Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation01:24

One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation

1.2K
This lesson introduces two critical methods in pharmacokinetics, the Wagner-Nelson and Loo-Riegelman methods, used for estimating the absorption rate constant (ka) for drugs administered via non-intravenous routes. The Wagner-Nelson method relates ka to the plasma concentration derived from the slope of a semilog percent unabsorbed time plot. However, it is limited to drugs with one-compartment kinetics and can be impacted by factors like gastrointestinal motility or enzymatic degradation.
On...
1.2K
Analysis Methods of Pharmacokinetic Data: Model and Model-Independent Approaches01:14

Analysis Methods of Pharmacokinetic Data: Model and Model-Independent Approaches

548
Drug disposition in the body is a complex process and can be studied using two major approaches: the model and the model-independent approaches.
The model approach uses mathematical models to describe changes in drug concentration over time. Pharmacokinetic models help characterize drug behavior in patients, predict drug concentration in the body fluids, calculate optimum dosage regimens, and evaluate the risk of toxicity. However, ensuring that the model fits the experimental data accurately...
548
Pulse amplitude and quality01:17

Pulse amplitude and quality

3.2K
Pulse amplitude is a crucial indicator of cardiac health because it provides valuable insights into the strength of left ventricular contractions and the overall uniformity of blood circulation within the vasculature. The strength of the pulse is directly related to the force with which the heart contracts and the volume of blood being pumped.
A weak or absent pulse may indicate reduced cardiac output or poor left ventricular contraction, which can be signs of cardiovascular dysfunction or...
3.2K
What are Estimates?01:06

What are Estimates?

8.9K
It isn't easy to measure a parameter such as the mean height or the mean weight of a population. So, we draw samples from the population and calculate the mean height or mean weight of the individuals in the sample. This sample data acts as a representative measure of the population parameter. These sample statistics are known as estimates. 
The estimate for the mean of a sample is denoted by ͞x, whereas the mean of the population is designated as μ. Further, parameters such...
8.9K
Trigonometric Substitution01:23

Trigonometric Substitution

77
Trigonometric substitution is a technique used to simplify integrals that contain square root expressions involving quadratic forms. It is particularly effective when the integrand includes terms resembling those found in standard geometric equations, such as circles or ellipses.Molniya satellites follow highly elliptical orbits, repeatedly sweeping out the same regions of space as they revolve around Earth. To estimate the area enclosed by such an orbit, the path is modeled as an ellipse...
77
Rationalizing Substitutions01:29

Rationalizing Substitutions

62
Integrals involving non-rational functions are often difficult to evaluate using standard techniques, especially when radicals appear in the integrand. Rationalizing substitution provides a systematic method for simplifying such integrals by converting them into rational forms that are easier to handle.Consider a rod whose linear mass density depends on a constant linear density, a characteristic length, and the distance from the left end of the rod. Determining the total mass requires...
62

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Development and external validation of a mixed-reality aneurysm clipping simulator.

Neurosurgical review·2025
Same author

A MAUDE database analysis on the new generation of active bone conduction hearing implants.

Laryngoscope investigative otolaryngology·2024
Same author

Changes in management of head and neck malignancies during the COVID-19 pandemic.

Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale·2024
Same author

Early Results With the New Active Bone-Conduction Hearing Implant: A Systematic Review and Meta-Analysis.

Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery·2024
Same author

Impact of the COVID-19 pandemic on management of surgically treated laryngeal squamous cell carcinoma.

Biomolecules & biomedicine·2023
Same author

Experience With the New Active Transcutaneous Bone-Conduction Implant With Smaller Dimensions.

Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery·2023

関連する実験動画

Updated: Feb 13, 2026

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
06:18

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery

Published on: December 6, 2024

1.1K

有限振幅挿入置換法を用いたB/A推定のためのモデルベースのアプローチ.

Andreas Schrempf1, Lisa Stefely1, Thomas Thurner1

  • 1Research Group for Surgical Simulators Linz, University of Applied Sciences Upper Austria, Linz 4020, Austria.

The Journal of the Acoustical Society of America
|February 12, 2026
PubMed
まとめ

この研究は,有限幅挿入置換法 (FAIS) を用いて音響非線形性パラメータB/Aを推定するための改善された枠組みを導入しています. 新しいモデルは,波の効果と衰弱を考慮することで,精度と頑丈性を向上させます.

さらに関連する動画

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
10:50

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

Published on: April 8, 2020

10.2K
Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
09:20

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

7.1K

関連する実験動画

Last Updated: Feb 13, 2026

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
06:18

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery

Published on: December 6, 2024

1.1K
A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth
10:50

A Finite Element Approach for Locating the Center of Resistance of Maxillary Teeth

Published on: April 8, 2020

10.2K
Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
09:20

Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction

Published on: February 13, 2021

7.1K

科学分野:

  • アコースティクス アコースティクス
  • 非線形音学 非線形音学とは
  • 材料の特性について

背景:

  • 音響非線形性パラメータ (B/A) の正確な推定は,材料科学にとって極めて重要です.
  • 従来の有限振幅挿入置換 (FAIS) 方法は,平面波の伝播のような仮定のために制限があります.

研究 の 目的:

  • 送信モードでFAIS方法を用いてB/A推定のための強化されたモデルベースのフレームワークを開発する.
  • 既存の技術の限界に対処することによって,B/A測定の精度と堅実性を向上させる.

主な方法:

  • 平面波の仮定を排除するフレームワークを開発し,トランスデューサー difraktion と波の重置のための形状関数を組み込みました.
  • さまざまな衰弱指数を扱うために,第2ハーモニック衰弱の修正項が含まれています.
  • 繰り返しと直接のB/A推定方法の両方をサポートしています.

主要な成果:

  • 強化されたフレームワークは,従来のFAIS方法と比較して,B/A推定の正確性と信頼性を大幅に改善します.
  • 実験セットアップやトランスデューサーの幾何学に対する感度が低下する.
  • シミュレーションと実験的な測定で検証された.

結論:

  • 提案された枠組みは,音響非線形性パラメータB/A.を特徴付けるためのより正確で信頼性の高い方法を提供します.
  • B/A測定のための実験パラメータを最適化するための実用的なガイドラインを提供します.