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Kumar T.R.S.,Muthayammal Engineering College | Venkatesh C.,EBET Group of Institutions
IEEE International Symposium on Electromagnetic Compatibility | Year: 2011

While designing the metallic enclosure for the electromagnetic shielding of electronic circuits, apertures on the enclosure walls become unavoidable for the purpose of signal cabling and ventilation. The Conventional Enclosure design involves a repeated procedure where the hole position and locations are varied until the Shielding Effectiveness (SE) requirements met. In this paper Double Layer Frequency Selective Surface (DLFSS) is used to construct the walls of the SMPS Enclosure which involves simple procedure. The FSS constructed from Greek Cross type apertures, etched on the conducting walls without any dielectric substrate (to enable ventilation) act as a spatial band-pass filter. Even though the design objective of the EM Shielding Enclosure is all-stop filter characteristics, the ventilation requirement impose the enclosure to allow certain band of EMI to pass. So the DLFSS is designed to pass a band of EMI at 15GHz which is acceptable to satisfy the EMC and ventilation requirements. DLFSS and Conventional SMPS enclosures are modelled and shielding effectiveness is calculated and compared. © 2011 IEEE.

Velmurugan L.,EBET Group of Institutions | Thangaraj P.,Bannariamman Institute of Technology
Life Science Journal | Year: 2013

WLAN infrastructure planning for maintaining service quality gains importance due to numerous wireless devices getting connected to the internet. To maintain desired service quality users movement pattern should be known. Mobility prediction involves locating mobile device's next access point when it moves through a wireless network. Hidden Markov models and Bayesian approach were suggested to predict next hop This study proposes a new method for feature extraction and suggests a hidden Genetic Algorithm layer-GA-SOFM based new neural network classifier. The hypothesis is evaluated through the use of a month long syslog data of Dartmouth college mobility traces available online. This extracts mobility features and uses them to find the proposed model's classification accuracy.

Sathishkumar T.P.,Kongu Engineering College | Navaneethakrishnan P.,Kongu Engineering College | Shankar S.,Kongu Engineering College | Kumar J.,EBET Group of Institutions
Journal of Composite Materials | Year: 2013

Composite materials are extensively used in the structural applications due to its enhanced load-bearing capabilities. Mostly, the mechanical properties of the natural fiber-reinforced hybrid composites are better than the single fiber-reinforced composites and almost equal to the synthetic fiber composites. This paper presents the extraction and preparation methodology of the isophtallic polyester composites using the naturally available fibers like snake grass, banana and coir fibers. The tensile and flexural properties of the snake grass fiber-reinforced composites are compared with the snake grass/banana and snake grass/coir fiber-reinforced hybrid composites. The stress-strain curves of the snake grass, snake grass/banana and snake grass/coir fiber composites and the fiber pull-outs in the fractured specimen are analyzed for the higher and lower mechanical properties. The result shows that the snake grass/banana and snake grass/coir fiber composites have the maximum tensile and flexural properties when compared with the snake grass fiber composites. © The Author(s) 2012 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav.

Deepikaa B.,EBET Group of Institutions | Umamakeshwari D.,EBET Group of Institutions
Proceedings of 2nd IEEE International Conference on Engineering and Technology, ICETECH 2016 | Year: 2016

Power consumption of VLSI has become a leading design concern with the growth of complexity and density. Leakage power reduces battery life for the entire portable battery operated devices. Many techniques have been projected to reduce the leakage power consumption, but most of these approaches require the process technology support. Input Vector Control is one of the approaches used for static power reduction in standby mode. Minimum leakage vector is the input vector to which a circuit can suggest a minimum leakage for a certain set of test patterns. This paper presents Minimum Leakage Vector for various test circuits using genetic algorithm. The different modules of Genetic algorithm are programmed by VHDL language and simulation is performed by Xilinx 8.1i and modelsim. Results explore that heuristic approaches can be considered as better algorithms in finding optimum solution. Another improvement begins during simulation is that implementation of algorithm in HDL converges in lesser number of iterations with runtime savings compared to random search method. © 2016 IEEE.

Sathya K.,EBET Group of Institutions | Manimala V.,EBET Group of Institutions
Proceedings of 2nd IEEE International Conference on Engineering and Technology, ICETECH 2016 | Year: 2016

AES represents the algorithm for advanced encryption standard consistof different operations required in the steps of encryption and decryption. The proposed architecture is based on optimizing area in terms of reducing no of slices required for design of AES algorithm in VHDL. This paper presents AES-128 bit algorithm design consist of 128 bit symmetric key. The AES implementation, merging technique has been used wherein ShiftRows, MixColumns and AddRoundkeys transformations are performed in a single VLSI module. © 2016 IEEE.

Meera S.,EBET Group of Institutions | Prabhu A.S.,EBET Group of Institutions
Proceedings of 2nd IEEE International Conference on Engineering and Technology, ICETECH 2016 | Year: 2016

Reducing power acting a vital role in low power VLSI design. Reducing the power consumption not only can boost battery life but also can avoid the overheating problem, which would increase the difficulty of packaging or cooling. Multi-bit flip-flop is an effective power-saving implementation method by merging single-bit flip-flops in the design. Compare the performance of both single bit flip flop and multi bit flip flop. These results in favor of Multi-Bit Flip-Flop as decrease of Clock network such as clock buffer and gate delay. In this paper, we propose agglomerative clustering algorithm to find the nearby clustering of flip flops for merging the flip flops. This algorithm finds the clusters of flip flop and finally join FFs to reduce the wire length. © 2016 IEEE.

