Methods and systems are provided for simulating chemical and biological processes in a distributed technical computing environment. At least one lateral wall portion and the bottom wall portion are formed from a sponge material. A proportion of a particulate metal oxide selected from the group consisting of silicon dioxide, aluminium oxide, titanium oxide and zinc oxide is added to the binder. A ground wire is connected to the conductive panel and the vehicle so as to establish a ground connection for the electromagnetic wave. The ground plate has a supplementary ground contact which faces a set of the adjacent two of the signal contacts in the first direction and is adapted for contacting with the second surface of the connection object.