A method including exposing a substance to a first type of electromagnetic waves generated by a first device. For example, the network may include a first edge switch, a second edge switch, and an ATM core network coupled to the first and the second edge switches and configured to allow the second edge switch to communicate with the first edge switch. The dimensions of the vector space can be defined by sequences of symbols that make up the chemical identifier strings. Upon computer system failure, steps of identifying the type of failure and an analysis of its root cause are optionally performed. An arithmetic module calculates the distance of the functional surface from the profiled surface using the digital measured values to the two exploring coils and a digital reference value and the fixed distance. The compressor is connected via a line to a pressure accumulator for the supply of a compressed-air injection module and to a device for compressed-air preparation having an air dryer and a pressure regulator for supplying pressure circuits for compressed-air-actuated consumers.