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相关概念视频

The Availability Heuristic01:08

The Availability Heuristic

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A heuristic is a general problem-solving framework (Tversky & Kahneman, 1974). You can think of these as mental shortcuts that are used to solve problems. Different types of heuristics are used in different types of situations, and the impulse to use a heuristic occurs when one of five conditions is met (Pratkanis, 1989):
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Levels of Use of a GIS01:29

Levels of Use of a GIS

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Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
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What is a Mode?01:07

What is a Mode?

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The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times.
A data set with two modes is called bimodal. For example,...
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Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

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Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
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Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

38
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
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Multicompartment Models: Overview01:14

Multicompartment Models: Overview

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Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
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相关实验视频

Updated: Jul 2, 2025

Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time
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Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time

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多模式空间可用性:考虑多种模式的单一受限制的可访问性衡量标准.

Anastasia Soukhov1, Javier Tarriño-Ortiz2, Julio A Soria-Lara2

  • 1Department of Earth, Environment and Society, McMaster University, Hamilton, Canada.

PloS one
|February 23, 2024
PubMed
概括

这项研究引入了一项新的可访问性措施,即多式联运空间可用性,以准确计算机会. 这种方法可以防止过度计数,并为各种旅行行为和政策提供可解释的结果.

科学领域:

  • 城市规划 城市规划
  • 运输 地理 交通 地理
  • 空间分析 空间分析

背景情况:

  • 传统的可访问性措施往往过度考虑机会,导致模两可的结果.
  • 机会的总数是一个已知的数量,可以用来限制可访问性计算.
  • 空间可用性是一个单一的限制措施,它解决了过度计数的问题.

研究的目的:

  • 为多式联运场景和异质人群扩展空间可用性测量.
  • 开发一个更可解释,更准确的基于地点的可访问性指标.
  • 评估这种增强措施在现实世界城市规划环境中的应用.

主要方法:

  • 多模式空间可用性测量指标的推导.
  • 使用合成数据集说明该措施的特征.
  • 在西班牙马德里的低排放区实证案例研究中的应用.西班牙马德里.

主要成果:

  • 多式联运空间可用性测量提供单个受限制的可访问性值,其总和为机会的总数.
  • 该措施有效地处理跨多种模式的各种旅行行为.
  • 对马德里低排放区的应用证明了其在政策评估中的实际实用性.

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Using Informational Connectivity to Measure the Synchronous Emergence of fMRI Multi-voxel Information Across Time
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结论:

  • 多模式空间可用性为基于位置的可访问性提供了更准确,更易于解释的方法.
  • 该方法对评估城市政策,如低排放区有重大影响.
  • 未来的研究应该探索这种可访问性框架的进一步应用和改进.