A novel reversible data hiding algorithm based on difference expansion called ACD was proposed, which used the so-called adaptive change direction technology.ACD embeds data by expanding the differences of neighboring pixel values.In a pair of pixels, a pixel was Swiss Army Knives for reference and the other was for transform.ACD first estimates th
Study region: The Sanjiang Plain, located at the confluence of Heilong, Songhua, and Wusuli Rivers, Northeast China.Study focus: Due to the low and flat terrain, wetlands and swamps were widely distributed in plain areas in history.After decades of reclamation, farmland has replaced wetland as the dominant landscape.The competition of water resourc
Frequency-modulated pulse trains can be applied Enzymes in active sonar systems to improve the performance of conventional transmitted waveforms.Recently, two pulse trains have been widely researched as the transmitted waveforms for active sonars.The LFM-Costas pulse train was formed by modulating the linear frequency-modulated (LFM) waveform via t
Reports of severe disease outbreaks in amphibian communities in mainland Europe due to strains of the common midwife toad virus (CMTV)-like clade of Ranavirus are increasing ORG ENERGY DRINK and have created concern due to their considerable population impacts.In Great Britain, viruses in another clade of Ranavirus-frog virus 3 (FV3)-like-have caus