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Search Results: 1 - 10 of 348119 matches for " Dr.S.Senthil Kumar "
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Throughput Analysis of Many to One Multihop Wireless Mesh Ad hoc Network
Dr.S.Senthil Kumar,V.Ponniyin Selvan
International Journal on Computer Science and Engineering , 2011,
Abstract: Mobile ad hoc networks are formed by co operative association of wireless nodes communicating with each other without the use of infrastructure. Every node acts as a router in the network and enables the communication between nodes that are separated over their radio range. Typically in ad hoc networks one or more nodes may act as gateway connecting to the external world. The node acting as the gateway becomes a sink and the throughput capacity of the network in such networks becomes crucial to maintain QOS. This paper investigates throughput of many to one scenarios in wireless mesh network using Ad hoc On Demand Vector (AODV) Routing Protocol. It is proposed to specifically investigate the throughput of one hop, two hop and three hops to the sink in the wireless mesh network. Investigations are also carried out to measure the throughput of the wireless mesh network when the route timeout variable in the AODV routing protocol is decreased.
Dr.S.Ravi kumar
Journal of Global Research in Mathematical Archives , 2013,
Abstract: In this paper we have analyzed the flow of a couple stress fluids in a channel bounded by flexible walls over which a traveling wave of contraction and expansion is imposed resulting in a peristaltic motion. An oscillatory time dependent flow is also imposed on this flow. The non-linear equations governing the flow through magnetic field are solved under long wavelength approximation. The existence of separation in the flow field is discussed for different values of the governing parameters. The behavior of the primary and secondary velocity components, the shear stresses on the wall, the time average fluxes have been analyzed in either case for different sets of parameters.
Dr.S.Durga Rao,Dr.S.Praveen Kumar
Indian Streams Research Journal , 2012,
Abstract: The concept of Internal Marketing (IM) was first proposed in the mid 1970's as a way of achieving consistent service quality – a major issue in the services area. Its basic premise was 'to have satisfied customers, the firm must also have satisfied employees'. This could be best achieved by treating employees as customers, i.e. by applying the principles of marketing to job design and employee motivation. Since then, the concept has seen a number of major developments and its application today is no longer confined to the services area.
G.Glan Devadhas,Dr.S.Pushpa Kumar
International Journal of Engineering Science and Technology , 2010,
Abstract: This paper attempts to tuning out a new PID control strategy to provide Robust Control for a Chemical process. Chemical process control is a challenging problem due to the strong on-line non-linearity and extreme sensitivity to disturbances of the process. The proposed method has the advantage that it takes into account all the parameters variations associated with the process. The variations in the process parameters are modeled as a gaussian noise and an adaptive gaussian filter is placed in the feedback path. The adaptivegaussian filter in the feedback path adapts its filter coefficients based on a kalman estimation algorithm. This adaptive filter adapts so as to maintain the mean square error a minimum. The LQG (Linear Quadratic Gaussian) in Robust Control is used in designing of the proposed strategy. The analysis of a PID tuning [7] strategy and the necessity of such an adaptive strategy is also explored in this paper. The proposed strategy of Robust Control has been designed for a First Order Lag Plus Delay (FOLPD) process. The proposed strategy ofRobust Control has been simulated for an FOLPD process in SIMULINK.
Decoupled Control Of Active And Reactive Powers Of DFIG With Cascaded SPWM Converters.
K.H.Phani Shree,Dr.S.V.Jaya Ram Kumar
International Journal of Engineering Science and Technology , 2011,
Abstract: This paper presents the dynamic modeling and simulation of a doubly fed induction generator (DFIG) driven by wind turbine connected with cascaded converters. A doubly fed induction generator is basically a standard, wound rotor induction machine with its stator windings directly connected to the grid and its rotor windings connected to the grid through converters. Vector control technique is used to obtain decoupled control for powers. This paper investigates on the performance of DFIG with cascaded SPWM inverters. The total harmonic distortion has been calculated with different converters. The model is developed in MATLAB/SIMULINK environment.
