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,
J
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201
8
,
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225
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14
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91
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pol
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Copy
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ght
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8
Ins
t
i
t
ut
e
o
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d
v
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e
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l
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us
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m
a
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o be
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m
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l
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ond
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t
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ons
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ve
n
w
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n a
f
a
ul
t
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c
ur
s
by
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pl
e
m
e
nt
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a
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hni
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s
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a
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t
s
c
a
n ha
p
pe
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i
t
hi
n
W
S
N
i
nvol
vi
n
g m
a
ny
c
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pone
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s
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t
w
or
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f
f
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e.
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e
pl
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a
t
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s
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e
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of
t
he
m
a
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o
n
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e
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s
t
ha
t
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v
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be
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n i
m
pl
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m
e
nt
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d
ove
r
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he
t
im
e
f
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m
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h
e
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f
a
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t
t
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e
r
a
n
t
.
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u
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l
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t
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of
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a
y
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f
e
r
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o t
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t
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w
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F
i
g
u
re
1.
W
S
N
N
ode
:
A
W
S
N
n
o
de
,
ot
he
r
w
i
s
e
c
a
l
l
e
d a
bi
t
.
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t
i
s
a
no
de
i
n a
s
e
ns
or
s
y
s
t
e
m
t
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t
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s
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up
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d f
o
r
pe
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o
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m
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e
ha
n
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i
n
g
,
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a
t
he
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i
n
g
a
c
t
ua
l
da
t
a
a
nd
s
pe
a
k
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w
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t
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a
s
s
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a
t
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od
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m
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
252
-
88
14
IJ
A
A
S
V
o
l
.
7
,
N
o
.
2
,
Ju
n
e
201
8
:
13
5
–
142
1
36
Fi
g
ur
e
1.
T
y
p
i
cal
W
S
N
B
a
s
e
s
t
a
t
i
on:
T
he
ba
s
e
s
t
a
t
i
on
s
h
o
ul
d
pe
r
f
o
r
m
c
o
m
put
a
t
i
ons
;
hi
g
he
r
m
e
m
or
y
i
s
r
e
qui
r
e
d
a
n
d i
s
f
r
e
q
u
e
n
t
l
y
as
s
o
ci
at
ed
w
i
t
h
b
et
t
er
co
n
t
i
n
u
i
t
y
s
o
u
r
ce t
h
a
n
b
at
t
er
i
es
.
O
n
e ca
n
l
o
o
k
at
t
h
e
b
as
e s
t
at
i
o
n
as
a
n
ar
ea
poi
nt
t
o
t
he
W
S
N
w
he
r
e
t
h
e
ba
s
e
s
t
a
t
i
o
n
'
s
f
u
n
d
a
m
e
n
t
a
l
t
a
r
g
e
t
i
s
t
o
c
o
l
l
e
c
t
d
i
s
t
i
n
g
u
i
s
h
e
d
d
a
t
a
s
t
r
e
n
g
t
h
n
o
d
e
s
i
n
W
S
N
.
T
he
m
a
in
r
ol
e
of
ba
s
e
s
t
a
t
i
on
i
s
t
o
t
r
a
n
s
f
e
r
t
he
r
e
c
e
i
ve
d
da
t
a
f
r
om
no
de
s
t
o
t
he
s
e
r
v
e
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ks
(
L
S
W
S
N
s
)
w
hi
c
h
c
om
pr
i
s
e
s
of
t
ho
us
a
nd
s
o
f
s
e
ns
o
r
s
a
r
e
a
l
s
o
b
a
s
e
d
o
n
va
r
i
o
us
o
b
je
c
t
i
ve
s
of
E
n
e
r
g
y
a
nd
f
l
ow
m
an
ag
em
en
t
.
C
A
H
i
l
a
e
t
[
3]
ha
ve
pr
e
s
e
nt
e
d
a
ut
om
a
ti
c
pa
th
r
e
c
o
ve
r
y
a
nd
e
f
f
i
c
i
e
nt
r
o
ut
i
ng
a
l
g
or
i
t
hm
s
to
m
a
ke
t
h
e
W
S
N
f
a
u
l
t
t
o
l
e
r
a
n
t
.
