Supreme Knowledge Foundation Group of Institutions

Hugli, India

Supreme Knowledge Foundation Group of Institutions

Hugli, India
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Banik P.,Supreme Knowledge Foundation Group of Institutions | Ganguly A.,Indian Institute of Science
Solar Energy | Year: 2017

Humidity imparts an adverse effect upon a conventional fan-pad ventilated greenhouse in the tropical and subtropical countries. In the present work, a novel scheme of a desiccant assisted distributed fan-pad ventilated greenhouse system has been proposed for the cultivation of varieties of Gerbera. A thermal model of the proposed system has been developed to predict the greenhouse temperature and compare the same with a reference model study available in literature. To regenerate the desiccant materials, solar thermal energy is used which is harnessed using a number of flat plate collectors. Study reveals that, while the maximum temperature inside the conventional greenhouse without desiccation is about 28.8 °C, the same can be maintained below 27 °C even during the peak sunshine hours of the summer season with the proposed system for the place under consideration (plains of Indian sub-continent). During the monsoon season (June), the maximum greenhouse temperature can be restricted within 26.6 °C with the present system, while during the same period the temperature of the conventional fan-pad ventilated greenhouse reaches about 28.8 °C. A cumulative cash flow model has also been included in the study to examine the payback period and the Net Present value (NPV) of the proposed system. From the economic analysis, it is observed that the payback period of the system is about 6 years, while the NPV is about $9090 (assuming a service life of 15 years) considering the price of Gerbera to be $0.15. The system thus reinforces the viability of the proposed system both from technical and economic point of view. © 2017 Elsevier Ltd


Mukherjee S.,Supreme Knowledge Foundation Group of Institutions | Ghosh S.,West Bengal University of TechnologyWest Bengal
Foundations and Frontiers in Computer, Communication and Electrical Engineering - Proceedings of the 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering, C2E2 - 2016 | Year: 2016

Edge detection technology is best demonstrated by the edge avoider robot, a mobile device, which “senses” and “avoids” the absence of the surface below it. Demonstration of the concept of edge detection technology is done with the help of a microcontroller that also helps the robot to prevent it from falling. The specific microcontroller used here is the P89V51RD2 microcontroller, also known as the “bit and byte processor”, which is programmed accordingly for the specified action of edge avoiding. The goal of the robot is to drive forward as long as it does see the floor, turn away from the side when one IR sensor does not detect an obstacle, and withdraw when neither IR sensor detects an obstacle. This activity could be done on a tabletop, but the results might be disastrous to the robot if something goes wrong. © 2016 Taylor & Francis Group, London.


Bhabani B.,Supreme Knowledge Foundation Group of Institutions
Foundations and Frontiers in Computer, Communication and Electrical Engineering - Proceedings of the 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering, C2E2 - 2016 | Year: 2016

Cloud computing has emerged as one of the most promising and challenging technologies at present. Cloud Service Broker (CSB) creates a governed and secure cloud management platform to simplify the delivery of complex cloud services to cloud service customers. They enable customers to realize the full potential that cloud provider has to offer. CSB leads to creation of a system of highly distributed, task-oriented, modular, and collaborative cloud services managed by a broker. In order to effectively manage the complexity inherent in such systems, enterprises are anticipated to crucially depend upon CSB mechanisms. Here in this paper, an improved approach is proposed that serves secure brokerage in multi-cloud environment. © 2016 Taylor & Francis Group, London.


Nandi K.,Supreme Knowledge Foundation Group of Institutions | Lahiri A.,Supreme Knowledge Foundation Group of Institutions
Foundations and Frontiers in Computer, Communication and Electrical Engineering - Proceedings of the 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering, C2E2 - 2016 | Year: 2016

In order to improve the accuracy and reliability of the diagnosis of a patient’s cardiac condition, the first important requirement is to denoise the Electrocardiograph (ECG) signal before recording it. The most common noises that are present in an ECG signal are due to the baseline wander and the power line interference. So far, different types of adaptive and non-adaptive digital filters have been proposed to remove these noises from an ECG signal. In this paper, the Kalman filter coupled with the median filter was applied to denoise ECG signals. To evaluate the performance of this method, a simulated ECG signal corrupted with 0.25 Hz and 50 Hz signals was considered. The method was then extended to the ECG signals available in the MIT-BIH arrhythmia database. The accuracy of the proposed Median–Kalman (M-K) filter was measured by the detection rate of the R-peak of the denoised signal and is discussed in this paper. © 2016 Taylor & Francis Group, London.


Sahu S.K.,Supreme Knowledge Foundation Group of Institutions | Nandi K.,Supreme Knowledge Foundation Group of Institutions
Foundations and Frontiers in Computer, Communication and Electrical Engineering - Proceedings of the 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering, C2E2 - 2016 | Year: 2016

This paper presents a novel, cheap, and unique adaptation technique of a PC-based temperature measurement system. This adaptation revolves around a 555 timer, made to operate in an astable multivibrator configuration. The negative temperature coefficient thermistor is used in this mode, which acts as a timing resistor of the astable multivibrator using the 555 timer. The ‘HIGH’ and ‘LOW’ level durations from the multivibrator output are taken for consideration, and these values are used to determine the temperature by the appropriate training of artificial neural network. © 2016 Taylor & Francis Group, London.


