2009/05/14

PDF-related software tools

 

It's free, the best viewer I've used ever!

PDF-XCHANGE VIEWER
http://www.docu-track.com/home/prod_user/PDF-XChange_Tools/pdfx_viewer/

 

Wanna create PDF file? Try this one: PDFcreator
http://sourceforge.net/projects/pdfcreator/

 

For Microsoft Office 2007 users, the simplest way to make PDF file is......
http://www.microsoft.com/downloads/details.aspx?FamilyID=4d951911-3e7e-4ae6-b059-a2e79ed87041&displaylang=en

2009/05/12

Scan suspicious file online

http://www.virustotal.com/

 

 

It uses 40 antivirus software to scan your file.

2009/03/03

Warning! websites with a bad intention

 

http://www.theiqquiz.com/

http://youriqquiz.com/

I just click the advertisement beside the Facebook and found it a fun IQ quiz website.  And after I finished ten stupid quiz, it asked me to input cell phone number to get the pin to see the quiz results.  I just did it and input the PIN to receive my scores.  It is immoral that it does not warn users that it's going to CHARGE them. It did not put those important information at the noticeable place, but put it under the FLASH that nobody will scroll to see it.    Though I have made mistake that I did not read the terms and conditions carefully, I think the websites are very very MEAN!   I hope someone or some institutes can deal with this. 

For more information of this crime, please refer:
http://www.viewpoints.com/IQ-Test-of-IQ-Quiz-Online-Scam-review-8e091
http://www.mobilemarketer.com/cms/news/legal-privacy/1540.html
http://www.ripoffreport.com/reports/0/413/RipOff0413932.htm
google it " iq quiz scam complaint.... " you will find more.

 

TRUST NO ONE on INTERNET!

2009/03/01

Disable the navbar

 

 

#navbar{display:none;}

2009/02/28

Three columns template

 

Three Columns Denim Template

This blogger describes how to change the blogger template "Denim template" to 3 columns template very clearly.

2009/02/11

0.1+0.1+0.1-0.3 != 0 ?!!!!!

 

If you type the this question in command line of MATLAB, you'll probably get the answer other than zero.

 

5.5511e-017

The guyes work for MATLAB wrote on their blog and explained why.

Ken & Mike on the MATLAB Desktop

 

And the lady even insists that " it's not an error".  How ridiculous!

Loren on the Art of MATLAB

Hugh-

This is not an error. If MATLAB were built to get that answer to be 0, we’d have to do a bunch of operations to sort the data in the “right” order. How would MATLAB actually know that IS the way the values should be accumulated from the real-world? You can have MATLAB perform calculations in whatever order you wish by using parentheses. Or introduce a function that sorts the data appropriately and then does the sums and differences.

As long as there is no way to perfectly represent some values, floating point calculations are subject to round-off error. As for the other languages, it depends on how the code is written so they get exactly 0. If the constants are built into the program rather than user-supplied at run-time, it’s possible that a C++ compiler will reorder the operations on constants. And Mathematica might be doing the calculations using extended precision (but I don’t know that for certain).

–Loren

Anyway, it seems that no solution will be provided for this "problem", so I'd better keep that in mind if I need to use  if (0.3==0.1*3)  this kind of statement in my program.

What a great team of MATLAB!

2009/02/03

Tips for HD film on Youtube


Just append this string " &ap=%2526fmt%3D22; " to the embed URLs, and then people can watch High Definition film.