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K
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:
A
ca
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Fro
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Stu
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T
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a
rticle
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d
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e
CC B
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-
SA
li
c
e
n
se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Ma
.
An
g
el
ita
S.
R
ab
an
a
l
Gr
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u
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Sch
o
o
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tate
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p
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Ma
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a,
A
p
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C
ag
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y
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,
3
5
1
5
,
P
h
ilip
p
in
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E
m
ail:
a
n
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iesra
b
an
al
@
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m
a
il.
co
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;
ar
ab
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c
s
u
.
ed
u
.
p
h
1.
I
NT
RO
D
UCT
I
O
N
I
n
s
tit
u
tio
n
s
o
f
h
i
g
h
er
ed
u
ca
ti
o
n
a
s
th
e
r
u
d
i
m
en
tar
y
p
r
o
v
id
er
o
f
b
o
th
ac
ad
e
m
ic
a
n
d
n
o
n
-
ac
ad
e
m
ic
s
er
v
ices
to
th
e
ir
clien
ts
[
1
]
,
cli
en
t sa
tis
f
ac
tio
n
o
n
t
h
eir
f
r
o
n
tli
n
e
s
er
v
ices
is
t
h
e
m
o
s
t i
m
p
er
a
tiv
e
a
s
s
et
t
h
e
y
m
a
y
h
av
e.
I
t
is
t
h
e
m
ai
n
d
r
iv
er
f
o
r
p
er
f
o
r
m
a
n
ce
an
d
r
elies
h
ea
v
i
l
y
o
n
f
r
o
n
tli
n
e
s
e
r
v
ice
h
ab
its
[
2
]
.
C
o
n
s
eq
u
en
tl
y
,
r
ec
o
g
n
izi
n
g
th
a
t
t
h
ese
f
r
o
n
tl
in
e
s
er
v
ice
s
p
r
o
v
id
er
s
ar
e
co
n
ce
iv
ab
l
y
th
e
m
o
s
t
cr
itical
lin
k
i
n
d
eliv
er
in
g
q
u
alit
y
ed
u
ca
tio
n
al
s
er
v
ices,
th
er
e
h
a
s
b
ee
n
in
cr
ea
s
i
n
g
atte
n
tio
n
r
en
d
er
ed
to
clien
t
s
atis
f
ac
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r
eg
ar
d
in
g
th
e
q
u
alit
y
o
f
s
er
v
ice
d
eli
v
er
y
[
3
]
.
Mo
tef
ak
k
er
[
4
]
ar
g
u
es
t
h
at
it
is
n
ec
ess
ar
y
t
h
at
v
ie
w
p
o
i
n
t
s
,
tast
es,
an
d
d
esire
s
o
f
tr
an
s
ac
ti
n
g
clie
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ts
b
e
co
m
p
let
el
y
ta
k
e
n
i
n
to
co
n
s
id
er
atio
n
.
Giv
e
n
t
h
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i
m
p
o
r
tan
ce
to
t
h
e
i
d
ea
th
at
s
tu
d
e
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ts
ar
e
clien
t
s
o
r
cu
s
to
m
er
s
o
f
h
i
g
h
er
ed
u
ca
tio
n
in
s
tit
u
tio
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s
e
m
p
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as
ize
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ig
h
ts
an
d
t
h
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d
u
t
y
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i
n
s
tit
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tio
n
s
to
d
eliv
er
th
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f
i
n
est
ed
u
ca
tio
n
al
s
er
v
ices
p
o
s
s
ib
le
[
5
]
an
d
ev
en
tu
a
ll
y
lead
s
to
th
e
cr
ea
tio
n
o
f
th
eir
s
e
n
s
e
o
f
b
elo
n
g
i
n
g
an
d
lo
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alt
y
to
th
e
u
n
iv
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s
it
y
,
an
d
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o
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o
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l
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d
o
es
it
cr
ea
te
a
s
en
s
e
o
f
s
atis
f
ac
tio
n
b
u
t
m
a
k
es
th
e
m
f
ee
l
to
b
e
a
m
e
m
b
er
o
f
t
h
e
o
r
g
a
n
iz
atio
n
.
