<s>
The	O
Semantic	B-Device
Sensor	I-Device
Web	I-Device
(	O
SSW	O
)	O
is	O
a	O
marriage	O
of	O
sensor	B-Algorithm
web	I-Algorithm
and	O
semantic	O
Web	O
technologies	O
.	O
</s>
<s>
This	O
technique	O
builds	O
on	O
current	O
standardization	O
efforts	O
within	O
the	O
Open	O
Geospatial	B-General_Concept
Consortium	O
's	O
Sensor	B-Algorithm
Web	I-Algorithm
Enablement	O
(	O
SWE	O
)	O
and	O
extends	O
them	O
with	O
Semantic	O
Web	O
technologies	O
to	O
provide	O
enhanced	O
descriptions	O
and	O
access	O
to	O
sensor	O
data	O
.	O
</s>
<s>
Ontologies	O
and	O
other	O
semantic	O
technologies	O
can	O
be	O
key	O
enabling	O
technologies	O
for	O
sensor	O
networks	O
because	O
they	O
will	O
improve	O
semantic	O
interoperability	O
and	O
integration	O
,	O
as	O
well	O
as	O
facilitate	O
reasoning	O
,	O
classification	O
and	O
other	O
types	O
of	O
assurance	O
and	O
automation	O
not	O
included	O
in	O
the	O
Open	O
Geospatial	B-General_Concept
Consortium	O
(	O
OGC	O
)	O
standards	O
.	O
</s>
<s>
A	O
semantic	O
sensor	O
network	O
will	O
allow	O
the	O
network	O
,	O
its	O
sensors	B-Application
and	O
the	O
resulting	O
data	O
to	O
be	O
organised	O
,	O
installed	O
and	O
managed	O
,	O
queried	O
,	O
understood	O
and	O
controlled	O
through	O
high-level	O
specifications	O
.	O
</s>
<s>
Ontologies	O
for	O
sensors	B-Application
provide	O
a	O
framework	O
for	O
describing	O
sensors	B-Application
.	O
</s>
<s>
These	O
ontologies	O
allow	O
classification	O
and	O
reasoning	O
on	O
the	O
capabilities	O
and	O
measurements	O
of	O
sensors	B-Application
,	O
provenance	O
of	O
measurements	O
and	O
may	O
allow	O
reasoning	O
about	O
individual	O
sensors	B-Application
as	O
well	O
as	O
reasoning	O
about	O
the	O
connection	O
of	O
a	O
number	O
of	O
sensors	B-Application
as	O
a	O
macroinstrument	O
.	O
</s>
<s>
The	O
SSN	O
ontology	O
is	O
encoded	O
in	O
the	O
Web	B-Language
Ontology	I-Language
Language	I-Language
(	O
OWL2	O
)	O
.	O
</s>
<s>
Sensors	B-Application
around	O
the	O
globe	O
currently	O
collect	O
avalanches	O
of	O
data	O
about	O
the	O
world	O
.	O
</s>
<s>
Semantic	B-Device
Sensor	I-Device
Web	I-Device
(	O
SSW	O
)	O
technologies	O
are	O
utilized	O
in	O
fields	O
such	O
as	O
agriculture	O
,	O
disaster	O
management	O
,	O
building	O
management	O
and	O
laboratory	O
management	O
.	O
</s>
<s>
Environmental	O
attributes	O
that	O
are	O
critical	O
for	O
growers	B-Protocol
are	O
mainly	O
temperature	O
,	O
moisture	O
,	O
pH	O
,	O
electric	O
conductivity	O
(	O
EC	O
)	O
,	O
and	O
more	O
.	O
</s>
<s>
Real-time	O
monitoring	O
in	O
addition	O
to	O
setting	O
alerts	O
for	O
the	O
mentioned	O
sensors	B-Application
was	O
never	O
possible	O
.	O
</s>
<s>
With	O
the	O
creation	O
of	O
SSW	O
,	O
growers	B-Protocol
can	O
now	O
track	O
their	O
plant	O
growing	O
conditions	O
in	O
real-time	O
.	O
</s>
<s>
SSW	O
allows	O
for	O
getting	O
notified	O
of	O
water	O
leaks	O
,	O
controlling	O
apartment	O
temperature	O
via	O
smartphone	B-Application
,	O
and	O
more	O
.	O
</s>
<s>
Advancements	O
in	O
SSW	O
allow	O
for	O
real-time	O
monitoring	O
of	O
laboratory	O
variables	O
via	O
sensors	B-Application
.	O
</s>
<s>
Such	O
sensors	B-Application
can	O
take	O
more	O
than	O
one	O
factor	O
into	O
consideration	O
before	O
alerting	O
.	O
</s>
<s>
Open	O
Geospatial	B-General_Concept
Consortium	O
(	O
OGC	O
)	O
,	O
an	O
international	O
voluntary	O
consensus	O
standards	O
organization	O
that	O
was	O
founded	O
in	O
1994	O
,	O
is	O
making	O
efforts	O
to	O
enhance	O
and	O
accelerate	O
the	O
growth	O
of	O
the	O
SSW	O
community	O
and	O
standardize	O
sensor	O
information	O
across	O
web	O
.	O
</s>
<s>
Also	O
,	O
OGC	O
had	O
enabled	O
Sensor	B-Algorithm
Web	I-Algorithm
communication	O
.	O
</s>
<s>
OGC	O
is	O
in	O
charge	O
of	O
creating	O
open	O
geospatial	B-General_Concept
standards	O
.	O
</s>
<s>
Current	O
challenges	O
in	O
the	O
SSW	O
field	O
include	O
a	O
lack	O
of	O
standardization	O
,	O
which	O
slows	O
down	O
the	O
growth	O
rate	O
of	O
sensors	B-Application
created	O
to	O
measure	O
things	O
.	O
</s>
<s>
For	O
the	O
semantic	B-Device
sensor	I-Device
web	I-Device
to	O
be	O
meaningful	O
,	O
the	O
languages	O
,	O
tags	O
,	O
and	O
labels	O
across	O
various	O
applications	O
,	O
developed	O
by	O
various	O
developers	O
,	O
must	O
be	O
the	O
same	O
.	O
</s>
<s>
The	O
only	O
solution	O
remaining	O
is	O
changing	O
the	O
hardware	B-Architecture
requirements	O
,	O
which	O
requires	O
a	O
lot	O
of	O
resources	O
.	O
</s>
