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September 2009

August 2009

A Lesson In Timing Attacks (or, Don't use MessageDigest.isEquals) | codahale.com

by karlcow

Timing attacks are pretty horrible from the perspective of someone trying to write a secure cryptosystem. They work against a programmer’s best instincts—don’t do extra work—to give an attacker with access to a Statistics 101 textbook a good solid grip on your application’s guts.

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July 2009

May 2009

April 2009

Twitter-Streetart: This demonstrates perfectly just how stupid and pointless twitter is! | Nerdcore

by karlcow

Twitter-Streetart: This demonstrates perfectly just how stupid and pointless twitter is!

twitterstreetart

Twitter-Streetart von Questionmarc (via Urban Prankster) mit einem bemerkenswerten Kommentar darunter.

Das ist schon sehr, sehr lustig. Es ist ja nicht nur so, dass ein paar Journalisten Twitter nicht verstehen und darauf rumhacken. Es ist auch so, dass sobald man irgendetwas über Twitter schreibt, steht mindestens einmal der Kommentar „Dieses Posting ist der perfekte Beweis dafür, wie unglaublich belanglos und banal Twitter doch eigentlich ist.“ Jetzt könnte man sich ja denken, diese Twittmeckermentalität wäre ein deutsches Phänomen – da sah ich obige Streetart und darunter der Kommentar „This demonstrates perfectly just how stupid and pointless twitter is!“ Von wegen deutsch, das ist schlicht ein mentales Filterproblem der Rezipienten. Wenn ich die Worte „Fashion“ oder „Ballett“ lese, dann lese ich gar nicht erst weiter und ich schreibe erst Recht nicht einen Kommentar wie „Dieses Posting ist der perfekte Beweis dafür, wie unglaublich belanglos und banal Ballett doch eigentlich ist.“

Ich glaube, dieser Satz offenbart die komplette Absurdität solcher Kommentare. Geht auch so: „Dieses Posting ist der perfekte Beweis dafür, wie unglaublich belanglos und banal Blogs doch eigentlich sind.“ Bullshit. Ich kaufe mir auch keine Geflügelzüchtermagazine und beschwere mich dann, dass diese voller Geflügelzüchtercontent sind. Wenn man sich gerne und ausschließlich lange Abhandlungen zur Außenpolitik von Papua Neuguinea durchliest, wird man wohl schwerlich ein Fan von Twitter. Aber dann: Don’t fucking read it!

Ansonsten empfehle ich immer noch Julies Anleitung zum Glücklichtwittern: Twitter ist unnütz.

[update] Von Jeriko grade in den Kommentaren gepostet, auch sehr schön:

it’s a lesson in how the future of music is working -

fans are literally (and i mean that….literally) lining up at the signing table after shows and HANDING me cash, saying “thank you”.

i had to EXPLAIN to the so-called “head of digital media” of roadrunner australia WHAT TWITTER WAS. and his brush-off that “it hasn’t caught on here yet” was ABSURD because the next day i twittered that i was doing an impromptu gathering in a public park and 12 hours later, 150 underage fans - who couldn’t attend the show - showed up to get their records signed.

no manager knew! i didn’t even warn or tell her! no agents! no security! no venue! we were in a fucking public park!

life is becoming awesome.

March 2009

Flash - Incredibly realistic coffee smoke effect

by Spone
I drink good coffee every morning. Today, coffee is one of the most popular beverages worldwide, so I have decided to make and show you how to create incredibly realistic coffee smoke effect. Using this very advanced and realistic effect, you will see how to draw smoke shape, how to animate it, how to convert it into a Movie Clip Symbol, how to apply alpha effect on it and much more. You don't have to use action script code to make this lesson. Let's go!

February 2009

Database versus files for Images at Spindrop

by Xavier Lacot
Dave gives his feedback on a long-debated developement topic : storing files in database or on the filesystem. "I had been serving images via the database. Immediately when I switched to the filesystem I saw a huge benefit. Not just a drop in database connections, but overall “zippiness” in the site. We’ll see how well this performs in the real world, but I am quite sure that I learned my lesson." All this makes sense : files are not data, they are just files. A filesystem is designed for hosting files. A database is designed for hosting data. Don't mess things.

