I
nte
rna
t
io
na
l J
o
urna
l o
f
E
lect
rica
l a
nd
Co
m
p
ute
r
E
ng
in
ee
ring
(
I
J
E
CE
)
Vo
l.
7
,
No
.
6
,
Dec
em
b
er
201
7
,
p
p
.
3
6
6
9
~
3
6
7
3
I
SS
N:
2088
-
8708
,
DOI
: 1
0
.
1
1
5
9
1
/
i
j
ec
e
.
v
7
i
6
.
pp
3
6
6
9
-
3673
3669
J
o
ur
na
l ho
m
ep
a
g
e
:
h
ttp
:
//ia
e
s
jo
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n
a
l.c
o
m/o
n
lin
e/in
d
ex
.
p
h
p
/I
JE
C
E
Fog
Co
m
pu
ting:
Iss
ues, Challeng
es
a
nd F
ut
ure
Direc
tions
P
ra
k
a
s
h P
,
Da
rsh
a
u
n K
.
G
,
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a
zhlene.
P
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nes
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In
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Art
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ST
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A
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to
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R
ec
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Ma
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5
,
2
0
1
7
R
ev
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J
u
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1
4
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2
0
1
7
A
cc
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ted
J
u
l 2
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2
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1
7
In
Clo
u
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Co
m
p
u
ti
n
g
,
a
ll
th
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p
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ss
in
g
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d
a
ta
c
o
ll
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ted
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e
n
o
d
e
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d
o
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in
th
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f
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m
a
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p
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tatio
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s.
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h
i
s
g
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a
tl
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d
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c
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th
e
ti
m
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in
v
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t
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ff
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tral
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is
n
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e
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.
F
o
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is
q
u
it
e
u
se
f
u
l
in
g
e
o
g
ra
p
h
ica
ll
y
d
isp
e
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d
a
re
a
s
w
h
e
re
c
o
n
n
e
c
ti
v
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y
c
a
n
b
e
irreg
u
lar.
T
h
e
id
e
a
l
u
se
c
a
se
r
e
q
u
ires
in
telli
g
e
n
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e
a
r
th
e
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d
g
e
wh
e
re
u
lt
ra
-
lo
w
late
n
c
y
is
c
rit
ica
l,
a
n
d
is
p
r
o
m
ise
d
b
y
f
o
g
c
o
m
p
u
ti
n
g
.
T
h
e
c
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n
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e
p
ts
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f
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lo
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p
u
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p
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w
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lo
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d
a
n
d
t
h
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ir
f
e
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tu
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s
w
il
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b
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tras
ted
to
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d
w
h
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is
m
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re
e
ff
icie
n
t
a
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d
b
e
tt
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su
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d
f
o
r
re
a
l
-
ti
m
e
a
p
p
li
c
a
ti
o
n
.
K
ey
w
o
r
d
:
Fo
g
co
m
p
u
tin
g
C
lo
u
d
co
m
p
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tin
g
E
d
g
e
n
o
d
es
I
o
T
an
d
B
ig
Data
Co
p
y
rig
h
t
©
2
0
1
7
I
n
stit
u
te o
f
Ad
v
a
n
c
e
d
E
n
g
i
n
e
e
rin
g
a
n
d
S
c
ien
c
e
.
Al
l
rig
h
ts
re
se
rv
e
d
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
P
r
ak
ash
P
,
Dep
ar
t
m
en
t o
f
C
o
m
p
u
ter
Scie
n
ce
an
d
E
n
g
i
n
ee
r
in
g
,
Am
r
ita
Sc
h
o
o
l o
f
E
n
g
i
n
ee
r
in
g
,
C
o
i
m
b
ato
r
e,
Am
r
ita
Vi
s
h
w
a
Vid
y
ap
ee
th
a
m
,
Am
r
ita
Un
iv
er
s
it
y
,
I
n
d
ia
.
1.
I
NT
RO
D
UCT
I
O
N
Net
w
o
r
k
in
g
is
s
h
ap
ed
b
y
t
w
o
o
b
v
io
u
s
tr
en
d
s
-
C
lo
u
d
-
b
ase
d
I
n
ter
n
et
an
d
m
o
b
ile
co
m
p
u
t
in
g
.
C
lo
u
d
co
m
p
u
ti
n
g
[
1
,
2
]
f
o
r
m
s
a
b
as
i
c
n
ee
d
f
o
r
all
o
r
g
an
iza
tio
n
s
th
at
d
ea
l
w
it
h
lar
g
e
a
m
o
u
n
t
o
f
d
ata.
C
lo
u
d
f
o
r
m
s
to
b
e
v
er
y
ef
f
icie
n
t
i
n
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to
r
in
g
lar
g
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m
o
u
n
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ata
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p
r
o
v
id
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ac
ce
s
s
to
it
f
r
o
m
a
n
y
w
h
er
e
in
th
e
w
o
r
ld
.
T
h
is
co
u
ld
lead
to
u
n
a
u
t
h
o
r
ized
ac
ce
s
s
to
p
er
s
o
n
al
d
ata
o
r
a
f
ir
m
's
p
r
iv
ate
d
ata
[
3
]
.
I
n
r
elatio
n
to
clo
u
d
-
co
m
p
u
ti
n
g
,
b
r
in
g
i
n
g
s
er
v
ices
to
th
e
ed
g
e
o
f
th
e
n
et
w
o
r
k
is
f
o
g
co
m
p
u
ti
n
g
.
Fo
g
co
m
p
u
ti
n
g
d
ea
ls
w
it
h
u
s
er
b
eh
av
io
u
r
p
r
o
f
ilin
g
a
n
d
d
ec
o
y
i
n
f
o
r
m
ati
o
n
tec
h
n
o
lo
g
y
to
p
r
ev
en
t
u
n
a
u
th
o
r
ized
ac
ce
s
s
.
