Difference between revisions of "Scilab/C2/The-amazing-resource-of-Scilab-Textbook-Companion/English"
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| − | | So let us see more about it students are good in coding, but not with documenting but India has about 10 Lakhs engineering students every year. | + | | So let us see more about it students are good in coding, but not with documenting |
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| + | |but India has about 10 Lakhs engineering students every year. | ||
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| − | |what is the inverse problem ask the student to write code for existing documents okay for student of course textbooks are the best documents. | + | |what is the inverse problem ask the student to write code for existing documents |
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| + | | okay for student of course textbooks are the best documents. | ||
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| − | | let me click this there it is example 2.1.09 So you can reach this directly and notice that it has code after code which is not given in the book. | + | | let me click this there it is example 2.1.09 |
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| + | |So you can reach this directly and notice that it has code after code which is not given in the book. | ||
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| − | |Now I am going to ask you quiz suppose I increase the gain of this transfer function lets go to 5000 okay that's right you can actually edit this page | + | |Now I am going to ask you quiz suppose I increase the gain of this transfer function lets go to 5000 |
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| + | |okay that's right you can actually edit this page | ||
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| − | | | + | |Okay what do we do if the book is not covered |
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| + | |you propose or you ask a smart classmate in your class that to do this for you | ||
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| − | | My question to you is, So for that 1 percent of the students should we used some other software that will tax all the 99 percent of the students. | + | | My question to you is, So for that 1 percent of the students |
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| + | |should we used some other software that will tax all the 99 percent of the students. | ||
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| − | | | + | |All companies can also use Scilab absolutely free of cost and of course this useful for the people all over the world |
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| − | |here is the book by Coughanowr which I used when I was a student I said hey you know I have used this book let me view this example. | + | |here is the book by Coughanowr which I used when I was a student |
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| + | | I said hey you know I have used this book let me view this example. | ||
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Revision as of 17:55, 15 April 2019
| 00:05 | So let me go to another solution that we came up for this problem |
| 00:12 | that good documents are missing that solution is called Textbook Companion or TBC in short. |
| 00:21 | So let us see more about it students are good in coding, but not with documenting |
| 00:28 | but India has about 10 Lakhs engineering students every year. |
| 00:33 | Can we use this students to create documents. |
| 00:37 | We need documents we are short of documents, unfortunately students don't like documentation even if they are good in coding. |
| 00:49 | So how do we solve this problem. We have lots of students who can do coding but we want documentation. |
| 00:55 | So we decided to address this by solving the inverse problem. |
| 01:01 | what is the inverse problem ask the student to write code for existing documents |
| 01:09 | okay for student of course textbooks are the best documents. |
| 01:15 | So we said ask them to write Scilab code for solved example of standard textbooks. |
| 01:24 | Notice this solved example we are not talking about unsolved problems. |
| 01:29 | Solved examples good textbooks give every step step by step explanation and solution. |
| 01:37 | One can implement in Scilab and verify scilab code line by line and any good student should be able contribute. |
| 01:49 | So this is how we started if they do for it for all solved example of a book |
| 01:56 | you get one text book companion and we pay Rupees 12000Rs for 1 textbook companion as honorarium. |
| 02:08 | We also give certificate and we also give link for it. |
| 02:12 | As matter of fact there is one student from IIT Madras he wrote to us saying that thanks to this textbook companion |
| 02:22 | he got an internship in a Japanese company So he was very happy about it. |
| 02:28 | funding for this comes from the funds the grant that we received from national mission on education through ICT MHRD. |
| 02:38 | which has been very generous in supporting this activities. |
| 02:42 | So I would like to invite all the students to benefit by this to contribute to this and also to use this. |
| 02:50 | How does one used it I am going to explain shortly okay 1000 college student and faculty contributed. |
| 02:58 | This students came from all over India all parts of India 600 textbooks were covered and 70,000 example were coded. |
| 03:09 | If you assume that there are 100 examples in a textbook then there will 60,000 |
| 03:15 | some text book have actually more than 100 examples so we have 70,000 example coded. |
| 03:23 | You can download this textbook companions for offline use so let me click this so this Scilab.in |
| 03:32 | On the left hand side so this the website that we have created and we support at IIT Bombay. |
