Muthukumar S.,SVCE |
Journal of Computer Science | Year: 2014
It is imperative for any level of cache memory in a multi-core architecture to have a well defined, dynamic replacement algorithm in place to ensure consistent superlative performance. The most prevalently used LRU replacement policy does not acquaint itself dynamically to the changes in the workload. As a result, it can lead to sub-optimal performance for certain applications whose workloads exhibit frequently fluctuating patterns. To overcome the limitation of this conventional LRU approach, our paper proposes a novel counter-based replacement technique which logically partitions the cache elements into four zones based on their 'likeliness' to be referenced by the processor in the near future. Categorizing the elements into different zones is achieved with the help of a 3-bit counter that is associated with every cache line. On a cache hit, the corresponding element is promoted from one zone to another zone. Replacement candidates are chosen from the zones in the ascending order of their 'likeliness factor' (i.e.,) the first search space for the victim would be the never likely to be referenced zone, followed by the subsequent zones till the most likely to be referenced zone is reached. Periodic zone demotion of elements also occurs to make sure that stale data does not pollute the cache. Experimental results obtained by using the PARSEC benchmarks have shown almost 7% improvement in the overall number of hits and 3% improvement in the average cache occupancy percentage when compared to LRU algorithm. © 2014 Science Publications.
Harinath S.,SVCE |
Murthy U.N.,University Visvesvaraya College of Engineering
Pollution Research | Year: 2012
Air pollution is causing a serious threat to public health in most of the urban centers in the developing countries. The ambient air quality levels in city areas are degrading day after day. The situation is expected to be worsen further with the increase of population, unplanned industries, economic development and influxes of people from rural areas. In this study a social survey was conducted at selected Industrial areas in and around Bangalore city to investigate the effect of air pollution on the human health. It was found that these personnel were directly exposed to the pollution for nearly 8 to 10 hours per day. It is observed that public is suffering from respiratory disorders due to exposure of air pollution. This study also tried to reveal the impact of air pollution on human health and study recommended several strategies to control air pollution with an aim of improving existing air quality of the areas. Copyright © EM International.
Harinath S.,SVCE |
Murthy U.N.,University Visvesvaraya College of Engineering
Pollution Research | Year: 2012
The air quality monitoring study has been carried in industrial areas of Bengaluru city for about three important parameters for the specific period and analyzed as per standards. It is observed that most of the samples are violating the Central Pollution Control Board, India (CPCB) norms. Copyright © EM International.
Reddivari R.,SVCE |
Pruthviraj B.G.,SVCE |
Bharat M.,SVCE |
2016 - Biennial International Conference on Power and Energy Systems: Towards Sustainable Energy, PESTSE 2016 | Year: 2016
Voltage-type Modified Gamma (Γ)-source inverters are proposed in this paper for hybrid electrical vehicles. Z-source inverters are planned for output voltage or current buck-boost ability. Even though there are some boundaries in the Z-source inverters, they are not flexible to provide continuity to inductor currents and also requires low modulation index to produce high gain output. In Z-source inverter switching streb is more, which leads to increasing size, weight and cost of the converter, which are undesirable. In order to minimise such disadvantages, a new methodology is proposed, which uses magnetically coupled transformers or inductors to raise the gain and modulation ratio concurrently, with reduced components. Compared to other topologies, the suggested Gamma (Γ)-source inverters shows matured characteristics in many aspects and the coupled transformer also produces high-gain and modulation ratio at the same time. In future the Gamma (Γ)-source inverters will become an alternative for Z-source inverters because of these advantages. Reducing the size and weight of vehicles further by reducing battery size is also pobible by using a modified Gamma (Γ)-source inverters. The modifications in Gamma (Γ)-source inverters with performance are explained and tabulated clearly in this paper. Performance of proposed topology with R-Load, open loop and closed loop operation of Fuel Cell-Battery operated hybrid vehicle with induction motor as a propeller is validated using MATLAB/SIMULINK software. © 2016 IEEE.
Syed Vasiyullah S.F.,AMSCE |
Proceedings of the 2013 International Conference on Green Computing, Communication and Conservation of Energy, ICGCE 2013 | Year: 2013
Unit commitment in the power system schedules on/off states of generating unit that minimize the total fuel cost. In PBUC, the objective is to maximize the profit of the GENCO in the deregulated environment. In deregulated environment, GENCO's works on the bases of forecasted demand, reserve and price where the objective is to maximize their profit. The proposed method uses payment for power delivered and reserve allocated to solve PBUC problem. The proposed approach has been tested on 3 units system. The results of the proposed method have been compared with traditional unit commitment. © 2013 IEEE.
