Abstract: A head-wearable device is configured to hold at least one ultrasound transducer such that it is properly positioned for brain stimulation. Such a head-wearable device can help to ensure that the transducer makes sufficient contact with the user's head to allow for efficient ultrasound coupling. Each device may also ensure that the ultrasound transducer maintains the same orientation and position relative to the head across successive donning and doffing of the device.

Abstract: In one embodiment, an index is created by a first user for a specified video program that is applied when a second user request viewing the specified video program. The index is typically embodied by a file, which identifies one or more content segments of the video program that are not presented to the viewing user. The viewing user selects the program for viewing, typically using a video on-demand service offered by a cable service provider, and potentially indicates the index file to be applied when viewing the program. The cable service provider streams the video program to the user, but excises the one or more content segments identified in the index file, thus providing a customized viewing experience to the viewing user.

Abstract: An expander heat exchanger cycle system provides a fuel or oxidizer routed through a heat exchanger to cool and condense a coolant/turbine drive fluid.

Abstract: Various embodiments can permit electrode configurations that are used in implantable devices to be automatically changed. In some embodiments, configurations that are used to ascertain capture (ventricular and/or atrial) can be automatically changed by a stimulation device and then automatically configured for use. Various parameters associated with the electrical configurations can be automatically calibrated so that a stimulation device's automatic capture feature can continue to function notwithstanding the fact that an electrode configuration change has taken place.