I
nte
rna
t
io
na
l J
o
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l o
f
Adv
a
nces in Applie
d Science
s
(
I
J
AAS)
Vo
l.
6
,
No
.
3
,
Sep
tem
b
er
2017
,
p
p
.
2
3
0
~
2
3
4
I
SS
N:
2252
-
8814
230
J
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l ho
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:
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ttp
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h
I
S
p
o
s
s
ess
io
n
s
ar
e
n
o
t
ca
p
ab
le
ag
ain
s
t
p
er
ils
)
to
ev
ad
e
s
ec
u
r
it
y
cr
u
s
h
es
a
n
d
s
ec
u
r
e
t
h
eir
ad
v
an
ta
g
es
f
r
o
m
d
is
tin
ct
iv
e
d
an
g
er
o
u
t
lin
e
s
.
R
eg
ar
d
less
o
f
,
s
u
c
h
u
s
e
d
o
es
n
o
t
f
o
r
t
h
e
m
o
s
t
p
ar
t
to
tall
y
e
n
s
u
r
e
a
g
ai
n
s
t
d
an
g
er
s
as
a
r
es
u
lt
o
f
r
eg
u
lar
co
n
tr
o
l
d
o
w
n
s
id
es.
S
u
b
s
eq
u
en
t
l
y
,
o
p
p
o
r
tu
n
it
y
a
s
s
e
s
s
m
e
n
t
a
n
d
d
im
i
n
i
s
h
m
en
t
ar
e
t
h
e
ess
e
n
tial
m
o
v
es
to
b
e
m
ad
e
t
o
w
ar
d
s
I
n
f
o
s
ec
u
r
it
y
h
az
ar
d
c
o
n
tr
o
l
(
I
SR
M)
.
R
ig
h
t
n
o
w
,
m
o
s
t
r
esear
ch
er
s
ar
e
d
ea
lin
g
w
it
h
d
an
g
er
ass
e
s
s
m
e
n
t
y
et
f
r
eq
u
en
t
l
y
lack
o
f
co
n
c
er
n
th
e
d
a
n
g
er
d
i
m
i
n
is
h
i
n
g
p
o
in
t
o
f
v
ie
w
.
As
a
n
ef
f
ec
t
o
f
d
an
g
er
ass
e
s
s
m
e
n
t
alo
n
e,
I
S
h
az
ar
d
j
u
s
t
g
ets
an
al
y
ze
d
h
o
w
ev
er
n
o
t
d
i
m
i
n
i
s
h
ed
o
r
d
im
i
n
is
h
ed
s
in
c
e
d
an
g
er
d
i
m
i
n
i
s
h
m
e
n
t
is
r
ea
ll
y
tr
o
u
b
leso
m
e
an
d
lo
ad
ed
w
it
h
u
n
ce
r
tai
n
t
y
.
T
h
e
is
s
u
e
o
f
w
ee
k
n
e
s
s
e
s
p
r
esen
t
i
n
th
e
d
an
g
er
d
i
m
i
n
is
h
i
n
g
s
y
s
te
m
is
o
n
e
o
f
t
h
e
cr
u
cial
s
eg
m
en
ts
t
h
at
ef
f
ec
t
I
S
R
M
s
u
f
f
ic
i
en
c
y
.
T
h
u
s
l
y
,
it
i
s
cr
itical
to
m
an
a
g
e
t
h
e
w
ee
k
n
e
s
s
es
i
s
s
u
e
i
n
th
e
I
n
f
o
s
ec
u
r
it
y
h
az
ar
d
d
i
m
in
is
h
m
en
t
s
tr
ateg
y
.
T
o
d
o
in
th
is
w
a
y
,
w
e
p
r
o
p
o
s
e
an
I
n
f
o
s
ec
u
r
it
y
h
az
ar
d
d
im
in
i
s
h
s
t
y
le
ce
n
ter
ed
ar
o
u
n
d
a
Go
t
R
eq
u
ir
e
m
e
n
t
s
(
GA
)
.
Acc
o
r
d
in
g
to
th
e
ess
e
n
tial
r
es
u
lt
s
,
o
u
r
s
u
g
g
e
s
ted
s
t
y
le
ca
n
f
e
asib
l
y
d
i
m
in
i
s
h
t
h
e
d
an
g
er
r
ea
s
o
n
ed
f
r
o
m
u
n
v
er
i
f
iab
le
cir
cu
m
s
ta
n
ce
s
.
2.
B
ACK
G
RO
UND
WO
RK
T
h
e
ar
r
an
g
e
m
e
n
t
o
f
en
h
a
n
ce
m
en
ts
t
h
at
w
e
s
u
g
g
es
t
as
"
Secu
r
it
y
E
n
h
a
n
ci
n
g
T
ec
h
n
o
lo
g
ies"
(
SE
T
)
cr
ea
ted
o
u
t
o
f
cr
y
p
to
g
r
ap
h
y
an
d
m
ac
h
in
e
s
ec
u
r
it
y
a
s
s
e
s
s
,
an
d
ar
e
h
en
ce
o
r
g
an
ized
af
t
er
s
ec
u
r
it
y
m
ak
i
n
g
p
ar
ticu
lar
s
,
f
o
r
in
s
ta
n
ce
,
h
az
a
r
d
s
h
o
w
i
n
g
an
d
s
ec
u
r
it
y
ap
p
r
aisal.