F
a
u
l
t
t
o
l
e
r
a
n
t
m
u
l
t
i
p
a
t
h
r
o
u
t
i
n
g
s
c
h
e
m
e
f
o
r
e
n
e
r
g
y
e
f
f
i
c
i
e
n
t
w
i
r
e
l
e
s
s
s
e
n
s
o
r
n
e
t
w
o
r
k
(
F
T
M
R
S
)
i
s
b
a
s
e
d
on
m
ul
t
i
pa
t
h da
t
a
r
out
i
n
g s
c
he
m
e
i
n w
hi
c
h
o
ne
of
t
he
s
h
or
t
e
s
t
pa
t
h i
s
us
e
d
f
o
r
m
a
in
da
t
a
r
o
ut
i
n
g a
nd
i
n
t
he
ot
he
r
t
w
o
ba
c
k
u
p
pa
t
hs
a
r
e
us
e
d
a
s
a
l
t
e
r
na
t
i
ve
pa
t
h
f
o
r
f
a
ul
t
y
ne
t
w
o
r
k a
nd
t
o
ha
n
dl
e
t
he
ove
r
l
oa
de
d t
r
a
f
f
i
c
o
n m
a
i
n c
ha
n
ne
l
.
M
a
na
s
vi
[
4
]
e
x
p
l
a
i
n
e
d
t
h
a
t
w
i
r
el
e
s
s
d
ev
i
ces
a
r
e
b
at
t
er
y
p
o
w
er
ed
f
o
r
m
a
i
n
t
a
i
n
i
n
g
p
r
o
t
o
c
o
l
s
i
n
a
n
e
f
f
i
c
i
e
n
t
m
a
n
n
e
r
.
F
l
o
o
d
i
n
g
i
s
a
t
e
c
h
n
i
q
u
e
w
h
i
c
h
c
o
n
t
i
n
u
e
s
u
n
t
i
l
t
h
e
d
e
s
t
i
n
a
t
i
o
n
no
de
i
s
r
e
a
c
he
d
w
hi
c
h r
e
s
ul
t
s
i
n im
pul
s
i
on
or
o
ve
r
l
a
p.
W
he
n s
a
m
e
r
e
gi
on i
s
s
e
n
s
e
d
b
y
t
w
o s
e
ns
or
s
a
nd t
he
s
en
s
e
d
d
at
a i
s
b
r
o
a
d
cas
t
e
d
a
t
t
h
e s
am
e t
i
m
e,
t
h
e
n
ei
g
h
b
o
r
s
w
i
l
l
r
ecei
v
e
t
h
e d
u
p
l
i
cat
e
d
p
ac
k
et
s
w
h
i
c
h
a
re
ove
r
c
om
e
by
g
os
s
i
pi
ng
.
I
n
g
o
s
s
i
pi
n
g
w
he
n a
pa
c
ke
t
i
s
r
e
c
e
i
ve
d,
a
s
e
ns
or
wo
ul
d
s
e
l
e
c
t
o
ne
of
i
t
s
ne
i
g
h
bo
r
s
r
a
n
d
om
ly
a
nd s
e
n
d t
he
pa
c
ke
t
s
t
o ne
i
gh
bo
r
.
T
hi
s
pr
oc
e
s
s
c
ont
i
n
ue
s
u
nt
i
l
a
l
l s
e
ns
o
r
s
r
e
c
e
i
ve
t
hi
s
pa
c
k
e
t
but
t
h
er
e i
s
a
d
el
a
y
p
r
o
b
l
em
i
f
t
h
e n
o
o
f
n
o
d
es
g
et
i
n
c
r
eas
ed
.
T
i
ng Y
ua
n
[
5
]
pr
e
s
e
nt
e
d t
he
s
e
c
ur
i
n
g o
f
t
h
e
d
a
t
a
t
hr
ou
g
h
i
nt
r
o
d
uc
i
n
g
f
a
ul
t
t
ol
e
r
a
nc
e
wi
t
hi
n
W
S
N.
T
he
p
os
i
t
i
on
of
a
gg
r
e
g
a
t
i
ng
a
n
d
f
or
w
a
r
di
ng
t
he
i
n
f
o
r
m
a
ti
on
i
s
k
n
o
w
n
a
s
s
i
n
k
.
A
n
o
d
e
c
a
n
'
t
b
e
e
a
c
h
a
s
i
n
k
a
n
d
a
s
o
u
r
c
e
d
u
e
t
o
t
h
e
f
a
c
t
t
h
i
s
w
i
l
l
s
u
b
s
t
a
n
t
i
a
l
l
y
d
i
s
s
i
p
a
t
e
t
h
e
c
on
s
t
r
a
i
ne
d po
we
r
a
n
d
s
e
c
u
r
i
t
y
s
t
r
e
n
g
t
h
i
s
a
k
ey
m
an
ag
e
m
en
t
s
ch
em
e,
t
a
m
p
er
-
r
e
s
i
s
t
a
n
t
h
a
r
d
w
a
r
e
i
s
s
t
i
l
l
e
c
on
om
i
c
a
l
ly
m
i
s
t
a
ke
n
t
o be
a
ppl
i
e
d i
n l
o
w
-
f
e
e
s
e
ns
or
n
ode
s
,
m
a
ki
ng no
de
c
a
pt
ur
e
e
ve
n m
or
e
a
ppe
a
l
i
ng t
o
put
i
nt
o
e
f
f
e
c
t
.
