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Calcium phosphate based glasses with different concentrations of TiO 2 (0 to 2.5 mol%) were prepared and their corresponding glass-ceramics were obtained by controlled heat treatments. The amorphous nature of glasses and the presence of crystalline phases in glass-ceramics were studied through XRD studies. Density, molar volume, ultrasonic velocities,(More)
—A wireless sensor network (WSN) consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, pressure etc. and to cooperatively pass their data through the network to a main location. Transmission of large sized images can be a bottleneck for a Wireless Multimedia Sensor Nodes due to its(More)
The security susceptibilities of the three well acknowledged topology maintenance protocols PEAS, ASCENT, and CCP (TMPs) are analyzed for sensor networks. By sustaining the Subset of nodes in a dynamic or awake state, these three protocols upturn the lifespan of the sensor network. The strategy of these protocols instigates that the sensor nodes will be(More)
Speech enhancement is required to enhance the quality of speech corrupted by the background noise and can be used in many applications such as hearing aids, mobile communication etc. In this paper a speech enhancement method is presented in which first Autoregressive (AR) model is applied for the noisy speech signal to find the speech parameters and then(More)
The adaptive filter algorithms can be used to find out the filter bank coefficients of standard wavelets. Here the algorithms like LMS, NLMS and RLS are used to find out the coefficients of dB2, dB3 and Coiflet1 wavelets. The LMS and NLMS algorithms are modified to form VSSLMS, NVSSLMS and time varying NLMS algorithms and their performances are also(More)
The project is mainly developed for the industrial plants such as thermal plant, waste water treatment, refineries to get the necessary outcome the flow of liquids where regulated accordingly by the means of control valves in actuator. The flow of stream or liquid is controlled by motor operation like closing or opening the valve by the means of electrical(More)
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