R
ec
o
g
n
ized
s
ec
u
r
it
y
i
m
p
r
o
v
e
m
e
n
t
s
w
er
e
d
esig
n
ed
f
o
r
n
atio
n
al
s
ec
u
r
it
y
r
ea
s
o
n
s
,
an
d
later
,
f
o
r
ac
q
u
i
r
in
g
co
m
p
a
n
y
d
ata
an
d
tr
an
s
ac
tio
n
s
.
T
h
e
y
w
er
e
d
ev
elo
p
ed
to
s
ec
u
r
ed
s
tate
an
d
co
m
p
an
y
e
n
d
o
w
ed
co
n
ce
p
ts
,
an
d
to
s
ec
u
r
e
r
eq
u
es
ted
f
ea
t
u
r
es
f
r
o
m
d
is
r
u
p
tio
n
s
.
Fig
u
r
e
2
.
R
an
d
o
m
Ke
y
Ge
n
er
atio
n
f
o
r
A
u
t
h
e
n
ticatio
n
an
d
Min
i
m
al
R
eq
u
ir
e
m
en
t
s
Sp
ec
i
f
icatio
n
T
h
e
p
r
o
tectio
n
p
r
o
b
lem
s
m
a
n
ag
ed
to
b
y
C
r
ea
tu
r
es
ar
e
f
r
o
m
s
ev
er
al
v
ie
w
s
a
r
ef
o
r
m
u
lat
io
n
o
f
o
ld
p
r
o
tectio
n
th
r
ea
ts
,
f
o
r
ex
a
m
p
l
e,
co
n
v
en
ien
ce
j
o
lts
o
r
f
o
r
es
w
ea
r
i
n
g
o
f
co
n
tr
o
l
s
tr
i
k
es.
T
h
is
ti
m
e
o
n
t
h
e
o
th
er
h
an
d
,
co
n
v
e
n
tio
n
al
p
eo
p
le
ar
e
th
e
s
tr
u
ctu
r
ed
cl
ien
t
s
o
f
t
h
e
i
m
p
r
o
v
e
m
e
n
ts
,
a
n
d
s
u
r
v
eill
an
t
ar
r
a
y
s
ar
e
th
e
h
ar
m
f
u
l
co
m
p
o
n
en
ts
f
r
o
m
w
h
ich
t
h
e
y
r
eq
u
ir
e
p
r
o
tectio
n
.
O
b
v
io
u
s
l
y
,
th
e
b
est
cl
ien
t
an
d
u
s
e
o
f
C
r
ea
t
u
r
es
i
s
th
e
"
ex
tr
e
m
i
s
t"
lo
ad
ed
w
it
h
g
o
v
er
n
m
en
t
d
is
tin
c
tio
n
.
T
h
e
o
b
j
ec
tiv
e
o
f
C
r
ea
tu
r
es
i
n
th
e
c
o
n
n
ec
tio
n
o
f
On
lin
e
So
cial
Net
w
o
r
k
s
is
to
m
o
tiv
at
e
p
eo
p
le
to
am
u
s
e
w
it
h
o
th
er
s
,
p
r
o
v
id
e,
g
et
to
an
d
d
is
tr
ib
u
te
d
etails
o
n
th
e
w
eb
,
f
r
ee
f
r
o
m
d
ec
lar
atio
n
a
n
d
o
b
s
tacle
.
P
r
o
b
a
b
ly
,
j
u
s
t
d
etails
t
h
at
a
clien
t
p
ar
ticu
lar
l
y
i
m
p
ar
t
s
is
av
a
ilab
le
to
h
er
s
tr
u
ct
u
r
ed
in
d
i
v
id
u
al
s
,
w
h
ile
t
h
e
d
iv
u
l
g
en
ce
o
f
a
n
o
th
er
d
eta
ils
to
an
o
t
h
er
ac
ti
v
itie
s
is
p
r
e
v
en
ted
.
Mo
r
eo
v
er
,
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8814
IJ
AA
S
Vo
l
.
6
,
No
.
3
,
Sep
tem
b
er
201
7:
2
30
–
2
34
232
C
r
ea
tu
r
es
p
lan
to
i
m
p
r
o
v
e
t
h
e
ca
p
ab
ilit
y
o
f
a
clie
n
t
to
d
i
s
tr
ib
u
te
a
n
d
ac
ce
s
s
ib
ilit
y
d
etai
ls
o
n
O
n
li
n
e
So
cial
Net
w
o
r
k
s
b
y
o
f
f
er
i
n
g
h
er
p
r
o
g
r
a
m
s
to
p
r
ev
en
t
co
n
tr
o
l.
