Dec 04

History of Linux

Ref:

Dec 04

Operating Systems: Components, OS User Interfaces

Ref: Internet, Google, Google Images.

Dec 04

Kernel, Shell, Operating Systems and Functionality of Operating Systems

Operating System Functionality

Ref: https://www.geeksforgeeks.org/introduction-of-process-management/

Dec 04

Hardware/Software/Operating Systems

Ref:

•Ref: https://www.uow.edu.au/student/learning-co-op/technology-and-software/operating-systems/

•https://www.learncomputerscienceonline.com/operating-system/

•System Software: https://www.techtarget.com/whatis/definition/system-software

Dec 04

Difference Between System Software and Application Software

Ref: https://www.geeksforgeeks.org/difference-between-system-software-and-application-software/

Dec 04

Do cars have computers and operating systems inside?

Ref: Internet, Google, Google Images

Nov 25

Misc. on Power Shell Script

Misc. on Power Shell Script

How to read data from users?

Read-Host

How to write/print output data/text to the user:

Write-Output

How to Check if a file exists?

Test-Path $filePath

How to append data to a file?

Add-Content -Path $filePath -Value “x: $x, y: $y”

How to create a file?

New-Item -Path $filePath -ItemType File -Force

How to write content to a file?

Set-Content -Path $filePath -Value “x: $name, y: $age”

How to get a list of all files in a directory

$files = Get-ChildItem -Path $dirPath

How to find the size of a file?

$file.Length

How to append content to a file?

$content | Out-File -FilePath $outputFile -Append

How to Create a file and write content to it?

$content | Out-File -FilePath $outputFile

Nov 24

Linux Script: Read Data from User and Show Some Columns

read -p “Give me some data: ” user_data

echo $user_data

echo $user_data | cut -d ‘ ‘ -f 1,3

Nov 22

Power Shell and Process

Get-Process

Get-Process winword, explorer | Format-List *

Get-Process | Where-Object {$_.WorkingSet -gt 20000000}

$A = Get-Process

$A | Get-Process | Format-Table -View priority

Get-Process pwsh -FileVersionInfo (did not work)

Get-Process SQL* -Module

Ref: Internet

Stop-Process -Name “notepad”

Stop-Process -Id 3952 -Confirm –PassThru

calc $p = Get-Process -Name “calc”

Stop-Process -InputObject $p

Get-Process | Where-Object {$_.HasExited}

Get-Process -Name “lsass” | Stop-Process

Nov 22

What Is the Efficient Market Hypothesis (EMH)

What Is the Efficient Market Hypothesis (EMH)?
The efficient market hypothesis (EMH), alternatively known as the efficient market theory, is a hypothesis that states that share prices reflect all available information and consistent alpha generation is impossible.

According to the EMH, stocks always trade at their fair value on exchanges, making it impossible for investors to purchase undervalued stocks or sell stocks for inflated prices.

Therefore, it should be impossible to outperform the overall market through expert stock selection or market timing, and the only way an investor can obtain higher returns is by purchasing riskier investments.”

Ref: https://www.investopedia.com/terms/e/efficientmarkethypothesis.asp

“Opponents of EMH believe that it is possible to beat the market and that stocks can deviate from their fair market values.” [2]

We predict stocks using
Usually: Proper selection of
Stocks and Time Intervals
Statistics
Machine Learning

This paper goes beyond and Uses
Spatio-Temporal Relationship
among stocks
Graph theory