Do you think CSIR-JRF is a tough nut to crack? Persistence is the key
“Believe you can and you’re halfway there.” – Theodore Roosevelt
Jesni M Jacob, currently doing research under Dr Mahesh Kumar Ravva narrates her journey to achieving CSIR-JRF All India Rank of 65 through persistent efforts.
I’m working in the field of computational chemistry on designing and developing organic molecules for OLED applications. Securing an AIR of 65 in the CSIR JRF in Chemical Science June 2021 exam is a dream come true moment for me.
In 2019, I completed my post-graduate studies at Madras Christian College, Chennai. The four-year-long journey from zero to JRF AIR 65 was of hard work, patience, sleepless nights, sacrifices and even frustrated moments. It was challenging to remain motivated after multiple unsuccessful attempts. But I wasn’t ready to give up hope. I believed in myself and dreamed big with faith in God Almighty.
My previous attempts didn’t provide me with any hope of continuing my preparation because my marks were consistently far below the cutoffs. That made me realise one thing: without coaching and ample guidance, qualifying for CSIR JRF is a toiling task for an average student. But I learned that with strong passion, proper dedication, and right strategies of do’s and don’ts, any aspiring student can pass the exam with flying colours.
After each attempt, I learned from my mistakes and tried to optimise my strategies. One should never try to cover the entire syllabus and be bothered about it. I analysed the unit-wise weightage and narrowed it down to a few important topics that I found exciting and comfortable.
- Choose topics carefully and focus solely on mastering them.
- Try to stick to and rely on reliable standard textbooks as much as possible.
- The SRMAP library provided me with excellent access to a wide range of standard texts.
The JRF aspirants should try to solve previous years’ questions from standard exams (CSIR, GATE, IISc, etc.) and note new concepts or approaches every day. Enjoy and prepare short notes with a lot of scribbling and highlighting in various colours. Notes should be concise and simple to revise later. But don’t spend too much time making notes.
I made time for exam preparation along with my work and research activities. I’m grateful to my family, teachers, and especially my guide- Dr Mahesh Kumar Ravva, for their constant support and encouragement. He gave me a safe space to express my desire to ace the exam and my anxieties about it. Dr Mahesh always listened to my concerns and helped me to gain clarity on my thoughts. He always encouraged me to dream big and shared his perspectives and lessons from his life experiences. He is a great mentor, motivator, and teacher to me.
- Published in Blog, Chemistry-news, Departmental News, News, Research, Students Achievements
Presenting our first doctorate holder: Dr Vasavi Dutt
The university revels in its monumental achievement of bringing out the maiden doctorate degree holder, Dr Vasavi Dutt, within four years of its inception. Dr Vasavi Dutt enrolled as a PhD scholar in the Department of Chemistry, under the supervision of Dr Nimai Mishra, Assistant Professor, in 2018. She received the academic honour for her research thesis titled “Improvement of Photoluminescence and Achieving the Stabilization of Cesium Lead Halide Perovskite Nanocrystals for Light-emitting Applications”. Dr Vasavi has been an extremely diligent student and she mustered up immense courage to bring her research to closure even during the testing times of the pandemic.
In the words of Dr Nimai Mishra, “It was a great privilege for me to supervise Ms Vasavi, (correct me Dr Vasavi now) as my first PhD student. She joined my research lab in July 2018 when there was no lab at all, and we started our work at Chemistry BTech Lab”. Dr Mishra was gleaming with pride as he spoke more about his scholar, “During these three and a half years, I had relentless scientific discussions with Vasavi which enriched both of us. Her attitude towards research was remarkable, whenever I gave her a research problem, she used to come up with a detailed outline of how to go ahead with the project”. He also praised her for all her accomplishments which include the publication of 13 research papers, filing of 3 patents and winning the best poster in national & internal conferences.
Dr Vasavi also shared her happiness for having received the mentorship of Dr Mishra, “Working in Dr Nimai Mishra’s lab was a great experience. I had the opportunity to engage and initiate multiple research topics and collaborations. He has always encouraged me to explore new fields to broaden perspectives and bring together new ideas”. She also expressed her gratitude to him for being a welcoming and approachable mentor. “I’m eternally thankful to Dr Mishra for his friendship, empathy, and moreover, for his great sense of humour”. She currently resides in the US with her family. Now that she has successfully completed her PhD, soon she would start looking for a job or rather pursue a post-doctoral fellowship in America.
Dr Vasavi was out of words to thank the university for facilitating and bringing the best in technology and infrastructure for advanced research. “I can never thank my university enough for extending a hospitable environment and nutritious food for all the doctorate students”, she further mentioned. The university serves as a promised land for thousands of research aspirants like her to head towards their dream of making unfeigned contributions to academia.
- Published in Chemistry-news, Departmental News, News, Students Achievements
C-SMILE: Pertinent feedbacks and effective learning
“The correct analogy for the mind is not a vessel that needs filling, but wood that needs igniting” – Plutarch
Where would you go to get the most appropriate feedback to improve your learning? Whom would you approach? An active learner requires continuous assessment. Exposure to relevant remarks can make a significant impact in the learning output. Choosing the right source of feedback is important to locate your position in the learning ecosystem. This is where C-SMILE enters the frame.