3.
E
X
I
S
TI
N
G
W
I
R
ELES
S
S
EN
S
O
R
N
ETW
O
R
K
S
A
W
i
r
el
es
s
S
en
s
o
r
n
et
w
o
r
k
i
s
m
a
i
nl
y
us
e
d
f
o
r
c
ont
i
nu
o
us
m
oni
t
o
r
i
n
g a
n
d
p
r
o
c
e
s
s
i
ng
t
h
e
i
nf
or
m
a
t
i
on,
i
n ge
ne
r
a
l
t
he
r
e
a
r
e
s
o m
a
ny e
xi
s
t
i
ng
W
S
N i
n w
hi
c
h
o
ne
o
f
t
he
a
p
p
l
i
c
a
t
i
o
n
s
i
s
d
e
t
a
i
l
e
d
i
n
F
ig
ur
e
2
w
h
i
c
h
s
p
r
i
n
k
l
i
n
g
o
f
w
a
t
e
r
a
n
d
p
e
s
t
i
c
i
d
e
f
o
r
t
u
r
m
e
r
i
c
p
l
a
n
t
a
t
i
o
n
d
e
p
e
n
d
i
n
g
o
n
t
h
e
r
a
n
g
e
of
h
um
id
ity
e
x
i
s
t
e
n
c
e
.
A
f
t
e
r
s
e
n
s
o
r
s
e
n
s
i
n
g
t
h
e
e
x
i
s
t
i
n
g
h
u
m
i
d
i
t
y
v
a
l
u
e
t
h
e
n
i
t
i
n
i
t
i
a
l
i
z
e
s
t
h
e
s
p
r
i
n
k
l
i
n
g
o
f
w
a
t
e
r
i
f
i
t
i
s
be
l
o
w t
he
pr
e
de
f
i
ne
d
.
T
he
e
nt
i
r
e
da
t
a
i
nc
l
udi
ng
d
a
t
e
,
t
i
m
e
,
h
um
i
di
ty
r
a
n
ge
,
l
a
t
i
t
ude
a
n
d l
on
gi
t
u
de
,
w
a
t
e
r
pum
pe
d a
r
e
s
e
nt
us
i
n
g b
a
s
e
s
t
at
i
o
n
s
v
i
a i
n
t
er
n
et
t
o
t
h
e
m
ai
n
s
er
v
e
r
.
T
h
e d
at
a
w
i
l
l
b
e
an
al
y
zed
a
n
d
i
f
a
n
y
s
pe
c
i
f
i
c
i
ns
t
r
uc
t
i
ons
r
e
qui
r
e
d
w
i
l
l
be
s
e
nt
t
o t
he
f
o
r
m
e
r
s
t
hr
ou
g
h S
M
S
m
e
s
s
a
ge
s
a
nd t
he
e
nt
i
r
e
da
t
a
r
e
c
e
i
ve
d
w
i
l
l
b
e
s
t
o
r
e
d
a
t
t
h
e
m
a
i
n
s
e
r
v
e
r
.
Co
n
n
e
c
t
i
v
i
t
y
o
f
t
h
e
m
a
i
n
s
e
r
v
e
r
a
nd t
he
ba
s
e
s
t
a
t
i
on i
s
a
c
hi
e
ve
d t
h
r
o
ug
h a
c
a
bl
e
c
o
n
ne
c
t
i
on
o
r
us
i
n
g
a
c
om
bi
na
t
i
on
of
W
i
-
F
i
/
Ce
l
l
u
l
a
r
i
n
t
e
r
f
a
c
e
.
F
ig
ur
e
2
.
E
xi
s
t
i
ng
W
S
N
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
252
-
88
14
IJ
A
A
S
V
o
l
.
7
,
N
o
.
2
,
Ju
n
e
201
8
:
13
5
–
142
1
38
3
.
1
.
Tr
e
e
To
p
o
l
o
g
y
T
he
i
n
ve
s
t
i
ga
t
i
on
pr
e
s
e
nt
e
d
i
n
t
hi
s
pa
pe
r
s
h
o
ws
h
o
w
t
he
r
e
l
i
a
bi
l
i
t
y
of
a
W
S
N
c
a
n
be
e
n
h
a
nc
e
d
ba
s
e
d
on
ne
t
w
or
ki
n
g
t
opol
ogy
.