A
s
f
o
r
d
ec
lar
atio
n
,
th
e
r
ev
ie
w
o
f
C
r
ea
t
u
r
es
b
eg
i
n
s
f
r
o
m
t
h
e
p
r
e
f
ac
e
t
h
at
p
o
s
s
ib
l
y
ill
-
d
is
p
o
s
ed
co
m
p
o
n
e
n
ts
w
o
r
k
o
r
d
is
p
la
y
O
n
li
n
e
So
cial
Ne
t
w
o
r
k
s
.
T
h
ese
h
a
v
e
an
in
ter
e
s
t
to
w
ar
d
g
ett
in
g
k
ee
p
o
f
h
o
w
e
v
er
m
u
ch
clie
n
t
d
et
ails
as
co
u
ld
b
e
ex
p
ec
ted
,
s
u
c
h
as
clien
t
d
esig
n
ed
m
ater
ial
(
e.
g
.
,
m
at
er
ial,
p
ict
u
r
es,
p
er
s
o
n
al
m
e
s
s
a
g
es)
a
n
d
also
co
o
p
er
atio
n
an
d
ac
ti
o
n
s
d
etails
(
e.
g
.
,
d
escr
ip
tio
n
o
f
as
s
o
ciate
s
,
w
eb
s
ites
a
n
al
y
ze
d
,
'
l
ik
e
s
'
)
.
On
ce
a
n
ill
-
d
is
p
o
s
ed
asp
ec
t
h
as
ac
q
u
i
r
ed
clien
t
d
etails,
it
m
a
y
ap
p
l
y
i
t a
s
a
p
ar
t o
f
s
u
r
p
r
i
s
in
g
w
a
y
s
–
an
d
ev
e
n
to
th
e
h
i
n
d
r
an
ce
o
f
t
h
e
p
eo
p
le
co
n
n
ec
t
ed
w
it
h
th
e
f
ac
ts
.
I
n
H
C
I
an
a
l
y
s
is
it
is
e
x
p
ec
te
d
th
at
p
ar
tic
u
lar
r
es
u
lt
s
t
h
at
ass
es
s
p
r
o
tectio
n
w
it
h
d
ef
e
n
d
in
g
ar
e
s
o
u
n
b
e
n
d
in
g
i
t
w
o
u
ld
b
e
d
i
f
f
ic
u
lt
s
u
p
p
o
r
t
th
e
cl
ien
t
s
'
tech
n
i
q
u
es.
I
n
f
o
r
m
atio
n
d
ef
e
n
d
in
g
d
o
es
n
o
t
s
o
m
u
c
h
s
u
g
g
e
s
t
p
r
o
tectio
n
,
a
n
d
v
i
s
ib
i
lit
y
i
s
n
o
t
u
n
a
v
o
id
ab
l
y
co
n
n
ec
ted
w
it
h
(
u
n
d
es
ir
ab
le)
av
ai
lab
ilit
y
.
E
v
er
y
d
a
y
tech
n
iq
u
es,
f
o
r
ex
a
m
p
le,
m
a
k
in
g
u
n
eq
u
iv
o
ca
l
t
h
at
y
o
u
w
o
u
ld
ch
o
o
s
e
n
o
t
to
b
e
co
n
ce
r
n
ed
,
r
ev
ie
w
t
h
at
a
d
iv
u
l
g
e
n
ce
m
ig
h
t
b
e
u
s
ed
to
ar
r
an
g
e
p
r
o
tectio
n
li
m
itatio
n
s
.
Fu
r
th
er
,
a
n
al
y
s
is
d
e
m
o
n
s
tr
at
e
th
at
clie
n
ts
m
a
k
e
th
eir
o
w
n
tec
h
n
iq
u
es
to
k
ee
p
u
p
t
h
eir
p
r
o
tectio
n
a
n
d
co
p
e
w
it
h
t
h
eir
c
h
ar
ac
ter
w
h
ile
en
j
o
y
i
n
g
ta
k
i
n
g
a
n
in
ter
est
i
n
O
n
li
n
e
So
cial
Net
wo
r
k
s
.
Ver
y
g
o
o
d
ex
a
m
p
le,
a
f
e
w
clie
n
t
s
m
a
k
e
v
ar
io
u
s
d
etai
ls
at
a
g
i
v
en
co
n
tr
o
l.
T
h
ese
m
a
y
b
e
p
s
eu
d
o
n
y
m
o
u
s
,
g
lo
o
m
y
o
r
o
b
v
io
u
s
d
etail
s
.
W
h
ile
th
e
s
e
"
clo
u
d
ed
"
d
etails
m
a
y
n
o
t
p
r
o
tect
th
e
clien
t
s
'
d
etails e
f
f
ec
t
iv
el
y
,
clie
n
ts
f
i
n
d
th
at
t
h
e
p
r
o
tectio
n
s
t
h
e
y
p
r
o
v
id
e
ar
e
s
u
f
f
icie
n
t
f
o
r
th
eir
ev
er
y
d
a
y
n
ee
d
.
3.
