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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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4752
I
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J
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Vo
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9
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No
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1
,
J
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201
8
:
2
2
7
–
2
33
228
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ca
n
b
e
u
s
ed
.
T
h
e
r
ec
o
m
m
en
d
atio
n
s
y
s
te
m
is
u
s
ed
f
o
r
m
a
n
y
ap
p
licatio
n
s
s
u
c
h
as
s
o
cial
n
et
w
o
r
k
[
5
]
,
tr
an
s
ac
tio
n
s
(
s
ell
in
g
an
d
b
u
y
i
n
g
)
[
6
]
,
in
lig
h
t
o
f
b
i
g
d
ata
[
7
]
,
an
d
s
o
f
o
r
th
.
A
r
e
co
m
m
e
n
d
er
s
y
s
te
m
is
a
s
o
f
t
war
e
an
d
en
g
in
ee
r
i
n
g
p
r
o
v
id
e
s
u
g
g
esti
o
n
s
f
o
r
ite
m
s
to
b
e
u
s
ef
u
l
f
o
r
u
s
er
s
[
8
]
.
T
h
e
ad
v
ice
is
g
iv
e
n
ai
m
s
to
s
u
p
p
o
r
t
u
s
er
s
in
v
ar
io
u
s
d
ec
is
io
n
-
m
a
k
i
n
g
p
r
o
ce
s
s
es.
I
n
ad
d
itio
n
,
r
ec
o
m
m
en
d
er
s
y
s
t
e
m
s
ar
e
also
u
s
ed
to
cu
s
to
m
i
ze
th
e
en
v
ir
o
n
m
e
n
t
w
it
h
t
h
e
n
ee
d
s
o
f
th
e
s
ite
u
s
er
s
.
E
-
co
m
m
er
ce
r
ec
o
m
en
d
er
n
ee
d
s
to
p
r
o
ce
s
s
a
in
f
o
r
m
atio
n
i
n
w
eb
e
-
co
m
m
er
ce
an
d
ca
n
a
n
al
y
ze
t
h
e
u
s
er
o
n
th
e
b
asis
o
f
t
h
eir
h
is
t
o
r
ical
ass
ess
m
en
t
[
1
0
]
.
T
h
e
r
e
co
m
m
e
n
d
atio
n
b
ased
o
n
f
ea
t
u
r
es
to
th
e
u
s
er
an
d
p
er
s
o
n
a
l
p
r
o
f
ile
[
1
0
]
.
P
er
s
o
n
al
p
r
o
f
iles
ar
e
g
e
n
er
ated
au
t
o
m
a
ticall
y
t
h
r
o
u
g
h
f
ee
d
b
ac
k
f
r
o
m
u
s
er
s
[
1
1
]
.
I
n
s
tu
d
y
[
1
2
]
h
as
p
r
o
p
o
s
ed
r
e
co
m
m
e
n
d
in
g
t
h
e
p
r
o
d
u
ct
r
ec
o
m
m
e
n
d
atio
n
s
y
s
te
m
to
i
n
co
r
p
o
r
ate
cu
s
to
m
er
p
r
ef
er
en
ce
s
a
n
d
g
en
er
ate
a
lis
t
o
f
r
ec
o
m
m
e
n
d
ed
p
r
o
d
u
cts
f
o
r
s
p
ec
if
ic
cu
s
to
m
er
s
.
T
h
is
p
r
o
v
es
t
h
at
t
h
e
s
y
s
te
m
ca
n
b
e
u
s
ed
as
a
s
tr
ateg
y
f
o
r
s
ales
th
r
o
u
g
h
e
-
co
m
m
er
ce
[
1
3
-
1
4
]
.
T
h
u
s
,
t
h
e
s
y
s
te
m
r
ec
o
m
m
e
n
d
atio
n
in
e
-
co
m
m
er
ce
ca
n
b
o
o
s
t p
r
o
d
u
ct
s
ales.
