A5101962019- Indoor and Outdoor Localization Technologies
- Advanced Wireless Network Optimization
- Energy Efficient Wireless Sensor Networks
- Advanced MIMO Systems Optimization
- Wireless Communication Networks Research
- IoT and Edge/Fog Computing
- Wireless Networks and Protocols
- Energy Harvesting in Wireless Networks
- Underwater Vehicles and Communication Systems
- Mobile Ad Hoc Networks
- Opportunistic and Delay-Tolerant Networks
- Vehicular Ad Hoc Networks (VANETs)
- Cooperative Communication and Network Coding
- Recommender Systems and Techniques
- UAV Applications and Optimization
- Advancements in Battery Materials
- Topological and Geometric Data Analysis
- Software-Defined Networks and 5G
- Bluetooth and Wireless Communication Technologies
- Advanced Battery Materials and Technologies
- Age of Information Optimization
- Electrocatalysts for Energy Conversion
- Robotics and Sensor-Based Localization
- Smart Grid Security and Resilience
- Optical Wireless Communication Technologies
Southeast University
2015-2024
Shanghai Jiao Tong University
2024
Shanghai Children's Hospital
2024
Southeast University
2011-2022
Nanjing University of Information Science and Technology
2020-2021
Northwestern Polytechnical University
2020
Institute of Soil Science
2020
Chinese Academy of Sciences
2020
Bengbu University
2020
Bengbu Medical College
2020
Exploring nonprecious metal electrocatalysts to replace the noble metal-based catalysts for full water electrocatalysis is still an ongoing challenge. In this work, porous structured ternary nickel-iron-phosphide (Ni-Fe-P) nanocubes were synthesized through one-step phosphidation of a Ni-Fe-based Prussian blue analogue. The Ni-Fe-P exhibit rough and loose structure on their surface under suitable phosphating temperature, which favorable mass transfer oxygen diffusion during process. As...
In this paper, we propose a distributed joint computation offloading and resource allocation optimization (JCORAO) scheme in heterogeneous networks with mobile edge computing. An problem is formulated to provide the optimal strategy policy, uplink subchannel allocation, transmission power scheduling. The decomposed into two sub-problems due NP-hard property. order analyze strategy, sub-algorithm named potential game built. existence of Nash equilibrium proved. To jointly allocate subchannel,...
Three-dimensional nitrogen doped hierarchical porous carbons are synthesized by NaCl-assisted pyrolysis exfoliation of a ZIF-8 polyhedron with enhanced ORR electrocatalytic activities.
Different heteroatom incorporated NiFe-based nanocubes are synthesized with MOFs as precursors and exhibit enhanced OER activities.
Vehicular Ad-hoc Network (VANET) is a new application of Mobile (MANET) in the field Inter-vehicle communication. As high mobility vehicles, some traditional MANET routing protocols may not fit VANET. In this paper, we propose cluster-based directional protocol (CBDRP) for highway scenarios, which header cluster selects another according to moving direction vehicle forward packets. Simulation results shows CBDRP can solve problem link stability VANET, realizing reliable and rapid data transmission.
An ordered structure and multiple components in combination promote enhanced activity stability of Pt-based catalysts toward the FAOR.
Black phosphorus (BP) has drawn growing attention as the anode material for lithium-ion batteries (LIBs) because of its high theoretical lithium storage capacity. However, electrochemical processes and fundamental failure mechanisms have not been completely understood due to lack direct evidence. Here, we report visualization lithiation/delithiation behavior BP in nano-LIBs using situ transmission electron microscopy technique. Upon lithiation, is found undergo obvious anisotropic size...
Atomically thin black phosphorus (called phosphorene) holds great promise as an alternative to graphene and other two-dimensional transition-metal dichalcogenides anode material for lithium-ion batteries (LIBs). However, bulk (BP) suffers from rapid capacity fading poor rechargeable performance. This work reports the first time use of in situ transmission electron microscopy (TEM) construct nanoscale phosphorene LIBs. enables direct visualization mechanisms underlying thick multilayer...
The formation of hollow-structured oxide nanoparticles is primarily governed by the Kirkendall effect. However, degree complexity oxidation process multiplies in bimetallic system because incorporation more than one element. Spatially dependent kinetics controls final morphology hollow nanoparticles, and highly on elemental composition. Currently, a theoretical framework that can predict how different metal elements result morphologies remains elusive. In this work, utilizing combination...
The α-MoO3 nanobelt has great potential for application as anode of lithium ion batteries (LIBs) because its high capacity and unique one-dimensional layer structure. However, fundmental electrochemical failure mechanism during first lithiation/delithiation process is still unclear. Here, we constructed an setup within inside a transmission electron microscope to observe in situ the mircostructure evolution cycles. Upon lithiation, converted into numerous Mo nanograins Li2O matrix, with...
