Abstract: A method for determining whether a target cell has experienced interference due to Passive Intermodulation (PIM) distinguished from other forms of interference at cellular network sites during a time window. In one aspect, the method includes defining a set of N time slices and obtaining a first performance metric for each of the N time slices. The method includes selecting a subset of the N time slices using a set of N first performance metrics where the subset of N time slices includes a first time slice. For the first time slice, at least a first data point is determined using a performance metric for the target cell that was collected during the first time slice. The method includes using the first data point and a supervised learning model to determine whether the target cell has experience PIM interference during the time window.

Abstract: A method for determining whether a target cell has experienced interference due to Passive Intermodulation (PIM) distinguished from other forms of interference at cellular network sites during a time window. In one aspect, the method includes defining a set of N time slices and obtaining a first performance metric for each of the N time slices. The method includes selecting a subset of the N time slices using a set of N first performance metrics where the subset of N time slices includes a first time slice. For the first time slice, at least a first data point is determined using a performance metric for the target cell that was collected during the first time slice. The method includes using the first data point and a supervised learning model to determine whether the target cell has experience PIM interference during the time window.

Abstract: An invalid hoist comprises a support 10, an arm 12 pivotally connected to the support 10, drive means for driving the arm 12 for pivotal movement relative to the support 10, and brake means 18 independent of the drive means to apply a braking force to the arm 12 in the event that movement thereof occurs at a speed grater than a predetermined speed.

Abstract: An invalid hoist comprises a support member 10, a bar 12 pivotally connected to the support member 10, drive means for driving the bar 12 for pivotal movement relative to the support member 10 and damper means 18, independent of the drive means, for damping movement of the arm 12 relative to the support member 10.

Abstract: An invalid hoist comprises a support 10, an arm 12 pivotally connected to the support 10, drive means for driving the arm 12 for pivotal movement relative to the support 10, and brake means 18 independent of the drive means to apply a braking force to the arm 12 in the event that movement thereof occurs at a speed grater than a predetermined speed.