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The effect of ultrasonic pre-treatment on osmotic drying of ash gourd and its associated micro structural changes has been presented here. The ash gourd cubes of dimensions 15 mm X 15 mm X 15 mm were subjected to ultrasonic (US) waves at a frequency of 30 ± 1 kHz for 0, 10, 20 and 30 min. Then osmotic drying was carried out by immersing the samples in 50, 60 and 70° Brix sugar solution at various...
Efficiency of any surveillance system depends on the efficacy of moving object detection. Background subtraction, temporal differencing and optical flow techniques are mostly used in the moving object detection techniques. In this paper a hybrid technique is proposed based on background subtraction and temporal differencing techniques to detect the moving objects in outdoor and indoor scenes. The...
In Wireless Sensor Networks (WSN), sensors form the network dynamically without help of any infrastructure. The accidental death of the nodes due to technical failures or death due to power exhaustion may disturb the existing coverage and connectivity of the network. In this paper, distributed coverage hole recovery algorithms for the wireless sensor networks are designed that use the vector methods...
Bluetooth is a most promising technology designed for the wireless personal area networks for the cable replacement. In this paper, a location aware mobility based routing scheme for the Bluetooth scatternet is proposed that constructs the links dynamically. Our proposed routing protocol requires location information of the nodes and constructs the route between any source and destination and reduces...
Bluetooth is a low-cost, low-power and short range communication technology, which operates in 2.4 GHz ISM band. The important research issues in Bluetooth are scatternet formation and routing, since nodes can arrive and depart at arbitrary time. In this paper, novel route maintenance algorithms are proposed for the Bluetooth scatternet that supports mobility of the nodes. Our protocols guarantee...
Recording information of the entry and exit of a target through the boundary of the deployed region is highly essential in wireless sensor network. In this paper, sequential boundary node selection (SBNS) and distributed boundary node selection (DBNS) algorithms are proposed to find out the boundary nodes of the wireless sensor network with or without presence of obstacles over the deployed region...
In wireless sensor network, accidental death of nodes in predictable or unpredictable way may cause coverage and connectivity problems of the original network. In this paper, potential approaches to maintain the network in the post deployment scenario is proposed that lets the sensors work alternatively by identifying the redundant sensing regions in the dense networks under the assumption that the...
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