In [J. Algeb. Combin. 19(2004), 123–141], Du et al. classified the orientable regular embeddings of connected simple graphs of order pq for any two primes p and q. In this paper, we shall classify the nonorientable regular embeddings of these graphs, where p 6= q. Our classification depends on the classification of primitive permutation groups of degree p and degree pq but is independent of the...

In this paper, comparative study between wavelet transform (WT) and -transform (ST) based on extracted features for detection of islanding and power quality (PQ) disturbances in hybrid distributed generation (DG) system is presented. The hybrid system consists of DG resources like photovoltaic, fuel cell, and wind energy systems connected to grid. The negative sequence component of the voltage ...

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, ...

ABSTRACT: The paper presents a novel method for the assessment of the power quality disturbances in the distribution system using the Kalman filter and fuzzy expert system. In this method the various classes of disturbance signals are developed through the Matlab Simulink on the test system model. The characteristic features of the disturbance signals are extracted based on the Kalman filter te...

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...

Computer vision researchers have developed various learning methods based on the bag of words model for image related tasks, including image categorization, image retrieval and texture classification. In this model, images are represented as histograms of visual words (or textons) from a vocabulary that is obtained by clustering local image descriptors. Next, a classifier is trained on the data...

In this paper, we classify the regular embeddings of arc-transitive simple graphs of order pq for any two primes p and q (not necessarily distinct) into orientable surfaces. Our classification is obtained by direct analysis of the structure of arc-regular subgroups (with cyclic vertex-stabilizers) of the automorphism groups of such graphs. This work is independent of the classification of primi...

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...

• A deep learning framework for intelligent classification of PQD signals is proposed. The improved Bagging algorithm has better accuracy and generalization performance. active strategy selects the most representative samples from a dataset. uses less labeled data thus saving manual labeling cost. automatic power quality disturbances (PQD) great significance solving problems. In this study, we ...

The increasing trends toward the accurate identification of power quality disturbances (PQD) via (PQ) monitoring require an appropriate digital signal processing (DSP) technique and a robust classifier. To this end, Stockwell transform (ST), one most efficient feature extraction DSP tools, its several variants play utmost role in PQ assessment framework. Its time-varying spectral characteristic...