c't uplink - A new project

16. März 2014, 10:45

We’ve been working on a project for a while now, and finally we released our first c’t video podcast a couple of weeks ago. I really like how we’ve improved the details bit by bit. This actual episode, I wasn’t part of the panel, but helped our video producer Johannes with the tech. It was a lot of fun!

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Gedanken zur Cloud von 2006

28. Mai 2013, 07:26

Ich bin letztens über eine alte Hausarbeit von mir aus dem Jahr 2006 gestolpert. Der Titel: “Daten ins Netz! Wie das Internet der Festplatte Konkurrenz macht”. Heute würde das wohl “Daten in die Cloud” heißen. In der Hausarbeit hatte ich zwei Szenarien beschrieben, wie wir in Zukunft vielleicht unsere Daten verwalten werden. Beim ersten Szenario muss ich sagen: Punktlandung! Beim zweiten: Kommt noch :) Nur dass Google das meiste davon kostenlos bereitstellen würde, das wäre mir wohl im Traum nicht eingefallen.

Szenario 1:
Hans Meier hat seine 400-GB-Festplatte und seinen USB-Stick bei eBay verkauft. Er hat sich einen Account bei Google eingerichtet. Dieser erlaubt ihm eine nahezu beliebige Speicherkapazität, ähnlich wie bei Google Mail. Er muss für diesen Account bezahlen, um ihn voll nutzen zu können, aber das nimmt Herr Meier gern in Kauf. Schließlich fallen für ihn zahlreiche andere Kosten weg. Textdokumente und Präsentationen für seine Firma erstellt er jetzt mit den entsprechenden Anwendungen, die Google über das Netz anbietet, teilweise auch gemeinsam mit Firmenkollegen. Dafür kann er ihnen einen zeitlich begrenzten Zugriff auf die entsprechenden Dokumente gewähren. Google speichert seine Daten mit Meta-Informationen ab, sodass Meier auf seinem Online-Speicher alle Daten schneller wieder findet als vorher auf seiner Festplatte. Leiht er sich bei Google Books ein Buch aus, so ist dies zeitbegrenzt in seinem Account verfügbar, genauso wie seine Lieblings-Tageszeitung, die er abonniert hat, die neue Coldplay-CD und verschiedene Filme, für die er eine lebenslange Lizenz besitzt. Diese Daten sind nicht wirklich auf seinem Account gespeichert, sie liegen auf dem Server der Hersteller. Aber wenn Hans Meier sie über seinen Account benutzt, verhalten sie sich wie dort abgelegte Dateien. Er kann sie öffnen, er kann Textstellen oder Filmsequenzen markieren und für die nächste Party einen Musik-Mix erstellen. Wenn Meier nach Seattle fliegt, um dort seine Firmendaten vorzustellen, dann kann er seine Präsentationen im Flugzeug über ein im Sitz eingebautes Panel noch einmal überarbeiten (Laptops sind wegen der Gefahr von terroristischen Anschlägen auf Flügen inzwischen verboten) und in Seattle direkt über den Beamer, der einen Internetzugang besitzt, abrufen. Er braucht auf seiner Dienstreise eigentlich nicht einmal mehr seinen Laptop. Was Hans allerdings nicht weiß: Ein Hacker der Konkurrenzfirma Suxessor versucht schon seit einigen Wochen, sein Account-Passwort zu knacken.

Szenario 2:
Tim Meier freut sich auf das Wochenende. Sein Vater ist in Seattle, und Tim hat mehrere Freunde für eine LAN-Party bei sich zuhause eingeladen. Früher war das immer kompliziert, weil alle ihre Rechner hin- und herschleppen mussten. Heute aber nehmen sie in einem Rucksack ihren ultraleichten Bildschirm, ihre Maus und ihre Tastatur mit. Gespielt werden soll diesmal der gerade erschienene Ego-Shooter Quarterlife III. Früher hätte Tim das nicht spielen können, der Rechner von seinem Vater war gerade mal ausreichend für Büroarbeiten ausgestattet. Am Wochenende aber wird Tim sein angespartes Taschengeld dazu verwenden, einen von seiner Lieblings-Computerspiele-Zeitschrift beworbenen Superrechner mit einer High-End-Grafikkarte für 48 Stunden zu mieten. Dazu benutzt er seinen Online-Account, auf den sein Vater regelmäßig Taschengeld überweist. Das neue Spiel kann er gleich dazumieten. Sein Bildschirm und die Eingabegeräte sind mit dem Internet verbunden. Er gibt die IP des gewünschten Rechners ein und seine Account-Daten, und ab sofort ist er mit dem Superrechner, der in einer Serverfarm in Russland steht, verbunden. Bewegt er seine Maus, werden diese Eingaben über das Internet an den Rechner in Russland gestreamt, und zurück wird die Ausgabe an den Bildschirm gesendet. Da ihn der Account als unter 16 ausweist, sind bei ihm im Spiel alle Gegner als Roboter dargestellt, statt Blut fließt Öl. Sein bester Freund Maik dagegen hat seinen Account gehackt, weswegen er dort als 21-Jähriger ausgewiesen ist. Er spielt mit echtem Blut.

