Results 31 to 40 of about 2,466 (152)

《高压电器》“GIS/GIL用环氧复合绝缘件研究”专题征稿启事

open access: yesDianci bileiqi, 2017
SF6气体绝缘金属全封闭开关设备、管道母线等(GIS、GIL)广泛用于超、特高压输电系统和大中城市的配电系统中,已成为建设智能电网的首选设备。其中,环氧复合材料绝缘件(如环氧复合盆式或支柱绝缘子、绝缘拉杆等)是GIS/GIL等设备的重要组成部分,也是制约设备绝缘水平的核心部件,其性能决定了GIS/GIL等设备的经济性,也成为制约超特高压GIS/GIL等设备可靠性的关键部件 ...
doaj   +6 more sources

STBM: secure and trustworthy blockchain-based model for cybersecurity service transactions [PDF]

open access: yes
To overcome the numerous challenges faced by traditional models of cybersecurity service transactions, adapt to the needs of industrial digitalization, and address the inconveniences and opacity of cybersecurity service transactions, a secure and ...
PIAO Guirong, ZHU Jianming
core   +1 more source

Distributed anonymous authentication scheme based on the blockchain in VANET [PDF]

open access: yes, 2022
Identity authentication is the first line of defense against malicious vehicles spreading false traffic information.However, due to the limited network bandwidth and computing power in the vehicle ad-hoc network (VANET), the existing schemes cannot meet ...
Kaiping CUI   +3 more
core   +1 more source

基于DDPG的智能反射面辅助无线携能通信系统性能优化

open access: yes物联网学报
针对智能反射面(IRS, intelligent reflecting surface)辅助的多输入单输出(MISO, multiple input single-output)无线携能通信(SWIPT, simultaneous wireless information and power transfer)系统,考虑基站最大发射功率、IRS反射相移矩阵的单位膜约束和能量接收器的最小能量约束,以最大化信息传输速率为目标,联合优化了基站处的波束成形向量和智能反射面的反射波束成形向量。为解决非凸优化问题 ...
基于DDPG的智能反射面辅助无线携能通信系统性能优化
doaj   +1 more source

Resource Substitution: Local Governments' Issue Attention and Policy Reinvention

open access: yesPolicy Studies Journal, EarlyView.
ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley   +1 more source

Manipulating Terminal Bonds of Ti3C2Tx MXene for Highly Efficient Microwave Absorption and Photothermal Conversion

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT MXenes have been widely investigated as microwave absorption (MA) materials because of their unique properties. This study introduces a terminal bond manipulation strategy to enhance charge transfer and polarization in Ti3C2Tx, optimizing its MA performance.
Xiang Fang   +8 more
wiley   +1 more source

Role-based abstract modeling of blockchain auction contracts and verification of temporal security and fairness [PDF]

open access: yes
To enhance the efficiency of time security verification and fairness verification of auction contracts, an abstract modeling and verification method for role-based auction contracts was proposed.
CHENG Zhuo   +5 more
core   +1 more source

Ciphertext policy hidden access control scheme based on blockchain and supporting data sharing [PDF]

open access: yes, 2022
Objectives: Although the traditional attribute-based encryption scheme achieves one-to-many access control,there are still challenges such as single point of failure,low efficiency,no support for data sharing,and privacy leakage.To solve these problems,a
Pengliang SHI, Ruizhong DU, Tianhe ZHANG
core   +1 more source

Amphiphilic Block Copolymer‐Functionalized VO2 Nanocomposites for Smart Waterborne Polyurethane Coatings

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Aqueous vanadium dioxide (VO2)‐based smart thermal insulation coatings represent a viable strategy to decrease building energy consumption and advance sustainable development goals. However, the inherent instability and limited compatibility with polymer matrices of VO2 hinder its widespread application.
Xiuxian Zhao   +9 more
wiley   +1 more source

去中心化金融的交易机制综述

open access: yes大数据, 2022
去中心化金融(DeFi)是一种基于区块链和智能合约提供金融服务的新范式,现已涉及包括借贷及其衍生品在内的众多领域。因此,作为DeFi基础的交易机制成为重要的关注点,其直接影响着上层应用的稳定性。主要讨论DeFi领域的交易机制,首先介绍与交易机制相关的概念和协议;然后通过实现方式对交易机制进行分类,分别详细讨论了基于交易委托账本、自动做市商和聚合器方法的交易机制实现,并比较归纳实现方案之间的区别与联系;最后分析并总结了去中心化交易面临的公平性、安全性、匿名性问题,提出了相关的未来研究方向。
邓钇敏, 司世景, 王健宗, 李泽远, 肖京
doaj   +1 more source

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