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p
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K
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B
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Data
p
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Dig
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Facu
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1.
I
NT
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tech
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ted
[
1
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.
A
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[
3
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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N:
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alize
d
ap
p
r
o
ac
h
.
E
ac
h
b
lo
ck
w
i
th
i
n
a
b
lo
ck
ch
ai
n
is
id
e
n
ti
f
ied
b
y
a
h
as
h
v
alu
e,
u
s
u
all
y
g
en
er
a
ted
b
y
t
h
e
2
5
6
-
b
it
SH
A
2
5
6
cr
y
p
to
g
r
ap
h
ic
al
g
o
r
it
h
m
[
4
]
.
B
lo
ck
ch
ai
n
tech
n
o
lo
g
y
i
s
p
r
esen
ted
as
a
s
o
lu
tio
n
w
it
h
th
e
p
o
ten
tial
to
g
en
er
ate
s
i
g
n
i
f
ican
t
ch
an
g
es.
I
ts
m
ai
n
ch
ar
ac
ter
is
tic,
th
e
i
m
m
u
tab
il
it
y
a
n
d
d
ec
en
tr
alize
d
d
is
tr
ib
u
tio
n
o
f
r
ec
o
r
d
s
,
o
p
en
s
t
h
e
d
o
o
r
to
th
e
cr
ea
tio
n
o
f
h
i
g
h
l
y
s
ec
u
r
e
an
d
r
eliab
le
d
o
cu
m
e
n
t
v
er
if
ica
tio
n
s
y
s
te
m
s
.
B
y
eli
m
i
n
ati
n
g
th
e
n
ee
d
f
o
r
ce
n
tr
alize
d
in
ter
m
ed
iar
ies
an
d
allo
w
i
n
g
m
u
ltip
le
p
ar
ties
to
ac
ce
s
s
an
d
v
er
if
y
in
f
o
r
m
a
tio
n
tr
an
s
p
ar
en
tl
y
,
b
lo
ck
c
h
ai
n
ca
n
s
tr
ea
m
li
n
e
g
o
v
er
n
m
en
t
p
r
o
ce
s
s
es
an
d
s
ig
n
i
f
ica
n
tl
y
r
e
d
u
ce
th
e
p
o
s
s
ib
ilit
y
o
f
f
r
a
u
d
an
d
h
u
m
an
er
r
o
r
[
5
]
.
T
h
is
r
esear
ch
ai
m
s
to
ex
p
lo
r
e
in
d
etail
th
e
f
u
n
ctio
n
s
an
d
ap
p
licatio
n
s
o
f
b
lo
ck
c
h
ai
n
tech
n
o
lo
g
y
in
d
o
cu
m
e
n
t
v
er
if
ica
tio
n
f
o
r
g
o
v
er
n
m
e
n
t p
r
o
ce
d
u
r
es in
P
er
ú
.
2.
M
E
T
H
O
D
T
o
co
n
d
u
ct
th
is
s
y
s
te
m
a
tic
lit
er
atu
r
e
r
ev
ie
w
,
a
s
ea
r
ch
w
as
co
n
d
u
cted
in
t
h
e
Sco
p
u
s
d
ata
b
ase
u
s
i
n
g
k
e
y
ter
m
s
s
u
c
h
a
s
"
b
lo
ck
ch
a
in
AND
g
o
v
er
n
m
e
n
t
AND
s
y
s
te
m
AND
e
-
g
o
v
er
n
m
e
n
t"
t
o
id
en
ti
f
y
s
t
u
d
ies
an
al
y
z
in
g
t
h
e
ap
p
licatio
n
o
f
b
lo
ck
ch
ai
n
i
n
g
o
v
er
n
m
e
n
t
an
d
e
-
g
o
v
er
n
m
en
t
s
y
s
te
m
s
.
T
o
ex
p
an
d
co
v
er
a
g
e,
r
elate
d
ter
m
s
s
u
c
h
as
"
b
lo
ck
ch
ai
n
,
"
"
b
lo
ck
ch
ain
ch
a
i
n
,
"
"
p
2
p
,
"
"
p
r
iv
ac
y
,
"
an
d
"
e
-
g
o
v
er
n
m
en
t"
w
er
e
in
co
r
p
o
r
ated
[
6
]
,
y
ield
i
n
g
an
in
it
ial
to
tal
o
f
1
9
9
ar
ticl
es.