T
h
is
s
atis
f
ac
t
io
n
is
k
e
y
t
o
th
e
s
u
cc
e
s
s
o
f
a
u
n
iv
er
s
it
y
[
4
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t J
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v
al
&
R
e
s
E
d
u
c
I
SS
N:
2252
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8822
S
a
tis
fa
ctio
n
o
n
t
h
e
u
n
ivers
ity
fr
o
n
tlin
e
s
ervices:
F
r
o
m
th
e
le
n
s
o
f tra
n
s
a
ctin
g
… (
Ma
r
ivic
A
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Go
r
o
s
p
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)
985
I
n
ter
m
s
o
f
m
ar
k
et
in
g
,
cu
s
to
m
er
s
atis
f
ac
tio
n
is
t
h
e
d
eg
r
ee
to
w
h
ich
a
p
r
o
d
u
ct
o
r
s
er
v
ice
m
ee
t
s
o
r
ex
ce
ed
s
t
h
e
s
tan
d
ar
d
s
o
f
co
n
s
u
m
er
s
[
6
]
.
I
n
o
r
d
er
to
r
ea
ch
th
e
s
a
tis
f
ac
tio
n
o
f
co
n
s
u
m
er
s
,
o
r
g
an
iz
at
io
n
s
lau
n
c
h
cu
s
to
m
er
-
f
r
ie
n
d
l
y
an
d
co
m
p
r
eh
en
s
i
v
e
m
a
n
ag
e
m
e
n
t
ap
p
r
o
ac
h
es
[
7
]
.
I
n
th
e
r
ac
e
to
w
i
n
co
n
s
u
m
er
s
'
(
i.e
.
,
s
tu
d
e
n
ts
an
d
e
m
p
lo
y
ee
s
'
)
p
r
ef
er
en
ce
s
r
etain
s
u
s
tai
n
ab
le
co
m
p
e
titi
v
e
ad
v
an
ta
g
es
a
n
d
g
lo
b
al
co
m
p
etitio
n
h
a
s
e
m
p
h
a
s
ized
t
h
e
i
m
p
o
r
ta
n
ce
o
f
v
al
u
e,
w
o
r
th
,
a
n
d
s
a
tis
f
ac
tio
n
.
Q
u
alit
y
,
s
a
tis
f
ac
tio
n
,
an
d
s
u
cc
es
s
p
r
o
v
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to
b
e
th
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co
r
e
f
ac
to
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s
r
ec
ip
r
o
ca
lly
in
ter
r
elate
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in
a
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clica
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r
elatio
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s
h
ip
as
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ca
tio
n
al
p
r
o
g
r
a
m
s
ev
o
lv
e
in
to
s
er
v
ices
f
o
r
p
eo
p
le
.
C
u
s
to
m
er
s
ar
e
m
o
r
e
p
leased
w
h
e
n
s
er
v
ice
q
u
alit
y
is
h
ig
h
.
As
a
r
esu
lt,
ed
u
ca
tio
n
al
i
n
s
ti
t
u
tio
n
s
an
d
u
n
i
v
er
s
i
ties
p
u
t
a
g
r
ea
ter
f
o
cu
s
o
n
f
u
l
f
illi
n
g
th
e
d
esire
s
a
n
d
n
ee
d
s
o
f
t
h
eir
clien
t
s
,
th
e
“
s
t
u
d
en
ts
,
”
in
o
r
d
er
to
attr
ac
t
n
e
w
c
u
s
to
m
er
s
[
8
]
.
P
o
o
r
s
er
v
ice
q
u
alit
y
co
n
tr
ib
u
tes
to
lo
s
in
g
an
a
v
er
ag
e
o
f
1
2
%
o
f
t
h
e
cu
s
to
m
er
s
[
9
]
.
