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ere.
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Blended lea
rni
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inf
l
uencin
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student
enga
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ement in
hig
her educa
tion
L
a
i Th
i
T
hu
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h
uy
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uy
en
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hu
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o
a
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ev
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Feb
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ep
ted
Feb
23
,
2
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6
Th
is
st
u
d
y
e
x
a
m
in
e
s
t
h
e
fa
c
to
rs
a
ss
o
c
iate
d
with
stu
d
e
n
t
e
n
g
a
g
e
m
e
n
t
(S
E)
i
n
b
len
d
e
d
lea
rn
i
n
g
e
n
v
ir
o
n
m
e
n
ts
i
n
h
ig
h
e
r
e
d
u
c
a
ti
o
n
,
with
p
a
rti
c
u
lar
a
tt
e
n
ti
o
n
to
th
e
m
e
d
iati
n
g
r
o
le
o
f
p
e
rc
e
iv
e
d
u
se
fu
l
n
e
ss
(P
U)
.
Dra
win
g
o
n
th
e
in
fo
rm
a
ti
o
n
sy
ste
m
s
su
c
c
e
ss
m
o
d
e
l
a
n
d
t
h
e
tec
h
n
o
lo
g
y
a
c
c
e
p
tan
c
e
m
o
d
e
l
(TAM
)
,
a
n
in
teg
ra
ted
re
se
a
rc
h
m
o
d
e
l
in
c
o
r
p
o
ra
ti
n
g
s
y
ste
m
q
u
a
li
ty
(S
Q)
,
c
o
n
ten
t
q
u
a
li
t
y
(CQ)
,
tea
c
h
e
r
su
p
p
o
rt
(T
S
)
,
in
tera
c
ti
o
n
(IN)
,
PU
,
a
n
d
SE
wa
s
p
ro
p
o
se
d
a
n
d
e
m
p
iri
c
a
ll
y
te
ste
d
.
Da
ta
we
re
c
o
ll
e
c
ted
fro
m
2
8
8
u
n
d
e
r
g
ra
d
u
a
te
st
u
d
e
n
ts
a
t
u
n
iv
e
rs
it
ies
in
Vie
tn
a
m
a
n
d
a
n
a
ly
z
e
d
u
si
n
g
p
a
rti
a
l
lea
st
s
q
u
a
re
s
stru
c
t
u
ra
l
e
q
u
a
ti
o
n
m
o
d
e
li
n
g
(
P
LS
-
S
EM
).
T
h
e
re
su
lt
s
in
d
ica
te
th
a
t
SQ
,
CQ
,
TS
,
a
n
d
IN
a
re
sig
n
ifi
c
a
n
tl
y
a
ss
o
c
iate
d
with
PU
.
PU
,
in
tu
r
n
,
sh
o
ws
a
stro
n
g
p
o
siti
v
e
a
ss
o
c
iatio
n
wit
h
SE
.
W
h
il
e
SQ
a
n
d
TS
a
re
a
lso
d
irec
tl
y
re
late
d
to
e
n
g
a
g
e
m
e
n
t,
th
e
re
latio
n
sh
ip
s b
e
twe
e
n
CQ
,
IN
,
a
n
d
SE
a
re
p
rima
ril
y
i
n
d
irec
t
t
h
r
o
u
g
h
PU
,
h
i
g
h
li
g
h
t
in
g
it
s
c
e
n
tral
m
e
d
iatin
g
r
o
le.
T
h
e
se
fin
d
i
n
g
s
c
o
n
tri
b
u
te
t
o
a
m
o
re
n
u
a
n
c
e
d
u
n
d
e
rsta
n
d
i
n
g
o
f
h
o
w
b
len
d
e
d
lea
rn
in
g
fa
c
to
rs j
o
in
tl
y
e
x
p
lai
n
SE
a
n
d
o
ffe
r
th
e
o
re
ti
c
a
l
a
n
d
p
ra
c
ti
c
a
l
in
sig
h
ts
fo
r
th
e
d
e
sig
n
a
n
d
imp
lem
e
n
tati
o
n
o
f
b
len
d
e
d
lea
rn
in
g
in
h
i
g
h
e
r
e
d
u
c
a
ti
o
n
.
K
ey
w
o
r
d
s
:
B
len
d
ed
lear
n
in
g
Per
ce
iv
ed
u
s
ef
u
ln
ess
Stu
d
en
t e
n
g
a
g
em
en
t
Sy
s
tem
q
u
ality
T
ea
ch
er
s
u
p
p
o
r
t
T
h
is i
s
a
n
o
p
e
n
a
c
c
e
ss
a
rticle
u
n
d
e
r th
e
CC B
Y
-
SA
li
c
e
n
se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Ng
u
y
en
T
h
u
Ho
ai
I
n
s
titu
te
o
f
Acc
o
u
n
tin
g
an
d
A
u
d
itin
g
,
T
h
u
o
n
g
m
ai
Un
iv
e
r
s
ity
No
7
9
Ho
T
u
n
g
Ma
u
,
C
au
Gia
y
,
Han
o
i,
Vietn
am
E
m
ail: n
g
u
y
e
n
h
o
ai@
tm
u
.
ed
u
.
v
n
1.
I
NT
RO
D
UCT
I
O
N
T
h
e
r
a
p
id
in
te
g
r
atio
n
o
f
d
ig
it
al
tech
n
o
lo
g
ies
in
to
h
ig
h
er
e
d
u
ca
tio
n
h
as
f
u
n
d
am
e
n
tally
tr
an
s
f
o
r
m
e
d
teac
h
in
g
an
d
lear
n
in
g
p
r
ac
tices,
p
ar
ticu
lar
ly
th
r
o
u
g
h
th
e
wid
esp
r
ea
d
ad
o
p
tio
n
o
f
b
le
n
d
ed
lear
n
in
g
m
o
d
els.
B
len
d
ed
lear
n
in
g
,
wh
ic
h
co
m
b
in
es
f
ac
e
-
to
-
f
ac
e
in
s
tr
u
ctio
n
with
o
n
lin
e
lea
r
n
in
g
ac
tiv
ities
,
h
as
b
ee
n
wid
ely
p
r
o
m
o
te
d
f
o
r
its
p
o
ten
tial
to
en
h
an
ce
f
lex
ib
ilit
y
,
ac
ce
s
s
ib
ilit
y
,
an
d
lear
n
in
g
ef
f
ec
tiv
e
n
ess
.
Me
ta
-
an
aly
tic
ev
id
en
ce
s
u
g
g
ests
th
at
b
len
d
ed
lear
n
in
g
ca
n
lead
to
lear
n
in
g
o
u
tco
m
es
th
at
ar
e
co
m
p
ar
ab
le
to
,
o
r
e
v
en
s
u
p
er
io
r
to
,
th
o
s
e
o
f
t
r
ad
it
io
n
al
in
s
tr
u
ctio
n
al
ap
p
r
o
ac
h
es
[
1
]
.
C
o
n
s
eq
u
en
tly
,
u
n
iv
er
s
ities
wo
r
ld
wid
e
in
cr
ea
s
in
g
ly
r
ely
o
n
lear
n
in
g
m
an
ag
em
en
t sy
s
tem
s
(
L
MS)
t
o
s
u
p
p
o
r
t b
len
d
e
d
lear
n
i
n
g
im
p
lem
en
tatio
n
.
Desp
ite
th
e
g
r
o
win
g
p
r
ev
ale
n
ce
o
f
b
len
d
ed
lear
n
in
g
,
its
ef
f
ec
tiv
en
ess
ca
n
n
o
t
b
e
ass
u
m
ed
s
o
lely
b
ased
o
n
tech
n
o
l
o
g
ical
av
ailab
ilit
y
.
Prio
r
r
esear
ch
in
d
ica
tes
th
at
th
e
s
u
cc
es
s
o
f
e
-
lea
r
n
in
g
an
d
b
len
d
e
d
lear
n
in
g
s
y
s
tem
s
d
e
p
en
d
s
o
n
m
u
ltip
le
in
ter
r
elate
d
f
ac
t
o
r
s
,
in
clu
d
in
g
s
y
s
tem
q
u
ality
(
S
Q)
,
co
n
te
n
t
q
u
ality
(
C
Q)
,
an
d
in
s
tr
u
cti
o
n
al
s
u
p
p
o
r
t
[
2
]
–
[
4
]
.
W
h
ile
th
ese
f
ac
to
r
s
ar
e
o
f
ten
ev
alu
ate
d
in
te
r
m
s
o
f
s
y
s
tem
s
u
cc
ess
o
r
u
s
er
s
atis
f
ac
tio
n
,
less
is
k
n
o
w
n
ab
o
u
t
h
o
w
th
ey
jo
in
tly
co
n
t
r
ib
u
te
to
s
tu
d
en
ts
’
ac
tiv
e
in
v
o
lv
em
en
t
in
lear
n
in
g
p
r
o
ce
s
s
es,
co
m
m
o
n
ly
co
n
ce
p
t
u
alize
d
as st
u
d
en
t e
n
g
a
g
em
en
t
(
SE)
.
SE
h
as
em
er
g
ed
as
a
ce
n
tr
al
co
n
s
tr
u
ct
in
h
ig
h
e
r
ed
u
ca
tio
n
r
esear
ch
d
u
e
to
its
s
tr
o
n
g
ass
o
ciatio
n
with
lear
n
in
g
o
u
tco
m
es,
p
e
r
s
is
ten
ce
,
an
d
ac
ad
em
ic
s
u
c
ce
s
s
.
E
n
g
ag
em
en
t
is
g
en
er
a
lly
u
n
d
er
s
to
o
d
as
a
m
u
ltid
im
en
s
io
n
al
co
n
s
tr
u
ct
en
co
m
p
ass
in
g
s
tu
d
e
n
ts
’
b
e
h
a
v
io
r
al,
e
m
o
tio
n
al,
an
d
co
g
n
iti
v
e
in
v
o
lv
em
en
t
in
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t
J
E
v
al
&
R
es E
d
u
c
I
SS
N:
2252
-
8
8
2
2
B
len
d
ed
lea
r
n
in
g
fa
cto
r
s
in
flu
en
cin
g
s
tu
d
en
t e
n
g
a
g
eme
n
t in
h
ig
h
er e
d
u
c
a
tio
n
(
La
i Th
i Th
u
Th
u
y
)
1479
lear
n
in
g
ac
tiv
ities
[
5
]
.
I
n
th
e
co
n
tex
t
o
f
h
ig
h
e
r
ed
u
ca
tio
n
,
e
n
g
ag
em
e
n
t
r
ef
lects
s
tu
d
en
ts
’
ac
tiv
e
p
ar
ticip
atio
n
,
s
u
s
tain
ed
ef
f
o
r
t,
a
n
d
p
s
y
ch
o
l
o
g
ical
in
v
estme
n
t
in
t
h
eir
lea
r
n
in
g
e
x
p
er
ien
ce
s
[
6
]
,
[
7
]
.
R
ec
en
t
s
tu
d
ies
f
u
r
th
er
em
p
h
asize
th
at
en
g
ag
em
e
n
t
i
s
n
o
t
m
er
ely
an
in
d
iv
id
u
al
at
tr
ib
u
te
b
u
t
is
s
h
ap
ed
b
y
lear
n
in
g
e
n
v
ir
o
n
m
en
ts
,
in
s
tr
u
ctio
n
al
p
r
ac
tices,
an
d
tech
n
o
lo
g
ical
a
f
f
o
r
d
an
ce
s
[
8
]
,
[
9
]
.
W
ith
in
b
len
d
ed
lear
n
in
g
en
v
ir
o
n
m
en
ts
,
in
s
tr
u
ct
o
r
-
r
elate
d
f
a
cto
r
s
an
d
in
ter
ac
tio
n
(
I
N)
p
r
o
ce
s
s
es
p
lay
a
p
ar
ticu
lar
ly
im
p
o
r
tan
t
r
o
le
in
s
h
ap
in
g
s
tu
d
en
ts
’
lear
n
in
g
ex
p
er
ien
ce
s
.
T
ea
c
h
er
s
u
p
p
o
r
t
(
T
S)
,
in
clu
d
i
n
g
g
u
id
an
ce
,
f
ee
d
b
ac
k
,
a
n
d
e
n
co
u
r
ag
em
en
t,
h
as
co
n
s
is
ten
tly
b
ee
n
lin
k
ed
to
h
ig
h
er
lev
els
o
f
SE
ac
r
o
s
s
v
ar
io
u
s
ed
u
ca
tio
n
al
co
n
te
x
ts
[
1
0
]
,
[
1
1
]
.
