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相关概念视频

Time-Series Graph00:54

Time-Series Graph

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A time-series graph is a line graph with repeated measurements taken at successive intervals of time. It is also called a time series chart. To construct a time-series graph, one must look at both pieces of a paired data set. The horizontal axis is used to plot the time increments, and the vertical axis is used to plot the values of the variable that one is measuring. By using the axes in this way, each point on the graph will correspond to time and a measured quantity. The points on the graph...
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Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

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A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
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Relationship Formation02:12

Relationship Formation

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What do you think is the single most influential factor in determining with whom you become friends and whom you form romantic relationships? You might be surprised to learn that the answer is simple: the people with whom you have the most contact. This most important factor is proximity. You are more likely to be friends with people you have regular contact with. For example, there are decades of research that shows that you are more likely to become friends with people who live in your dorm,...
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Noncompartmental Analysis: Mean Residence Time01:05

Noncompartmental Analysis: Mean Residence Time

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According to statistical moment theory, mean residence time (MRT) is an important measure in pharmacokinetics. MRT can be defined as the expected mean of a probability density function distribution. It provides valuable insights into drug disposition in the body.
After the administration of a drug through intravenous bolus injection, the drug molecules are distributed throughout the body and remain there for varying periods. The MRT represents the average time these drug molecules stay in the...
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Applications of Life Tables01:22

Applications of Life Tables

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Life tables are versatile across various fields, providing a quantitative basis for analyzing mortality and survival rates. Whether used by demographers, actuaries, epidemiologists, or sociologists, life tables offer valuable insights into the dynamics of life and death, facilitating informed decisions in public health, insurance, conservation, and beyond. Their broad applicability highlights the interconnectedness of demographic data with practical outcomes in everyday life and strategic...
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Longitudinal Studies01:26

Longitudinal Studies

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Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
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相关实验视频

Updated: May 27, 2025

Conditions Affecting Social Space in Drosophila melanogaster
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Conditions Affecting Social Space in Drosophila melanogaster

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在时间网络中测量社会流动性

Matthew Russell Barnes1, Vincenzo Nicosia2, Richard G Clegg3

  • 1School of Electronic Engineering and Computer Science, Queen Mary University of London, London, UK. matthew.barnes@qmul.ac.uk.

Scientific reports
|February 18, 2025
PubMed
概括

复杂的网络往往表现出"变富变富"的效应. 我们引入了层次移动性来衡量节点的成功如何随着时间的推移而变化,揭示了网络动态.

关键词:
层次结构 层次结构流动性 流动性 流动性排名 排名 排名 排名 排名随时间演变的网络.

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科学领域:

  • 网络科学 网络科学
  • 复杂系统分析 复杂系统分析
  • 时间网络动力学

背景情况:

  • 这是一个很棒的节目,这是一个很棒的节目.
  • 富有-变得更富有-变得更富有
  • 这种高度连接的节点获得更多连接的现象在复杂网络中很常见.
  • 静态网络分析经常忽视节点程度演变的时间方面.
  • 现有的模型,如偏好的依恋和富人俱乐部效应,分析静态快照.

研究的目的:

  • 在复杂网络中引入和定义节点成功传播的时间尺度.
  • 开发一种"层次移动"概念,以跟踪节点度变化的变化,随着时间的推移获得倾向.
  • 为网络分析创建时间相关统计 (流动性,慈善事业,社区) 的分类.

主要方法:

  • 根据跨时间段的节点度变化定义和计算"层次移动性".
  • 引入时间相关统计:流动性,慈善事业和社区.
  • 将这些统计数据应用于26个现实世界的时间网络和人工网络模型.

主要成果:

  • 大多数分析的网络都显示出各个节点及其邻近的稳定等级位置随着时间的推移.
  • 在单个节点的成功与邻近的成功之间观察到较低的相关效应.
  • 移动性分类学有效地区分来自不同科学领域的网络.

结论:

  • 测量层次移动性为时间网络的基础结构动态提供了有价值的见解.
  • "富人变得更富"效应的相反,需要在网络中的程度不平等.
  • 对网络演变的时间分析提供了比静态快照更细致的理解.