Ser
v
ice
q
u
alit
y
a
n
d
p
r
o
g
r
am
q
u
alit
y
ar
e
cr
itical
f
ac
to
r
s
f
o
r
d
ev
elo
p
in
g
an
d
s
u
s
tai
n
i
n
g
r
elatio
n
s
h
ip
s
w
it
h
cu
s
to
m
er
s
[
1
0
]
.
Sin
ce
it
h
as
a
s
ig
n
i
f
ica
n
t
i
m
p
ac
t
o
n
c
u
s
to
m
er
s
ati
s
f
ac
tio
n
a
n
d
cu
s
to
m
e
r
lo
y
al
t
y
to
s
er
v
ice
p
r
o
v
id
er
s
,
th
is
co
n
s
tr
u
ct
is
a
k
e
y
d
eter
m
i
n
an
t
o
f
th
e
o
r
g
an
izatio
n
’
s
s
u
cc
e
s
s
o
r
f
ail
u
r
e
in
a
co
m
p
etiti
v
e
en
v
ir
o
n
m
e
n
t
[
1
1
]
.
T
h
e
g
ap
b
et
w
ee
n
co
n
s
u
m
er
s
'
p
er
ce
p
tio
n
s
o
f
a
s
p
ec
i
f
ic
i
n
s
ti
tu
t
io
n
'
s
s
er
v
ices
a
n
d
th
ei
r
ex
p
ec
tatio
n
s
f
o
r
s
u
c
h
s
er
v
ice
s
is
k
n
o
w
n
a
s
s
er
v
ice
q
u
alit
y
[
1
2
]
.
Ma
n
y
s
tak
e
h
o
ld
er
s
a
n
d
th
eir
co
n
ce
r
n
s
,
w
h
et
h
er
ed
u
ca
tio
n
al
o
r
s
o
cia
l,
illu
s
tr
ate
th
e
v
al
u
e
o
f
s
u
c
h
a
s
er
v
ice.
I
t'
s
i
m
p
o
r
tan
t
t
o
h
av
e
a
q
u
alit
y
-
i
m
p
r
o
v
e
m
en
t
p
lan
in
p
lace
.
T
h
e
d
e
m
an
d
is
h
i
g
h
er
,
n
o
t
j
u
s
t
in
ter
m
s
o
f
teac
h
i
n
g
ef
f
icie
n
c
y
,
b
u
t
also
in
ter
m
s
o
f
s
o
cial
s
ta
n
d
ar
d
s
.
A
s
id
e
f
r
o
m
t
h
e
p
r
i
m
e
m
an
d
ate
o
f
p
r
o
v
id
in
g
i
n
s
tr
u
ctio
n
,
r
esear
ch
an
d
ex
te
n
s
io
n
to
th
e
p
u
b
lic,
g
o
v
er
n
m
e
n
t
h
ig
h
er
ed
u
ca
tio
n
in
s
t
itu
tio
n
s
ar
e
i
n
d
is
p
en
s
ab
le
in
s
tr
u
m
e
n
t
s
in
p
r
o
v
id
i
n
g
s
er
v
ic
e
q
u
al
it
y
to
clie
n
t
s
[
1
3
]
.
A
n
ac
co
m
p
lis
h
m
en
t
o
f
an
y
i
n
s
titu
tio
n
r
elies
o
n
th
e
co
m
p
ete
n
ce
o
f
f
o
r
e
e
m
p
l
o
y
ee
s
as
t
h
e
y
ar
e
co
n
s
id
er
ed
th
e
m
ain
c
h
ar
ac
ter
s
to
b
u
ild
th
e
f
ir
s
t
an
d
last
in
g
im
p
r
es
s
io
n
s
to
w
ar
d
s
an
o
r
g
a
n
izatio
n
’
s
p
o
s
itiv
e
i
m
a
g
e
to
its
clie
n
ts
[
14]
.
