<s>
The	O
Architecture	B-Algorithm
Design	I-Algorithm
and	I-Algorithm
Assessment	I-Algorithm
System	I-Algorithm
(	O
ADAS	B-Language
)	O
was	O
a	O
set	O
of	O
software	O
programs	O
offered	O
by	O
the	O
Research	O
Triangle	O
Institute	O
from	O
the	O
mid-1980s	O
until	O
the	O
early	O
1990s	O
.	O
</s>
<s>
Functional	O
simulation	O
of	O
the	O
model	O
could	O
be	O
realized	O
by	O
attaching	O
C	B-Language
or	O
Ada	B-Language
code	O
to	O
the	O
nodes	O
.	O
</s>
<s>
An	O
ADAS	B-Language
model	O
consisted	O
of	O
nodes	O
connected	O
by	O
directed	O
arcs	O
.	O
</s>
