Impressions from a riverside walk with a friend. This is “proof” for all my friends who had expressed doubt on the weather in London before I left to live there. Besides, I don’t even have an umbrella.

Mountain View in California is a place where cars are the primary means of transport. But I was told that biking is an option, too. So, I tested getting around with a bike. Here is a short review.

Humans are quite good at detecting motion. How about machines? Can computers automatically segment objects in videos? I dedicated my Master thesis to a particular variant of this question. Here are a few videos as a preview.

Cambridge is a bicycle-friendly city. And as I have learned recently, students at Cambridge University are usually not allowed to keep and use cars.

For some reasons, the front shifter of my bicycle stopped working properly. Time to take a screwdriver and see how the shifter actually works.

Everything has an end. Such has my student life in Stockholm. The last days give me a chance to sum up my roughly twenty months in Sweden.

From Sweden over the Baltic Sea to Åland in Finland for an afternoon of ice-skating. Waiting for us were beautiful frozen fjords. How come so few students are interested in this hobby?

Äntligen var det dags att sätta på sig skridskorna. Tillsammans med klubben gick det på en solig lördag norrut från Stockholm för att åka skridsko på Tämnaren, Upplands största insjö. Den mörka årstiden lyser verkligen upp när isen lagt sig. På riktigt.

German keyboards are usually pretty annoying for programming. Mapping the third-level of the buttons D, F, C, V to {, }, [, ] places the curly braces and brackets at more convenient locations without destroying much of the benefits of a German keyboard.

The name says it: Harbour Cone is a cone-shaped hill on the Otago Peninsula in New Zealand. While most tourists pay for a tour to see penguins and albatroses, I opted for the cheap variant using a regular bus and regular hiking boots.

Just when reaching the summit, a gap in the clouds allowed for a stunning view from Roys Peak in New Zealand: blue lakes, green vegetation, snowy mountains. A report from a moderate hike with an above-the-average return.

This case study shows the effects of acceleration, top speed, deceleration on total travel time on short distances at the example of Transrapid in Shanghai. Bottom line: it is the average speed that matters, not the top speed. Groundbreaking result … no! But it is an illustrative example with concrete numbers that shows why reporting top speeds creates illusions.

Ten lines of PostScript are sufficient to draw a pretty self-similar pattern constructed by packing circles into circles.

The annual racing series on Lidingö is extremely popular and was booked out way in advance this year. Out of curiosity (and because I succumbed to the excellent marketing), I took part amongst thousands of others in the 30km race on Lidingö. Here is a review of the event.

A wonderful journey through Sweden. Great weather conditions. Kebnekaise, Sweden’s highest mountain called. A story both with pictures and with words.

Den gibt es nur auf deutsch: meinen Bericht vom ERASMUS-Jahr im Rahmen des neuen Double-Degree-Studiums zwischen den Informatikfakultäten der Technischen Universität München und der Königlich Technischen Hochschule Stockholm.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. Here is a report about the last day – from Torshälla to Stockholm.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. Here is a report about the fourth day – from Mullhyttan to Torshälla.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. Here is a report about the third day – from Mariestad to Mullhyttan.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. Here is a report about the second day – from Vänersborg to Mariestad.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. Here is a report about the first day – from Kungshamn to Vänersborg.

Across Sweden with the bike from the west coast to the east coast? I have tried my luck. In a diary-style series of articles I will describe some of my experiences during the five days of biking In the hope that it might benefit others with similar ideas!

Fantastic view over the Alps from Halserspitze on the border between Austria and Germany. The mountain is only for the experienced and surefooted. Wildbad Kreuth at the foot of the mountain can be comfortably reached from Munich by train and bus.

Roundtrip: Tegernsee – Kreuth – Hirschberg – Bad Wiessee – Tegernsee. This mountainbike trip was different from previous ones. With the weather conditions permitting, we planned our route just in time. The roundtrip went astonishingly well.

A hike with phenomenal company lead from Amden to the top of the Speer mountain in Switzerland. Up there, thick clouds were hanging on one side of the long mountain ridge like an attempt to illustrate the Nothing from The Neverending Story by Michael Ende. A bath in Lake Walen topped off the hike.