Disclosed are pyrimidine derivatives of formulawherein R0, R1, R3 to R9, and Z have a signification as indicated in claim 1, which have interesting pharmaceutical properties. The lamp includes a drive for supplying a varying signal in response to receiving first and second control signals. The method can include determining a schedule tuning parameter for the set of at least one job, the schedule tuning parameter based on the workload-time parameter. Based on the signal received from the access point, the network communicates with information providers connected to the network and provides data to the mobile unit through the access point corresponding to the location of the mobile unit.