P
RO
P
O
SE
D
AP
P
RO
ACH
E
v
alu
a
tin
g
t
h
e
r
elati
v
e
r
i
s
k
f
o
r
ev
er
y
p
o
w
er
le
s
s
n
es
s
is
p
r
o
f
es
s
io
n
al
b
y
m
ea
n
s
o
f
a
s
tr
at
eg
y
ca
lled
r
is
k
e
v
al
u
atio
n
.
T
h
r
ea
t
e
v
al
u
atio
n
allo
ca
tes
a
r
i
s
k
p
o
s
it
io
n
o
r
p
o
s
itio
n
to
e
v
er
y
p
ar
ticu
lar
w
ea
k
n
ess
’
s
.
P
o
s
itio
n
in
g
r
o
u
s
e
s
o
n
e
to
d
ec
i
d
e
th
e
r
elativ
e
d
a
n
g
er
a
s
s
o
ciat
ed
w
it
h
ea
c
h
n
o
t
ca
p
ab
le
in
f
o
r
m
atio
n
o
w
n
er
s
h
ip
.
T
h
e
d
an
g
er
co
m
p
o
n
e
n
ts
f
u
s
e
r
eso
u
r
ce
s
,
d
an
g
er
s
,
p
o
w
er
le
s
s
f
o
cu
s
es
a
n
d
w
ea
k
n
e
s
s
e
s
.
P
r
o
p
er
ty
s
i
g
n
i
f
ica
n
tl
y
co
n
s
o
lid
ate
t
h
e,
r
e
g
u
lar
m
e
s
s
a
g
e,
i
n
n
o
v
atio
n
a
n
d
s
tr
u
ct
u
r
e
o
f
a
s
y
s
te
m
.
Dan
g
er
s
ar
e
t
h
i
n
g
s
th
at
ca
n
h
ap
p
en
o
r
th
at
ca
n
"
s
tr
ik
e"
th
e
s
tr
u
c
tu
r
e.
Sh
o
r
tco
m
i
n
g
s
m
a
k
e
a
s
y
s
t
e
m
m
o
r
e
ar
r
an
g
ed
to
b
e
s
tr
u
ck
b
y
a
d
an
g
er
o
r
co
n
s
id
er
t
h
e
s
h
o
t
o
f
a
n
a
s
s
a
u
l
t
to
m
o
r
e
p
la
n
n
ed
h
a
v
e
a
co
u
p
le
ac
h
ie
v
e
m
en
t
o
r
i
m
p
ac
t.
S
h
o
r
tco
m
i
n
g
s
ar
e
a
n
ad
v
an
ta
g
e
'
s
co
m
p
o
n
e
n
t
s
th
at
m
ig
h
t
b
e
ab
u
s
ed
b
y
a
d
an
g
er
an
d
j
o
in
d
o
w
n
s
id
es.
I
t
is
m
is
t
a
k
en
to
k
n
o
w
ev
er
y
t
h
i
n
g
ab
o
u
t
e
v
er
y
s
i
n
g
le
f
ee
b
le
p
o
in
t.
I
n
t
h
i
s
w
a
y
,
a
n
al
ter
n
ate
t
h
at
d
ata
f
o
r
u
n
ce
r
tain
t
y
o
u
g
h
t
to
r
el
iab
l
y
b
e
ad
d
ed
t
o
th
e
d
an
g
er
as
s
es
s
m
e
n
t
s
y
s
te
m
,
w
h
ic
h
i
n
co
r
p
o
r
ates
an
as
s
es
s
m
e
n
t
m
ad
e
b
y
th
e
tr
o
u
g
h
u
s
in
g
a
w
e
s
o
m
e
j
u
d
g
m
en
t
an
d
ex
p
er
ien
ce
.
R
ea
ll
y
,
d
an
g
er
s
ar
e
ad
d
r
ess
ed
b
y
b
r
ea
k
i
n
g
d
o
w
n
t
h
e
p
o
ten
tial
o
u
tco
m
e
s
o
f
d
an
g
er
s
a
n
d
f
ee
b
le
f
o
cu
s
es
an
d
b
y
co
n
s
id
er
in
g
t
h
e
p
la
n
n
ed
i
m
p
ac
t
o
f
a
n
e
g
ati
v
e
s
ec
u
r
it
y
ap
p
ea
r
an
d
,
f
o
r
ex
a
m
p
le,
w
ea
k
n
e
s
s
e
s
.
4.
G
E
NE
T
I
C
P
RO
G
RAM
M
I
N
G
AP
P
RO
ACH
C
G
A
co
u
n
ts
ar
e
in
q
u
ir
y
f
i
g
u
r
i
n
g
’
s
ce
n
ter
ed
o
n
th
e
s
tr
ateg
ie
s
f
o
r
r
u
n
o
f
th
e
m
ill
d
u
t
y
a
n
d
n
o
n
p
ar
tis
an
ac
q
u
ir
ed
ca
p
ac
ities
.
