An oxygen scavenging polyolefin composition and methods of making thereof are described herein. At least one set of USB sockets and at least one set of PSTN jacks are externally provided on the housing or the base at predetermined positions; and an automatic switch circuit and a microprocessor with a memory are internally provided in the housing. The approach relies on an algorithmic decomposition of the data mining kernel on the data and compute grids, which provides a simple way to exploit the parallelism on the respective grids, while minimizing the data transfer between them. Currently the speaker unit is widely used in the industry today in home and audio devices to produce sound generated my electromagnetic pulses entering its coils and magnets. The method includes preparing an electrode plate, cutting the electrode plate to conform to the width of the electrode, thus providing a unit electrode plate, and removing at least one of the corner regions of the unit electrode plate. The input signal is applied to a state feedback controller, preferably including a Kalman filter, to generate a control signal with reduced noise.