Banerjee A.,Academy of Technology | Biswas B.,Supreme Knowledge Foundation Group of Institutions
IEEE Journal of Quantum Electronics | Year: 2017

In this paper, we analyze the phase-locking phenomenon in a single-loop optoelectronic microwave oscillator, when subjected to the influence of small radio-frequency (RF) signal. We derive the differential equations for the amplitude and phase variations in the oscillator. Using quasi-linear approximation, analytical expressions for the lock range and phase-shift after phase-locking are presented. In addition, beat frequency of the unlocked-driven optoelectronic oscillator (OEO) is obtained and the phase-locking dynamics of the driven oscillator is discussed. Also, the spectrum components of the pulled OEO is derived as a function of the frequency detuning, lock range, beat-frequency, and frequency-shift induced by the phase perturbation of the injection signal. It is shown that all the analytical closed-form expressions clearly demonstrate the phase-locking mechanism starting from the fast-beat state through the quasi-locked state to the locked state of the pulled OEO. Finally, the simulation results are given to validate the analytical results. © 2017 IEEE.


Acharyya A.,Cooch Behar Government Engineering College | Ghosh S.,Supreme Knowledge Foundation Group of Institutions
International Journal of Electronics | Year: 2017

Multiple quantum barriers have been used to suppress the dark current of nanoscale avalanche photodiodes (APDs). The n+–π–p+-structured Si–3C-SiC heterojunction-based multiple quantum barrier (MQB) APDs are considered and a detailed model of dark current has been developed from the self-consistent solution of the coupled Schrödinger–Poisson equations. Four major types of electron–hole pair (EHP) generation mechanisms such as (1) thermal generation, (2) band-to-band tunnelling generation, (3) trap-assisted tunnelling generation and (4) avalanche generation are considered for calculating variation of the total dark current with reverse bias voltage. It is observed that the dark current can be suppressed significantly by increasing both the number and thickness of quantum barriers. However, the authors have also admitted that both the number and thickness of quantum barriers cannot be increased indefinitely, since it will cause deterioration in spectral response of the device in near-infrared range (λ < 1100 nm). © 2017 Informa UK Limited, trading as Taylor & Francis Group


Ghosh M.,Supreme Knowledge Foundation Group of Institutions | Mondal M.,Supreme Knowledge Foundation Group of Institutions | Acharyya A.,University of Calcutta
Advances in OptoElectronics | Year: 2013

The authors have made an attempt to investigate the effect of electron versus hole photocurrent on the optoelectric properties of p+-p-n- n+ structured Wurtzite-GaN (Wz-GaN) reach-through avalanche photodiodes (RAPDs). The photo responsivity and optical gain of the devices are obtained within the wavelength range of 300 to 450 nm using a novel modeling and simulation technique developed by the authors. Two optical illumination configurations of the device such as Top Mounted (TM) and Flip Chip (FC) are considered for the present study to investigate the optoelectric performance of the device separately due to electron dominated and hole dominated photocurrents, respectively, in the visible-blind ultraviolet (UV) spectrum. The results show that the peak unity gain responsivity and corresponding optical gain of the device are 555.78 mA W-1 and 9.4144×103, respectively, due to hole dominated photocurrent (i.e., in FC structure); while those are 480.56 mA W-1 and 7.8800×103, respectively, due to electron dominated photocurrent (i.e., in TM structure) at the wavelength of 365 nm and for applied reverse bias of 85 V. Thus, better optoelectric performance of Wz-GaN RAPDs can be achieved when the photocurrent is made hole dominated by allowing the UV light to be shined on the n+-layer instead of p+-layer of the device. © 2013 Moumita Ghosh et al.


Biswas B.N.,Supreme Knowledge Foundation Group of Institutions | Varshney A.K.,Supreme Knowledge Foundation Group of Institutions
Proceedings of the 2015 International Conference on Microwave and Photonics, ICMAP 2015 | Year: 2015

Reflex Klystron Oscillator has been studied again to explore the effects of considering bunching parameter X greater than one. It is observed that as X exceeds unity, the relation between the departure time and the arrival time of the bunched electrons becomes as multivalued function and the Fourier component of the beam current comprises not only the in phase term but also quadrature terms and the equivalent circuit consists of linear negative conductance as well as a non linear reactive part. © 2015 IEEE.


Ghosh B.K.,Supreme Knowledge Foundation Group of Institutions
Asian Journal of Agricultural Research | Year: 2011

This study deals with the study of the diversification of agricultural activities of the West Bengal, one of the leading agricultural state in India. Using the Minhas and Parikh substitution and expansion effects methodology this study revealed that the cropping pattern in West Bengal in terms of allocation of acreage had been skewed towards food grain. However, during the last fifteen to twenty years some important crops (boro rice, potato, oilseeds, especially mustard) emerged as the main crop for the farmers. The cropping pattern turned against pulses, coarse cereals and sugarcane. It was also found that in the cropping pattern changes the expansion effect could explain 54.69% of the gross cropped area and the remaining 45.31% of the gross cropped area was due to the substitution effect. © 2011 Knowledgia Review, Malaysia.

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