Abstract: Implementations provide methods including actions of processing patient data to generate one or more graphical representations of the patient data, at least one graphical representation of the one or more graphical representations including a waveform, displaying at least one waveform segment of the waveform, and displaying calipers associated with the at least one waveform segment, each caliper being associated with an interval, where displaying the calipers includes, for each caliper: receiving a measurement value of the interval associated with the caliper, determining respective positions of a first handle and a second handle of the caliper based on the measurement, and displaying the first handle and the second handle in the respective positions relative to the at least one waveform segment.

Abstract: A heat intensifier for directing radiant heat from a campfire toward a camper situated on the ground adjacent the campfire to enhance the warmth provided by the campfire to the camper includes a collapsible screen having a heat-reflective surface and a frame for attachment to the screen to deploy the screen in a concave-convex configuration in which the heat-reflective surface is located in a position relative to the camper and the campfire to reflect radiated heat from the campfire toward the camper, and anchoring devices for anchoring the attached screen and frame to the ground in that position.