Communication operation is performed with enhanced transmission efficiency by obtaining enhanced communication capacity through optimal allocation of transmission powers to individual MIMO channels obtainable by spatial multiplexing. In this method and system, a shop floor information collector 108 and a working machine 107 are provided to each production line for collecting real time information, such as real time output 2022, defective product category and quantity 2024, working status 2028, and the like. 5 kgm2 and a specific energy absorption of at least 300 J\xb7m2kg as measured against a 9*19 mm FMJ Parabellum bullet according to a test procedure based on Stanag 2920. The illumination assembly can also be provided with a single illuminating device for providing one illumination output for illuminating substantially the entire field of view. 5 to 15% of units of methacryloylated \u03b1-amino acids, \u03b5-amino acids, aromatic amino acids or oligopeptides or their sodium salts. In the regions of the mouth, the throat and the airways they produce a refreshing and clearing feeling.