Similar
ly
,
m
ea
n
in
g
f
u
l
IN
am
o
n
g
s
tu
d
en
ts
an
d
b
et
wee
n
s
tu
d
en
ts
an
d
in
s
tr
u
cto
r
s
h
as
b
ee
n
s
h
o
wn
to
en
h
an
ce
u
n
d
e
r
s
tan
d
in
g
,
m
o
tiv
atio
n
,
an
d
en
g
ag
em
en
t,
esp
ec
i
ally
in
tech
n
o
lo
g
y
-
m
ed
iated
lear
n
in
g
s
ettin
g
s
[
1
2
]
,
[
1
3
]
.
T
h
ese
f
in
d
in
g
s
ar
e
clo
s
ely
alig
n
ed
with
th
e
co
m
m
u
n
ity
o
f
in
q
u
ir
y
(
C
o
I
)
f
r
am
ewo
r
k
,
wh
ic
h
em
p
h
asizes
teac
h
in
g
p
r
esen
ce
an
d
IN
as
k
ey
d
eter
m
in
a
n
ts
o
f
m
ea
n
in
g
f
u
l
lear
n
i
n
g
i
n
o
n
lin
e
an
d
b
len
d
ed
en
v
ir
o
n
m
e
n
ts
[
1
4
]
,
[
1
5
]
.
I
n
ad
d
itio
n
to
en
v
ir
o
n
m
en
tal
an
d
in
s
tr
u
ctio
n
al
f
ac
to
r
s
,
s
tu
d
en
ts
’
p
er
ce
p
tio
n
s
o
f
tech
n
o
lo
g
y
p
lay
a
cr
itical
m
ed
iatin
g
r
o
le
in
d
e
ter
m
in
in
g
lear
n
in
g
-
r
elate
d
o
u
t
co
m
es.
Acc
o
r
d
in
g
to
t
h
e
tech
n
o
lo
g
y
ac
ce
p
ta
n
ce
m
o
d
el
(
T
AM
)
,
p
er
ce
iv
e
d
u
s
ef
u
ln
ess
(
PU)
r
ep
r
esen
ts
th
e
ex
ten
t
to
wh
ich
in
d
iv
id
u
als
b
eliev
e
th
at
u
s
in
g
a
p
ar
ticu
lar
s
y
s
tem
en
h
an
ce
s
th
eir
p
er
f
o
r
m
a
n
ce
[
1
6
]
.
E
m
p
i
r
ical
ev
id
en
ce
co
n
s
is
ten
tly
d
e
m
o
n
s
tr
ates
th
at
PU
in
f
lu
en
ce
s
lear
n
er
s
’
attitu
d
es,
co
n
tin
u
ed
u
s
e
o
f
lear
n
i
n
g
tech
n
o
lo
g
ies,
an
d
lear
n
in
g
-
r
elate
d
b
eh
av
io
r
s
in
o
n
lin
e
an
d
b
len
d
ed
co
n
tex
ts
[
1
7
]
,
[
1
8
]
.
R
ec
en
t
s
tu
d
ies
f
u
r
th
er
s
u
g
g
est
th
at
PU
m
ay
s
er
v
e
as
an
im
p
o
r
tan
t
p
s
y
ch
o
lo
g
ical
m
ec
h
an
is
m
th
r
o
u
g
h
wh
ich
in
s
tr
u
ctio
n
al
q
u
al
ity
an
d
s
u
p
p
o
r
t
tr
a
n
s
late
in
to
h
ig
h
er
lev
els
o
f
SE
.
Ho
wev
er
,
its
r
o
le
as
an
in
teg
r
ated
m
ed
iatin
g
m
ec
h
a
n
is
m
lin
k
in
g
m
u
ltip
le
b
le
n
d
ed
lear
n
in
g
f
ac
to
r
s
to
SE
h
as
n
o
t y
et
b
ee
n
s
u
f
f
icien
tly
t
h
eo
r
i
ze
d
an
d
e
m
p
ir
ically
ex
a
m
in
ed
[
1
0
]
.
Alth
o
u
g
h
p
r
io
r
s
tu
d
ies h
av
e
e
x
am
in
ed
r
elatio
n
s
h
ip
s
am
o
n
g
b
len
d
ed
lear
n
i
n
g
f
ac
to
r
s
an
d
SE
,
ex
is
tin
g
r
esear
ch
o
f
ten
f
o
cu
s
es
o
n
d
ir
e
ct
ef
f
ec
ts
o
r
alter
n
ativ
e
lear
n
i
n
g
o
u
tco
m
es.
R
ec
en
t
s
tu
d
ies
i
n
h
ig
h
er
ed
u
ca
tio
n
h
av
e
in
v
esti
g
ated
SE
a
n
d
r
elate
d
co
n
s
tr
u
cts
in
o
n
lin
e
an
d
b
len
d
ed
lear
n
in
g
co
n
tex
ts
,
s
u
ch
as
m
o
tiv
atio
n
,
s
elf
-
d
ir
ec
ted
lear
n
in
g
r
ea
d
in
e
s
s
,
an
d
teac
h
in
g
s
ty
les
[
1
9
]
–
[
2
1
]
.
Ho
wev
er
,
t
h
ese
s
tu
d
ies
ten
d
to
e
x
am
in
e
is
o
lated
p
r
ed
icto
r
s
o
r
d
if
f
e
r
en
t
o
u
tco
m
e
v
ar
ia
b
les,
an
d
p
r
o
v
id
e
lim
ited
in
s
ig
h
t
in
to
th
e
u
n
d
er
ly
i
n
g
m
ec
h
an
is
m
s
th
r
o
u
g
h
wh
ich
m
u
ltip
le
b
len
d
ed
lea
r
n
in
g
f
ac
to
r
s
jo
in
tly
s
h
ap
e
SE
.
I
n
p
ar
ticu
la
r
,
th
e
r
o
le
o
f
PU
as
an
in
teg
r
ated
m
ed
iatin
g
m
ec
h
an
is
m
lin
k
in
g
SQ
,
CQ
,
T
S,
an
d
IN
to
SE
r
em
ain
s
i
n
s
u
f
f
icien
tly
ex
am
i
n
ed
,
esp
ec
ially
in
h
ig
h
er
ed
u
ca
tio
n
s
ettin
g
s
with
in
d
ev
elo
p
in
g
co
u
n
tr
ies.
T
o
ad
d
r
ess
th
is
g
ap
,
th
is
s
tu
d
y
in
v
esti
g
ates
h
o
w
SQ,
C
Q,
T
S,
an
d
I
N
ar
e
ass
o
ciate
d
with
SE
,
with
PU
s
er
v
in
g
as
a
ce
n
tr
al
m
ed
iatin
g
v
ar
ia
b
le.
Usi
n
g
p
a
r
tial
l
e
as
t
s
q
u
a
r
es
s
t
r
u
c
t
u
r
a
l
e
q
u
a
t
i
o
n
m
o
d
e
l
i
n
g
(
PLS
-
SEM
)
an
d
s
u
r
v
ey
d
ata
f
r
o
m
u
n
d
er
g
r
ad
u
ate
s
tu
d
en
ts
in
b
len
d
ed
lea
r
n
in
g
c
o
n
tex
ts
,
th
is
s
tu
d
y
ex
ten
d
s
p
r
io
r
r
esear
ch
b
y
p
r
o
p
o
s
in
g
a
n
d
test
in
g
an
in
teg
r
ated
m
ed
ia
tio
n
f
r
am
ewo
r
k
th
at
d
if
f
e
r
en
ti
ates
b
etwe
en
d
ir
ec
t,
in
d
ir
ec
t,
an
d
p
ar
tially
m
ed
iate
d
r
elatio
n
s
h
ip
s
.
B
y
clar
if
y
in
g
th
e
d
is
tin
ct
m
ed
iatin
g
p
atter
n
s
o
f
PU
,
th
e
s
tu
d
y
co
n
tr
ib
u
tes
to
a
m
o
r
e
n
u
an
c
e
d
u
n
d
er
s
tan
d
in
g
o
f
h
o
w
b
le
n
d
ed
lear
n
i
n
g
en
v
ir
o
n
m
en
ts
ex
p
lain
SE
in
h
ig
h
er
ed
u
ca
tio
n
.
2.
T
H
E
O
R
E
T
I
CA
L
B
ACK
G
R
O
UND
AND
H
YP
O
T
H
E
SE
S
2
.
1
.
Student
eng
a
g
e
m
ent
in
hig
her
educa
t
io
n
SE
is
wid
ely
r
ec
o
g
n
ized
as
a
k
ey
d
eter
m
in
an
t
o
f
lear
n
in
g
q
u
ality
a
n
d
a
ca
d
em
ic
s
u
cc
ess
in
h
ig
h
e
r
ed
u
ca
tio
n
.
I
t
r
ef
e
r
s
to
s
tu
d
en
ts
’
ac
tiv
e
in
v
o
lv
em
en
t,
ef
f
o
r
t,
a
n
d
in
ter
est
in
lear
n
in
g
ac
tiv
ities
.
SE
i
s
co
m
m
o
n
ly
v
iewe
d
as
a
m
u
ltid
im
en
s
io
n
al
co
n
s
tr
u
ct
en
co
m
p
ass
in
g
b
e
h
av
io
r
al,
em
o
tio
n
al,
an
d
co
g
n
itiv
e
co
m
p
o
n
e
n
ts
,
em
p
h
asizin
g
b
o
th
ac
tiv
e
p
ar
ticip
atio
n
an
d
p
s
y
ch
o
l
o
g
ical
in
v
e
s
tm
en
t
[
5
]
.
I
n
h
ig
h
e
r
ed
u
ca
tio
n
,
en
g
ag
e
m
en
t e
x
ten
d
s
b
ey
o
n
d
class
r
o
o
m
p
ar
ticip
atio
n
to
in
clu
d
e
IN
wi
th
lear
n
in
g
r
eso
u
r
ce
s
,
in
s
tr
u
cto
r
s
,
an
d
p
ee
r
s
ac
r
o
s
s
p
h
y
s
ical
an
d
d
ig
ital
en
v
ir
o
n
m
en
ts
an
d
is
s
h
ap
ed
b
y
lear
n
in
g
c
o
n
tex
ts
r
ath
er
th
an
b
ein
g
s
o
lely
an
in
d
iv
id
u
al
attr
ib
u
te
[
6
]
,
[
7
]
.
E
n
g
ag
em
e
n
t
is
also
clo
s
e
ly
ass
o
ciate
d
wit
h
m
o
tiv
atio
n
al
a
n
d
s
elf
-
r
e
g
u
lat
o
r
y
f
ac
to
r
s
,
s
u
ch
as
ac
ad
em
i
c
m
o
tiv
atio
n
an
d
s
elf
-
ef
f
icac
y
,
wh
ich
in
f
lu
e
n
ce
s
tu
d
en
ts
’
p
er
s
is
ten
ce
an
d
ef
f
o
r
t
in
lear
n
in
g
[
2
2
]
–
[
2
5
]
.
W
ith
th
e
in
cr
ea
s
in
g
u
s
e
o
f
L
M
S
,
SE
h
as
b
ec
o
m
e
clo
s
ely
lin
k
ed
to
s
tu
d
e
n
ts
’
ex
p
er
ien
ce
s
in
tech
n
o
lo
g
y
-
en
h
a
n
ce
d
an
d
b
len
d
e
d
lear
n
i
n
g
e
n
v
ir
o
n
m
en
ts
an
d
is
in
cr
ea
s
in
g
ly
v
iewe
d
as a
h
o
lis
tic
in
d
icato
r
o
f
ed
u
ca
tio
n
al
q
u
a
lity
an
d
s
u
cc
ess
in
h
ig
h
e
r
ed
u
c
atio
n
[
8
]
,
[
9
]
.
Alth
o
u
g
h
SE
is
wid
ely
c
o
n
ce
p
tu
alize
d
as
a
m
u
ltid
im
e
n
s
io
n
al
co
n
s
tr
u
ct
e
n
co
m
p
ass
in
g
b
eh
av
io
r
al,
em
o
tio
n
al,
an
d
co
g
n
itiv
e
co
m
p
o
n
en
ts
,
p
r
io
r
r
esear
c
h
in
h
ig
h
er
ed
u
ca
tio
n
h
as a
ls
o
o
p
er
atio
n
alize
d
en
g
ag
e
m
en
t
as
a
u
n
id
im
en
s
io
n
al
r
ef
lectiv
e
co
n
s
tr
u
ct
wh
en
th
e
f
o
c
u
s
is
o
n
s
tu
d
en
ts
’
o
v
er
all
in
v
o
l
v
em
en
t
an
d
lear
n
in
g
in
v
estme
n
t
r
ath
er
th
an
o
n
d
i
s
tin
ct
s
u
b
-
d
im
en
s
io
n
s
[
6
]
–
[
8
]
.
