Aestivation also aestivate. Although relatively uncommon, a small number of mammals aestivate. Animal physiologist Kathrin Dausmann of Philipps University of Marburg, Germany, and coworkers presented evidence in a 2004 edition of "Nature" that the Malagasy fat-tailed dwarf lemur hibernates or aestivates in a small tree hole for seven months of the year. According to the Oakland Zoo in California, East African hedgehogs are thought to aestivate during the dry season. Aestivation Aestivation or æstivation (from , summer, but also spelled estivation in American English) is a state of animal dormancy, similar to hibernation, characterized by inactivity and a lowered metabolic rate,
Hibernation (computing) and hibernation: The machine can resume instantaneously, and its state, including open and unsaved files, survives a power outage. Hybrid sleep consumes as much power as sleep mode while hibernation powers down the computer. Early implementations of hibernation used the BIOS, but modern operating systems usually handle hibernation. Hibernation is defined as sleeping mode S4 in the ACPI specification. On Windows computers, hibernation is available only if all hardware and device drivers are ACPI and plug-and-play–compliant. Hibernation can be invoked from the Start menu or the command line. Windows 95 supports hibernation through hardware manufacturer-supplied drivers and only if compatible