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Kanti Das B.,Calcutta Institute of Technology | Kumar Jha K.,Calcutta Institute of Technology | Sekhar Dutta H.,Kalyani Government Engg College
Proceedings - 2014 International Conference on Intelligent Computing Applications, ICICA 2014 | Year: 2014

The analysis of blood cells in microscope image can provide useful information concerning the health of the patient. To analyze, identify and diagnose - digital image processing techniques is much more effective than manual observation. The major intension of this paper is to detect the nucleus and cytoplasm of blood cells. The proposed work is useful to detect different kind of disease like anemia, leukemia etc on the basis of the condition of nucleus. This will also helpful for hematologists for clear identification and counting of blood cells. Finally the proposed work designed to obtain effective and more accurate result than other conventional edge detection techniques like Canny, Sobel, and Laplacian of a Gaussian. The result indicates 85% accuracy for identification of different type of cells as well as nucleus. © 2014 IEEE.

Saha S.,Jadavpur University | Saha S.,Kalyani Government Engg College | Wu J.-S.,National Tsing Hua University | Lu T.-H.,National Tsing Hua University | And 2 more authors.
Polyhedron | Year: 2012

1-Alkyl-2-{(o-thioalkyl)phenylazo}imidazole acts as imidazolyl-N donor ligand to Cd(II) although they have potential three donor centres namely N(imidazole), N(azo) and -SR. Two series of complexes [Cd(SRaaiNR /) 2X 2] (X = Cl, Br, I) and [Cd(SRaaiNR /) 4](ClO 4) 2 are synthesized with these ligands. These complexes are spectroscopically (IR, UV-Vis, 1H NMR) characterised and, the single crystal X-ray structures of [Cd(SEtaaiNEt) 2I 2] and [Cd(SEtaaiNEt) 4] (ClO 4) 2 (where SEtaaiNEt = 1-ethyl-2-{(o-thioalkyl) phenylazo}imidazole) have confirmed the distorted tetrahedral structures. The UV light irradiation in MeCN solution of the complexes shows E-to-Z (E and Z refer to trans and cis-configuration about -NN-, respectively) isomerisation of the coordinated azoimidazole. The rate of isomerisation follows the sequence: [Cd(SRaaiNR /) 4](ClO 4) 2 < [Cd(SRaaiNR /) 2Cl 2] < [Cd(SRaaiNR /) 2Br 2] < [Cd(SRaaiNR /) 2I 2]. Quantum yields (φ E →Z) and the activation energy (E a) of the isomerisation of the complexes are lower than that of free ligand data. The observation has been explained considering the molecular association that increases the mass and rotor volume of the complexes. © 2012 Elsevier Ltd. All rights reserved.

Paul D.,SSBB and Senior Member ASQ | Mandal S.N.,Kalyani Government Engg College | Mukherjee D.,B.E.S.U. | Bhadra Chaudhuri S.R.,B.E.S.U.
Renewable Energy | Year: 2010

System efficiency and payback time are yet to attain a commercially viable level for solar photovoltaic energy projects. Despite huge development in prediction of solar radiation data, there is a gap in extraction of pertinent information from such data. Hence the available data cannot be effectively utilized for engineering application. This is acting as a barrier for the emerging technology. For making accurate engineering and financial calculations regarding any solar energy project, it is crucial to identify and optimize the most significant statistic(s) representing insolation availability by the Photovoltaic setup at the installation site. Quality Function Deployment (QFD) technique has been applied for identifying the statistic(s), which are of high significance from a project designer's point of view. A MATLAB™ program has been used to build the annual frequency distribution of hourly insolation over any module plane at a given location. Descriptive statistical analysis of such distributions is done through MINITABTM. For Building Integrated Photo Voltaic (BIPV) installation, similar statistical analysis has been carried out for the composite frequency distribution, which is formed by weighted summation of insolation distributions for different module planes used in the installation. Vital most influential statistic(s) of the composite distribution have been optimized through Artificial Neural Network computation. This approach is expected to open up a new horizon in BIPV system design. © 2010 Elsevier Ltd.

