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Reveille - johnj.com - 14 years ago - eng
Nov. 15, 2011 05:36 NZDT Berthing A4-209, Amundsen-Scott South Pole Station Fire sled next to refueling pit Well, that’ll wake you up nice and quick. We just had a fire alarm which went on for long enough to get everyone out of bed and the fire team half-dressed for action. False alarm, apparently. I’ve had a checkered history with fire alarms here. A few years ago when they were testing out the system, I was on night shift. Of....

Competitions are a great way to get your fans involved around a particular theme or release. They encourage original content creation and tend to be extremely viral due to the high level of self-promotion involved with participating. The infrastructure you choose to throw these contests on should be accessible from any device while also providing a nice aesthetic backdrop to apply your branding. Users should be able to submit, vote, and com..

Today we’re excited to announce a big update to our JavaScript SDK. Aside from improving the existing functionality like authentication, API…

Reveille - johnj.com - 14 years ago - eng
Nov. 15, 2011 05:36 NZDT Berthing A4-209, Amundsen-Scott South Pole Station Fire sled next to refueling pit Well, that’ll wake you up nice and quick. We just had a fire alarm which went on for long enough to get everyone out of bed and the fire team half-dressed for action. False alarm, apparently. I’ve had a checkered history with fire alarms here. A few years ago when they were testing out the system, I was on night shift. Of....

Relax, I’m talking about the Oracle Database kernel here, not the corporation ;-) Here’s a couple of more reasons why not to play around with undocumented debug events unless you’re really sure why and how would they help to solve your specific problem (and you’ve gotten a blessing in some form from Oracle support too): $ oerr ora 10665 10665, 00000, "Inject Evil Literals" // *Cause: Event 10665 is set to some number > 0, causing 1/(v....

Relax, I’m talking about the Oracle Database kernel here, not the corporation ;-) Here’s a couple of more reasons why not to play around with undocumented debug events unless you’re really sure why and how would they help to solve your specific problem (and you’ve gotten a blessing in some form from Oracle support too): $ oerr ora 10665 10665, 00000, "Inject Evil Literals" // *Cause: Event 10665 is set to some number > 0, causing 1/(v....

It’s been quite a fricking awesome weekend - full of work, PC peripherals, and distractions. And I just finished my first 5km run under 25 minutes since my fracture, so the endorphins are going and I feel like writing. Oh, what? You want handy anchor links? Here you go:

For those completely new to web development, Django is a web framework that makes it easier to build web applications with Python. For those that have some knowledge of other web frameworks and Django you may be able to fly through much of the following. Django is a slight modification on the MVC construct which views itself as a MVT Model, View, Template. Django views a website as a project and within it smaller apps are contained. E....

For those completely new to web development, Django is a web framework that makes it easier to build web applications with Python. For those that have some knowledge of other web frameworks and Django you may be able to fly through much of the following. Django is a slight modification on the MVC construct which views itself as a MVT Model, View, Template. Django views a website as a project and within it smaller apps are contained. E....

Drifts - johnj.com - 14 years ago - eng
Feeling a bit run down this afternoon. Got up and decided it was my first “workout” day, working out consisting of twenty minutes of walking since this is still just my fourth day here. Had a nice walk and a bit of a stretch, and then a SHOWER, my first since McMurdo. Feeling pretty peppy, I had decided today would mostly be a day off, to rejuvenate and prepare for the week ahead. I was headed back to my room to practice, and ran into WO Ca....

Drifts - johnj.com - 14 years ago - eng
Feeling a bit run down this afternoon. Got up and decided it was my first “workout” day, working out consisting of twenty minutes of walking since this is still just my fourth day here. Had a nice walk and a bit of a stretch, and then a SHOWER, my first since McMurdo. Feeling pretty peppy, I had decided today would mostly be a day off, to rejuvenate and prepare for the week ahead. I was headed back to my room to practice, and ran into WO Ca....

Drifts - johnj.com - 14 years ago - eng
Feeling a bit run down this afternoon. Got up and decided it was my first “workout” day, working out consisting of twenty minutes of walking since this is still just my fourth day here. Had a nice walk and a bit of a stretch, and then a SHOWER, my first since McMurdo. Feeling pretty peppy, I had decided today would mostly be a day off, to rejuvenate and prepare for the week ahead. I was headed back to my room to practice, and ran into WO Ca....

Yesterday, Mozilla announced the availability of Firefox 10 beta, named Aurora. The version introduces a bunch of new HTML5 features and some of them sound very interesting.

Yesterday, Mozilla announced the availability of Firefox 10 beta, named Aurora. The version introduces a bunch of new HTML5 features and some of them sound very interesting.

Bon Voyage - johnj.com - 14 years ago - eng
Nov. 12, 2011 11:46 NZDT B2 Science, Amundsen-Scott South Pole Station Jens and Freija departing South Pole after 12 months Just said farewell to IceCube winter-overs Freija and Jens on the “flight deck” (outdoor waiting area near the plane… wind chill -65 F). Bittersweet partings for all concerned, I’d say. Their plane is taxiing as I write this. Carlos and Sven take over now as winter-overs for the coming year. This was the f..

