A quantitative evaluation of the musical timbre and its variations is important for the analysis of audio recordings and computer-aided music composition.Using the FFT acoustic descriptors Inkjet Original Inks and their representation in an abstract timbral space, variations in a sample of monophonic sounds of chordophones (violin, cello) and aerop
To address the increasing interest towards more environmentally friendly naval transportation and the introduction of IMO2020 restrictions on pollutant emissions onboard ships, the present work details the preliminary design of a mini gas turbine engine, i.e., a gas turbine engine with an output power up to 5 MW, for onboard energy generation.In co
Alarm Clock In this paper, a patch antenna is proposed with reconfigurable patterns in the azimuth plane.The basic structure of the antenna is a circular patch upon which a vertical slot is etched.In addition, a row of shorting posts along the horizontal direction is placed underneath the patch.With the aid of characteristic mode analysis (CMA), re
The objective of the study was to compare the performance of exotic (Eucalyptus grandis and Acacia saligna) and indigenous (Acacia polyacantha and Bauhinia thonningii) tree species in rehabilitating active gold mine tailings dump.The seedlings were produced in a nursery and transplanted onto the tailings dumps during the rainy season in the years 2