I
n
tech
n
o
lo
g
y
-
en
h
an
ce
d
an
d
b
len
d
ed
lear
n
i
n
g
co
n
tex
ts
,
th
ese
d
im
en
s
io
n
s
ar
e
o
f
ten
h
ig
h
ly
in
ter
r
elate
d
a
n
d
j
o
in
tly
r
ef
lect
s
tu
d
en
ts
’
g
en
e
r
al
en
g
ag
em
e
n
t
with
lear
n
in
g
ac
tiv
ities
.
Acc
o
r
d
in
g
ly
,
th
is
s
tu
d
y
co
n
ce
p
tu
alize
s
SE
as
a
s
in
g
le
h
ig
h
er
-
o
r
d
er
c
o
n
s
tr
u
ct
ca
p
tu
r
in
g
s
tu
d
en
ts
’
o
v
er
all
en
g
ag
em
e
n
t
ex
p
er
ien
ce
in
b
len
d
e
d
lear
n
i
n
g
en
v
ir
o
n
m
en
ts
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
2
2
I
n
t
J
E
v
al
&
R
es E
d
u
c
,
Vo
l
.
15
,
No
.
2
,
Ap
r
il
20
2
6
:
1
4
7
8
-
1
4
8
7
1480
2
.
2
.
B
lended
lea
rning
a
nd
s
t
ud
ent
eng
a
g
em
ent
B
len
d
ed
lear
n
in
g
,
w
h
ich
co
m
b
in
es
f
ac
e
-
to
-
f
a
ce
in
s
tr
u
ctio
n
with
o
n
lin
e
a
n
d
tech
n
o
lo
g
y
-
m
ed
iated
ac
tiv
ities
,
h
as
b
ec
o
m
e
wid
ely
ad
o
p
ted
in
h
ig
h
er
ed
u
ca
tio
n
an
d
h
as
b
ee
n
ass
o
ciate
d
with
en
h
an
ce
d
lear
n
in
g
o
u
tco
m
es b
y
in
teg
r
atin
g
class
r
o
o
m
IN
with
d
ig
ital f
lex
ib
ilit
y
[
1
]
.
Ho
wev
er
,
its
ef
f
ec
tiv
en
es
s
d
ep
en
d
s
n
o
t o
n
ly
o
n
in
s
tr
u
ctio
n
al
d
esig
n
b
u
t
also
o
n
h
o
w
s
tu
d
en
ts
ex
p
er
ien
ce
an
d
e
n
g
ag
e
with
th
e
b
len
d
ed
lear
n
in
g
en
v
ir
o
n
m
en
t.
I
n
th
is
co
n
tex
t,
SE
h
as e
m
er
g
ed
as a
ce
n
tr
al
c
o
n
ce
r
n
i
n
b
len
d
ed
lear
n
in
g
r
es
ea
r
ch
.
SE
in
b
len
d
ed
lear
n
i
n
g
is
in
f
lu
en
ce
d
b
y
m
u
ltip
le
in
ter
r
elate
d
f
ac
to
r
s
,
in
clu
d
in
g
SQ
,
lear
n
in
g
co
n
ten
t,
in
s
tr
u
ctio
n
al
s
u
p
p
o
r
t,
an
d
IN
.
Prio
r
r
esear
ch
em
p
h
asizes
th
at
en
g
a
g
em
en
t
em
er
g
es
f
r
o
m
th
e
d
y
n
am
ic
IN
am
o
n
g
s
tu
d
en
ts
,
in
s
tr
u
cto
r
s
,
a
n
d
d
ig
ital
lear
n
in
g
e
n
v
ir
o
n
m
e
n
ts
r
ath
er
th
an
f
r
o
m
tech
n
o
lo
g
y
alo
n
e,
an
d
th
at
lear
n
in
g
p
latf
o
r
m
s
c
o
n
tr
ib
u
te
to
en
g
a
g
em
en
t
o
n
ly
wh
en
th
e
y
ar
e
m
ea
n
in
g
f
u
lly
in
teg
r
ated
in
to
in
s
tr
u
ctio
n
al
p
r
ac
tices
[
8
]
,
[
2
6
]
.
Acc
o
r
d
in
g
ly
,
th
is
s
tu
d
y
ad
o
p
ts
an
in
te
g
r
a
ted
f
r
am
ewo
r
k
t
o
ex
am
i
n
e
h
o
w
SQ,
C
Q,
T
S,
an
d
I
N
ar
e
ass
o
ciate
d
with
SE
.
PU
is
co
n
ce
p
tu
alize
d
as
a
k
e
y
m
ed
iatin
g
m
ec
h
an
is
m
lin
k
in
g
b
len
d
ed
lear
n
in
g
f
ac
to
r
s
to
en
g
a
g
em
en
t
o
u
tco
m
es.
T
h
is
f
r
am
ewo
r
k
en
ab
le
s
a
m
o
r
e
co
m
p
r
eh
e
n
s
iv
e
u
n
d
er
s
tan
d
in
g
o
f
h
o
w
b
len
d
ed
lear
n
in
g
e
n
v
ir
o
n
m
en
t
s
s
h
ap
e
s
tu
d
en
ts
’
en
g
ag
e
m
en
t
ex
p
er
ien
ce
s
.
2
.
3
.
Sy
s
t
e
m
qu
a
lity
a
nd
co
nt
ent
qu
a
lity
2
.
3
.
1
.
Sy
s
t
em
qu
a
lity
SQ
r
ef
er
s
to
th
e
ex
ten
t
to
wh
ich
a
LMS
is
r
eliab
le,
ea
s
y
to
u
s
e,
ac
ce
s
s
ib
le,
an
d
tech
n
ically
f
u
n
ctio
n
al.
W
ith
in
th
e
in
f
o
r
m
atio
n
s
y
s
tem
s
s
u
cc
ess
m
o
d
el
,
SQ
is
r
eg
a
r
d
ed
as
a
k
ey
f
ac
to
r
s
h
ap
in
g
u
s
er
s
’
p
er
ce
p
tio
n
s
a
n
d
e
x
p
er
ien
ce
s
wh
en
in
ter
ac
tin
g
with
in
f
o
r
m
a
tio
n
s
y
s
tem
s
[
3
]
.
I
n
ed
u
ca
tio
n
al
s
ettin
g
s
,
h
ig
h
SQ
f
ac
ilit
ates
ef
f
icien
t
ac
ce
s
s
to
lear
n
in
g
m
ate
r
ials
an
d
s
m
o
o
th
n
a
v
ig
atio
n
o
f
lear
n
in
g
p
l
atf
o
r
m
s
,
wh
ic
h
ar
e
im
p
o
r
tan
t c
o
n
d
itio
n
s
f
o
r
s
tu
d
e
n
ts
’
s
u
s
tain
ed
p
ar
ticip
atio
n
in
o
n
lin
e
an
d
b
len
d
ed
lear
n
i
n
g
ac
tiv
ities
.
E
m
p
ir
ical
ev
id
e
n
ce
s
u
g
g
ests
th
at
SQ
is
p
o
s
itiv
ely
ass
o
ciate
d
with
s
tu
d
en
ts
’
PU
o
f
lear
n
i
n
g
s
y
s
tem
s
an
d
th
eir
o
v
e
r
all
lear
n
in
g
ex
p
er
ien
ce
s
.
W
h
en
lear
n
in
g
s
y
s
tem
s
f
u
n
ctio
n
ef
f
ec
tiv
ely
an
d
s
u
p
p
o
r
t
ac
ad
em
i
c
task
s
,
s
tu
d
en
ts
ar
e
m
o
r
e
lik
ely
to
p
er
ce
iv
e
th
em
as
b
e
n
ef
ic
ial
f
o
r
th
eir
lea
r
n
in
g
p
e
r
f
o
r
m
an
ce
[
2
]
,
[
4
]
,
[
1
7
]
.
I
n
ad
d
itio
n
,
r
elia
b
le
an
d
u
s
er
-
f
r
ien
d
ly
s
y
s
tem
s
m
ay
r
ed
u
ce
tech
n
ical
b
ar
r
ier
s
an
d
s
u
p
p
o
r
t
co
n
tin
u
ed
p
ar
ticip
atio
n
in
b
len
d
ed
lear
n
in
g
ac
tiv
ities
,
wh
ich
is
clo
s
ely
r
elate
d
to
h
ig
h
e
r
lev
els o
f
SE
.
Acc
o
r
d
in
g
ly
,
SQ
is
ex
p
ec
ted
to
b
e
p
o
s
itiv
ely
ass
o
ciate
d
with
PU
an
d
SE
.
−
H1
:
SQ
p
o
s
itiv
ely
in
f
lu
en
ce
s
PU
.
−
H2
:
SQ
p
o
s
itiv
ely
in
f
lu
en
ce
s
SE
.
2
.
3
.
2
.
Co
nte
nt
q
ua
lity
CQ
r
e
f
e
r
s
t
o
t
h
e
e
x
t
e
n
t
t
o
w
h
ic
h
l
e
a
r
n
i
n
g
m
a
t
e
r
ia
l
s
a
r
e
a
c
c
u
r
a
t
e
,
r
e
l
e
v
a
n
t
,
w
e
ll
s
t
r
u
c
t
u
r
e
d
,
an
d
a
l
i
g
n
e
d
w
i
t
h
l
e
a
r
n
i
n
g
o
b
j
e
c
ti
v
e
s
.
I
n
b
le
n
d
e
d
l
e
a
r
n
i
n
g
c
o
n
t
e
x
t
s
,
CQ
p
l
a
y
s
a
n
i
m
p
o
r
t
a
n
t
r
o
l
e
i
n
s
u
p
p
o
r
t
i
n
g
l
e
a
r
n
i
n
g
,
a
s
s
tu
d
en
ts
r
e
l
y
h
e
a
v
i
l
y
o
n
d
i
g
i
t
a
l
m
a
t
e
r
i
a
l
s
o
u
ts
i
d
e
t
h
e
c
l
a
s
s
r
o
o
m
.
W
i
t
h
i
n
t
h
e
i
n
f
o
r
m
a
t
i
o
n
s
y
s
te
m
s
s
u
c
c
es
s
m
o
d
e
l
,
CQ
is
c
o
n
s
i
d
e
r
e
d
a
k
e
y
f
a
c
t
o
r
s
h
a
p
i
n
g
u
s
e
r
s
’
e
v
a
l
u
at
i
o
n
s
o
f
s
y
s
t
e
m
v
a
l
u
e
a
n
d
e
f
f
e
c
t
i
v
e
n
es
s
[
3
]
.
E
m
p
ir
ical
s
tu
d
ies
s
u
g
g
est
th
a
t
h
ig
h
-
q
u
ality
lear
n
in
g
co
n
te
n
t
is
p
o
s
itiv
ely
ass
o
ciate
d
with
s
tu
d
en
ts
’
PU
o
f
lear
n
in
g
s
y
s
tem
s
,
p
ar
ti
cu
lar
ly
wh
e
n
m
ate
r
ials
ar
e
cl
ea
r
,
u
p
to
d
ate,
an
d
alig
n
e
d
with
lear
n
in
g
g
o
als
[
2
]
,
[
4
]
.
W
ell
-
d
esig
n
ed
co
n
t
en
t
h
as
also
b
ee
n
lin
k
e
d
t
o
p
o
s
itiv
e
lear
n
in
g
ex
p
er
ie
n
ce
s
an
d
s
u
s
tain
ed
en
g
ag
em
e
n
t,
as
s
tu
d
en
ts
ar
e
m
o
r
e
lik
ely
t
o
in
v
est
ef
f
o
r
t
a
n
d
r
em
ai
n
in
v
o
lv
ed
in
lear
n
i
n
g
ac
tiv
ities
wh
en
lear
n
in
g
m
ate
r
ials
ar
e
p
er
ce
i
v
ed
as
r
elev
a
n
t
an
d
m
ea
n
in
g
f
u
l
[
1
7
]
.
Acc
o
r
d
i
n
g
ly
,
CQ
is
ex
p
ec
ted
to
b
e
p
o
s
itiv
ely
ass
o
ciate
d
with
PU
an
d
SE
in
b
le
n
d
ed
lea
r
n
in
g
en
v
ir
o
n
m
e
n
ts
.
−
H3
:
CQ
p
o
s
itiv
ely
in
f
lu
en
ce
s
PU
.
−
H4
:
CQ
p
o
s
itiv
ely
in
f
lu
en
ce
s
SE
.
2
.
4
.
T
ea
cher
s
up
po
rt
a
nd
in
t
er
a
ct
io
n
2
.
4
.
1
.
