This article proposes a dynamic spiral scrambling algorithm, which is combined with the random pixel value filling operation, Deoxyribonucleic Acid (DNA) operation and used in 639 image encryption.The random pixel value filling operation is to generate some random values and fill them around the plain-image.These values can influence all the pixels
The relevance of the study is determined by the need to form a development strategy for the logistics centers of the Republic of Belarus based on the analysis of business processes and the impact of their effectiveness on the efficiency of the logistics centers as a whole.Currently, the problem associated with the formation of indicators for assess
Background: The forehead is a donor site for facial reconstruction but has no generous donor site for its coverage.All options of the reconstructive ladder can be used.A large rotation flap was used to Jumper reconstruct a big central forehead defect following failed previous repair in an elderly diabetic patient after a motor car accident.Case pre
The stream parameter was affected by the height of falling, water debit and head losses.The stream that had straight flow could be converted to vortex stream using shapping drain.The movement of the vortex stream could be converted to mechanical energy using vortex wheel.The aim of this study was to find out the effect of the height and angle in ex