A5101740301- Advancements in PLL and VCO Technologies
- Radio Frequency Integrated Circuit Design
- Advanced MIMO Systems Optimization
- Cooperative Communication and Network Coding
- Advancements in Battery Materials
- Analog and Mixed-Signal Circuit Design
- Advanced Battery Technologies Research
- Land Use and Ecosystem Services
- HVDC Systems and Fault Protection
- Fault Detection and Control Systems
- Advanced Memory and Neural Computing
- Social Acceptance of Renewable Energy
- Urban Green Space and Health
- Millimeter-Wave Propagation and Modeling
- Advanced Neural Network Applications
- Luminescence and Fluorescent Materials
- Integrated Energy Systems Optimization
- Urban Heat Island Mitigation
- Tropical and Extratropical Cyclones Research
- Semiconductor Lasers and Optical Devices
- Semiconductor materials and devices
- Embedded Systems and FPGA Design
- Neural Networks and Reservoir Computing
- Economic Zones and Regional Development
- Advanced DC-DC Converters
University of Macau
2024-2025
Aerospace Information Research Institute
2025
Chinese Academy of Sciences
2023-2025
City University of Macau
2024-2025
Peking University
2025
Xiangtan University
2024
Shanghai University of Electric Power
2024
Changsha Normal University
2024
Hunan Normal University
2024
Wuhan University of Technology
2024
The carbon stock in terrestrial ecosystems is closely linked to changes land use. Understanding how use alterations affect regional stocks essential for maintaining the balance of ecosystems. This research leverages and driving factor data spanning from 2000 2020, utilizing Patch-generating Land Use Simulation (PLUS) model alongside InVEST ecosystem services examine temporal spatial storage across Beijing. Additionally, four future scenes 2030—urban development, natural cropland protection,...
Sodium-ion batteries (SIBs) are potential candidates for large energy storage usage because of the natural abundance and cheap sodium. Nevertheless, improving density cycling steadiness SIB cathodes remains a challenge. In this work, F-doping Na
Accurate weather forecasts are important for disaster prevention, agricultural planning, and water resource management. Traditional numerical prediction (NWP) methods offer physically interpretable high-accuracy predictions but computationally expensive fail to fully leverage rapidly growing historical data. In recent years, deep learning have made significant progress in forecasting, challenges remain, such as balancing global regional high-resolution forecasts, excessive smoothing extreme...
Abstract In a pulsed plasma thruster, the voltage distribution between electrodes is key factor that influences ionization process. However, few researchers have conducted in-depth studies on this phenomenon in past. Reported here are measurements of plates parallel-plate thruster under different discharge voltages, based which variations total circuit inductance and resistance as well those calculated. The results show time-averaged across accounts for 28.7%–50.4% capacitor voltage. As...
The frequency divider (FD) is one of the key components in very-high-frequency (VHF) PLLs. Conventionally, injection-locked (ILFD) , Miller divider, and CML static are widely used various applications. Among these dividers, ILFD has highest operation frequency, but locking range limited. On other hand, FD covers a wide range, its low power consumption usually high. Since connected to VCO operates at dissipation VHF should be carefully considered. In PLL, due process temperature variations,...
Abstract Accurately assessing cyclone intensity changes due to global warming is crucial for predicting and mitigating sequential hazards. This study develops a high-resolution, fully coupled air–sea model investigate the impact of on Supertyphoon Mangkhut (2018). A numerical sensitivity analysis conducted using pseudo–global (PGW) technique based multiple climate models (GCMs) from phase 6 Coupled Model Intercomparison Project (CMIP6). Under ocean scenarios, increasing average sea surface...
Due to the poor real-time performance of water quality monitoring, secondary pollution, high cost and other issues, this paper proposes use wireless sensor network technology design a monitoring system. The system has strong real-time, online functions, acquires multiple parameter data that affect quality, timely accurately monitor information, prevent environmental reduce impact meet requirements efficient intelligent quality.
To effectively solve the problem of environmental pollution, Chinese government has implemented an supervision system since 2002. The mainly uses four functions supervision, investigation, coordination, and emergency response to strengthen protection law enforcement, respond emergencies, coordinate cross-regional pollution disputes. As important design for China control promote ecological transformation economic development, policy effect deserves attention. This paper...
In this paper, a 64.3–66.2GHz digitally calibrated phase-locked loop (PLL) is presented in 0.13μm CMOS technology. A digital calibration circuit adopted to align the center operation frequency between VCO and divider. At 64.3GHz, measured phase noise at 1MHz offset 84.1dBc/Hz. The PLL consumes 72mW without output buffers from 1.2V supply.
Deep learning has been used in a wide range of areas and made huge breakthrough. With the ever-increasing model size train-ing data volume, distributed deep emerges which utilizes cluster to train parallel. Unfortunately, performance is often far from linear speedup due communication overhead between nodes. To address this challenge, paper designs implements Libra, network aggregator, that in-network computation optimize for DL training two aspects: 1) reduce active connections 2) aggregate...
A 50.8-53-GHz clock generator with a quadruplicate-harmonic-locked phase detector (PD) is presented to achieve low spur and reference frequency. The proposed PD, low-voltage Colpitts voltage-controlled oscillator, wide-range divide-by-2 divider are also presented. This has been fabricated in 0.13-mum process. measured -59.88 dBc at 51.02 GHz an input frequency of 199.3 MHz. area 0.93 mm times 1 the on-chip loop filter pads. It dissipates 87 mW without buffers from 1.5-V supply.
The locking range of the CML divide-by-two divider with inductive shunt peaking is analyzed. dividers using locking-range-enhanced techniques have been realized in 0.13μm CMOS process. Experimental results show that proposed improved 30.8% and 62.5% by adopting current-reused g <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">m</inf> -boosted technique, respectively. When both are adopted, 101.67% larger than conventional one at same power...
Input-parallel output-series (IPOS) power system is widely used in high output voltage and high-power applications. To improve the reliability redundancy of IPOS system, it necessary to adopt a distributed autonomous control strategy without centralized controller. This article investigates an for dc system. The principle characteristics are studied detail. In particular, limitations balance performance accuracy analyzed. overcome limitations, with power-ripple-based low bandwidth...
Recent years have witnessed substantial advancements in the field of 3D reconstruction from 2D images, particularly following introduction neural radiance (NeRF) technique. However, reconstructing a high dynamic range (HDR) field, which aligns more closely with real-world conditions, multi-exposure low (LDR) images continues to pose significant challenges. Approaches this issue fall into two categories: grid-based and implicit-based. Implicit methods, using multi-layer perceptrons (MLP),...
With the large-scale development of wind power resources, installed capacity offshore increases rapidly. Due to climate and other factors, typhoon disasters occur frequently. Considering that speed is influenced by typhoon, output highly uncertain. Besides, may lead physical failure transmission equipment endanger reliable operation system. Therefore, it necessary assess reliability system connected farms affected typhoon. The model proposed in this paper adopts hierarchical structure...