I
n
Fo
g
C
o
m
p
u
ti
n
g
,
co
m
p
u
ti
n
g
r
eso
u
r
ce
s
an
d
ap
p
licatio
n
s
er
v
ices
ar
e
d
is
tr
ib
u
ted
in
th
e
m
o
s
t
lo
g
ical,
ef
f
ic
ien
t
p
lace
s
,
at
an
y
p
o
in
t
alo
n
g
th
e
co
n
tin
u
u
m
f
r
o
m
th
e
d
ata
s
o
u
r
ce
to
th
e
clo
u
d
.
Fo
g
co
m
p
u
ti
n
g
is
d
e
f
in
ed
as
"
a
s
ce
n
a
r
io
w
h
ere
a
la
r
g
e
n
u
mb
er
o
f
h
etero
g
en
eo
u
s
w
ir
eles
s
d
ev
ices
a
r
e
co
n
n
ec
ted
to
g
eth
er
in
a
n
etw
o
r
k,
co
mmu
n
ica
te
a
n
d
p
o
ten
tia
lly
co
o
p
era
te
a
m
o
n
g
th
em
a
n
d
w
ith
th
e
n
etw
o
r
k
to
p
erfo
r
m
s
to
r
a
g
e
a
n
d
p
r
o
ce
s
s
in
g
ta
s
ks
w
ith
o
u
t
th
e
in
tr
u
s
io
n
o
f
th
ir
d
p
a
r
ties
"
.
A
lt
h
o
u
g
h
t
h
is
d
ef
in
i
tio
n
i
s
d
eb
atab
le,
th
i
s
d
e
f
i
n
es
h
o
w
f
o
g
co
m
p
u
ti
n
g
d
i
f
f
er
s
f
r
o
m
th
e
r
elate
d
tech
n
o
lo
g
ies.
Fo
g
C
o
m
p
u
ti
n
g
av
o
id
s
p
r
i
m
a
r
il
y
to
s
to
r
e
d
ata
in
lar
g
e
-
s
ca
l
e
d
ata
ce
n
ter
s
.
Fo
g
C
o
m
p
u
t
i
n
g
o
f
f
er
s
a
s
ig
n
i
f
ica
n
t
a
m
o
u
n
t
o
f
m
ea
s
u
r
e
m
en
t,
co
n
tr
o
l
an
d
co
n
f
i
g
u
r
atio
n
is
p
er
f
o
r
m
ed
at
o
r
n
ea
r
th
e
e
n
d
-
u
s
er
.
Fo
g
C
o
m
p
u
tin
g
s
u
p
p
o
r
ts
e
m
er
g
in
g
I
n
ter
n
et
o
f
E
v
er
y
t
h
i
n
g
(
I
o
E
)
ap
p
licatio
n
s
th
at
d
e
m
an
d
r
e
al
-
ti
m
e/p
r
ed
ictab
le
laten
c
y
.
Fo
g
s
u
p
p
o
r
ts
d
en
s
el
y
d
is
tr
i
b
u
ted
d
ata
co
llectio
n
p
o
in
ts
,
t
h
r
o
u
g
h
d
e
v
ices
ca
l
led
F
o
g
n
o
d
es
[
4
]
.
T
h
e
m
aj
o
r
d
if
f
er
en
ce
b
et
w
ee
n
clo
u
d
co
m
p
u
ti
n
g
an
d
Fo
g
co
m
p
u
tin
g
i
s
o
n
t
h
e
s
u
p
p
o
r
t
o
f
lo
ca
t
io
n
a
w
ar
e
n
ess
.
Fo
g
C
o
m
p
u
tin
g
,
co
m
p
o
s
ed
o
f
g
e
o
-
d
is
tr
ib
u
ted
Fo
g
s
er
v
er
s
,
tar
g
ets
to
d
eli
v
er
th
e
lo
ca
l
ized
an
d
lo
ca
tio
n
b
ased
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
6
,
Dec
em
b
er
201
7
:
3
6
6
9
–
3
6
7
3
3670
s
er
v
ices
[
5
]
.
I
t
is
ce
n
tr
alize
d
o
r
d
is
tr
ib
u
ted
in
r
eg
io
n
al
ar
ea
s
.
Fo
g
s
er
v
er
s
h
a
v
e
lo
ca
lized
d
ata
s
to
r
ag
e
ce
n
ter
th
at
av
o
id
s
d
ela
y
in
co
m
p
u
ti
n
g
2.
O
VE
RVI
E
W
Fo
g
co
m
p
u
ti
n
g
i
s
d
e
f
in
ed
a
s
a
d
is
tr
ib
u
ted
co
m
p
u
ti
n
g
p
ar
ad
ig
m
t
h
at
f
u
n
d
a
m
en
tall
y
e
x
ten
d
s
th
e
s
er
v
ices
p
r
o
v
id
ed
b
y
t
h
e
clo
u
d
to
th
e
ed
g
e
o
f
th
e
n
et
w
o
r
k
[
6
]
.
C
is
co
d
ef
in
e
s
it
as
f
o
g
co
m
p
u
ti
n
g
is
co
n
s
id
er
ed
as
an
e
x
te
n
s
io
n
o
f
t
h
e
clo
u
d
c
o
m
p
u
ti
n
g
p
ar
ad
ig
m
f
r
o
m
t
h
e
co
r
e
o
f
n
et
w
o
r
k
to
t
h
e
ed
g
e
o
f
th
e
n
e
t
w
o
r
k
[
7
]
.