T
ea
cher
s
up
po
rt
TS
r
ef
er
s
to
th
e
ex
ten
t
to
wh
ich
in
s
tr
u
cto
r
s
p
r
o
v
i
d
e
g
u
id
an
ce
,
f
ee
d
b
ac
k
,
en
c
o
u
r
a
g
em
en
t,
an
d
ac
ad
em
ic
ass
is
tan
ce
th
r
o
u
g
h
o
u
t
th
e
lear
n
in
g
p
r
o
ce
s
s
.
I
n
b
len
d
e
d
lear
n
in
g
en
v
ir
o
n
m
en
ts
,
TS
p
lay
s
a
n
im
p
o
r
tan
t
r
o
le
i
n
co
n
n
ec
tin
g
f
ac
e
-
to
-
f
ac
e
a
n
d
o
n
lin
e
co
m
p
o
n
en
ts
a
n
d
s
u
p
p
o
r
tin
g
s
tu
d
en
ts
’
n
av
ig
atio
n
o
f
lear
n
in
g
ac
tiv
ities
.
I
t
h
as
also
b
ee
n
co
n
s
is
ten
tly
ass
o
ciate
d
with
h
ig
h
er
lev
els
o
f
SE
an
d
p
o
s
itiv
e
lear
n
in
g
o
u
tco
m
es
[
1
1
]
.
B
ey
o
n
d
d
ir
ec
t
in
s
tr
u
ctio
n
al
r
o
les,
TS
al
s
o
s
h
ap
es
s
tu
d
en
ts
’
p
er
ce
p
tio
n
s
o
f
lear
n
in
g
tech
n
o
lo
g
ies
b
y
in
f
lu
en
cin
g
h
o
w
d
ig
ital
to
o
ls
ar
e
in
teg
r
ated
i
n
to
teac
h
in
g
p
r
ac
tices.
E
m
p
i
r
ical
s
tu
d
ies
s
u
g
g
est
th
at
TS
is
p
o
s
itiv
ely
ass
o
ciate
d
with
SE
th
r
o
u
g
h
tech
n
o
lo
g
y
-
r
elat
ed
p
er
ce
p
tio
n
s
an
d
m
o
tiv
at
io
n
al
f
ac
to
r
s
an
d
co
n
tr
ib
u
tes
to
s
tu
d
en
ts
’
co
n
f
id
en
ce
an
d
p
o
s
itiv
e
ev
alu
ati
o
n
s
o
f
lear
n
in
g
s
y
s
tem
s
in
o
n
lin
e
an
d
b
len
d
e
d
co
n
tex
ts
[
1
0
]
,
[
2
7
]
.
R
ec
en
t
r
esear
ch
es
[
1
4
]
,
[
1
5
]
,
[
2
8
]
–
[
3
0
]
f
u
r
th
er
h
ig
h
lig
h
ts
th
e
c
o
n
tin
u
e
d
im
p
o
r
tan
ce
o
f
TS
in
in
f
o
r
m
atio
n
an
d
co
m
m
u
n
i
ca
tio
n
s
tech
n
o
l
o
g
y
(
I
C
T
)
-
s
u
p
p
o
r
ted
an
d
AI
-
ass
is
ted
lear
n
i
n
g
e
n
v
ir
o
n
m
en
ts
,
alig
n
in
g
with
th
e
C
o
I
f
r
am
e
wo
r
k
,
wh
ich
e
m
p
h
asizes
teac
h
in
g
p
r
esen
ce
as
a
co
r
e
ele
m
en
t
o
f
m
ea
n
in
g
f
u
l
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t
J
E
v
al
&
R
es E
d
u
c
I
SS
N:
2252
-
8
8
2
2
B
len
d
ed
lea
r
n
in
g
fa
cto
r
s
in
flu
en
cin
g
s
tu
d
en
t e
n
g
a
g
eme
n
t in
h
ig
h
er e
d
u
c
a
tio
n
(
La
i Th
i Th
u
Th
u
y
)
1481
lear
n
in
g
e
x
p
er
ie
n
ce
s
.
Acc
o
r
d
in
g
ly
,
TS
is
ex
p
ec
ted
to
b
e
p
o
s
itiv
ely
ass
o
ciate
d
with
PU
an
d
SE
i
n
b
le
n
d
ed
lear
n
in
g
en
v
ir
o
n
m
en
ts
.
−
H5
:
TS
p
o
s
itiv
ely
in
f
lu
en
ce
s
PU
.
−
H6
:
TS
p
o
s
itiv
ely
in
f
lu
en
ce
s
SE
.
2
.
4
.
2
.
I
nte
ra
ct
io
n
IN
r
ef
er
s
to
th
e
ex
ten
t
an
d
q
u
ality
o
f
ex
ch
an
g
es
am
o
n
g
s
tu
d
en
ts
,
in
s
tr
u
cto
r
s
,
an
d
lear
n
in
g
m
ater
ials
with
in
a
lear
n
in
g
en
v
ir
o
n
m
en
t
an
d
o
cc
u
r
s
th
r
o
u
g
h
b
o
th
f
a
ce
-
to
-
f
ac
e
a
n
d
o
n
lin
e
c
o
m
m
u
n
icatio
n
in
b
len
d
e
d
lear
n
in
g
co
n
te
x
ts
.
I
t
is
w
id
ely
r
ec
o
g
n
ized
as
a
co
r
e
elem
e
n
t
s
u
p
p
o
r
tin
g
lear
n
in
g
p
r
o
ce
s
s
es
in
tech
n
o
lo
g
y
-
en
h
an
ce
d
ed
u
ca
tio
n
a
n
d
is
cl
o
s
ely
r
elate
d
to
s
tu
d
en
ts
’
lea
r
n
in
g
e
x
p
er
ie
n
ce
s
.
I
n
b
len
d
e
d
lear
n
in
g
s
ettin
g
s
,
IN
p
lay
s
a
p
ar
ticu
lar
l
y
im
p
o
r
tan
t r
o
le
in
c
o
n
n
ec
tin
g
p
ed
ag
o
g
ical
p
r
ac
tices with
d
ig
ital le
ar
n
in
g
e
n
v
ir
o
n
m
en
ts
.
Prio
r
r
esear
ch
s
u
g
g
ests
th
at
m
ea
n
in
g
f
u
l
IN
is
ass
o
ciate
d
with
s
tu
d
en
ts
’
co
g
n
itiv
e
in
v
o
lv
em
en
t,
m
o
tiv
atio
n
,
a
n
d
e
n
g
ag
em
en
t
b
y
f
ac
ilit
atin
g
k
n
o
wled
g
e
co
n
s
tr
u
ctio
n
an
d
s
o
cial
co
n
n
ec
t
io
n
.
Su
p
p
o
r
tiv
e
an
d
s
tr
u
ctu
r
ed
IN
m
ay
also
s
atis
f
y
s
tu
d
en
ts
’
n
ee
d
s
f
o
r
r
ela
ted
n
ess
an
d
co
m
p
eten
ce
,
w
h
ich
ar
e
im
p
o
r
tan
t
co
n
d
itio
n
s
f
o
r
s
u
s
tain
ed
en
g
a
g
em
en
t
[
1
2
]
–
[
1
5
]
.
R
ec
en
t
r
ev
iews
f
u
r
th
er
i
n
d
icate
th
at
IN
s
u
p
p
o
r
ted
b
y
d
ig
ital
tech
n
o
lo
g
ies
is
m
o
s
t
ef
f
ec
tiv
e
wh
en
it
p
r
o
m
o
tes
co
llab
o
r
a
tio
n
an
d
p
u
r
p
o
s
ef
u
l
lear
n
in
g
ac
tiv
ities
in
h
ig
h
er
ed
u
ca
tio
n
[
3
1
]
.
I
n
b
len
d
ed
l
ea
r
n
in
g
en
v
ir
o
n
m
en
ts
,
IN
m
ay
also
s
h
ap
e
s
tu
d
en
ts
’
p
e
r
c
ep
tio
n
s
o
f
lear
n
in
g
tech
n
o
lo
g
ies
b
y
s
u
p
p
o
r
tin
g
co
m
m
u
n
icatio
n
an
d
co
llab
o
r
atio
n
.
T
h
r
o
u
g
h
th
ese
p
r
o
ce
s
s
es,
IN
is
ex
p
ec
ted
to
b
e
p
o
s
itiv
ely
ass
o
ciate
d
with
PU
an
d
,
in
d
ir
ec
tly
,
with
SE
.
−
H7
:
IN
p
o
s
itiv
ely
in
f
lu
e
n
ce
s
PU
.
−
H8
:
IN
p
o
s
itiv
ely
in
f
lu
e
n
ce
s
SE
.
2
.
5
.
P
er
ce
i
v
ed
us
ef
uln
es
s
a
s
a
m
edia
t
ing
v
a
ria
ble
PU
r
ef
er
s
to
th
e
ex
ten
t
to
wh
ich
in
d
iv
id
u
als
b
eliev
e
th
at
u
s
in
g
a
s
y
s
tem
en
h
an
ce
s
th
eir
p
er
f
o
r
m
a
n
ce
an
d
is
a
ce
n
tr
al
co
n
s
tr
u
ct
in
th
e
T
AM
[
1
6
]
.
I
n
e
d
u
ca
tio
n
al
c
o
n
tex
ts
,
PU
r
e
f
lects
s
tu
d
en
ts
’
b
elief
s
th
at
lear
n
in
g
tech
n
o
lo
g
ies
an
d
d
i
g
ital
p
latf
o
r
m
s
ef
f
ec
tiv
ely
s
u
p
p
o
r
t
th
ei
r
lear
n
in
g
p
r
o
ce
s
s
es
an
d
ac
a
d
em
ic
p
er
f
o
r
m
a
n
ce
.
Prio
r
r
esear
ch
in
o
n
lin
e
an
d
b
len
d
ed
lear
n
in
g
s
u
g
g
ests
th
at
PU
is
p
o
s
itiv
ely
ass
o
ciate
d
with
lear
n
in
g
-
r
elate
d
o
u
tco
m
es
s
u
ch
as
s
atis
f
ac
tio
n
,
co
n
tin
u
ed
s
y
s
tem
u
s
e,
an
d
SE
.
Stu
d
en
ts
wh
o
p
er
ce
iv
e
l
ea
r
n
in
g
s
y
s
tem
s
as
u
s
ef
u
l
ar
e
m
o
r
e
lik
el
y
to
in
v
e
s
t
ef
f
o
r
t
an
d
ac
tiv
ely
p
ar
ticip
ate
in
lear
n
in
g
ac
tiv
ities
[
1
7
]
,
[
1
8
]
.
Acc
o
r
d
in
g
ly
,
PU
is
ex
p
ec
ted
to
b
e
p
o
s
itiv
ely
ass
o
ciate
d
with
SE
.
T
h
u
s
,
th
e
h
y
p
o
t
h
es
i
s
was p
r
o
p
o
s
ed
as:
−
H9
:
PU
p
o
s
itiv
ely
in
f
lu
en
ce
s
SE.
B
ey
o
n
d
its
d
ir
ec
t
ass
o
ciatio
n
with
en
g
ag
e
m
en
t,
PU
m
a
y
f
u
n
ctio
n
as
a
k
ey
m
ed
iatin
g
m
ec
h
an
is
m
th
r
o
u
g
h
wh
ich
b
len
d
ed
lear
n
i
n
g
f
ac
to
r
s
s
h
ap
e
SE
.
SQ
a
n
d
CQ
in
f
lu
en
ce
s
tu
d
en
ts
’
e
x
p
er
i
en
ce
s
with
lear
n
in
g
p
latf
o
r
m
s
a
n
d
m
ater
ials
,
wh
il
e
TS
an
d
IN
s
ig
n
al
h
o
w
lear
n
in
g
tech
n
o
lo
g
ies
c
o
n
tr
ib
u
te
to
lear
n
in
g
g
o
als
an
d
ac
ad
em
ic
p
er
f
o
r
m
a
n
ce
.
T
h
r
o
u
g
h
th
ese
p
r
o
ce
s
s
es,
s
tu
d
en
t
s
m
ay
d
ev
el
o
p
m
o
r
e
f
a
v
o
r
a
b
le
ev
alu
atio
n
s
o
f
lear
n
in
g
s
y
s
tem
s
,
wh
ich
ar
e
r
e
f
lecte
d
in
h
ig
h
er
PU
[
2
]
,
[
3
]
,
[
1
0
]
.
