Physics Forums - Blogs

Raining

rootX — Sat, 21 Nov 2009 03:51:11 GMT

It's raining in November, and I still haven't bought an umbrella because I am leaving this place in one month :biggrin:.

My Blog

srmeier — Fri, 20 Nov 2009 17:56:54 GMT

Please visit this site to view my blog:

Thanks!

Please post questions in the forums, not the blogs.

mbcx6ml3 — Fri, 20 Nov 2009 16:31:19 GMT

Questions are best asked by posting in the forums, not the blogs.

Redbelly98
Physics Forums Mentor

Up

Leong — Fri, 20 Nov 2009 03:15:56 GMT

Up until this stage, I'm sure you know I can't talk to you again.

Please post questions in the forums, not the blogs.

suryakalpo — Thu, 19 Nov 2009 14:49:01 GMT

Questions are best asked by posting in the forums, not the blogs.

Redbelly98
Physics Forums Mentor

String

Leong — Thu, 19 Nov 2009 07:17:49 GMT

A broken string can never be mended to what it used to be.

Please post questions in the forums, not the blogs.

Phillmcsquaed — Thu, 19 Nov 2009 05:02:16 GMT

Questions are best asked by posting in the forums, not the blogs.

Redbelly98
Physics Forums Mentor

Gravity

a_christ — Wed, 18 Nov 2009 18:47:07 GMT

I FINALLY FOR SURE KNOW WHAT GRAVITY IS - GRAVITY IS THE GLUE THAT HOLDS US TOGETHER. THE ENTIRE UNIVERSE IS HELD TOGETHER BY GRAVITY - IF IT WASN'T FOR GRAVITY CELESTIAL BODIES WOULD HAVE "RUNNED AWAY" FROM EACH OTHER AND WOULD HAVE SPREAD IN THE VAST EMPTY SPACE. IN THE HUMAN BODY THERE ARE THOSE PROTEINS (LAMININS) THAT HOLD THE BODY PARTS TOGETHER AND PREVENT THE BODY FROM FALLING APART - THE GLUE THAT HOLDS THE HUMAN BODY TOGETHER, IN A SIMILAR WAY (BUT OF COARSE NOT IN A PROTEIN-WAY, AND MOST LIKELY NOT EVEN PARTICLE-WAY) GRAVITY IS THE GLUE THAT HOLDS THE UNIVERSE FROM FALLING APART!!! HOW COOL OF A BLUEPRINT IS THIS? HOW COOL OF AN IDEA?!!!

It's

Leong — Wed, 18 Nov 2009 03:39:12 GMT

It's really sad that only now i realize that you love yourself most.

Mission Improbable

Borg — Tue, 17 Nov 2009 16:28:26 GMT

Today, after seeing one too many excursions in the code that I'm working on, I decided to start showing some of what I'm having to read through in my current project rather than continue posting them to my original thread Worst coding ever - what to do?.

Today started off with this innocent email to a coworker:

Me: Believe or not, this wasn't my comment.

ParentID = MathUtil.getInteger(0); // Yuck

Coworker: Is that an overly complex way of writing ParentID = 0; ???

Me: Yes. They really like the MathUtil stuff. It's all over the place.

Coworker: Did they write that class?

Me: Let me check.

What I found was the following code. The getInteger() method was retrieving a pre-built Integer from an array in what looks like a hair-brained effort to save memory by not creating a new Integer.

public class MathUtil {
private static final int NUM_CACHED_INTEGERS = 256;

private static Integer[] arrCachedIntegers;

static {

arrCachedIntegers = new Integer[NUM_CACHED_INTEGERS];

for (int i = 0; i < NUM_CACHED_INTEGERS; i++) {
arrCachedIntegers[i] = new Integer(i);
}

}

public static Integer getInteger(final int i) {
return ((i >= 0) && (i < NUM_CACHED_INTEGERS)) ? arrCachedIntegers[i] : new Integer(i);
}

}

valuable info.

despair33 — Sat, 14 Nov 2009 15:29:06 GMT

learned a great deal about how a tattoo machine works on this site. believe it or not I study the forum for about an hour! then I built a tattoo machine ! works great, any one that wants to converse on this subject further, please feel free!

Gauss elimination algorithm

Dafe — Fri, 13 Nov 2009 13:23:33 GMT

Under construction

There

Leong — Fri, 13 Nov 2009 11:27:18 GMT

There are those who will be kind to you to get your support. They know they will need it one day. They are also will be the ones that will sacrifice you first to get what they want.

test...

farleyknight — Sat, 07 Nov 2009 20:55:21 GMT

testing this out..

First-order differential equations.

lincs-b — Fri, 06 Nov 2009 14:13:47 GMT

Computer has just wiped this post!:grumpy:
I have finished this unit, it basically consisted of;

A revision of the basic differentiation I have previously studied.

Brief look at the logistic equation and a very basic population.

General and particular solutions.

Initial value problems.

Errors.

Direction fields(need mathcad to fully complete this).

Euler's method.

Direct integration.

Separation of variables.

Linear first-order differential equations and the integrating factor method.

No major problems or confusions so far. Next unit is second-order differential equations.