Good day, Dr. Mathivanan Ponnambalam. I'm Arjun. I've had a look through your background and your professional record. I'm interested in hearing more about your work and how you see yourself fitting in here with our faculty. Ready to start?

I'm Doctor P Madhavan. Can I? Can I speak?

Good morning.

Good morning, Professor Madhavan. Please go ahead and introduce your professional journey in academia.

OK, thank you. I am Doctor P Madivan and phone number working as an Assistant Professor selection grade.

That will show with the Peram Chennai campus. I've been working here from 2021 till day.

I'm working in EC department. Previously I've worked in streaming restaurant, College of engineering technology, engineering college. So as an assistant professor there I have worked for one year. Then before that I worked in velomal engineering college for nearly eight years and nine months as an assistant professor.

I completed my UH PhD in the year of 2020 under the guidance of Doctor A Balaji Ganesan, Sir.

He's a research Dean of Velomer Engineering College and the topic of QR code based stego crypto technique then.

During this period, we are being collaborated with IIT Madras and have been guided by Doctor Parnival Ramosa.

Uh, on behalf.

Come, come here, come again.

Any. Any.

Help.

Yeah, yeah, yeah, I will be OK. So now.

I, I have not completed my full, full introduction about my professional career. So that's what I've been taking some bit. OK, fine. I will be telling about my.

Teaching experience During my LML, I have been working for eight years and nine months. During that period I've been taking subjects like signals and system electromagnetic fields.

And digital signal processing and those are problematic subjects and it is one of my favorites. Then when I come to SVC, the same subject the peoples find difficulty have been handling those subjects in Steve Ingress for College of Engineering. And I have been doing the same kind of subject and teaching it for one year. Then now when I come to move to.

Amrita Vishwavidyapridam, I've been here for three years, three years and.

Nearly four months I completed SO here.

I have been taking subjects like computer, hardware, system, machine, shell and signals signals.

Hardware essentials. Then I will be taking DSP. This is signal processing. Then I'll be handling image processing. Currently handling image processing too. Then when I come to teaching, I've been really interested to do a lot of projects with students. Now recently we are going to file 4th patent.

With students. So this 4th patent is going to be filed within this month. The 11 patent has been published and the other two have been submitted. 1 is another one is filed, another one is going to be published, The next one is going to be submitted to the Patent Office. The next one we are drafting it OK and one the the published patent we are now working on the model of it. Then when I come to my research background, I've been published nearly.

With in collaboration with what I say.

UH-13 SCA Scopus index to be journals, then uh summon conferences, then one uh non SCA paper that is corpus indexed. OK.

So these are my and I've been my area of interest is going to be chaos based image encryption system. We have we have developed lot of encryption systems starting from during my PhD I started developing a model.

Uh, for remote health monitoring system, uh, in that case, uh, what I have done in the sense to have a effective and remote diagnose process, we embedded, uh, what is that patients information like age, sex, temperature, all the physiological data inside the ECG signal and sent to the remote efficient for the faster diagnosis process. So what happened in the sense the immediate in our first work?

We have converted e.g., ECG signal into image. So the size of the data which is embedded inside the image is going to be very limited. So, uh, what, what happened in the sense when I come to, uh, the size of data is limited. Uh, it, it does not sounds good because the doctors request more information about the patients patient for remote diagnosis process. So we have moved on to the next level now of improving my, uh, embedding capacity, OK, without affecting the robustness.

Of my image so slowly we are doing that process and the 5th work what I've done in the sense it is so found to be somewhat good. It is something called Chicago crypto technique. Say for example I'm having a patient image inside the patient image we will be having both ECG signal as well as a physiological data like what is that blood test during test on the patient ID patient all the records of the patients is also important inside the image and it is sent to the remote physician so that.

And able to able to do the diagnosis process effectively. So which will help us the patients to remove which will which will which will prevent the patient mobility and faster diagnose process can be taken at the critical situation. OK, so then I found out that the Stego crypto technique is found to be novel and and when it comes to the next level of data heading technique. We have chosen the chaos based encryption technique. OK, in the Kaas based encryption technique, what happened?

