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Celestia: Home
Welcome to Celestia
... The free space simulation that lets you explore our universe in three dimensions. Celestia runs on Windows, Linux, and Mac OS X.
Unlike most planetarium software, Celestia doesn't confine you to the surface of the Earth. You can travel throughout the solar system, to any of over 100,000 stars, or even beyond the galaxy.
All movement in Celestia is seamless; the exponential zoom feature lets you explore space across a huge range of scales, from galaxy clusters down to spacecraft only a few meters across. A 'point-and-goto' interface makes it simple to navigate through the universe to the object you want to visit.
Celestia is expandable. Celestia comes with a large catalog of stars, galaxies, planets, moons, asteroids, comets, and spacecraft. If that's not enough, you can download dozens of easy to install add-ons with more objects.
Child Labor Simulation
"Each student then goes on the Internet and carries out research to discover: (a) details of their character; (b) their views on child labour. Each student writes a brief biography of their character and prepares a speech for a debate entitled: "Parliament should pass legislation making it illegal for children under the age of twelve to work in textile factories.""
Ardi casts doubt on idea of a human killer instinct - WSJ.com
Are humans hard-wired to be ruthlessly competitive or supportive of one another?
pinvoke - Icons and pixel fonts
Icons
Quality web icons to designers/developers.
The icons can be used free for any personal or commercial projects.
Road ID® - Road ID™ Personal Identification Gear
Click to Enlarge
ROLL OVER TO COMPARE COLORS
ROLL OVER TO COMPARE VERSIONS
Detailed Comparison: Original vs. Interactive
The Wrist ID Elite just might be the sexiest ID in the Road ID lineup. This sleek ID has you covered on the bike, in the boardroom and everywhere in-between. It's perfect for all of your outdoor activities and knows how to play it cool at formal events. With the Elite, you get valuable peace of mind with a look that’s just right for everyday wear. Yes, we know, it's a bit more expensive. But, when you put it on, you'll know why you spent the extra money. Get your Wrist ID Elite today...your life may depend on it. Available in nine colors and both Original and Interactive versions. It's fully adjustable, so one size fits all.
Version Control for Designers
What have you done for me lately?
Version control, also known as source control or revision control is an integral part of any development workflow. Why? It is essentially a communication tool, just like email or IM, but it works with code rather than human conversation.
Version control
* allows programmers to easily communicate their work to other programmers
* allows a team to share code
* maintains separate “production” versions of code that are always deployable
* allows simultaneous development of different features on the same codebase
* keeps track of all old versions of files
* prevents work being overwritten
git ready » learn git one commit at a time
learn git one commit at a time
scie.nti.st » Hosting Git repositories, The Easy (and Secure) Way
I have been asked more and more these days, "How do I host a Git repository?" Usually it is assumed that some access control beyond simply read-only is involved (some users have commit rights). With access control comes issues of security, and that's a whole other bag of cats. This post is about presenting an answer to this question, without the fuss.
The rest of this article will be a tutorial showing you how to host and manage Git repositories with access control, easily and safely. I use an up and coming tool called gitosis that my friend Tv wrote to help make hosting git repos easier and safer. It manages multiple repositories under one user account, using SSH keys to identify users. However, users do *not* need shell accounts on the server, instead they will talk to one shared account that does not allow arbitrary commands. Git itself is used to setup gitosis and manage the Git repos, which pleases the recursion-seeking orthogonal CS-side of my brain.
Panasonic Youth – Upgrading git via MacPorts
Upgrading git via MacPorts
Git 1.6.1 was released at Christmas, and if you are still on 1.6.0 or lower its well worth upgrading. MacPorts is the way to go for Git on the Mac - the ports team has been awesome in keeping up with the latest versions. Here’s how I upgrade:
ReinH | Git Push: Just The Tip
Today we delve into the world of git push, one of the most often used git tools. git push is typically used to update a remote ref and associated objects based on a local ref – in other words, to push your local changes to an upstream repository – but you can also use it to create or delete remote branches and much, much more! actually, that’s about it.
Install Apache 2 and PHP 5 with MacPorts | 2 tablespoons
Install Apache 2 and PHP 5 with MacPorts
posted October 23rd, 2007 at 7:56 pm by chad
PHP logo
4/2/08 - Added php.ini settings to use the proper MySQL socket at /tmp/mysql.sock.
3/23/08 - After going through these instructions on a new Leopard system, I made a few minor updates. The steps should now work for Leopard as well as Tiger.
While options abound, MacPorts may be the easiest option to configure a local web development environment on your Mac. I'll mention a few of the other options and then share the steps I've used to install Apache 2 and PHP 5 with MacPorts.
Git_Guide - SourceMage Wiki
I want to work on an upstream branch other than "master".
$ git checkout --track -b <local name> origin/<remote name>
Note: this creates a local branch <local name> based on the upstream branch and switches your working copy to that branch.
$ git pull
$ git push origin <local name>
Sometimes you may need to use the following instead of that last commit:
$ git push origin <local name>:<remote name without origin/>
Using VirtualHostX on a local network?
-
I have a solution to automate this in the next release of VirtualHostX, but until then, you can manually setup other machines on your network:
1) Find your machine's local IP address. Not your public IP. It usually starts with 192 or 10.
2) On every machine you want to give access to, using a text editor, open the file "/etc/hosts"
3) You'll need to add entries for each site in VirtualHostX. Each site needs to be on it's own line in the following format:
ip.address.to.your.mac yourdomain.site
So, if your Mac's IP is 192.168.1.1 and you have two virtual hosts called mysite.dev and another.site, you'd add
192.168.1.1 mysite.dev
192.168.1.1 another.site
to /etc/hosts
And that should do it. Make sure you save the file and have your Mac's firewall configured to allow incoming web traffic.
Like I said above, I plan to have an automated solution in place for VirtualHostX 2.0 since this can be a tedious process. In the mean time, feel free to contact me if you have any problems.
DNS Enabler for Leopard
DNS Enabler allows Mac users to set up a fully-functional Domain Name Server on a plain Mac OS X machine with just one click. It is designed to allow a user to set up domain name information quickly using a single window, in the least amount of time.
DNS Enabler provides the interface to allow users to specify name-to-address mappings, as well as their aliases. Additionally, it allows users to set the domain and zone information, like the Domain Name, Host Master's email address, and the Time-To-Live intervals that determine the validity periods for the domain information.
It will generate the appropriate named.conf file, the forward mapping files for each domain, the reverse mapping files for each network, and all the resource and reverse pointer records for the user automatically from the specifications entered.
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