<s>
(	O
see	O
Behavior	B-Application
of	I-Application
DEVS	I-Application
)	O
.	O
</s>
<s>
Since	O
the	O
behavior	O
of	O
a	O
given	O
atomic	O
DEVS	O
model	O
can	O
be	O
defined	O
in	O
two	O
different	O
views	O
depending	O
on	O
the	O
total	O
state	O
and	O
the	O
external	O
transition	O
function	O
(	O
refer	O
to	O
Behavior	B-Application
of	I-Application
DEVS	I-Application
)	O
,	O
the	O
simulation	O
algorithms	O
are	O
also	O
introduced	O
in	O
two	O
different	O
views	O
as	O
below	O
.	O
</s>
<s>
As	O
addressed	O
in	O
Behavior	B-Application
of	I-Application
Atomic	I-Application
DEVS	I-Application
,	O
when	O
DEVS	O
receives	O
an	O
input	O
event	O
,	O
right	O
calling	O
,	O
the	O
last	O
event	O
time	O
,	O
is	O
set	O
by	O
the	O
current	O
time	O
,,	O
thus	O
the	O
elapsed	O
time	O
becomes	O
zero	O
because	O
.	O
</s>
<s>
Notice	O
that	O
as	O
addressed	O
in	O
Behavior	B-Application
of	I-Application
Atomic	I-Application
DEVS	I-Application
,	O
depending	O
on	O
the	O
value	O
of	O
return	O
by	O
,	O
last	O
event	O
time	O
,,	O
and	O
next	O
event	O
time	O
,,	O
consequently	O
,	O
elapsed	O
time	O
,	O
,	O
and	O
lifespan	O
,	O
are	O
updated	O
(	O
if	O
)	O
or	O
preserved	O
(	O
if	O
)	O
.	O
</s>