“VANET” System for Vehicular Security Applications
Saurabh Kumar Gaur,Dr.S.K.Tyagi,Pushpender Singh
International Journal of Soft Computing & Engineering , 2013,
Abstract: Today the vehicular security and passenger safety is an alarming issue in the field of automobile industry. The technocrats of the companies are very much varied about this issue. Ad hoc network (VANETs) is becoming the mostsuitable solution for this purpose. It provides vehicle to vehicle connectivity. A vehicular Ad hoc network (VANETs) can be used as an alert system. By this we get the alert about the traffic jam. It helps to create balance in traffic load to reduce travelling time. This system is also useful to broadcast emergency signal to the driver of the vehicle behind the accident. It also helps to send message to ambulance and traffic police in the case of traffic emergency. In this paper, we take the position that VANETs would indeed turn out to be the networking platform that would support the future vehicular applications. We analyze the critical factors in deciding the networking framework over which the future vehicular Applications would be deployed. A reactive research effort is needed for making VANETs a reality in the near future.
A General Approach for Direct Conversion of Single Phase AC to AC Converter for Induction Heating System  [PDF]
Dr. P. Umasankar, Dr. S. Senthil Kumar
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.711325
Abstract: This paper signifies the study of modeling and simulation of a single phase matrix converter for induction heating system. The working principle and the control method, using PID are revealing in detail. The performance of the system is carried out in MATLAB/Simulink environment with pulse width modulation switching strategy by varying the duty cycle. PID control is employed to obtain the better performance for a specified input supply for various output frequencies. The proposed control strategy of AC to AC converter has been discussed with a wide range of operating frequencies and results in low Total Harmonic Distortion.
An Unsupervised Active Classification Techique for Face Recognition
Dr.S. Aruna Mastani
International Journal of Engineering Science and Technology , 2010,
Abstract: Generally pattern recognition systems dealing with high dimensional data with very few samples for training are faced with the problem of over fitting. This is the case with appearance based methods of Face Recognition (FR) systems where the pixels form the high dimensional feature vector representing the face images, and only few sample face images are present for training. Over-fitting is a condition where a pattern recognition system recognizes/classify the samples used for training perfectly, but poor enough in recognizing/classifying the unseen samples (testing samples that are not used for training). The reason for this is the less number of samples used for training are unable to cover all the possible variations of testing data that occur due to changes of illumination, expression, pose view point of face images. The two ways to overcome this problem is either to reduce the size of samples by extracting the best discriminant features or to provide with a classifier with enhanced generalizationcapability. Thus development of effective and reliable Face Recognition system boils down to that of representation of patterns (faces) with minimum number of features with most discriminatory information, or to have a strong classification technique that best categorizes the patterns in to different classes. In this paper a method called active classification through clustering is proposed that combines the advantage of feature extraction and simultaneously uses novel approach for classification, by involving the information about the distribution of testing samples along with the training samples. The proposed technique in this paper is based up on this basic thought of involving the active participation of testing samples in the classifier implementation. Considering this as a new approach to face recognition system, experiments are performed using the well known databases ORL, UMIST and Yale and compared with the Existing methods to prove its efficiency.
Indian Streams Research Journal , 2012,
Abstract: Professional development for teachers is the range of formal and informal processes and activities that teachers engage in both inside and outside of the school, in order to improve their teaching knowledge and skills. The ultimate goal of teacher professional development is improving student learning outcomes. Research indicates that teachers have control over many factors that influence motivation, achievement and behaviour of their students. Therefore, professional development focusing on effective classroom management will enhance a teacher's skills and performance in the classroom.
Enhanced Min-Max Procedure based on Block Truncation Coding for Image Compression
International Journal of Recent Technology and Engineering , 2013,
Abstract: In this paper, we have proposed a method based on Block Truncation coding (BTC) for image compression. The existing Min-Max procedure based on BTC is enhanced to further improve the quality of the reconstructed images. Images are decoded using three quantization levels by extending the size of the bitplane. The three quantization levels being Minimum, Maximum and the average of both are preserved for each block. Experiments were carried over standard images like Lena, Cameraman, Boats, Bridge and Baboon. For all images, the proposed method outperforms the existing method in terms of PSNR values.
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