Sound elements were studied for a six strings sape, traditional instrument. The frequency was evaluated using spectrum and time plane. PicoScope oscilloscopes Adobe Audition version 3 used to record the acoustic spectra. Fast Fourier Transform (FFT) analysis spectra (using PicoScope) (TFA) spectrograms Audition). identified partial frequencies up 10th overtone. sape have an pattern with constan...

It is known that, interference classification plays an important role in protecting the authorized communication system and avoiding its performance degradation hostile environment. In this paper, problem for frequency hopping discussed. Considering possibility of presence multiple interferences system, order to fully extract effective features from received signals, linear bilinear transform b...

The load frequency control system aims to regulate the in electric power at a normal value with predetermined tolerance limit. In practice, does not always operate optimally, therefore controller is needed be added system. designed variation of combination Proportional-Integral-Differential (PID) controllers standard model PIDTune method consisting proportional (P) controller, integral (PI) dif...

This study is an exploratory analysis of applying natural language processing techniques such as Term Frequency-Inverse Document Frequency and Sentiment Analysis on Twitter data. The uniqueness this work established by determining the overall sentiment a politician’s tweets based TF-IDF values terms used in their published tweets. By calculating value from corpus, displays correlation between s...

Graphene sheets are combined of Honeycombs lattice carbon-carbon bonds which have high natural frequencies, high strength, and high conductivity. Due to important applications of the graphene sheets particularly at higher frequencies, the study of their dynamic behavior is important in this frequency range. From Molecular Dynamics (MD) point of view as the dimensions of graphene sheet incline, ...