The science of hiding information behind other cover media file is known steganography.Audio steganography means that a secret message is hidden by embedding it in an audio file.This paper presents a new audio steganography approach that is used the contourlet transform to hide a speech and image Adrenal Support in an audio signal.The cover audio s
Se presenta una aproximación a la revisión de literatura referente a los efectos económicos y de comercio de la covid-19, analizados desde la perspectiva de la economía internacional.Para ello se realizó una búsqueda sistemática de documentos arbitrados por pares, tomando como fuente principal la base de datos Scopus (Elsevier), complementad
We investigate how leaving the parental home differs between three countries with different Cocktail Mixer welfare-state and housing systems: the USA, the Netherlands and West Germany.Using longitudinal survey data, we examine the transitions of leaving home to live with and without a partner.We find that, much more than in the European countries,
This paper investigates the nucleate boiling process of dimethyl ether and selected hydrocarbons.The main goal of this study is to measure the heat transfer coefficients of RE170, R600a, and R601, and to compare them with R134a.The experiments were carried out for heat fluxes up to 70 kW/m2.Experimental results have shown a typical trend that the h