Proceedings - 2014 6th International Conference on Computational Intelligence and Communication Networks, CICN 2014 | Year: 2014
Pioneering approaches that are effectual and conducive involved in the retrieval of information accessible on the World Wide Web. The distinct features can be used for the retrieval process, but the problem is to how to integrate the feature values. The peculiar features such as texture and color are used for exhibiting the content of an image. In this paper, we introduce a Wavelet and Gabor based Image Retrieval (WAGBIR) system, a Neural Network based architecture for content based image retrieval. This technique uses wavelet transform and Gabor filters features for repository image representation. To enhance factual resemblance match between images Back Propagation Neural network (BPNN) is presented, which guarantees the retrieval of images in an efficient way. To elaborate the effectiveness of the presented work, the proposed method is compared with several existing CBIR systems, and it is proved that the proposed method has performed better than all of the comparative systems. © 2014 IEEE.
Shoba M.,SVCE |
Proceedings of the 2015 International Conference on Green Computing and Internet of Things, ICGCIoT 2015 | Year: 2015
With the current progress in communication technology, Wireless Sensor Network (WSN)s are extensively setup for plethora of applications such as defense, intelligent transportation systems, healthcare and many more. The limitation of sensor node is in terms of resources namely storage, power, processing potential and communication range. For the sensor network to be operational an efficient routing algorithm to forward the arriving packets is essential The data transferred by the nodes will be redundant in most of the scenarios. Selecting the optimal route for data transmission is one of the vital factors from the perspective view point of a routing protocol In order to eliminate the redundancy of data and to enhance the QoS parameters, Statistical Ad-hoc Ondemand Distance Vector (S-AODV) routing protocol is proposed in this paper. This new protocol is analyzed with respect to each layer by taking QoS metrics and statistical parameters in to consideration. A comparative study reveals that the proposed protocol performs better than the present AODV protocol. © 2015 IEEE.
Divya M.,SKR Engineering College |
Janet J.,SVCE |
Suguna R.,SKR Engineering College
Eurasip Journal on Image and Video Processing | Year: 2014
Telemedicine integrates information and communication technologies in providing clinical services to health professionals in different places. Medical images are required to be transmitted for diagnosis and opinion as part of the telemedicine process. Thus, telemedicine challenges include limited bandwidth and large amount of diagnostic data. Content-based image retrieval is used in retrieving relevant images from the database, and image compression addresses the problem of limited bandwidth. This paper proposes a novel method to enable telemedicine using soft computing approaches. In the present study, images are compressed to minimize bandwidth utilization, and compressed images similar to the query medical image are retrieved using a novel feature extraction and a genetic optimized classifier. The effectiveness of compressed image retrieval on magnetic resonance scan images of stroke patients is presented in this study. © 2014 Divya et al.; licensee Springer.
Srisakthi N.,SVCE |
Rama Rao Ch.V.,SAMEER CEM |
International Conference on Communication and Signal Processing, ICCSP 2014 - Proceedings | Year: 2014
Code Division Multiple Access (CDMA) is a widely used multiple access technique in cellular and military communication systems. In Direct Sequence Spread Spectrum (DSSS) communications, a Pseudo Noise (PN) spreading code is typically applied to the data samples prior to transmission. Synchronization of this unique code with the incoming data samples forms a significant step in the data reception process. Single Dwell Serial Search (SDSS) and Matched Filtering are some of the types of CDMA code synchronization techniques. This paper presents the design and comparison of SDSS technique & Digital Matched Filter (DMF), and shows the effectiveness of DMF for rapid synchronization. It further presents Recursive Digital Matched Filter (RDMF) which reduces resource utilization and the obtained results clearly shows that the proposed RDMF has the characteristics that are highly suitable for code synchronization in CDMA application compared to conventional methods. © 2014 IEEE.
Arockia Selvakumar A.,Vellore Institute of Technology |
Arul Kumar M.,SVCE
Procedia Engineering | Year: 2014
Parallel manipulators (PMs) have been the subject of study, of much robotic research during the past three decades. A parallel manipulator (PM) is a closed loop kinematic chain mechanism, that is connected to the base via multiple independent chains. The scope of this research work is to perform the position analyses of the three degrees of freedom PMs (TRIPOD and TRI-GLIDE). The present work has been planned to model the parallel manipulators using the screw joints for very accurate positioning. Experiments were conducted for the position analysis and the angular tilt of the mobile platform along x-axis and y-axis and they were found by actuating the links of the manipulators. In order to confirm the results obtained by the experimental method, ADAMS was used for solving the kinematic problems involved. The Tri-Glide and Tripod manipulators were created in ADAMS based on the fabricated models. The models were simulated for the displacement of the nut and the angle of tilt / rotation of the mobile platform about the x and y axes. The results obtained by the three methods are discussed and analyzed. In a conventional drilling machine, drilling an angular hole requires special fixtures for each specific angle. In the present work, the parallel manipulator mechanisms have been modified to an angular drilling machine, for performing angular drilling operations. © 2014 The Authors.