The Department of Computer Science and Engineering is delighted to inform you that the patent application (202241010415) entitled ‘Classification of Student’s Misconceptions in Individualized Learning Environments (C-SMILE)’ got published. The patent application was submitted by Associate professor Dr Sobin C C and BTech final year student Meka Varsha as part of the Capstone Project.
C-SMILE is an innovative platform which allows students to take assessment and receive feedback based on their performance and misconceptions. This targets to refine their conceptual and individualised learning. The platform offers the benefits of automated identification of misconceptions and classification of their level of conceptual clarity. This eventually leads to pertinent feedbacks and ensures quality learning. It also helps engineering educators to classify their students into different categories based on their level of conceptual clarity. Short quizzes and multi-level assessments can utilise the objective of this platform.
Dr Sobin C C and Meka Varsha have collaborated with Mr Subheesh N P from IIT Madras and Mr Jahfar Ali from IIT Hyderabad as part of this work. The team has already published 2 conference papers. One of them is in the prestigious IEEE Global Engineering Education Conference (EDUCON 2022), which is the flagship conference of IEEE Education Society.
The researchers are now working on to extend this concept to incorporate Bloom’s taxonomy to formulate more specific questions based on their level in the cognitive domain.
- Published in CSE NEWS, Departmental News, News, Research News
High gain boost converter fed inverter for better power supply
The Department of Electrical and Electronics Engineering is glad to announce that Dr Ramanjaneya Reddy, Assistant Professor; his students, Mr Rahul Kotana and Ms SK Hima Bindu have published a paper titled “High Gain Boost Converter Fed Single-Phase Sine Pulse Width Modulated Inverter” in the journal ‘International Journal of Renewable Energy Research’ having a Scopus site score of 4.2.
Abstract of the Research
A high gain boost converter fed single-phase voltage source inverter with its control for DC to AC power conversion in uninterrupted power supply and renewable energy applications is presented in this paper. The conventional DC-DC boost converter with a coupled inductor and switched capacitor is utilised to obtain high gain. Further, the output voltage of the inverter is controlled by the sinusoidal pulse width modulation technique. The detailed design and analysis of a high gain boost converter fed single-phase voltage source inverter is presented. The sine pulse width modulation control scheme for the voltage source inverter is also developed and presented. To validate the high gain boost converter fed single-phase voltage source inverter, the simulation model is developed in the LTspice software environment, and the results are validated. The results show high gain boost converter achieves a gain of about 10 and the single-phase voltage source inverter can provide an rms voltage of 228 V without using the step-up transformer. The total harmonic distortion of output current is found to be below 4.
About the Research
Energy is an essential factor for the functioning and economic development of the industrialized world. It plays a key role in our day-to-day life. On the other hand, energy management has become a critical factor for our successive economic prosperity. The energy consumption process frequently needs either DC-AC conversion or AC-DC conversion. The DC-AC conversion finds its major application in uninterrupted power supply (UPS) and renewable energy (RE). To supply during power outages, most UPS systems use batteries, usually lead-acid, as the storage mechanism. The battery is supposed to provide the backup in the absence of the grid supply. However, the voltage provided by the battery alone may not be enough to provide the backup. At first, the battery output power which is DC needs to be converted to AC with the help of an inverter. Apparently, the output of the inverter needs to be stepped up with the help of a step-up transformer to achieve an output of 220V 50Hz. An alternative approach to the same process is by using a power electronic converter called the DC-DC boost converter. The boosting of battery/PV voltage can be achieved with the help of a standard boost converter as shown in Fig. 1(b), or by using a battery capable of supplying higher voltage and a step-up transformer as shown in Fig. 1(a). High power batteries and step-up transformers can be eliminated if a high gain boost (HGB) converter is used instead of a standard boost converter. The HGB converter fed DC-AC conversion system is presented in this paper which eliminates the step-up transformer. The circuit configuration of the proposed work is depicted in Fig. 2.
Practical Implementations of the Research
The DC-AC conversion method proposed is based on the HGB converter fed single-phase SPWM inverter. The proposed model is best suited when a low voltage DC supply is available, and a standard 230V AC output is needed to deliver the load. The detailed design and analysis of the HGB converter are carried out, and the gain of the converter is achieved at around 10, which is very high compared with conventional boost converter topologies. A unipolar SPWM control scheme is developed in LTspice to control the single-phase VSI. The simulation results of the complete DC-AC conversion system are in close agreement with the design parameters. Further, the total harmonic distortion of the output current waveform is around 4% which is well below the international standards. In addition, the complete model consisting of both HGB converter and single-phase VSI are successfully simulated for an input of 36 V DC and produced an rms output voltage of 228 V.
In future, the DC-AC conversion method based on a high gain boost converter can be extended with the three-phase voltage source inverter with electric drive applications.
- Published in Departmental News, EEE NEWS, News, Research News