In the present work, we present a new formulation for the estimation of the soil moisture in the root zone based on the measured value of soil moisture at the surface. The method sheds lights on the relationship between surface and root zone soil moisture. It derives from a simplified form of the soil water balance equation and provides a closed form of the relationship between the root zone an...

A 2D biomechanical model of the tongue is used to simulate movement sequences and speech signals in Vowel-to-Vowel transitions. The analysis is focused on how central commands and biomechanics can interact and influence the physical speech signals. In particular, it is shown how complex velocity profiles can be explained by the biomechanics, and how the low-pass filtering effect of the biomecha...

In the paper we present an improved version of multistage hashing based algorithm, used to find frequent items in a stream. Our algorithm uses low-pass filters instead of simple counters, so it concentrates more on recent items and ignores the old ones. Such behaviour is similar to sliding window based algorithms, but requires less memory and is suitable for real-time applications. The algorith...

This study compares learning from designing instruction in the context of simulation-based inquiry learning with learning from expository teaching. The domain of instruction was the electricity domain of high-pass and low-pass filters. Participants were students from a technical vocational school. In the experimental condition (N = 21) students created assignments for an imaginary student to he...

In this paper we present the tau-cell, a building block based on a log-domain low-pass filter, which allows the creation of arbitrary differential equations using a cascade of these cells in a manner similar to the state variable methods of filter realization. In the tau-cell implementation, however, all feedback is local, i.e., each first-order section only feeds back to the previous firstorde...

Noise analysis of higher-order translinear filters cannot be established through straight-forward extension of analysis techniques for first-order TL filters, due to the presence noise sources that interact with multiple filter states simultaneously, in a nonlinear and non-stationary way. Such noise sources, that are not encountered in in first-order TL filters, require a new analysis technique...

Two algorithms for constructing a class of compactly supported complex tight wavelet frames with conjugate symmetry are provided. Firstly, based on a given complex refinable function φ, an explicit formula for constructing complex tight wavelet frames is presented. If the given complex refinable function φ is compactly supported conjugate symmetric, then we prove that there exists a compactly s...

| This paper examines the potential uses of interband leakage in image coders based on subband decomposition. The approach taken is to use the lowpass subband to predict the signal behavior in the other bands. This information is then used to both inform the coder/decoder as to likely locations for signi cant energy in the highpass bands, and to form a di erence signal that can be coded at a lo...

Introduction During the first year, infants are highly attuned to suprasegmental aspects of speech. This sensitivity may be exploited in the infant’s segmentation of the speech stream into clausal units. Hirsh-Pasek, Kemler Nelson, Jusczyk, Wright Cassidy, Druss and Kennedy (1987) examined young infants’ sensitivity to the pauses and other suprasegmental cues that coincided with clausal boundar...