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相关概念视频

The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
Kendall's Tau Test01:16

Kendall's Tau Test

Kendall's tau test, also known as the Kendall rank coefficient test, is a nonparametric method for assessing association between two variables. This test is particularly useful for identifying significant correlations when the distributions of the sample and population are unknown. Developed in 1938 by the British statistician Sir Maurice George Kendall, the tau coefficient (denoted as τ) serves as a rank correlation coefficient, with values ranging from -1 to +1.
A τ value of +1 indicates that...
Multimachine Stability01:25

Multimachine Stability

Multimachine stability analysis is crucial for understanding the dynamics and stability of power systems with multiple synchronous machines. The objective is to solve the swing equations for a network of M machines connected to an N-bus power system.
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
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

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...
The Buckingham Pi Theorem01:09

The Buckingham Pi Theorem

The Buckingham Pi theorem provides a structured method to simplify fluid dynamics problems by reducing complex systems of variables to dimensionless terms.

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相关实验视频

Updated: May 11, 2026

Mapping Molecular Diffusion in the Plasma Membrane by Multiple-Target Tracing MTT
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Mapping Molecular Diffusion in the Plasma Membrane by Multiple-Target Tracing MTT

Published on: May 27, 2012

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TTK正在为MPI做好准备.

Eve Le Guillou, Michael Will, Pierre Guillou

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    概括
    此摘要是机器生成的。

    拓工具包 (TTK) 现在支持使用消息传递接口 (MPI) 的分布式内存并行性,使大数据集上的多功能拓分析管道成为可能. 这种扩展为复杂的科学工作流提供了高效的并行化.

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    Automated Sample Multiplexing by using Combined Precursor Isotopic Labeling and Isobaric Tagging cPILOT
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    Author Spotlight: Introducing the Tile/SED/Array Interface for Rapid Field of View Positioning in Tissue Imaging
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    相关实验视频

    Last Updated: May 11, 2026

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    Automated Sample Multiplexing by using Combined Precursor Isotopic Labeling and Isobaric Tagging cPILOT
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    Author Spotlight: Introducing the Tile/SED/Array Interface for Rapid Field of View Positioning in Tissue Imaging
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    科学领域:

    • 科学可视化科学可视化
    • 计算拓学的计算拓学
    • 高性能计算 高性能计算

    背景情况:

    • 对于分布式内存环境的现有基于拓的方法通常使用定制的单个算法实现.
    • 需要多功能框架,并行支持复杂的拓分析管道.

    研究的目的:

    • 用消息传递接口 (MPI) 将拓工具包 (TTK) 扩展到分布式内存并行性的技术基础.
    • 为拓分析管道引入一种多功能方法,支持三角化域和正规网格.

    主要方法:

    • 扩展TTK的数据结构,用于三角形表示和横跨,以支持MPI.
    • 在全球管道和细粒度算法层面开发TTK和MPI之间的中间接口.
    • 基于通信需求的分布式内存拓算法的分类以及混合MPI+线程并行化的例子.

    主要成果:

    • 对分布式内存拓分析管道的多功能方法的演示.
    • 性能分析显示,从20%到80%的平行效率与MPI特定预先调节的微不足道的开销.
    • 成功地将扩展的TTK应用于1536核心集群上的1200亿顶点数据集.

    结论:

    • TTK 扩展为分布式内存环境中的大规模拓分析提供了一个强大的和多功能框架.
    • 开发的方法解决了平行拓计算中的算法和软件工程挑战.
    • 为未来开发TTK的MPI扩展提供了路线图和建议.