I
n
ad
d
itio
n
,
in
s
t
u
d
y
[
1
5
]
o
n
th
e
v
al
u
e
cr
ea
tio
n
in
t
h
e
v
id
eo
g
a
m
e
i
n
d
u
s
tr
y
s
h
o
w
ed
th
er
e
is
in
cr
ea
s
i
n
g
ec
o
n
o
m
ic
an
d
i
n
d
u
s
tr
ial
b
e
n
ef
its
f
o
r
co
n
s
u
m
er
s
.
R
esear
c
h
Z
o
tt
et
al.
(
2
0
0
0
)
h
as
p
r
o
p
o
s
ed
a
s
tr
ateg
y
f
o
r
v
alu
e
cr
ea
t
io
n
i
n
e
-
co
m
m
er
ce
[
1
6
]
.
Valu
e
cr
ea
tio
n
f
r
o
m
th
e
s
e
s
t
u
d
ies
i
s
en
h
an
cin
g
tr
a
n
s
ac
tio
n
ef
f
icien
c
y
,
co
m
p
le
m
en
tar
y
,
lo
ck
-
in
,
an
d
n
o
v
elt
y
.
E
f
f
ic
ien
c
y
:
cu
s
to
m
e
m
r
s
d
o
n
o
t
h
av
e
to
b
o
th
er
lo
o
k
in
g
f
o
r
ite
m
s
to
th
e
s
to
r
e
o
r
s
h
o
p
o
f
f
l
in
e,
th
e
y
ca
n
m
a
k
e
th
e
s
elec
ti
o
n
o
f
g
o
o
d
s
th
r
o
u
g
h
o
n
li
n
e
s
o
it
ca
n
s
av
e
ti
m
e.
C
o
m
p
le
m
en
tar
y
:
t
h
e
cu
s
to
m
e
r
n
o
t
o
n
l
y
g
et
s
th
e
p
r
o
d
u
cts
an
d
s
er
v
ice
o
f
th
e
g
o
o
d
s
th
e
y
ar
e
lo
o
k
in
g
f
o
r
b
u
t
also
g
et
o
th
er
p
r
o
d
u
cts,
s
u
ch
a
s
a
b
o
o
k
r
ea
d
er
v
is
ited
tr
av
el
s
ites
,
at
th
e
cu
s
to
m
er
'
s
s
i
te
g
ets
in
f
o
r
m
a
tio
n
ab
o
u
t
w
ea
t
h
er
,
c
u
r
r
en
c
y
ex
c
h
a
n
g
e
i
n
f
o
r
m
atio
n
,
w
h
er
e
s
u
c
h
in
f
o
r
m
atio
n
is
a
v
alu
e
f
o
r
th
e
m
ai
n
p
r
o
d
u
cts
t
h
at
ar
e
s
o
ld
(
tr
av
el
tick
e
ts
a
n
d
p
ac
k
ag
e
h
o
lid
a
y
s
)
.
L
o
ck
-
i
n
:
C
u
s
to
m
e
r
s
w
ill r
eselect
th
e
t
y
p
e
o
f
p
r
o
d
u
ct
o
r
s
er
v
ice
t
h
a
t
is
o
n
o
f
f
er
at
th
e
s
i
te
w
h
er
e
it
in
cr
ea
s
ed
s
ales
r
e
v
en
u
e
v
a
lu
e.
No
v
elt
y
:
C
u
s
to
m
er
s
g
et
a
n
e
w
p
r
o
d
u
ct
o
f
f
er
in
g
s
an
d
s
er
v
ice
o
f
t
h
e
co
m
p
a
n
y
's
n
e
w
s
y
s
te
m
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
an
al
y
s
is
w
a
s
m
ad
e
b
ased
o
n
d
ata
f
r
o
m
2
0
1
3
to
2
0
1
5
o
n
th
e
w
eb
s
ite
o
f
e
-
co
m
m
er
ce
co
m
p
a
n
ies.
T
h
e
d
ata
o
b
tain
ed
w
ill
b
e
a
n
al
y
ze
d
to
d
eter
m
in
e
a
n
i
n
d
i
ca
tio
n
o
f
t
h
e
e
x
is
ten
ce
o
f
cu
s
to
m
er
i
n
ter
est
f
o
r
p
r
o
d
u
cts
an
d
p
r
o
m
o
tio
n
s
.