For alkali metal ion batteries, probing the storage mechanism (intercalation‐ or conversion‐type) and concomitant phase evolution during sodiation–desodiation cycling is critical to gain insights into understanding how electrode functions thus it can be improved. Here, by using in situ transmission electron microscopy, whole process of spinel NiCo 2 O 4 nanorods tracked real time. Upon first sodiation, a two‐step conversion reaction has been revealed: converted intermediate phases CoO NiO...
In vehicular networks, Mobile Edge Computing (MEC) is applied to meet the offloading demand from vehicles. However, mobility of vehicles may increase delay and even reduce success rate offloading, because access another road side unit (RSU) before finishing offloading. Therefore, an algorithm with low time complexity required make decision quickly. this paper, we put forward efficient based on Support Vector Machine (SVMO) satisfy fast in networks. The can segment a huge task into several...
This study proposes an analytical model and effective scheme for the periodic broadcast on control channel in vehicular ad hoc networks (VANETs). An improved Markov analysing performance of VANETs is established. Compared with traditional two‐dimensional chain models, improvement our proposed achieved by considerations unsaturated traffic conditions deterministic message generation at each node, modelled a discrete‐time D/M/1 queue mechanism freezing backoff‐time counter. In adapting to...
In this paper, we propose a game theoretic approach for joint offloading and resource allocation optimization (JORAO) problem in mobile edge computing (MEC) system. This study not only investigates strategy, but also considers cloud wireless allocation. Specially, the concern of JORAO is to minimize energy consumption monetary cost from terminals' perspective. However, non-convex NP hard. Therefore, it formulated as game. The existence Nash equilibrium (NE) proved it. To obtain NE,...
This paper presents an optimal roadside unit (RSU) placement method for vehicle localization in Vehicle Ad-hoc Networks (VANETs). Since the RSU layout can significantly affect performance of algorithms, proposed needs to find K-coverage placement, ensure best accuracy while using minimum number RSUs. We adopt Geometric Dilution Precision (GDOP) metric evaluate provided by placements, and derive expression GDOP towards received signal strength (RSS) hybrid parameter estimators, respectively....
To identify NLOS propagations for a high-resolution wireless localization system, strong classifier is proposed via machine learning algorithm named AdaBoost. Signal features are extracted to characterize the distinctions between LOS and NLOS, based on which series of weak learners primarily given. By training re-sampling data iteratively, with minimal classification error selected weighted sum boosted into classifier. Simulations demonstrate that AdaBoost-based can improve identification...
Cation exchange (CE) has been recognized as a particularly powerful tool for the synthesis of heterogeneous nanocrystals. At present, CE can be divided into two categories, namely ion solvation-driven reaction and thermally activated reaction. Here we report an electrically driven to prepare individual nanostructures inside transmission electron microscope. During process, Cd is eliminated due Ohmic heating, whereas Cu+ migrates crystal by electrical field force. Contrast experiments reveal...
The problem of joint radio and cloud resources allocation is studied for heterogeneous mobile computing networks. objective the proposed resource schemes to maximize total utility users as well satisfy required quality service (QoS) such end-to-end response latency experienced by each user. We formulate a combinatorial optimization problem. Three evolutionary approaches are considered solve problem: genetic algorithm (GA), ant colony with (ACO-GA), quantum (QGA). To decrease time complexity,...
This paper presents a single-site positioning method based on the joint estimation of propagation time-of-arrival (TOA) and direction-of-arrival (DOA), with assist virtual stations in typical non-line-of-sight (NLOS) environment. Consider influence multipath noise performance, proposed firstly modified high-resolution technique called Multipath Limiting Matrix Pencil (MLMP) algorithm to achieve TOA/DOA estimations, which matrix pencil enhancement process are implemented deal measurements...
Low earth orbit (LEO) satellite networks can provide global coverage, low-latency services to users. The are multi-hop networks, and the dynamic characteristics of bring great challenges design efficient routing algorithms. In this paper, we proposed an improved algorithm based on inter-satellite link(ISL) state information it is on-board autonomous control. divided into three phases, namely topology establishment phase, calculation phase link failure response phase. Satellites make...
High throughput performance of the Wireless Access in Vehicular Environment (WAVE) system can provide more capacity for future high density traffic, which is little considered ongoing IEEE 802.11p/P1609.4 defined WAVE Medium Control (MAC) protocol. To achieve this goal, we propose a novel multi-channel MAC protocol that use dynamic time boundary instead fixed to separate Channel (CCH) Interval and Service (SCH) Interval. In our scheme, CCH further split into Announcement Phrase (SAP), Beacon...