Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Properties of the z-Transform I01:17

Properties of the z-Transform I

162
The z-transform is a fundamental tool in digital signal processing, enabling the analysis of discrete-time systems through its various properties. It is an invaluable tool for analyzing discrete-time systems, offering a range of properties that simplify complex signal manipulations. One fundamental property is linearity. For any two discrete-time signals, the z-transform of their linear combination equals the same linear combination of their individual z-transforms. This property is essential...
162
Definition of z-Transform01:26

Definition of z-Transform

339
The z-transform is a powerful mathematical tool used in the analysis of discrete-time signals and systems. It is an essential analytical tool, analogous to the Laplace transform used in continuous-time systems. It plays a crucial role in the analysis of signals and systems, complementing the discrete-time Fourier transform. Both the z-transform and the Laplace transform convert differential or difference equations into algebraic equations, simplifying the process of solving complex problems.
339
Choosing Between z and t Distribution01:25

Choosing Between z and t Distribution

2.7K
The z and the Student t distribution estimate the population mean using the sample mean and standard deviation. However, to decide which distribution to use for a calculation, one needs to determine the sample size, the nature of the distribution, and whether the population standard deviation is known. If the population standard deviation is known and the population is normally distributed, or if the sample size is greater than 30, the z distribution is preferred. The Student t distribution is...
2.7K
Ethics in Research01:56

Ethics in Research

22.9K
Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.
22.9K
Properties of the z-Transform II01:16

Properties of the z-Transform II

103
The property of Accumulation in signal processing is derived by analyzing the accumulated sum of a discrete-time signal and using the time-shifting property to determine its z-transform. This principle reveals that the z-transform of the summed signal is related to the z-transform of the original signal by a multiplicative factor.
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
103
Longitudinal Research02:20

Longitudinal Research

11.8K
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
11.8K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

[Textual research on Fuxiong].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·2025
Same author

[Effect of Valeriana jatamansi extract on fecal UPLC-MS/MS metabolomics in rats with diarrheal irritable bowel syndrome].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·2021
Same author

[Effects of baldrinal of Valeriana jatamansi on expression of CRF, TPH1 mRNA and 5-HT in rats with irritable bowel syndrome].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica·2017
Same author

A rapid and simple method for identifying Mycobacterium tuberculosis W-Beijing strains based on detection of a unique mutation in Rv0927c by PCR-SSCP.

Microbes and infection·2009
Same author

CO oxidation over AuPd(100) from ultrahigh vacuum to near-atmospheric pressures: the critical role of contiguous Pd atoms.

Journal of the American Chemical Society·2009
Same author

Daunorubicin-loaded magnetic nanoparticles of Fe(3)O(4) greatly enhance the responses of multidrug-resistant K562 leukemic cells in a nude mouse xenograft model to chemotherapy.

Zhongguo shi yan xue ye xue za zhi·2009

相关实验视频

Updated: Jun 4, 2025

Author Spotlight: Optimization of Processing Technology for Tiebangchui with Zanba Based on CRITIC Combined with Box-Behnken Response Surface Method
09:16

Author Spotlight: Optimization of Processing Technology for Tiebangchui with Zanba Based on CRITIC Combined with Box-Behnken Response Surface Method

Published on: May 12, 2023

1.1K

[关于齐坦的文本研究]

Fang-Yuan Mu1, Kun-Yu Li2, Jia-Xin Tian1

  • 1Xiyuan Hospital, China Academy of Chinese Medical Sciences Beijing 100091, China.

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
|December 19, 2024
PubMed
概括

进口的传统中医药Zitan的起源令人困惑. 文本研究证实Zitan是Santalum专辑的紫色变体,而不是豆类木,澄清了它的临床应用.

关键词:
这种动物叫Pterocarpus indicus.这种动物叫Pterocarpus santalinus.桑塔鲁姆的专辑这就是Zitan Zitan.关于医学材料的文本研究.

更多相关视频

Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development
06:00

Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development

Published on: March 17, 2023

421
A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid
08:09

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

Published on: June 1, 2018

7.2K

相关实验视频

Last Updated: Jun 4, 2025

Author Spotlight: Optimization of Processing Technology for Tiebangchui with Zanba Based on CRITIC Combined with Box-Behnken Response Surface Method
09:16

Author Spotlight: Optimization of Processing Technology for Tiebangchui with Zanba Based on CRITIC Combined with Box-Behnken Response Surface Method

Published on: May 12, 2023

1.1K
Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development
06:00

Optimization of the Epimedii Folium Mutton-Oil Processing Technology and Testing Its Effect on Zebrafish Embryonic Development

Published on: March 17, 2023

421
A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid
08:09

A Novel Method for the Pentosan Analysis Present in Jute Biomass and Its Conversion into Sugar Monomers Using Acidic Ionic Liquid

Published on: June 1, 2018

7.2K

科学领域:

  • 传统中国医药 传统中国医药
  • 民族植物学 民族植物学
  • 药理学是指药理学,即药理学是指药理学.

背景情况:

  • 齐丹是一种进口的草药,在传统中医 (TCM) 配方中得到广泛应用,如沈平.
  • 其不寻常的地位和不清楚的植物起源对一致的临床使用构成了挑战.
  • 历史上的混乱源于明朝和清朝期间豆类木物种的引入.

研究的目的:

  • 为了澄清在传统中医药中使用的齐丹的原始植物.
  • 调查Zitan的历史命名,地理分布和疗效.
  • 解决影响Zitan临床应用的模两可的问题.

主要方法:

  • 关于古代中国医学材料的全面文本研究.
  • 对有关桑塔卢姆专辑和豆类木的历史记录的分析.
  • 考虑明朝和清朝的历史家具趋势.

主要成果:

  • 古代文本描述来自东南亚的Zitan,具有味,冷酷的性质和血缘关系.
  • 从历史上看,齐坦被用于毒素和风相关的疾病,伤口和血液静止.
  • 由于紫色,Pterocarpus santalinus和P. indicus被错误地认定为Zitan,从而在清朝后被用于药用.

结论:

  • 在传统中医药中使用的Zitan被证实是Santalum专辑的紫色变体.
  • 这一发现使它与诸如Pterocarpus santalinus和P. indicus.等豆类木物种有所区别.
  • 澄清Zitan的植物性身份支持其在TCM中的准确识别和临床应用.