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関連する概念動画

Path Between Thermodynamics States01:21

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Consider the two thermodynamic processes involving an ideal gas that are represented by paths AC and ABC in Figure 1:
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Work and Energy for Variable Forces01:10

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When an object is acted upon by a variable force, the amount of work done and the change in energy of the object can be more complex to calculate compared to when a constant force is applied. Work is the product of force and displacement, while energy is the capacity of a system to do work. When a constant force is applied to an object, the work done can be calculated as the product of the force and the distance moved in the direction of the force. However, when a variable force is applied, the...
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Work-Energy Theorem for Motion Along a Curve01:09

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The work-energy theorem can be generalized to the motion of a particle along any curved path. The simple argument here is that the curved path can be considered a sum of many infinitesimal paths, each of which is a straight path. The force on the particle can be considered constant along any such infinitesimal path so that the work-energy theorem can be applied along it. So, it is also valid for the sum of these paths. The net work done is the integral of the work done along the infinitesimal...
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Principle of Virtual Work: Problem Solving01:13

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The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
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Positive, Negative, and Zero Work00:58

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Work is done on an object when energy is transferred to the object. In other words, work is done when a force acts on a body that undergoes a displacement from one position to another. By definition, the work done by a force is the integral of the force with respect to the displacement along its path. Forces can vary as a function of position, and displacements can occur along various paths between two points. The magnitude of a force multiplied by the cosine of the angle that the force makes...
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Virtual Work for a System of Connected Rigid Bodies01:06

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Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
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A Web Tool for Generating High Quality Machine-readable Biological Pathways
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最低限の作業の経路を決定する:簡単な例

Ron Elber1,2

  • 1The Oden Institute for Computational Engineering and Sciences, University of Texas at Austin, Austin TX, 78712.

Molecular physics
|September 4, 2025
PubMed
まとめ
この要約は機械生成です。

効率的な無料エネルギー計算のための最小限の作業経路 (MWP) を探すためのグリッド検索方法を開発しました. このアプローチは,分子シミュレーションのアプリケーションで,複雑な景観のサンプリングに役立ちます.

キーワード:
自由エネルギー分子力学モンテカルロ最低の作業経路仕事をする

さらに関連する動画

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科学分野:

  • コンピュータ化学
  • 統計的メカニズム
  • 物理化学

背景:

  • 効率的な無料エネルギー計算には,最小限の作業経路 (MWP) が不可欠です.
  • MWPはCandidate Monte Carlo Movesのような高度なサンプリング方法の設計に不可欠です.
  • 複雑なエネルギー環境の効率的なサンプリングは 分子シミュレーションの継続的な課題です

研究 の 目的:

  • 最低限の作業経路 (MWP) を特定するための新しいグリッド検索アプローチを提示する.
  • MWPのグリッド検索メソッドの適用性を様々なシステムで実証する.
  • 異なる潜在エネルギー環境における MWPの行動と特性を分析する.

主な方法:

  • MWPのパラメータ空間を体系的に探索するためのグリッド検索アルゴリズムの実装.
  • MWPを特定するための二次元モデルランドスケープへの方法の適用
  • レーナード・ジョーンズ球の変異過程でMWPを研究する方法.

主要な成果:

  • 固定された短い時間帯で二次元景観の例で最小限の作業経路 (MWP) を成功裏に特定します.
  • レナード・ジョーンズ変異の例で,単一で明確なMWPがない最小の作業経路の広大なファネルの観察.
  • 異なる景観の複雑性を持つシステムでMWPを見つけるためのグリッド検索アプローチの検証

結論:

  • 格子検索アプローチは,最小限の作業経路 (MWP) を計算するための実行可能な方法を提供します.
  • 明確なMWPが存在するか否かは,エネルギー環境の特性に左右されます.
  • この方法は,複雑な潜在エネルギー表面を横断するシステムの動態に関する洞察を提供します.