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相关概念视频

Introduction to Vertical Curves01:24

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Vertical curves are parabolic transitions that connect different grades on highways and railroads, ensuring a smooth alignment between back and forward tangents. The back tangent represents the initial grade, while the forward tangent defines the subsequent grade. These curves can be symmetrical, with equal tangent lengths, or nonsymmetrical, with varying lengths. The key points defining a vertical curve include the Point of Vertical Intersection (P.V.I.), where the tangents meet; the Point of...
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The first step in describing and analyzing most phenomena in physics involves the careful drawing of a free-body diagram. Free-body diagrams are useful in analyzing forces acting on an object or system, and are employed extensively in the study and application of Newton's laws of motion. The steps to draw a free-body diagram are listed below:
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In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
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Albert Bandura's theory of observational learning identifies four critical processes: attention, retention, motor reproduction, and reinforcement or motivation.
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相关实验视频

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Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
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学习绘制参数面的方法

Nicolas Davidenko1, Jennifer Day2

  • 1Department of Psychology, University of California, 1156 High Street, Social Sciences 2, Santa Cruz, CA, 95064, USA. ndaviden@ucsc.edu.

Memory & cognition
|November 28, 2023
PubMed
概括
此摘要是机器生成的。

由于复杂的过程,从记忆中绘制面孔是很困难的. 使用简化的参数化面部绘图 (PFD) 模型来评估面部回忆的准确性,显示图纸比机会更好.

关键词:
绘制面孔的人.从内存中绘制图纸.面部绘制 面部绘制面对面的空间空间空间空间.参数面是指参数面的面体.

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相关实验视频

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科学领域:

  • 认知心理学 认知心理学
  • 人类的感知 人类的感知
  • 视觉记忆 视觉记忆 视觉记忆

背景情况:

  • 从记忆中准确地绘制面孔是罕见的,可能是因为将3D心理表征翻译为2D图纸的复杂性.
  • 参数化面部绘图 (PFD) 模型简化了面部刺激,以便更容易绘制和评估面部回忆.
  • 以前的研究强调了人类面部记忆和绘画能力的挑战.

研究的目的:

  • 评估参数化面部绘图 (PFD) 模型在评估面部回忆方面的有效性.
  • 为了调查绘图准确性是否会随着练习在绘图复制任务中得到改善.
  • 通过简化刺激来确定参与者是否可以回忆并从记忆中绘制面孔.

主要方法:

  • 实验1涉及参与者 (N=37) 绘制18个目标面部,用笔复制它们,通过标记关键点来测量准确度.
  • 实验2涉及参与者 (N=22) 在短暂的观察期后从记忆中绘制目标面孔.
  • 两项实验都使用了参数化面部绘图 (PFD) 模型来生成简化的面部刺激.

主要成果:

  • 在绘制复制任务 (实验1) 中,绘制准确性比试验略有改善,大部分收益在早期.
  • 在绘制从内存任务 (实验2) 中,没有观察到绘制精度的显著改善,尽管由于样本大小,结果是暂定的.
  • 尽管学习证据有限,但参与者的绘画始终比随机机会更好地捕捉了面部相似性.

结论:

  • 参数化面部绘图 (PFD) 模型为评估面部回忆提供了一种可行的方法,特别适用于非艺术家.
  • 绘图准确性在受控复制任务中的实践显示了一些改进,但从内存绘制仍然具有挑战性.
  • 需要进一步的研究来探索学习效应,并完善基于绘图的记忆评估方法.