Senthil Murugan's Blog

Free Education–Top 10 websites

MOOCs: Top 10 Sites for Free Education With Elite Universities

MOOC stands for Massive Open Online Courses.  Although there has been access to free online courses on the Internet for years, the quality and quantity of courses has changed. Access to free courses has allowed students to obtain a level of education that many only could dream of in the past.  This has changed the face of education.  In The New York Times article Instruction for Masses Knocked Down Campus Walls, author Tamar Lewin stated, “in the past few months hundreds of thousands of motivated students around the world who lack access to elite universities have been embracing them as a path toward sophisticated skills and high-paying jobs, without paying tuition or collecting a college degree.”

Although MOOCs are the latest trend, not everyone agrees that schools should offer them.  Joshua Kim Insight Higher Ed article Why Every University Does Not Need a MOOC noted that offering free material may not make sense for the individual university.  It may be more important to stand out in other ways.

There may also be some issues for students who lack motivation.  Since a MOOC is voluntary and there is no penalty for dropping the program or lagging behind, there may be issues with course completion.  Although a student may have received an excellent education, there will not be a corresponding diploma.

For those who desire a free education and have the motivation, the following includes the:  Top 10 Sites for Information about MOOCs:

  1. Udemy Free Courses – Udemy is an example of a site allows anyone to build or take online courses.  Udemy’s site exclaims, “Our goal is to disrupt and democratize education by enabling anyone to learn from the world’s experts.” The New York Times reported that Udemy, “recently announced a new Faculty Project, in which award-winning professors from universities like Dartmouth, the University of Virginia and Northwestern offer free online courses. Its co-founder, Gagen Biyani, said the site has more than 100,000 students enrolled in its courses, including several, outside the Faculty Project, that charge fees.”
  2. ITunesU Free Courses – Apple’s free app “gives students access to all the materials for courses in a single place. Right in the app, they can play video or audio lectures. Read books and view presentations.”
  3. Stanford Free Courses –  From Quantum Mechanics to The Future of the Internet, Stanford offers a variety of free courses.  Stanford’s – Introduction to Artificial Intelligence was highly successful. According, “160000 students from 190 countries signed up to Stanford’s Introduction to AI” course, with 23000 reportedly completing.”  Check out Stanford’s Engineering Everywhere link.
  4. UC Berkeley Free Courses – From General Biology to Human Emotion, Berkley offers a variety of courses.  Check out:  Berkeley Webcasts and Berkeley RSS Feeds.
  5. MIT Free Courses – Check out MIT’s RSS MOOC feed.  Also see:  MIT’s Open Courseware.
  6. Duke Free Courses – Duke offers a variety of courses on ITunesU.
  7. Harvard Free Courses – From Computer Science to Shakespeare, students may now get a free Harvard education. “Take a class for professional development, enrichment, and degree credit. Courses run in the fall, spring, or intensive January session. No application is required.”
  8. UCLA Free Courses – Check out free courses such as their writing program that offers over 220 online writing courses each year.
  9. Yale Free Courses – At Open Yale, the school offers “free and open access to a selection of introductory courses taught by distinguished teachers and scholars at Yale University. The aim of the project is to expand access to educational materials for all who wish to learn.”
  10. Carnegie Mellon Free Courses – Carnegie Mellon boosts “No instructors, no credits, no charge.”

Thanks to BDPA Detroit Chapter

"The file you are trying to open … different format than specified by the file extension" while opening XLS (HTML saved as XLS)using Excel 2007, 2010 or 2013

Dear Friends,

Due to various reason, software are saving HTML file as XLS and allowing users to open the file using excel software.

Users are getting the above error message, to avoid this error message, you can add the below entry in registry, so that this warning message will disappear while opening the file.

Excel 2007

Excel 2010

Excel 2013


Thanks to IBM Support Team

How to Create an Execution Plan–SQL Tuning


Autotrace in SQL Developer

This is a step up over the SQL*Plus version. It displays the stats for every step of the plan. So for each operation you can see metrics such as:

  • How many buffer gets it used
  • How long it took to run
  • How many disk reads and writes it did

For more information, please check the below.

Thanks to Oracle  –

IP Block listed by Hotmail/Outlook–removal request format

Dear Friends,

please use this form to submit your IP details to microsoft.

Finding IP Addresses accessing the mail server

I’m wanting to keep only the IP addressees in a huge file that look like this using Notepad++ I can’t figure out a good regex to accopmlish this. Any help would be appreciated.

9/9/2099 09:00 PM | UA: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like 
GeckoChrome/34.0.1847.116 Safari/537.36 | IP:

9/9/2099 03:00 PM | UA: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like
Gecko) Chrome/34.0.1847.116 Safari/537.36 | IP:

Should become


You can use this (check the dotall mode: “. matches newlines”):

find: .*?((?:\d{1,3}\.){3}\d{1,3}\r?\n)|.+
replace: $1

.*? will match all characters until the next IP address (in the group 1)

At the end, when there is no more IP addresses, the first part of the pattern will fail, and .+ takes all the characters until the end. The content of the capture group 1 is preserved.

Thanks to Stackoverflow

How to extend Evaluation Period expired for Windows Server 2012 R2?

After the expiration of evaluation period of Window Server. you will face suddenly shutdown every one hour ! it’s annoying.therefore,in this case,you only have two options:

  • Activate windows by purchasing a new Key.
  • Extend evaluation period.(Simplest & Quickly method).


Therefore, to extend the evaluation period follow the bit mentioned steps below:

  • Open Command prompt as Administrator

Run CMD As Administrator

  • Type the following command “slmgr.vbs /rearm” which reset the licensing status of machine and press enter

reset the licence

  • Restart your server then you will found the evaluation period expired to 180 day




Oracle Apex Community Application

Dear Friends,

The below is the useful information about Oracle Apex, you can get most of the information in this place.


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