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The Dragon 2 DragonFly (Dragon C201) was a prototype suborbital rocket-powered test vehicle for a propulsively-landed version of the SpaceX Dragon 2. DragonFly underwent testing in Texas at the McGregor Rocket Test Facility in October 2015.
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Concerned with problems he saw in the direction FreeBSD 5.x was headed in regards to concurrency, [10] and coupled with the fact that Dillon's access to the FreeBSD source code repository was revoked due to a falling-out with other FreeBSD developers, he started the DragonFly BSD project in 2003, implementing the SMP model using light-weight ...
DragonFly BSD is a free and open-source Unix-like operating system forked from FreeBSD 4.8. Matthew Dillon , an Amiga developer in the late 1980s and early 1990s and FreeBSD developer between 1994 and 2003, began working on DragonFly BSD in June 2003 and announced it on the FreeBSD mailing lists on 16 July 2003.
A virtual kernel architecture (vkernel) is an operating system virtualisation paradigm where kernel code can be compiled to run in the user space, for example, to ease debugging of various kernel-level components, [3] [4] [5] in addition to general-purpose virtualisation and compartmentalisation of system resources.
The eastern amberwing (Perithemis tenera) is a species of dragonfly in the family Libellulidae. It is very small, reaching a total length of no more than 25 millimetres (0.98 in). The males have orange or amber wings. Both sexes have a red pterostigma. [5] The eastern amberwing dragonfly is one of the only types of dragonfly that actively ...
The chasers, darters, skimmers, and perchers and their relatives form the Libellulidae, the largest family of dragonflies. [2] It is sometimes considered to contain the Corduliidae as the subfamily Corduliinae and the Macromiidae as the subfamily Macromiinae.
An eastern pondhawk in the Mallows Bay–Potomac River National Marine Sanctuary.. Nymphs of the eastern pondhawk are identifiable by their green eyes. When they leave the water and moult for the final time, the emerging immature adult is dull olive green but over the course of a few hours, the abdomen becomes bright green, there is dark brown banding and the heads take on a metallic green sheen.