A system and method for ensuring large and frequent updates to a data warehouse. A transducer converts the signals received from the energy pulse to voltage or current output signals that are then amplified. Preferred methods for percussion delivery to the chest wallupper back or headneck of a patient are described for use in treatment of heart attack or acute ischemic stroke respectively. broadside coupled structures in an inhomogeneous substrate structure such as for example microstrips in a multilayer LTCC. The method for coding of a significant map includes carrying out a scan of at least a portion of a block of transform coefficients; calculating runs of zeros of the scanned data; and coding runs of zeros with variable length coding.