Tony S. posted an article on
Please Make a Note
-
Jun 23, 2011, 9:35 pm
A summary of using the maximum entropy principle from information theory to reconstruct a PDF (or other distributions) given a finite number of moments. This is quite useful especially when using the method of moments in population balances or related stochastic transport processes. The document als... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Apr 11, 2011, 6:27 pm
A review of Gaussian quadrature for numerical integration. Discusses Lagrange's interpolation and the theory of orthogonal polynomials.
Download PDF. Comment - Like
Tony S. posted an article on
Please Make a Note
-
Apr 2, 2011, 2:27 am
I do not use EndNote. And most likely never will. But here's an annoyance that you may have encountered while working on your word documents.
Sometimes, in your word document, if you write certain acronyms between parentheses, EndNote may think that this is a reference. To prevent this from ... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Oct 4, 2010, 12:04 pm
A sequence is a set of numbers that can be constructed using a formula known as a recurrence relation. The most obvious of these is the set of natural numbers (integers). How? Start with any integer (positive or negative). To get the next integer, simply add 1!
Some sequences are very obvio... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Aug 18, 2010, 10:18 am
php code can be embedded within html pages within the tags:
However, and depending on the server that you are using, this must be enabled. On apache2, you can edit the .htaccess file to include:
AddType application/x-httpd-php .htm .html
I added this line to the .htaccess on my website... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Aug 16, 2010, 10:16 am
So Picasa has failed to install on my Ubuntu box. The caveat is that it also prevented me to install any other packages and gave the following error whenever i tried to install something:
ubuntu previous installation hasn't been completedI suspected it was Picasa, but to verify, I opened up a termin... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Aug 13, 2010, 10:13 am
The hostname is stored in the file
/etc/hostnameYou can edit that with your favorite editor. I use emacs:
sudo emacs /etc/hostnameYou will also need to match that in
/etc/hosts Comment - Like
Tony S. posted an article on
Please Make a Note
-
Aug 11, 2010, 10:11 am
Open up a terminal and browse to the directory where the multipart rar files are and type
unrar x thefile.part1.rar Comment - Like
Tony S. posted an article on
Please Make a Note
-
Aug 10, 2010, 10:10 am
First, identify the PID for the process that refuses to end. Open up a terminal and type
topTo close top, type
Ctrl + cnow you're back in terminal. To kill the process, type
kill -9 PID
Hope that works! Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 31, 2010, 9:31 am
I've recently succumbed to the unforgiving punishment of continued computer use. I purchased my first computer in 1995. It had an Intel Pentium 133 MHz processor. I don't recall the memory size. It had a 4GB hard disk drive (called Quantum BigFoot). And so began my computing journey. I was inseparab... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 30, 2010, 9:30 am
Charles Reid, a doctoral candidate at the University of Utah and a very good colleague of mine, has kindly agreed to post some lectures from his summer "Scientific Computing Workshop" on PMAN. Charles is not only knowledgeable in all Unix related stuff (Unix, Linux, OSX), but also a very rigorous re... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 29, 2010, 9:29 am
say you're looking for some weird LaTeX symbol but you don't want to go through an exhausting list of possible candidates. You just want to draw that symbol and have someone tell you what the syntax for that is.
Well, Detexify does this exact thing!!! Go ahead and try it (and train it, and by al... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 28, 2010, 9:28 am
Turns out to be quite simple using Google docs! Here are the steps:
Go to Google docs
Create a new form
Customize the form to your liking by filling it with required info (Name, email, website, message...)
To add new items use the "Add item" button on the upper left. Use this to a... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 27, 2010, 9:27 am
If you are using a multicolumn LaTeX class template, then placing two figures side by side so that they spawn the entire width of the page is done by simply using the {figure*} environment
\begin{figure*}
\subfigure{...}
\subfigure{...}
\end{figure*}Voila!
You m... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 26, 2010, 9:26 am
In a previous post, I discussed the proper techniques to integrate an exact total differential. The major point to be drawn from exact differentials is that their parent function is independent of the path of integration. For example, the work done by gravity is independent of the path taken. It onl... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 24, 2010, 9:24 am
This is my second post on logical fallacies in scientific research. Today's subject discusses how the "Appeal to Popularity" fallacy can hinder the research environment. This one in particular is a bit tricky because, at the face of it, an individual may use it as evidence.
