<s>
Scout	B-Operating_System
is	O
a	O
research	O
operating	B-General_Concept
system	I-General_Concept
developed	O
at	O
the	O
University	O
of	O
Arizona	O
.	O
</s>
<s>
The	O
Scout	B-Operating_System
researchers	O
had	O
in	O
mind	O
a	O
class	O
of	O
devices	O
that	O
they	O
called	O
"	O
network	O
appliances	O
"	O
,	O
which	O
include	O
cameras	O
and	O
disks	O
attached	O
to	O
a	O
network	O
.	O
</s>
<s>
To	O
satisfy	O
these	O
three	O
requirements	O
,	O
Scout	B-Operating_System
was	O
designed	O
around	O
an	O
abstraction	O
called	O
a	O
"	O
path	O
"	O
;	O
was	O
highly	O
configurable	O
;	O
and	O
offered	O
scheduling	O
and	O
resource	O
allocation	O
policies	O
that	O
provided	O
predictable	O
performance	O
under	O
load	O
.	O
</s>
