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関連する概念動画

Lumber Defects01:23

Lumber Defects

562
Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
562
Vector Representation of Complex Numbers01:16

Vector Representation of Complex Numbers

560
Complex numbers, represented in Cartesian coordinates, can also be visualized as vectors. These vectors can be expressed in polar form, emphasizing their magnitude and angle. When a complex number is input into a function, the output is another complex number, highlighting the function's zero point from which the vector representation can originate.
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the...
560
Self-Awareness and Its Effects01:21

Self-Awareness and Its Effects

318
Self-awareness is a psychological state in which the individual becomes the focal point of their attention. This inward focus transforms the self into an object of contemplation and assessment, influencing how individuals perceive their actions and their alignment with personal and societal standards.Triggers and Contexts for Self-AwarenessSelf-awareness can be activated by external stimuli that make individuals visually or audibly aware of themselves, such as mirrors, cameras, or recordings.
318
Altered States of Awareness01:06

Altered States of Awareness

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Altered states of consciousness represent significant deviations from one's normal mental state. These deviations can range from subtle changes in awareness to profound transformations in perception, thought processes, and sensory experiences. Altered states of consciousness can be triggered by various factors, including drug use, meditation, hypnosis, illness, or even intense fatigue.
The ingestion of substances like stimulants or hallucinogens leads to chemical alterations in the brain...
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Subconsciousness and No Awareness01:15

Subconsciousness and No Awareness

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The concept of subconscious awareness refers to the processing of information below the level of conscious thought, which significantly influences both behaviors and decisions. It is also known as waking subconscious awareness. This complex level of cognition operates without the direct awareness of the individual, facilitating rapid and simultaneous handling of multiple information streams.
An illustrative example of subconscious processing is its role in problem-solving. Often, individuals...
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Assembly of Complex Microtubule Structures01:32

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Complex microtubule structures are present in resting cells and in dividing cells. In resting cells, they are responsible for maintaining the cellular architecture, tracks for intracellular transport, positioning of organelles, assembly of cilia and flagella. They mediate the bipolar spindle assembly for chromosomal segregation and positioning of the cell division plate in dividing cells. The formation of microtubule complex structures depends on the cell type, cell stage, and cell function.
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関連する実験動画

Updated: Feb 13, 2026

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化学特性工学と欠陥認識構造指紋2D材料における複雑な欠陥の表現について

Cheewawut Na Talang1, Aniwat Kesorn1, Chanaprom Cholsuk2,3

  • 1Optical and Quantum Physics Laboratory, Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.

Journal of chemical information and modeling
|February 12, 2026
PubMed
まとめ

2D素材の欠陥をより良く表現するための新しい化学的,構造的特徴を開発しました. このアプローチは,欠陥形成エネルギーを予測するためのモデルの解釈性と一般化を向上させ,ディープラーニングの効率的な代替案を提供します.

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Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
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Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
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科学分野:

  • 材料科学 材料科学とは
  • コンピューティング・マテリアル・サイエンス・サイエンス
  • 凝縮物質物理学 凝縮物質物理学

背景:

  • 2D材料の複数の欠陥に対する効果的な記述子の設計は,多様な原子環境のために複雑です.
  • 既存の方法は,類似の欠陥組成を区別するのに苦労し,解釈性が欠けているか,または広範なデータを必要とする.

研究 の 目的:

  • 2D素材における欠陥表現のための改良された化学記述子と構造特性を設計する.
  • デフェクトプロパティの予測のためのモデルの解釈性,一般化,および計算効率を高めるために.

主な方法:

  • 最近隣分布 (Classical Force-Field-Inspired Descriptors - CFID) から設計された化学記述子と構築された構造的特徴.
  • データポイントの差別化を改善するためにヘリンガー距離を使用した欠陥認識構造特性を組み込みました.
  • 2D材料の欠陥に対する形成エネルギーとHOMO-LUMOギャップの予測に関するモデルのパフォーマンスを評価しました.

主要な成果:

  • エンジニアリングされた機能は,データポイントの差別を50%向上させ,形成エネルギー予測のためのモデル解釈と汎用性を向上させました.
  • このモデルは,大量のhBNの欠陥に関する外部データセットにおいて,優れた安定性と低い不確実性を示した.
  • HOMO-LUMOギャップのような複雑なターゲットを予測することは,ベースラインの記述子よりも改善なし,挑戦的であり続けました.

結論:

  • 物理情報に基づいたアプローチは,2D素材の欠陥分析のためのディープラーニングの解釈可能で計算効率の高い代替手段を提供します.
  • この方法は,安定した欠陥候補の高通量スクリーニングを支援し,高価な第一原理計算の必要性を削減します.