Su
b
s
eq
u
e
n
tl
y
,
d
ate
f
ilter
s
(
2
0
2
2
-
2
0
2
5
)
an
d
ac
ce
s
s
ib
ilit
y
(
o
p
en
ac
ce
s
s
in
E
n
g
l
is
h
o
r
Sp
an
is
h
)
w
er
e
ap
p
lied
,
r
ed
u
cin
g
th
e
s
el
ec
tio
n
to
8
7
ar
ticles.
Fin
all
y
,
af
ter
an
as
s
es
s
m
e
n
t o
f
r
elev
a
n
ce
an
d
q
u
alit
y
,
5
6
ar
ticles
w
er
e
s
elec
ted
to
f
o
r
m
th
e
b
asi
s
o
f
th
e
s
t
u
d
y
.
I
n
th
e
co
n
te
x
t
o
f
g
o
v
er
n
m
en
t
ad
m
in
is
tr
ati
v
e
p
r
o
ce
d
u
r
es
in
P
er
u
,
th
e
i
m
p
le
m
e
n
tatio
n
o
f
b
lo
ck
ch
ai
n
f
o
r
d
o
cu
m
e
n
t
a
u
t
h
en
tica
tio
n
h
as
e
m
er
g
ed
as
a
n
in
n
o
v
ati
v
e
an
d
p
r
o
m
is
i
n
g
ap
p
r
o
ac
h
.
R
at
h
er
th
an
p
er
f
o
r
m
i
n
g
an
ex
h
au
s
ti
v
e
s
tati
s
tical
a
n
al
y
s
i
s
,
th
i
s
r
esear
ch
f
o
llo
w
s
a
s
y
s
te
m
a
tic
r
ev
ie
w
m
et
h
o
d
o
lo
g
y
,
e
x
clu
d
i
n
g
m
eta
-
an
al
y
s
is
an
d
ad
h
er
i
n
g
to
th
e
g
u
id
eli
n
e
s
f
o
r
s
y
s
te
m
a
tic
liter
atu
r
e
r
ev
ie
w
s
.
T
o
d
ef
in
e
th
e
s
co
p
e
an
d
f
o
r
m
u
late
r
esear
ch
q
u
esti
o
n
s
,
th
e
p
r
o
b
lem
/p
o
p
u
lat
io
n
,
in
ter
v
en
ti
o
n
,
co
m
p
ar
is
o
n
,
o
u
tco
m
es,
co
n
tex
t
(
P
I
C
OC
)
f
r
a
m
e
w
o
r
k
[
7
]
w
a
s
e
m
p
lo
y
ed
,
th
e
b
r
ea
k
d
o
w
n
o
f
w
h
ich
i
s
p
r
esen
ted
in
T
ab
le
1
,
alo
n
g
w
it
h
t
h
e
ass
o
ciate
d
k
e
y
w
o
r
d
s
a
n
d
ter
m
s
u
s
ed
f
o
r
s
ea
r
ch
i
n
g
s
o
u
r
ce
s
s
u
c
h
as
Sco
p
u
s
.
T
h
e
r
esear
ch
q
u
es
tio
n
s
,
w
h
ic
h
in
teg
r
ate
t
h
e
co
m
p
o
n
e
n
t
s
o
f
P
I
C
OC
,
ar
e
f
u
n
d
a
m
e
n
tal
to
g
u
id
e
t
h
e
s
elec
t
i
o
n
a
n
d
e
x
tr
ac
tio
n
o
f
r
ele
v
an
t
d
ata,
d
ir
ec
tin
g
t
h
e
ex
p
lo
r
atio
n
o
f
k
e
y
d
o
cu
m
en
t
s
f
o
r
th
is
s
t
u
d
y
.
T
ab
le
1
.
R
esear
ch
q
u
esti
o
n
s
R
e
se
a
r
c
h
q
u
e
st
i
o
n
s
R
Q
1
:
W
h
a
t
a
r
e
t
h
e
sp
e
c
i
f
i
c
d
o
c
u
me
n
t
e
d
a
p
p
l
i
c
a
t
i
o
n
s
o
f
b
l
o
c
k
c
h
a
i
n
i
n
t
h
e
f
i
e
l
d
o
f
d
o
c
u
me
n
t
m
a
n
a
g
e
me
n
t
i
n
e
-
g
o
v
e
r
n
me
n
t
?