January 2009

December 2008

(Animation)Shooting fireball*Updated*

by sylvainulg
another (pixel) animation lesson by ben2theedge << there are two rules you MUST remember when animating: 1: Bodies in motion tend to stay in motion, and bodies at rest tend to stay at rest 2: Every action causes an equal and opposite reaction For almost any animation this is all the physics knowledge you need. You can make an animation more or less "stylized" by exaggerating or downplaying these laws. >>

November 2008

Learn Japanese

by jpcaruana & 6 others
JapanesePod101.com is an innovative, fun, and easy to use language learning system that is designed to get you speaking Japanese from the very first lesson. Learn Japanese at your own convenience and pace with short, effective, and fun audio podcast lessons and a comprehensive, state-of-the-art Learning Center that provides you with the tools to take your Japanese to the next level!

October 2008

TeachingAmericanHistory.org

by knann
Excellent site for high school social studies- original source documents, podcasts, lesson plans, summer institutes

Arduino Tutorial - Getting ready

by Neewok

This lesson won't teach any electronics, really. Its more for making sure that everything is setup and ready for the future lessons. It will verify the Arduino is working as intended and that the computer you are using is compatible.

September 2008

July 2008

June 2008

Into the Book: Teaching Reading Comprehension Strategies

by knann
This is an outstanding resource.... Into the Book is a reading comprehension resource for K-4 students and teachers. We focus on eight research-based strategies: Using Prior Knowledge, Making Connections, Questioning, Visualizing, Inferring, Summarizing, Evaluating and Synthesizing. Your class can watch our engaging 15-minute videos, and try the online interactive activities. Behind the Lesson provides teachers with information and teaching resources for each strategy. Watch our 10-minute professional development videos, and explore the Web site for lesson plans, video and audio clips, downloads, and more.

Wordle: using word clouds in a lesson

by knann
Nice example of how to use wordle in the classroom as a pre-reading strategy.

Inventors of the Industrial Revolution

by knann
Interactive site about Inventors of the Industrial Revolution. Good for DI. These interactive lessons will help students grasp the background and impact of the inventors of the Industrial Revolution. The activities include a timeline and some basic facts so students build a context of historical events and every day life in the time period. The Invention information and activities are divided into categories: Agriculture Textile Steam and Steel Transportation Technology These categories span nineteen pages of activities, followed by an interactive quiz. Some invention pages and the About page include links to outside sites (with an arrow and link icon) for further investigation. These sites open in a new window so you can visit them at any time in the course of a lesson without losing your place in the activities. Requires flash.

May 2008

March 2008

THE AXE EFFECT

by oqdbpo
AXE AXEエフェクトってなんだ!? AXE フレグランスボディスプレーのブランドオフィシャルはここです! 夢のようなモーニングコールをお届け、AXE WAKE-UP SERVICE INCがサービスしまくってます。 Contents Description AXE WAKE-UP SERVICE INC. 毎朝ゴキゲンにAXEをスプレーするためのモーニングコールサービス。当サービス自慢のスタッフたちがいろんなモノ起こしちゃうぞ♪ AXE LASER あなたのまわりにも、きっと“THE AXE EFFECT”なシーンがたくさんあるはず。とっておきの一瞬を気軽にケータイで撮って送ってみてください。 AXEBUSTERS ヤキモチ焼き5人組の特殊部隊AXEBUSTERS。そんな彼女たちをキミはソノ気にさせることができるか?!「まじめなアノ子をソノ気にさせる」AXE VICE 新登場!スペシャルゲームコンテンツ! THE AXERCISE さまざまなシーンに合わせた、AXEのより効果的なスプレーの仕方を特訓するスペシャルプログラム。アクササイズ! 美人アクササイズトレーナー ビリヤーナ・ペトロヴィックが魅せます! THE LESSON 5人娘とAXE体験!AXEの使い方を先生がやさしく伝授します。 MOBILE ケータイもあります。 AD GALLERY AXEのCMを逃さずチェック。

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