A modified autocorrelation method of linear prediction is proposed for pitch-synchronous analysis of voiced speech. The method needs one full period of speech data for analysis and assumes periodic extension of the data. This method guarantees the stability of the estimated all-pole filter and is shown to perform better than the covariance and autocorrelation methods of linear prediction. R6sum...

In this study, parallel connection of synchronous generators has been achieved automatically by the monitoring parallel connection conditions with the microcontroller. For this reason, two synchronous generators which are rotated with direct current motors have been connected in parallel. Firstly, the conditions required for parallel connection has been observed with measuring tools. Then, a mi...

This paper presents the study of a new application of non linear techniques for energy harvesting. The Synchronous Electric Charge Extraction (SECE) harvesting technique for piezoelectric generators is extended and adapted to electromagnetic generators. Because of the magnetic flux/electrical charge duality, this new circuit is named SMFE for Synchronous Magnetic Flux Extraction. A global theor...

The installation of Distributed Generation (DG) can have a significant impact on distribution system voltage regulation. The effects vary according to the DG device: in particular, synchronous generators present voltage control systems which interfere with the voltage regulation of the distribution systems. The paper analyzes two voltage control schemes for synchronous generators connected to M...

In order to assess the immunopathological effects of aqueous Echinacea purpurea extract (EPE) on mice experimentally challenged with Pasteurella multocida serotype A, forty female BALB/c mice were randomly divided into four groups. The groups included a control group (received sterile distilled water 2 times/week for 2 weeks, intraperitoneally and then 100 μl sterile saline intranasally), a PMA...

Synchronization is essential for the proper functioning of power grids; we investigate the synchronous states and their stability for cyclic power grids. We calculate the number of stable equilibria and investigate both the linear and nonlinear stabilities of the synchronous state. The linear stability analysis shows that the stability of the state, determined by the smallest nonzero eigenvalue...