Bon Voyage - johnj.com - 14 years ago - eng
Nov. 12, 2011 11:46 NZDT B2 Science, Amundsen-Scott South Pole Station Jens and Freija departing South Pole after 12 months Just said farewell to IceCube winter-overs Freija and Jens on the “flight deck” (outdoor waiting area near the plane… wind chill -65 F). Bittersweet partings for all concerned, I’d say. Their plane is taxiing as I write this. Carlos and Sven take over now as winter-overs for the coming year. This was the f..

Bon Voyage - johnj.com - 14 years ago - eng
Nov. 12, 2011 11:46 NZDT B2 Science, Amundsen-Scott South Pole Station Jens and Freija departing South Pole after 12 months Just said farewell to IceCube winter-overs Freija and Jens on the “flight deck” (outdoor waiting area near the plane… wind chill -65 F). Bittersweet partings for all concerned, I’d say. Their plane is taxiing as I write this. Carlos and Sven take over now as winter-overs for the coming year. This was the f..

A Nicer Guy? - johnj.com - 14 years ago - eng
17:01 NZDT B2 Science, Amundsen-Scott South Pole Station En route to South Pole Been here just over a day now and am settling in. Once I get here it’s easy to settle into a work routine, which makes it harder to do much writing. But I’m still acclimating to the altitude, trying to rest and stay hydrated, and the schedule isn’t too intense so far. Did a debrief today of our outgoing winter-over (WO) scientists, who are leaving t....

A Nicer Guy? - johnj.com - 14 years ago - eng
17:01 NZDT B2 Science, Amundsen-Scott South Pole Station En route to South Pole Been here just over a day now and am settling in. Once I get here it’s easy to settle into a work routine, which makes it harder to do much writing. But I’m still acclimating to the altitude, trying to rest and stay hydrated, and the schedule isn’t too intense so far. Did a debrief today of our outgoing winter-over (WO) scientists, who are leaving t....

A Nicer Guy? - johnj.com - 14 years ago - eng
17:01 NZDT B2 Science, Amundsen-Scott South Pole Station En route to South Pole Been here just over a day now and am settling in. Once I get here it’s easy to settle into a work routine, which makes it harder to do much writing. But I’m still acclimating to the altitude, trying to rest and stay hydrated, and the schedule isn’t too intense so far. Did a debrief today of our outgoing winter-over (WO) scientists, who are leaving t....

Silverlight 5 è in dirittura d’arrivo. L’ultimo aggiornamento del plug-in Microsoft sarà ultimo  in tutti i sensi dato che a quanto pare non ne seguiranno altri. A sostenerlo è ZD-Net per bocca di Mary-Jo Foley, di solito sempre ben informata su quel che succede nei corridoi del gigante di Seattle. Diversi partner e clienti mi hanno detto di aver saputo da fonti Microsoft che Silverlight 5 è l’ultima versione di Silverlight che Microso....

Last weekend was another successful Music Hack Day Boston jam-packed with cool hacks, and hackers alike. We are always excited to get involved, meet new and interesting people, and of course hack!

Last weekend was another successful Music Hack Day Boston jam-packed with cool hacks, and hackers alike. We are always excited to get involved, meet new and interesting people, and of course hack!

So yesterday I was bored and asked my friend what I should do. She replied "I don't know, draw ASCII art or something!" and sitting there with the terminal open I kind of wondered what it would take to write one of those image to ASCII scripts. 20 minutes later I had the following PHP Shell Script! It works by simply sampling the saturation of every X th pixel and mapping that saturation to a character from an array. There is no nearest....

So yesterday I was bored and asked my friend what I should do. She replied "I don't know, draw ASCII art or something!" and sitting there with the terminal open I kind of wondered what it would take to write one of those image to ASCII scripts. 20 minutes later I had the following PHP Shell Script! It works by simply sampling the saturation of every X th pixel and mapping that saturation to a character from an array. There is no nearest....

We at SoundCloud want to build the best sound player for the web, and we want to do that using the Open Web standards. While working on the…

We at SoundCloud want to build the best sound player for the web, and we want to do that using the Open Web standards. While working on the…

NoSQL has long been a trend that many have talked about. While there’s a place for various key-value stores and tools such as memcache and redis, this will address most specifically how NoSQL is attempting to replace a traditional database. I’ve long been a fan of postgres and in general traditional relational databases. In a broad sense traditional databases offer multiple things. RDMS Data guarantees The current major SQL da....

NoSQL has long been a trend that many have talked about. While there’s a place for various key-value stores and tools such as memcache and redis, this will address most specifically how NoSQL is attempting to replace a traditional database. I’ve long been a fan of postgres and in general traditional relational databases. In a broad sense traditional databases offer multiple things. RDMS Data guarantees The current major SQL da....

