I just wanted to let everyone know that we recently added some interesting new packages to the Application Center. These packages had been available as third party products. Now, the authors have chosen to make these products freely available to the community through the App Center. Follow the links below to take a look.

Harmonic Analysis

Structural Mechanics

Quaternions

FuzzySets

One of the best things about growing up in the “Hood” is that it feels really good when you leave. I grew up in a neighborhood called Downsview in Toronto whose claim to fame used to be it was the home to the DeHavilland Aircraft company but today is more associated with ongoing issues of crime, poverty, and many other urban illnesses. So every time I hear that someone from the Hood did something great, I take notice and I take special pride. This is the story about...

In this post I'll introduce is a nice visual test of randomness from signal processing. The main idea of this test to look at how a random sequence correlates with itself.

I have just had my first scientific publication (Journal of Multi-Body Dynamics 2010 Vol24 No K2) and I thought I should include the acknowledgement here

 “The development of algorithms in Maple was assisted by the advice from the MaplePrimes forum including John Fredsted who provided an initial coding idea for automated detection of plane division”.

                ...

An example of the magic of java. It has an excellent widget toolkit too! Study the beautiful image below for an example of what it can accomplish.

When selecting Plot > Plot Builder > Options the gui hanged like this with no way to restore the program, the x buttons had no effect, and no other input had an effect. I was left to close the process and lose my changes to the .mw file. It's running on XP 64-bit.

It's been a while since I wrote one of these random posts, but I still have a couple more I wanted to write.  In this post, I want to describe one of the tests used in the paper that initially inspired this series of posts: the Wald-Wolfowitz runs test.  This test is interesting in that it does not test for uniformity

Reputation plots seem to be broken at this time. There are just blank spaces, on pages where they'd normally appear.

I suggest that, if possible, the database or site-crawling used for Mapleprimes Searches not store pages ending in "/feed". It just adds to the chaff in search results.

I'd submit this as a Software Change Request, if there were a Mapleprimes checkbox on the form.

Many badges on this site will not get used for years if not decades, given the trends to date in site participation.

The suggestion has been made before. Why not rethink the criteria?

On a related note, I wonder how this Post became the first (and so far only) one to get over 1000 distinct views. (Was it imported into the "new V.2 of Mapleprimes from one of the separate and...

Why haven't MaplePrimes had the Internet icon? This small picture is the visiting card of a site. Maplesoft, Wolfram, and WolframAlpha have had the ones.

A new edition of Maplets for Calculus  (M4C) is now available.  M4C v1.3 is a collection of 129 maplets for calculus students and instructors.  The 35 new maplets fill in some gaps in the coverage of precalculus and single variable calculus and begin to address multivariate topics. Each maplet provides a customized graphical user interface (using 2D and 3D graphics and animation) to provide immediate, step-by-step guidance through an endless supply of random ...

I would like to pay the attention of the MaplePrimes users
to a Robert Chero application.
This is a Maple package on graphics, which can be implemented in Maple as a usual package.
It  has community rating 4.5 stars. This package can be downloaded from http://www.maplesoft.com/applications/view.aspx?SID=1671.
It was submitted in 2005 when MaplePrimes started. Because of this reason this...

A sign of a very successful period of work is the tally of how many email messages I’ve written that start with … “First, let me apologize for the delay in my response…” Yes, if you are the recipient of one of these notes from me, you’re probably more annoyed than pleased that I’m finding lots of very interesting things to fill up my ever-shrinking Outlook schedule. It’s been one heck of a summer, and I’m behind on countless...

In examining ODE models containing parameters I don't like to assign values to these, but use the form

param:={a=2, b=7};
and then
eval(expression, param);

This works well. There are situations, however, where this method can be cumbersome.
This would be the case in a situation like this:

plot(a*sin(x),x=0..b);

You could do

plot(op(eval([a*sin(x),x=0..b],param)));

But maybe an operator having a syntax similar to 'assuming' could be useful.

I came across a website that tracked website usage.  I decided to see if Maplesoft existed there in the top million.  To my surprise, it did!  It may not by all means be useful but it is interesting.  The size of the icon is dependant on the popularity  http://nmap.org/favicon/?q=www.maplesoft.com

I also dedided to check out where our competitors stand.  Interestingly...