Definition: Appeal ... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 23, 2010, 9:23 am
You can use the "limits" class template to obtain machine specific numeric limits. Here's a sample code:
#include
#include
using namespace std;
int main()
{
//print maximum of various types
cout ::max() ::max() ::max() ::max() ::max() ::min() ::min... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 22, 2010, 9:22 am
If you're trying to remote desktop to a computer connected to a wireless router, you'll most likely need to "forward" certain ports to allow this connection to go through. For windows, and if you haven't changed that setting, the default port if 3389. So here's how you can do it in general:
Go to yo... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 21, 2010, 9:21 am
Try:
cat /proc/cpuinfo
There's a lot more to this. You can learn about the /proc directory from this post: http://www.linux.com/archive/articles/126718 Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 20, 2010, 9:20 am
In a previous post I discussed how to create 2D arrays in C. Here's the version for C++. Pointers can be easily used to create a 2D array in C++ using the operator "new" . The idea is to first create a one dimensional array of pointers, and then, for each array entry, create another one dimensional... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 19, 2010, 10:16 am
With the advent of digital photography and the widespread use of digital cameras, it has become very exciting and easy to take photos... that is, lots of photos! Soon enough, your hard disk will be spawned with JPEGs. Whether you are scanning your old prints or importing photos from your digital cam... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 19, 2010, 9:17 am
With the advent of digital photography and the widespread use of digital cameras, it has become very exciting and easy to take photos... that is, lots of photos! Soon enough, your hard disk will be spawned with JPEGs. Whether you are scanning your old prints or importing photos from your digital cam... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 17, 2010, 9:16 am
In this series of articles, I will discuss some of the most annoying logical fallacies that research scientists fall a victim to. I will start with a very common fallacy known as Appeal to Common Practice. As the name designates, this logical fallacy stands in its own right as an insult to logic and... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 16, 2010, 9:15 am
Hypre is a library for solving large, sparse linear systems of equations on massively parallel computers. You can download it from here. Here's my configuration on Mac OSX
./configure --prefix=/Users/USERNAME/pkg/hypre-2.6.0b-install\
--with-MPI-include=/Users/USERNAME/pkg/o... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 15, 2010, 9:14 am
I apologize for this delay. I've attached the parallel heat equation solver to this post. You can download the code from here
http://www.tsaad.net/code/parallel-heat-eq.7zor, separately
http://www.tsaad.net/code/parallel-heat-eq/heat.cpp
http://www.tsaad.net/code/parallel-heat-eq/heat.hPlease note, ... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 14, 2010, 9:13 am
First, you will need a proper gfortran installed on your system. This version (gfortran 4.2.3)worked for me. After installing that download and extract OpenMPI. Here's the config line that I used
./configure --prefix=/Users/USERNAME/pkg/openmpi-1.4.2-install\
F77=gfortran CFLAGS=-m64 C... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 13, 2010, 9:12 am
You can add the total number of posts and comments as a blogger gadget. In your design page, add an HTML/Java Script gadget, and put in the following code:
function numberOfPosts(json) {
document.write('Total Posts: ' + json.feed.openSearch$totalResults.$t + '
');
}
functi... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 12, 2010, 9:11 am
Here's the LaTeX class template that I developed for my dissertation. It is hosted at the University of Tennessee. You can download it from here:
http://web.utk.edu/~thesis/files/ut-thesis-template.zipThe class has some really neat features. It can automatically generate the approval pages for up to... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 11, 2010, 1:38 pm
Try this:Go to "Options" (click the wrench button on upper right)Go to: Under the Hood -> Content Settings -> Plug-insClick on "Disable Individual Plug-ins...Locate the Adobe Acrobat plugin (or any other PDF viewer) and click "Disable"Voila! Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 10, 2010, 12:31 pm
In this post, I will present Euler's derivation of the momentum balance equations for a fluid flow. Please note that I will use modern notation with a few modifications to the original derivation to clarify certain issues. Nonetheless, the core of Euler's derivation is maintained.
Considerin... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 9, 2010, 1:09 pm
I've seen plenty of papers in the literature with equations that are practically unreadable. My main issue is that these manuscripts fail to follow a very simple guide in mathematical notation:If the term in question is a variable, then it should be italicized. All other terms should NOT be ital... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 7, 2010, 8:48 pm
Here's a LaTeX letter template for two print formats. Use the first to print on paper WITHOUT a letter head and the second on paper WITH a letter head.LaTeX letter template for paper without letter headVoila! Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 6, 2010, 1:23 pm
I've gone through several approaches to post math equations on blogger (check my previous posts here, and here). I found that the most effective and stable method is the one based on the CodeCogs server. Here's how it works:Go to the codecogs online LaTeX editorType in your equations LaTeXCo... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 5, 2010, 10:07 pm
Try:background:rgba(r,g,b,alpha-value)Voila!
For example, on this blog, I use rgba(255,255,255,0.8) for the background wrapper. Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 5, 2010, 1:52 pm
Move the following files...\MathType Install Dir\MathPage\MathPage.wll...\MathType Install Dir\Office Support\MathType Commands 6 For Word.dotm...\MathType Install Dir\Office Support\WordCmds.dotTo...\Office Install Dir\Office14\STARTUP Voila! Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 5, 2010, 12:27 am
We start by selecting a spherical control volume dV. As shown in the figure below, this is given bywhere r, θ, and φ stand for the radius, polar, and azimuthal angles, respectively. The azimuthal angle is also referred to as the zenith or colatitude angle.
The differential mass is
We will repres... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 4, 2010, 7:42 pm
Avoid using emotional and vague words. Avoid unnecessary fillers. Be precise, specific, and objective. Define all your words and use quantitative numbers as much as possible. Here's a list:
plenty, very much, a lot, short (define what short is!), long (define that as well!), really, heavy, light... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 4, 2010, 11:47 am
When you advance in your career as a scientist, the choices that you make to accomplish certain research tasks become of crucial importance. If you spend a year collecting data and analyzing in Excel for instance, creating all sorts of plots and customizations, it will be very hard to make the switc... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jul 3, 2010, 6:12 pm
Often times I am faced with the integration of a system of differential equations of the formThis system describes the behaviour of the primitive function "p". In fact, these equations stem from the total differential of pTwo cases arise in this situation. If "dp" is an exact differential, then the ... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jun 22, 2010, 12:49 pm
The equivalent to \subsubsubsection is \paragraph. To have that numbered simply use:\setcounter{secnumdepth}{5}then:\section{} % level 1\subsection{} % level 2\subsubsection{} % level 3\paragraph{} % level 4 - equivalent to subsubsubsection\subparagraph{} % level 5Voil... Comment - Like
Tony S. posted an article on
Please Make a Note
-
Jun 17, 2010, 7:28 pm
I've recently moved to using Mendeley as my main reference management tool. It has some pretty neat features except for a few that keep bugging me. One of those is that Mendeley seems to maintain record of deleted entries in its database and those end up in its BibTeX export. Worst of all is tha... Comment - Like
Recent Discussions
