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Search Results: 1 - 10 of 13999 matches for " Samayveer Singh "
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PERFORMANCE INVESTIGATION OF ROUTING PROTOCOLS OF MOBILE AD-HOC NETWORKS USING CBR AND TCP TRAFFIC
Samayveer Singh
Journal of Global Research in Computer Science , 2011,
Abstract: In this paper we have investigated performance of two reactive MANET routing protocol Ad Hoc On-demand Distance Vector Routing protocol (AODV) and the Dynamic Source Routing protocol (DSR) by using mobility model. Both share similar On-Demand behavior, but the protocol’s internal mechanism leads to significant performance difference. We have analyzed the performance of protocols by mobility and type of traffic (CBR and TCP). A detailed simulation has been carried out in NS2. The metrics used for performance analysis are Packet Delivery Fraction, Average end-to-end Delay. It has been observed that AODV gives better performance in CBR traffic and real time delivery of packet. As a result, more data packets can be received by the destinations in inter-group communications. Hence, the packet delivery ratio is increased as the speed increases. Where as DSR gives better results in TCP traffic and under restricted bandwidth condition. The simulation results reflect that group partitions have a significant impact to the performance of network routing protocols. Keywords- TCP, CBR, AODV, DSR
Energy-Efficient Target Monitoring Algorithm for Wireless Sensor Networks
Samayveer Singh
Journal of Global Research in Computer Science , 2011,
Abstract: In this paper, an energy-efficient target monitoring algorithm for wireless sensor networks have been reported. Here, we have proposed new energy efficient algorithms HADEEPS, based on the scheduling that allow sensor nodes can interchange its state into idle, sleep and active modes. The network lifetime increases with the number of sensors at different targets and sensing range. The simulation results for target supervising protocol, HADEEPS verify that with the adjustable sensing range, heterogeneous nodes and different targets, the overall network lifetime improved as compared with existing protocols.
HETEROGENEOUS PROTOCOLS FOR INCREASING LIFETIME OF WIRELESS SENSOR NETWORKS
Samayveer Singh
Journal of Global Research in Computer Science , 2011,
Abstract: In this paper, the heterogeneous energy-efficient data gathering protocols for lifetime of wireless sensor networks have been reported. The main requirements of wireless sensor network are to prolong the network lifetime and energy efficiency. Here, Heterogeneous - SEP: A Stable Election Protocol for clustered heterogeneous (H-SEP) for Wireless Sensor Network has been proposed to prolong the network lifetime. In this paper, the impacts of heterogeneity in terms of node energy in wireless sensor networks have been mentioned. Finally the simulation result demonstrates that H-SEP achieves longer lifetime and more effective data packets in comparison with the SEP and LEACH protocol.
PERFORMANCE INVESTIGATION OF ROUTING PROTOCOLS OF MOBILE AD-HOC NETWORKS USING CBR AND TCP TRAFFIC
Samayveer Singh
Journal of Global Research in Computer Science , 2011,
Abstract: In this paper we have investigated performance of two reactive MANET routing protocol Ad Hoc On-demand Distance Vector Routing protocol (AODV) and the Dynamic Source Routing protocol (DSR) by using mobility model. Both share similar On-Demand behavior, but the protocol’s internal mechanism leads to significant performance difference. We have analyzed the performance of protocols by mobility and type of traffic (CBR and TCP). A detailed simulation has been carried out in NS2. The metrics used for performance analysis are Packet Delivery Fraction, Average end-to-end Delay. It has been observed that AODV gives better performance in CBR traffic and real time delivery of packet. As a result, more data packets can be received by the destinations in inter-group communications. Hence, the packet delivery ratio is increased as the speed increases. Where as DSR gives better results in TCP traffic and under restricted bandwidth condition. The simulation results reflect that group partitions have a significant impact to the performance of network routing protocols. Keywords: TCP, CBR, AODV, DSR
Energy-Efficient Target Monitoring Algorithm for Wireless Sensor Networks
Samayveer Singh
Journal of Global Research in Computer Science , 2011,
Abstract: In this paper, an energy-efficient target monitoring algorithm for wireless sensor networks have been reported. Here, we have proposed new energy efficient algorithms HADEEPS, based on the scheduling that allow sensor nodes can interchange its state into idle, sleep and active modes. The network lifetime increases with the number of sensors at different targets and sensing range. The simulation results for target supervising protocol, HADEEPS verify that with the adjustable sensing range, heterogeneous nodes and different targets, the overall network lifetime improved as compared with existing protocols. Keywords: WAN, HADEEPS, network model, heterogeneous nodes
3-Level Heterogeneity Model for Wireless Sensor Networks
Satish Chand,Samayveer Singh,Bijendra Kumar
International Journal of Computer Network and Information Security , 2013,
Abstract: In this paper, we propose a network model with energy heterogeneity. This model is general enough in the sense that it can describe 1-level, 2-level, and 3-level heterogeneity. The proposed model is characterized by a parameter whose lower and upper bounds are determined. For 1-level heterogeneity, the value of parameter is zero and, for 2-level heterogeneity, its value is (√5-1)/2. For 3-level of heterogeneity, the value of parameter varies between its lower bound and upper bound. The lower bound is determined from the energy levels of different node types, whereas the upper bound is given by (√5-1)/2. As value of parameter decreases from upper bound towards the lower bound, the network lifetime increases. Furthermore, as the level of heterogeneity increases, the network lifetime increases.