An
al
y
s
i
s
is
d
o
n
e
b
y
lo
o
k
in
g
at
th
e
d
ata
t
y
p
e
o
f
th
e
co
m
p
an
y
i
n
s
u
b
s
cr
ib
in
g
to
p
r
o
d
u
cts
an
d
p
r
o
m
o
tio
n
s
.
T
h
e
r
esu
lts
o
f
th
e
an
a
l
y
s
is
w
ill
b
e
u
s
ed
as
th
e
b
asis
f
o
r
p
r
o
d
u
c
t
r
ec
o
m
m
en
d
atio
n
s
an
d
p
r
o
m
o
tio
n
s
.
I
n
o
r
d
er
to
i
m
p
le
m
en
t
r
elatio
n
s
a
n
d
p
r
o
m
o
tio
n
o
f
t
h
e
p
r
o
d
u
ct
s
o
f
f
er
ed
f
o
r
t
h
e
c
u
s
to
m
er
's
i
n
ter
est,
th
is
r
esear
c
h
w
ill
p
r
o
p
o
s
e
p
r
o
to
t
y
p
e
r
ec
o
m
m
e
n
d
atio
n
.
T
h
is
p
r
o
to
ty
p
e
is
a
d
ev
elo
p
m
e
n
t
o
f
th
e
p
r
ev
io
u
s
w
eb
.
R
elatio
n
s
a
n
d
p
r
o
m
o
tio
n
al
p
r
o
d
u
cts
o
f
f
er
ed
f
o
r
t
h
e
cu
s
to
m
er
'
s
in
ter
es
t.
P
r
o
to
ty
p
e
r
ec
o
m
m
en
d
atio
n
m
ad
e
b
y
r
ec
o
m
m
e
n
d
in
g
p
r
o
d
u
cts
a
n
d
p
r
o
m
o
o
f
f
er
s
to
ea
c
h
t
y
p
e
o
f
co
m
p
an
y
.
I
t
is
b
ased
o
n
a
n
al
y
s
i
s
o
f
cu
s
to
m
er
in
ter
est
h
a
s
b
ee
n
d
is
c
u
s
s
ed
in
s
ec
tio
n
3
.
1
.
T
h
e
p
r
o
p
o
s
ed
p
r
o
to
ty
p
e
i
s
a
d
i
s
p
lay
o
f
r
eg
i
s
tr
atio
n
,
r
ec
o
m
m
e
n
d
atio
n
o
f
p
r
o
d
u
cts
an
d
p
r
o
m
o
tio
n
al
o
f
f
er
s
,
as
w
ell
as
s
ta
ti
s
tic
s
to
d
eter
m
in
e
th
e
n
u
m
b
er
o
f
cu
s
to
m
er
s
T
h
is
r
esear
ch
u
s
ed
p
r
im
ar
y
d
ata
co
llected
u
s
i
n
g
q
u
e
s
tio
n
n
air
es
w
ith
t
h
e
h
elp
o
f
an
o
n
li
n
e
s
u
r
v
e
y
to
o
l.
T
h
e
q
u
esti
o
n
n
air
e
i
s
d
iv
id
ed
in
to
t
w
o
p
ar
ts
,
n
a
m
el
y
A
a
n
d
B
.
P
ar
t
A
o
f
t
h
e
q
u
e
s
tio
n
n
air
e
co
n
tai
n
s
q
u
esti
o
n
s
ab
o
u
t
th
e
d
e
m
o
g
r
ap
h
ic
p
r
o
f
ile
o
f
r
esp
o
n
d
e
n
ts
s
u
c
h
as
:
ag
e,
g
e
n
d
er
,
j
o
b
,
ed
u
ca
t
io
n
al
b
ac
k
g
r
o
u
n
d
,
an
d
d
o
m
icile.
