Study
It is study time again
Still working on my math studies, and I just got my books for the first course… it is kind of fun to see that I need all that stuff that I used to have at school again. Pens, pencils, a Read more…
News
Starting a new study – Bachelor Informatica
I’m starting my studies at the Open University, trying to get the “Bachelor Informatica”, which is a course about software development. This is going to be a study of a couple of years (about 5 or so), so it’s going Read more…
Other stuff
Written communication… it sucks.
Sometimes issues between family members or friends can escalate rather quickly, especially when there are poor communication media involved. This is why I hate using chat, email or any other type of written communication. It is impersonal, small things are Read more…
Weight Loss
Walking… biking… and a kilo lighter (112.8)
Monday I took a 3km walk, yesterday (tuesday) a nice trip on the bike. This helped, I’m at 112.8 now. I’ve started to pick up sports again, exercise more and do more training in the early morning after I wake Read more…
Weight Loss
113.7 – Yesterday was tough
Yesterday was tough. I ate way too much, didn’t do any exercise and was literally tired all day. On top of that, we had an internet service disruption, so I had something like… I’m not doing ANYTHING today… except watching Read more…
Tech
Sunday 2:30 to 12:30 – Internet service disruption for a large part of The Netherlands
We’ve been 11 hours without internet. At around 2:30 (before the end of daylight savings time) to about 12:30 (winter time) internet connections were not working. Due to this my server was unreachable, some of my applications and websites were Read more…
Software Development
The difference between Business Logic and Repositories
Sometimes Business Logic and Repositories are used as a single term, or the functionality of these items are made in the same classes. When designing software I tend to put these completely separate. It has multiple advantages, and provides separation of concerns.
Weight Loss
The last 4 months in weight loss (113.4)
The last couple of months were a bit stable. Some ups, some downs, but I’m basically ‘stalled’ for about a year now. The last year has been a weird year, from sports to a knee injury and sitting still because Read more…
![By Driving_Google_Self-Driving_Car.jpg: Steve Jurvetsonderivative work: Mariordo [CC BY 2.0 (https://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons](https://jeroenlandheer.com/wp-content/uploads/2018/10/1024px-Googles_Lexus_RX_450h_Self-Driving_Car-360x240.jpg)
Science
The Moral Machine
If self-driving cars become widespread, society will have to grapple with a new burden: the ability to program vehicles with preferences about which lives to prioritize in the event of a crash. Human drivers make these choices instinctively, but algorithms Read more…
Tech
Upgrading security on my servers
I’ve been running very secure websites from day 1. This website (jeroenlandheer.com) used to be hosted with tumblr, now it is a self-hosted wordpress website with proper HTTPS security. In fact, we get an A+ rating from Qualys. TLS 1.2 Read more…