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Related Concept Videos

Control Volume and System Representations01:16

Control Volume and System Representations

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Two key frameworks are employed to analyze mass, energy, and momentum transfer: the control volume approach and the system approach. These frameworks offer different perspectives, depending on whether the focus is on a specific region in space (control volume approach) or a defined mass of fluid (system approach).
The control volume approach considers a stationary region in space through which fluid flows. This region is bounded by a control surface.  For instance, in the case of water...
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Unsoundness of Aggregate due to Volume Change01:26

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Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
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Laminar and Turbulent Flow01:07

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Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
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Gravity between Spherical Bodies01:27

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Newton's law of gravitation describes the gravitational force between any two point masses. However, for extended spherical objects like the Earth, the Moon, and other planets, the law holds with an assumption that masses of spherical objects are concentrated at their respective centers.
This assumption can be proved easily by showing that the expression for gravitational potential energy between a hollow sphere of mass (M) and a point mass (m) is the same as it would be for a pair of extended...
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Gauss's Law: Problem-Solving01:10

Gauss's Law: Problem-Solving

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Gauss's law helps determine electric fields even though the law is not directly about electric fields but electric flux. In situations with certain symmetries (spherical, cylindrical, or planar) in the charge distribution, the electric field can be deduced based on the knowledge of the electric flux. In these systems, we can find a Gaussian surface S over which the electric field has a constant magnitude. Furthermore, suppose the electric field is parallel (or antiparallel) to the area vector...
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Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
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NLI4VolVis: Natural Language Interaction for Volume Visualization via LLM Multi-Agents and Editable 3D Gaussian

Kuangshi Ai, Kaiyuan Tang, Chaoli Wang

    IEEE Transactions on Visualization and Computer Graphics
    |November 21, 2025
    PubMed
    Summary
    This summary is machine-generated.

    NLI4VolVis allows users to explore and edit 3D volumetric data using natural language commands. This innovative system enhances accessibility and usability for scientific visualization, making complex data exploration more intuitive.

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    Area of Science:

    • Computer Graphics
    • Scientific Visualization
    • Human-Computer Interaction

    Background:

    • Traditional volume visualization (VolVis) methods face limitations in transfer function design and computational cost.
    • Existing novel view synthesis techniques require extensive user expertise and lack semantic interaction capabilities.

    Purpose of the Study:

    • To introduce NLI4VolVis, an interactive system for natural language-based exploration and editing of volumetric scenes.
    • To bridge the gap between complex VolVis tools and non-expert users through intuitive language interaction.

    Main Methods:

    • Integration of multi-view semantic segmentation and vision-language models for scene understanding.
    • Development of a multi-agent large language model architecture with function-calling tools for intent interpretation and task execution.
    • Utilization of 3D editable Gaussians for the VolVis engine, enabling declarative commands and tool interaction.

    Main Results:

    • NLI4VolVis supports open-vocabulary object querying, real-time scene editing, and best-view selection.
    • The system facilitates 2D stylization of volumetric data.
    • Case studies and a user study demonstrate improved accessibility and usability.

    Conclusions:

    • NLI4VolVis significantly enhances the accessibility and usability of volumetric data exploration.
    • Natural language interaction revolutionizes how users engage with and manipulate complex scientific visualization data.