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Short-distance Transport of Resources02:12

Short-distance Transport of Resources

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Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
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Updated: Jan 25, 2026

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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在交叉点的时空资源的综合优化,以尽量减少使用遗传算法的延迟.

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概括
此摘要是机器生成的。

本研究介绍了交叉路口时空资源的综合优化 (IOSTRI) 用于交通信号控制. 开发的模型和遗传算法有效地最大限度地减少了交通延误,适应各种流动模式进行实时控制.

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科学领域:

  • 交通工程是交通工程.
  • 运营研究 运营研究
  • 计算机科学 计算机科学

背景情况:

  • 交叉路口时空资源的综合优化 (IOSTRI) 对于高效的交通信号控制至关重要.
  • 当前的方法通常会单独优化车道分配和信号控制,从而限制整体性能.

研究的目的:

  • 开发一个统一的框架,同时优化车道分配和信号控制计划.
  • 通过在十字路口的时空资源管理的综合方法,尽量减少交通延误.

主要方法:

  • 作为二进制混合整数非线性程序 (BMINLP) 模型,IOSTRI问题的表述.
  • 开发一个定制的基因算法,用于车道和信号规划转换,流量和延迟计算的专用模块.
  • 在优化模型中整合共享车道使用和车道调整.

主要成果:

  • 拟议的BMINLP模型和遗传算法有效地解决了IOSTRI问题.
  • 这种方法证明了适应多样化的流量分布的适应性.
  • 为了最大限度地减少交通延误,在40-55秒内实现了高质量的解决方案.

结论:

  • 综合优化框架显著改善了以前的交通信号控制方法.
  • 开发的模型和算法满足了对单个交叉点实时自适应控制的需求.