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Computed tomography images can be corrupted by mixed noises such as Gaussian and impulsive noise during acquisition time which results in reduction of its quality. Hence removing the noise from the image is very significant in medical image processing. The existing filters such as mean and median filter are not that efficient in removing impulse and Gaussian noise by retaining the details of the image...
The main motto of every electronic industry is to achieve low power. An efficient way to achieve this is by adapting different architectural modifications in the design. This paper proposes low power implementation of Logarithmic Number System (LNS) arithmetic unit on a FPGA. Power reduction is achieved by partitioning technique. The influence of partitioned memory on the power dissipated and delay...
In this paper, the performance of a novel n-type dielectric modulated gate engineered asymmetric dual short gate tunnel field effect transistor (ADSG-TFET) with pocket doping at the channel region is analyzed and presented. The effects of different high-k materials, silicon film thickness are investigated. The device characteristics are compared with conventional asymmetric structure with and without...
We report the electronic structure and effective mass of a fascinating quasi 1D material, Phosphorene nanoribbons (PNRs). The bandstructure of different orientations of PNRs and its modulation by external electric field reveal the semiconductor to metallic transition and excite device scientists for further application. The behaviour of electrons in PNRs is traced in effective mass calculation. Also,...
Toggle rate estimation is critical in the area of chip design, as it plays a major role in the power dissipation of a chip. This work presents a method to estimate the net toggle rate of a gate level circuit considering the effects of spatial correlation, temporal correlation and glitches and a comparison with LUT based methods is carried out. Previous works have addressed only on LUT based methods...
Lung cancer is one of the fatal diseases that mainly affect the pulmonary nodules of the lungs. Examination of image is presently an essential step of the lung diseases processes like diagnostic, prognostic and follow-up. The survival rate of lung cancer is very low when compared with all other types of cancer. The need for identifying lung cancer at an early stage is very essential and is an active...
National Institute of Ocean Technology (NIOT) under the aegis of Ministry of Earth Sciences, Government of India has developed a Mini work class Polar Remotely Operated Vehicle (PROVe) for polar studies. PROVe is an unmanned, free swimming underwater vehicle. As part of the 34thIndian scientific expedition to Antarctica (ISEA) a team of six members from NIOT participated in the summer expedition in...
Suppression of vibration is one of the functional requirement in structures subjected to dynamic conditions like machine tools, automobile parts etc. To impart increased dynamic stiffness and strength to woven fabric carbon epoxy composite structures, micro rubber particles of average size 5μm and 20nm nano silica particles were added and its dynamic response was evaluated by experimental forced vibration...
In recent years, variety of techniques were developed in the field of SAR image despeckling, which avail to inhibit the Speckle in SAR Image. This paper proposes a patch ordering based SAR image despeckling approaches, which uses two transform domain filtering. The proposed approach consists of two stage filtering. In the first step i.e. coarse filtering, denoising is done by simultaneous Sparse Coding...
The development in the field of sensors in general and biosensors in particular has motivated the research in the recent past. The design and fabrication of devices for health care monitoring has drawn attention in the twenty first century. The simulation of the high-k dielectric (HfO2) FinFET biosensor with nano dimension has been carried out and presented in the present paper. Based on the existing...
IGBT power supply is a single-phase H bridge inverter capable to provide current of ±12kA with 1MA/sec ramp rate. This paper describes performance requirements, ratings, inverter design calculations, multimodular topology, protections, fast control, symmetrical layout, bus bar engineering, and cooling requirement and test results.
The rise in popularity of harvesting energy from ambient vibrations has made compact, energy dense piezoelectric generators commercially available. Much of the available literature focuses on maximizing harvested power through nonlinear processing circuits that require accurate knowledge of generator internal, mechanical and electrical characteristics and idealization of the input vibration source...
Degraded character recognition is one of the most challenging topic in the field of Kannada character recognition. The degraded characters which are broken and deformed will have missing features and will be difficult for any recognition method. Rebuilding the degraded character is very important for better recognition. This paper proposes a novel method to rebuild the broken characters. These characters...
With the fast development of information storage, exploiting new concepts for dense, fast, and non-volatile random access memory with reduced energy consumption is a significant and challenging task. To realize this goal, electric-field control of magnetism is crucial. In this regard, multiferroic materials are important and have attracted much attention due to their interesting new physics and potentials...
In this paper, we proposed the FPGA implementation of complete synchronization methodology for a novel chaotic systems using adaptive control scheme. Chaotic systems are non linear dynamical system having at least one positive Lyapunov exponents. In this paper, first we derived a new adaptive controller and parameter update law to synchronize the identical novel chaotic system using adaptive control...
A broadband electrical metamaterial is proposed in this paper to improve the performance of microstrip antenna. With the help of metamaterial we can improve bandwidth of microstrip antenna as well as miniaturize it. The properties and applications of metamaterial, three half split ring resonator metamaterial and the performance of a system contributing two patch antennas separated by means of a metamaterial...
In this paper a circular patch antenna with a slot is investigated in details for ultra wideband application. A 50 ohm microstrip feed line is used for exciting the antenna. The antenna resonates at multiple frequencies of 4.8 GHz, 5.5 GHz, 9 GHz and 12 GHz respectively with a bandwidth of 2 GHz and 5.2 GHz and can be effectively utilised for several wireless as well as X-band applications. The gain...
Gas hydrates are considered to be one of the promising future sources of energy. The amount of methane sequestered in gas hydrates is enormous. Estimates show that the methane stored in the form of gas-hydrates is in the order of ∼1900 trillion cubic meters within the Indian Exclusive Economic Zone. Under the aegis of the Ministry of Earth Sciences, Government of India, the National Institute of Ocean...
Nowadays integrated circuits (ICs) lose its integrity because aged ICs are being recycled in the new products instead of fresh ICs. Replacing ICs potentially impacts the security and reliability of the electronic systems bound for military, financial and other critical applications. It is important to distinguish the aged ICs from the unused ones. The term aging implies the duration of IC in constant...
This paper details the design, development and qualification of a 500 m depth rated Remotely Operable Vehicle PROVe 500, intended for carrying out scientific research in shallow waters and in challenging Polar Regions. The vehicle with dimensions of 0.96 m × 0.61 m × 0.63 m and weighing 175 kg in air, is designed for a speed of 3 knots at an electric power input of 5 kW. The vehicle which is powered...
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