Abstract: A planar reflectarray system provides for bandwidth broadening by employing a tunable (amplitude and phase) feed array. The tunable feed array is adjustable in amplitude and phase to compensate for aberrations by enabling feed re-focusing and field matching. The techniques modestly increase the size of the feed array and use active tuning to effectively correct for de-focusing when operating reflectarrays at frequencies away from the tuned center frequency.

Abstract: A planar reflectarray system provides for bandwidth broadening by employing a tunable (amplitude and phase) feed array. The tunable feed array is adjustable in amplitude and phase to compensate for aberrations by enabling feed re-focusing and field matching. The techniques modestly increase the size of the feed array and use active tuning to effectively correct for de-focusing when operating reflectarrays at frequencies away from the tuned center frequency.

Abstract: Flexible data center systems and methods of deployment are provided. A flexible data center (100, 200) including T rows of server racks (106, 206, 306) can be deployed by constructing a number B of blocks (101, 201). Constructing each block (101, 201) can include constructing from one to a number P of perimeter structures (104, 204, 304) each housing up to a number R of rows of server racks (106, 206, 306). Constructing each block (102, 201) can include constructing a connecting structure (102, 202) connected to the perimeter structures (104, 204, 304), the connecting structure (102, 202) housing operations monitoring equipment (108, 208) for the server racks (106, 206, 306). A total integer number T/R of perimeter structures (104, 204, 304) can be constructed for the flexible data center (100, 200). At most one perimeter structure (10, 204, 304) houses less than R rows of server racks (106, 206, 306). B is equal to an integer number (T/R)/P.

Abstract: Flexible data center systems and methods of deployment are provided. A flexible data center (100, 200) including T rows of server racks (106, 206, 306) can be deployed by constructing a number B of blocks (101, 201). Constructing each block (101, 201) can include constructing from one to a number P of perimeter structures (104, 204, 304) each housing up to a number R of rows of server racks (106, 206, 306). Constructing each block (102, 201) can include constructing a connecting structure (102, 202) connected to the perimeter structures (104, 204, 304), the connecting structure (102, 202) housing operations monitoring equipment (108, 208) for the server racks (106, 206, 306). A total integer number T/R of perimeter structures (104, 204, 304) can be constructed for the flexible data center (100, 200). At most one perimeter structure (10, 204, 304) houses less than R rows of server racks (106, 206, 306). B is equal to an integer number (T/R)/P.

Abstract: A manifold device for a multi-jet pool fixture includes a central chamber having a jet interface surface. An inlet in fluid communication with the central chamber allows fluid to flow into the central chamber and out a plurality of openings disposed in the jet interface surface. An outlet in fluid communication with the central chamber allows water to flow out of the central chamber.

Abstract: A manifold device for a multi-jet pool fixture includes a central chamber having a jet interface surface. An inlet in fluid communication with the central chamber allows fluid to flow into the central chamber and out a plurality of openings disposed in the jet interface surface. An outlet in fluid communication with the central chamber allows water to flow out of the central chamber.

Abstract: Provided is a landscape edging cover, related methods for covering a sharp-edged landscape divider and methods for producing safe landscape edging. In an embodiment the cover has a tapered interior volume that deforms in such a manner so as to tightly receive a landscape divider, and particularly at least a portion of the divider's exposed sharp-edge. The covers can be used to retrofit deployed landscape edging or for landscape edging that has not been deployed.

Abstract: A cover device for protecting a pneumatic tire valve end has a hollow semi-flexible semi-rigid cap and an elongated flexible retaining member integrally attached to the cap. The cap is configured to be releasably force-fitted over the end of the valve to protect the valve end. The retaining member is configured to bend and encircle and thereby attach to either the valve itself or to a tire spoke disposed adjacent to the valve in order to tether the cap to either of these locations such that when the cap is removed from the valve end it is suspended in space adjacent to the valve end by the retaining member.