L
a
Viñ
a
[
1
5
]
in
2
0
1
2
s
tated
t
h
at
“
p
u
b
lic
o
f
f
ice
i
s
n
o
t
a
v
eh
icle
f
o
r
p
er
s
o
n
al
ag
g
r
a
n
d
ize
m
e
n
t,
n
o
r
is
it
a
lic
en
s
e
f
o
r
ab
u
s
e;
p
u
b
lic
o
f
f
ice
i
s
n
o
t
a
p
r
iv
ate
p
r
o
p
er
t
y
,
b
u
t
o
n
e
i
m
p
r
e
s
s
ed
w
it
h
p
u
b
lic
ac
co
u
n
tab
ili
t
y
.
”
I
t
is
o
n
th
is
p
r
in
cip
le
t
h
at
ea
ch
g
o
v
e
r
n
m
e
n
t
w
o
r
k
er
m
u
s
t
al
w
a
y
s
p
u
t
in
h
is
h
ea
r
t
an
d
m
i
n
d
th
at
to
b
e
w
o
r
k
in
g
f
o
r
t
h
e
g
o
v
er
n
m
e
n
t is a
s
ac
r
i
f
ice
o
f
o
n
esel
f
f
o
r
th
e
s
ak
e
o
f
t
h
e
co
u
n
tr
y
.
A
lo
n
g
t
h
is
li
n
e,
Sectio
n
2
o
f
R
.
A
.
6
7
1
3
(
C
o
d
e
o
f
C
o
n
d
u
ct
an
d
E
th
ical
Sta
n
d
ar
d
s
f
o
r
P
u
b
lic
Of
f
icials
an
d
E
m
p
lo
y
ee
s
)
p
r
o
v
id
es,
“
I
t
is
t
h
e
p
o
lic
y
o
f
t
h
e
Sta
te
to
p
r
o
m
o
te
a
h
i
g
h
s
tan
d
ar
d
o
f
et
h
ic
s
in
p
u
b
lic
s
er
v
ice.
P
u
b
lic
o
f
f
icial
s
an
d
e
m
p
lo
y
ee
s
s
h
al
l
at
all
ti
m
e
s
b
e
ac
co
u
n
t
ab
le
to
th
e
p
eo
p
le
an
d
s
h
all
d
is
ch
ar
g
e
th
eir
d
u
tie
s
w
it
h
u
t
m
o
s
t
r
esp
o
n
s
ib
ilit
y
,
in
teg
r
it
y
,
co
m
p
ete
n
ce
,
an
d
lo
y
a
lt
y
,
ac
t
w
it
h
p
atr
io
tis
m
a
n
d
ju
s
tice,
lead
m
o
d
est
liv
es,
a
n
d
u
p
h
o
ld
th
e
p
u
b
lic
in
ter
est o
v
er
p
er
s
o
n
al
in
ter
e
s
t.
”
T
h
e
in
cr
ea
s
in
g
i
n
ter
est
i
n
r
ec
o
g
n
iz
in
g
an
d
r
esp
o
n
d
i
n
g
to
clie
n
ts
'
i
n
ter
ac
tio
n
s
w
it
h
s
er
v
ice
d
eliv
er
y
i
s
r
ef
lecte
d
in
t
h
e
ex
ten
s
i
v
e
liter
atu
r
e
o
n
clie
n
t
s
ati
s
f
ac
tio
n
i
n
s
o
cial
s
er
v
ice
s
an
d
v
ar
io
u
s
att
e
m
p
ts
to
i
m
p
le
m
e
n
t
co
n
cr
ete
s
tep
s
[
1
6
]
.
C
u
s
to
m
er
s
atis
f
ac
tio
n
is
p
r
i
m
ar
il
y
d
ictat
ed
b
y
th
e
in
ter
ac
tio
n
s
o
f
t
h
e
c
u
s
to
m
er
s
d
u
r
i
n
g
t
h
e
tr
an
s
ac
tio
n
,
w
h
ic
h
is
w
h
y
s
er
v
ice
q
u
alit
y
i
s
s
u
c
h
a
n
es
s
en
t
i
al
co
m
p
o
n
e
n
t
o
f
s
ati
s
f
ac
t
io
n
.
