A method for determination of mechanical integrity of bone includes embedding a threaded rod into the bone, extracting the threaded rod out of the bone, and measuring the force required to extract the threaded rod from the bone, wherein the force required to extract the threaded rod is indicative of the mechanical integrity of the bone. The scheduler-assigner includes a software-pipelined instruction scheduler that generates a first software-pipelined instruction schedule based on an intermediate representation that has data flow information in SSA form. In particular, the package delivery method involves receiving the package from the sender and having the sender identify the recipient and specify the date on which the package is to be delivered. The second pressure is the pressure of the hydraulic fluid within a second flow path connecting an accumulator and the pressure control unit. The one or more ports that are below the liquidair interface level may be used as sampling ports or access ports for probes or drains or supply ports for liquids or gases.