Abstract: Phased arrays to be used for Tx and Rx communications in different frequency bands are disclosed. The phased arrays presented herein are non-uniformly thinned half-duplex phased arrays with dual-band antenna elements. Such phased arrays are “half-duplex” in that they are configured for communication in one direction at a time, i.e., either for Tx or for Rx, while utilizing a common array. Such phased arrays are “with dual-band antenna elements” in that, in addition to using antenna elements configured for Tx or for Rx only, they implement some antenna elements that are configured for both Tx and Rx. Such phased arrays are “thinned” in that they are formed according to a method of optimizing array geometry known as “thinning.” Such phased arrays are thinned “non-uniformly” in that different antenna elements used for Tx may have different numbers of nearest and/or second-nearest neighbor antenna elements used for Rx, or vice versa.

Abstract: Phased arrays to be used for Tx and Rx communications in different frequency bands are disclosed. The phased arrays presented herein are non-uniformly thinned half-duplex phased arrays with dual-band antenna elements. Such phased arrays are “half-duplex” in that they are configured for communication in one direction at a time, i.e., either for Tx or for Rx, while utilizing a common array. Such phased arrays are “with dual-band antenna elements” in that, in addition to using antenna elements configured for Tx or for Rx only, they implement some antenna elements that are configured for both Tx and Rx. Such phased arrays are “thinned” in that they are formed according to a method of optimizing array geometry known as “thinning.” Such phased arrays are thinned “non-uniformly” in that different antenna elements used for Tx may have different numbers of nearest and/or second-nearest neighbor antenna elements used for Rx, or vice versa.

Abstract: To optimize training data used by a predictive real-estate valuation model, a search space having multiple dimensions may be defined. Each search dimension corresponds to a range of candidate values for a search criterion for selecting subsets of sales-transaction records. The multiple dimensions include a temporal dimension and a geographic dimension. An accuracy-optimized subset of a multiplicity of sales-transaction records is identified by evaluating points that vary along each dimension within the multi-dimension search space. A statistical measure of model accuracy is used to evaluate each candidate point. The accuracy-optimized subset of the multiplicity of sales-transaction records is provided to a predictive model to generate an automated value prediction for a subject real-estate property as of an effective date.

Abstract: To optimize training data used by a predictive real-estate valuation model, a search space having multiple dimensions may be defined. Each search dimension corresponds to a range of candidate values for a search criterion for selecting subsets of sales-transaction records. The multiple dimensions include a temporal dimension and a geographic dimension. An accuracy-optimized subset of a multiplicity of sales-transaction records is identified by evaluating points that vary along each dimension within the multi-dimension search space. A statistical measure of model accuracy is used to evaluate each candidate point. The accuracy-optimized subset of the multiplicity of sales-transaction records is provided to a predictive model to generate an automated value prediction for a subject real-estate property as of an effective date.

Abstract: A preferred embodiment of the present invention provides a cell site base station configuration for a wireless communications system that makes use of a sectorized base station co-located with an omnidirectional base station. The sectorized base station has a sectorized antenna system and the omnidirectional base station has an omnidirectional antenna. The configuration may also include a controller that monitors the base station for communications links subject to adverse conditions and reassigns any such links to the omnidirectional base station. The adverse conditions monitored for may include multiple fade, equipment failure and a lack of available channels. The controller may also monitor the omnidirectional base station for links that can be moved to the sectorized base station and reassign any such links to the sectorized base station. The configuration may also include a network that interconnects the sectorized base station, the omnidirectional base station and the controller.

Abstract: A laboratory-scale device for assisting in the simulation of heat setting conditions includes a pair of laterally spaced-apart flexible heat-resistant cords (e.g., formed of aramid fibers) tensioned between forward and rearward rigid cross-support bars. At least one rigid tensioning bar is provided parallel to the support cords and extending between the cross-support bars so as to maintain the desired tension on the flexible heat-resistant cords. The tensioning bar thus allows for manual or automated lateral winding of the synthetic heat-settable fibers or yarns about the spaced-apart heat-resistant cords during preparation of the device for a laboratory test run. The tensioning bar may thereafter be removed once the device has been secured in position with the laboratory heat-setting oven. In such a manner, therefore, various effects on heat-setting conditions simulating can be investigated.