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This paper presents a preliminary study on the effect of dispersive ground parameters on surges transferred from medium-voltage to low-voltage distribution lines located in rural areas. In this study, a direct lightning strike is assumed at different points of a distribution line terminated at a 10 kVA 7.967 kV/240–120 V single-phase transformer with center-tapped secondary. The distribution line...
Facultative vertically transmitted bacterial symbionts often manipulate its host’s reproductive biology and thus facilitate their persistence. Wolbachia is one such symbiont where frequency-dependent reproductive benefits are opposed by frequency-independent fitness costs leading to bistable dynamics. Introduction of carriers does not assure invasion unless the initial frequency is above a threshold...
Protein structure prediction (PSP) is a well-known problem in bioinformatics. Identifying protein native conformations makes it possible to predict its function within the organism. Knowing this also helps the development of new drugs and the comprehension of some biological mechanisms. During years some techniques have been developed for this purpose but, due to their high cost, it is necessary to...
Disturbances to power distribution lines are mainly caused by lightning. Due to the random nature of lightning, the estimation of overhead distribution lines lightning performance is obtained by statistical methods. This paper investigates the influence of the return stroke velocity and the statistical method used to estimate the indirect lightning flashover rates of overhead distribution lines.
The estimation of overhead distribution lines lightning performance is very important for insulation design. Due to the random nature of lightning, different aspects of the phenomenon, such as the discharge points of incidence and the statistical distribution of the current intensity, are modeled in performance evaluation studies. This paper presents a comparative study of different models proposed...
The paper describes a novel approach to the microarray image simulation in order to provide researchers with a tool for testing and evaluating the performance of analysis software. Characteristics of a given microarray experiment are captured from public databases. Extracted data are then used for generating a synthetic microarray image and the corresponding ground truth data (i.e. the gene expression...
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