I
t
f
ac
ilit
ate
s
th
e
co
m
p
u
tatio
n
,
s
t
o
r
ag
e
an
d
n
et
w
o
r
k
in
g
b
et
w
ee
n
th
e
en
d
d
ev
ices
a
n
d
th
e
tr
ad
itio
n
al
clo
u
d
s
er
v
er
s
.
I
n
s
tead
o
f
r
u
n
n
i
n
g
ap
p
licatio
n
o
n
l
y
i
n
th
e
clo
u
d
,
f
o
g
co
m
p
u
ti
n
g
in
v
o
lv
e
s
th
e
clo
u
d
as
w
el
l
as
th
e
ed
g
e
d
ev
ices
b
et
w
ee
n
t
h
e
e
n
d
d
ev
ic
es
an
d
clo
u
d
s
er
v
er
s
to
r
u
n
t
h
e
ap
p
licatio
n
.
Fo
g
co
m
p
u
ti
n
g
t
ak
es
ad
v
an
ta
g
es
o
f
b
o
th
ed
g
e
an
d
clo
u
d
co
m
p
u
t
in
g
w
h
ile
it
b
en
e
f
its
f
r
o
m
ed
g
e
d
ev
ices
’
clo
s
e
p
r
o
x
i
m
it
y
to
t
h
e
en
d
p
o
in
ts
,
it
also
lev
er
ag
e
s
t
h
e
o
n
-
d
e
m
a
n
d
s
ca
la
b
ilit
y
o
f
c
lo
u
d
r
eso
u
r
ce
s
[
8
]
.
I
t b
asicall
y
r
ed
u
ce
s
t
h
e
lo
ad
o
n
t
h
e
clo
u
d
s
er
v
er
b
y
ef
f
icien
tl
y
u
s
i
n
g
th
e
r
eso
u
r
ce
s
av
ailab
le
in
th
e
ed
g
e
n
o
d
es
t
o
d
o
p
ar
tial
c
o
m
p
u
tatio
n
an
d
also
it
r
ed
u
ce
s
th
e
tr
af
f
ic
to
th
e
clo
u
d
s
er
v
er
b
y
d
o
in
g
f
ilter
i
n
g
o
p
er
atio
n
s
i
n
t
h
e
n
o
d
es.
T
h
er
e
ar
e
m
ai
n
l
y
t
w
o
co
n
ce
p
ts
w
h
ic
h
ar
e
u
s
u
all
y
co
n
f
u
s
ed
w
it
h
f
o
g
co
m
p
u
ti
n
g
.
T
h
ese
co
n
ce
p
ts
ar
e
Mo
b
ile
E
d
g
e
C
o
m
p
u
ti
n
g
(
ME
C
)
an
d
Mo
b
ile
C
lo
u
d
C
o
m
p
u
t
in
g
(
MC
C
)
.
MC
C
b
as
icall
y
s
u
g
g
e
s
ts
th
a
t b
o
th
th
e
d
ata
s
to
r
ag
e
a
n
d
d
ata
p
r
o
ce
s
s
i
n
g
is
d
o
n
e
o
u
t
s
id
e
th
e
m
o
b
ile
in
a
c
lo
u
d
.
So
it
m
o
v
es
t
h
e
d
ata
an
d
co
m
p
u
ti
n
g
p
o
w
er
f
r
o
m
t
h
e
i
n
d
iv
id
u
al
m
o
b
ile
to
th
e
clo
u
d
.
ME
C
is
s
i
m
i
lar
to
th
at
o
f
a
C
lo
u
d
let.
I
t
ca
n
b
e
s
ee
n
as
a
clo
u
d
co
m
p
u
ti
n
g
p
ar
ad
ig
m
i
n
a
m
o
r
e
co
n
ce
n
tr
ated
.
I
t
is
lik
e
a
clo
u
d
s
er
v
er
r
u
n
n
in
g
o
n
a
n
ed
g
e
o
f
a
m
o
b
ile
n
et
w
o
r
k
[
9
]
.
Fo
g
co
m
p
u
ti
n
g
is
a
m
ix
t
u
r
e
o
f
t
w
o
o
f
th
e
s
e
co
n
ce
p
ts
alo
n
g
w
it
h
f
ea
tu
r
es
o
f
its
o
w
n
m
a
k
i
n
g
it
m
o
r
e
r
eliab
le
an
d
u
s
e
f
u
l.
3.
I
SS
U
E
S
Fo
g
co
m
p
u
ti
n
g
ex
te
n
d
s
c
lo
u
d
co
m
p
u
ti
n
g
a
n
d
ac
ts
o
n
I
n
ter
n
et
o
f
T
h
in
g
s
.
T
h
ese
d
e
v
ices,
ca
lled
th
e
f
o
g
n
o
d
es
ca
n
b
e
d
ep
lo
y
ed
in
an
y
e
n
v
ir
o
n
m
en
t
w
ith
a
n
e
t
w
o
r
k
co
n
n
ec
tio
n
.
Fo
g
co
m
p
u
ti
n
g
h
as
ad
d
itio
n
al
s
to
r
ag
e
r
eso
u
r
ce
s
at
th
e
ed
g
e
s
to
p
r
o
ce
s
s
t
h
e
r
eq
u
ir
e
m
e
n
ts
.
Hen
ce
,
t
h
e
Fo
g
s
er
v
er
n
ee
d
s
t
o
ad
ap
t
its
s
er
v
ices
lead
in
g
to
m
a
n
a
g
e
m
e
n
t
a
n
d
m
ai
n
ten
a
n
ce
co
s
t.
I
n
ad
d
itio
n
,
th
e
o
p
er
ato
r
n
ee
d
s
to
en
co
u
n
ter
th
e
f
o
llo
w
i
n
g
is
s
u
es:
3
.
1
.