In the sense even the IT has, it has depends on 2 important parameters. 1 is system, system parameter and the initial condition. If there is any slight change in anyone of the parameter the entire data will be affected. So what happened in the sense we have, we have fine-tuned. First we have started with 1D then we have moved to 2D, we have developed our own. What is that? System start slowly start developing our own. Previously we have used the existing.

When our own chaotic system, it's an assign based chaotic system. So it is found to be one of the very good Kyoto system and we can able to see my research Google Scholar which has got more number of citation nearly 70 close to 70 citations have been covered within a short duration of period. Then now we are into the the next level to when we search off.

Lawrence. Static system then we have moved to.

How to increase the security of my data hiding technique? We have developed, we made a more complex sciatic system which is going to be more nonlinear and we have done a lot of analysis to prove that this is going to be a more what is that more nonlinear system or dynamic system. Say for example, we have done bifurcation analysis, Lipanov exponent and we have done. KY dimension offer and we have done what is that?

The NST test, Yeah, yeah, come again.

Yeah.

It seems you have shared a comprehensive overview of your teaching, research, and contributions. Let me now ask you some specific

Let's start with your teaching approach. How do you tailor your method when explaining complex topics like signal processing or image processing to ensure students grasp the fundamental concepts clearly?

OK so say for example I will be I will be explaining students say for example when it come to a simple topic of.

Representing what is difference between a signal and system? OK, without giving input the system will not work OK. So I will be able to explain them within a practical oriented. How practical in the sense everyday life what we are doing. How a system what is a system? System should have any input system should have an output and it will have a center processing unit. So even if you have a system without a signal without a signal, signal can be of any time when I speak it is a signal. Okay, so this can be of two types when it comes to analog signal and discrete time signal. How analog signal what is an analog signal? I will I will use a tools to demonstrate how a signal is generated from a normal transducer or sensor.

And how how when continuous, how a random signal can be used for analysis. Everything from the base crash to the end, how to understand the signal is very important for a system. Then I will tell you what are the different kind of system, how it is practically involved in our day-to-day life, whether it is going to be a time variant system or invariant system, or whether it is an causal or non causal system, how it is going to be.

Be used in our day-to-day life. How, how it is used to, uh, understand that uh, how a system should be classified based on uh, the real time scenarios. I will be using it to demonstrate.

Can I? I will ask you a simple questions when I come to. I will take some small examples to demonstrate.

Then.

What I say? Yeah, what I say.

OK.

How do you ensure that students stay engaged and motivated when handling challenging topics like chaotic systems or encryption techniques?

I will, I will tell first what will be the outcome of that one. So when I come to nowadays, when I come recently, my final year students are doing researchers on Kyotic based image encryption and it is based on memory sister.

OK, so.

So now I will tell you about what is the practical, uh, practical applicability of, uh, doing this work, whether it is feasible or not, OK, how I can help them to develop the system. So it yeah, I will tell the all the, all the what are the benefits and what are the drawbacks of it also. So when I come to say, for example. When we when we do this research, we can publish a good paper.

And I will tell you that because when I come to, when you do a rainy research on a or other thing, a lot of people are doing work on A and other things. But when we should choose a topic which is very novel, we have more chances of acceptance in SCA journals. So I will motivate them in that way. Then I will tell you that what are the tools, what are the what are the research papers that I have? I have enquired and how to motivate, how to deviate them to. Understand about Kayas and I will sit with them.

I will help them how to model that one. What are the ways high studied I I learned from that and I will help them in a such a way. And recently we have developed their model Kyas system model in a ESP 32, which is a very it it can have can handle only low, low quantity of data. So usually people will generate A chaotic system using STM processor. OK, STM or what is that the DSP processor, but we have.

Successfully implemented that chaotic system in an ESB 32. It has been done by the continuous motivation of us and the student are successfully implemented and it has been published. You can able to see my profile where I have the second paper which I mentioned it is published in nonlinear dynamics. It is one of the reputed journal which has got 66 impact factor is going to be 6 and and then we have implemented that one in ESB 32 and similarly we have we have done four other works.

With different chaotic system, 1 is with respect to membrane system, another 2 with respect to other Kyoto system and 4D and 3D kyotic system and it has also implemented in ESP 32. When implementing in hardware, the weightage of acceptance of our research is going to be very high.

I think so. I think I answered your question.

