3 days ago

Fixing a Shimano EF50-8R bicycle shifter

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

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43 days ago

Goodbye, Sweden. Goodbye.

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.

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91 days ago

Åland – Ice-skating in Finland

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?

93 days ago

Skridskoglädje på Tämnaren

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.

107 days ago

Programmer-friendly German keyboard layout on GNU/Linux

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.

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137 days ago

Dunedin's Finest View: Harbour Cone

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.

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137 days ago

Among the Clouds – Roys Peak

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.

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154 days ago

Case study: when average speed matters

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.

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187 days ago

Recursive circle packing with PostScript

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

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206 days ago

A runner's self-experiment: Lidingöloppet 2013

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.

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227 days ago

Akka from Kebnekaise

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

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235 days ago

Zwischenbericht von der KTH: Über Versuchskaninchen, Double-Degree, Kurswahl, Nerdvokabular und den Polarkreis

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.

244 days ago

Across Sweden from Kungshamn to Stockholm by Bike: Day 5

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.

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244 days ago

Across Sweden from Kungshamn to Stockholm by Bike: Day 4

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.

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244 days ago

Across Sweden from Kungshamn to Stockholm by Bike: Day 3

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.

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255 days ago

Across Sweden from Kungshamn to Stockholm by Bike: Day 2

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.

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255 days ago

Across Sweden from Kungshamn to Stockholm by Bike: Day 1

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.

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255 days ago

Across Sweden from Kungshamn to Stockholm by Bike

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!

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269 days ago

Von den Blauen Bergen

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.

270 days ago

Hirschberg: Bike and Hike

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.

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276 days ago

Hiking to Speer: Meeting the Nothing

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.

276 days ago

Munich-Zurich by Bus includes a Ferry Ride

Interesting weekend trip from Munich to Zurich. Hitchhiked with a bus. And got an unexpected ferry ride over Lake Constance.

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280 days ago

Lesson at Hörsaal 13

Lesson for a TUM student: a good Bavarian bite and drink at Hörsaal 13 on TUM campus Weihenstephan. “Hörsaal 13” translates to “Lecture Hall 13” but is in fact a pub with an attached beer garden – German sense of humor? Anyway, I conclude: definitely one of the better beer gardens.

280 days ago

Old places, new hikes – Geierköpfe

Recommendable hike close to the German-Austrian border. Starting at Musteralm at Plansee, remembering old times, then hiking up to two summits called Geierköpfe, crossing the rather exposed ridge from the western summit to the eastern summit. Enjoyable view on Zugspitze. Back the same way.

317 days ago

Managing encrypted devices with LVM on top of LUKS with luksctl

Start small: my first Arch Linux package submitted to the AUR. luksctl manages (portable) LUKS-encrypted devices with a logical volume manager on top of it. Profiles control how the devices are (un)locked, the logical volumes (de)activated, and the filesystems (un)mounted with a single command. Details are found at luksctl on Bitbucket.

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