Taenia solium Cysticercosis, Irian Jaya, Indonesia

Centers for Disease Control and Prevention, Toni, Wandra ; Akira, Ito ; Hiroshi, Yamasaki ; Thomas, Suroso ; Sri S. Margono, Emerging Infectious Diseases, 9(7), 2003, 884-885. publishe

Practical implementation issues and future directions for active noise control

The basic physical principles underlying active noise control are discussed from a physical viewpoint with a view to understanding the issues which must be addressed in a practical implementation of the technology. Applications which should be feasible are identified and applications which are impractical for physical acoustics reasons are also identified. Finally, current and future research directions are explored and their relevance to commercial application of the technology discussed. </jats:p

Calculation of vibratory power transmission for use in active vibration control

Typical active vibration isolation experiments use point measurements of acceleration or force at the junction between the vibratory source and the receiving structure. This does not necessarily lead to the minimization of the transmitted vibrational energy. A simple method is described to generate a signal which is proportional to the harmonic vibratory power transmission at the driving frequency, which is suitable for use as an error signal with an existing filtered-x feedforward active vibration controller