I teach children how to programm and do other things with technology in an organisation called Coding Pirates in Denmark, which aims to be a kind of scout movement for geeks. A best seller among the kids is learning how…
Airbag sensors There is a small amount of gold inside the Airbag sensor. The sensor contains a small gold-plated marble, which amounts to some tiny amount of gold. Integrated Chips One kilogram of chips contains 1-8 grams of gold (according…
These guys found that road-side dust contains 1000 DKK worth of platinum per 1 ton of dust. Cody explains that this concentration of platinum equals the amount found in good-quality platinum ore. Does the stretch of road matter? In a…
While I intuitively like the concept of Urban Mining – we have all these precious raw materials within easy reach of robots – I know nothing about it. I want to remedy that with the best ignorance cure of all:…
I have adapted an example neural net written in Python to illustrate how the back-propagation algorithm works on a small toy example. My modifications include printing, a learning rate and using the leaky ReLU activation function instead of sigmoid. import…
In this post I will give a brief overview of my father’s (Georgios Kefaloukos) many activities in the early part of his life. After dinner today I decided to ask him about his life story, and took as many notes…
I work in the ad tech industry, which means that I track people online for a living. Mainly, I do it because the industry has interesting computer science problems and because the job pays well. I will not defend ad…
I love dal. Here is my simple recipe, which draws it’s inspiration from both India and the Mediterranean Region. Ingredients: – 200-300 g split red lentils – 1 onion – 2-3 cloves of garlic – 1 can of crushed tomatoes…
I like to dabble with machine learning and specifically neural networks. However, I don’t like to wait for exorbitant amounts of time. Since my laptop does not have a graphics card that is supported by the neural network frameworks I…
This guide outlines my first (and failed) attempt at mining Ether on AWS. I will first show how I set up a GPU instance to mine Ether. Then I will conclude on the profitability of the whole endeavour in a…