R
Q
2
:
W
h
a
t
a
r
e
t
h
e
a
d
v
a
n
t
a
g
e
s i
d
e
n
t
i
f
i
e
d
w
h
e
n
u
si
n
g
b
l
o
c
k
c
h
a
i
n
f
o
r
d
o
c
u
m
e
n
t
ma
n
a
g
e
me
n
t
i
n
t
h
e
c
o
n
t
e
x
t
o
f
e
-
g
o
v
e
r
n
me
n
t
c
o
m
p
a
r
e
d
t
o
t
r
a
d
i
t
i
o
n
a
l
me
t
h
o
d
s?
R
Q
3
:
H
o
w
b
l
o
c
k
c
h
a
i
n
ma
n
a
g
e
me
n
t
,
v
e
r
i
f
i
c
a
t
i
o
n
,
a
n
d
a
u
t
h
e
n
t
i
c
a
t
i
o
n
a
p
p
l
i
c
a
t
i
o
n
s
h
a
v
e
b
e
e
n
u
se
d
i
n
t
h
e
f
i
e
l
d
o
f
s
e
c
u
r
i
t
y
w
i
t
h
i
n
e
l
e
c
t
r
o
n
i
c
g
o
v
e
r
n
me
n
t
?
R
Q
4
:
W
h
a
t
i
s
t
h
e
l
e
v
e
l
o
f
r
e
l
i
a
b
i
l
i
t
y
a
n
d
se
c
u
r
i
t
y
o
f
b
l
o
c
k
c
h
a
i
n
i
m
p
l
e
me
n
t
a
t
i
o
n
s
u
se
d
i
n
d
o
c
u
me
n
t
ma
n
a
g
e
me
n
t
w
i
t
h
i
n
t
h
e
f
r
a
me
w
o
r
k
o
f
e
l
e
c
t
r
o
n
i
c
g
o
v
e
r
n
me
n
t
?
R
Q
5
:
W
h
a
t
i
s
t
h
e
i
m
p
a
c
t
o
f
t
h
e
i
mp
l
e
me
n
t
a
t
i
o
n
o
f
b
l
o
c
k
c
h
a
i
n
o
n
t
h
e
e
f
f
i
c
i
e
n
c
y
a
n
d
se
c
u
r
i
t
y
o
f
d
o
c
u
me
n
t
ma
n
a
g
e
me
n
t
i
n
a
d
m
i
n
i
st
r
a
t
i
v
e
p
r
o
c
e
sse
s i
n
t
h
e
f
i
e
l
d
o
f
e
l
e
c
t
r
o
n
i
c
g
o
v
e
r
n
me
n
t
?
T
ab
le
2
p
r
esen
ts
th
e
P
I
C
O
el
e
m
en
ts
to
g
et
h
er
w
it
h
th
eir
ass
o
ciate
d
k
ey
w
o
r
d
s
,
w
h
ic
h
w
er
e
ess
en
tia
l
f
o
r
th
e
s
ea
r
c
h
f
o
r
r
ele
v
an
t
a
r
ticles.
T
h
e
s
ea
r
ch
eq
u
atio
n
s
,
b
ased
o
n
t
h
e
s
e
lecte
d
s
o
u
r
c
es,
ar
e
d
etailed
in
T
ab
le
3
.
Du
r
in
g
th
e
p
r
o
ce
s
s
o
f
id
en
tify
i
n
g
ar
ticles
in
th
e
Sco
p
u
s
d
atab
ase,
s
p
ec
if
ic
in
cl
u
s
io
n
an
d
ex
clu
s
io
n
cr
iter
ia
w
er
e
ap
p
lied
,
to
s
elec
t
th
e
m
o
s
t
r
elev
an
t
ar
ticles
f
o
r
th
e
r
ev
ie
w
.
T
h
is
s
elec
tio
n
ap
p
r
o
ac
h
en
s
u
r
ed
th
at
o
n
l
y
t
h
o
s
e
ar
ticle
s
t
h
at
m
et
t
h
e
estab
lis
h
ed
cr
iter
ia
w
er
e
in
c
lu
d
ed
in
t
h
e
s
tu
d
y
,
f
o
llo
w
i
n
g
a
r
ig
o
r
o
u
s
p
r
o
ce
s
s
b
ased
o
n
clea
r
cr
iter
ia.