T
h
e
y
b
e
a
p
ar
t
o
f
to
g
et
h
er
ac
co
m
p
li
s
h
m
en
ts
o
f
f
it
test
a
m
o
n
g
ar
r
an
g
e
m
en
t
co
m
p
o
n
en
t
s
w
it
h
a
s
y
s
te
m
y
et
r
a
n
d
o
m
ize
d
d
ata
o
r
g
an
izatio
n
to
s
tr
u
ct
u
r
e
a
w
is
h
co
u
n
t
s
w
it
h
a
p
ar
t
o
f
th
e
n
o
te
w
o
r
th
y
o
u
tlin
e
o
f
i
n
d
iv
id
u
al
i
n
q
u
ir
y
.
I
n
ea
ch
p
er
io
d
;
an
o
th
er
ar
r
an
g
e
m
e
n
t
o
f
m
ad
e
cr
ea
tu
r
es
(
s
tr
in
g
)
is
p
r
o
d
u
ce
d
u
tili
zi
n
g
ele
m
e
n
ts
o
f
th
e
f
itte
s
t
o
f
t
h
e
o
ld
;
an
o
cc
asio
n
al
n
e
w
v
ie
w
p
o
in
t
is
m
ad
e
p
r
o
g
r
ess
to
w
ar
d
g
r
ea
t s
u
r
v
e
y
.
T
h
ey
e
f
f
ec
ti
v
el
y
d
i
s
r
eg
ar
d
af
f
ir
m
ed
d
ata
to
co
n
s
id
er
o
n
an
o
th
er
w
is
h
ce
n
ter
s
w
it
h
ex
p
ec
ted
u
p
g
r
ad
ed
p
r
o
f
icien
c
y
.
Her
ed
itar
y
co
m
p
u
tatio
n
s
h
a
v
e
b
ee
n
p
r
o
d
u
c
ed
b
y
J
o
h
an
Ho
llan
d
a
n
d
h
is
p
ar
t
n
er
s
at
t
h
e
Un
i
v
er
s
it
y
o
f
Mic
h
.
T
h
e
d
esti
n
atio
n
s
o
f
t
h
eir
f
i
n
d
in
g
h
av
e
b
ee
n
t
w
o
f
o
ld
:
a.
T
o
d
r
aw
i
n
o
u
t a
n
d
alto
g
eth
er
p
o
r
tr
ay
th
e
ad
ap
tab
le
s
tr
ateg
ie
s
f
o
r
h
i
g
h
lig
h
t
s
y
s
te
m
b.
T
o
p
r
o
ce
d
u
r
e
r
ec
r
ea
ted
s
tr
u
ct
u
r
es
d
ev
elo
p
m
en
t
th
a
t
k
ee
p
s
t
h
e
i
m
p
er
ati
v
e
d
ata
i
n
b
o
th
e
le
m
en
t
an
d
m
ad
e
s
y
s
te
m
s
m
ec
h
a
n
ical
in
n
o
v
at
io
n
.
th
e
G
A
h
as
a
f
e
w
v
ar
ietie
s
f
r
o
m
m
o
r
e
o
r
d
in
ar
y
u
p
g
r
ad
e
an
d
s
ea
r
ch
f
o
r
m
et
h
o
d
o
lo
g
y
i
n
: 1
-
Gas p
er
f
o
r
m
w
it
h
a
d
e
v
elo
p
m
e
n
t o
f
th
e
p
ar
a
m
eter
s
et,
n
o
t p
ar
a
m
eter
t
h
e
m
s
el
v
es.
T
h
e
Gas
r
eq
u
ir
e
th
e
ele
m
e
n
t
p
ar
am
eter
s
et
o
f
th
e
e
n
h
a
n
ci
n
g
is
s
u
e
to
b
e
d
is
tr
ib
u
ted
as
a
r
estricte
d
len
g
t
h
ar
r
an
g
e
m
en
t
o
v
e
r
s
o
m
e
co
n
s
tr
ain
ed
letter
s
s
et.
2
-
Gas
lo
o
k
f
r
o
m
a
te
n
an
ts
o
f
ce
n
ter
s
n
o
t
an
ch
o
r
m
an
.
3
-
Gas
u
s
e
r
es
u
lt
(
d
esti
n
atio
n
li
m
it)
d
ata,
n
o
t
b
ac
k
u
p
s
o
r
o
th
er
p
ar
tn
er
co
n
te
m
p
lati
n
g
.
4
-
Gas
u
s
e
p
r
o
b
a
b
ilis
tic
m
o
v
e
m
e
n
t
co
n
t
r
o
ls
n
o
t
d
eter
m
in
i
s
tic
p
r
o
p
o
s
als
.
An
ac
k
n
o
w
led
g
e
d
ac
q
u
i
r
ed
co
u
n
ts
is
p
r
o
d
u
ce
d
o
u
t o
f
th
r
ee
ex
ec
u
t
iv
es: R
ep
licatio
n
,
C
r
o
s
s
-
o
v
er
,
a
n
d
Mu
tatio
n
.
5.
