Probability and statistics provide an excellent tool for understanding, modeling and communicating uncertainty in engineering systems. In many applications there is the added challenge of considering random quantities that vary over time and/or space. Examples can be found in seismic applications, financial markets, heterogeneous materials, and image processing, among many others. This course provides an introduction into some of the ways in which random processes and random fields are measured, quantified and communicated. Through video lectures, activities, and interactive content, students will learn about correlation functions, spectral density functions, local average processes and Monte Carlo simulation. There will be an emphasis on understanding each concept, estimating these quantities from data, and using this data as the basis for generating realistic sample random processes.
By the end of this course, you will be able to:
- Explain the meaning of the correlation function, the spectral density function, homogeneity, ergodicity.
- Identify parameters of a random process based on available data.
- Relate random process descriptors to reliability via maximum value distributions.
- Simulate a random process with desired correlation and/or spectral density function.
In this module, you will be introduced to some basic definitions of random processes and examples of engineering applications in which they are important. There will also be a review of probability density functions to introduce the marginal distribution that describes a random process.
涵盖的内容
5个视频1篇阅读材料1个作业1个讨论话题
显示有关单元内容的信息
5个视频•总计29分钟
Welcome: Course and Module 1 Overview•1分钟
Definition and Applications of Random Processes•3分钟
Types of Random Processes (and Fields)•9分钟
Review of Random Variables and Notation•12分钟
Marginal Distributions of Random Processes•3分钟
1篇阅读材料•总计10分钟
Random Variables and Distributions Notes•10分钟
1个作业•总计180分钟
Random Variables and Distributions•180分钟
1个讨论话题•总计2分钟
Examples of random processes•2分钟
Correlation Function of Random Processes
第 2 单元•小时 后完成
单元详情
In this module, you will be introduced to the correlation function and correlation length as a means to describe random processes. You will learn to recognize how changes in the correlation function affect the random process, and vice versa. Finally, there will be a case study in which the correlation function & length are calculated based on a given set of data.
涵盖的内容
5个视频1篇阅读材料1个作业1个非评分实验室
显示有关单元内容的信息
5个视频•总计20分钟
Overview of Module 2•1分钟
Review of Mixed Moments: Covariance and Correlation•5分钟
Correlation Function of a Random Process•5分钟
Correlation Length of a Random Process•4分钟
Calculation of Sample Correlation Function and Correlation Length•5分钟
1篇阅读材料•总计10分钟
Random Vectors and Processes Notes•10分钟
1个作业•总计45分钟
Correlation Functions•45分钟
1个非评分实验室•总计30分钟
Estimating Correlation Functions•30分钟
Spectral Analysis of Random Processes
第 3 单元•小时 后完成
单元详情
In this module, you will be introduced to the spectral density function as an alternative means to describe random processes. You will learn to recognize how changes in the spectral density function affect the random process, and vice versa. Finally, there will be a case study in which the spectral density function & moments are calculated based on a given set of data.
涵盖的内容
6个视频1个作业1个非评分实验室
显示有关单元内容的信息
6个视频•总计18分钟
Overview of Module 3•1分钟
Fourier Transforms•3分钟
Spectral Density Function•4分钟
Basic Properties of Spectral Density Functions•2分钟
Spectral Moments•5分钟
Calculating the Spectral Density Function and Spectral Moments•3分钟
1个作业•总计180分钟
Spectral Density Functions•180分钟
1个非评分实验室•总计60分钟
Estimating the Spectral Density Function•60分钟
Monte Carlo Simulation & Reliability
第 4 单元•小时 后完成
单元详情
In this module, you will work with simulation-based approaches to generate random processes, based on the correlation function or the spectral density function. The approach will be applied in the context of reliability.
涵盖的内容
3个视频1个作业2个非评分实验室
显示有关单元内容的信息
3个视频•总计19分钟
Overview of Module 4•1分钟
Simulation of Random Processes Using the Correlation Function•13分钟
Simulation of Random Processes Based on the Spectral Density Function•5分钟
1个作业•总计180分钟
Overview of Random Processes•180分钟
2个非评分实验室•总计120分钟
Simulation of Random Processes with Target Correlation Function•60分钟
Simulation of Sample Random Processes with a Target Spectral Density Function•60分钟
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