Informatics Publishing Limited

M. Kavitha Mayilvaganan , P. Mohana ¹, K. B. Naidu ²

Affiliations
1 Department of Mathematics, Sathyabama University, Chennai-119, IN
2 Centre for Remote sensing and Geo informatics, Sathyabama University, Chennai-119, IN

Abstract

The search for new groundwater resource is essential to sustained economic development in arid environment. The purpose of this study was to investigate new water sources using remote sensing and GIS methods. The thematic layers considered in this study are Lithology, Geomorphology, Drainage, Soil, Lineament, Land use and surface water body, which were prepared using the IRS-P6 LISS-III satellite imagery and conventional data. In addition, soil and drainage maps were digitized from published maps. The thematic layers were finally integrated using ArcGIS V 9.2 software to yield a groundwater potential zone map of the study area. Thus, three different groundwater potential zones were identified, namely 'good', 'moderate' and 'poor'. This GIS based output result was validated using water level depth data collected from Institute of Water studies, PWD. Finally, it is concluded that the RS and GIS techniques are very efficient and useful for the identification of groundwater potential zones.

Keywords

Groundwater, GIS, Remote Sensing, Thurinjapuram

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M. Lalli ¹, P. Mohana ¹, V. Balasubramanian ¹

Affiliations
1 Department of Computer Science, Bharathidasan University, Trichy-23, IN

Abstract

Security is the essential requirement in wireless ad-hoc networks to provide the protected communication between the nodes. The fact that the mobile ad-hoc networks are the lack of fixed infrastructure and use the wireless links for communications to make them very susceptible to an adversary‟s malicious attacks. Due to this feature of freedom and unconstrained mobility, it is prone to many security related problems. One of the problem in ad-hoc network is a black hole attack and it is easily employed by exploiting vulnerability of ad-hoc networks. In black hole attack, the attacker‟s node will always have the availability in replying to the route request and thus intercept the data packet and then retain it. In this paper, we address the problem of packet forwarding misbehavior and present a new technique HBR to detect and remove the black hole attack using NBT(Next Bounds Table), RQCT (Request connection table) and RSCT (Response connection table) Tables. This technique gives the better solution to improve the overall performance of the network and isolates the black hole attack from the network. And also it identifies the correct path to transmit the data packets safely.

Keywords

Ad-Hoc, Black Hole Attack, Routing Packets, Security.

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R. Vanitha , P. Mohana , T. Mohana Priyadharshini , N. Nanthitha Varshini , N. Sindhuja

Abstract

Secure communication is the one of the main issue we are facing in this modern technology. Fractional order chaotic system has implemented for secure communication, however switching fractional order chaotic system has been not implemented for image encryption yet. So in this project we implemented image encryption by using new fractional chaotic system. It consists of fractional order chen system and other two fractional chaotic system. So for secure communication image has been encrypted using exclusive or Xor algorithm in this project. Secret key will be generated in different manner for each encryption randomly. This encryption technique increase the randomness and improve the speed of encryption.

Keywords

Fractional Order Chaotic System, Image Encryption and Decryption, Chaos Matrix, Histogram Equalization, Xor Swapping Algorithm

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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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