Yes, you did. Thank you for the detailed explanation, Professor. Implementing practical applications and linking them with impactful research seems like a strong motivator for students. Moving on, how do you balance your research responsibilities with your teaching and administrative roles, such as being a department coordinator or examination controller?

OK, I can tell you something. I've been part of lot of roles from my teaching career. I've been acted as an assistant department level examination coordinator.

And I have been.

Now I'm currently international conference in Amrita and have been part of several roles, several roles in organizing events. But I may not be the lead role, but I've been the main role which which will support for the team and and what is how I balance. That is a very important question for every teacher that how I will balance my teaching and research in the sense. Every day.

After my college hours, I will sit for research. It's whatever may be the day, at least I will sit for two of us. I will spend more than that effort, OK. And whenever I am having during my exam hours, OK, during when we have a, when the students have exam, those times I will use effectively in the lab, OK every day, every every day. After my working hours, I will definitely will be in the lab and I will be spending more time with my students discussing about all those.

Things and I will because every day when you come to research, it is not a one day task. We will face a lot of difficulty we will be doing.

We will we will get when we sit for more number, when we sit for longer time, we will get new ideas, We will get we will be able to solve a difficult problem in a very easy way. So this is a but when I come to teaching, teaching is not a problem for me. I've been here for 15 years so that.

But I, I can able to handle that is in a very as a teacher, I can I know what to be done in the class effectively and I I will have know how to make them understand for each and every topic. That is what I'm doing till now. But when I come to research, I my my teaching is also will focus on research. Whatever topics I will take, I will tell these are the things I'm doing and this particular topic will help us to.

Or do this particular research I will explain in such a way.

I think I'm answered your question.

Yes, you did. Thank you, Professor. It’s clear that you have a structured approach to balancing your roles effectively while maintaining a strong emphasis on research and student engagement. Let's proceed to the next aspect. Can you share how your contributions to research and patents have influenced your teaching methodologies? Specifically, how do you integrate your findings into the curriculum or classroom activities?

OK, so when I come to what you are, you can you, you can understand that during our conversation, I've been taking topics on signal processing.

DSP all those things. So these are more are aligned to my subjects that my research topic. So whatever, whatever I what that's what I answered previously whatever I.

The web teach, I will align everything towards our research, OK, and I will map everything to say, for example, there is an uh, uh, there is a topic, OK, uh, topic called.

How a signal has to be taken? What are the what happens when we take a signal? For a series of a signal, what are what we will get? Say for example when we take Fourier series, we will get harmonics and DC component of the signal and it can be applied only for the periodic signal. I will tell them everything why it is required? Why this DC component and harmonics are required for further analysis? Because when you take continuous time signal we will get only two important things.

Something called Fourier series OK, so how Fourier series will help us to understand the signal OK how this Coco to understand to make this make the students to understand for a serious offer signal so.

When is with respect to time and the hamlet too we're other than that there is no information from a signal. So in order to get more more understanding about the signal, we will be studying about.

How how these signals can be used for the How this curriculum can be mapped to my real time project and how this this particular topic can be enhanced to other communication topic or any other topic which requests this signal as many input?

So I will be more from the COI will map everything I will I will conduct instead of having simply giving assignments and all, I will convert each and every every course into capstone project. So the capstone project will help us to student when we do practical.

Practical work, they will understand more about it. So this time also when I take signal processing, I will tell that you should take an audio signal from the audio signal.

The apply to your system what happens take 8 samples from it and how it is to be used for an analysis. When you apply to Fourier series or like that I will I will make them to deal with the real time application.

I think answered your question.

Yes, you’ve answered it comprehensively. It’s excellent to hear how you map curriculum topics to real-world projects and research, ensuring deeper understanding and practical applications for students. Now, shifting to your research, could you share how your collaborations, for example with IIT Madras or others, have enhanced your research outcomes and teaching practices?

Sorry to interrupt, we're down to the last 5 minutes.

So actually I said that during my PhD itself, I have been collaborated with IIT Madras and I have published one paper and 11 conference paper with them. Now what we are doing in the sense we are collaborating with the peoples from King Khalid University and we have.

Yeah. Thank you.

Collaboration with Malaysia and Sambas, Dr. Sambas and one from Jamal from Kali.

