The power quality (PQ) meters are usually designed to provide information relevant to the particular type of the disturbance. This is quite adequate if the disturbances that are being monitored are of a given type that matches the performance characteristics and design features embedded in the instrument. However, if there is a need to detect a variety of disturbances and classify their types, ...

paraquat (pq) is a widely used herbicide. however, a large number of cases of accidental or suicidal poisoning from pq has been reported. membrane damage induced by lipid peroxidation, inactivation of protein or damage to dna by radical formation have been suggested as toxicity mechanisms of pq. in the present work, the effects of atropine, propranolol, procainamide and dipyridamole on pq-induc...

Let E pq be the vertical homology Hg(E 0 p∗) of this complex. In other words, if Z pq = ker(d v pq), B pq = im(d v p,q+1), then E pq = Z 1 pq/B 1 pq. We note that d h induces maps E pq → E p−1,q as follows. The condition dd = −dd shows that d(Z pq) ⊆ Z p−1,q and d(B pq) ⊆ B p−1,q; therefore, there is a homomorphism d̃pq : E 1 pq → E p−1,q. Let E pq be the horizontal homology Hp(E ∗q) of this com...

Perturbed Quantization (PQ) steganography scheme is almost undetectable with the current steganalysis methods. We present a new steganalysis method for detection of this data hiding algorithm. We show that the PQ method distorts the dependencies of DCT coefficient values; especially changes much lower than significant bit planes. For steganalysis of PQ, we propose features extraction from the e...

This paper presents a new framework based on modified EMD method for detection of single and multiple PQ issues. In modified EMD, DWT precedes traditional EMD process. This scheme makes EMD better by eliminating the mode mixing problem. This is a two step algorithm; in the first step, input PQ signal is decomposed in low and high frequency components using DWT. In the second stage, the low freq...

A family of quaternary sequences over Z4 is defined based on the DingHelleseth generalized cyclotomic classes modulo pq for two distinct odd primes p and q. The linear complexity is determined by computing the defining polynomial of the sequences, which is in fact connected with the discrete Fourier transform of the sequences. The results show that the sequences possess large linear complexity ...

The evenness and the values modulo 4 of lengths periods continued fraction expansions p 2p for p≡3(mod4) a prime are known. Here we prove similar results expansion pq, where p,q≡3(mod4) distinct primes.

In Shih & Hsu [9] a simpler planarity test was introduced utilizing a data structure called PC-trees (generalized from PQ-trees). In this paper we give an efficient implementation of that linear time algorithm and illustrate in detail how to obtain a Kuratowski’s subgraph when the given graph is not planar and how to obtain the embedding alongside the testing algorithm. The main part of the imp...

Here we will follow some of the presentation from Werner, Manby, and Knowles. 1 Density fitting is a way to approximate the usual two-electron integrals, (pq|rs) = dr 1 dr 2 φ p (r 1)φ q (r 1) 1 r 12 φ r (r 2)φ s (r 2), (1) where we have assumed real orbitals. We may also consider this electron repulsion integral as the repulsion between two generalized electron densities,

The results of J. Širáň and the first author (Australasian J. Combin. 10 (1994)) are generalized, and new formulas for the number of closed walks of length p or pq, where p and q are primes, valid for all vertex-transitive graphs are found. Based on these formulas, several simple tests for vertex-transitivity are presented, as well as lower bounds on the orders of the smallest vertexand arc-tra...