Das S.,Nayagram Bani Bidyapith | Mandal S.N.,Kalyani Government Engg College | Ghoshal N.,Kalyani University
Advances in Intelligent Systems and Computing | Year: 2014

The security level of any symmetric key algorithm is directly proportional to its execution time. The algorithm will be more secured if the number of iteration is increase. Soft computing methods are trying to reduce time complexity without compromise the security level. In this paper, an image has been encrypted by number of steps. At first, a key set has been developed based on 16 arbitrary characters and a large number. The image has been diffused in the next step. The key set and diffused image have been computed by genetic algorithm. Here, ring crossover and order changing mutation operator is used in genetic algorithm. The encrypted image is constructed based on logical operation between the diffused image and key. The effectiveness of the algorithm has been tested by number of statistical tests. Finally, a comparative study has been made between our proposed algorithm and some other algorithms. It has been observed that the proposed algorithm has given better result. © Springer International Publishing Switzerland 2015.

Das K.,Kalyani Government Engg College | Jana S.,Jadavpur University | Kundu P.K.,Jadavpur University
Alexandria Engineering Journal | Year: 2015

The present paper focuses on the analysis of thermophoretic hydromagnetic slip flow over a permeable flat plate with convective surface heat flux at the boundary and temperature dependent fluid properties in the presence of non-uniform heat source/sink. The transverse magnetic field is assumed to be a function of the distance from the origin. Also it is assumed that the liquid viscosity and the thermal conductivity vary as an inverse function and a linear function of temperature, respectively. The shooting method is employed to yield the numerical solutions for the model. Results show that the thermal boundary layer thickness reduces with increase of surface convection parameter whereas reverse effect occurs for viscosity parameter. It is also observed that the thermophoretic parameter decreases the concentration distribution across the boundary layer. © 2014 Elsevier B.V. All rights reserved.

Das K.,Kalyani Government Engg College | Duari P.R.,Jadavpur University | Kundu P.K.,Jadavpur University
Alexandria Engineering Journal | Year: 2014

This paper investigates the unsteady boundary layer flow of a nanofluid over a heated stretching sheet with thermal radiation. The transport model employed includes the effects of Brownian motion and thermophoresis. The unsteadiness in the flow field is caused by the time-dependence of the stretching velocity, free stream velocity and the surface temperature. The unsteady boundary layer equations are transformed to a system of non-linear ordinary differential equations and solved numerically using a shooting method together with Runge-Kutta-Fehlberg scheme. The clear liquid results from this study are in agreement with the results reported in the literature. It is found that the heat transfer rate at the surface increases in the presence of Brownian motion but reverse effect occurs for thermophoresis. © 2014 Production and hosting by Elsevier B.V.

Sarkar A.,Kalyani Government Engg College | De S.,Meghnad Saha Institute of Technology | Dey A.,Kalyani Government Engg College | Sarkar C.K.,Jadavpur University
Journal of Computational Electronics | Year: 2012

We report a systematic, quantitative investigation of analog and RF performance of cylindrical surroundinggate (SRG) silicon MOSFET. To derive the model, a pseudotwo- dimensional (2-D) approach applying Gauss's law in the channel region is extended for the cylindrical SRG MOSFET. Based on surface potential approach, expressions of drain current and differential capacitances are obtained analytically. Analog/RF figures of merit of SRG MOSFET are studied, including transconductance efficiency g m/I d, intrinsic gain, output resistance, cutoff frequency f T, maximum oscillation frequency f max and gain bandwidth product GBW. The trends related to their variations along the downscaling of dimension are provided. In order to validate our model, the modeled predictions have been extensively compared with the simulated characteristics obtained from the ATLAS device simulator and a nice agreement is observed with a wide range of geometrical parameters. © Springer Science+Business Media LLC 2012.