University and we have, and I have been closely working towards uh, Dijo Hong from Jio Bank, uh, Joe Bong National University of South Korea. We have been collaborated in cryptography technique and we have been submitted 3 cryptographic purpose in recently and all the three are under review. And in addition to that, uh, I, I can, able to, if suppose you need for a guest lecture to be happen here, I can bring the.

Because I have a very good understanding between these purposes. And in addition to that, not only I'm working on cryptography. One of my colleague who worked with me called Rajneesh, he is in currently employed in IIT Bhopal, triple IT Bhopal. And my PhD student, my one of the scholar is working on narcisseptic narcisseptic analysis of memory system. So using for that one we have, we have.

As an diabetic, as an diabetic foot ulcer using to detect the diabetic filters as the earliest stage using memory resistor technique. We collaborated with him and we have we have been submitted a paper recently and it is one of it is based on material paper. I'm working on material so fabrication of memory system material and it is found to be a novel technique and he has done the second work also we are under review and it has been collaborated with the same Rajneesh from Triple 80.

So I have a very good collaboration with IIT peoples and and you can able to see that my my my PhD guide is a doctor biological is he is an he runs a startup. Recently he acute all this job as a research research research head and he gone to.

Has a startup and he he he has a company that they developed a product called Dipset which is used to.

Put what is that in hospital we will use what is that they made it as a miniature one. It is another very effective. It is into the market this year it is into the market and I also submitted recently for an MSME Ideathon and my first patent which has got published has been selected for the next level of presentation. So these are the ways I've been working on with the industries to to make.

It's in a product add that patent. So we have been we have been doing lot of works towards to making it as a product. My research completely transformed instead of publishing a paper into product. So this will this will not only gains knowledge, it will create a lot of opportunity for the students to become an entrepreneur.

So that is my motto. I want to create a, uh, a small startup, uh, something which, which, which is needed for the society. Recently that patent, what I published in the sense I developed, yeah, robot for the what is the removing the drainage blockage? I think I'm answered your question.

OK, Usually this is the first time I'm really interacting with an AA that is going to be a really. I was so excited. What are the things you will be asking with me? So it was really a good experience for me to interact. Thank you.

Yes, you’ve articulated your collaborations and their impact on your research and innovations very well, Professor. Transforming research into tangible products and fostering entrepreneurial opportunities for students is indeed commendable. Thank you for sharing that. Finally, as we approach the conclusion, do you have any questions or thoughts you’d like to share?

Thank you. I'm ready to meet you soon at VIT. Thank you.

Thank you, Professor. I'm glad you had a positive experience engaging with this process. Your insights, expertise, and dedication to teaching and research are clearly evident. It’s been a privilege to hear about your contributions and vision. If you're ready to conclude the session, please confirm, and I’ll officially end the interview.

Thank you, Professor. It was an honor speaking with you. I will now officially conclude the session. Take care and best of luck with your endeavors.

Our scheduled time for the interview is now up. Before we conclude, do you have any questions related to the role or the company?

I know that VAT is one of the very good institution which is focusing more on research.

I applied for Professor Carter. I have nearly 15 years of teaching and research experience. So whether I'm I think I'm eligible for proposer Professor Kedar. So what will be the role they will be providing to me?

It's just for knowledge, not for any other things.

Understood, Professor. Based on the job details, your qualifications and extensive experience in teaching, research, and guiding projects, along with your impressive contributions to publications, patents, and innovative techniques, align strongly with the role of a Professor. The responsibilities primarily revolve around teaching, mentoring, guiding student research, publishing papers, contributing to departmental tasks, and fostering industry collaboration—areas where you have demonstrated notable expertise. You seem well-suited to the expectations outlined. If you have further questions or need clarifications, please let me know.

OK, what will be the next round? Can I ask that?

Is it? Yeah, Yeah. Come again?

Unfortunately,

OK.

OK.

Yeah, yeah, it's coming in, please.

OK, OK.

It was

OK, confirm. We can conclude it. Thank you. Thank you for that. We had a very good, This is my first EA interview and it was awesome. OK. I really had a very good time with you.

Thank you once again, Professor, for your time and engaging discussion. If there's nothing else, please confirm, and I will officially conclude the interview.