Mohanraj E.K.,EBET Group of Institutions | Kandasamy S.,Anna University | Malathy R.,Excel Engineering College
Journal of the South African Institution of Civil Engineering | Year: 2011

This paper is based on a study that was done by utilising construction and demolition debris that had been effectively recycled, in structural members. The steel tubular columns were filled with different types of waste material, as well as recycled aggregate concrete, instead of normal conventional concrete. The results were subsequently analysed. The behaviour of circular and square concrete-filled steel tubular sections (CFSTs) under axial load, in which coarse aggregate had been partially replaced by recycled aggregates, is presented. The effects of steel tube dimensions, shapes and the confinement of concrete are also examined. Measured column strengths are compared with the values predicted by Eurocode 4, Australian Standards and American Codes. Twelve specimens were tested with 20 MPa concrete and steel sections with diameter-to-thickness ratios of 18,5, 25,3 and 36,0. The columns were of two different shapes - a circular-shaped set with diameters of 76 mm and 89 mm, and a square-shaped set with sizes 72 mm and 91 mm. The circular-shaped columns of 76 mm diameter and the square-shaped columns with 72 mm diameter are 900 mm long. The circular columns with a diameter of 89 mm and the square columns of 91 mm diameter are 350 mm long. Eurocode 4 (EC4) gives the best estimation for both conventional and recycled aggregate concrete. However, the American Concrete Institute (ACI) / Australian Standards (AS) equation predicted lower values than measured during the experiments. Hence the ACI/AS equation has been modified by introducing a multiplying factor 'k' to predict good results for columns of L/D < 12. The values of k factor for L/D ratio varying from 4 to 12 are suggested in this study. From the results it has been noted that square columns save 30% of steel when compared with circular columns. It was also observed that the ultimate load of steel tubular columns filled with recycled aggregate concrete is higher than that of conventional concrete and columns filled with recycled aggregate concrete, and can result in a 10% saving in the cost of concrete. This research therefore proposes a solution for effective solid waste management, which will also prove to be cost effective.

Kittusamy S.R.V.,EBET Group of Institutions | Chakrapani V.,EBET Group of Institutions
Journal of Computer Science | Year: 2012

A challenging research topic is to make the Computer Systems to recognize facial expressions from the face image. A method of facial expression recognition, based on Eigenspaces is presented in this study. Here, the authors recognize the user's facial expressions from the input images, using a method that was customized from eigenface recognition. Evaluation was done for this method in terms of identification correctness using two different Facial Expressions databases, Cohn-Kanade facial expression database and Japanese Female Facial Expression database. The results show the effectiveness of proposed method. © 2012 Science Publications.

Samiappan D.,Anna University | Chakrapani V.,EBET Group of Institutions
International Review on Computers and Software | Year: 2013

The Cardio Vascular Disease (CVD) is the most fatal disease in the world in terms of deaths. The cardio vascular disease, associated with stroke and heart attack, is mainly caused by the increase in calcium deposition in the carotid artery. The Intima-Media Thickness (IMT) of the Common Carotid Artery (CCA) is widely used as an early indicator of CVD. The risk of CVD varies with age groups and this can be categorized based on the texture pattern of image of the carotid artery. This work presents an automated method to classify the carotid artery abnormalities by determining an appropriate Region of Interest (ROI), extracting the texture features, and calculating the IMT. The Ultrasound specimen image is acquired, intensity normalized, pre-processed to remove the speckle noise and then segmented. The texture analysis for segmented images is done using AM - FM techniques. The instantaneous values of the amplitude and frequency of each image specimen is obtained and it is quantized. It is then compared with the standard texture pattern, to identify whether the artery is normal or abnormal. Simulation results shows significant texture differences between the higher-risk age group of >60 years and the lower-risk age group of <50 and the 50-60 age group. Detecting the level of CVD was done by measuring the IMT. The overall process aims at implementing a fully automated system which helps in avoiding human errors, while measuring these values. The measurement technique is described in detail, highlighting the advantages compared to other methods and reporting the experimental results. Finally, the intrinsic accuracy of the system is estimated by an analytical approach. It also decreases inter-reader bias, potentially making it applicable for use in cardiovascular risk assessment. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.

Karunakaran P.,Erode Sengunthar Engineering College | Venkatesh C.,EBET Group of Institutions
European Journal of Scientific Research | Year: 2012

Today Internet users can prefer their local Internet service providers (ISPs) for internet connection. But once their packets came into the network, users' had a slight control over the overall routes their packets take. Giving a user the capability to prefer between provider-level routes has the possible of nurturing ISP rivalry to present improved service and enhancing end-to-end performance and reliability. Besides, allowing the user to select the routes, improves reliability. A user use multi-path routing to improve the reliability for mission-critical applications. Existing work presents the design of a new Internet routing architecture (NIRA) that provides a user the capacity to prefer the order of providers. The issues of NIRA are realistic provider compensation, efficient route representation, scalable route discovery, fast route fail-over, and security. To implement the routing architecture, a new mechanism, In-Time Route Discovery Mechanism (IRDM), is presented in this paper. The In-Time Route Discovery Mechanism (IRDM) is integrated with NIRA which provides user option without organizing a global routing protocol. IRDM is used to count the user demand of route passage and destination point at different instances. The IRDM with NIRA provides an efficient users' choice for routing the packets in their own way. Predefined route structure are maintained at different routing points (switches, routers, hub, etc.,) based on the proactive routing mode. We evaluate NIRA with IRDM using parameters such as routing node counter variance and number of service provider. The evaluation results shows that NIRA with IRDM supports user options for routing mechanism with less overhead. © EuroJournals Publishing, Inc. 2012.

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