Saha S.,Jadavpur University | Saha S.,Kalyani Government Engg College | Raghavaiah P.,University of Hyderabad | Sinha C.,Jadavpur University
Polyhedron | Year: 2012

The reaction of HgX 2 (X = Cl, Br, I) with 1-alkyl-2-{(o- thioalkyl)phenylazo}imidazole (SRaaiNR′) in MeOH-ethyleneglycol mixture has synthesised [Hg(SRaaiNR′)X 2]. The structure of the products has been established by microanalytical and spectral (IR, UV-Vis, 1H NMR) data, and a distorted Td-geometry has been confirmed by a single crystal X-ray diffraction study of [Hg(SMeaaiNEt)I 2] (SMeaaiNEt = 1-ethyl-2-{(o-thiomethyl)phenylazo}imidazole). The UV light irradiation in CH 3CN solution of the complexes shows E-to-Z (E and Z refer to trans and cis-configurations) isomerisation of the coordinated SRaaiNR′ ligand about the -NN- bond. The rate of isomerisation follows: [Hg(SRaaiNR′) Cl 2] < [Hg(SRaaiNR′)Br 2] < [Hg(SRaaiNR′)I 2]. The quantum yields (φ E →Z) of the isomerisation of the complexes are lower than those of the free ligands. These may be due to increased mass and rotor volume of the complexes. The electronegativity sequence of X (I < Br < Cl) may regulate the molecular association and hence the effective mass of the rotor and the photoisomerisation rates. Thermal isomerisation determines the rate, activation energy (E a), activation enthalpy (Δ H) and activation entropy (Δ S) of the Z → E transformation of the coordinated SRaaiNR′. The E as of the thermal isomerisation of the complexes are lower than those of the free ligands. © 2012 Elsevier Ltd. All rights reserved.

Banerjee A.,Kalyani Government Engg College | Dutta P.,Visva Bharati University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

Ad hoc networks are collections of mobile nodes communicating using wireless media without any fixed infrastructure. Existing multicast protocols fall short in a harsh ad hoc mobile environment, since node mobility causes conventional multicast tree to rapidly become outdated. The amount of bandwidth required for building up a multicast tree is less than that required for other delivery structures, since a tree avoids unnecessary duplication of data. In this article, we propose FSIM, a fuzzy controlled source-initiated intelligent multicast routing scheme that takes into account estimated network evolution in terms of residual energy, link stability, position of receivers in the multicast tree etc. Extensive simulation experiments have been conducted to compare performance of FSIM with state-of-the-art tree and mesh-based multicast protocols. The results with respect to a wide range of input parameters show that FSIM attains significantly higher packet delivery ratio at much lesser cost than its competitors. © 2010 Springer.

Sengupta M.,Kalyani Government Engg College | Mondal S.K.,Kalyani Government Engg College | Saha D.,IIM Calcutta
Proceedings of the ACM Symposium on Applied Computing | Year: 2010

During wavelength reservation in Wavelength Division Multiplexed (WDM) optical networks, often multiple connection requests unknowingly compete for the same wavelength, even when other free wavelengths are available, resulting in a collision. The Markov model used in Markov Based Reservation Protocol (MBRP), is very effective to reduce such conflicts by intelligently guessing a wavelength in advance. Even then a connection request may be blocked because of the vulnerable period between wavelength probing and actual reservation. To minimize the effect of such vulnerability, splitting the probe process to fork out a partial reservation from an intermediate node is an efficient solution. In Markov-selection Split Reservation Protocol (MSRP), the above two strategies are combined, but only one wavelength is guessed during probing. If the attempt with this single wavelength fails, the connection request is blocked. To take care of this limitation, we propose here a new scheme called Multi-wavelength MSRP (MMSRP), where a set of wavelengths (instead of one) is selected by Markov model and continuously updated for possible future use. In case of failure, during reservation in the backward direction, it retries to reserve the next best wavelength through another splitting at the failure point. Thus, MMSRP handles multiple wavelengths sequentially through multiple splitting. Simulation results show that the blocking probability in MMSRP decreases considerably (∼25% over MSRP and ∼50% over MBRP in some cases) as the number of wavelengths increases. Compared to MSRP, though the average setup time is marginally higher in MMSRP, it appears quite promising for delay-tolerant applications, where blocking is very crucial, in dense WDM networks. © 2010 ACM.

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