Analysis of Vortex Motion in Porous Media  [PDF]
Beant Singh, Chanpreet Singh
Journal of Electronics Cooling and Thermal Control (JECTC) , 2012, DOI: 10.4236/jectc.2012.22003
Abstract: In vortex motion fluid moves in curve path and the stream lines are curved. When the fluid flows between curved stream line, the centrifugal forces are setup which is counter balanced by pressure forces acting in the radial direction. The vortex motion has two types of curved motion. The first type called free vortex type, the fluid moves due to its own natural effect but energy is not added to fluid when moving in curved path. The second type called forced vortex, in which energy is added to fluid. A two dimensional steady laminar free convective flow of viscous incompressible flow in porous media voids is considered. In this paper the motion of fluid is studied while moving in the porous media. It is studied that the motion of the fluid in the porous media is vortex motion at the low Reynolds’s number, where the motion is laminar motion and the fluid obeys the laws of vortex motion.
Chromohysteroscopy—A new technique for endometrial biopsy in Abnormal Uterine Bleeding (AUB)  [PDF]
Nisha Singh, Bharti Singh
Open Journal of Obstetrics and Gynecology (OJOG) , 2013, DOI: 10.4236/ojog.2013.35A1003
Abstract:

Objective: To evaluate the role of chromohysteroscopy in improving diagnostic accuracy of endometrial biopsy in cases of AUB. Design: Cross sectional interventional study. Materials and Methods: This study was conducted on 60 women with AUB in Dept. of Obst. & Gyne at King George Medical University, Lucknow over a period of one year. All cases underwent diagnostic hysteroscopy followed by chromohysteroscopy using 2% methylene blue dye. Hysteroscopic guided biopsy was taken from stained and unstained areas followed by an endometrial aspiration biopsy from whole uterine cavity. The histopathology results of three samples were compared and analyzed in relation with staining pattern and type of AUB. Data analysis was done on SPSS version 15 of windows 2007. Results: Out of 60 cases, 11cases were found to have non hormonal pathology after chromohysterosopic biopsy. Eight (72.72%) cases were diagnosed by stained endometrial tissue, one (9.09%) by unstained tissue and three (27.27%) by endometrial aspiration. The diagnostic ability of stained tissue biopsy was significantly higher (p = 0.006) than unstained biopsy and endometrial aspiration. Conclusion: Chromohysteroscopy is a simple and effective technique for diagnosing endometrial pathology in cases of AUB.

Evaluation of EO-1 Hyperion Data for Crop Studies in Part of Indo-Gangatic Plains: A Case Study of Meerut District  [PDF]
Davinder Singh, Rajender Singh
Advances in Remote Sensing (ARS) , 2015, DOI: 10.4236/ars.2015.44021
Abstract: Due to the high number of bands in the hyperspectral image, the selection of optimum bands for crop classification is a prerequisite. The Hyperion sensor has 242 spectral bands out of which 143 useable bands were selected. The bands reflected wavelength from 400 to 1000 nm to the VNIR spectrometer and transmitted the band from 900 to 2500 nm to the SWIR spectrometer. Spectral Angle Mapping Classification (SAMC) approach and a multi-scale object oriented method are applied for crop studies. The result obtained from the accuracy assessment by comparing Ground Control Points (GCP) with the help of image spectra shows 78% of overall accuracy. This shows that these data are highly useful in studying the crop diversification.
How Indian CPI and Industrial Production Respond to Global Oil Price Shocks? Regime-Dependent Impulse Responses  [PDF]
Amanjot Singh, Rajdeep Singh
Theoretical Economics Letters (TEL) , 2017, DOI: 10.4236/tel.2017.75102
Abstract: For emerging markets like India, where around 80 percent of the crude requirements are met through imports, it is an imperative task to comprehend impact of global crude oil price shocks on Indian macroeconomic variables. The present study attempts to understand these asymmetric dynamic interactions between global crude oil price shocks and Indian macroeconomic variables by employing Markov switching-Vector Autoregressive (MS-VAR) regime-dependent impulse responses in level forms. The findings hold an important place in the wake of inflation targeting regime adopted by the monetary policy authorities. The findings highlight the existence of two regimes, namely lower and higher oil price variance regimes. The response of industrial production and consumer prices is different towards oil price shocks in different regimes. In the lower oil variance regime, there is negative (positive) relationship observed between crude oil shocks and industrial production (consumer prices). On the other hand, there is a positive equilibrium shift in the industrial production in the higher oil variance regime with cost pushing inflationary pressures in the long run. The findings bear strong implication for the policy makers in their attempt to combat effects of crude oil shocks. As per the findings, the emerging market policy makers should display a cautious approach during higher oil price volatile phases in order to support industrial production and consumer demand.
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