E
XP
E
R
I
M
E
NT
A
L
E
VA
L
U
AT
I
O
N
T
h
e
d
an
g
er
id
en
t
if
iab
le
co
n
f
ir
m
a
tio
n
p
r
o
ce
s
s
b
eg
i
n
s
w
i
th
a
n
e
v
alu
a
tio
n
,
i
n
w
h
ic
h
s
tag
e
an
af
f
iliatio
n
'
s
p
o
in
t
s
o
f
i
n
ter
est
s
h
o
u
ld
b
e
m
aster
m
i
n
d
ed
an
d
ar
r
an
g
ed
m
o
r
eo
v
er
.
A
t
t
h
at
el
e
m
en
t,
th
e
p
o
in
ts
o
f
in
ter
est
s
h
o
u
ld
b
e
o
r
g
an
ized
as
d
e
m
o
n
s
tr
ated
b
y
t
h
eir
v
i
talit
y
.
I
n
ev
er
y
o
n
e
lev
el,
s
u
b
tle
el
e
m
en
ts
is
g
at
h
er
ed
f
r
o
m
o
r
g
a
n
izatio
n
s
t
h
r
o
u
g
h
talk
i
n
g
ab
o
u
t
w
it
h
s
p
ec
iali
s
ts
an
d
d
is
tr
ib
u
ted
s
t
u
d
ies.
Fo
r
ar
r
an
g
in
g
a
n
d
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233
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to
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il
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n
'
s
d
an
g
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ad
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i
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is
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f
r
a
m
e
w
o
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k
.
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u
ch
a
s
u
r
v
e
y
m
ig
h
t
m
a
k
e
o
v
er
s
ee
r
s
f
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r
t
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u
b
d
iv
id
e
t
h
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e
s
s
io
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s
to
m
a
k
e
n
e
w
c
lass
if
icati
o
n
s
t
h
at
b
etter
h
elp
t
h
e
d
a
n
g
er
ad
m
i
n
is
tr
atio
n
f
r
a
m
e
w
o
r
k
.
(
1
)
W
h
e
r
e
VA
m
ea
n
s
t
h
e
d
ata
r
eso
u
r
ce
estee
m
(
1
to
1
0
0
)
.
L
V
d
e
m
o
n
s
tr
ates
t
h
e
p
r
o
b
ab
ilit
y
o
f
s
h
o
r
tco
m
i
n
g
s
o
cc
u
r
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e
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ce
(
0
to
1
)
.
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m
b
o
lizes
t
h
e
r
ate
o
f
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is
k
les
s
en
ed
b
y
p
r
ese
n
t
o
v
er
s
ee
s
(
0
%
to
1
0
0
%)
an
d
allu
d
es
to
th
e
u
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ce
r
tai
n
t
y
o
f
p
r
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t
i
n
f
o
r
m
atio
n
o
f
s
h
o
r
tco
m
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n
g
s
i
s
(
0
%
to
1
0
0
%).
I
t
i
s
g
ath
er
ed
t
h
at
V
A
=
1
0
0
,
L
V
=
0
.
5
,
MC
=
0
.
5
an
d
UV
=
0
.
2
.
B
y
u
til
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g
G
A
,
we
n
ee
d
to
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ec
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e
r
ate
o
f
r
is
k
t
o
0
.
C
o
m
p
o
n
e
n
ts
o
f
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k
e
v
alu
a
tio
n
ar
e
u
t
ilized
a
s
w
ellb
ein
g
a
n
d
w
e
lln
e
s
s
w
o
r
k
v
ar
iab
les.
T
h
e
w
ellb
ein
g
an
d
w
e
lln
e
s
s
w
o
r
k
f
o
r
GA
i
s
:
(
2
)
C
o
n
n
ec
ted
w
it
h
e
v
er
y
i
n
d
iv
id
u
al
i
s
w
el
ln
e
s
s
estee
m
.
T
h
is
w
o
r
th
is
a
n
u
m
er
ical
ev
al
u
ati
o
n
o
f
h
o
w
g
r
ea
t o
f
an
s
w
er
f
o
r
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h
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6.
CO
NCLU
SI
O
N
P
ar
ticu
lar
f
o
cu
s
ed
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n
f
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w
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az
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f
r
a
m
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w
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r
k
(
P
E
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)
as
f
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ca
p
ab
ilit
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to
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a
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ag
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ac
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o
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le.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8814
IJ
AA
S
Vo
l
.
6
,
No
.
3
,
Sep
tem
b
er
201
7:
2
30
–
2
34
234
RE
F
E
R
E
NC
E
S
[
1
]
Bo
a
se
,
J.,
&
W
e
ll
m
a
n
,
B.
(2
0
0
6
).
“
Per
so
n
a
l
Rela
t
io
n
sh
ip
s:
On
a
n
d
Off
t
h
e
In
ter
n
e
t
”
,
[2
]
M
c
L
u
h
a
n
,
M
.
(1
9
6
4
),
“
Un
d
e
rsta
n
d
in
g
M
e
d
ia:
T
h
e
Ex
te
n
sio
n
s
o
f
M
a
n
.
