Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Department of Instrumentation

The increased usage of image and video compression in real-time applications has led to pressing need for efficient compression algorithms and dedicated hardware circuits. The aim of this proposed paper is to design an efficient adder compressor for approximated two-dimensional discrete cosine transform realization. This paper deals with enhancing the existing XOR-based adder compressor to a better XOR-XNOR-based architecture. The proposed compressors offer less delay, low power with the penalty of area. The proposed method provides less power consumption and offers high speed as compared to conventional design by 11.5% and 2%, respectively. © 2020, Springer Nature Singapore Pte Ltd.

VIT Unitversity

School of Electrical Engineering

Vellore Campus

Advances in Intelligent Systems and Computing Soft Computing for Problem Solving

Realization of 2-D DCT Using Adder Compressor

We demonstrate an all-fiber ytterbium (Yb)-doped mode-locked oscillator using a hybrid structure based on no-core fiber graded-index multimode fiber (NCF-GIMF) as the saturable absorber (SA). The proposed SA exhibits unique characteristics such as large-power tolerance, high modulation depth of 24.7%, and low saturation intensity of 11.01 MW/cm2, which help to achieve a stable mode-locking operation. The all-normal and self-starting oscillator generates stable ultrafast pulses with a repetition rate of 21.35 MHz, pulse energy/average output power of 120 pJ/2.7 mW, and a pulse duration of 2.4 ps at a central wavelength of 1034.2 nm. The output pulses are then dechirped to 300 fs using an external grating compressor and possess high stability with a radio frequency spectrum of 58 dB. These results show that the NCF-GIMF-based SA can be used as an effective photonic device for high energy wave breaking free pulse generation. © 2020 Optical Society of America

World University root node

Applied Optics

Hybrid structure based on no-core and graded-index multimode fibers as saturable absorber for a self-starting mode-locked Yb-doped fiber laser

Here, a multi-input–output control strategy-based adaptive system is implemented to regulate the glycaemic and hypertension (HT) level concurrently for post-operative patients. The current medical research identifies the relationship between diabetes and HT, and these two diseases have possible overlap in their disease aetiology. Based on the continuum, the blood glucose and blood pressure (BP) have to be measured independently and control the infusion to maintain optimally based on the variations of diabetic mellitus and HT to avoid the major complications for the perioperative condition. Based on the analysis, the post-operative strain may increase HT and may increase the glycaemic level, and this uncertainty of disparity may lead to BP, hyperinsulinemia, cardio diseases, and osmotic diuresis along with hyperglycaemia. The proposed adaptive cascade control strategy illustrates two different types of control loops independently, and these loops adopt an adaptive control strategy with parametric compensation. This adaptive control algorithm integrates the cascade methodology along with expert knowledge to treat these diseases by using adaptation laws with the help of fuzzy logic to regulate the proper insulin and sodium nitroprusside (SNP) infusion. The output response of the plasma glucose concentration and HT regulation was shown along with insulin infusion rate and SNP infusion rate based on the extensive simulation readings. The attained simulation results demonstrate that the adaptive control strategy shows better outcomes for the infusion and may achieve potentially better control on HT and glycaemic levels for post-operative patients. © 2020, Springer-Verlag London Ltd., part of Springer Nature.

Neural Computing and Applications

A fuzzy-based adaptive multi-input–output scheme in lieu of diabetic and hypertension management for post-operative patients: an human–machine interface approach with its continuum

In this article, we present a high-performance SiGe junctionless FinFET (JLFinFET) on insulator by selective growth of buried oxide (SELBOX) layer device with better electrostatics. The mole fraction x = 0.1, 0.2, 0.3, 0.4, 0.5, and 0.7 with fin width 10 nm and gate length of 20 nm are considered for simulation using technology computer aided design (TCAD) Sentaurus device. With Si0.9Ge0.1 JLFinFET on insulator by SELBOX layer, nearly an ideal subthreshold swing of 61.51 mV/decade and enhanced on-current, off-current has been achieved. Evaluation of on-off current ratio, DIBL, SS for different parameters, such as doping concentration (1015-1019/cm3), channel length (10-40 nm), temperature (200-700°K) on JLJFinFET on insulator by SELBOX layer are presented. Three-dimensional device simulation using the TCAD software tool Sentaurus Device is used to simulate and the results are compared with a SELBOX JLFinFET. © 2020 Wiley Periodicals LLC.

