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相关概念视频

Distribution Reliability and Automation01:25

Distribution Reliability and Automation

162
Distribution reliability in electrical power systems is critical for ensuring an uninterrupted power supply to consumers at minimal cost. According to IEEE Standard Terms, reliability is the probability that a device will function without failure over a specified time period or amount of usage. For electric power distribution, this translates to maintaining continuous power supply and addressing customer concerns over power outages. Several indices, as defined by IEEE Standard 1366-2012, are...
162
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

738
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
738
Orders of Magnitude01:15

Orders of Magnitude

21.5K
The order of magnitude of a number is the power of 10 that most closely approximates it. Thus, the order of magnitude estimates the scale (or size) of its value. To find the order of magnitude of a number, take the base-10 logarithm of the number and round it to the nearest integer. Then the order of magnitude of the number is simply the resulting power of 10.
The order of magnitude is simply a way of rounding numbers consistently to the nearest power of 10. This makes doing rough mental math...
21.5K
Response Surface Methodology01:16

Response Surface Methodology

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Response Surface Methodology (RSM) is a collection of statistical and mathematical techniques used to develop, improve, and optimize processes. It is particularly valuable when many input variables or factors potentially influence a response variable.
The process of RSM involves several key steps:
267
Transformers in Distribution System01:27

Transformers in Distribution System

159
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
159
Distributed Loads01:19

Distributed Loads

613
Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
613

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相关实验视频

Updated: Sep 13, 2025

Operation of the Collaborative Composite Manufacturing CCM System
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Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

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订单履行规划与众包集成集成的计划.

Xuejing Cao1, Zhongmin Da2, Xuefei Wang3

  • 1School of Business, Shaoxing University, Shaoxing, 312000, China.

Scientific reports
|July 27, 2025
PubMed
概括

这项研究引入了电子商务交付的新模式,即两级多仓库众包分发交付订单履行问题. 它使用众包代理和分发交付来降低物流成本并提高灵活性.

科学领域:

  • 运营研究 运营研究
  • 物流管理物流管理
  • 电子商务优化 电子商务优化

背景情况:

  • 电子商务的快速增长带来了重要的最后一英里交付挑战.
  • 城市物流越来越多地利用众包来提供灵活的交付解决方案.
  • 传统的配送模式与现代在线零售的规模和需求作斗争.

研究的目的:

  • 正式定义两级多仓库众包分发交货订单履行问题 (2E-MDCSDOFP).
  • 开发一个高效的算法来解决这个复杂的物流问题.
  • 评估众包分发交付所提供的成本效益和灵活性改进.

主要方法:

  • 整数编程公式,以最大限度地降低总物流成本.
  • 开发一个自适应的大社区搜索 (ALNS) 算法.
  • 对基准场景进行了广泛的实验验证.

主要成果:

  • 拟议的2E-MDCSDOFP模型有效地整合了众包和分发交付.
  • ALNS算法在解决大规模实例方面表现出了高效率.
  • 与传统方法相比,在交付灵活性和成本效益方面观察到显著的改善.
关键词:
适应性大型邻里搜索众包服务 (crowdsourcing) 是一种众包服务.电子商务是电子商务.订单的履行 订单的履行分分送货,分分送货.

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Spotlighting Customers' Visual Attention at the Stock, Shelf and Store Levels with the 3S Model

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相关实验视频

Last Updated: Sep 13, 2025

Operation of the Collaborative Composite Manufacturing CCM System
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Operation of the Collaborative Composite Manufacturing CCM System

Published on: October 1, 2019

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Automated Robotic Liquid Handling Assembly of Modular DNA Devices
11:22

Automated Robotic Liquid Handling Assembly of Modular DNA Devices

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Spotlighting Customers' Visual Attention at the Stock, Shelf and Store Levels with the 3S Model

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结论:

  • 众包和分发交付提供了一种有价值的方法来增强现代分销系统.
  • 开发的模型和算法为复杂的电子商务履行提供了强大的解决方案.
  • 这项研究突出了更高效和更适应性的城市物流的途径.