Results 31 to 40 of about 12,042 (177)

FCM认知算法在软件定义网络中的应用研究

open access: yesGuangtongxin yanjiu, 2020
针对网络控制平面可能被迫设置较低信道比特率和改进调制格式的问题,文章提出了一种基于模糊C均值(FCM)的认知算法,在软件定义光网络(SDON)中进行学习和决策制定。首先,将FCM算法加入到SDON控制平面,以实现比非认知性控制平面更好的网络性能;然后,利用FCM算法,根据光信道传输质量,实时和自主地确定高速灵活速率的转发器的调制格式;最后,通过长距离传输网络的计算模拟,对FCM算法的性能进行了评价,并将其与SDON中常用的基于案例的推理(CBR)算法进行了比较。结果表明,与CBR算法相比 ...
何红, 赵佐
doaj  

基于集中式与分布式的信息物理融合微电网电压频率二次恢复控制仿真研究 [PDF]

open access: yes全球能源互联网, 2019
随着分布式清洁能源的普及,通信技术在协调各个分布式电源的控制中显得尤为重要。在电力信息传输的过程中,不同的网络状态下表现出不同的通信特性,严重的甚至会发生信息错乱丢包等行为,这对电网的实时控制产生严重影响。为研究信息系统对电力物理系统的实时影响,搭建了电力信息物理融合仿真平台,运用RT-LAB与OPNET两款实时仿真器,通过TCP/IP进行数据交互,对微电网电压、频率的集中式恢复与分布式恢复问题展开研究。仿真结果表明,该平台能有效地反映通信网络对电网控制的影响 ...
张文浩   +4 more
doaj   +1 more source

Authoritarianism and the Emergence of Parallel State Dynamics: Evidence From the Syrian Earthquake

open access: yesDigest of Middle East Studies, Volume 34, Issue 1, Winter 2025.
ABSTRACT This article investigates the Syrian regime's strategic manipulation of the February 2023 earthquake to reaffirm its authority and maintain legitimacy. The regime's response to the disaster is analyzed to understand how authoritarian states leverage natural disasters for political gains. It argues that the Assad regime's survival is not merely
Rahaf Aldoughli
wiley   +1 more source

平行交通:虚实互动的智能交通管理与控制

open access: yes智能科学与技术学报, 2019
概述了平行交通系统的概念、框架、方法与应用。平行交通系统能够针对具体任务和特定场景构建对应的软件定义的人工交通系统,在此基础上,利用计算实验方法进行实验、分析、评估、预测、学习与优化,并借助平行执行实现对实际交通系统的管理与控制,实现虚实互动的平行智能。平行交通管理与控制是ACP理论的拓展应用,主要强调虚实互动的平行智能产生方式在城市交通管理与控制中的应用,以提高城市交通管理与控制的智能化水平。
吕宜生   +5 more
doaj  

Blame and obligation: The importance of libertarianism and political orientation in the public assessment of disinformation in the United States

open access: yesPolicy &Internet, Volume 16, Issue 4, Page 801-817, December 2024.
Abstract Disinformation concerns have heightened the importance of regulating content and speech in digital communication environments. Perceived risks have led to widespread public support for stricter control measures, even at the expense of individual speech rights.
Adrian Rauchfleisch, Andreas Jungherr
wiley   +1 more source

基于粒子群算法的压水堆控制系统设定值决策研究

open access: yesHe jishu
随着数字控制技术的发展,核电机组中基于模拟量的传统仪控系统逐步被全数字化技术代替,采用更复杂高效的先进控制技术成为了可能。目前虽然已有采用先进控制算法提升压水堆电厂控制系统性能的研究,但大多只关注控制系统本身而未能充分考虑多个控制系统之间的耦合。为了从顶层协调多个控制系统提升整体控制性能,本文提出了基于粒子群优化的压水堆控制系统设定值决策方法,构建了设定值优化所需的决策目标函数及决策优化运行约束条件,建立的智能决策系统基于压水堆实际运行过程进行设定值离线优化,根据运行工况进行在线智能决策 ...
张 琦   +3 more
doaj   +1 more source

Elections, coalitions, and the politics of Brazil's macroeconomic stabilization

open access: yesPolitics &Policy, Volume 52, Issue 6, Page 1227-1245, December 2024.
Abstract After several failed attempts in previous years, Brazil's Plano Real finally ended hyperinflation in 1993–1994, and a significant driver of inequality and poverty was eliminated as a result. By combining data from Congress and newspaper archives, 17 interviews, and secondary sources, this article takes a qualitative approach to explore the ...
Daniel H. Alves
wiley   +1 more source

自动交换光网络控制平面功能结构的探讨

open access: yesGuangtongxin yanjiu, 2003
文章主要讨论了自动交换光网络(ASON)控制平面的两种不同结构:控制平面在网元外部的结构和控制平面部分集成在网元内部的结构,并对这两种结构进行了比较.
李文耀, 李志刚
doaj  

Expert assessment of illegal collecting impacts on Venus flytraps and priorities for research on illegal trade

open access: yesConservation Biology, Volume 38, Issue 5, October 2024.
Abstract Illegal collecting of wild Venus flytraps (Dionaea muscipula) for the horticultural trade represents a persistent threat to populations of the species across their endemic range in the coastal plain of North and South Carolina (United States). Although wild collecting of Venus flytraps is not a novel threat, there has been very little research
Jared D. Margulies   +10 more
wiley   +1 more source

一种ASON中控制平面管理接口的实现方案

open access: yesGuangtongxin yanjiu, 2004
文章提出了一种自动交换光网络(ASON)控制平面管理接口的实现方案.我们首先对接口功能需求进行了分析,然后提出了控制平面的管理信息模型,并对接口信息进行了分类,最后介绍了接口中的信息交互流程.从而为实现对控制平面的管理提供了理论指导.
宋鸿升   +4 more
doaj  

Home - About - Disclaimer - Privacy