Humans are, social animals, and because of that, they need to feel accepted (apart from engineers). Acceptance is so important, that people will end up denying the reality just to “fit in” a specific group. Seems absurd right? Continue reading “Conformity”
Climate change
Climate change is an hot topic. It is so real that we even convinced Trump, so is time to find real solutions. Are the effort that we are doing helping the environment? Are they even going to the right direction? In this small article i will try to report few numbers about the climate change that you will probably not like it. Continue reading “Climate change”
Throwing water to the Sun
This summer has been quite hot…So hot that I started to think how to turn off the sun for a while.. First thought would be to throw some water to the sun to cool it down. Will it work? After all, when you have a fire and you throw some water to it, it will cool down and eventually die off.. Can we do something similar with the Sun? Maybe throw a lot of water, like 10 time its mass to it? Continue reading “Throwing water to the Sun”
Spent Nuclear Fuel
In the last article I explained what happen to uranium inside the nuclear reactors (I advise that you read that first). Now i want to close this topic with an article that explain what is usually happening to the nuclear wastes when they are removed from reactor. Continue reading “Spent Nuclear Fuel”
Nuclear Reactor’s fuel
Yesterday I saw a commercial of Chernobyl HBO TV series and it inspired me to write this article on nuclear power reactors. The idea is to briefly explain the physics behind the nuclear fission and what happen to the uranium inside the reactor. So lets start. Continue reading “Nuclear Reactor’s fuel”
Hardware-based authentication: Yubikey configuration
In the last article I gave a quick overview of the hardware tokens and the yubikey. Today we will go more in details and we will see how to set and use GPG keys on the yubikey. Continue reading “Hardware-based authentication: Yubikey configuration”
Hardware-based authentication: Yubikey overview
In this article series, I am going to explain what is an hardware based authentication and how to configure one of the most famous (the yubikey) to work with your accounts and hold your ssh /gpg keys . Continue reading “Hardware-based authentication: Yubikey overview”
Setup data disks on Azure VM and Fix broken FSTAB
This is a quick guide on how to configure extra data drives to ubuntu/linux machine on azure, to get automatically mounted on startup using the shell. Also i will explain how to fix the boot process in case you mess up with the fstab file and the VM will not boot anymore. Continue reading “Setup data disks on Azure VM and Fix broken FSTAB”
MongoDB optimization
Databases are like religion. Everyone believe to withhold the ultimate best solutions… These ordered collection of data that are in the core almost all (if not all) complex systems. Even Simple website like this, have thousands of entries in a sql like database, and they never creates problems, until … one rainy day they do became slow, unresponsive, resource hungry… and that is where the pain start. Today I will give some hint on how to try to optimize a MongoDB database, by looking at its stats(). Continue reading “MongoDB optimization”
Bit Coin Wallet Collider
Ahh BitCoins! Welcome to the world of crypto currencies, where everything is decentralized and where making money is as easy as find a solution to a crypto-problem… Continue reading “Bit Coin Wallet Collider”