P
riv
a
cy
Fo
g
co
m
p
u
ti
n
g
b
ein
g
d
o
m
i
n
a
ted
b
y
w
ir
eles
s
p
r
i
m
ar
il
y
,
t
h
e
r
e
is
a
b
ig
co
n
ce
r
n
f
o
r
n
et
w
o
r
k
p
r
iv
ac
y
.
Net
w
o
r
k
o
p
er
ato
r
g
en
er
ates
co
n
f
i
g
u
r
atio
n
s
m
an
u
all
y
,
f
o
g
n
o
d
es
b
ein
g
d
ep
lo
y
ed
at
th
e
ed
g
e
o
f
I
n
ter
n
et,
m
as
s
i
v
e
m
ain
ten
a
n
ce
co
s
t
is
in
v
o
lv
ed
[
1
0
]
.
T
h
e
le
ak
a
g
e
o
f
p
r
iv
ate
d
ata
is
g
ai
n
i
n
g
att
en
tio
n
w
h
ile
u
s
i
n
g
n
et
w
o
r
k
s
.
T
h
e
en
d
u
s
er
s
ar
e
m
o
r
e
ac
ce
s
s
ib
le
to
t
h
e
Fo
g
n
o
d
es.
B
ec
au
s
e
o
f
t
h
i
s
,
m
o
r
e
s
e
n
s
iti
v
e
in
f
o
r
m
a
tio
n
i
s
co
llected
b
y
Fo
g
n
o
d
es
th
a
n
r
e
m
o
te
clo
u
d
.
E
n
cr
y
p
tio
n
m
et
h
o
d
s
lik
e
H
A
N
(
Ho
m
e
-
A
r
ea
N
et
w
o
r
k
)
ca
n
b
e
u
s
ed
to
co
u
n
ter
th
e
s
e
is
s
u
e
s
.
3
.
2
.
Securit
y
T
h
e
m
ai
n
s
ec
u
r
it
y
is
s
u
e
i
s
th
e
au
th
e
n
ticatio
n
o
f
th
e
d
ev
ices
in
v
o
l
v
ed
in
f
o
g
co
m
p
u
ti
n
g
at
d
if
f
er
en
t
g
ate
w
a
y
s
.
E
ac
h
ap
p
lian
ce
h
a
s
its
o
w
n
I
P
ad
d
r
ess
.
A
m
ali
cio
u
s
u
s
er
m
a
y
u
s
e
a
f
ak
e
I
P
ad
d
r
ess
to
ac
ce
s
s
in
f
o
r
m
atio
n
s
to
r
ed
o
n
t
h
e
p
ar
t
icu
lar
f
o
g
n
o
d
e.
T
o
o
v
er
co
m
e
th
i
s
ac
ce
s
s
co
n
tr
o
l
an
i
n
tr
u
s
i
o
n
d
etec
tio
n
s
y
s
te
m
h
as to
b
e
ap
p
lied
at
all
lay
er
s
o
f
th
e
p
lat
f
o
r
m
[
1
1
]
.
3
.
3
.
Net
w
o
rk
M
a
na
g
em
e
nt
B
ein
g
co
n
n
ec
ted
to
h
eter
o
g
en
eo
u
s
d
ev
ice
s
,
m
a
n
ag
in
g
th
e
f
o
g
n
o
d
es,
th
e
n
e
t
w
o
r
k
,
c
o
n
n
ec
tio
n
b
et
w
ee
n
ea
ch
n
o
d
es
w
ill b
e
b
u
r
d
en
u
n
le
s
s
S
DN
an
d
NF
V
tec
h
n
iq
u
es a
r
e
ap
p
lied
[
1
2
]
.
3
.
4
.
P
la
ce
m
ent
o
f
F
o
g
Serv
er
s
P
lacin
g
a
g
r
o
u
p
o
f
f
o
g
s
er
v
er
s
in
s
u
ch
a
w
a
y
t
h
at
th
e
y
d
eliv
er
m
ax
i
m
u
m
s
er
v
ice
t
o
th
e
lo
ca
l
r
eq
u
ir
e
m
en
ts
is
a
n
is
s
u
e.
An
al
y
zi
n
g
t
h
e
w
o
r
k
d
o
n
e
in
ea
c
h
n
o
d
e
in
th
e
s
er
v
er
b
ef
o
r
e
p
lacin
g
th
e
m
r
ed
u
ce
s
t
h
e
m
ai
n
ten
a
n
ce
co
s
t [
1
3
]
.
3
.
5
.
Dela
y
in
Co
m
p
uting
Dela
y
s
d
u
e
to
Data
a
g
g
r
eg
atio
n
,
R
e
s
o
u
r
ce
o
v
er
-
u
s
ag
e
r
ed
u
c
es
th
e
e
f
f
ec
ti
v
es
o
f
s
er
v
ices
p
r
o
v
id
ed
b
y
th
e
f
o
g
s
er
v
er
s
,
ca
u
s
i
n
g
d
ela
y
in
co
m
p
u
ti
n
g
d
ata.
Da
ta
Ag
g
r
eg
atio
n
s
h
o
u
ld
tak
e
p
lace
b
ef
o
r
e
d
ata
p
r
o
ce
s
s
in
g
,
R
eso
u
r
ce
-
li
m
ited
f
o
g
n
o
d
es s
h
o
u
ld
b
e
d
esig
n
ed
s
c
h
ed
u
li
n
g
b
y
u
s
in
g
p
r
io
r
it
y
an
d
m
o
b
il
it
y
m
o
d
el.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2088
-
8708
F
o
g
C
o
mp
u
tin
g
:
I
s
s
u
es,
C
h
a
llen
g
es a
n
d
F
u
tu
r
e
Dir
ec
tio
n
s
(
P
r
a
ka
s
h
P
)
3671
3
.
