An apparatus is provided for managing productivity associated with retrieval of items in real-time according to various embodiments. The invention simplifies handling of technical medical apparatus and reduces the probability of operating errors by providing a second means for displaying characteristic symbols for the components of the apparatus, thereby allowing manipulation of the characteristic treatment data by touching the symbols on the touch screen surface. Upon execution by the processor, the resource integration program operates to integrate the plurality of resources so that the integrated resources are accessible to the system while balancing the flight loads at the one or more time instances. The extender is positionable to provide egress handles when the second deck section is in the generally vertical position. A semiconductor chip incorporating peripheral circuits, etc. The radio network node adapts transmission power of said at least three reference elements such that an average transmission power, over said two consecutive subcarriers, of said at least three reference elements is equal to a transmission power, for the first subcarrier, of the data elements for said at least three layers.