Abstract. A series of papers have treated the frequency analysis problem by studying the zeros of orthogonal polynomials on the unit circle with respect to measures determined by observations of the signal. In the recent paper [3], a different approach was used, where properties of Szegő quadrature formulas associated with the zeros of paraorthogonal polynomials with respect to the same measure...

Customer churn is the term which indicates the customer who is in the stage to leave the company. Particularly it is happening recurrently in the telecommunication industry and the telecom industries are also in a position to retain their customer to avoid the revenue loss. Prediction of such behaviour is very vital for the present market and competition and Data mining is the one of the effect...

s from my papers Nils E Eriksson, Halmstad, Sweden 1972-1979 (Eriksson, Formgren et al. 1972; Eriksson 1973; Ahlstedt, Belin et al. 1975; Eriksson, Lindgren et al. 1975; Eriksson, Lindgren et al. 1975; Formgren and Eriksson 1975; Borulf, Eriksson et al. 1976; Eriksson 1976; Eriksson, Ahlstedt et al. 1976; Ahlstedt and Eriksson 1977; Eriksson 1977; Eriksson 1977; Eriksson 1977; Eriksson and Ahls...

Recently, some papers in the literature have shown that, from a bimetric theory of gravity, it is possible to produce massive gravitational waves which generate a longitudinal component in a particular polarization of the wave. After a review of previous works, in this paper the longitudinal response function of interferometers for this particular polarization of the wave is computed in two dif...

Dragan Mašulović Abstract. One can turn the set of retractions of a lattice 〈L,≤〉 into a poset Rf (L) by letting f ≤ g iff f(x) ≤ g(x) for all x ∈ L. In 1982 H. Crapo raised the following two problems: (1) Is it true that Rf (L) is a lattice for any lattice L? (2) Is it true that Rf (L) is a complete lattice if L is a complete lattice? In 1990 and 1991 B. Li published two papers dealing with th...

A new procedure is proposed for estimating the effective population size, given that information is available on changes in frequencies of the alleles at one or more independently segregating loci and the population is observed at two or more separate times. Approximate expressions are obtained for the variances of the new statistic, as well as others, also based on allele frequency changes, th...

In this paper we address the theoretical debate about the representation and processing of derived words, presenting the results of a lexical decision task experiment aiming to investigate the visual recognition of Italian prefixed and suffixed words and nonwords. The study was specifically designed to test hypotheses stemming from the manipulation of two linguistic factors: (1) linearity (i.e....

This paper presents a new centralized adaptive method under frequency load shedding. Sometimes, after initial frequency drop following severe disturbances, although the system frequency returns to its permissible value, however, the system might become unstable due to voltage problems. In this regard, the paper proposes a new centralized adaptive load shedding method to enhance the voltage stab...

this paper presents a modified 32-bit rom-based direct digital frequency synthesizer (ddfs). maximum output frequency of the ddfs is limited by the structure of the accumulator used in the ddfs architecture. the hierarchical pipeline accumulator (hpa) presented in this paper has less propagation delay time rather than the conventional structures. therefore, it results in both higher maximum ope...

most geologic changes have a seismic response but sometimes this is expressed only in certain spectral ranges hidden within the broadband data. spectral decomposition is one of the methods which can be utilized to help interpreting such cases. there are several time-frequency methods including: short-time fourier transform (stft), continuous wavelet transform (cwt), wigner-ville distribution (w...