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Language01:16

Language

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Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in...
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Real Time RT-PCR02:57

Real Time RT-PCR

65.4K
Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
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Controller Configurations01:22

Controller Configurations

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Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
391
Electron Configurations02:46

Electron Configurations

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Electron configurations and orbital diagrams can be determined by applying the Aufbau principle (each added electron occupies the subshell of lowest energy available), Pauli exclusion principle (no two electrons can have the same set of four quantum numbers), and Hund’s rule of maximum multiplicity (whenever possible, electrons retain unpaired spins in degenerate orbitals).
The relative energies of the subshells determine the order in which atomic orbitals are filled (1s, 2s, 2p, 3s, 3p,...
26.6K
Electron Configuration of Multielectron Atoms03:26

Electron Configuration of Multielectron Atoms

65.3K
The alkali metal sodium (atomic number 11) has one more electron than the neon atom. This electron must go into the lowest-energy subshell available, the 3s orbital, giving a 1s22s22p63s1 configuration. The electrons occupying the outermost shell orbital(s) (highest value of n) are called valence electrons, and those occupying the inner shell orbitals are called core electrons. Since the core electron shells correspond to noble gas electron configurations, we can abbreviate electron...
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Sign Convention01:30

Sign Convention

3.6K
When analyzing a beam subjected to various loads, it is crucial to understand the internal forces and moments generated within the structure. These internal forces can be broadly classified into normal forces, shear forces, and bending moments. To determine these forces and moments, we use the method of sections and apply a specific sign convention based on their direction and the side of the section being analyzed.
The normal force acts perpendicular to the beam's cross-section and can...
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相关实验视频

Updated: Feb 14, 2026

Robotized Testing of Camera Positions to Determine Ideal Configuration for Stereo 3D Visualization of Open-Heart Surgery
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一种基于3D摄像机的方法,用于实时识别意大利手语的手部配置.

Luca Ulrich1, Asia De Luca2, Riccardo Miraglia2

  • 1Management and Production Engineering, Politecnico di Torino, C.so Duca degli Abruzzi, 24, 10129 Torino, Italy.

Sensors (Basel, Switzerland)
|February 13, 2026
PubMed
概括
此摘要是机器生成的。

在意大利手语 (LIS) 中识别手形对于沟通至关重要. 这项研究使用RGB-D传感和3D功能来改进手的配置识别,增强LIS分析系统.

关键词:
意大利手语 (LIS)媒体管道 (MediaPipe) 是一个媒体管道.在RGB-D摄像头中.机器学习是机器学习.标记语言识别 标记语言识别

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科学领域:

  • 计算机视觉 计算机视觉
  • 人与计算机的交互
  • 语言学的语言学.

背景情况:

  • 聋会带来沟通障碍,尤其是在没有手语口译员的情况下.
  • 手的配置识别对于理解意大利手语 (LIS) 等手语至关重要.
  • 现有的方法通常将配置识别与时间手势建模集成在一起.

研究的目的:

  • 解决手的配置识别作为LIS的独立分类任务.
  • 为此任务提出一个机器视觉框架,利用RGB-D传感.
  • 评估真实深度数据对分类性能的影响.

主要方法:

  • 开发了一个框架,将MediaPipe手动地标提取与正常化的3D几何特征结合起来.
  • 采用支持矢量机 (SVM) 分类器进行配置识别.
  • 集成的传感器获取的RGB-D深度测量与基于地标的功能.

主要成果:

  • 拟议的方法显著提高了LIS手配置的分类性能和类别分离性.
  • 使用真实深度数据可以提高识别能力,特别是在几何上相似的配置中.
  • 从时间建模中识别脱配置简化了任务并改善了结果.

结论:

  • 实时深度数据对于在LIS中强大的手部配置识别至关重要.
  • 拟议的框架为开发先进的LIS分析系统提供了一个有希望的方法.
  • 这项工作通过专注于基本的配置级别问题,推进了手语识别领域.