Search results for: Kaihua Xu

Items from 1 to 20 out of 47 results

article

LiZn/Li₂O Induced Chemical Confinement Enabling Dendrite‐Free Li‐Metal Anode (Adv. Funct. Mater. 19/2024)

Huaming Qian, Xiangyang Li, Qinchuan Chen, Wen Liu, more

Advanced Functional Materials > 34 > 19 > n/a - n/a

Dendrite‐Free Li‐Metal Anodes In article number 2310143, Xifei Li and co‐workers reveal that the LiZn/Li₂O configuration induced chemical confinement effectively inhibits Li dendrite formation, in which the well‐distributed and interconnected lithiophilic Li₂O phase and electron‐conductive LiZn phase and the favorable localized free electron distribution regulates uniform Li deposition, guaranteeing...

article

LiZn/Li₂O Induced Chemical Confinement Enabling Dendrite‐Free Li‐Metal Anode

Huaming Qian, Xiangyang Li, Qinchuan Chen, Wen Liu, more

Advanced Functional Materials > 34 > 19 > n/a - n/a

Li metal has been considered as a potential anode candidate for next‐generation high‐energy Li‐metal batteries, even though the uncontrollable growth of Li dendrites shortens their cycling lifespan. Herein, a reliable and dendrite‐free Li‐metal anode is fabricated via inducing chemical confinement based on an atomic layer deposited lithiophilic ZnO in situ generating LiZn/Li₂O arrays. In a configuration,...

article

Optimizing the Electron Spin States of Na₄Fe₃(PO₄)₂P₂O₇ Cathodes via Mn/F Dual‐Doping for Enhanced Sodium Storage (Adv. Funct. Mater. 16/2024)

Yukun Xi, Xiaoxue Wang, Hui Wang, Mingjun Wang, more

Advanced Functional Materials > 34 > 16 > n/a - n/a

Sodium Storage In article number 2309701, Xifei Li, Mingjun Wang, and co‐workers report that the electron spin state of Na₄Fe₃(PO₄)₂P₂O₇ cathode can be optimized from low‐spin to medium‐spin via Mn/F dual‐doping, thus decreasing the band gap and increasing the electronic conductivity of the material, which thereby results in superior sodium storage.

article

Optimizing the Electron Spin States of Na₄Fe₃(PO₄)₂P₂O₇ Cathodes via Mn/F Dual‐Doping for Enhanced Sodium Storage

Yukun Xi, Xiaoxue Wang, Hui Wang, Mingjun Wang, more

Advanced Functional Materials > 34 > 16 > n/a - n/a

A NASICON‐type Mn/F dual‐doping Na₄Fe₃(PO₄)₂P₂O₇ cathode material is successfully synthesized via a spray drying method. A medium‐spin of Fe is measured by DFT calculation, X‐ray absorption near edge structure (XANES), temperature‐dependent magnetization susceptibility (M−T) measurement, and electron paramagnetic resonance (EPR) tests. It indicates that the e_g orbital occupation of Fe²⁺ can be finely...

article

VOC Bonding of Heterointerface Boosting Kinetics of Free‐Standing Na₅V₁₂O₃₂ Cathode for Ultralong Lifespan Sodium‐Ion Batteries

Xuexia Song, Xifei Li, Hui Shan, Jingjing Wang, more

Advanced Functional Materials > 34 > 5 > n/a - n/a

The flexible free‐standing cathodes with high energy density have been challenging toward wearable sodium‐ion batteries (SIBs). Herein, Na₅V₁₂O₃₂ nanobelts (NVO‐NBs)‐based heterostructure is fabricated with boosting the sodium‐ion kinetic characteristics to address the challenges. In the heterostructure, the controllable VOC bonds are generated at the interface originating from the chemical conversion...

chapter

A Clustering Algorithm Based on Power for WSNs

Kaihua Xu, Ya Wang, Yuhua Liu

Lecture Notes in Computer Science > Computational Science – ICCS 2007 > 153-156

This paper computes the optimum number of cluster heads based on power first, and then proposes the clustering algorithm for WSNs, at last estimates its performances by our emulator. On analysis, clustering time complexity is dependent on the network diameter and it is suitable for small or medium networks. The simulation results show that using this clustering algorithm can generate network topology...

chapter

A Novel Embedded Intelligent In-Vehicle Transportation Monitoring System Based on i.MX21

Kaihua Xu, Mi Chen, Yuhua Liu

Lecture Notes in Computer Science > Advanced Intelligent Computing Theories and Applications. With Aspects of Theoretical and Methodological Issues > Intelligent Computing in Communication > 628-635

In this paper, we introduces a novel intelligent vehicle transportation monitoring system (NIVTS) based on i.MX21 designed and realized by us, it overcomes drawbacks of traditional vehicle monitoring and it has characteristics of multi-functions, real time. It uses many technologies fusing GPS, GPRS, WebGIS, RS, and is composed mainly by two parts: the Mobile Terminal and Monitoring Center. Especially,...

