Abstract: An apparatus comprises at least one processing device comprising a processor coupled to a memory. The at least one processing device is configured to obtain an input visual stimulus, to detect feature points in the input visual stimulus, and to identify densities of the detected feature points in each of two or more distinct regions of the input visual stimulus. The at least one processing device is also configured to determine relative information density in the two or more distinct regions of the input visual stimulus. The at least one processing device is further configured to modify a design of the input visual stimulus to adjust the relative information density among at least two of the two or more distinct regions of the input visual stimulus.

Abstract: An apparatus comprises at least one processing device comprising a processor coupled to a memory. The at least one processing device is configured to obtain an information density matrix for an input visual stimulus, the information density matrix characterizing information density of feature points in the input visual stimulus, and to identify one or more clusters of feature points in the input visual stimulus by performing spatial clustering of the feature points utilizing the information density matrix. The at least one processing device is also configured to determine a cognitive load score for the input visual stimulus based at least in part on the identified one or more clusters of feature points, the cognitive load score characterizing cognitive energy required to mentally process the input visual stimulus. The at least one processing device is further configured to modify a design of the input visual stimulus to adjust the cognitive load score of the input visual stimulus.

Abstract: An apparatus comprises a processing device configured to obtain an information density matrix characterizing information density of feature points in an input visual stimulus, and to analyze content of the input visual stimulus utilizing the information density matrix to identify in the input visual stimulus. The processing device is also configured to evaluate cognitive measures of each of the objects in the input visual stimulus and to estimate a likelihood of a user viewing the input visual stimulus to fixate attention on respective ones of the objects in the input visual stimulus based at least in part on the cognitive measures. The processing device is further configured to modify a design of the input visual stimulus to adjust the estimated likelihood of the user viewing the input visual stimulus to fixate attention on at least one of the objects in the input visual stimulus.

Abstract: The orthodontic bracket includes a base surface mountable to a tooth and with a primary channel formed in an outer surface opposite the base surface. The primary channel is configured to receive an arch wire therein. An axle support such as a tube is located within a lower groove within the primary channel. A retainer clip has an axle residing within the tube. Arms join the axle of the retainer clip to a latch bar. The retainer clip can pivot between an open and closed position, with the latch bar securing the retainer clip in a closed position overlying the arch wire and holding the arch wire within the primary channel. The tube is hidden beneath the arch wire. Alternative axle supports include bores formed in the unitary mass of material forming the bracket with such bores spaced from the primary channel.

Abstract: A rectifier hub and associated cooling method provide increased cooling efficiency for rotating rectifier diodes in a dry cavity generator. The rectifier hub has an inner and an outer circumferential surface and includes at least one pair of flow passages, and at least one flow channel. Each pair of flow passages extends between the hub inner and outer circumferential surfaces, and each flow channel is formed in the hub outer circumferential surface and couples the pair of flow passages in fluid communication with one another. This configuration allows a cooling medium to flow directly across the rectifier hub and cool the rectifier diodes mounted within drive cavities formed in the hub.

Abstract: The coil end-turn segments of a generator exciter rotor are retained using an end-turn retention assembly that includes an inner band and an outer band. The inner band is located around at least a portion of each of the end-turn segments and has two ends. The outer peripheral surface of the inner band is tapered such that the thickness of the inner band varies between its ends. The outer band is located around the inner band and also has two ends. The inner peripheral surface of the outer band is tapered in a fashion that is reverse to that of the inner band outer surface, and such that the outer band thickness varies between its ends. By forming oppositely configured tapers in the inner and outer bands, the outer bands will remain in place and not migrate axially away from the lamination core during exciter rotor rotation.

Abstract: A rectifier hub and associated cooling method provide increased cooling efficiency for rotating rectifier diodes in a dry cavity generator. The rectifier hub has an inner and an outer circumferential surface and includes at least one pair of flow passages, and at least one flow channel. Each pair of flow passages extends between the hub inner and outer circumferential surfaces, and each flow channel is formed in the hub outer circumferential surface and couples the pair of flow passages in fluid communication with one another. This configuration allows a cooling medium to flow directly across the rectifier hub and cool the rectifier diodes mounted within drive cavities formed in the hub.