Ca
m
b
rid
g
e
:
M
IT
P
re
ss
.
O'
Re
il
l
y
”
(O'
Re
il
l
y
,
2
0
0
5
)
[3
]
A
d
a
m
ic,
L
.
A
.
,
&
A
d
a
r,
E.
(2
0
0
3
).
Frien
d
s
a
n
d
Ne
i
g
h
b
o
rs
o
n
t
h
e
W
e
b
.
S
o
c
i
a
l
Ne
two
rk
s
.
[3
]
Ro
n
a
l
d
,
”
Priva
c
y
-
En
h
a
n
c
in
g
T
e
c
h
n
o
l
o
g
ies
W
h
it
e
Pa
p
e
r
fo
r
D
e
c
isio
n
-
Ma
k
e
rs
”
,
Ko
o
rn
RE
(e
d
it
o
r),
Drs
.
He
rm
a
n
v
a
n
G
il
s RE
R
A
Drs
.
Jo
ris
ter Ha
rt,
D
r.
Ir
.
P
a
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l
Ov
e
rb
e
e
k
,
Drs
.
Ra
ú
l
T
e
ll
e
g
e
n
[4
]
A
n
n
e
A
le
x
a
n
d
e
r
“
T
h
e
Eg
y
p
ti
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n
Exp
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rie
n
c
e
:
S
e
n
se
a
n
d
No
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se
n
se
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f
th
e
I
n
ter
n
e
t
Rev
o
l
u
ti
o
n
,
D
e
ta
il
s
o
f
t
h
e
In
ter
n
e
t
sh
u
td
o
wn
a
n
d
re
sto
r
a
ti
o
n
c
a
n
b
e
fo
u
n
d
o
n
th
e
Re
n
e
sy
s
”
,
b
lo
g
,
J.
C
o
w
ie,
(Ja
n
u
a
r
y
2
7
,
2
0
1
1
;
F
e
b
r
u
a
ry
2
,
2
0
1
1
).
[5
]
M
o
h
a
m
e
d
S
h
e
h
a
b
A
,
A
n
n
a
S
q
u
icc
iarin
i
B,
G
a
il
-
Jo
o
n
A
h
n
C,
a
n
d
Iri
n
i
K
o
k
k
in
o
u
“
Acc
e
ss
Co
n
t
ro
l
fo
r
On
li
n
e
S
o
c
ia
l
Ne
two
rk
s
T
h
ird
Pa
rty
Ap
p
li
c
a
ti
o
n
s
”
,
A
v
a
il
a
b
le
On
li
n
e
A
t
w
w
w
.
S
c
ien
c
e
d
irec
t.
Co
m
Jo
u
rn
a
l
Ho
m
e
p
a
g
e
:
w
ww
.
El
se
v
ier.Co
m
/L
o
c
a
te/Co
se
Co
m
p
u
ters
&
S
E
C
U
Rit
y
3
1
(2
0
1
2)
8
9
7
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9
1
1
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6
7
-
4
0
4
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/$
E
S
e
e
F
ro
n
t
M
a
tt
e
r
ª
2
0
1
2
El
se
v
ier L
td
.
A
ll
Rig
h
ts
Re
se
rv
e
d
.
h
tt
p
:/
/Dx
.
Do
i.
Org
/1
0
.
1
0
1
6
/J.
C
o
se
.
2
0
1
2
.
0
7
.
0
0
8
.
[6
]
He
a
th
e
r
Rich
t
e
r
L
ip
f
o
rd
,
Ka
t
h
e
rin
e
F
r
o
il
a
n
d
“
V
is
u
a
l
v
s.
Co
m
p
a
c
t:
A
Co
m
p
a
riso
n
o
f
P
riv
a
c
y
P
o
li
c
y
In
terf
a
c
e
s”
,
in
CHI 2
0
1
0
:
I
n
p
u
t,
S
e
c
u
rity,
a
n
d
P
riv
a
c
y
Po
li
c
ies
Ap
ril
1
0
–
15
,
2
0
1
0
,
A
tl
a
n
ta,
GA
,
US
A
.
[7
]
M
in
g
-
Ch
a
n
g
L
e
e
“
In
f
o
r
m
a
ti
o
n
S
e
c
u
rit
y
Risk
A
n
a
l
y
sis
M
e
th
o
d
s
a
n
d
Re
se
a
rc
h
T
re
n
d
s:
AH
P
a
n
d
F
u
z
z
y
Co
m
p
re
h
e
n
siv
e
”
.
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Co
m
p
u
ter
S
c
ien
c
e
&
In
fo
rm
a
ti
o
n
T
e
c
h
n
o
l
o
g
y
(
IJ
C
S
IT
)
Vo
l
6
,
No
1
,
F
e
b
ru
a
ry
2
0
1
4
.