6
.
E
nerg
y
Co
ns
u
m
ptio
n
Sin
ce
f
o
g
en
v
ir
o
n
m
e
n
ts
u
s
e
l
ar
g
e
n
u
m
b
er
o
f
f
o
g
n
o
d
es,
t
h
e
co
m
p
u
tat
io
n
i
s
d
is
tr
ib
u
ted
a
n
d
ca
n
b
e
less
e
n
er
g
y
-
e
f
f
icie
n
t.
Hen
ce
,
r
ed
u
ctio
n
o
f
e
n
er
g
y
co
n
s
u
m
p
ti
o
n
in
f
o
g
co
m
p
u
ti
n
g
i
s
ess
e
n
ti
al
[
1
4
]
.
4.
AP
P
L
I
CA
T
I
O
N
S
Fo
g
co
m
p
u
ti
n
g
h
av
e
h
u
g
e
b
en
ef
it
s
i
n
th
e
r
ea
l
t
i
m
e
ap
p
licatio
n
s
.
I
t
is
b
r
o
ad
ly
u
s
e
d
in
I
OT
ap
p
licatio
n
s
w
h
ic
h
i
n
v
o
l
v
es
r
ea
l
ti
m
e
d
ata.
I
t
ac
t
s
as
an
ex
te
n
d
ed
v
er
s
io
n
o
f
clo
u
d
co
m
p
u
ti
n
g
.
I
t
is
a
n
in
ter
m
ed
iate
b
et
w
ee
n
t
h
e
clo
u
d
an
d
en
d
u
s
er
s
(
clo
s
er
to
en
d
u
s
er
s
)
.
I
t
ca
n
u
s
ed
i
n
b
o
th
th
e
w
a
y
s
,
t
h
at
ca
n
b
e
b
et
w
ee
n
m
ac
h
i
n
e
an
d
m
ac
h
i
n
e
o
r
b
etw
ee
n
th
e
h
u
m
a
n
to
m
a
ch
in
e.
4
.
1
.
M
o
bil
e
B
ig
Da
t
a
Ana
ly
t
i
cs
I
n
I
OT
(
I
n
ter
n
et
o
f
th
i
n
g
s
)
d
ata
is
co
llected
i
n
b
u
lk
an
d
it
ca
n
’
t
b
e
s
to
r
ed
i
n
clo
u
d
(
No
t
ef
f
icie
n
t
en
o
u
g
h
)
.
I
n
s
u
c
h
s
it
u
atio
n
s
it
is
b
en
ef
icial
to
u
s
e
f
o
g
co
m
p
u
tin
g
in
s
tead
o
f
clo
u
d
co
m
p
u
ti
n
g
a
s
f
o
g
n
o
d
es
ar
e
m
u
c
h
clo
s
er
to
en
d
s
y
s
te
m
s
.
I
t
also
eli
m
i
n
ates
o
th
er
p
r
o
b
le
m
s
s
u
c
h
as
d
ela
y
,
tr
af
f
ic,
p
r
o
ce
s
s
in
g
s
p
ee
d
,
d
eliv
er
y
ti
m
e,
r
esp
o
n
s
e
ti
m
e,
s
to
r
ag
e
d
ata
tr
an
s
p
o
r
tatio
n
an
d
d
ata
p
r
o
ce
s
s
in
g
.
Fo
g
co
m
p
u
tin
g
co
u
ld
b
e
th
e
f
u
tu
r
e
o
f
I
OT
ap
p
licatio
n
s
.
4
.
2
.
Wa
t
er
P
re
s
s
ure
a
t
Da
m
s
Sen
s
o
r
s
i
n
s
tal
led
in
d
a
m
s
s
e
n
d
d
ata
to
th
e
clo
u
d
w
h
er
e
th
e
d
ata
is
an
al
y
ze
d
an
d
o
f
f
icials
ar
e
aler
ted
in
ca
s
e
o
f
an
y
d
i
s
cr
ep
an
cies.
T
h
e
p
r
o
b
lem
f
ac
ed
h
er
e
is
th
e
d
ela
y
o
f
i
n
f
o
r
m
atio
n
w
h
ic
h
c
o
u
ld
b
e
d
an
g
er
o
u
s
.
T
o
s
o
lv
e
th
is
,
Fo
g
is
u
s
ed
,
a
n
d
s
i
n
ce
it
i
s
n
ea
r
t
h
e
e
n
d
s
y
s
te
m
s
it
i
s
ea
s
ier
to
tr
an
s
m
it
d
ata
,
an
al
y
ze
it
a
n
d
g
iv
e
in
s
ta
n
ta
n
eo
u
s
f
ee
d
b
ac
k
.
4
.
3
.
S
m
a
rt
Ut
ility
Serv
ice
Her
e
t
h
e
m
ai
n
ai
m
is
to
co
n
s
e
r
v
e
ti
m
e
,
m
o
n
e
y
a
n
d
en
er
g
y
.
T
h
e
an
al
y
s
is
o
f
d
ata
n
ee
d
s
to
r
u
n
e
v
er
y
m
i
n
u
te
to
s
ta
y
u
p
d
ated
.
T
h
is
m
o
s
t
l
y
i
n
v
o
lv
e
s
t
h
e
en
d
u
s
e
r
s
th
er
e
f
o
r
e
clo
u
d
m
ig
h
t
n
o
t
s
er
v
e
t
h
e
p
u
r
p
o
s
e.
T
h
ese
ap
p
licatio
n
s
in
f
o
r
m
u
s
e
r
s
ev
er
y
d
a
y
a
s
to
w
h
ic
h
ap
p
li
an
ce
s
co
n
s
er
v
e
m
o
r
e
en
er
g
y
.
