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相关概念视频

Theoretical Foundations of Nursing Practice01:30

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Microsoft Excel offers a suite of functions and tools ideal for statistical analysis, making it accessible to students and researchers. This article outlines fundamental Excel functions pivotal for data analysis.
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In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
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Dynamic Equilibrium02:20

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A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
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相关实验视频

Updated: Jan 30, 2026

A Technical Guide for Performing Spectroscopic Measurements on Metal-Organic Frameworks
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使用队列理论框架进行动态ABAC系统的性能分析.

Gaurav Madkaikar1, Karthikeya S M Yelisetty1, Shamik Sural1

  • 1Indian Institute of Technology, Kharagpur, West Bengal, India.

Computers & security
|January 29, 2026
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概括
此摘要是机器生成的。

本研究使用队列理论建模了动态属性基础访问控制 (ABAC) 系统. 它平衡了访问控制效率与政策更新,最大限度地减少了重建期间的系统停机时间.

关键词:
基于属性的访问控制.增量授权是一种增量授权.政策采矿 政策采矿排队与假期的排队

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科学领域:

  • 计算机科学 计算机科学
  • 信息安全 信息安全
  • 系统工程 系统工程

背景情况:

  • 基于属性的访问控制 (ABAC) 系统依赖于访问决策的策略.
  • 动态 ABAC 系统需要通过辅助列表管理授权变更,从而影响效率.
  • 定期的政策重构是必要的,但在计算上昂贵,并导致系统不可用.

研究的目的:

  • 为了应对平衡访问请求解决方案,动态授权更新和ABAC政策重建的挑战.
  • 调查动态ABAC系统中的性能权衡.

主要方法:

  • 模拟访问调解作为一个M/G/1队列与假期/有限的服务.
  • 分析了队列纪律对性能参数的影响.
  • 进行了广泛的实验来评估系统行为.

主要成果:

  • 排队模型有效地代表了动态ABAC系统中的权衡.
  • 排队纪律显著影响访问解决时间和系统可用性.
  • 实验结果为有效的动态ABAC实施提供了指导.

结论:

  • 排队理论方法为优化动态ABAC系统提供了一个框架.
  • 仔细考虑队列纪律对于表现至关重要.
  • 这些发现促进了更高效和可用的动态ABAC系统.