Abstract: A method of estimating a number of agents needed in a queueing system where each active agent is available to work on several tasks in parallel, includes the steps of obtaining a representation of the queueing system comprising information on all possible states that the queueing system can be in and the intensity rates for the possible transitions between states calculating the resulting service level for the tentative number of active agents based on the state probability vector, which is based on the representation, a service rate values ?i,j and an arrival rate intensity value ? and comparing the resulting service level to the target service level.

Abstract: A vehicle seat mounting device includes a first component for attachment to a vehicle and a second component for attachment to a vehicle seat. The device further includes an arrangement for connecting the first and second components to each other such that the first component and the second component are adjustable relative to each other by pivoting the first component and the second component relative to each other around a substantially vertical geometrical pivot axis. At least one of the first and second components includes a first unit and a second unit which are displaceable relative to each other in a direction parallel to a substantially horizontal plane, and an arrangement for damping a relative displacement motion of the first and second units in the direction so as to reduce horizontal vibrations in the vehicle seat when the device is installed for use in the vehicle.

Abstract: The present invention relates to a programmable safety system intended to be used for safety functions, in which a fault in a control circuit does not lead to a safety function being disabled, which system comprises monitoring functions containing at least two control units, input terminals separately coupled to both control units, whereby each control unit executes its own instruction set and continuously compares a result from the execution with each other. At least one control unit can access the in and output terminal status of a second control unit and/or a number of flags, and the control units are arranged to monitor the result of respectively executed instruction sets and control that the results of the executions are substantially equivalent.