| 03:47 | By the way the software Scilab is not created by us Scilab is infact we have given a disclaimer also that it's ofcourse |
| 03:56 | we have said that its trademark of Inria and Scilab Enterprises and it has been now bought over by a company. |
| 04:07 | and I will show the link for that here but let's come here lets come back to the page and |
| 04:29 | let's go to textbook companion project and you have something called completed book. |
| 04:27 | Let me click this you can see that there are 594 books that have been completed so it has if I just scroll down |
| 04:40 | You will see that there are indeed 594 books here it is. |
| 04:47 | It's possible to get book according to specialization so let me do that instead of choosing all categories |
| 05:03 | let me choose electrical engineering for example and in that let me choose there are more here signal processing. |
| 05:20 | now if you go through this you see that in signal processing alone there are 17 books |
| 05:26 | So this is very popular book by Proakis and Manolakis DSP. |
| 05:31 | so let me click this and it's says that download codes notice that we are not giving a book |
| 05:40 | we are only giving scilab code to understand that code you need the book as a result. |
| 05:47 | This is a true textbook companion it only give Scilab code |
| 05:53 | It doesn't give the book we cannot copy the book and distribute that will be violation of copyright we don't do such illegal things. |
| 06:03 | so here, if you click this you can download entire Scilab code. |
| 06:11 | if you click here you can get the PDF lets click this and see what it has so it's downloaded here. |
| 06:19 | so here you are this is created by Prof Senthilkumar from IRTT in Erode he is a college teacher |
| 06:29 | and let's go down So it has all the example by chapter. |
| 06:39 | You also have it in terms of example number so for example if you want to say exponential decreasing signal example 2.1.09. |
| 06:52 | let me click this there it is example 2.1.09 |
| 06:59 | So you can reach this directly and notice that it has code after code which is not given in the book. |
| 07:10 | what is given in the book is not reproduced here as a result there is no copyright violation at all as matter of fact. |
| 07:19 | It's other way around we are here helping authors of book by giving scilab code. |
| 07:27 | There may be authors who may not given any code with there book |
| 07:32 | but we have given scilab code and we have given it for 600 close to 600 books infact 594 as of now. |
| 07:41 | and there are some more book in pipeline those are undergoing under review revision and so on and so-forth |
| 07:51 | okay let me just see we have anything else here. |
| 07:56 | We can download code for an entire book or chapter let me show you So here I showed how to download a PDF version |
| 08:08 | let me close this we are back in the download course that we saw earlier |
| 08:17 | So instead of Download PDF if you download here you will get all the Scilab code as a zip file |
| 08:25 | Instead you can say that let's open discrete time signal and system chapter 2 let's choose an example. |
| 08:45 | let say exponential increasing decreasing signal here is a code |
| 08:56 | so I don't have to download the entire book I have I can choose a chapter |
| 09:04 | If I click here and download I will get the zip file for that chapter only |
| 09:14 | Instead I can say that I don't want it for whole chapter there are too many things |
| 09:18 | I get confused I want scilab code for only one example So I have selected this |
| 09:26 | So let me click this let me show in Finder okay I ran it you see the output okay |
| 09:51 | so it is possible to do that let me close this So as I told you earlier. |
| 10:02 | you can download the code for entire book or a chapter or an example |
| 10:09 | So which is very useful because you can just go to example that you like download only that code run it test it. |
| 10:17 | Now I am going to give a demo of scilab cloud on GARUDA so here is the link let me click this So let me demonstrate it |
| 10:31 | let me choose once again electrical engineering I will choose control system |
| 10:43 | I will choose B.C Kaou Frequency Domain Analysis see how it is organised |
| 10:53 | First the main category than subcategory in that what is the name of the book and what is the chapter and what is the example |
| 11:04 | I want to choose bode plot the moment I selected I get the code here |
| 11:12 | so this is written by some student one of your friend from across the country. |
| 11:19 | So lets execute this so it gives bode plot you can download if you want |
| 11:28 | lets close it and here its result let me zoom it little bit okay you can actually see that. |
| 11:38 | Now I am going to ask you quiz suppose I increase the gain of this transfer function lets go to 5000 |
| 11:51 | okay that's right you can actually edit this page |
| 11:55 | So I have change this from 2500 to 5000 |
| 12:00 | Now If I do that what will happen to gain margin and face margin. |
| 12:05 | I want you to note down gain margin is 14 Face margin is 31 |
| 12:11 | If I increase the gain what will happen to this system lets go ahead |
| 12:19 | So this goes to GARUDA cloud which is hosted in Banglore Sydac let me close this. |
| 12:28 | yes if you guess it correct the margins will come down 14 has become 8 and 31 has become 17 |
| 12:42 | so it is possible for you to try out all the 70000 example on the cloud. |
| 12:51 | So how do we use this TBC as a documentation |
| 12:56 | what do I mean by that supposing you want to know how to use scilab for the first four year transform because you have in your course. |
| 13:05 | So open the textbooks there must be example that shows how to solve first four year transform. |