T
h
e
d
e
tails
o
f
t
h
ese
cr
iter
ia
ar
e
s
p
ec
if
ied
in
T
ab
le
4
.
I
n
th
e
co
n
tex
t
o
f
th
is
s
y
s
te
m
a
tic
r
ev
ie
w
,
a
s
tan
d
ar
d
ized
m
e
t
h
o
d
f
o
r
ar
ticle
in
clu
s
io
n
w
as
ap
p
lied
,
t
o
ass
is
t
in
t
h
e
id
en
ti
f
icat
io
n
o
f
s
o
u
r
ce
s
an
d
d
o
cu
m
e
n
ts
r
ele
v
an
t
to
th
is
s
t
u
d
y
.
T
h
e
p
r
ef
er
r
ed
r
ep
o
r
tin
g
ite
m
s
f
o
r
s
y
s
te
m
a
tic
r
ev
ie
w
s
an
d
m
e
ta
-
an
a
l
y
s
es
(
P
R
I
SM
A
)
ap
p
r
o
ac
h
,
as
illu
s
tr
ated
in
Fig
u
r
e
1
,
w
a
s
u
s
ed
to
s
elec
t
s
o
u
r
ce
s
t
h
at
w
o
u
ld
co
n
tr
ib
u
te
to
th
e
s
et
o
f
ar
ticles
f
o
r
f
u
r
t
h
er
an
al
y
s
i
s
o
n
th
e
to
p
ic
u
n
d
er
d
is
cu
s
s
io
n
.
T
h
e
p
r
o
ce
s
s
b
eg
an
w
it
h
an
i
n
itia
l
s
ea
r
ch
f
o
r
ar
ticles
u
s
i
n
g
a
p
r
ed
ef
in
ed
eq
u
atio
n
in
t
h
e
Sco
p
u
s
d
atab
ase,
w
h
ich
r
esu
lted
i
n
1
9
0
ar
ticles.
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I
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N
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0
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8
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I
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p
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g
,
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15
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I1
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k
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t
.
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1
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si
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e
s o
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C
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2
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x
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me
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.
C
E
3
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p
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a
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E
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.
C
I4
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c
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C
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4
:
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x
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l
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si
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r
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s t
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Fig
u
r
e
1
.
Flo
w
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t o
f
i
n
clu
s
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o
n
an
d
ex
cl
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s
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n
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f
ar
ticles
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
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&
C
o
m
p
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n
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I
SS
N:
2088
-
8708
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ates
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in
v
o
ice
m
an
a
g
e
m
e
n
t,
b
lo
ck
ch
ain
-
b
ased
p
latf
o
r
m
s
f
o
r
s
h
ar
i
n
g
o
f
f
icial
d
o
cu
m
e
n
t
s
,
an
d
d
ec
en
tr
alize
d
s
o
lu
tio
n
s
f
o
r
d
o
cu
m
en
t
a
u
th
e
n
ticat
io
n
i
n
g
o
v
er
n
m
e
n
t
p
r
o
ce
s
s
es
[
8
]
–
[
1
2
]
.
Fu
r
th
er
m
o
r
e,
R
Q2
,
w
h
i
ch
in
v
esti
g
ate
s
th
e
ad
v
an
ta
g
es
o
f
b
lo
ck
ch
a
in
co
m
p
ar
ed
to
tr
ad
itio
n
al
m
eth
o
d
s
,
s
u
g
g
e
s
ts
s
u
b
s
ta
n
tial
b
en
e
f
it
s
s
u
c
h
as
in
cr
ea
s
ed
ef
f
icien
c
y
,
e
n
h
a
n
ce
d
d
o
cu
m
e
n
t
a
u
th
e
n
tici
t
y
,
a
n
d
en
h
a
n
ce
d
s
ec
u
r
it
y
i
n
ad
m
i
n
i
s
tr
ati
v
e
p
r
o
ce
s
s
es
[
1
3
]
–
[
2
0
]
.
T
h
ese
f
i
n
d
in
g
s
il
lu
s
tr
ate
h
o
w
b
lo
ck
ch
ai
n
ca
n
ad
d
r
ess
i
n
e
f
f
ic
ien
cies
a
n
d
v
u
l
n
er
ab
ilit
ies
th
a
t
h
av
e
tr
ad
itio
n
all
y
p
lag
u
ed
g
o
v
er
n
m
en
t
s
y
s
te
m
s
.
