A circuit arrangement configured to drive a load is disclosed herein. The method and apparatus of the invention involves placing an electrically conductive shield around the receiver. Data can initially be block encoded for error correction and detection. The plurality of second semiconductor regions each includes an outer portion with a high impurity concentration formed against an inner wall of the trench, and an inner portion with a low impurity concentration formed inner than the outer portion. Also provided herein are vectors and host cells comprising those nucleic acid sequences, chimeric polypeptide molecules comprising the polypeptides of the present invention fused to heterologous polypeptide sequences, antibodies which bind to the polypeptides of the present invention and to methods for producing the polypeptides of the present invention. For each supplier represented in the supplier database, a record is stored in the supplier database, which includes information representing the capabilities of the supplier to deliver at least one good or service.