[8
]
Na
n
F
e
n
g
,
X
u
e
Yu
“
A
Da
ta
-
d
riv
e
n
A
ss
e
ss
m
e
n
t
M
o
d
e
l
f
o
r
In
f
o
rm
a
ti
o
n
S
y
ste
m
s
S
e
c
u
rit
y
Ri
sk
M
a
n
a
g
e
m
e
n
t”,
in
J
o
u
r
n
a
l
o
f
Co
m
p
u
ter
s
,
V
o
l.
7
,
No
.
1
2
,
De
c
e
m
b
e
r
2
0
1
2
.
[9
]
h
t
tp
:/
/p
o
li
c
y
re
v
ie
w
.
in
f
o
/article
s/a
n
a
l
y
sis/n
e
c
e
s
sa
r
y
-
a
n
d
-
in
h
e
re
n
t
-
li
m
it
s
-
in
tern
e
t
-
su
rv
e
il
lan
c
e
.
[1
0
]
S
e
d
a
G
¨u
rse
s
a
n
d
Clau
d
ia
D
iaz
“
Tw
o
tale
s
o
f
p
riv
a
c
y
in
o
n
li
n
e
so
c
ial
n
e
tw
o
rk
s
”,
T
h
is
a
rti
c
le
a
p
p
e
a
rs
in
t
h
e
IEE
E
S
e
c
u
rity
&
Priva
c
y
1
1
(3
):2
9
-
3
7
,
M
a
y
/
Ju
n
e
2
0
1
3
.
T
h
is
is
t
h
e
a
u
th
o
rs’
v
e
rsio
n
o
f
th
e
p
a
p
e
r.
T
h
e
m
a
g
a
z
in
e
v
e
rsio
n
is
a
v
a
il
a
b
le at:
h
tt
p
:/
/ww
w
.
c
o
m
p
u
ter.o
rg
/cs
d
l/
m
a
g
s/sp
/2
0
1
3
/
0
3
/
m
sp
2
0
1
3
0
3
0
0
2
9
-
a
b
s.h
tm
l.
[1
1
]
F
.
Be
a
to
,
M
.
K
o
h
lw
e
iss,
a
n
d
K.
W
o
u
ters
“
S
c
ra
m
b
le
!
Yo
u
r
so
c
ial
n
e
tw
o
rk
d
a
ta.
”
Priva
c
y
En
h
a
n
c
in
g
T
e
c
h
n
o
l
o
g
ies
S
y
mp
o
si
u
m,
PE
T
S
2
0
1
1
,
v
o
lu
m
e
6
7
9
4
o
f
L
NCS,
p
a
g
e
s 2
1
1
–
2
2
5
.
S
p
rin
g
e
r,
2
0
1
1
.
[1
2
]
E.
De
Cristo
f
a
ro
,
C.
S
o
rien
te,
G
.
T
su
d
ik
,
a
n
d
A
.
W
il
li
a
m
s
“
Hu
m
m
in
g
b
ird
:
P
riv
a
c
y
a
t
th
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ti
m
e
o
f
t
w
it
ter.
”
IEE
E
S
y
mp
o
si
u
m o
n
S
e
c
u
rity
a
n
d
Priva
c
y
,
p
a
g
e
s 2
8
5
–
2
9
9
.
I
EE
E
C
o
m
p
u
ter S
o
c
iety
,
2
0
1
2
.
[1
4
]
Ru
la
S
a
y
a
f
a
n
d
Da
v
e
Clar
k
e
“
A
c
c
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tro
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m
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e
ls
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r
o
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so
c
ial
n
e
tw
o
rk
s.
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S
o
c
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l
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two
rk
En
g
in
e
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rin
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re
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e
b
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ta
a
n
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e
rv
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s
.
IG
I
-
G
lo
b
a
l,
(i
n
p
ri
n
t)
2
0
1
2
.
[1
5
]
F
re
d
S
t
u
tzm
a
n
a
n
d
W
o
o
d
ro
w
Ha
rtzo
g
“
Bo
u
n
d
a
ry
re
g
u
latio
n
in
so
c
ial
m
e
d
ia.
”
by
,
In
CS
CW
,
2
0
1
2
.
[1
6
]
A
li
re
z
a
Ta
m
ji
d
y
a
m
c
h
o
lo
a
n
d
Ra
wa
a
Da
w
o
u
d
A
l
-
D
a
b
b
a
g
h
“
G
e
n
e
ti
c
A
lg
o
rit
h
m
A
p
p
ro
a
c
h
f
o
r
Risk
Re
d
u
c
ti
o
n
o
f
In
f
o
rm
a
ti
o
n
S
e
c
u
rit
y
”,
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Cy
b
e
r
-
S
e
c
u
rity
a
n
d
Di
g
it
a
l
Fo
re
n
sic
s
(
IJ
CS
DF)
1
(1
):
5
9
-
6
6
t
h
e
S
o
c
iety
o
f
Dig
it
a
l
In
f
o
r
m
a
ti
o
n
a
n
d
W
irele
ss
Co
m
m
u
n
ica
ti
o
n
s,
2
0
1
2
(IS
S
N:
2
3
0
5
-
0
0
1
2
).
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