R
eg
ar
d
in
g
R
Q3
,
it
ex
p
lo
r
es
h
o
w
b
lo
ck
ch
a
in
m
an
a
g
e
m
en
t,
v
er
if
icatio
n
,
an
d
au
th
e
n
tica
tio
n
ap
p
licatio
n
s
a
r
e
em
p
lo
y
ed
in
e
-
g
o
v
er
n
m
e
n
t
s
ec
u
r
it
y
.
St
u
d
ies
in
d
icate
th
at
b
lo
ck
ch
ai
n
d
ec
en
tr
aliza
tio
n
an
d
cr
y
p
to
g
r
ap
h
y
o
f
f
er
a
r
o
b
u
s
t
f
r
a
m
e
w
o
r
k
f
o
r
im
p
r
o
v
i
n
g
s
ec
u
r
it
y
,
alt
h
o
u
g
h
t
h
e
n
ee
d
to
ad
d
r
ess
in
t
er
o
p
er
ab
ilit
y
c
h
alle
n
g
e
s
an
d
s
p
ec
i
f
ic
v
u
l
n
er
ab
ilit
ies
is
ac
k
n
o
w
led
g
ed
[
2
1
]
–
[
2
5
]
.
R
eg
ar
d
in
g
R
Q4
,
w
h
ic
h
ad
d
r
ess
es
th
e
lev
e
l
o
f
r
eliab
ilit
y
an
d
s
ec
u
r
it
y
o
f
b
lo
ck
ch
ai
n
i
m
p
le
m
e
n
tatio
n
s
,
it
is
h
ig
h
li
g
h
ted
t
h
at,
i
n
g
en
er
al,
t
h
ese
i
m
p
le
m
e
n
tatio
n
s
o
f
f
er
a
s
i
g
n
i
f
ican
t
lev
e
l
o
f
r
eliab
ilit
y
,
b
u
t
t
h
er
e
ar
e
ch
alle
n
g
e
s
s
u
c
h
as
a
lack
o
f
s
tan
d
ar
d
izatio
n
a
n
d
p
r
iv
ac
y
is
s
u
e
s
.
Fin
a
ll
y
,
R
Q5
f
o
cu
s
e
s
o
n
th
e
i
m
p
ac
t
o
f
b
lo
ck
c
h
ai
n
i
m
p
le
m
e
n
tat
io
n
o
n
th
e
ef
f
icie
n
c
y
a
n
d
s
ec
u
r
it
y
o
f
d
o
cu
m
e
n
t
m
an
a
g
e
m
e
n
t
in
g
o
v
er
n
m
en
t
ad
m
in
is
tr
ati
v
e
p
r
o
ce
s
s
es.
T
h
e
r
esu
lt
s
s
u
g
g
e
s
t
a
p
o
s
iti
v
e
i
m
p
ac
t
i
n
t
er
m
s
o
f
a
u
to
m
a
tio
n
,
tr
an
s
p
ar
en
c
y
,
a
n
d
i
m
p
r
o
v
ed
d
ata
in
te
g
r
it
y
[
5
]
,
[
2
6
]
–
[
3
5
]
,
[
3
6
]
–
[
4
4
]
,
[
4
5
]
–
[
5
4
]
,
[
5
5
]
.
Fu
r
th
er
m
o
r
e,
th
e
i
m
p
o
r
ta
n
ce
o
f
f
u
tu
r
e
r
esear
ch
to
ass
e
s
s
e
f
f
ec
tiv
e
n
ess
i
n
s
p
ec
i
f
i
c
co
n
tex
t
s
a
n
d
d
ev
elo
p
s
ta
n
d
ar
d
s
to
i
m
p
r
o
v
e
th
e
r
eliab
ilit
y
o
f
i
m
p
le
m
en
tatio
n
s
is
h
i
g
h
li
g
h
t
ed
.
T
h
is
d
is
cu
s
s
i
on
r
ef
lects
t
h
e
co
m
p
lex
it
y
an
d
d
iv
er
s
it
y
o
f
b
lo
ck
ch
ai
n
i
m
p
l
e
m
en
tatio
n
i
n
e
-
g
o
v
er
n
m
e
n
t,
p
r
o
v
id
in
g
a
s
o
lid
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
15
,
No
.
