Deep Transfer Learning for Green Environment Security in Smart Cities
The Department of Computer Science and Engineering is pleased to announce an extraordinary research paper titled “A Deep Transfer Learning Model for Green Environment Security Analysis in Smart City“, authored by Dr Sambit Kumar Mishra, Assistant Professor, was published in the Journal of King Saud University – Computer and Information Sciences that falls within the Q1 quartile with an Impact Factor (IF) of 6.9. The study introduces a model to automatically classify high-resolution scene images for environmental conservation in smart cities. By enhancing the training dataset with spatial patterns, the model improves green resource management and personalised services. It also demonstrates the effectiveness of LULC classification in smart city environments using transfer learning. Data augmentation techniques improve model performance, and optimisation methods enhance efficiency, contributing to better environmental management.
Abstract
The research addresses the importance of green environmental security in smart cities and proposes a morphologically augmented fine-tuned DenseNet121 (MAFDN) model for Land Use and Land Cover (LULC) classification. This model aims to automate the categorisation of high spatial resolution scene images to facilitate green resource management and personalised services.
Dr Mishra collaborated with Dr Rasmita Dash and Madhusmita Sahu from SoA Deemed to be University, India, as well as Mamoona Humayun, Majed Alfayad, and Mohammed Assiri from universities in Saudi Arabia.
His plans include optimising the model using pruning methods to create lightweight scene classification models for resolving challenges in LULC datasets.
- Published in CSE NEWS, Departmental News, News
Tracing a Translator’s Journey: An Interview with V Ramaswamy
A translated work must retain the essence and flavour of regional culture and locales. A good translator tries to reproduce the particularities that are ingrained within the texts. On this note, Dr Bidisha Pal, Assistant Professor from the Department of Literature and Languages, has published a paper, “Delving into a Translator’s Journey of Translating Marginalised Voices of Bengal: An Insightful Discussion with V Ramaswamy” in Meta Journal des traducteurs Translators’ Journal. This research revolves around a discussion with the well-known translator V Ramaswamy, a noted name in Bengali Dalit literature and translation. Ramaswamy shares his thoughts on working on the translation projects that he enjoys doing and that establish the cause of the marginalised people of Bengal.
Abstract
In this interview discussion with Bidisha Pal and Md. Mojibur Rahman, translator V Ramaswamy focuses on the journey of his translation and tryst with the marginalised Dalit voice(s) in Bengal. He speaks about the writings that propel him to choose translating and to carry voice(s) beyond the Bengal arena, thus dissolving language barriers. The deliberate choice to translate various pieces representing various periods acts as a witness to his existence as an independent translator. According to him, translation is also a source of healing to deal with a tragic past and the complicacies that life often presents to him. He shares his experience translating Subimal Mishra, the powerful poet who speaks for marginalised people. Ramaswamy, as he states in the interview, makes a vow to translate Mishra’s whole writing career. He talks about translating Manoranjan Byapari, a Bengali Dalit prize-winning author and political persona who has also championed the Dalit cause in Bengal, Adhir Biswas, the story-writer and publisher of a publishing house in Kolkata Gangchil that publishes writings by those literary personas who do not fall, as such, into the category of the mainstream, Bangladeshi writer Shahidul Zahir whose revolutionary voice and zeal reverberate in the literary world of Bangladesh, as well as Ansaruddin, a writer and farmer by profession whose works Ramaswamy is currently translating. Despite not being a part of the literary world, Ramaswamy has built an intense connection with literature and has gradually become part of the world. For him, translation is something that has to remain faithful to the source text, especially if people are doing literary translation.
Practical implementation/social implications of the research
The research contains elements that are connected with the values of the society. It discusses the nuances of translation of the writings of marginalised people, which contain many unforeseen truths of society, and depicts the struggles for the existence of the people. The translator is doing a commendable job compiling the writing thorough translation that will act as a bridge to the unfamiliar audience who could feel connected with the marginalised people.
Dr Bidisha aims to publish many more articles in the diverse interdisciplinary fields of literature, edit books, and attend conferences.
- Published in Departmental News, English Current Happenings, English news, News, Research News
Promoting Well-Being in Children and Adolescents: A Holistic Guide to Mindfulness Strategies and Effects
Mindfulness has emerged as a pivotal aspect in the domain of mental health, especially in the context of children and adolescents’ well-being. It refers to an inherent ability to be fully present in the moment, enabling an individual to gain an acute sense of awareness without any biases. Such a state of mindfulness empowers individuals to navigate the ups and downs of life with clarity and composure. Dr M Dhamodharan, an Assistant Professor in the Department of Psychology, has published a book chapter titled “Mindfulness for Child and Adolescent Well-Being: A Comprehensive Exploration of Strategies and Outcomes,” where he has comprehensively explored the intricacies of mindfulness and its impact on children and adolescents.
Here’s an abstract of the chapter published in the book, “Promoting Mindfulness and Well-Being with Indian Psychology.”
About the book chapter
The chapter examines the significant impact of mindfulness on children and adolescents. Mindfulness is the mental state defined by greater concentration, consciousness, and focus on the here and now, free from judgment. This chapter starts with the theoretical background of mindfulness and the current developments of mindfulness related to children’s and adolescents’ wellbeing. There are three main domains focused on mindfulness. Begin with emotional domains—that explains how mindfulness helps to regulate emotions. Secondly, cognitive domains explain how mindfulness practices help cognitive development and academic performance in educational settings. Thirdly, social and interpersonal domains explain the uses of mindfulness to improve social skills and interpersonal relationships with peer groups, family, and society. The chapter concludes with the role of parental and educational institutions in promoting mindfulness among children and adolescents to create a positive impact on their lives.