In my earlier post on Teams and Tools at Heroku , I mentioned how we value engineers’ time; their work has enabled us to build a great platform. As a result of what we’ve built, we’ve had great growth both of our platform and of our teams internally. With that growth inevitably comes different distractions on engineers’ time. Despite how a manager may plan things, engineering work needs long periods of uninterrupted time. To ensure that no....

In my earlier post on Teams and Tools at Heroku , I mentioned how we value engineers’ time; their work has enabled us to build a great platform. As a result of what we’ve built, we’ve had great growth both of our platform and of our teams internally. With that growth inevitably comes different distractions on engineers’ time. Despite how a manager may plan things, engineering work needs long periods of uninterrupted time. To ensure that no....

The Quiet Earth - johnj.com - 14 years ago - eng
2011/11/8 05:01 AM NZDT Christchurch Spring in Christchurch Woke up a few minutes ago and started thinking about a blog post. I would have happily slept more but my body tells me that’s not going to happen. It’s quiet here, with the only sound the faint snoring noises coming from the next room over. I’m at a hotel in an area of Christchurch called Papanui whose distinguishing feature seems to be a shopping district with a mall ....

The Quiet Earth - johnj.com - 14 years ago - eng
2011/11/8 05:01 AM NZDT Christchurch Spring in Christchurch Woke up a few minutes ago and started thinking about a blog post. I would have happily slept more but my body tells me that’s not going to happen. It’s quiet here, with the only sound the faint snoring noises coming from the next room over. I’m at a hotel in an area of Christchurch called Papanui whose distinguishing feature seems to be a shopping district with a mall ....

The Quiet Earth - johnj.com - 14 years ago - eng
2011/11/8 05:01 AM NZDT Christchurch Spring in Christchurch Woke up a few minutes ago and started thinking about a blog post. I would have happily slept more but my body tells me that’s not going to happen. It’s quiet here, with the only sound the faint snoring noises coming from the next room over. I’m at a hotel in an area of Christchurch called Papanui whose distinguishing feature seems to be a shopping district with a mall ....

Note, while the problem below arose in ring theory (specifically, Euclidean domains), the proof itself is elementary, and so the title should not scare away any viewers. In fact, we boil the problem down to something which requires no knowledge of abstract algebra at all. Problem: Show that the ring $ \mathbb{Z}[\sqrt{2}]$ has infinitely many units. Solution: An element of $ \mathbb{Z}[\sqrt{2}]$ has the form $ a+b\sqrt{2}$ for integers $ a..

Note, while the problem below arose in ring theory (specifically, Euclidean domains), the proof itself is elementary, and so the title should not scare away any viewers. In fact, we boil the problem down to something which requires no knowledge of abstract algebra at all. Problem: Show that the ring $ \mathbb{Z}[\sqrt{2}]$ has infinitely many units. Solution: An element of $ \mathbb{Z}[\sqrt{2}]$ has the form $ a+b\sqrt{2}$ for integers $ a..

Note, while the problem below arose in ring theory (specifically, Euclidean domains), the proof itself is elementary, and so the title should not scare away any viewers. In fact, we boil the problem down to something which requires no knowledge of abstract algebra at all. Problem: Show that the ring $ \mathbb{Z}[\sqrt{2}]$ has infinitely many units. Solution: An element of $ \mathbb{Z}[\sqrt{2}]$ has the form $ a+b\sqrt{2}$ for integers $ a..

A collection of must-read startup articles for the first-time entrepreneur. The articles below should give you inspiration and direction for your next startup.

E’ uscita ieri la versione 1.1 Alpha dei Python Tools per Visual Studio, il plug-in open source per programmare in Python con Visual Studio 2010. Migliorie e molte nuove features per la IDE ma la novità più interessante sono senz’altro PyKinect e Pyvot, due librerie che consentono rispettivamente di lavorare col Kinect SDK e di interagire con Excel via Python.

This is a list of my favorite thought leaders in the realm of education reform. You can skim through and individually follow them or you can follow my list.

Recalling our series on Conway’s Game of Life, here is an implementation of Life within Life. Unfortunately, it does not “prove” what I hoped it might, so unless a reader has a suggestion on what this demonstration proves, it doesn’t belong in the proof gallery. But it sure is impressive.

Recalling our series on Conway’s Game of Life, here is an implementation of Life within Life. Unfortunately, it does not “prove” what I hoped it might, so unless a reader has a suggestion on what this demonstration proves, it doesn’t belong in the proof gallery. But it sure is impressive.

Recalling our series on Conway’s Game of Life, here is an implementation of Life within Life. Unfortunately, it does not “prove” what I hoped it might, so unless a reader has a suggestion on what this demonstration proves, it doesn’t belong in the proof gallery. But it sure is impressive.

Heroku is a largely agile company, we work in primarily small teams that talk via api and data contracts. Its also a company comprised primarily of engineers, even product managers often write code. Heroku as a platform drives many of the features not from top down, but from bottom up based on engineers desires or skunkworks projects. There’s many valuable insights into how Heroku runs efficiently for engineering. I’ll be diving into many....

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