<s>
In	O
theoretical	O
computer	O
science	O
,	O
DEVS	B-Application
is	O
closed	O
under	O
coupling	O
 [ Zeigper84 ] 	O
 [ ZPK00 ] 	O
.	O
</s>
<s>
In	O
other	O
words	O
,	O
given	O
a	O
coupled	O
DEVS	B-Application
model	O
,	O
its	O
behavior	O
is	O
described	O
as	O
an	O
atomic	O
DEVS	B-Application
model	O
.	O
</s>
<s>
For	O
a	O
given	O
coupled	O
DEVS	B-Application
,	O
once	O
we	O
have	O
an	O
equivalent	O
atomic	O
DEVS	B-Application
,	O
behavior	O
of	O
can	O
be	O
referred	O
to	O
behavior	B-Application
of	I-Application
atomic	I-Application
DEVS	I-Application
which	O
is	O
based	O
on	O
Timed	B-Application
Event	I-Application
System	I-Application
.	O
</s>
<s>
Similar	O
to	O
behavior	B-Application
of	I-Application
atomic	I-Application
DEVS	I-Application
,	O
behavior	O
of	O
the	O
Coupled	O
DEVS	B-Application
class	O
is	O
described	O
depending	O
on	O
definition	O
of	O
the	O
total	O
state	O
set	O
and	O
its	O
handling	O
as	O
follows	O
.	O
</s>
<s>
is	O
the	O
partial	O
state	O
set	O
where	O
is	O
the	O
total	O
state	O
set	O
of	O
component	O
(	O
Refer	O
to	O
View1	O
of	O
Behavior	B-Application
of	I-Application
DEVS	I-Application
)	O
,	O
where	O
is	O
the	O
set	O
of	O
non-negative	O
real	O
numbers	O
.	O
</s>
<s>
is	O
the	O
partial	O
state	O
set	O
where	O
is	O
the	O
total	O
state	O
set	O
of	O
component	O
(	O
Refer	O
to	O
View2	O
of	O
Behavior	B-Application
of	I-Application
DEVS	I-Application
)	O
.	O
</s>
<s>
Since	O
in	O
a	O
coupled	O
DEVS	B-Application
model	O
with	O
non-empty	O
sub-components	O
,	O
i.e.	O
,	O
,	O
the	O
number	O
of	O
clocks	O
which	O
trace	O
their	O
elapsed	O
times	O
are	O
multiple	O
,	O
so	O
time	O
passage	O
of	O
the	O
model	O
is	O
noticeable	O
.	O
</s>
<s>
The	O
behavior	O
of	O
a	O
couple	O
DEVS	B-Application
network	O
whose	O
all	O
sub-components	O
are	O
deterministic	O
DEVS	B-Application
models	O
can	O
be	O
non-deterministic	O
if	O
is	O
non-deterministic	O
.	O
</s>
