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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

552
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
552
Language Development01:22

Language Development

462
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
462
Components of Language01:24

Components of Language

416
Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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Improving Translational Accuracy02:07

Improving Translational Accuracy

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2.7K
Language and Cognition01:27

Language and Cognition

466
Language serves as a bridge between ideas and communication, influencing how individuals perceive and interact with the world. Psychologists have long debated whether language shapes thought or vice versa. This discussion gained grip with Edward Sapir and Benjamin Lee Whorf in the 1940s, who proposed that language determines thought, a concept known as linguistic determinism. They suggested that the vocabulary and structure of a language influence how its speakers think and perceive reality.
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Mass Analyzers: Overview01:13

Mass Analyzers: Overview

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The mass analyzer is a crucial component of the mass spectrometer. In the ionization chamber, the vaporized sample is bombarded with a high-energy electron beam to generate a radical cation and further fragment into neutral molecules, radicals, and cations. A series of negatively charged accelerator plates accelerate the cations into the mass analyzer. The mass analyzer separates ions according to their mass-to-charge (m/z) ratios and then directs them to the detector. The common types of mass...
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相关实验视频

Updated: Sep 19, 2025

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
06:48

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment

Published on: June 25, 2019

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词汇库2:用于大规模词汇数据的预计算功能.

Frederic Blum1,2, Carlos Barrientos1, Johannes Englisch1

  • 1Department of Linguistic and Cultural Evolution, Max-Planck-Institute for Evolutionary Anthropology, Leipzig, Saxony, 04103, Germany.

Open research Europe
|June 5, 2025
PubMed
概括
此摘要是机器生成的。

标准化词汇数据集 Lexibank 2 现在包括超过 3100 种语言和 150 万个词形. 本资源促进了历史语言学和类型学的自动化跨语言分析.

关键词:
比较的词汇列表.计算语言学 计算语言学跨语言数据跨语言数据历史语言学 历史语言学莱克西班牙语银行 (Lexibank)

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科学领域:

  • 计算语言学 计算语言学
  • 历史语言学 历史语言学
  • 语言类型学语言类型学

背景情况:

  • 大规模词汇和语法数据集的标准化对于比较语言学至关重要.
  • 现有的数据集在标准化方面面临挑战,阻碍了数据的扩展和重用.
  • 莱克西银行一直是跨语言数据的关键资源,但需要更新.

研究的目的:

  • 为了呈现莱克西银行数据集的更新和扩展版本.
  • 加强跨语言词汇数据的标准化,以提高可用性.
  • 通过预先计算的功能和标准化的格式来促进自动化语言分析.

主要方法:

  • 使用计算机辅助的工作流程,系统地整理已发布的词汇列表数据.
  • 遵守跨语言数据格式 (CLDF) 的数据标准化标准.
  • 语义和语音特征的预计算用于自动化分析.

主要成果:

  • 莱克西银行更新的数据集现在涵盖了3,100多种语言和150万个词形.
  • 已经实施了标准化的引用,语义词汇和语音转录.
  • 展示了数据库查询,以推断单词相似性,集词化和语义多样性.

结论:

  • 莱克西银行2在创造全面,标准化和可访问的语言资源方面取得了重大进展.
  • 数据集及其特征使历史语言学和语言类型学的大规模,自动化分析成为可能.
  • 标准化格式促进了数据的重复使用和语言社区内的协作.