Dr Dhamodharan’s book chapter is targeted at Educators, parents, counsellors, and mental health specialists who stand to gain invaluable insights from the exploration of mindfulness within these pages.
- Published in Departmental News, News, Psychology News, Research News
Revolutionising LED Lighting: Paper Published in IEEE Transactions on Industry Applications
In a significant academic accomplishment, Dr Ramanjaneya Reddy, Assistant Professor in the Department of Electrical and Electronics Engineering, along with UG students Ms Mehataj Syed and Mr Busam Gopichand, have recently published a groundbreaking paper titled “A Three Leg Asymmetrical Voltage Resonant Converter with Independent Dimming Control for Multiple Load LED Lighting Applications” in the esteemed Q1 journal IEEE Transactions on Industry Applications. The journal boasts an impressive impact factor of 4.4, further underscoring the importance of this research contribution.
The paper delves into the development of a novel Three Leg Asymmetrical Voltage Resonant Converter that offers independent dimming control for multiple load LED lighting applications. This innovation holds great promise for enhancing the efficiency and versatility of LED lighting systems, paving the way for more sustainable and adaptable lighting solutions in various industrial applications.
Dr Ramanjaneya Reddy’s leadership and the collaborative efforts of Ms Mehataj Syed and Mr Busam Gopichand have culminated in this significant publication, which not only adds to the body of knowledge in the field but also showcases the talent and dedication of the researchers at the department.
This achievement highlights the commitment to excellence and innovation within the Department of Electrical and Electronics Engineering, positioning it as a hub for cutting-edge research and academic prowess. The impact of this research is expected to reverberate across the industry, contributing to advancements in LED lighting technology and its applications.
The publication of this paper underscores the quality and rigour of the research solidifying their reputation as leaders in the field. This accomplishment is a testament to the department’s commitment to pushing boundaries and making meaningful contributions to the field of electrical engineering.
Congratulations to Dr Ramanjaneya Reddy, Ms Mehataj Syed, and Mr Busam Gopichand on this remarkable achievement, and we look forward to seeing the continued impact of their research in the field.
Abstract
This work proposes a three-leg asymmetrical voltage resonant converter for multiple load Light Emitting Diode (LED) lighting applications. The proposed converter is developed with a common leg-1 for both load-1 and load-2. The load-1 is powered from asymmetrical voltage between leg-1 and leg-2. Similarly, load-2 is powered from asymmetrical voltage between leg-1 and leg-3. The proposed circuit provides the following major contributions: (1) Independent dimming control of LED loads; (2) Zero Voltage Switching (ZVS) of all power switches; (3) High efficiency; and (4) Asymmetrical voltage regulation. To achieve independent dimming control, the voltages between legs are made zero by dimming leg-2 and leg-3 independently. Two resonant circuits are connected in the proposed circuit. Owing to this all the power switches operate with ZVS, which reduces the switching losses. Further, two LED lamps are connected in series with battery sources to supply the threshold voltage to lamps which in turn results in a lower power processing of the converter.
Explanation of Research in Layperson’s Terms
This work proposes a three-leg asymmetrical voltage resonant converter with independent dimming control for multiple load LED lighting applications. The proposed converter drives multiple loads independently with a dimming feature. The converter is developed with leg-1 is common for both LED loads. The major contributions of the proposed LED driver are independent dimming control, asymmetrical voltage regulation, zero voltage switching of all the power switches, and high efficiency. The threshold voltage of LED loads is supplied by batteries connected in series with LED loads, which will help in lower power processing of the proposed converter. Further, due to soft switching technology implemented in this converter, it reduces the losses in the system considerably increasing efficiency.
Title of Research Paper in the Citation Format
A Three Leg Asymmetrical Voltage Resonant Converter with Independent Dimming Control for Multiple Load LED Lighting Applications.
Citation: Ramanjaneya Reddy Udumula, et. al, “A Three Leg Asymmetrical Voltage Resonant Converter with Independent Dimming Control for Multiple Load LED Lighting Applications,” IEEE Transactions on Industry Applications, Feb 2024. doi: 10.1109/TIA.2024.3363676
Practical and Social Implementation of Research
To achieve effective and efficient use of energy resources under the sustainable development goals, Light Emitting Diodes (LEDs) have emerged as a global lighting industry solution. Over the conventional lighting sources such as incandescent lamps, fluorescent lamps, and high intensity discharge lamps, LEDs are i) more efficient, ii) eco-friendly due to absence of toxic gases, iii) have longer life span up to one lakh year, iv) high luminous intensity and v) good colour rendering index. LED’s requires low voltage direct current supply and the V-I characteristics of LEDs which is like Shockley diode represents the exponential growth of current over a small voltage variation which may damage the LED or effects the illumination. Hence, an LED driver is necessary in an LED system to supply LEDs with constant current. DC fed LED drivers are more reliable due to absence of AC-DC conversion stage and power factor correction stage which are crucial in AC fed LED drivers. Therefore, DC fed LED drivers are paid more attention in recent times in the majority of battery-powered/solar-powered applications. Given its features of high power, exceptional efficiency, cost-effectiveness, and flicker-free operation, this innovation is well-suited for streetlight/stadium lighting applications.
Collaborations
Dr. Kasi Ramakrishna Reddy, Assistant Professor
Department of Electrical and Electronics Engineering, Vasavi College of Engineering, Hyderabad
Future Research Plans
The future work is on PV/battery fed LED driver topologies suitable for streetlighting/stadium lighting applications with low component count, high efficiency, reduced device stress, and flicker free lighting system
- Published in Departmental News, EEE NEWS, News, Research News