Windows Firewall Rule to enable Windows 10 computer to receive ping (IPv4 or IPv6 ping)

Windows Filewall >> Advanced >> Inbound Rules

File and Printer Sharing (Echo Request – ICMPv6 /or/ ICMPv4)

Enable the rule with scope “Any IP” for Remote IP Address.

Quick tools for Video Editing

1. Split mp4 video files (loss-less quality):
   • Avidemux (freeware) – https://avidemux.sourceforge.net/download.html
     • Recommended config: Video encode: Copy . Audio encode: ACC (lav).
     • Other option: Filmora Video Editor (Split + Merge mp4)
2. Transcribe video audio into text:
   • 2.1. Using Windows Speech-to-Text:
     • 2.1.1. Setup pre-requirement software: VB-CABLE Virtual Audio Device (a virtual audio device working as virtual audio cable. All audio coming in the CABLE input is simply forwarded to the CABLE output). https://vb-audio.com/Cable/index.htm
       • Recommended config: Windows >> Settings >> Audio >> Output: “VB-Cable…”, Input (MIC): “VB-Cable…”
     • 2.1.2. Use Windows Dictation function (Shortcut: window key+H to activate Dictation) and write text to Notepad.
     • All transcript text will be saved into a txt (plain-text) file. User needs to review, edit, and arrange text manually.
3. Create subtitle file “.SRT”:
   • 3.1. Subtitle “.srt” file contains the text which will be displayed on video screen.
   • We can have multiple subtitle files; each file for one languague.
   • Subtitle-file-name must contain video-file-name at the beginning. (E.g. video name: this_video.mp4, then subtitle name is this_video.srt or this_video_en.srt, this_video_vi.srt, etc.,). Save all subtitle files into the same folder with the video file; when playing video, it will automatically add all subtitle files; audience can select one of the subtitles in video player app.
   • 3.2. How to manually create a “.srt” file:
   • Watch video and add text into srt file in the following format. Can use Notepad to edit srt file:
   • order_number (start from 1)
   • hours:minutes:seconds,milliseconds –> hours:minutes:seconds,milliseconds
   • subtitle_text_here
   • For example:
   • 1
   • 03:04:05,150 –> 03:04:10,300
   • This is the subtitle for these video frames.
   • Continue until the video ends.
   • Source: https://www.indeed.com/career-advice/career-development/srt-subtitles
   • 3.3. Automatedly create srt file:
   • Try 1: Jubler Subtitle Εditor (https://www.jubler.org/download.html) — use MPlayer as video screen (https://sourceforge.net/projects/mplayerwin/files/latest/download).

Energy Demands of Storing Hydrogen (H2) and Ammonia (NH3)

Hydrogen (H₂)

Liquefying hydrogen requires cooling below -253°C, the energetic cost of which amounts to ~44.7% of the energy contained in the gas phase (Dias et al. 2020). Although cryogenic storage of hydrogen uses thick vessels that meet stringent sealing and insulation standards, additional energy losses occur due to evaporation (or boil-off) at a rate of about 0.520% of the total volume per day (Al-Breiki and Bicer 2020).

Coin materials

– Silver

– Gold

– Brass is composed of copper and zinc.

– Bronze is made up of copper and tin.

– Silver-plated coin: a coin is covered (plated) with an outer silver layer.

Bullion refers to physical gold and silver of high purity that is often kept in the form of bars, ingots, or coins.

.999, .925, .900, .800, .500,… .100 fine gold/silver coins: the purity levels of gold/silver coins

Installing Node and NPM

Before installing Node.js and npm on your machine, you first need to verify if it’s already installed.

Verifying the existing installation on Windows

On Windows, you can use the WINKEY+r shortcut key, which opens the Run window. Inside the Open: input of the Run window, type cmd and press the enter key. This will open the command prompt.