Die komplette Hausarbeit als PDF: ha_cms_barczok.pdf

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Cape Wrath Trail

27. Januar 2013, 10:22

My hiking boots are longing for some trail and mud underneath, and my feet are twitching nervously. It’s time to go for another adventure, for another hike! So my brother an me just booked flights to Glasgow, to head out for a very challenging trail which will bring us to the north edge of Scotland: Cape Wrath.

Cape Wrath
(photo by Stefan Klaas)

We will be hiking for two weeks, out in the wild. The Cape Wrath Trail leads from Ft. William to the north end of Scotland, Cape Wrath. Since the route is more than 200 miles long and unmarked, we won’t be able to make the whole distance in two weeks. So right now we are still working out which part of the trail we will hike: from south to north, which would leave out the beautiful northern part. Or from north to south, which will be a lot harder from the terrain, and will be hard to get to in April.

Well, we’ll see, but anyway: It looks beautiful, and I can’t wait for the hike …

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Hiking the A.T. - Part 3: People

20. Januar 2013, 19:50

“It’s not about the miles, it’s about the smiles”, people say when they talk about the Appalachian Trail. And they are right: It’s all about the people you meet along the way.

It’s day 7 on the trail now, April 21st, and I have to think about those words a lot. Last night that saying took a little setback for me, when for the first time we met people on the trail that we actually didn’t like. People who we didn’t want to share a smile. People who make us want to hike farther and faster today, to avoid them at the next shelter.

at the trail

Everyone who is hiking the A.T. is part of a community from day one. A community of funny and serious, crazy and wise, ambitious and relaxed, young and old, lazy and hard working, fast and slow, nice and not so nice, but altogether amazing and interesting people. And while they might sometimes be as different as night and day, and although they wouldn’t greet each other on the street if they met in regular life, here they share at least one thing: They have decided for one reason or another to spend the next months hiking the A.T.

Students, seniors or unemployed, job quitters, recently divorced or just the occasional adventurer. It’s almost like a summer camp in the woods, only spread into dozens of shelters along the way. You get thrown into that group of people like in a group of stranded castaways, and it’s almost impossible to avoid them.

It started in Atlanta, when we got picked up from the staff of the Hiker Hostel, the place from where we would set out for the A.T. It’s easy to spot other A.T. hikers when you sit in a train station. Huge backpack with poles and pots hanging out of the pack, hikers shoes, hikers cloth.

So we met Michelle, Dana and Randy, who were also waiting for the pick up, right away: “Hey, what’s your name?”, “Going to the A.T.?”, “How many miles are you planning?”, “How heavy is your bag?”. Within minutes you are in a conversation as if you knew each other for many miles. It’s because everyone has done the same things for the last few months: weighing gear with the kitchen scale, hiked miles for training and to walk the boots in, calculated food rations, studied the A.T. guides for many nights. We all became A.T. experts, we all are students on the same subject, and now we want to share our knowledge.

Standing Indian Mountain

Seven days later we have met dozens of those people along the way: Gram Man, Camel, Haystack, Johnny Rocket, Flash Gordon, Pittsburgh John, Badger, Josh, Ryan, Snail, Tortoise and so many others. It’s a great community, and it changes every day: You never know, who you will meet at the next shelter, new or known faces. Some hike faster, some hike slower, some drop out and some join in later. Sometimes you hike with someone for days, then loose him for weeks, just to see him unexpectedly a month later sitting on a forest clearing having lunch. And it’s like you’ve never been apart.

At the end of our journey my brother will tell me: Maybe the special thing about those friendships on the trail is, that you never know whether it’s your last goodbye when you leave the shelter in the morning. When you see someone you know later, camping at the same shelter, or pouring water at the same source like you, you always share a warm, big welcome. And you feel happy, because you could not count on it.

On day 7 though, we are on the run from other people. We just met a couple of stupid 40-something year old guys at the shelter last night, who took the whole shelter for themselves, talking loud and drinking much. They were boasting about their hikes, telling hunting stories and showing around their big hunter’s knives. They also say some pretty racist things, make fun of other people, leave their stuff and food lying around everywhere. At the end we decided to hit bed early to get up as soon as possible the next morning, to get some miles between us next day.