4
,
A
u
g
u
s
t
20
25
:
3
9
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-
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3990
f
o
u
n
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atio
n
f
o
r
f
u
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r
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r
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d
d
ev
elo
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m
en
t
in
th
is
e
v
er
-
ev
o
l
v
i
n
g
f
ield
.
T
h
e
d
is
cu
s
s
io
n
ca
n
b
e
co
n
d
u
cted
in
s
e
v
er
al
s
u
b
s
ec
tio
n
s
.
3
.
1
.
Wha
t
a
re
t
he
k
ey
w
o
rds
a
pp
lied in t
he
do
cu
m
ent
a
ry
pro
ce
s
s
f
o
r
elec
t
ro
nic g
o
v
er
n
m
ent
?
Fig
u
r
e
3
illu
s
tr
ates
a
n
et
w
o
r
k
o
f
in
ter
co
n
n
ec
ted
n
o
d
es
r
ep
r
esen
ti
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g
th
e
v
ar
io
u
s
k
e
y
w
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r
d
s
r
elate
d
to
d
o
cu
m
en
t
m
a
n
a
g
e
m
e
n
t
i
n
t
h
e
co
n
te
x
t
o
f
e
-
g
o
v
er
n
m
en
t.
T
h
e
n
o
d
es
ar
e
lin
k
ed
b
y
lin
es
s
h
o
w
i
n
g
th
e
r
elatio
n
s
h
ip
s
b
et
w
ee
n
th
e
s
e
ter
m
s
,
o
f
f
er
in
g
in
s
ig
h
t
i
n
to
h
o
w
t
h
e
v
ar
io
u
s
co
n
ce
p
ts
ar
e
co
n
n
ec
ted
.
T
h
is
v
is
u
aliza
t
io
n
h
i
g
h
li
g
h
t
s
th
e
m
o
s
t
co
m
m
o
n
l
y
u
s
ed
te
r
m
s
in
r
esear
c
h
,
s
u
c
h
as
“
b
lo
ck
ch
a
in
”
an
d
“e
-
g
o
v
er
n
m
e
n
t,”
h
i
g
h
li
g
h
t
in
g
th
eir
ce
n
tr
al
r
o
le
in
t
h
e
f
ield
.
Fig
u
r
e
3
.
Ke
y
w
o
r
d
s
ap
p
lied
in
th
e
d
o
cu
m
e
n
tar
y
p
r
o
ce
s
s
f
o
r
elec
tr
o
n
ic
g
o
v
er
n
m
en
t
3
.
2
.
Wha
t
a
re
t
he
t
o
o
ls
f
o
r
d
ig
it
a
l g
o
v
er
na
nce?
T
o
an
s
w
er
t
h
is
q
u
e
s
tio
n
,
an
an
al
y
s
is
o
f
th
e
tec
h
n
o
lo
g
ie
s
ap
p
lied
to
v
ar
io
u
s
asp
ec
ts
o
f
d
ig
ital
g
o
v
er
n
m
e
n
t
to
o
ls
w
as
ca
r
r
ied
o
u
t.
A
cc
o
r
d
in
g
to
T
a
b
le
5
,
b
lo
ck
ch
ai
n
an
d
e
-
g
o
v
er
n
a
n
ce
ar
e
th
e
m
o
s
t
d
is
cu
s
s
ed
to
p
ics
in
th
e
s
tu
d
ies,
ap
p
ea
r
in
g
i
n
m
o
s
t
o
f
th
e
ar
ticles
r
ev
ie
w
ed
.
T
h
is
allo
w
ed
u
s
to
id
en
ti
f
y
t
h
e
cu
s
to
m
er
g
r
o
u
p
s
o
r
co
m
m
u
n
ities
m
o
s
t i
n
v
o
l
v
ed
in
t
h
ese
d
is
c
u
s
s
io
n
s
.
T
ab
le
6
s
h
o
w
s
th
e
s
p
ec
if
ic
d
o
cu
m
en
ted
ap
p
licatio
n
s
o
f
b
lo
ck
ch
ain
in
elec
tr
o
n
ic
g
o
v
er
n
m
en
t
m
an
a
g
e
m
e
n
t.
