Abstract: A method for producing, by means of a master mould, an optical registration carrier which is provided with at least one programme which comprises information stored in the form of variations in a physical parameter. A master mould is made by means of an encoder and a laser beam recorder, wherein the laser beam recorder is driven from the encoder for storing at least said programme on the master mould. Random verification positions are generated thereby, after which coordinates of the verification positions are encrypted into verification information. The verification information is stored in the programme and verification effects are stored at said verification positions.

Abstract: A range is disclosed of pyrimidine derivatives (I) which can act as inhibitors of cyclin dependent kinases (CDK's) and which thereby can provide useful therapeutic compounds for use in treatment of tumours or other cell proliferation disorders. The compounds of this invention bind to CDK molecules in a manner that appears to differ from that of known CDK inhibitors such as olomoucine and roscovitine.

Abstract: General Packet Radio Service is a new service designed for digital mobile systems. Because of bottlenecks, such as an air interface (Um), queues may be formed in routers. Long transmissions of data may slow the operation of interactive applications so that it is no longer sensible to use the applications. In the routers, separate queues are formed for each service, quality of service, connection, subscriber and/or application/application class. Quality of service can be indicated by providing each packet with an identity indicating the quality, or a change in the quality can be signalled as separate messages. The amount of data sent from a queue at one go may be controlled primarily based on quality of service of the subscriber. When packets are sent from a queue, it is monitored whether only a small number of packets remains in the queue, and if so, these packets are sent as well.