Informatics Publishing Limited

R. M. Gomathi ¹, J. Martin Leo Manickam ², K. Nagamani ³

Affiliations
1 Department of IT, Faculty of Computing, Sathyabama University, Chennai - 600119, Tamil Nadu, IN
2 Department of ECE, St. Joseph’s College of Engineering, Chennai - 600119, Tamil Nadu, IN
3 Center for Remote Sensing and Geo Informatics, Sathyabama University, Chennai - 600119, Tamil Nadu, IN

Abstract

Background/Objectives: Underwater wireless sensor network has widely influenced the scientist to explore the data and to study the underwater environment deep inside the ocean. Methods: The new clustering technique which is effective in prolonging the lifetime of the underwater nodes. An AODV (Ad-Hoc on-Demand Vector) routing protocol has been used in order to find the shortest path between nodes. SNR (Signal-to-Noise Ratio) based dynamic clustering mechanism partition the nodes into various clusters and select the Cluster Head (CH) among the nodes based on energy whereas other nodes join with a specific CH based on the SNR values the clustering technique is effective in prolonging the lifetime of the UWSN (Underwater Sensor Network). Findings: Due to the mobility nature of underwater sensors, ocean currents and unique characteristics of acoustic signals such as long propagation delay, low bit error rate, low bandwidth make the transmission period longer. Hence more energy is consumed by the sensor nodes while transmission. Our proposed system introduces signal to noise ratio based clustering mechanism which improves the energy consumption of network and minimizes the transmission delay. Applications/Improvements: The simulation result verifies the effectiveness and feasibility of the proposed technique and also shows increased rate in PDR (Packet Delivery Ratio) and less energy consumption.

Keywords

Ad-Hoc on-Demand Vector Routing, Cluster Head Component, Signal to Noise Ratio, Underwater Sensor Network.

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Yogita Jiwane ¹, K. Nagamani ²

Affiliations
1 Disha College, Raipur, Chhatisgarh, IN
2 Kalyan P.O. College, Bhilai Nagar, Chhatisgarh, IN

Abstract

The present study aims to find out the main and interactional effect of defence mechanism and background variables locale (2), gender (2) on self expression of high school students. The study was conducted on a sample of 300 high school students. Stratified purposive sampling technique was used to data collection. 2x2x2 factorial design was used to see the main and interactional effect. Locale, gender and defence mechanism were the independent variable whereas scores on self expression was the dependent variable. Defence mechanism Inventory developed by N.R.Mrinal and Uma Mrinal was used. This inventory consist 200 items. It measure five dimensions of defence mechanism and self expression Inventory developed by Verma and Usha Mishra was used to measure two dimensions of self expression. The Result revealed that the three way interactional effect between locale*gender*defence mechanism on self Expressions of high school students have not been found to be significant.

Keywords

Locale, Gender, Defence Mechanism, Self Expression, High School Students.

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Yogita Jiwane ¹, K. Nagamani ²

Affiliations
1 Disha College, Raipur,Chhatisgarh, IN
2 Kalyan P.O. College, Bhilai Nagar, Chhatisgarh, IN

Abstract

The present study aims at investigating the defence mechanism of private and government high school students. The study was conducted on a sample of 100 high school students of Raipur district (C.G) in which 50 were from Private high school students and 50 were from government high school students. Systematic sampling technique was used for data collection. The tool was used Defence Mechanism Inventory developed by Mrinal and Singhal was used for data collection. This inventory consist 200 items. It measures five dimensions of defence mechanism-Turning against self (TAS), Turning against objective (TAO), Principalization (PRN), Reversal (REV) and Projection (PRO), for high school students. T-test was used for data analysis. The results revealed that Private high school students and government high school students show difference in five dimensions of defence mechanism.

Keywords

Defence Mechanism, Private and Government High School Students.

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P. Mohana ¹, K. Nagamani ¹, S. Muthusamy ², P. M. Velmurugan ³

Affiliations
1 Centre for Remote Sensing, Sathyabama Institute of Science and Technology, Chennai - 600119, Tamil Nadu, IN
2 V. O. Chidambaram College, Tuticorin - 628008, Tamil Nadu, IN
3 Centre for Earth and Atmospheric Sciences, Sathyabama Institute of Science and Technology, Chennai - 600119, Tamil Nadu, IN

Abstract

Objective: To assess the landuse and landcover along with rainfall, to monitor the changes in waste and degraded lands, and to assess the water quality parameters mainly on TDS and Chloride and its impact in environ and to take the necessary action. Methods/Statistical Analysis: Land use/Land cover map, geology, geomorphology, drainage and waste lands maps were prepared using IRS P6 satellite Imagery. Rainfall details of 30 years were collected in the meteorological department and water quality samples were collected in control wells for pre monsoon and post monsoon season and using interpolation technique and overlay analysis, assessed the water quality and landcover changes. Findings: Using this analysis, the study clearly indicates that wasteland extent is increasing year by year due to the various water quality and rainfall changes. Micro level planning of water source and quality will increase the good environment. And identified the favorable sited for augment ground and surface waters bodies. Applications/Improvements: Suggestion to convert the wasteland into productive lands and sustainable developmental activity like construction of check dams, rehabilitation of tanks & canals, rainwater harvesting structures, and waste water recycling.

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