E
m
p
ir
ical
ev
i
d
en
ce
f
u
r
t
h
er
i
n
d
icate
s
th
at
tech
n
o
lo
g
y
-
r
ela
ted
p
er
ce
p
tio
n
s
f
r
eq
u
e
n
tly
m
ed
iate
th
e
r
elatio
n
s
h
ip
s
b
etwe
en
in
s
tr
u
ctio
n
al
o
r
e
n
v
ir
o
n
m
en
tal
f
ac
to
r
s
an
d
en
g
ag
em
e
n
t
-
r
el
ated
o
u
tco
m
es
in
tech
n
o
lo
g
y
-
en
h
an
ce
d
l
e
a
r
n
i
n
g
c
o
n
t
e
x
t
s
.
B
u
ild
in
g
o
n
t
h
i
s
p
er
s
p
ec
tiv
e
,
th
is
s
tu
d
y
co
n
ce
p
tu
ali
ze
s
PU
a
s
a
ce
n
tr
al
m
e
d
i
a
t
i
n
g
m
e
c
h
a
n
is
m
l
i
n
k
i
n
g
SQ,
C
Q,
T
S,
an
d
I
N
to
SE
.
A
c
c
o
r
d
i
n
g
l
y
,
t
h
e
m
e
d
i
a
t
i
o
n
h
y
p
o
th
e
s
e
s
ar
e
p
r
o
p
o
s
ed
:
−
H1
0
:
PU
m
ed
iates th
e
r
elatio
n
s
h
ip
b
etwe
en
SQ
an
d
SE
.
−
H1
1
:
PU
m
ed
iates th
e
r
elatio
n
s
h
ip
b
etwe
en
CQ
an
d
SE
.
−
H1
2
:
PU
m
ed
iates th
e
r
elatio
n
s
h
ip
b
etwe
en
TS
an
d
SE
.
−
H1
3
:
PU
m
ed
iates th
e
r
elatio
n
s
h
ip
b
etwe
en
IN
an
d
SE
.
3.
M
E
T
H
O
D
3
.
1
.
Resea
rc
h desi
g
n
T
h
is
s
tu
d
y
em
p
lo
y
ed
a
q
u
an
t
itativ
e,
cr
o
s
s
-
s
ec
tio
n
al
r
esear
ch
d
esig
n
to
ex
am
in
e
th
e
r
el
atio
n
s
h
ip
s
am
o
n
g
b
len
d
ed
lear
n
in
g
f
ac
to
r
s
,
PU
,
an
d
SE
in
h
ig
h
er
ed
u
c
atio
n
.
T
h
e
r
esear
c
h
f
o
c
u
s
ed
o
n
ass
o
ciativ
e
r
ath
er
th
an
ca
u
s
al
r
elatio
n
s
h
ip
s
an
d
co
llected
d
ata
u
s
in
g
a
s
tr
u
ctu
r
ed
q
u
esti
o
n
n
air
e.
T
h
e
p
r
o
p
o
s
ed
r
esear
ch
m
o
d
el
was
test
ed
u
s
in
g
PLS
-
SEM
,
wh
ich
is
ap
p
r
o
p
r
iate
f
o
r
th
e
o
r
y
d
e
v
elo
p
m
e
n
t
an
d
p
r
ed
ictio
n
-
o
r
ien
te
d
r
esear
ch
m
o
d
els
[
3
2
]
.
3
.
2
.
P
a
rt
icipa
nts
a
nd
da
t
a
c
o
llect
io
n
T
h
e
s
tu
d
y
s
am
p
le
co
n
s
is
ted
o
f
u
n
d
e
r
g
r
ad
u
ate
s
tu
d
en
ts
f
r
o
m
s
ev
er
al
p
u
b
lic
u
n
iv
er
s
ities
in
Vietn
am
,
in
clu
d
in
g
T
h
u
o
n
g
m
ai
Un
i
v
er
s
ity
,
Natio
n
al
E
co
n
o
m
ics Un
iv
er
s
ity
,
an
d
Vietn
am
Natio
n
al
Un
iv
er
s
ity
,
wh
o
h
a
d
ex
p
er
ien
ce
with
b
le
n
d
ed
lea
r
n
in
g
s
u
p
p
o
r
ted
b
y
LMS
.
Data
wer
e
co
llected
th
r
o
u
g
h
an
o
n
lin
e
s
u
r
v
ey
ad
m
in
is
ter
ed
d
u
r
i
n
g
th
e
ac
a
d
e
m
ic
s
em
ester
.
Af
ter
d
ata
s
cr
ee
n
in
g
,
a
to
tal
o
f
2
8
8
v
alid
r
esp
o
n
s
es
wer
e
r
etain
ed
f
o
r
an
al
y
s
is
,
wh
ich
is
co
n
s
id
er
ed
ad
eq
u
ate
f
o
r
PLS
-
SEM
an
aly
s
is
[
3
2
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
2
2
I
n
t
J
E
v
al
&
R
es E
d
u
c
,
Vo
l
.
15
,
No
.
2
,
Ap
r
il
20
2
6
:
1
4
7
8
-
1
4
8
7
1482
3
.
3
.
M
ea
s
urem
ent
i
ns
t
rum
ent
s
All
co
n
s
tr
u
cts
in
th
e
r
esear
ch
m
o
d
el
wer
e
m
ea
s
u
r
e
d
u
s
in
g
p
r
ev
io
u
s
ly
v
alid
ated
s
ca
les
ad
ap
ted
to
th
e
b
len
d
ed
lear
n
in
g
c
o
n
tex
t
.
SQ,
C
Q,
T
S,
I
N,
PU,
an
d
SE
wer
e
m
ea
s
u
r
ed
u
s
in
g
m
u
ltip
le
item
s
r
ated
o
n
a
5
-
p
o
in
t
L
ik
er
t
s
ca
le,
r
an
g
in
g
f
r
o
m
1
(
s
tr
o
n
g
ly
d
is
ag
r
ee
)
to
5
(
s
tr
o
n
g
ly
ag
r
ee
)
.
Min
o
r
wo
r
d
in
g
ad
ju
s
tm
en
ts
wer
e
m
ad
e
to
en
s
u
r
e
clar
ity
an
d
co
n
tex
t
u
al
r
elev
an
ce
f
o
r
Vietn
am
ese
h
i
g
h
er
e
d
u
ca
tio
n
.
T
h
e
m
ea
s
u
r
e
m
en
t
item
s
an
d
th
ei
r
s
o
u
r
ce
s
ar
e
p
r
esen
ted
in
T
ab
le
1
.
T
ab
le
1
.
C
o
n
s
tr
u
ct
m
ea
s
u
r
em
e
n
t item
s
an
d
s
o
u
r
ce
s
F
a
c
t
o
r
s
I
t
e
ms
I
t
e
m d
e
t
a
i
l
S
o
u
r
c
e
SQ
S
Q
1
LM
S
i
s
e
a
s
y
t
o
u
s
e
[
2
]
–
[
4
]
S
Q
2
LM
S
i
s re
l
i
a
b
l
e
a
n
d
f
u
n
c
t
i
o
n
s
p
r
o
p
e
r
l
y
S
Q
3
LM
S
i
s we
l
l
st
r
u
c
t
u
r
e
d
a
n
d
e
a
s
y
t
o
n
a
v
i
g
a
t
e
S
Q
4
LM
S
r
e
sp
o
n
d
s
q
u
i
c
k
l
y
w
h
e
n
I
u
se
i
t
CQ
C
Q
1
Le
a
r
n
i
n
g
ma
t
e
r
i
a
l
s
o
n
t
h
e
L
M
S
a
r
e
c
l
e
a
r
a
n
d
u
n
d
e
r
s
t
a
n
d
a
b
l
e
[
2
]
–
[
4
]
C
Q
2
Le
a
r
n
i
n
g
c
o
n
t
e
n
t
i
s
r
e
l
e
v
a
n
t
t
o
t
h
e
c
o
u
r
se
o
b
j
e
c
t
i
v
e
s
C
Q
3
Le
a
r
n
i
n
g
ma
t
e
r
i
a
l
s
a
r
e
u
p
t
o
d
a
t
e
C
Q
4
C
o
n
t
e
n
t
p
r
o
v
i
d
e
d
o
n
t
h
e
L
M
S
s
u
p
p
o
r
t
s my
l
e
a
r
n
i
n
g
n
e
e
d
s
TS
TS1
Th
e
i
n
st
r
u
c
t
o
r
p
r
o
v
i
d
e
s
t
i
m
e
l
y
f
e
e
d
b
a
c
k
t
h
r
o
u
g
h
t
h
e
L
M
S
[
1
0
]
,
[
1
1
]
,
[
2
7
]
TS2
Th
e
i
n
st
r
u
c
t
o
r
c
l
e
a
r
l
y
e
x
p
l
a
i
n
s
l
e
a
r
n
i
n
g
a
c
t
i
v
i
t
i
e
s
a
n
d
e
x
p
e
c
t
a
t
i
o
n
s
TS3
Th
e
i
n
st
r
u
c
t
o
r
e
n
c
o
u
r
a
g
e
s st
u
d
e
n
t
p
a
r
t
i
c
i
p
a
t
i
o
n
i
n
o
n
l
i
n
e
a
c
t
i
v
i
t
i
e
s
TS4
Th
e
i
n
st
r
u
c
t
o
r
su
p
p
o
r
t
s st
u
d
e
n
t
s
w
h
e
n
d
i
f
f
i
c
u
l
t
i
e
s a
r
i
se
IN
I
N
1
I
f
r
e
q
u
e
n
t
l
y
i
n
t
e
r
a
c
t
w
i
t
h
o
t
h
e
r
s
t
u
d
e
n
t
s t
h
r
o
u
g
h
t
h
e
L
M
S
[
1
2
]
,
[
1
4
]
,
[
1
5
]
I
N
2
O
n
l
i
n
e
d
i
sc
u
ss
i
o
n
s
h
e
l
p
m
e
b
e
t
t
e
r
u
n
d
e
r
st
a
n
d
t
h
e
c
o
u
r
s
e
c
o
n
t
e
n
t
I
N
3
I
f
e
e
l
c
o
mf
o
r
t
a
b
l
e
i
n
t
e
r
a
c
t
i
n
g
w
i
t
h
i
n
s
t
r
u
c
t
o
r
s
o
n
l
i
n
e
I
N
4
IN
t
h
r
o
u
g
h
t
h
e
L
M
S
e
n
h
a
n
c
e
s m
y
l
e
a
r
n
i
n
g
e
x
p
e
r
i
e
n
c
e
PU
P
U
1
U
si
n
g
t
h
e
L
M
S
i
mp
r
o
v
e
s
my
l
e
a
r
n
i
n
g
p
e
r
f
o
r
ma
n
c
e
[
1
6
]
–
[
1
8
]
P
U
2
Th
e
L
M
S
h
e
l
p
s
me
l
e
a
r
n
mo
r
e
e
f
f
e
c
t
i
v
e
l
y
P
U
3
Th
e
L
M
S
e
n
h
a
n
c
e
s m
y
l
e
a
r
n
i
n
g
p
r
o
d
u
c
t
i
v
i
t
y
P
U
4
O
v
e
r
a
l
l
,
t
h
e
L
M
S
i
s
u
s
e
f
u
l
f
o
r
m
y
l
e
a
r
n
i
n
g
SE
S
E1
I
a
c
t
i
v
e
l
y
p
a
r
t
i
c
i
p
a
t
e
i
n
l
e
a
r
n
i
n
g
a
c
t
i
v
i
t
i
e
s
[
5
]
–
[
7
]
S
E2
I
a
m mo
t
i
v
a
t
e
d
t
o
e
n
g
a
g
e
i
n
t
h
i
s
c
o
u
r
s
e
S
E3
I
p
u
t
e
f
f
o
r
t
i
n
t
o
l
e
a
r
n
i
n
g
t
h
e
c
o
u
r
se
m
a
t
e
r
i
a
l
s
S
E4
I
a
m i
n
t
e
r
e
s
t
e
d
i
n
t
h
e
l
e
a
r
n
i
n
g
a
c
t
i
v
i
t
i
e
s o
f
t
h
i
s
c
o
u
r
s
e
S
E5
I
a
m a
c
t
i
v
e
l
y
i
n
v
o
l
v
e
d
i
n
t
h
e
l
e
a
r
n
i
n
g
p
r
o
c
e
ss
3
.
4
.
Da
t
a
a
na
ly
s
is
pro
ce
du
r
e
Data
an
aly
s
is
was
co
n
d
u
cte
d
u
s
in
g
Sm
a
r
tPLS.
Fo
llo
win
g
estab
lis
h
ed
PLS
-
SEM
g
u
id
elin
es,
th
e
an
aly
s
is
p
r
o
ce
ed
e
d
in
t
wo
s
tag
es.
