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Krishnakumar T.,Tagore Institute of Engineering and Technology
International Journal of ChemTech Research | Year: 2015

ZnO nanostructures have been successfully prepared by microwave irradiation method. The synthesized samples were characterized by X-ray Diffraction method (XRD), Scanning electron microscope (SEM), Transmission Electron microscopy (TEM), and Energy Dispersive X-ray Analysis (EDAX) and Fourier Transform Infrared Spectroscopy (FTIR) technique. The absorption edge and band gap of ZnO were calculated by UV-visible spectra. Highly crystalline ZnO nanostructures have been obtained by the microwave assisted procedure. Furthermore, the formation of these ZnO nanostructures can be obtained within short times (5, 10 and 15 minutes) by a fine tuning of the microwave irradiation. © 2015, Sphinx Knowledge House. All rights Reserved.

Kumar S.,Bihar University | Neri G.,Messina University | Krishnakumar T.,Tagore Institute of Engineering and Technology
Applied Surface Science | Year: 2013

A microwave-assisted combustion route for the preparation of cadmium oxide (CdO) nanowire is carried and its characterization results are discussed. This method resembles a supportive way in the formation of CdO nanowire which is confirmed with the structure and morphological analysis carried for the prepared sample. Microwave combustion method is a cost effective and less time consumption to achieve CdO nanowires. The controlled shapes and size are attained due to microwave irradiation. Yielded sample is investigated with Fourier transformation infra-red (FTIR) spectra, X-ray diffraction (XRD) pattern, energy dispersive X-ray (EDX) spectra and transmission electron microscopy (TEM) with SAED pattern. The formation of CdO phase with a face centered cubic structure is confirmed from XRD spectra and the presence of Cd-O metallic bond is also confirmed with FTIR spectra. The formation of CdO nanowires is visualized through the TEM images and presence of elements is also recorded from EDX spectra. © 2012 Elsevier B.V. All rights reserved.

Sengan S.,Tagore Institute of Engineering and Technology
Journal of Computer Science | Year: 2012

Problem statement: Mobile Ad-hoc Network is infrastructureless network supported by no fixed trusted infrastructure. The packets had a chance to drop or hacked by eavesdropper during transmission. So, encryption method is required for sending and receiving packet in secret manner. Approach: In this approach, the block and key size had been increased by 256 bits. When compared to Rijndael algorithm, it was more secure and effective. To attain security goals like: authentication, integrity, non- repudation, privacy, a secret key was necessary to be shared between the sender and receiver. For data communication, we use MAC address for exchanging packet with encrypted key exchange system. Results: For encryption, In Rijndael algorithm the whole data had to be run twice but our proposed algorithm would encrypt the whole data and run once. The encryption was done with neighborhood key and with message specific key for the enhancement of security. Conclusion: In our algorithm, the time required to break an encryption scheme is excessive as the key size is larger. Here the security is focusing the application level. The forward and backward security is ensured with neighborhood and with message specific key for the route discovery. © 2012 Science Publications.

Krishnakumar T.,Tagore Institute of Engineering and Technology | Leonardi G.,Messina University | Neri G.,Messina University
Sensors and Actuators, B: Chemical | Year: 2012

CdO hexagonal sheets were prepared by a simple chemical route assisted by microwave irradiation. Two different preparation procedures were adopted and characterized in the presence of urea as a directing agent and poly-vinyl-pyrrolidone (PVP) as a surfactant. The morphological and microstructural characteristics were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) analysis, diffuse reflectance infrared spectroscopy (DRIFT) and X-ray powder diffraction (XRD). Characterization results have demonstrated that, after annealing at 300 °C, the formation of CdO hexagonal sheets with different thickness. Thicker sheets were obtained when urea and PVP were used. Chemoresistive devices consisting of a thick layer of CdO hexagonal sheets on interdigitated alumina substrates had been fabricated and their electrical and sensing characteristics were investigated. The sensor performances of the CdO sheets for carbon monoxide were reported. The results indicated that both the sensors exhibited high response and quick response-recovery dynamics. The sensing properties were explained in terms of rapid gas diffusion onto the sensing layer surface. © 2012 Elsevier B.V. All rights reserved.

Rangasamy R.,Tagore Institute of Engineering and Technology | Periasamy P.,Coimbatore Institute of Technology
ICCAS 2015 - 2015 15th International Conference on Control, Automation and Systems, Proceedings | Year: 2015

wireless sensor network employed mobile sinks to collect a set of samples from sensor field. Low-cost and small sensor devices contain various resource restrictions that introduce new challenges for data collection and aggregation in sensor networks. Among these limitations, energy is usually the primary concern when designing an in-network algorithm. The main task of sampling the sensor field is to manage the energy efficiency of the sensor source nodes when sharing out the data to the target node. The path of sending the sensor data is effectively recognized however uses more cost to forward sensor data packet. To improve the mobile sampling in sensor field, a novel method is designed to plan synchronize numerous sampling tasks. It is feasible by the sensor nodes to hold numerous sampling tasks, started by means of the same or different mobile objects in which the sampling regions gets overlapped. So, it is attractive to include an effective synchronization mechanism so that overlapped regions required only one reply for the sampling tasks. Here, a geometric series method is presented as a synchronization mechanism to synchronize the numerous sampling tasks to help the rebroadcast system by utilizing only the minimum amount of energy. Experimental simulations are carried out to calculate the performance of the proposed synchronizing numerous sampling tasks in sensor field using geometric series [SNSTGS] system against Band-based Directional Broadcast by means of average number of messages, overlap percentage, data deliverability. © 2015 Institute of Control, Robotics and Systems - ICROS.