| 13:14 | How to implement first four year transform. |
| 13:18 | So that example is given you got to that textbook companion in Scilab as 600 books are covered most likely your textbook is also covered |
| 13:29 | you go to that chapter particular example and open the scilab code. |
| 13:36 | It tells you how first four year transform is done. |
| 13:40 | Okay what do we do if the book is not covered |
| 13:44 | you propose or you ask a smart classmate in your class that to do this for you |
| 13:52 | and that person can create textbook companion on that book and the problem is solved. |
| 14:00 | okay It can be used as documentation as I mentioned It can be used for what if studies |
| 14:07 | like I mentioned for example like we did for example increase the gain by 2 |
| 14:15 | you may want to reduce the friction factor by 10th. |
| 14:21 | you may want to change the bandwidth of some communication channel and so on and so forth. |
| 14:27 | So its very easy if you are a faculty member you are teaching a class just project this |
| 14:34 | and then you can just do it online ofcourse you need internet connection. |
| 14:40 | If you don't have internet connection use the offline version that I showed you little while ago |
| 14:46 | it is ofcourse useful for students also. |
| 14:49 | You want understand how a particular topic is covered you want to improve it you can do that as a matter of fact. |
| 14:57 | I believe that this alone that is textbook companion alone is useful for more than 40 lakhs engineering students |
| 15:07 | who are in our colleges in anytime for them scilab is more than enough. |
| 15:14 | It is only for very small fraction of student who may want extra things |
| 15:18 | Who may want extra things which may not be available in Scilab. |
| 15:23 | they might say they want to use some other software. |
| 15:25 | My question to you is, So for that 1 percent of the students |
| 15:32 | should we used some other software that will tax all the 99 percent of the students. |
| 15:38 | That's why I said use Scilab wherever possible and that Scilab is good enough for 99 percent of the students like |
| 15:46 | we demonstrated for the remaining 1 percent of the application. |
| 15:50 | Use whatever software whether it is opensource or commercial |
| 15:54 | whatever it is but don't impose commercial on the 99 percent of the student who can get by with scilab. |
| 16:03 | It is also true for industry what how many companies solve ex-chattering all the time |
| 16:13 | very rarely do they solve such problem for most of them. |
| 16:18 | What is available in scilab is more than enough and it's absolutely open source. |
| 16:23 | All companies can also use Scilab absolutely free of cost and of course this useful for the people all over the world |
| 16:34 | Imagine this is something created by us by our students |
| 16:40 | By who are funded by our Taxpayer made available to whole world that's the beauty of opensource software. |
| 16:49 | you create good product and share it and lots of people can benefit by that. |
| 16:56 | just like Scilab was created by somebody and left it as open source for all our students to benefit |
| 17:03 | we also reciprocate in this manner there is another very nice thing that we have created |
| 17:10 | On top for this textbook companion code search let me show you. |
| 17:15 | We click this link if you click this it comes here once again it is in scilab.in website |
| 17:22 | how did I reach here search TBC code search this what I find. |
| 17:28 | So how do I use it when you know need to know the name of the command |
| 17:34 | How do I locate the name of the command I do google search for example |
| 17:41 | I wanted to set a problem in partial fraction in Scilab I had forgotten the command |
| 17:50 | I had forgotten the syntax so I said partial fraction Scilab |
| 18:01 | So very first link is PFSS So I know the command I found the command name now how do I find example |
| 18:12 | I have had very bad experience of trying to get working example in the past |
| 18:20 | and I do a google search I get lots of hits 100,000 hits but not useful one. |
| 18:29 | I have to search one after another for working code but we have solved the problem in our code search |
| 18:38 | Remember the command PFSS so I come here and I searched PFSS I search it says 140 results found where are this from remember. |
| 18:57 | I told you that there 70,000 examples that have been coded by your classmate student across the country. |
| 19:06 | they have made available out of 70,000 example 140 of them have used PFSS. |
| 19:15 | The first one is by this circuit analysis book let me go down here is the book by Ashok here is the book by Babu |
| 19:36 | here is the book by Salivahanan here is the book by Manke you keep doing it until you like a book that is displayed. |
| 19:48 | here is the book by Coughanowr which I used when I was a student |
| I said hey you know I have used this book let me view this example. | |
| 19:59 | It immediately takes me to the scilab oncloud that we have seen before |
| 20:06 | This is example 2.4 in that book and if you see here the notice that PFSS. |
| 20:15 | So all I have to do is execute and I get the result. |
| 20:23 | only denominator is displayed that is because of numerator there is a semicolon |
| 20:28 | let me deleted let me run it and I get numerator also displayed. |
| 20:36 | You can see the partial fraction is with a denominator x-2 this is x+1, x-1 and so on. |
| 20:42 | So if I don't like this I can modified it re-run it I can get example and so on. |
| 20:48 | So this is extremely useful for faculty members if they want to set problem for lab exam final exam. |
| 20:56 | whatever it is and you can do this for all kinds of application |
| 21:01 | ofcourse it will help you to identify example for the command that you want to find |