First,
th
e
m
ea
s
u
r
em
en
t
m
o
d
el
was
ass
ess
ed
in
ter
m
s
o
f
in
ter
n
al
co
n
s
is
ten
cy
r
eliab
ilit
y
,
co
n
v
e
r
g
en
t
v
alid
ity
,
an
d
d
is
cr
im
in
an
t
v
alid
ity
.
Seco
n
d
,
th
e
s
tr
u
ctu
r
al
m
o
d
el
was
ev
alu
ated
to
ex
am
in
e
h
y
p
o
th
e
s
ized
r
elatio
n
s
h
ip
s
,
in
clu
d
i
n
g
d
ir
ec
t
an
d
m
ed
iatin
g
ef
f
ec
ts
o
f
PU
.
B
o
o
ts
tr
ap
p
in
g
p
r
o
ce
d
u
r
es
wer
e
em
p
lo
y
ed
to
ass
es
s
th
e
s
ig
n
if
ican
ce
o
f
p
a
th
co
ef
f
icien
ts
[
3
2
]
.
C
o
m
m
o
n
m
eth
o
d
b
ias
was
ass
es
s
ed
u
s
in
g
th
e
f
u
ll
co
llin
e
ar
ity
v
ar
ian
ce
in
f
latio
n
f
ac
to
r
(
VI
F)
ap
p
r
o
ac
h
.
All
f
u
ll
co
lli
n
ea
r
ity
VI
F
v
alu
es
wer
e
b
elo
w
th
e
r
ec
o
m
m
e
n
d
e
d
th
r
esh
o
ld
o
f
3
.
3
,
in
d
icatin
g
th
at
co
m
m
o
n
m
eth
o
d
b
ias
is
u
n
lik
ely
to
th
r
ea
ten
th
e
v
alid
ity
o
f
th
e
r
esu
lts
[
3
3
]
.
4.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
4
.
1
.
Resul
t
s
4
.
1
.
1
.
M
ea
s
urem
ent
m
o
del a
s
s
es
s
m
ent
T
h
e
m
ea
s
u
r
em
en
t
m
o
d
el
was
ev
alu
ated
in
ter
m
s
o
f
in
ter
n
a
l
co
n
s
is
ten
cy
r
eliab
ilit
y
an
d
c
o
n
v
er
g
en
t
v
alid
ity
.
As
s
h
o
wn
in
T
ab
le
2
,
all
co
n
s
tr
u
cts
in
d
icate
s
atis
f
ac
to
r
y
r
eliab
ilit
y
,
with
C
r
o
n
b
ac
h
’
s
alp
h
a
v
al
u
es
r
an
g
in
g
f
r
o
m
0
.
8
2
3
t
o
0
.
9
2
9
a
n
d
co
m
p
o
s
ite
r
eliab
ilit
y
(
C
R
)
v
alu
es
ex
ce
ed
in
g
th
e
r
ec
o
m
m
en
d
ed
th
r
esh
o
ld
o
f
0
.
7
0
.
C
o
n
v
e
r
g
en
t
v
alid
ity
is
also
s
u
p
p
o
r
ted
,
as
th
e
a
v
er
ag
e
v
ar
ian
ce
ex
tr
ac
te
d
(
AVE
)
v
al
u
e
s
f
o
r
all
co
n
s
tr
u
cts
r
an
g
e
f
r
o
m
0
.
6
5
4
to
0
.
7
8
0
,
ex
ce
ed
in
g
th
e
m
in
im
u
m
cr
iter
io
n
o
f
0
.
5
0
.
T
h
ese
r
esu
lts
s
u
g
g
est
th
at
th
e
m
ea
s
u
r
em
en
t
s
ca
les
ex
h
ib
it
ad
eq
u
ate
r
eliab
ilit
y
an
d
c
o
n
v
er
g
en
t
v
alid
ity
,
p
r
o
v
id
in
g
a
s
o
u
n
d
b
asis
f
o
r
s
u
b
s
eq
u
en
t stru
ctu
r
al
m
o
d
el
a
n
aly
s
is
.
Dis
cr
im
in
an
t
v
alid
ity
was
as
s
ess
ed
u
s
in
g
th
e
h
eter
o
tr
ait
–
m
o
n
o
tr
ait
(
HT
MT
)
r
atio
.
As
s
h
o
wn
in
T
ab
le
3
,
all
HT
MT
v
alu
es
ar
e
b
elo
w
th
e
r
ec
o
m
m
en
d
e
d
th
r
esh
o
ld
o
f
0
.
8
5
,
i
n
d
icatin
g
ad
e
q
u
ate
d
is
cr
im
in
an
t
v
alid
ity
am
o
n
g
th
e
c
o
n
s
tr
u
cts.
T
ak
en
to
g
et
h
er
,
th
e
r
esu
lts
co
n
f
ir
m
th
at
th
e
m
ea
s
u
r
em
e
n
t
m
o
d
el
s
atis
f
ies
th
e
r
eq
u
ir
ed
r
eliab
ilit
y
an
d
v
alid
it
y
cr
iter
ia
f
o
r
PLS
-
SEM
an
aly
s
is
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t
J
E
v
al
&
R
es E
d
u
c
I
SS
N:
2252
-
8
8
2
2
B
len
d
ed
lea
r
n
in
g
fa
cto
r
s
in
flu
en
cin
g
s
tu
d
en
t e
n
g
a
g
eme
n
t in
h
ig
h
er e
d
u
c
a
tio
n
(
La
i Th
i Th
u
Th
u
y
)
1483
T
ab
le
2
.
Me
asu
r
em
e
n
t m
o
d
el
ass
es
s
m
en
t
C
o
n
st
r
u
c
t
C
r
o
n
b
a
c
h
’
s
a
l
p
h
a
CR
AVE
SQ
0
.
8
2
3
0
.
8
8
3
0
.
6
5
4
CQ
0
.
8
3
2
0
.
8
8
9
0
.
6
6
6
TS
0
.
8
4
4
0
.
8
9
5
0
.
6
8
1
IN
0
.
8
3
2
0
.
8
8
8
0
.
6
6
5
PU
0
.
8
8
8
0
.
9
2
2
0
.
7
4
8
SE
0
.
9
2
9
0
.
9
4
7
0
.
7
8
0
T
ab
le
3
.
Dis
cr
im
in
an
t v
ali
d
ity
(
HT
MT
cr
iter
io
n
)
C
o
n
st
r
u
c
t
s
SQ
CQ
TS
IN
PU
SE
SQ
-
CQ
0
.
4
2
8
-
TS
0
.
4
6
8
0
.
4
8
8
-
IN
0
.
0
5
3
0
.
3
4
7
0
.
1
2
5
-
PU
0
.
6
6
6
0
.
7
1
6
0
.
6
1
7
0
.
3
9
0
-
SE
0
.
5
3
9
0
.
5
4
3
0
.
5
4
1
0
.
2
6
9
0
.
7
3
6
-
4
.
1
.
2
.
Str
uct
ura
l m
o
del a
nd
hy
po
t
hes
is
t
esting
T
h
e
s
tr
u
ctu
r
al
m
o
d
el
was
a
s
s
es
s
ed
u
s
in
g
PLS
-
SEM
wit
h
a
b
o
o
ts
tr
ap
p
i
n
g
p
r
o
ce
d
u
r
e
o
f
5
,
0
0
0
r
esam
p
les.
T
h
e
r
esu
lts
o
f
h
y
p
o
th
esis
test
in
g
ar
e
r
ep
o
r
ted
in
T
ab
le
4
.
SQ
s
h
o
ws
a
s
ig
n
if
ica
n
t
p
o
s
itiv
e
ef
f
ec
t
o
n
PU
(
β=0
.
3
4
9
,
t=7
.
6
1
1
,
p
<0
.
0
0
1
)
,
s
u
p
p
o
r
tin
g
H1
,
an
d
also
d
em
o
n
s
tr
ates
a
s
ig
n
if
ican
t
d
ir
ec
t
ass
o
ciatio
n
with
SE
(
β=0
.
1
2
4
,
t=2
.
5
2
1
,
p
=
0
.
0
1
2
)
,
s
u
p
p
o
r
tin
g
H2
.
CQ
is
p
o
s
itiv
ely
r
elate
d
to
PU
(
β=0
.
3
3
0
,
t=7
.
5
7
5
,
p
<
0
.
0
0
1
)
,
p
r
o
v
id
i
n
g
s
u
p
p
o
r
t
f
o
r
H3
;
h
o
wev
er
,
its
d
ir
ec
t
ass
o
ciatio
n
with
SE
is
n
o
t
s
tatis
tically
s
i
g
n
if
ican
t
(
β=0
.
0
8
0
,
t=1
.
3
9
7
,
p
=0
.
1
6
3
)
,
an
d
th
u
s
H
4
is
n
o
t su
p
p
o
r
ted
.
TS
ex
h
ib
its
s
ig
n
if
ican
t
p
o
s
iti
v
e
ef
f
ec
ts
o
n
b
o
th
PU
(
β=0
.
2
4
6
,
t=5
.
0
8
1
,
p
<0
.
0
0
1
)
an
d
SE
(
β=0
.
1
5
4
,
t=2
.
7
9
2
,
p
=0
.
0
0
5
)
,
s
u
p
p
o
r
tin
g
H5
an
d
H6
.
IN
also
s
h
o
w
s
a
s
ig
n
if
ican
t
p
o
s
itiv
e
ef
f
ec
t
o
n
PU
(
β=0
.
2
1
2
,
t=5
.
5
6
9
,
p
<0
.
0
0
1
)
,
s
u
p
p
o
r
tin
g
H7
,
wh
ile
its
d
ir
ec
t
ass
o
ciati
o
n
with
SE
is
n
o
t
s
ig
n
if
ican
t
(
β=0
.
0
4
7
,
t=
0
.
9
7
6
,
p
=0
.
3
2
9
)
,
lead
in
g
to
th
e
r
ejec
t
io
n
o
f
H8
.
I
n
a
d
d
itio
n
,
PU
d
e
m
o
n
s
tr
ates
a
s
tr
o
n
g
p
o
s
itiv
e
a
s
s
o
ciatio
n
with
SE
(
β=0
.
4
5
0
,
t=6
.
1
8
0
,
p
<0
.
0
0
1
)
,
s
u
p
p
o
r
tin
g
H9
.
T
ab
le
4
.
Stru
ctu
r
al
m
o
d
el
an
d
h
y
p
o
th
esis
test
in
g
H
y
p
o
t
h
e
s
i
s
S
t
r
u
c
t
u
r
a
l
p
a
t
h
β
t
-
v
a
l
u
e
p
-
v
a
l
u
e
R
e
s
u
l
t
H1
S
Q
→P
U
0
.
3
4
9
7
.
6
1
1
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H2
S
Q
→S
E
0
.
1
2
4
2
.
5
2
1
0
.
0
1
2
S
u
p
p
o
r
t
e
d
H3
C
Q
→P
U
0
.
3
3
0
7
.
5
7
5
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H4
C
Q
→S
E
0
.
0
8
0
1
.
3
9
7
0
.
1
6
3
N
o
t
s
u
p
p
o
r
t
e
d
H5
TS→P
U
0
.
2
4
6
5
.
0
8
1
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H6
TS→S
E
0
.
1
5
4
2
.
7
9
2
0
.
0
0
5
S
u
p
p
o
r
t
e
d
H7
I
N
→P
U
0
.
2
1
2
5
.
5
6
9
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H8
I
N
→S
E
0
.
0
4
7
0
.
9
7
6
0
.
3
2
9
N
o
t
s
u
p
p
o
r
t
e
d
H9
P
U
→S
E
0
.
4
5
0
6
.
1
8
0
0
.
0
0
1
S
u
p
p
o
r
t
e
d
Fig
u
r
e
1
p
r
esen
ts
th
e
r
esear
c
h
m
o
d
el
with
s
tan
d
ar
d
ize
d
p
ath
co
ef
f
icien
ts
an
d
R
²
v
alu
e
s
f
o
r
th
e
en
d
o
g
e
n
o
u
s
co
n
s
tr
u
cts.
T
h
e
m
o
d
el
ex
p
lain
s
6
0
.
7
%
o
f
th
e
v
ar
ian
ce
in
PU
(
R
²=
0
.
6
0
7
)
an
d
4
8
.
3
%
o
f
th
e
v
ar
ian
ce
in
SE
(
R
²=
0
.
4
8
3
)
,
in
d
icatin
g
m
o
d
er
ate
ex
p
lan
ato
r
y
p
o
wer
.
T
h
ese
r
esu
lts
s
u
g
g
e
s
t
th
at
th
e
p
r
o
p
o
s
ed
m
o
d
el
ad
e
q
u
ately
ca
p
t
u
r
es k
e
y
d
eter
m
in
a
n
ts
o
f
PU
an
d
SE
i
n
b
len
d
e
d
lear
n
in
g
co
n
tex
ts
.
