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相关概念视频

Design Example: Alignment of a Road Line Using GIS01:17

Design Example: Alignment of a Road Line Using GIS

49
The alignment of a road line using Geographic Information Systems (GIS) is a critical process in civil engineering, combining advanced technology with practical decision-making. This methodology begins with the collection of geospatial data, including information on land cover, geomorphology, drainage patterns, slope, and contour details. Such data is typically acquired through satellite imagery and GIS tools, offering a comprehensive understanding of the terrain.Once the data is gathered, it...
49
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

39
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...
39
Levels of Use of a GIS01:29

Levels of Use of a GIS

52
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...
52
Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

27
Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
27
GIS Software, Hardware, and Sources of GIS Data01:23

GIS Software, Hardware, and Sources of GIS Data

65
A Geographic Information System (GIS) combines specialized software and hardware to effectively manage, analyze, and present spatial and related data. GIS software includes critical functionalities such as a user interface for easy navigation, database management tools for handling spatial and attribute data, and data retrieval features for efficient access. Analytical tools transform raw data into insights, while display functions produce maps and reports in various formats for effective...
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Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

657
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
657

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相关实验视频

Updated: Jul 5, 2025

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function
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在城市中基于矢量的行人导航.

Christian Bongiorno1,2, Yulun Zhou1,3, Marta Kryven4

  • 1Senseable City Lab, Massachusetts Institute of Technology, Cambridge, MA, USA.

Nature computational science
|January 13, 2024
PubMed
概括
此摘要是机器生成的。

随着距离的增加,行人会偏离最短的路线,而路径的方向显著影响选择. 一个新的基于矢量导航模型可以更好地预测城市环境中的人类路径规划.

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科学领域:

  • 城市规划是城市规划.
  • 人类流动性 人类流动性
  • 计算社会科学 计算社会科学

背景情况:

  • 了解城市环境中的行人导航对于城市规划和运输至关重要.
  • 以前的研究依赖于受控实验,缺乏真实世界的移动数据洞察力.

研究的目的:

  • 分析城市街道网络中的人类路径规划,使用现实世界的GPS数据.
  • 为了确定影响行人路线选择的关键因素,超越最短的距离.

主要方法:

  • 对来自美国两个主要城市的GPS跟踪数据集进行统计分析.
  • 开发和测试一种新的基于矢量导航模型 ("最准的路径").

主要成果:

  • 随着出发目的地距离的增加,行人越来越多地偏离最短的路径.
  • 当起点和目的地相反时,路径选择显著不同.
  • "最尖的路径"模型在统计学上优于随机效应的最短路径模型.

结论:

  • 向目标的方向是人类路径规划的主要驱动力.
  • 基于矢量导航似乎是跨不同城市网络的人类路径规划的普遍属性.