Inside the command prompt, type:

• node –version

If there is Node.js installed on your Windows OS, it will return a value similar to this:

• v16.14.2

Then you can confirm that you have npm as well, running this:

• npm –version

If npm is installed, you’ll get output similar to this:

• 8.5.0

Jailbreak iPhone

• Check if iPhone and iOS version is jailbreakable:
  • for iOS 15.0 – 15.7.3
  • Chip A8 – Phone 6, iPhone 6 Plus, iPad Mini 4.
  • Chip A8X – iPad Air 2.
  • Chip A9 – iPhone 6S, iPhone 6S Plus, iPhone SE,iPad (2017) 5th Generation.
  • Chip A9X – iPad Pro (12.9 in.) 1st generation, iPad Pro (9.7 in.).
  • Chip A10 – iPhone 7 and iPhone 7 Plus, iPad (2018, 6th generation),iPad (2019, 7th generation) (iOS 14 not supported).
  • Chip A10X – iPad Pro 10.5” (2017),iPad Pro 12.9” 2nd Gen (2017).
  • Chip A11 – iPhone 8, iPhone 8 Plus, and iPhone X.
  • for iOS 16.0 – 16.4
    • Chip A11 – iPhone 8, iPhone 8 Plus, and iPhone X.
  • Other iPhones and iOS are not be able to jalbreak as of July 2023.

Downgrade firmware for Sony WF-1000XM4 and Factory reset Nokia Android phone

1. Downgrade firmware for Sony WF-1000XM4 (true-wireless earbuds)

MDR Proxy – FW sidegrade tool for Sony bluetooth headphones/earbuds.

Widely-accepted good firmware version is 1.2.6 (bad version is 1.4.2)

2. Factory reset Nokia Android phone:

How to factory reset Nokia 6.1

3. Bypass FRP (Firmware Reset Protection)

Nokia 6.1 (TA 1043) Frp Bypass

Volume-Up + Power button to enter restore menu.

4. In case Google Setting keep crashing after the Step 3 (Bypass FRP):

• Go into the following apps and cleared the cache and cleared storage.

• Download Manager

• Google Play Services

• Google Play Store

M.2 MVMe vs M.2 SATA vs mSATA SSD

The M.2 standard, a specification for internally mounted computer add-in cards, was created to address the limitations of mSATA and provide more options for small form factor cards, including SSDs in different sizes and with different capacities. M.2 was originally called the Next Generation Form Factor (NGFF), and then formally renamed to M.2 in 2013. M.2 improves on the mSATA standard, which uses the PCI Express^® Mini Card physical card layout and connectors. As mSATA’s “successor,” M.2 provides higher performance and capacity while minimizing module footprint.

An M.2 SSD module is connected to a host either through a SATA interface or via a PCI Express (PCIe) lane. Though M.2 supports both SATA and PCIe, an M.2 module may only be inserted in either one of the two interfaces, so check your motherboard documentation to make sure that your module fits and works with the corresponding socket on the motherboard.

M.2 modules come in different sizes and can also be utilized for Wi-Fi, WWAN, Bluetooth, GPS, and NFC.

TestAS – Preparation Test

TestAS – Sample questions – en – 2017

https://drive.google.com/file/d/1af2bb8X6a23R0dRwJ05gj8-n2aVigZz3/view?usp=share_link

TestAS – Mathematics – Computer Science – Natural Science Module – 2016

https://drive.google.com/file/d/1NOTvY5KEA7_8V7DfERYW_VaiT5Rjroik/view?usp=share_link

TestAS – Preparation Book – Core Test – 2016

https://drive.google.com/file/d/1izU5kvJPMiOcDSNQwZXZ09POCuv2HD9Z/view?usp=share_link

TestAS-Economic-2017 (second edition)

https://drive.google.com/file/d/1yG7myqma_Z9QA_OzyqsuiPQwcFNcdMax/view?usp=share_link

How to check if my Windows 10/11 is genuine or not

From cmd.exe
slmgr /xpr
then look for “machine is permanently activated“