4
.
1
.
3
.
M
edia
t
io
n a
na
ly
s
is
T
o
f
u
r
t
h
er
ex
am
i
n
e
th
e
m
ed
iatin
g
r
o
le
o
f
PU,
s
p
ec
if
ic
in
d
ir
ec
t
ef
f
ec
ts
wer
e
test
ed
u
s
in
g
a
b
o
o
ts
tr
ap
p
in
g
p
r
o
ce
d
u
r
e
w
ith
5
,
0
0
0
r
esam
p
les.
T
h
e
r
es
u
lts
o
f
t
h
e
m
e
d
iatio
n
a
n
aly
s
is
ar
e
p
r
esen
ted
in
T
ab
le
5
.
T
h
e
f
in
d
in
g
s
d
em
o
n
s
tr
ate
th
at
PU
ex
h
ib
its
s
ig
n
if
i
ca
n
t
in
d
ir
ec
t
ef
f
ec
ts
in
th
e
r
el
atio
n
s
h
ip
s
b
etwe
en
SQ,
C
Q,
T
S,
I
N,
a
n
d
SE.
Mo
r
e
s
p
ec
if
ically
,
t
h
e
in
d
ir
ec
t
ef
f
ec
ts
o
f
SQ
(
β=0
.
1
5
7
,
t=4
.
7
0
3
,
p
<
0
.
0
0
1
)
an
d
T
S
(
β=0
.
1
1
1
,
t=
3
.
8
4
8
,
p
<0
.
0
0
1
)
o
n
SE
th
r
o
u
g
h
PU
ar
e
s
ig
n
if
ican
t,
in
d
icatin
g
p
a
r
tial
m
ed
iatio
n
,
as
th
eir
d
ir
ec
t
p
ath
s
to
SE
ar
e
al
s
o
s
ig
n
if
ica
n
t.
I
n
co
n
tr
ast,
th
e
in
d
ir
ec
t
ef
f
ec
ts
o
f
C
Q
(
β=0
.
1
4
9
,
t=4
.
6
1
2
,
p
<0
.
0
0
1
)
an
d
I
N
(
β=0
.
0
9
6
,
t=4
.
2
3
4
,
p
<
0
.
0
0
1
)
a
r
e
s
ig
n
if
ican
t w
h
ile
th
eir
d
ir
ec
t e
f
f
ec
ts
o
n
SE
ar
e
n
o
t,
s
u
g
g
esti
n
g
f
u
ll m
ed
iatio
n
.
Ov
er
all,
th
ese
r
esu
lts
h
ig
h
lig
h
t
th
e
ce
n
tr
al
m
e
d
iatin
g
r
o
le
o
f
PU
in
ex
p
lain
in
g
h
o
w
b
len
d
ed
lear
n
i
n
g
f
ac
to
r
s
ar
e
ass
o
ciate
d
with
SE.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
2
2
I
n
t
J
E
v
al
&
R
es E
d
u
c
,
Vo
l
.
15
,
No
.
2
,
Ap
r
il
20
2
6
:
1
4
7
8
-
1
4
8
7
1484
Fig
u
r
e
1
.
R
esear
ch
m
o
d
el
an
d
s
tr
u
ctu
r
al
r
elatio
n
s
h
ip
s
T
ab
le
5
.
I
n
d
ir
ec
t (
m
ed
iatio
n
)
e
f
f
ec
ts
H
y
p
o
t
h
e
s
i
s
I
n
d
i
r
e
c
t
p
a
t
h
β
t
-
v
a
l
u
e
p
-
v
a
l
u
e
R
e
s
u
l
t
H
1
0
S
Q
→P
U
→S
E
0
.
1
5
7
4
.
7
0
3
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H
1
1
C
Q
→P
U
→S
E
0
.
1
4
9
4
.
6
1
2
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H
1
2
TS→P
U
→S
E
0
.
1
1
1
3
.
8
4
8
0
.
0
0
0
S
u
p
p
o
r
t
e
d
H
1
3
I
N
→P
U
→S
E
0
.
0
9
6
4
.
2
3
4
0
.
0
0
0
S
u
p
p
o
r
t
e
d
4
.
2
.
Dis
cus
s
io
n
T
h
is
s
tu
d
y
ex
am
in
ed
f
ac
to
r
s
ass
o
ciate
d
with
SE
in
b
len
d
e
d
lear
n
in
g
e
n
v
ir
o
n
m
en
ts
b
y
i
n
teg
r
atin
g
s
y
s
tem
-
r
elate
d
,
p
ed
a
g
o
g
ical,
an
d
in
ter
ac
tio
n
al
d
im
e
n
s
io
n
s
.
PU
was
co
n
ce
p
tu
alize
d
as
a
ce
n
tr
al
m
e
d
iatin
g
m
ec
h
an
is
m
in
th
e
p
r
o
p
o
s
ed
f
r
am
ewo
r
k
.
Ov
er
all,
th
e
f
in
d
i
n
g
s
p
r
o
v
id
e
em
p
ir
ical
s
u
p
p
o
r
t
f
o
r
th
e
i
n
teg
r
ated
f
r
am
ewo
r
k
an
d
ar
e
lar
g
ely
co
n
s
is
ten
t
with
p
r
io
r
r
esear
ch
o
n
tech
n
o
lo
g
y
-
en
h
a
n
ce
d
lear
n
i
n
g
an
d
SE
i
n
h
i
g
h
er
ed
u
ca
tio
n
.
T
h
e
r
esu
lts
in
d
icate
th
at
SQ
,
CQ
,
T
S
,
an
d
IN
a
r
e
all
s
ig
n
if
i
ca
n
tly
ass
o
ciate
d
with
PU
.
T
h
is
p
atter
n
is
co
n
s
is
ten
t
with
th
e
T
AM
an
d
th
e
in
f
o
r
m
atio
n
s
y
s
tem
s
s
u
cc
es
s
f
r
am
ewo
r
k
,
wh
ich
em
p
h
asiz
e
th
at
h
ig
h
-
q
u
ality
s
y
s
tem
s
,
lear
n
in
g
co
n
ten
t,
an
d
in
s
tr
u
ctio
n
al
s
u
p
p
o
r
t
a
r
e
cl
o
s
ely
r
elate
d
to
u
s
er
s
’
e
v
alu
a
tio
n
s
o
f
u
s
ef
u
l
n
ess
[
3
]
,
[
4
]
,
[
1
6
]
.
Similar
f
in
d
in
g
s
h
av
e
b
ee
n
r
ep
o
r
ted
in
b
len
d
ed
an
d
o
n
li
n
e
lear
n
in
g
co
n
tex
ts
,
wh
er
e
s
y
s
tem
r
eliab
ilit
y
an
d
co
n
te
n
t
r
elev
a
n
ce
ar
e
k
ey
an
tece
d
en
ts
o
f
PU
an
d
p
o
s
itiv
e
lear
n
i
n
g
e
x
p
er
ien
ce
s
[
2
]
,
[
1
7
]
.
R
ec
en
t
ev
id
en
ce
f
u
r
t
h
er
s
u
g
g
ests
th
at
tech
n
o
lo
g
y
in
ter
f
ac
e
ch
ar
ac
ter
is
tics
ar
e
clo
s
ely
r
elate
d
to
s
tu
d
en
ts
’
en
g
ag
em
e
n
t a
n
d
s
atis
f
ac
tio
n
b
y
s
h
ap
in
g
t
h
eir
p
er
ce
p
tio
n
s
o
f
u
s
ef
u
ln
ess
an
d
ea
s
e
o
f
IN
[
3
4
]
.
PU
,
in
tu
r
n
,
s
h
o
ws
a
s
tr
o
n
g
p
o
s
itiv
e
ass
o
ciat
io
n
with
SE
.
T
h
is
s
u
g
g
ests
th
at
s
tu
d
en
ts
ar
e
m
o
r
e
lik
ely
to
in
v
est
co
g
n
itiv
e,
b
eh
av
i
o
r
al,
an
d
em
o
tio
n
al
ef
f
o
r
t
wh
en
th
ey
p
er
ce
iv
e
b
len
d
ed
lear
n
in
g
s
y
s
tem
s
as
b
en
ef
icial
f
o
r
ac
h
iev
in
g
th
eir
ac
ad
em
ic
g
o
als.
T
h
is
f
in
d
in
g
alig
n
s
with
en
g
ag
em
e
n
t
r
esear
ch
em
p
h
asizin
g
th
e
r
o
le
o
f
s
tu
d
en
ts
’
s
u
b
jectiv
e
e
v
alu
atio
n
s
o
f
lear
n
i
n
g
ex
p
er
ie
n
ce
s
[
5
]
,
[
7
]
an
d
with
em
p
ir
ic
al
ev
id
en
ce
lin
k
in
g
tech
n
o
lo
g
y
ac
ce
p
tan
ce
to
en
g
a
g
em
en
t
-
r
elate
d
o
u
tco
m
es in
h
i
g
h
er
ed
u
ca
tio
n
[
1
7
]
.
R
eg
ar
d
in
g
d
ir
ec
t
r
elatio
n
s
h
i
p
s
,
SQ
an
d
TS
ar
e
s
ig
n
i
f
ican
tly
ass
o
ciate
d
with
SE
,
wh
er
ea
s
CQ
an
d
IN
ar
e
n
o
t.
T
h
e
d
ir
ec
t
r
o
le
o
f
SQ
is
co
n
s
is
ten
t
w
ith
in
f
o
r
m
atio
n
s
y
s
tem
s
an
d
s
er
v
ice
q
u
ality
r
esear
ch
,
s
u
g
g
esti
n
g
th
at
r
eliab
le
an
d
ac
ce
s
s
ib
le
lear
n
in
g
p
latf
o
r
m
s
ar
e
im
p
o
r
tan
t
co
n
d
itio
n
s
f
o
r
s
tu
d
en
ts
’
s
u
s
tain
ed
in
v
o
l
v
em
en
t in
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t
J
E
v
al
&
R
es E
d
u
c
I
SS
N:
2252
-
8
8
2
2
B
len
d
ed
lea
r
n
in
g
fa
cto
r
s
in
flu
en
cin
g
s
tu
d
en
t e
n
g
a
g
eme
n
t in
h
ig
h
er e
d
u
c
a
tio
n
(
La
i Th
i Th
u
Th
u
y
)
1485
lear
n
in
g
ac
tiv
ities
[
2
]
,
[
3
]
.
T
h
i
s
r
esu
lt
also
alig
n
s
with
r
ec
en
t
ev
id
en
ce
f
r
o
m
th
e
Vietn
am
ese
h
ig
h
er
e
d
u
ca
tio
n
co
n
tex
t,
wh
e
r
e
s
er
v
ice
q
u
ality
h
as
b
ee
n
lin
k
ed
to
s
tu
d
e
n
ts
’
s
atis
f
ac
tio
n
an
d
lo
y
alty
,
in
d
icatin
g
b
r
o
ad
e
r
im
p
licatio
n
s
f
o
r
en
g
ag
e
m
en
t
an
d
co
m
m
itm
en
t
[
3
5
]
.
T
h
is
p
atter
n
is
f
u
r
th
er
co
n
s
is
ten
t
with
p
r
io
r
f
in
d
in
g
s
s
h
o
win
g
th
at
well
-
d
esig
n
ed
b
l
en
d
ed
a
n
d
o
n
lin
e
lear
n
in
g
e
n
v
ir
o
n
m
en
ts
ar
e
ass
o
ciate
d
with
h
ig
h
er
lev
els
o
f
SE
an
d
s
atis
f
ac
tio
n
[
3
6
]
.
Similar
ly
,
th
e
s
ig
n
if
ican
t
d
ir
ec
t
ass
o
ciatio
n
s
b
etwe
en
TS
an
d
b
o
th
PU
an
d
SE
h
ig
h
lig
h
t
th
e
im
p
o
r
tan
t
r
o
le
o
f
in
s
tr
u
cto
r
s
in
b
len
d
e
d
lear
n
i
n
g
en
v
ir
o
n
m
en
ts
.
Prio
r
s
tu
d
ies
co
n
s
is
ten
tly
in
d
icate
th
at
in
s
tr
u
ctio
n
al
g
u
id
an
ce
,
f
ee
d
b
ac
k
,
an
d
teac
h
in
g
p
r
esen
ce
ar
e
clo
s
ely
r
elate
d
t
o
s
tu
d
e
n
ts
’
m
o
tiv
atio
n
an
d
en
g
ag
em
e
n
t
[
1
0
]
,
[
1
1
]
,
[
2
7
]
,
i
n
lin
e
with
th
e
C
o
I
f
r
am
ewo
r
k
,
wh
ich
em
p
h
asizes
teac
h
in
g
p
r
esen
ce
as
a
co
r
e
elem
en
t
o
f
m
ea
n
i
n
g
f
u
l
lear
n
i
n
g
in
tech
n
o
lo
g
y
-
m
ed
iated
c
o
n
tex
ts
[
1
4
]
,
[
1
5
]
.
