This paper highlights the differences between traditional wavelet and multiwavelet bases with equal approximation order. Because multiwavelet bases normally lack important properties that traditional wavelet bases (of equal approximation order) possess, the associated discrete multiwavelet transform is less useful for signal processing unless it is preceded by a preprocessing step (prefiltering...

This paper presents an alternative power conversion topology that can buck or boost the input voltage/current with linear and non-linear load depending upon duty ratio and modulation index in a single stage conversion with the help of Impedance source passive Network (L and C), which is usually known as Z-Source. The buck and boost capabilities of inverters are operated in the shoot through sta...

Formant estimation becomes complicated in the presence of correlated background noise such as car and train noise as the spectrum of noise from revolving mechanical sources have their own spectral peaks that affect the number and positions of the observed peaks in noisy speech spectrum. This paper investigates the modeling and estimation of spectral parameters at formants of noisy speech in the...

This paper is concerned with the design of distributed fusion filter for networked systems with unknown measurement interferences and packet dropouts. A Bernoulli distributed random variable is used to depict the phenomenon of packet dropouts. Without any prior information about the interference, a recursive Kalman-type state filter independent of the unknown interferences is designed for each ...

We present the results of a continuing survey to detect Lyα emitting galaxies at redshifts z ∼ 9 : the ZEN (“z equals nine”) survey. We have obtained deep VLT/ISAAC observations in the narrow J–band filter NB119 directed towards three massive lensing clusters: Abell clusters 1689, 1835, and 114. The foreground clusters provide a magnified view of the distant universe and permit a sensitive test...

We present new results of a deep optical imaging survey using a narrowband filter (NB921) centered at λ = 9196 Å together with B, V , R, i, and z broadband filters in the sky area of the Subaru Deep Field which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Lyα emitter candidates at z ≈ 6.5 – 6.6 among ∼ 180 strong NB921-excess (...

The present study was aimed to examine the phytochemical constituents present in Andrographis paniculata (Burm.f.) Wall. ex Nees. The preliminary phytochemical constituents were qualitatively analyzed using the method described by Brindha et al. For GC-MS analysis, 10 g powdered sample is extracted with 30 mL ethanol overnight and filtered in ashless filter paper with sodium sulphate (2 g) and ...

Sharp wave ripples (high frequency events which occur in the CA1 hippocampal region of the brain) are detected using algorithms which automatically threshold the data at certain voltage values. Typically, detection algorithms use the same threshold throughout the entire voltage trace. The problem with this method is that the amplitude distribution of the noise is not constant in time; algorithm...

Received Nov 13, 2012 Revised Accepted In this paper, we have proposed a framework to count the moving person in the video automatically in a very dense crowd situation. Median filter is used to segment the foreground from the background and blob analysis is done to count the people in the current frame. Optimization of different parameters is done by using genetic algorithm. This framework is ...

The application of subband coding techniques for images has recently received considerable attention [l]-[4]. Vetterli [l] has extended the idea of quadrature mirror filtering [5] for the two-dimensional case: The usefulness of such techniques has been well demonstrated in recent contributions by Woods and O’Neil PI. The purpose of this correspondence is to introduce certain methods whereby two...