Surendiran S.,Tagore Institute of Engineering and Technology | Thangavel S.,KS Rangasamy College of Technology
ARPN Journal of Engineering and Applied Sciences | Year: 2016

In this paper, Time Varying Acceleration Coefficients with Dominant Social Component (TVACDSC), Time Varying Acceleration Coefficients (TVAC) and Fixed Acceleration Coefficients (FAC) Particle Swarm Optimization (PSO) techniques are proposed to optimize the proportional, integral and derivative gains of PID controller for two equal area interconnected power system. The performance index is considered as minimization of Integral of Time weighted Absolute value of Error (ITAE). Main purpose of this interconnected power system is to provide better quality of power to consumers. For this reason, the responses are analyzed and compared with the responses of Gravitational Search Algorithm (GSA) in terms of rise time, settling time, peak overshoot, peak undershoot and peak time. Finally, suggested the better optimization technique to provide better quality of supply to consumers in interconnected power system. © 2006-2016 Asian Research Publishing Network (ARPN). All rights reserved.

Hemanandh S.,Sathyabama University | Sivasubramanian A.,Tagore Institute of Engineering and Technology
Asian Journal of Information Technology | Year: 2016

This study describes Fast Fourier Transform implementation using fused floating point operations in parallel fashion. The Fast Fourier Transform processors use butterfly unit for computations on complex data. These operations are performed by FFT processors using complex butterfly operations that consist of multiplication, addition and subtraction operations. The main contribution in this research includes a radix-8 butterfly unit with higher efficiency. Also this butterfly unit performs faster than the conventional butterfly. The area required is reduced with the use of FFT Floating Point Butterfly unit as compared to the conventional butterfly unit. The complete architecture is synthesized and simulated using Xilinx ISE Software. The comparison of our proposed method with similar FFT architecture using radix-4 exhibited about 26.36% reduction in area and about 50.22% reduction in overall power consumption. © Medwell Journals, 2016.

Vasanthi R.,Tagore Institute of Engineering and Technology | Wahidabanu R.S.D.,Salem College
Journal of Computer Science | Year: 2012

Problem statement: Pervasive computing refers to visionary new ways of applying Information and Communication Technologies (ICT) to our daily lives. Interoperability among pervasive networked systems, in particular accounting for the heterogeneity of protocols from the application down to the middleware layer, which is mandatory for today's and even more for tomorrow's open and highly heterogeneous networks. Approach: The high demand of mobile and wireless network for Ubiquitous computing, motivate to present an Adaptable Service Component Interface Framework (ASCIF) to efficiently build pervasive computing environment suiting to recent needs of heterogeneity networks (Desktop, Web and Mobile applications). Results: In this Adaptable service component interface framework in pervasive computing gives, how a domain specific language for service composition can be designed to capture the common design patterns for service composition. Conclusion: Adaptable Service Component Interface Framework for constructing pervasive computing environment to fulfils the interoperability and manageability requirements of Web services based applications. The interactive service components are developed as application programming interface entities to bind with different heterogeneity environment. © 2012 Science Publications.

Rajasekar R.,Tagore Institute of Engineering and Technology | Prakasam P.,Tagore Institute of Engineering and Technology
Wireless Personal Communications | Year: 2015

This paper proposes a new coordinating multiple sampling tasks in sensor field using geometric progression (CMSTGP) algorithm technique for enhancing the mobile sampling in wireless sensor networks. It is possible by the sensor nodes to have multiple sampling tasks, initiated by the same or different mobile objects, whose sampling regions overlap. Hence, it is desirable to have an efficient coordination mechanism such that overlapped regions need reply only once for the sampling tasks. A geometric progression technique is proposed in this research work as a coordination mechanism to coordinate the multiple sampling tasks to facilitate the rebroadcast scheme by consuming minimum energy. Experimental simulations have been conducted to estimate the performance of the proposed coordinating multiple sampling tasks in sensor field. The performance of the proposed algorithm has been analyzed in terms of average number of messages, overlap percentage and Throughput. From the simulated results it has been reported that the proposed CMSTGP algorithm reduces the overlapping percentage upto 8 % and increases the throughput of 70 % when compared with existing Band-based Directional Broadcast method. © 2015, Springer Science+Business Media New York.

Abinaya N.S.,Tagore Institute of Engineering and Technology | Prakasam P.,Tagore Institute of Engineering and Technology
2014 International Conference on Electronics and Communication Systems, ICECS 2014 | Year: 2014

Today cryptography is an integral part of our lives. PRNG's are used in modern cryptography. The maximal length PN-sequence (m-sequence) is the best known best-described PN-sequence whose length is equal to its period. Various PN-codes can be generated using Linear Feedback Shift Register (LFSR). The generator polynomial provides the necessary feedback taps for the LFSR circuit. The implementation of the LFSR circuit with VLSI technology makes it useful in low-power communication system design. This paper presents the performance comparison of 4 bit LFSR method with BBS and the reported results show that LFSR is more suitable for cryptographic application. © 2014 IEEE.

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