And so we hike and hike, miles and miles, running away whole day. As we hit the 1600 meters high Standing Indian Mountain, we are astounded by the great view over the land, but we don’t stay for long afraid they might catch up. It will be a long day, almost 25 miles, but when we arrive at the shelter at last, we are happy. We made sure to never meet those guys again.

at the shelter

As we prepare our dinner in the evening, tired and hungry, we spot someone hiking down the path toward the shelter. It’s almost dark now, hard to recognize the face, and for a moment we are afraid, it could be one of those belligerent fellows. But no, it’s Pittsburgh John, a guy with a tarp and a great attitude, who we haven’t seen for a couple of days. And as he approaches us, we shout a loud welcome: “Hey, where did you come from just now?” He smiles, and so do we.

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Wildnis, I like

13. Januar 2013, 21:22

Almost a year after our big journey on the A.T. I still haven’t finished to transfer all my journal scripts into nice blog entries. In the meantime I wrote about my travel experience in the editorial of the magazine I am working for. Enjoy! (unfortunately, German only)

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Hiking the A.T. - Part 2: Rain

21. Juli 2012, 22:42

120418_204802_17461.jpg

“Thanks for taking that poncho to Keith”, Gary says to me, as he drops my and me brother off at Dicks Creek. “God bless you”. Then he gets to his van and drives to his Hostel, as we walk back onto the trail and into the rain. The rain that’s been pouring for 16 hours now.

We’ve been keeping out of the rain for most of the time so far, thanks to Gary and his hostel. The Bluberry Patch Hostel is one of those magical places on the trail. Gary has been a thru-hiker in 1991, and he is running the hostel for a while now, as a ministry. Which means: Instead of paying, you give a donation, if you can. And it means: on the table is a bible, and at breakfast, Gary says prayer.

When we heard that a big storm front was approaching the Appalachians from west around evening, we had packed our stuff fast last morning, and almost ran up and down the hills. We were planning to leave the trail anyway, to hitchhike into the next town for resupply our food and stove fuel, so we tried to be early and got there around 2 pm.

The Bluberry Patch Hostel is located between Dicks Creek and Hiawassee and offers 8 bunks for hikers. And it has a nice little porch, where we sat and watched the rain start, as we cleaned our boots and sorted our backpacks. To save on pack weight, we hitch to a town to resupply every 2 to 5 days on the trail, and also use that break for shower, laundry, and a nice hot meal.

For resupply we didn’t have go to the supermarket this time, though. We had prepared a pack of food back in Atlanta, and had sent it from there to the Bluberry Patch Hostel. Such a mail drop, as it is called on the AT, can save some time and will help you through spots, where there is a Hostel, but there are no or only expensive shops.

Maildrop

Oats, dried fruits, nuts, sugar, cereal bars, coffee and tea, candy bars, noodles, broth, mashed potatoes, that is our basic food. We always try to get some fresh fruit and vegetables, too, when we hit the little towns. We don’t have any of those in our mail drop, but we find something else that is crucial as well: another roll of toilet paper. We didn’t want to send the denaturalized alcohol (Spiritus in German) for our stove via mail, but fortunately Gary offers some at his hostel.

Gary’s place gets crowded now, and at 4 pm, we all hop in his car to drive down to Hiawassee. Although we are good on resupply, we still are keen on the visit to that little town, because there is a hot meal waiting for us. And even better, it’s an all-you-can-eat-buffet, which means hiker paradise. Two hours later we are stuffed and happy as hikers can be. When we come back to the hostel, we find a great surprise waiting for us: Johnny Rocket and Flash Gordon, two real fast (and real nice) hikers have arrived. As the rain keeps pouring, we keep sharing our stories of the last days and talk late into the night. It already feels like a hikers community.

from Georgia to North Carolina

The next morning brings more rain, but also great breakfast: Pancakes, sausages, scrambled eggs and hash browns. Gary has it all prepared and calls us into his guest room, welcomes us along with his wife, and says prayer. He makes sure to give thanks for the weather. Although the rain is annoying to us hikers, it was needed for the land. And it’s not even that bad. When Gary was hiking the AT in 1991, 30 out of the 40 first days were rain days, he tells us. So we’ve been actually doing great so far, having only 1 rainy day in 6 days total. And rain isn’t even the worst you can get. “More people drop out in Virginia, when it gets really hot”, says Gary. Also, you can get snow, hail or thunderstorm. It can get really nasty. And it can get really cold.

But rain can be dangerous, too, if you are not prepared for it. You need rain gear, and on a day like this, even the best rain coat will leave you wet, as Ralph and me will experience. So you also need clothes, that don’t soak, and that dry pretty fast. Keith, who stays with us at Gary’s place, doesn’t have any of those, doesn’t need them, he says, because he wants to travel light.

Gary noticed that, when Keith left early this morning, and when he drives us to the trail a little later, he can’t stop talking about it. “I am worried about Keith” he keeps saying over and over again. So as we say good bye, I take the poncho Gary found in his home and take off to the woods. It’s one more thing to carry on, but I make sure, that after 8 hours of walking in the rain, as we arrive at the shelter were Keith is staying that night, Keith takes the poncho.

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