T
h
is
in
ter
p
r
etatio
n
is
f
u
r
th
e
r
s
u
p
p
o
r
ted
b
y
em
p
ir
ical
ev
id
e
n
ce
s
h
o
win
g
th
at
s
u
p
p
o
r
tiv
e
tea
ch
in
g
p
r
ac
tices
ar
e
ass
o
ciate
d
with
h
ig
h
er
lev
els
o
f
SE
an
d
s
atis
f
ac
tio
n
in
o
n
lin
e
an
d
b
le
n
d
ed
h
ig
h
er
ed
u
ca
tio
n
s
ettin
g
s
[
3
7
]
.
I
n
co
n
tr
ast,
CQ
an
d
IN
d
o
n
o
t
ex
h
ib
it
s
ig
n
if
ican
t
d
ir
ec
t
a
s
s
o
ciatio
n
s
with
SE
,
alth
o
u
g
h
b
o
th
ar
e
s
ig
n
if
ican
tly
r
elate
d
t
o
PU
.
T
h
is
p
atter
n
s
u
g
g
ests
th
at
th
ese
f
ac
to
r
s
in
f
l
u
en
ce
e
n
g
ag
em
e
n
t
p
r
im
ar
ily
th
r
o
u
g
h
s
tu
d
en
ts
’
ev
alu
atio
n
s
o
f
t
h
e
l
ea
r
n
in
g
s
y
s
tem
r
ath
er
th
an
t
h
r
o
u
g
h
im
m
e
d
iate
b
eh
a
v
io
r
al
r
esp
o
n
s
es.
Similar
in
d
ir
ec
t
o
r
co
n
tex
t
-
d
ep
e
n
d
en
t
r
elatio
n
s
h
ip
s
b
etwe
en
co
n
ten
t,
IN
,
an
d
en
g
ag
em
e
n
t
h
av
e
b
ee
n
r
ep
o
r
ted
in
p
r
io
r
s
tu
d
ies,
p
ar
ticu
lar
ly
in
b
len
d
e
d
an
d
o
n
lin
e
lear
n
in
g
s
ettin
g
s
[
8
]
,
[
1
3
]
.
I
m
p
o
r
ta
n
tly
,
th
e
m
ed
iatio
n
a
n
aly
s
is
p
r
o
v
id
es
ev
id
e
n
ce
th
at
PU
p
lay
s
a
ce
n
tr
al
m
ed
iatin
g
r
o
le
in
th
e
r
elatio
n
s
h
ip
s
b
etwe
en
b
len
d
ed
lear
n
in
g
f
a
cto
r
s
an
d
SE
.
PU
f
u
lly
m
e
d
iates
th
e
r
elatio
n
s
h
ip
s
in
v
o
l
v
in
g
CQ
an
d
IN
an
d
p
ar
tially
m
ed
iates
th
e
r
elatio
n
s
h
ip
s
in
v
o
lv
in
g
SQ
an
d
TS
.
T
h
ese
f
in
d
in
g
s
ex
ten
d
ex
is
tin
g
m
ed
iatio
n
-
b
ased
r
esear
ch
b
y
h
i
g
h
lig
h
tin
g
tech
n
o
lo
g
y
-
r
elate
d
p
er
ce
p
tio
n
s
as
a
k
ey
p
s
y
ch
o
lo
g
ical
m
ec
h
an
is
m
lin
k
i
n
g
lear
n
in
g
en
v
ir
o
n
m
en
ts
to
en
g
a
g
em
en
t o
u
tco
m
es in
h
ig
h
er
e
d
u
ca
tio
n
[
1
0
]
.
Ov
er
all,
th
e
p
r
o
p
o
s
ed
m
o
d
el
d
em
o
n
s
tr
ates
m
o
d
er
ate
ex
p
lan
ato
r
y
p
o
wer
a
n
d
ac
c
o
u
n
ts
f
o
r
a
s
u
b
s
tan
tial p
r
o
p
o
r
tio
n
o
f
v
a
r
ian
ce
in
PU
an
d
SE
.
T
h
e
f
in
d
in
g
s
ar
e
co
n
s
is
ten
t w
ith
ev
id
en
ce
f
r
o
m
d
ev
elo
p
in
g
an
d
tr
an
s
itio
n
al
h
ig
h
er
ed
u
ca
tio
n
co
n
tex
ts
,
wh
ich
e
m
p
h
asi
ze
th
e
im
p
o
r
ta
n
ce
o
f
in
s
tr
u
ct
io
n
al
s
u
p
p
o
r
t
an
d
lear
n
in
g
co
n
d
itio
n
s
in
s
h
ap
in
g
SE
[
3
8
]
.
T
ak
e
n
to
g
eth
e
r
,
th
e
r
esu
lts
s
u
g
g
est
th
at
ef
f
ec
tiv
e
b
len
d
ed
lear
n
i
n
g
im
p
lem
en
tatio
n
in
v
o
lv
es
n
o
t
o
n
ly
r
o
b
u
s
t
s
y
s
tem
s
an
d
h
i
g
h
-
q
u
ality
co
n
ten
t
b
u
t
also
s
tr
o
n
g
in
s
tr
u
ctio
n
al
s
u
p
p
o
r
t th
at
e
n
h
an
ce
s
s
tu
d
e
n
ts
’
p
er
ce
p
tio
n
s
o
f
u
s
ef
u
ln
ess
.
5.
CO
NCLU
SI
O
N
T
h
is
s
tu
d
y
ex
am
in
e
d
f
ac
to
r
s
ass
o
ciate
d
with
SE
in
b
le
n
d
ed
lear
n
in
g
e
n
v
ir
o
n
m
en
ts
in
h
ig
h
e
r
ed
u
ca
tio
n
b
y
in
teg
r
atin
g
s
y
s
te
m
-
r
elate
d
,
p
ed
a
g
o
g
ical,
an
d
in
ter
ac
tio
n
al
d
im
en
s
io
n
s
,
with
PU
co
n
ce
p
tu
alize
d
as
a
ce
n
tr
al
m
ed
iatin
g
m
ec
h
an
is
m
.
Usi
n
g
PLS
-
SEM
an
d
s
u
r
v
ey
d
ata
f
r
o
m
u
n
d
er
g
r
ad
u
ate
s
tu
d
en
ts
in
Vietn
am
,
th
e
f
in
d
in
g
s
in
d
icat
e
th
at
SQ
,
CQ
,
TS
,
an
d
IN
ar
e
s
ig
n
if
ican
tly
ass
o
ciate
d
wi
th
s
tu
d
en
ts
’
PU
o
f
b
len
d
ed
lear
n
in
g
s
y
s
tem
s
.
PU
,
in
tu
r
n
,
s
h
o
ws
a
s
tr
o
n
g
p
o
s
itiv
e
ass
o
ciatio
n
with
SE
,
h
ig
h
lig
h
tin
g
its
ce
n
tr
al
r
o
le
in
e
x
p
lain
in
g
h
o
w
b
len
d
e
d
lear
n
in
g
en
v
ir
o
n
m
en
ts
r
elat
e
to
s
tu
d
en
ts
’
in
v
o
lv
em
e
n
t
in
lear
n
in
g
.
W
h
ile
SQ
an
d
TS
ar
e
also
d
ir
ec
tly
ass
o
ciate
d
with
SE
,
th
e
ef
f
ec
ts
o
f
CQ
an
d
IN
ap
p
ea
r
to
o
p
e
r
ate
p
r
i
m
ar
ily
th
r
o
u
g
h
PU
,
u
n
d
er
s
co
r
i
n
g
th
e
im
p
o
r
ta
n
ce
o
f
s
tu
d
en
ts
’
ev
alu
atio
n
s
o
f
lear
n
in
g
tech
n
o
lo
g
ies.
Fro
m
a
th
eo
r
etica
l
p
er
s
p
ec
tiv
e,
th
is
s
tu
d
y
ex
ten
d
s
p
r
io
r
r
e
s
ea
r
ch
o
n
SE
an
d
tec
h
n
o
lo
g
y
-
en
h
an
ce
d
lear
n
in
g
b
y
in
teg
r
atin
g
th
e
i
n
f
o
r
m
atio
n
s
y
s
tem
s
s
u
cc
ess
m
o
d
el
an
d
th
e
T
AM
,
th
er
e
b
y
o
f
f
e
r
in
g
a
m
o
r
e
n
u
an
ce
d
u
n
d
er
s
tan
d
in
g
o
f
th
e
m
ec
h
an
is
m
s
th
r
o
u
g
h
wh
ich
b
l
en
d
ed
lea
r
n
in
g
f
ac
to
r
s
a
r
e
r
ela
ted
to
e
n
g
ag
em
e
n
t
o
u
tco
m
es.
Pra
ctica
lly
,
th
e
f
in
d
in
g
s
s
u
g
g
est th
at
h
ig
h
er
ed
u
ca
tio
n
in
s
titu
tio
n
s
s
h
o
u
ld
n
o
t o
n
l
y
in
v
est in
r
eliab
le
an
d
u
s
er
-
f
r
ien
d
ly
LMS
b
u
t
als
o
em
p
h
asize
in
s
tr
u
ctio
n
al
s
u
p
p
o
r
t
an
d
teac
h
in
g
p
r
ac
tices
th
a
t
en
h
an
ce
s
tu
d
e
n
ts
’
p
er
ce
p
tio
n
s
o
f
u
s
ef
u
ln
ess
.
I
n
s
tr
u
cto
r
s
p
lay
a
p
ar
ticu
lar
ly
im
p
o
r
tan
t
r
o
le
in
tr
an
s
latin
g
b
len
d
ed
lear
n
in
g
d
esig
n
s
in
to
en
g
ag
in
g
lear
n
in
g
ex
p
er
ien
ce
s
,
h
ig
h
lig
h
tin
g
th
e
n
ee
d
f
o
r
o
n
g
o
in
g
p
r
o
f
ess
io
n
al
d
ev
elo
p
m
e
n
t
in
b
o
th
p
ed
ag
o
g
ical
a
n
d
tech
n
o
lo
g
ical
co
m
p
ete
n
cies.
Desp
ite
its
co
n
tr
ib
u
tio
n
s
,
th
is
s
tu
d
y
h
as
lim
itatio
n
s
,
in
clu
d
in
g
its
cr
o
s
s
-
s
ec
tio
n
al
d
esig
n
,
th
e
u
s
e
o
f
a
u
n
i
d
im
en
s
io
n
al
m
ea
s
u
r
e
o
f
SE
,
an
d
d
at
a
co
llectio
n
with
in
a
s
in
g
le
n
atio
n
al
co
n
tex
t.
Acc
o
r
d
in
g
l
y
,
f
u
tu
r
e
r
esear
ch
em
p
lo
y
in
g
lo
n
g
itu
d
i
n
al
o
r
ex
p
er
im
en
tal
d
esig
n
s
,
ad
o
p
tin
g
m
u
ltid
im
en
s
io
n
al
en
g
ag
em
en
t
m
ea
s
u
r
es,
an
d
ex
a
m
in
in
g
d
iv
er
s
e
cu
ltu
r
al
an
d
i
n
s
titu
tio
n
al
s
ettin
g
s
wo
u
ld
b
e
v
alu
ab
le
f
o
r
f
u
r
th
er
v
alid
atin
g
an
d
ex
ten
d
in
g
th
e
p
r
o
p
o
s
ed
m
o
d
el.
F
UNDING
I
NF
O
R
M
A
T
I
O
N
Au
th
o
r
s
s
tate
n
o
f
u
n
d
in
g
in
v
o
lv
ed
.
AUTHO
R
CO
NT
RI
B
UT
I
O
NS ST
A
T
E
M
E
N
T
T
h
is
jo
u
r
n
al
u
s
es
th
e
C
o
n
t
r
ib
u
to
r
R
o
les
T
a
x
o
n
o
m
y
(
C
R
ed
iT)
to
r
ec
o
g
n
ize
in
d
iv
i
d
u
al
au
th
o
r
co
n
tr
ib
u
tio
n
s
,
r
ed
u
ce
au
th
o
r
s
h
ip
d
is
p
u
tes,
an
d
f
ac
ilit
ate
co
llab
o
r
atio
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
8
2
2
I
n
t
J
E
v
al
&
R
es E
d
u
c
,
Vo
l
.
15
,
No
.
2
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