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1 Nov 12, 2017
EFFICIENT AND COMPATIBLE VLSI ARCHITECTURE OF PARALLEL MULTIPLIER AND ACCUMULATOR

In the developing demand of todays life there is a requirements for high speed operations of digital signal processing and other similar applications. This need high speed low power, less delay and compact accurate circuits. Multiplication and addition are the major required operations for digital signal processing. This need is fulfilled by using new architectures for modified booth algorithm ,carry save adder and Wallace tree. Modified booth algorithm increases the speed by reducing the number of partial products and carry save adder performs the sum of partial products which further reduces the delay and power. New architectures are designed, simulated and synthesized using XILINX ISE.Delay and power analysis are shown in the result....

Authors: PratibhadeviTapashetti, Praveenkumar.

2 Nov 12, 2017
TEMPORAL COASTAL CHANGES ALONG RAMESWARAM COAST, TAMIL NADU

The coastal ecosystems are under pressure on account of increased anthropogenic activity on the coast, as a result of globalization. It is necessary to protect these coastal ecosystems to ensure sustainable development. This requires information on habitats, coastal processes and natural hazards on a repetitive basis. The modern scientific tools of remote sensing, GIS and GPS are extremely valuable in coastal environmental studies. Multi-date satellite data, Survey of India Topographic map, Naval Hydrographic Chart and convectional bathymetry survey have been used to generate the coastal ecosystem, coastal land use and land cover, shoreline and bathymetry maps. The analysis of multi-date coral reef maps showed that 5.256km² of reef area and 7.951km² reef vegetation in Rameswaram coast have been lost over a period of ten years (1988-1998). The changes in coastal land use/land cover indicate that the major changes occurred in mangrove, crop land, fallow land, agriculture plantation, forest plantation, scrub land, sandy area and tanks. The analysis of multi-date shoreline maps (1969-1998) showed that 2.065km² and 1.436 km² of the mainland coast and 0.545km² and 0.887km² areas of island coast have been eroded and accreted in Rameswaram coast. The analysis of multi-date bathymetry data (1975-1999) indicates that, the depth of seafloor have decreased along the coast and around the islands. The coastal ecosystem particularly coral reef ecosystem is very severely affected by anthropogenic and natural factors. The validation by ground truth has also confirmed these results....

Authors: M. Thanikachalam, S. K. Nimalan.

3 Nov 12, 2017
GEOSPATIAL TECHNOLOGIES FOR IDENTIFICATION OF POTENTIAL AQUACULTURE AREAS IN ANDHRA PRADESH, A CASE STUDY OF KRISHNA DISTRICT

Aquaculture is a highly profitable venture in India also it has increased the availability of nutritive food for the growing population, the government of Andhra Pradesh has identified the fisheries sector as a Growth Engine for Socio Economic Development of the new state of Andhra Pradesh. At the same time A.P Government accords top priority to enhance the fish production to 42 lakh tones in the next five years from the present level of 19.64 lakh tones and to double the exports value from the present level of Rs.16000 crores. Remote Sensing and Geospatial Information System can be effectively used for identification of existing aquaculture and map the Potential aquaculture area. The study was conducted in coastal district of Krishna in Andhra Pradesh for identification of aquaculture potential areas and existing/dry/abandon aquaculture ponds using high resolution IRS LISS-IV satellite data (March-April 2014-15). The aqua pond farmer and management details where collected through enumeration in the field. Study was carried out Mandal/Village/Creek/Cluster/FPO (Farmer Producer Organization) wise for identification of potential aquaculture areas in Krishna district, using visual Interpretation approach. In Krishna district, 60,171 ha were existing as aquaculture ponds and another 23,088 ha was found to be Potential aquaculture areas. The parcel boundaries (Cadastral layer) were superimposed on the Aqua Ponds. The area in Krishna district equals to 37 percent of the total aquaculture in Andhra Pradesh, and Machilipatnam mandal 6,049.ha highest aqua potential area was found....

Authors: Raghuveer Naidu K, V.V.R.M.Narayana Rao,K.V.Ramana.

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