P
ar
t
B
o
f
th
e
q
u
esti
o
n
n
a
ir
e
co
m
p
r
is
ed
6
q
u
e
s
tio
n
s
th
eo
r
etica
l
f
r
a
m
e
w
o
r
k
o
f
th
e
s
t
u
d
y
,
w
h
ic
h
ar
e:
t
w
o
q
u
est
io
n
s
f
o
r
ef
f
icie
n
c
y
,
o
n
e
f
o
r
co
m
p
le
m
en
ta
r
y
,
t
wo
f
o
r
lo
ck
-
i
n
,
o
n
e
f
o
r
n
o
v
e
lt
y
.
T
h
is
m
ea
s
u
r
e
m
e
n
t
m
o
d
el
w
a
s
i
m
p
le
m
e
n
ted
u
s
i
n
g
b
iv
ar
ia
t
e
co
r
r
elatio
n
,
th
a
t
is
,
to
co
n
f
ir
m
th
e
r
eliab
ilit
y
o
f
th
e
m
ea
s
u
r
e
s
,
to
d
eter
m
in
e
v
alid
it
y
a
n
d
test
h
y
p
o
th
esis
a
s
s
h
o
w
n
Fi
g
u
r
e
1
.
T
h
e
h
y
p
o
th
e
s
es
f
o
r
th
e
s
tu
d
y
ar
e
(
1
)
h
y
p
o
th
e
s
is
_
1
(
H1
)
:
ef
f
icien
c
y
f
ac
t
o
r
af
f
ec
t
s
t
h
e
v
a
lu
e
cr
ea
ti
o
n
o
f
t
h
e
s
y
s
te
m
r
ec
o
m
m
e
n
d
atio
n
s
;
(
2
)
h
y
p
o
t
h
esi
s
_
2
(
H2
)
:
lo
ck
-
i
n
f
ac
to
r
af
f
ec
ts
t
h
e
v
al
u
e
cr
ea
tio
n
o
f
th
e
s
y
s
te
m
r
ec
o
m
m
e
n
d
atio
n
s
;
(
3
)
h
y
p
o
th
esi
s
_
3
(
H3
)
:
co
m
p
le
m
e
n
tar
y
a
f
f
ec
ts
t
h
e
v
a
lu
e
cr
ea
t
io
n
o
f
th
e
s
y
s
te
m
r
ec
o
m
m
e
n
d
atio
n
s
;
a
n
d
(
4
)
h
y
p
o
t
h
esi
s
_
4
(
H4
)
:
n
o
v
el
t
y
f
ac
to
r
af
f
ec
t
s
t
h
e
v
al
u
e
cr
ea
t
io
n
o
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atio
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
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p
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N:
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229
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ad
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I
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230
T
h
e
p
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d
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p
ac
k
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n
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r
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ased
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er
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an
d
w
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o
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t
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n
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d
s
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T
h
is
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elatio
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ca
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b
e
u
s
ed
as a
r
ef
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e
n
ce
to
m
a
k
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o
m
m
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te
m
.
3
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2
.
P
ro
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Rec
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mm
end
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t
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P
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atio
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c
o
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s
is
ts
o
f
t
h
r
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m
a
in
v
ie
w
s
:
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eg
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tr
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,
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o
m
m
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d
atio
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s
an
d
p
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m
o
p
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f
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s
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o
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f
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ed
at
a
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t
f
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.
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h
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eg
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s
tr
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ca
n
b
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s
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n
in
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r
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3
.
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t
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s
ed
to
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ill
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to
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m
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to
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in
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ata
cu
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to
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b
as
is
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o
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m
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d
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p
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d
p
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g
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4
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ased
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u
r
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3
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u
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4
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S
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ased
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ilt
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ased
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w
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iab
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m
in
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ize
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:
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t
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r
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teg
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last
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ca
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ag
r
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d
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h
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b
u
tto
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s
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th
e
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y
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m
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
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n
J
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E
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&
C
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m
p
Sci
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SS
N:
2502
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4752
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-
C
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mme
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(
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231
3
.
3
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v
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lua
t
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Va
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re
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n P
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m
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RE
F
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[1
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Ch
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lew
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b
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T
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In
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[4
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S
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trate
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