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Tuesday, June 17, 2025

Zhuo Yao, Ph.D.

Professional Website of Dr. Zhuo Yao
Zhuo Yao, Ph.D.
Professional Website of Dr. Zhuo Yao
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  • linux

    Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04

    WordPress is one of the most popular content management systems on the internet. It is open-source CMS and works well with almost any web hosting…

    calsalmon November 22, 2022
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  • NotePad++

    Notepad++ add to every line

    https://stackoverflow.com/questions/11003761/notepad-add-to-every-line Follow these steps: To add a word, such as test, at the beginning of each line: To add a word, such as test, at…

    calsalmon January 5, 2022
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  • R

    RStudio Theme

    https://tmtheme-editor.herokuapp.com/#!/editor/theme/Friendship%20Bracelet

    calsalmon November 26, 2019
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  • R

    Exercise 1: Multinomial logit model

    https://cran.r-project.org/web/packages/mlogit/vignettes/e1mlogit.html Kenneth Train and Yves Croissant 2019-07-22 There are 900 observations with the following variables: Note that the attributes of the alternatives, namely, installation cost…

    calsalmon November 8, 2019
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  • R

    Random utility model and the multinomial logit model

    Random utility model The utility for alternative l is written as: Ul=Vl+ϵl where Vl is a function of some observable covariates and unknown parameters to…

    calsalmon November 8, 2019
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  • linux

    Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04

    calsalmon November 22, 2022
  • NotePad++

    Notepad++ add to every line

    calsalmon January 5, 2022
  • R

    RStudio Theme

    calsalmon November 26, 2019
  • R

    Exercise 1: Multinomial logit model

    calsalmon November 8, 2019
  • R

    Random utility model and the multinomial logit model

    calsalmon November 8, 2019
  • R

    nhts_explorer/nhts_tnc_to_transit.ipynb

    calsalmon November 8, 2019

linux

Force SSH Client To Use Given Private Key ( identity file )

calsalmon August 13, 2015

Recently, my desktop hard disk crashed. So I reinstalled Linux and created a new set of private RSA keys for authentication. However, two of my…

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R

Updating R from R (on Windows) – using the {installr} package

calsalmon August 12, 2015

Upgrading R on Windows is not easy. While the R FAQ offer guidelines, some users may prefer to simply run a command in order to…

View More Updating R from R (on Windows) – using the {installr} package
linux

Linux Partition HOWTO

calsalmon August 7, 2015

5. Partitioning with fdisk This section shows you how to actually partition your hard drive with the fdisk utility. Linux allows only 4 primary partitions.…

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R

Using Loops with ggplot2

calsalmon July 30, 2015

http://reed.edu/data-at-reed/resources/R/loops_with_ggplot2.html library(stringr) library(reshape2) library(ggplot2) library(ggthemes) library(pander) # update this file path to point toward appropriate folders on your computer # folder where you want the…

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R

Mutiple Dataframes within Lists from the start

calsalmon July 30, 2015

Lists from the start Again: Don’t ever create d1 d2 d3 in the first place, just create a list d with 3 elements. Reading multiple…

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R

Dates and Times in R

calsalmon July 29, 2015

Dates and Times in R R provides several options for dealing with date and date/time data. The builtin as.Date function handles dates (without times); the…

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PhD Disseration

Citation Style Guide…for IEEE, ASCE, ASME, Journals & IEEE Template MS Word, LaTeX Template

calsalmon April 16, 2015

Citation styles are standardized systems for crediting and citing sources you’ve used for your research paper or assignment . B.Tech, M.Tech, MCA, Ph.D, B.E, M.E,…

View More Citation Style Guide…for IEEE, ASCE, ASME, Journals & IEEE Template MS Word, LaTeX Template
R

ggplot2 Cheatsheet from R for Public Health

calsalmon April 7, 2015

R for Public Health library(ggplot2) library(gridExtra) mtc <- mtcars head(mtc) mpg cyl disp hp drat wt qsec vs am gear carb Mazda RX4 21.0 6…

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R

How to format plots for publication using ggplot2

calsalmon April 7, 2015

The following is the code from a presentation made by Rosemary Hartman to the Davis R Users’ Group. I’ve run the code through the spin…

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R

ggplot2 Quick Reference: Themes

calsalmon April 7, 2015

A plot can be themed by adding a theme. ggplot2 provides two built-in themes: theme_grey() – the default theme, with a grey background theme_bw() –…

View More ggplot2 Quick Reference: Themes

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  • Install WordPress with Apache and Let’s Encrypt SSL on Ubuntu 22.04
  • Notepad++ add to every line
  • RStudio Theme
  • Exercise 1: Multinomial logit model
  • Random utility model and the multinomial logit model
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