<s>
The	O
QosCosGrid	O
is	O
a	O
quasi-opportunistic	B-Operating_System
supercomputing	I-Operating_System
system	O
using	O
grid	B-Architecture
computing	I-Architecture
.	O
</s>
<s>
QosCosGrid	O
acts	O
as	O
middleware	B-General_Concept
resource	O
management	O
facilities	O
which	O
provide	O
end-users	O
with	O
supercomputer-like	O
performance	O
by	O
connecting	O
many	O
computing	O
clusters	O
together	O
.	O
</s>