T
h
ese
ap
p
licatio
n
s
in
cl
u
d
e
ar
ea
s
s
u
c
h
as
d
ig
ital
id
en
tit
y
v
er
if
icatio
n
,
s
ec
u
r
e
v
o
tin
g
s
y
s
te
m
s
,
tr
an
s
p
ar
en
t
p
r
o
cu
r
e
m
e
n
t,
an
d
i
m
m
u
tab
le
r
ec
o
r
d
k
ee
p
in
g
.
B
y
i
m
p
le
m
en
t
in
g
b
lo
ck
ch
ai
n
in
th
ese
d
o
m
ai
n
s
,
g
o
v
er
n
m
e
n
ts
ai
m
to
i
m
p
r
o
v
e
ef
f
icien
c
y
,
r
ed
u
ce
co
r
r
u
p
tio
n
,
an
d
en
h
an
ce
p
u
b
lic
tr
u
s
t
in
d
ig
ital
g
o
v
er
n
an
ce
s
y
s
te
m
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2088
-
8708
B
lo
ck
ch
a
in
a
s
a
d
ig
ita
l g
o
ve
r
n
a
n
ce
to
o
l:
a
s
ystema
tic
r
ev
iew
(
C
esa
r
P
a
tr
ic
io
-
P
era
lta
)
3991
T
ab
le
5
.
to
o
ls
f
o
r
d
ig
ital g
o
v
er
n
an
ce
D
e
t
e
c
t
i
o
n
t
e
c
h
n
i
q
u
e
s
R
e
f
e
r
e
n
c
e
Q
s (%)
B
l
o
c
k
c
h
a
i
n
[
3
]
–
[
1
2
]
,
[
1
3
]
–
[2
2]
,
[
2
3
]
–
[
3
2
]
,
[
3
5
]
,
[
3
8
]
,
[
3
9
]
,
[
4
4
]
,
[
4
5
]
33
D
e
c
e
n
t
r
a
l
i
z
e
d
[
6
]
–
[
9
]
,
[
2
4
]
,
[
2
9
]
10
D
i
st
r
i
b
u
t
e
d
[
2
3
]
,
[
2
4
]
,
[
2
8
]
7
E
-
g
o
v
e
r
n
me
n
t
[
5
]
,
[
8
]
–
[
1
7
]
14
G
o
v
e
r
n
me
n
t
[
5
]
–
[
7
]
3
I
n
f
o
r
mat
i
o
n
[
8
]
–
[
1
1
]
8
M
a
n
a
g
e
me
n
t
[
3
]
–
[
5
]
,
[
9
]
12
N
e
t
w
o
r
k
s
[
1
0
]
1
P
e
e
r
t
o
p
e
e
r
[
1
1
]
,
[
1
3
]
–
[
1
5
]
14
P
l
a
t
f
o
r
m
[
1
2
]
,
[
2
4
]
–
[
2
6
]
,
[
4
1
]
11
P
r
i
v
a
c
y
[
1
3
]
,
[
2
4
]
,
[
2
5
]
14
P
u
b
l
i
c
[
9
]
,
[
1
0
]
,
[
1
4
]
3
S
e
c
u
r
i
t
y
[
1
0
]
,
[
1
1
]
,
[
1
5
]
,
[
3
6
]
,
[
4
8
]
–
[
5
1
]
19
S
y
st
e
m
[
9
]
,
[
1
0
]
,
[
3
3
]
,
[
3
4
]
,
[
3
7
]
,
[
4
2
]
,
[
4
7
]
13
T
e
c
h
n
o
l
o
g
y
[
1
7
]
,
[
2
4
]
,
[
3
2
]
,
[
4
3
]
8
T
ab
le
6
.
Do
cu
m
e
n
ted
s
p
ec
i
f
ic
ap
p
licatio
n
s
o
f
b
lo
ck
c
h
ain
N°
A
p
p
l
i
c
a
t
i
o
n
S
p
e
c
i
f
i
c
sco
p
e
1
S
EC
H
a
s
h
-
I
n
b
o
u
n
d
i
n
v
o
i
c
e
ma
n
a
g
e
me
n
t
M
a
n
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4.
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p
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DATA AV
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RE
F
E
R
E
NC
E
S
[
1
]
J.
R
.
B
a
u
t
i
st
a
e
t
a
l
.
,
“
M
e
d
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:
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,
”
F
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B
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,
v
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.
6
,
p
.
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2
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1
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.
[
2
]
F
.
A
z
z
a
m
e
t
a
l
.
,
“
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