Computational Intelligence

Simulation based study on parameter variation of Si0.9Ge0.1 junction-less SELBOX FinFET for high-performance application

Light-field enables us to observe scenes from free view-points. However, it generally consists of 4-D enormous data, which are not suitable for storing or transmitting without effective compression. Image acquisition, transmission, interpretation and visualization have witnessed a lot of research interest and have manifold applications in real life. Light field Images popularly known as Plenoptic Images are light rays travelling in every direction. The data sets generated using plenoptic images are large in size and consume a lot of storage space. This paper studies the general process of image acquisition, light field images and various datasets. Image compression will help the users or professionals to not only achieve storage efficiency but also aid in transmission of Images. In this paper, we study efficient compression of multi-focus images synthesized from dense light-field by using DWT instead of DCT-based compression in order to suppress degradation such as block noise. Quality of reconstructed light-field is evaluated by PSNR for analyzing characteristics of residuals. This paper presents the modeling, design and implementation of two IP cores that are compliant with the CCSDS 121.0-B-2 and CCSDS 123.0-B-1 lossless satellite image compression standards. This paper provides a comparative study of various image compression techniques/algorithms and evaluates them on parameters like peak signal to noise ratio (PSNR), mean square error (MSE), Structural Similarity Index (SSI) and compression ratio (CR). © 2020, Springer Science+Business Media, LLC, part of Springer Nature.

International Journal of Speech Technology

High efficiency dense light field and all-in-focus compression for lossless satellite image by using CCSDS

Dynamic Monitoring of Health Using Smart Health Band

In the process of finding an alternative for CMOS technology, various new technologies have emerged with emphasis on reducing the power consumption. Amongst the various technologies, nanomagnetic logic (NML) serves as a favourable replacement. Nanomagnetic logic is a new computing paradigms for the beyond CMOS technology that uses both memory and logic elements between nanomagnets using field-coupled technology. This paper explores the approximate computing concept in nanomagnetic logic. Approximate computing is an emerging computing paradigm where we can trades-off the power with accuracy. We have put forward two approximate 8-bit Dadda multipliers that have been designed using two different 5:2 approximate compressors using majority-based logic. The effectiveness and efficiency of these multipliers are evaluated using image processing algorithms and comparison with other approximate multipliers. © 2020 Inderscience Enterprises Ltd.

International Journal of Materials and Product Technology

Design and analysis of majority logic-based multipliers in perpendicular nanomagnetic logic

Optical Coherence Tomography (OCT) is a growing non-invasive imaging technology that is capable of generating high-resolution cross-sectional images and high processing speed. It is extensively used for the diagnosis of retinal diseases in ophthalmology, estimation of blood flow and in the field of oncology, cardiology, and dermatology as an imaging device. The spectral-domain OCT (SD-OCT) uses low coherence interferometry to get depth-resolved information of the sample with resolution in the micrometer range and imaging depth in the millimeter range. The complexity of the OCT algorithm demands high processing speed from the underlying platform. The aim is to develop the signal processing algorithm to achieve improved imaging depth. The methods such as background removal, re-sampling, FFT are used to get the desired depth profile of the sample. The response of the actual hardware model is predicted from the outputs. This depth profile gives the information of depth about the sample and the maximum depth depends on the number of pixel information obtained from the spectrometer. © 2020 IEEE.

Proceedings of the 2020 IEEE International Conference on Communication and Signal Processing, ICCSP 2020

Development of Signal Processing Algorithm for Optical Coherence Tomography

This paper describes a simple and cost-effective technique to fabricate a multifunctional temperature sensor for Wearable Electronics Applications. The Indium Tin Oxide (ITO) sputter-coated Polyethylene Terephthalate (PET) film is utilized in this work behaves like a thermo-resistive material to sense the temperature. The screen-printing technique is utilized to prepare silver electrode on ITO film. The fabricated sensor exhibits good linearity, dynamic response, and repeatability throughout the temperature range. These characteristics demonstrate the suitability of the ITO film temperature sensor to monitor the human body temperature in wearable electronic devices. © 2020 IEEE.

Department of Sensor and Biomedical Technology

School of Electronics Engineering

Proceedings of 2020 3rd International Conference on Advances in Electronics, Computers and Communications, ICAECC 2020

Indium Tin Oxide Based Flexible Temperature Sensor for Human Body Temperature Monitoring

One of the recent advances for the beyond complementary metal-oxide semiconductor (CMOS) area is nano-magnetic logic (NML). Many researchers are developing a keen interest in the areas of circuit designing, area optimization and its application in storing the data. Because of its inherent magnetic nature, it can be used to design any magnetic circuit. When compared to the CMOS technology NML logic has potential advantages in terms of non-volatile, low power and radiation in hard. In this paper, we have proposed and implemented a 4-bit squarer circuit using the perpendicular NML (pNML). Squarer design is implemented in MagCAD tool, which embeds design rules, physical models and technological parameters. A register-transfer-level of (VHDL) of the circuit is automatically extracted by MagCAD. The extracted model can be simulated with fast HDL-simulators; this makes it possible to verify the behavior and extract the performance of the designed circuit. This nano-magnetic logic technology is alternative to CMOS technology, which is non-volatile in nature with reduced power consumption. © 2020, Springer Nature Singapore Pte Ltd.