I
OT
also
cr
ea
tes
a
lo
t o
f
tr
af
f
ic
in
t
h
e
n
e
t
w
o
r
k
wh
er
e
s
en
d
i
n
g
o
t
h
er
d
ata
is
d
if
f
i
cu
lt t
h
er
ef
o
r
e
f
o
g
i
s
a
g
o
o
d
alter
n
ativ
e.
4
.
4
.
H
e
a
lt
h Da
t
a
W
h
en
d
ata
n
ee
d
s
to
b
e
tr
an
s
f
e
r
r
ed
f
r
o
m
o
n
e
h
o
s
p
ital
to
an
o
t
h
er
h
i
g
h
s
ec
u
r
it
y
a
n
d
d
ata
in
t
eg
r
it
y
i
s
a
m
u
s
t.
T
h
is
ca
n
b
e
p
r
o
v
id
ed
b
y
u
s
i
n
g
Fo
g
s
i
n
ce
t
h
e
d
ata
is
tr
an
s
f
er
r
ed
lo
ca
ll
y
.
T
h
ese
f
o
g
n
o
d
es
ca
n
b
e
u
s
ed
b
y
t
h
e
lab
s
to
u
p
d
ate
th
e
p
atien
t
’
s
lab
r
ec
o
r
d
s
w
h
ic
h
ca
n
b
e
ac
ce
s
s
ed
b
y
t
h
e
n
ea
r
b
y
h
o
s
p
itals
ea
s
il
y
.
Har
d
co
p
ies
o
f
m
ed
ical
h
i
s
to
r
y
a
n
d
h
ea
lth
is
s
u
es
o
f
a
p
atie
n
t
n
ee
d
n
o
t
b
e
ca
r
r
ied
as
th
e
s
e
u
n
i
f
ied
r
ec
o
r
d
s
ca
n
b
e
ac
ce
s
s
ed
b
y
a
n
y
d
o
cto
r
.
5.
ARCH
I
T
E
C
T
UR
E
On
e
m
a
j
o
r
p
r
o
b
lem
f
ac
ed
w
it
h
clo
u
d
co
m
p
u
ti
n
g
is
t
h
e
b
an
d
w
id
t
h
,
esp
ec
iall
y
o
n
w
ir
ele
s
s
n
et
w
o
r
k
s
.
T
h
e
p
r
o
b
lem
o
n
l
y
i
n
cr
ea
s
es
a
s
th
e
I
n
ter
n
et
o
f
t
h
i
n
g
s
co
n
ti
n
u
e
s
to
ex
p
an
d
w
it
h
a
lar
g
e
n
u
m
b
er
o
f
p
h
y
s
ical
o
b
j
ec
ts
co
n
n
ec
ted
w
ir
eles
s
l
y
.
Fo
g
co
m
p
u
t
in
g
s
o
l
v
es
t
h
i
s
p
r
o
b
l
em
b
y
s
to
r
i
n
g
d
ata
i
n
l
o
ca
l
co
m
p
u
ter
s
an
d
d
ev
ices
g
en
er
all
y
r
ef
er
r
ed
to
as
f
o
g
n
o
d
es.
An
y
d
e
v
ice
w
it
h
co
m
p
u
ti
n
g
,
s
to
r
ag
e
a
n
d
n
et
w
o
r
k
co
n
n
ec
tiv
it
y
ca
n
b
e
u
tili
ze
d
as
a
f
o
g
n
o
d
e
e.
g
.
h
an
d
-
h
e
ld
d
ev
ices,
tab
let
s
,
P
C
’
s
,
r
o
u
ter
s
e
tc.
T
h
ese
f
o
g
n
o
d
es
ar
e
m
a
n
ag
ed
b
y
Fo
g
Data
Ser
v
ice
w
h
ich
s
er
v
es
v
ar
io
u
s
p
u
r
p
o
s
es
li
k
e
co
n
tr
o
l
an
d
s
ec
u
r
it
y
o
f
d
ata,
d
ata
r
ed
u
ctio
n
,
d
ata
v
ir
tu
a
lizatio
n
a
n
d
ed
g
e
an
al
y
ti
cs.
Data
co
u
ld
also
b
e
s
en
t to
t
h
e
clo
u
d
f
o
r
lo
n
g
ter
m
a
n
al
y
ti
cs.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2088
-
8708
I
J
E
C
E
Vo
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7
,
No
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6
,
Dec
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201
7
:
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3672
Fig
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ices
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to
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m
ited
in
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u
n
icatio
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is
th
r
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u
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P
n
et
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s
.
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o
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ar
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h
e
p
ar
a
m
eter
s
o
f
f
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co
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p
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n
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p
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ti
n
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,
Mo
b
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s
u
p
p
o
r
ted
w
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i
n
clo
u
d
it
'
s
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m
ited
.
T
h
e
n
u
m
b
er
o
f
s
er
v
ice
n
o
d
es
in
f
o
g
is
m
o
r
e
t
h
an
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n
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h
e
o
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e
r
.
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ea
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ti
m
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ter
ac
tio
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ar
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u
p
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ted
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h
ile
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t
'
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.
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it
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5
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2088
-
8708
F
o
g
C
o
mp
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g
:
I
s
s
u
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C
h
a
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es a
n
d
F
u
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e
Dir
ec
tio
n
s
(
P
r
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ka
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)
3673
7.
CO
NCLU
SI
O
N
Fo
g
C
o
m
p
u
ti
n
g
a
n
d
its
ap
p
lic
atio
n
s
h
as
b
ee
n
d
is
c
u
s
s
ed
.
Fo
g
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.