T
h
e
q
u
alit
y
o
r
s
tate
o
f
th
e
s
er
v
ice
d
eter
m
i
n
es t
h
e
t
y
p
e
o
f
p
er
f
o
r
m
an
ce
t
h
e
p
r
o
v
id
er
is
ab
le
to
d
eliv
er
to
th
e
cu
s
t
o
m
er
s
[
1
7
]
.
Han
a
y
s
h
a
an
d
Ku
m
ar
[
1
8
]
estab
lis
h
ed
th
at
s
er
v
ice
q
u
al
it
y
an
d
s
atis
f
ac
tio
n
h
as
a
s
ig
n
if
ican
t
co
r
r
elatio
n
.
Stu
d
e
n
t
m
o
ti
v
atio
n
,
ed
u
ca
tio
n
al
s
atis
f
ac
tio
n
,
a
n
d
en
j
o
y
m
e
n
t
at
th
eir
p
lace
o
f
ed
u
ca
tio
n
ar
e
all
i
m
p
o
r
tan
t
f
ac
to
r
s
in
a
n
ed
u
ca
t
io
n
al
in
s
tit
u
tio
n
'
s
p
r
o
g
r
ess
.
I
t
is
th
er
e
f
o
r
e
i
m
p
o
r
tan
t
to
r
etai
n
h
i
g
h
ed
u
ca
tio
n
al
q
u
alit
y
in
o
r
d
er
to
ev
alu
ate
th
e
co
n
d
itio
n
o
f
s
t
u
d
en
ts
'
w
e
ll
-
b
ein
g
a
n
d
b
o
o
s
t
ac
ad
e
m
ic
s
ta
n
d
ar
d
s
[
1
9
]
.
Hen
ce
,
th
e
co
n
d
u
ct
o
f
th
i
s
clie
n
t
s
ati
s
f
ac
tio
n
s
u
r
v
e
y
w
i
ll
g
iv
e
th
e
u
n
i
v
er
s
i
t
y
r
ea
li
s
tic
a
n
d
p
o
ten
t
ial
f
ee
d
b
ac
k
o
n
t
h
e
ac
tu
al
p
er
f
o
r
m
a
n
ce
o
f
it
s
f
r
o
n
t
lin
e
s
er
v
ices.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
o
ass
ess
s
u
i
ta
b
ilit
y
an
d
r
e
lev
an
ce
,
a
n
d
to
en
s
u
r
e
ad
eq
u
ate
an
d
r
eliab
le
i
n
f
o
r
m
atio
n
f
o
r
t
h
e
ev
alu
a
tio
n
o
f
t
h
e
s
t
u
d
y
,
t
h
e
r
esear
ch
er
s
ad
o
p
ted
th
e
d
escr
ip
tiv
e
-
ev
al
u
ati
v
e
d
esi
g
n
a
n
d
asce
r
tain
ed
th
e
lev
e
l
o
f
clien
t
s
’
s
atis
f
ac
tio
n
o
n
t
h
e
f
r
o
n
tli
n
e
s
er
v
ices r
ec
e
i
v
ed
an
d
ex
p
er
ien
ce
d
in
th
e
ca
m
p
u
s
.
Desc
r
ip
tiv
e
as t
h
e
s
t
u
d
y
d
eter
m
in
ed
th
e
p
r
o
f
ile
o
f
r
es
p
o
n
d
en
ts
an
d
t
h
e
w
eig
h
ted
m
ea
n
o
f
th
eir
le
v
el
o
f
s
a
tis
f
ac
tio
n
r
ec
eiv
ed
an
d
ex
p
er
ien
ce
o
n
t
h
e
f
r
o
n
tli
n
e
s
er
v
ices
o
f
t
h
e
ca
m
p
u
s
.
