Owing to very rapid growth in electronics and technology, it has become very essential to maintain power quality at the consumer end. Since power quality has vast no of assets, mainly important and frequently occurring disturbances are considered in this paper. Power quality is mainly defined by disturbances associated with voltage. However, the voltage disturbances can be classified based on t...

This paper deals with power-quality (PQ) event detection, classification and characterization using higher-order sliding cumulants to examine the signals. Their maxima and minima are the main features, and the classification strategy is based in competitive layers. Concretely, we concentrate on the task of differentiating two types of transients (short duration and long duration). By measuring ...

BACKGROUND Paraquat (PQ) is a non-selective herbicide that generates reactive oxygen species in vivo. We hypothesized that acute kidney injury (AKI) in patients with acute PQ poisoning would provide a model for the clinical features of ROS-induced AKI. METHODS From January 2007 to December 2007, 278 patients with acute PQ intoxication were included in the study. AKI was defined based on the R...

PQ and F5 are two typical steganography methods of JPEG images and have been used widely. To compare the robustness of the above two algorithms, to withstand steganalytic attack a classification algorithm based on sensitive features is presented. SVM is used as a classifier using sensitive features extracted from two domains DCT and DWT. A comparison between the two types of features is also sh...

This paper presents an elementary proof of the HannenhalliPevzner theorem on the reversal distance of two signed permutations. It uses a single PQ-tree to encode the various features of a permutation. The parameters called hurdles and fortress are replaced by a single one, whose value is computed by a simple and efficient algorithm.

In this work, Self Organizing Map (SOM) is used in order to classify the types of defections in electrical systems, known as Power Quality (PQ) events. The features for classifications are extracted from real time voltage waveform within a sliding time window and a signature vector is formed. The signature vector consists of different types of features such as local wavelet transform extrema at...

The renewable energy resources rule the world of power generation. Now-a-days wind farms are encouraged for up gradation of energy production, as the wind power is dirt free, readily available renewable alternative. The integration of wind farms with power grid leads to Power Quality (PQ) issues such as voltage sag, swell, flicker, harmonics etc. Most of the industrial and commercial loads are ...

Let p and q be two distinct prime ideals of Fq[T ]. We use the Eisenstein ideal of the Hecke algebra of the Drinfeld modular curveX0(pq) to compare the rational torsion subgroup of the Jacobian J0(pq) with its subgroup generated by the cuspidal divisors, and to produce explicit examples of Jacquet-Langlands isogenies. Our results are stronger than what is currently known about the analogues of ...

Paraquat is a commonly used herbicide in many countries which can lead to systematic poisoning on exposure, In this study, paraquat (PQ)-induced changes in the expression of Cyclooxygenase-2 (COX-2) along with biochemical and histopathological changes in the lungs, liver and kidneys were studied. Twenty four male Wistar rats (180-200 g) were exposed either against saline as control group or var...

As the complexity increases in modern power systems, quality (PQ) analysis considering interharmonics has become a challenging and important task. This article proposes novel decomposition estimation method for instantaneous PQ indices (PQIs) monitoring single- three-phase systems with transient disturbances. To separate interharmonic components, set of new scaling filter wavelet narrow transit...