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k
e
m
o
b
ili
t
y
,
p
r
o
x
i
m
it
y
to
e
n
d
-
u
s
er
s
,
lo
w
late
n
c
y
,
lo
ca
tio
n
a
w
ar
e
n
es
s
,
h
e
ter
o
g
en
ei
t
y
a
n
d
d
u
e
to
its
r
ea
l
-
ti
m
e
ap
p
licatio
n
s
f
o
g
co
m
p
u
ti
n
g
p
lat
f
o
r
m
i
s
co
n
s
id
er
ed
as
th
e
ap
p
r
o
p
r
iate
p
latf
o
r
m
f
o
r
I
n
ter
n
et
o
f
T
h
in
g
s
.
Fo
g
co
m
p
u
ti
n
g
is
en
ter
in
g
a
n
ex
citi
n
g
ti
m
e,
w
h
er
e
it
ca
n
p
o
s
itiv
el
y
af
f
ec
t
o
p
er
atio
n
al
co
s
ts
.
Fo
g
co
m
p
u
ti
n
g
r
eso
l
v
es
p
r
o
b
le
m
s
r
elate
d
to
co
n
g
e
s
tio
n
,
s
p
ac
e
a
n
d
i
n
ter
n
et
tr
af
f
ic.
Fo
g
co
m
p
u
ti
n
g
also
p
r
o
v
id
e
s
an
in
tell
ig
e
n
t
p
latf
o
r
m
to
m
an
ag
e
t
h
e
d
is
tr
ib
u
ted
an
d
r
ea
l
-
ti
m
e
n
at
u
r
e
o
f
e
m
er
g
in
g
I
o
T
in
f
r
astru
c
tu
r
es
.
Dev
elo
p
in
g
th
e
s
e
s
er
v
ices
at
th
e
ed
g
e
th
r
o
u
g
h
f
o
g
co
m
p
u
tin
g
w
ill
lead
to
n
e
w
b
u
s
in
e
s
s
m
o
d
el
s
an
d
o
p
p
o
r
tu
n
itie
s
f
o
r
n
et
w
o
r
k
o
p
er
ato
r
s
.
RE
F
E
R
E
NC
E
S
[1
]
S
a
n
g
e
e
th
a
K.S
,
P
ra
k
a
sh
P
,
"
Bi
g
Da
t
a
a
n
d
c
l
o
u
d
:
A
s
u
rv
e
y
"
,
(2
0
1
5
)
A
d
v
a
n
c
e
s
in
In
telli
g
e
n
t
S
y
ste
m
s
a
n
d
Co
m
p
u
ti
n
g
,
3
2
5
,
p
p
.
7
7
3
-
7
7
8
.
[2
]
S
h
iv
a
Je
g
a
n
R.
D,
V
a
su
d
e
v
a
n
S
.
K,
A
b
a
rn
a
K.,
P
ra
k
a
sh
P
,
S
riv
a
th
sa
n
S
.
,
G
a
n
g
o
th
ri
V
.
,
"
Clo
u
d
c
o
mp
u
ti
n
g
:
A
T
e
c
h
n
ica
l
G
a
wk
"
,
(2
0
1
4
)
In
ter
n
a
t
io
n
a
l
J
o
u
r
n
a
l
o
f
A
p
p
li
e
d
E
n
g
in
e
e
rin
g
Re
se
a
rc
h
,
9
(1
4
),
p
p
.
2
5
3
9
-
2
5
5
4
.
[3
]
V
iraj
G
.
M
a
n
d
lek
a
r,
V
ires
h
Ku
m
a
r
M
a
h
a
le,
S
a
n
k
e
t
S
.
S
a
n
c
h
e
ti
,
M
a
a
z
S
.
Ra
is,
"
S
u
rv
e
y
o
n
Fo
g
Co
mp
u
ti
n
g
M
it
ig
a
ti
n
g
Da
t
a
T
h
e
ft
At
t
a
c
k
s
in
Clo
u
d
"
,
I
n
tern
a
ti
o
n
a
l
Jo
u
r
n
a
l
o
f
In
n
o
v
a
ti
v
e
Re
s
e
a
rc
h
in
Co
m
p
u
ter
S
c
ien
c
e
&
T
e
c
h
n
o
lo
g
y
,
No
v
-
2
0
1
4
.
[4
]
Ra
m
in
El
a
h
i,
"
F
o
g
C
o
mp
u
ti
n
g
a
n
d
it
s E
c
o
sy
ste
m
"
,
S
NI
A
G
lo
b
a
l
E
d
u
c
a
ti
o
n
,
2
0
1
5
.
[5
]
T
o
m
H.
L
u
a
n
,
L
o
n
g
x
ian
g
G
a
o
,
Zh
i
L
i,
Ya
n
g
X
ian
g
,
G
u
iy
i
W
e
,
a
n
d
L
im
in
S
u
n
,
"
F
o
g
Co
mp
u
ti
n
g
:
Fo
c
u
sin
g
o
n
mo
b
il
e
Us
e
rs
a
t
t
h
e
E
d
g
e
"
,
M
a
r
2
0
1
6
.
[6
]
S
h
a
n
h
e
Yi
,
Zh
e
n
g
ru
i
Qin
a
n
d
Qu
n
L
i,
“
S
e
c
u
rity
a
n
d
Priva
c
y
Iss
u
e
s
o
f
Fo
g
Co
mp
u
ti
n
g
:
A
S
u
rv
e
y
”
,
In
tern
a
ti
o
n
a
l
Co
n
f
e
re
n
c
e
o
n
W
irele
ss
A
l
g
o
rit
h
m
s,
S
y
st
e
m
s,
a
n
d
A
p
p
li
c
a
ti
o
n
s,
2
0
1
5
,
p
p
.
6
8
5
-
6
9
5
.
