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相关概念视频

Morphogenesis02:19

Morphogenesis

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Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
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Evolutionary Psychology01:20

Evolutionary Psychology

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Evolutionary psychology explores the origins of human behavior and mental processes by framing them within the context of natural selection, a theory famously propounded by Charles Darwin. This field asserts that many behaviors common across human societies — ranging from instinctive fear reactions to complex social interactions — arose as evolutionary adaptations. These adaptations enhanced the survival and reproductive success of our ancestors, thereby becoming embedded in the...
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Modeling and Similitude01:12

Modeling and Similitude

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Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
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Plasticity00:58

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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

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Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
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相关实验视频

Updated: Sep 13, 2025

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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基因多元:通过3D多态演化学习通用化和特塞拉化形状先验.

Bangzhen Liu, Yuyang Yu, Xuemiao Xu

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    |July 31, 2025
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    概括
    此摘要是机器生成的。

    GenPoly是一种新的3D预先模型,通过专注于局部几何学来增强3D生成. 这种方法保留了以前方法中丢失的细节,使得高保真度的形状可以创建.

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    相关实验视频

    Last Updated: Sep 13, 2025

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    Creating Objects and Object Categories for Studying Perception and Perceptual Learning

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    Three-Dimensional Shape Modeling and Analysis of Brain Structures
    05:33

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    Author Spotlight: Enhancing Skin Model Diversity with Cost-Effective 3D Cellular Models
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    科学领域:

    • 计算机视觉 计算机视觉
    • 计算机图形 计算机图形
    • 人工智能的人工智能

    背景情况:

    • 现有的3D模型往往牺牲精细的几何细节,专注于粗的物体分解.
    • 可概括的3D表示对于各种生成任务至关重要,但与复杂的局部变化作斗争.

    研究的目的:

    • 介绍GenPoly,一种用于多个3D生成任务的新型通用3D预先模型.
    • 开发一种方法,保存和结合精细的局部几何细节,用于高准确度的3D形状生成.

    主要方法:

    • 制定3D预先建模作为一个自下而上的多态演化过程.
    • 引入一个多态变异自编码器 (PolyVAE) 具有多功能形状残余代码库,用于编码局部几何.
    • 开发一个3D多态演变方案,以逐步,粗细地精制局部细节.

    主要成果:

    • 基因聚合物有效地保留了复杂的局部几何,克服了以前粗粒度方法的局限性.
    • 拟议的PolyVAE和不断发展的方案可以生成具有丰富细节的视觉吸引力的3D形状.
    • 在下游任务中,GenPoly在最先进的方法中表现出优越的性能,特别是在局部细节保存方面.

    结论:

    • GenPoly通过利用自下而上的局部几何学改进为3D预先建模提供了一个新的范式.
    • 该方法实现了高保真度的3D生成,并保持了优异的细节保存.
    • GenPoly代表了详细和可概括的3D形状合成的重大进步.