chapter

Research of Undirected Network Capacity Expansion Based on the Spanning-Tree

Yuhua Liu, Kaihua Xu, Hao Huang, Wei Teng

Lecture Notes in Computer Science > Simulated Evolution and Learning > Evolutionary Optimisation > 228-235

This paper gives a mathematical description of the undirected network capacity definitions and theorems of computing capacities towards the network. Prove of the theorem correctness is also given. According to them, the paper proposes an algorithm of computing the undirected network capacities based on spanning tree and even an advanced optimization algorithm. In addition, it discusses network capacity...

article

Structure and properties of secondary cobalt powder

Xiaoli Xi, Zuoren Nie, Kaihua Xu, Liwen Ma, more

International Journal of Refractory Metals and Hard Materials > 2013 > 41 > Complete > 90-93

Cobalt is widely used in batteries, carbide, and many other industries due to its good performance. Secondary cobalt powder is an important source of cobalt. The performance of secondary cobalt and ore cobalt are studied in this paper. Secondary cobalt carbonate and ore cobalt carbonate possess monoclinic structures, but the secondary cobalt carbonate XRD diffraction peak half-width is more than twice...

chapter

An Effective Self-adaptive Load Balancing Algorithm for Peer-to-Peer Networks

Naixue Xiong, Kaihua Xu, Lilong Chen, Laurence T. Yang, more

2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops & PhD Forum > 1425 - 1432

2012 26th IEEE International Parallel and Distributed Processing Symposium Workshops (IPDPSW)

The field of parallel and distributed computing has become increasingly significant as recent advances in electronic and integrated circuit technologies. Peer-to-Peer (P2P) cloud computing networks are the largest contributor of network traffic on the Internet. Measurement plays an important role in different P2P applications, we should enhance the measurement-based optimization of P2P networking...

chapter

Research on the cascading failure of scale-free networks based-on the coupling coefficient

Yuhua Liu, Meirong Zheng, Kaihua Xu, Wenwen Dai

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet) > 2807 - 2810

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet)

The paper researches the issues of cascading failure when scale-free networks based-on the coupling coefficient experience the random attacks and intentional attacks. Based on the Node Dynamic Model, follow the principle of that the load on the collapse nodes must be re-distributing locally and preferred, compared the global cascading failure phenomenon under the two attack strategies of the extended...

chapter

An Efficient Search Algorithm without Memory for Peer-to-Peer Cloud Computing Networks

Naixue Xiong, Yuhua Liu, Shishun Wu, Laurence T. Yang, more

2011 IEEE International Symposium on Parallel and Distributed Processing Workshops and Phd Forum > 1452 - 1457

2011 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum (IPDPSW)

In recent years, as the rapid development of the technology about Peer-to-Peer (P2P) networks and the cloud computing technology, various applications of P2P technology become very widespread in most cloud computing distributed network applications. P2P cloud computing networks are unstructured and are an important component to implement next generation internet. How to quickly and efficiently search...

chapter

The study of control of carbon content in fly ash in ultra-supercritical opposed boiler basing on non-linear method

Jianchen Hu, Kaihua Xu, Dingping Liu

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet) > 1848 - 1851

2011 International Conference on Consumer Electronics, Communications and Networks (CECNet)

High carbon content in fly ash seriously affects boiler's economical operation. Due to supercritical boiler's high thermal capacity, the inertia of thermal parameter reflecting combustion is bigger. It is especially important to well control carbon content in fly ash during operation. In this article, based on the analyzing influence factors to the carbon content in Fly Ash, the Least Square Support...

chapter

An Effective Method to Improve the Resistance to Frangibility in Scale-Free Networks

Kaihua Xu, Yongwei Meng, Yuhua Liu, Naixue Xiong, more

2010 13th IEEE International Conference on Computational Science and Engineering > 214 - 221

2010 IEEE 13th International Conference on Computational Science and Engineering (CSE 2010)

The scale-free networks reveals the essential characteristics of networks, which can be used to describe many realistic networks, which has a common features: The minority vertices have massive connections, the number of which may reach as high as several million, but the majority vertices only have few connections, which is one of characteristics of scale-free networks. So the scale-free networks...

chapter

A reliable clustering algorithm base on LEACH protocol in wireless mobile sensor networks

Yuhua Liu, Zhenrong Luo, Kaihua Xu, Lilong Chen

2010 International Conference on Mechanical and Electrical Technology > 692 - 696

2010 2nd International Conference on Mechanical and Electrical Technology (ICMET)

Wireless sensor network which is composed of a large number of low-cost, low-power, multifunctional sensor nodes deployed in a remote environment to monitor and analyze the data collected in the physical world in a timely manner. Based on the feature of nodes with limited energy, people have done some deep research on the prolongation of the lifetime in the WSN. In this paper, we focus on reducing...

