Computer-implemented systems and methods for determining second content which was not selected by the user but which is related to first content which was selected by the user. In this structure, a sealing glass substrate is mounted on a quartz plate, and a device glass substrate is absorbed by an absorbing plate. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape. Advantageously, during normal active usage, the socket is retracted within the volume enclosed by the body of the computing device. Some examples of the benefits may be, but are not limited to, a more rapid analysis of biopsy specimen digital images, post-processing image capability, and decreased procedure time and diminution of patient bleeding complications and needle discomfort. The center system includes a delivery-schedule setting unit which sets a schedule of delivery, and a contents-delivery unit which delivers the contents to the terminal systems according to the schedule of delivery during a time period when a load on the terminal systems is lower than a predetermined level.