<s>
The	O
relation	O
for	O
heat	O
transfer	O
can	O
be	O
written	O
as	O
an	O
integral	B-Algorithm
equation	I-Algorithm
with	O
boundary	O
conditions	O
based	O
upon	O
surface	O
conditions	O
.	O
</s>
<s>
Kernel	O
functions	O
can	O
be	O
useful	O
in	O
approximating	O
and	O
solving	O
this	O
integral	B-Algorithm
equation	I-Algorithm
.	O
</s>
<s>
Kernel	O
function	O
is	O
also	O
used	O
in	O
integral	B-Algorithm
equation	I-Algorithm
for	O
surface	O
radiation	O
exchanges	O
.	O
</s>