chapter

Implementation of handheld remote sense image calibration system software

Kaihua Xu, Jian Chen, Rui Wang, Yuhua Liu

2010 2nd International Conference on Future Computer and Communication > 2 > V2-664 - V2-668

2010 2nd International Conference on Future Computer and Communication (ICFCC 2010)

This paper based on 4S(GPS, GPRS, GIS and RS technology in a integrated system) and designed a remote sense image calibration system by using a high precise GPS module which is integrated in the handheld client device. This article designed and realized a software architecture and a data storage and transfer model though the GPRS real-time network. The handheld devices based on 4S changed the poor...

chapter

The topology optimization of controlling Hubs in P2P networks

Shishun Wu, Kaihua Xu, Yuhua Liu

2010 2nd International Conference on Future Computer and Communication > 3 > V3-778 - V3-782

2010 2nd International Conference on Future Computer and Communication (ICFCC 2010)

With the improvement of the P2P network traffic proportion accounted for the total flow, P2P networks actually had become an important component of next generation Internet. In P2P network, the existence of Hubs lead to the reducing of the ability of anti-coordinated attack in entire system, and it makes the system become awfully fragile. In this paper, aims to the current phenomenon of the Hubs in...

chapter

Modeling of scale-free network based on pagerank algorithm

Yi Zhang, Kaihua Xu, Yuhua Liu, Zhenrong Luo

2010 2nd International Conference on Future Computer and Communication > 3 > V3-783 - V3-786

2010 2nd International Conference on Future Computer and Communication (ICFCC 2010)

BA scale-free network model ignores the appraisal which the node obtains in the network evolution. In the real system, new nodes tend to connect the nodes have been highly recognized. Therefore the paper presents a scale-free network model based on pagerank algorithm. The simulation experiment has showed the network dynamic generation process and obtained the degree distribution of BA model and new...

chapter

Application Modes, Architecture and Challenges for Cloud Educational System

Yuhua Liu, Lilong Chen, Kaihua Xu, Yi Zhang

2010 Second International Conference on Computer Research and Development > 331 - 334

Second International Conference on Computer Research and Development (ICCRD 2010)

Cloud computing has been brought to the classroom in some place. This paper first analyzes possible application modes for CES(cloud educational system):Centralized, Distributed and Hybrid, then proposes general architecture for CES. At last, various challenges and viable solutions are discussed.

chapter

The resource locating strategy based on sub-domain hybrid P2P network model

Yuhua Liu, Yuling Li, Laurence T Yang, Naixue Xiong, more

2010 IEEE International Symposium on Parallel&Distributed Processing, Workshops and Phd Forum (IPDPSW) > 1 - 8

2010 IEEE International Symposium on Parallel & Distributed Processing, Workshops and Phd Forum (IPDPSW 2010)

P2P networks are important parts of the next generation Internet and P2P file sharing has become one of the most important internet application systems in the world. But P2P network faces a challenge in locating resource: the unstructured P2P network has complex search functions, but the efficiency of resource locating is low. However, it is efficient to locate resources in structure P2P network,...

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INFONA - science communication portal

Search results for: Kaihua Xu

LiZn/Li₂O Induced Chemical Confinement Enabling Dendrite‐Free Li‐Metal Anode (Adv. Funct. Mater. 19/2024)

LiZn/Li₂O Induced Chemical Confinement Enabling Dendrite‐Free Li‐Metal Anode

Optimizing the Electron Spin States of Na₄Fe₃(PO₄)₂P₂O₇ Cathodes via Mn/F Dual‐Doping for Enhanced Sodium Storage (Adv. Funct. Mater. 16/2024)

Optimizing the Electron Spin States of Na₄Fe₃(PO₄)₂P₂O₇ Cathodes via Mn/F Dual‐Doping for Enhanced Sodium Storage

VOC Bonding of Heterointerface Boosting Kinetics of Free‐Standing Na₅V₁₂O₃₂ Cathode for Ultralong Lifespan Sodium‐Ion Batteries

A Clustering Algorithm Based on Power for WSNs

A Novel Embedded Intelligent In-Vehicle Transportation Monitoring System Based on i.MX21

Research of Undirected Network Capacity Expansion Based on the Spanning-Tree

Structure and properties of secondary cobalt powder

An Effective Self-adaptive Load Balancing Algorithm for Peer-to-Peer Networks

Research on the cascading failure of scale-free networks based-on the coupling coefficient

An Efficient Search Algorithm without Memory for Peer-to-Peer Cloud Computing Networks

The study of control of carbon content in fly ash in ultra-supercritical opposed boiler basing on non-linear method

An Effective Method to Improve the Resistance to Frangibility in Scale-Free Networks

A reliable clustering algorithm base on LEACH protocol in wireless mobile sensor networks

Implementation of handheld remote sense image calibration system software

The topology optimization of controlling Hubs in P2P networks

Modeling of scale-free network based on pagerank algorithm

Application Modes, Architecture and Challenges for Cloud Educational System

The resource locating strategy based on sub-domain hybrid P2P network model

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