiber Laser Technologies
- Inertial Sensor and Navigation
- Agricultural risk and resilience
- Catalytic Processes in Materials Science
- Heavy Metal Exposure and Toxicity
- Surgical Simulation and Training
- Semiconductor Lasers and Optical Devices
- Advanced Sensor and Control Systems
- Technology Assessment and Management
- Advanced Frequency and Time Standards
- Augmented Reality Applications
- Nanomaterials for catalytic reactions
- Surface Modification and Superhydrophobicity
Institute of Economics
2024
Wuhan University
2022-2024
Southwestern University of Finance and Economics
2023-2024
Beijing Research Institute of Uranium Geology
2024
Macau University of Science and Technology
2023
China Academy of Space Technology
2021-2022
Wuhan Institute of Technology
2021
Maternity and Children's Hospital
2021
National Time Service Center
2013-2019
Chinese Academy of Sciences
2019
Catalytic hydrogenation of CO 2 to value-added fuels and chemicals is great importance carbon neutrality but suffers from an activity–selectivity trade-off, leading limited catalytic performance. Herein, the ZnFeAlO 4 + SAPO-34 composite catalyst was designed, which can simultaneously achieve a conversion 42%, selectivity 50%, C –C = 83%, resulting in yield almost 18%. This superior performance found be presence unconventional electron-deficient tetrahedral Fe sites electron-enriched...
Accurate long-distance ranging is crucial for diverse applications, including satellite formation flying, very-long-baseline interferometry, gravitational-wave observatory, geographical research, etc. The integration of the time-of-flight mesurement with phase interference in dual-comb method enables high-precision a rapid update rate and an extended ambiguity range. Pioneering experiments have demonstrated unprecedented precision ranging, achieving 5 nm @ 60 ms 1.1 m 200 0.5 s 25 m....
Multiple-valued decision diagrams (MDDs) have been widely used in reliability analysis for non-repairable fault-tolerant systems.Typically, multiple-valued are to analyze the static fault tree (SFT) model since basic events SFT nonsequence-dependent.However, a cold standby system belongs dynamic model; traditional MDD cannot be directly applied this system.Hence, novel analytical method based on conditional using combinatorial of systems is proposed.In proposed method, set with specific...
The planetary reducer is a common type of transmission mechanism, which can provide high accuracy and has been widely used, it usually required with reliability characteristics in practice. During the manufacturing usage stages reducers, uncertainties are ubiquitous wear inevitable, affect reducers. In this paper, belief modeling analysis considering multi-uncertainties proposed for Firstly, based on functional principle influence wear, performance margin degradation model established using...
Abstract A fuzzy control method is proposed to address the problem of asynchronous motor position caused by uncertain factors, such as changes in load parameters and external disturbances piston pumps driven servo motors. We simulate three typical inputs random dual-axis synchronization using SIMULINK apply this strategy high-precision pumps. The simulation experimental results show that can make synchronous tracking accuracy better than 0.2%, error converges zero after disturbance. This has...
The key problem of telephone time service by PSTN is how to synchronize user with standard time, in other words, measuring delay transmission the important problem. Now, there are two methods delay, first way transmitting character signal; second through phase-detecting. precision will have a directly influence on system synchronization precision, also, traditional analog modulation/demodulation highly effect but phase error inevitably because caused noise and channel characteristic when...
It is of great significance to ensure public transportation management capabilities by improving urban transport services. One method solve the problems related quality data submitted for funding as well accuracy and transparency supervision review processes; moreover, public-transportation-service systems a viable such problems. With technological advancements application new technologies automatic driving multiple payment, it has gradually become difficult user-data verification systems,...
To eliminate or reduce the noise and interference improve signal quality, a pretreatment method of eLORAN received based on spectral subtraction is proposed, aiming at eliminating reducing in signal. This spectrum estimation method. Firstly estimate power spectrum, then acquire useful by subtract from can be reconstructed combination with phase recovery. The theoretical analysis experimental results show that proposed effectively include in-band high frequency carrier interference. At same...
This study examines the impact of educational level grassroots leaders on vulnerability to poverty among villagers in China, using panel data from National Fixed-Point Survey (NFS) spanning 2003 2012. Our findings demonstrate that an increase proportion village cadres with high school education and above significantly reduces rural households China. We identify two main mechanisms underlying this effect: (1) highly educated enhance health status through improvement sanitation facilities, (2)...
The misty mura defect of OGM products seriously affects the product appearance yield. It was found that is caused by insufficient adhesion photoresist. In this paper, etch and photo process conditions were optimized verified. We extending metal oven time increasing temperature can significantly decrease Mura level. addition, adding anneal (140 °C, 15min) after oven, be completely alleviated without any other problems at same time.
Optical clock networks play important roles in various fields, such as precise navigation, redefinition of "second" unit, and gravitational tests. To establish a global-scale optical network, it is essential to disseminate time frequency with stability $10^{-19}$ over long-distance free-space link. However, attempts were limited dozens kilometers mirror-folded configuration. Here, we take crucial step toward future satellite-based time-frequency disseminations. By developing the key...
Abstract To eliminate the influence of size coupling SAR antenna truss rod on assembly accuracy, this paper defines sequence, part datum, tolerance, operation, and measurement operation model by establishing tolerance analysis dimension chain target. The simulation process deployment mechanism is simulated, plane deviation panel analyzed, contribution sensitivity data each component ring to closed are obtained. results show that in-plane angle error mainly affected length rod. By focusing...
Abstract The concentrations of 21 metal(loid)s were analyzed in 2,050 children and adolescents aged 6–18 years from Liuzhou City, Southwest China. detection rates elements all above 99%. potential contribution demographic dietary habits to urinary metal(loid) levels was analyzed. We found that age an important predictor for most elements, exhibited higher exposure than adolescents, expect Sr ( P < 0.05). Urinary girls 13 elements. Multiple regression models also showed may affect the...
Supercapacitors (SCs) feature high power densities and fast charging/discharging rates but suffer from low energy densities. The introduction of redox species into the electrolytes have been proposed as an effective approach to overcome this challenge. To further improve density such SCs, a mixture two alizarin red S, p-phenylenediamine dissolved in KOH solution is employed anodic electrolyte work. Two flexible capacitor electrodes—holey reduced graphene oxide (hrGO) Ni−Co hydroxide/oxide...
Dual SiOxNy shadow elimination is a common film design used in integrated color display devices. This article studied the influence factor of adhesion on glass. Therefore, issue glass particularly important. The factors affecting mainly include several points: and layer surface properties, treatment, adding transition layer. In view above points, we made lot methods such as shelf life control, pickling treatment SiO2 respectively. Through optimizing process improvement, final issues ratio...