[7
]
S
h
a
n
h
e
Yi,
Z
ij
ian
g
Ha
o
,
Zh
e
n
g
ru
i
Qi
n
,
a
n
d
Q
u
n
L
i,
"
F
o
g
C
o
mp
u
ti
n
g
:
Pl
a
tf
o
rm
a
n
d
A
p
p
l
ica
t
io
n
s"
,
d
e
p
t.
Of
Co
m
p
u
ter S
c
ien
c
e
,
Co
ll
e
g
e
o
f
W
il
li
a
m
a
n
d
M
a
ry
,
IEE
E
-
2
0
1
5
.
[8
]
Ha
rsh
it
G
u
p
ta,
Am
ir
V
a
h
i
d
Da
stj
e
rd
i,
S
o
u
m
y
a
K.
G
h
o
sh
a
n
d
Ra
jk
u
m
a
r
Bu
y
y
a
,
“
iF
o
g
S
im:
A
T
o
o
lkit
fo
r
M
o
d
e
li
n
g
a
n
d
S
imu
l
a
ti
o
n
o
f
Res
o
u
rc
e
M
a
n
a
g
e
me
n
t
T
e
c
h
n
i
q
u
e
s
in
In
ter
n
e
t
o
f
T
h
i
n
g
s,
E
d
g
e
a
n
d
Fo
g
Co
m
p
u
t
in
g
En
v
iro
n
me
n
ts
”
,
Clo
u
d
Co
m
p
u
ti
n
g
a
n
d
Distrib
u
ted
S
y
ste
m
s
L
a
b
o
ra
to
ry
,
T
h
e
Un
iv
e
rsit
y
o
f
M
e
l
b
o
u
rn
e
,
Ju
n
e
6
,
2
0
1
6
.
[9
]
S
h
a
n
h
e
Yi,
Z
ij
ian
g
Ha
o
,
Zh
e
n
g
ru
i
Qi
n
,
a
n
d
Q
u
n
L
i,
"
F
o
g
C
o
mp
u
ti
n
g
:
Pl
a
tf
o
rm
a
n
d
A
p
p
l
ica
t
io
n
s"
,
d
e
p
t.
Of
Co
m
p
u
ter S
c
ien
c
e
,
Co
ll
e
g
e
o
f
W
il
li
a
m
a
n
d
M
a
ry
,
IEE
E
-
2
0
1
5
.
[1
0
]
S
h
a
n
h
e
Yi,
Zh
e
n
g
ru
i
Qin
,
a
n
d
Qu
n
L
i,
"
S
e
c
u
rity
a
n
d
Priva
c
y
I
ss
u
e
s
Of
Fo
g
C
o
mp
u
ti
n
g
:
A
S
u
r
v
e
y
"
,
Co
ll
e
g
e
o
f
W
il
li
a
m
a
n
d
M
a
ry
.
[1
1
]
S
h
a
n
h
e
Yi
,
Zi
ji
a
n
g
Ha
o
,
Z
h
e
n
g
ru
i
Qin
,
a
n
d
Qu
n
L
i,
"
Fo
g
C
o
mp
u
ti
n
g
:
Pl
a
t
fo
rm
a
n
d
A
p
p
li
c
a
t
i
ons
"
,
d
e
p
t.
Of
Co
m
p
u
ter S
c
ien
c
e
,
Co
ll
e
g
e
o
f
W
il
li
a
m
a
n
d
M
a
ry
,
IEE
E
-
2
0
1
5
.
[1
2
]
S
h
a
n
h
e
Yi,
Z
ij
ian
g
Ha
o
,
Zh
e
n
g
ru
i
Qi
n
,
a
n
d
Q
u
n
L
i,
"
F
o
g
C
o
mp
u
ti
n
g
:
Pl
a
tf
o
rm
a
n
d
A
p
p
l
ica
t
io
n
s"
,
d
e
p
t.
Of
Co
m
p
u
ter S
c
ien
c
e
,
Co
ll
e
g
e
o
f
W
il
li
a
m
a
n
d
M
a
ry
,
IEE
E
-
2
0
1
5
.
[1
3
]
T
o
m
H.
L
u
a
n
,
L
o
n
g
x
ian
g
G
a
o
,
Zh
i
L
i,
Ya
n
g
X
ian
g
,
G
u
iy
i
W
e
,
a
n
d
L
im
in
S
u
n
,
"
F
o
g
Co
mp
u
ti
n
g
:
Fo
c
u
sin
g
o
n
mo
b
il
e
Us
e
rs
a
t
t
h
e
E
d
g
e
"
,
M
a
r
2
0
1
6
.
[1
4
]
Am
ir
V
a
h
id
Da
stjerd
i
,
Ha
rsh
it
G
u
p
ta,
Ro
d
r
ig
o
N.
Ca
lh
e
iro
s,
S
o
u
m
y
a
K.
G
h
o
sh
,
a
n
d
Ra
jk
u
m
a
r
Bu
y
y
a
,
"
Fo
g
Co
mp
u
t
in
g
:
Pri
n
c
ip
les
,
Arc
h
i
tec
tu
re
s,
a
n
d
A
p
p
l
ica
ti
o
n
s"
,
IEE
E
-
2
1
0
1
6
.
[1
5
]
A
n
u
j
Ku
m
a
r,
K.P
S
a
h
a
ra
n
,
"
F
o
g
i
n
c
o
mp
a
ris
o
n
t
o
c
lo
u
d
:
A
su
rv
e
y
"
,
In
tern
a
ti
o
n
a
l
Jo
u
r
n
a
l
o
f
Co
m
p
u
ter
A
p
p
li
c
a
ti
o
n
s,
Ju
l
-
2
0
1
5
.
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