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相关概念视频

Electron Microscope Tomography and Single-particle Reconstruction01:07

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Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
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相关实验视频

Updated: Jul 10, 2025

Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects
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Author Spotlight: Insights into the Analysis of Human Interaction with 3D Virtual Objects

Published on: October 18, 2024

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视觉化3D对象的截面:使用物体响应理论开发高效的测量方法.

Mitchell E Munns1, Chuanxiuyue He1, Alexis Topete1

  • 1Department of Psychological & Brain Sciences, University of California, Santa Barbara, CA 93106, USA.

Journal of Intelligence
|November 24, 2023
PubMed
概括
此摘要是机器生成的。

开发新的基于计算机的空间测试对于STEM教育至关重要. 这项研究创造了高效,可靠的测试可视化3D对象的截面,显示没有性别或种族偏见.

关键词:
在STEM教育方面,一个横截面的截面.项目响应理论是物品响应理论.工作人员的选择人员的选择.空间能力 空间能力

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科学领域:

  • 心理学 心理学 心理学
  • 在STEM教育方面.
  • 教育测量教育的测量

背景情况:

  • 空间能力对于STEM成功至关重要,但目前的测试缺乏现代心理测量验证.
  • 现有的空间测试可能在STEM应用中不具有上下文相关性或在心理测量上不合理.

研究的目的:

  • 提出和说明一种开发有效,可靠和高效的基于计算机的空间技能测试的方法.
  • 开发和验证一个高效的测试可视化三维物体的截面.

主要方法:

  • 开发和试点测试基于计算机的空间测试.
  • 在线管理三个空间测量对498名参与者 (18-20岁).
  • 心理测量分析,包括项目级统计数据,以改进测试并创建组合测量.

主要成果:

  • 两个开发的测试,圣巴巴拉固体和参考平面,展示了良好的心理测量特性,并测量了域一般的截面能力.
  • 一个精细的,综合测量显示,在控制数学教育,语言能力和年龄时,性别或种族没有显著的影响.
  • 基于地质的横截面测试太难了,可能是由于混领域知识.

结论:

  • 开发的基于计算机的测试为空间可视化技能提供了有效,可靠和高效的测量方法.
  • 为在STEM领域的选择和培训中使用这些测试提供了建议.
  • 这项研究强调了需要具有上下文相关性和心理测量学上健全的空间能力评估.