Abstract: A command to update a volume level of a group comprising a first and a second playback device to a requested group volume level is detected, the requested group volume level indicating respective requested volume levels for the first and second playback devices. Based on the command, (i) a first volume state variable of the first playback device is determined to be adjusted based on a first maximum volume state variable and (ii) a second volume state variable of the second playback device is determined to be adjusted based on a second maximum volume state variable. Based on the first and second maximum volume state variables, the volume level of the playback group is adjusted to an alternate group volume level different from the requested group volume level. An indication that the volume level of the playback group has been adjusted to the requested group volume level is provided.

Abstract: In a method for managing a vehicle fleet using operational and maintenance data, wherein the improvement comprises the steps of also using financial, environmental, and industry data.

Abstract: For fleet maintenance a point of performance pre-operations condition capture system includes the use of RFID tags and associated sensors positioned at various vehicle locations to sense operating conditions at the vehicle, with the pre-operations condition provided by a scanner that scans the RFID tags for ascertaining the identity of a sensor and the sensed operational state, such that pre-operations condition can be ascertained and verified due to the RFID tag scanning.

Abstract: A user is provided with a portable performance support device that allows the user to be connected with all relevant information required for a task; determines the relevance and priority of a task; assesses an event or condition and provides knowledge to the user by collecting information from actions taken, learning from said actions and making knowledge gained therefrom available to the user.

Abstract: Fleet management is apprised of the effects of driver's performance through the use of a driver performance index that is a relative calculation of how well a driver is operating equipment in which the driver performance index is tailorable to each organization so that the relative value of each element of the calculation can be weighted, with the driver performance index including metrics that indicate the way the vehicle is being operated whether before, during or after the operating period.

Abstract: A ladder safety device (10) for stabilizing a ladder (11) leaning against a horizontal bead (14) of a gutter (15) secured adjacent the edge of a building, said safety device including a portable, hand-held, jaw-mounting body (19) having first and second jaw members (20 and 21) adapted, when the device is inoperative, to be spaced from one another, whereby the device may be brought to usage position and the body fitted over the bead (14) so that the bead is accommodated between the two jaw members. Actuating members (22) associated with said body cause closing together of the jaw members and effect clamping of the bead relative thereto, and, when the device is in use and said actuating means is rendered operative, ladder securing means (23) on the jaw-mounting body are adapted to be secured to the ladder to restrain relative motion between the ladder and the body.

Abstract: A demountable cable reel comprising a pair of end flanges, each end flange having an inwardly facing spool connecting boss, and a generally cylindrical spool having two or more spool elements. The spool connecting boss of each end flange is engagable with the spool by axial alignment of complementary teeth on each boss and a respective spool element. A damaged spool element may be removed and replaced without having to unwind a cable on the reel.