T
o
s
t
a
r
t
wi
t
h F
a
ul
t
t
r
e
e
f
or
t
he
e
xi
s
t
i
ng
W
S
N
i
s
de
ve
l
ope
d a
n
d o
ve
r
a
l
l
f
a
ul
t
r
a
t
e
i
s
c
om
put
e
d.
T
he
f
a
ul
t
t
r
e
e
di
a
gr
a
m
f
or
t
he
e
xi
s
t
i
n
g
W
S
N
i
s
s
h
ow
n
i
n
F
i
gu
r
e
3.
F
ig
ur
e
3
.
T
r
e
e
t
op
ol
o
gy
i
n
NS
2
B
y
de
ve
l
o
pi
n
g
t
he
s
e
t
y
pe
o
f
t
r
e
e
t
op
ol
o
gy
wi
l
l
r
e
s
ul
t
i
n
hi
g
h
pa
c
ke
t
l
os
s
,
l
o
w
t
hr
o
ug
h
put
,
hi
g
h
de
l
a
y
e
t
c
.
,
s
o
i
n
o
r
de
r
t
o
a
voi
d
t
he
s
e
t
y
pe
of
f
a
ul
t
s
w
hi
l
e
t
r
a
ns
f
e
r
r
i
n
g
da
t
a
w
e
a
r
e
opt
i
n
g
a
n
ot
h
e
r
t
op
ol
o
gy
kn
ow
n
a
s
but
t
e
r
f
l
y
t
opol
ogy
w
hi
c
h i
s
ha
vi
ng m
ul
t
i
ple
num
be
r
of
i
np
ut
s
a
n
d o
ut
put
s
w
hi
c
h
wi
l
l
he
l
p i
n t
r
a
ns
f
e
r
r
i
n
g
i
nf
or
m
a
t
i
on
i
n
a
ny
pa
t
h.
4.
I
M
P
LEM
E
N
TI
N
G
B
U
TTER
-
F
L
Y
TO
P
O
LO
G
Y
W
I
T
H
I
N
W
I
R
ELES
S
N
ETW
O
R
K
S
I
t
i
s
pos
s
i
bl
e
t
ha
t
t
he
f
a
i
lur
e
r
a
t
e
o
f
t
h
e
ne
t
w
o
r
k c
a
n be
r
e
d
uc
e
d
by
im
pl
e
m
e
n
t
i
ng di
f
f
e
r
e
n
t
t
op
ol
o
gi
e
s
t
ha
n t
he
t
r
e
e
t
o
p
ol
o
gy
us
e
d f
or
t
he
s
a
m
pl
e
W
S
N
.
M
u
l
t
i
-
s
t
a
ge
ne
t
wo
r
k
s
a
r
e
c
om
m
onl
y
us
e
d t
o
co
n
n
ect
a
s
et
o
f
i
n
p
u
t
s
t
o
a
s
et
o
f
o
u
t
p
u
t
s
;
t
h
e
co
n
cep
t
as
s
u
c
h
i
s
s
i
m
il
a
r
t
o
c
l
ou
d
c
om
put
i
ng
.
T
he
c
on
ne
c
t
i
vi
ty
i
s
e
s
t
a
bl
i
s
he
d t
hr
o
ug
h l
i
nks
b
e
t
we
e
n c
om
put
i
ng a
n
d s
wi
t
c
h
i
ng s
y
s
t
e
m
s
.
T
he
s
e
ne
t
wo
r
k
s
us
e
2
X 2 s
w
i
t
c
he
s
.
E
a
c
h s
w
i
t
c
h t
a
ke
s
t
w
o i
n
pu
t
s
a
nd
pr
o
duc
e
s
2 o
ut
p
ut
s
vi
a
di
f
f
e
r
e
nt
c
on
ne
c
t
i
o
ns
(
S
t
r
a
i
g
ht
,
c
r
os
s
,
up
p
e
r
b
r
o
a
d
c
a
s
t
a
n
d
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IJ
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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252
-
88
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IJ
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[1]
S
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boda
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n W
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nat
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of
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d R
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Sc
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and Sof
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ar
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ne
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r
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,
IS
S
N
:
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[2]
C
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(
IJ
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)
,
IS
S
N
:
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2163,
V
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s
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2.
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M
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nna
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S
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4106,
P
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Com
m
uni
c
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ons
69 (2015) 22
–
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[5]
T
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S
hi
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ong Z
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a
ng “
S
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s
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t
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at
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n
al
Confe
re
nc
e
on Com
put
e
r a
nd Inform
a
t
i
on T
e
c
h
nol
og
y
W
orks
hops
,
978
-
0
-
7695
-
3242
-
4/
08 $25.
0
0 © 2008 IE
E
E
D
O
I 10.
1109/
CI
T
.
Evaluation Warning : The document was created with Spire.PDF for Python.