This book highlights time reversal acoustics, techniques based on the symmetry properties of acoustic fields. It has the unique feature that the first eleven chapters of the book are on the indepth studies of the theories of time reversal acoustics. The remaining chapters are on the four major applications of time reversal acoustics, together with their experimental setups and case studies: un…
In an effort to improve pump performance, impeller modifications are made. One of the impeller modifications is the influence of the number of blades. The 6 blade impeller was recast by varying the number of blades: 4, 5, 7, 8 and tested with various speeds: 1050, 1200 and 1350 rpm. From the experimental results it is known that the 8 blade impeller has a higher head and hydraulic power compare…
This study aims to describe Indonesia’s interest in establishing cooperation with South Korea in the field of E-Government. South Korea is a country that plays an important role in terms of technology, especially in the field of E-government. South Korea is considered to have the best level of e-government in the world according to a UN survey. From this, Indonesia has an interest in cooperat…