E
v
al
u
ati
v
e,
o
n
t
h
e
o
th
er
h
a
n
d
,
co
m
p
ar
ed
s
i
g
n
if
ica
n
t
d
if
f
er
e
n
ce
s
in
t
h
e
m
ea
n
r
esp
o
n
s
e
s
o
f
th
e
r
esp
o
n
d
en
ts
w
h
en
g
r
o
u
p
ed
ac
co
r
d
in
g
to
r
esp
o
n
d
en
ts
’
p
r
o
f
ile,
t
y
p
e
o
f
clien
tele,
f
r
o
n
tli
n
e
s
er
v
ice
p
r
o
v
id
er
ev
al
u
ated
,
an
d
f
r
o
n
tli
n
e
s
er
v
ice
o
f
f
ice
as
s
es
s
ed
.
T
o
r
ed
u
ce
th
e
im
p
ac
t
o
f
co
n
f
o
u
n
d
i
n
g
v
ar
iab
le
s
,
r
esp
o
n
d
en
ts
w
er
e
ch
o
s
e
n
in
r
an
d
o
m
.
T
h
e
p
r
o
f
ile
v
ar
iab
les
w
er
e
also
ch
o
s
e
n
s
u
ch
t
h
at
t
h
e
y
ar
e
r
ele
v
an
t
a
n
d
m
a
tch
i
n
g
to
th
e
m
aj
o
r
v
ar
iab
le
o
f
th
e
s
t
u
d
y
,
en
s
u
r
in
g
t
h
at
th
er
e
i
s
n
o
m
u
lt
i
-
co
lli
n
ea
r
it
y
b
et
w
ee
n
th
e
m
.
T
h
e
r
esear
ch
er
s
u
s
ed
th
e
u
n
i
v
er
s
it
y
-
m
ad
e
s
tr
u
ct
u
r
ed
s
tu
d
en
t
s
an
d
f
ac
u
lt
y
a
n
d
p
er
s
o
n
n
el
s
atis
f
ac
tio
n
s
u
r
v
e
y
q
u
e
s
tio
n
n
air
e
f
o
r
co
ll
ec
tin
g
d
ata
in
d
eter
m
i
n
i
n
g
t
h
e
lev
el
o
f
clien
t
s
’
s
ati
s
f
ac
t
i
o
n
o
n
th
e
f
r
o
n
tli
n
e
s
er
v
ices
e
x
p
er
ien
ce
d
a
n
d
r
ec
eiv
ed
o
n
t
h
e
ca
m
p
u
s
.
T
h
e
q
u
esti
o
n
n
a
ir
e
in
cl
u
d
ed
t
w
o
p
a
r
ts
.
P
ar
t
1
aim
ed
to
g
ath
er
g
e
n
er
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Stu
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
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-
8822
I
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J
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v
al
&
R
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s
E
d
u
c
,
Vo
l.
10
,
No
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3
,
Sep
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2
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2
1
:
984
-
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988
Dev
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3
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4
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it
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all
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2
1
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1
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G
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T
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m
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[
2
3
]
th
at
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u
ca
tio
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d
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co
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o
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4
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.
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Desh
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l
[
2
4
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,
w
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a
s
ta
tis
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d
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B
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at
an
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Dar
zi
[
2
5
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,
s
h
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5
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2
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G
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’
pro
f
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2
6
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,
in
ter
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also
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o
ted
in
th
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s
t
u
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y
o
f
J
alali
,
et
a
l.
[
2
7
]
s
tu
d
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ex
p
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tatio
n
u
p
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g
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s
as
th
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A
cc
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Sab
ir
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a
l.
[
2
8
]
in
th
eir
s
t
u
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y
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s
atis
f
ied
e
m
p
lo
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ac
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[
2
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.
C
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eq
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[
3
0
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.
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du
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y
m
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ests
s
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s
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m
p
lo
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h
s
atis
f
ac
tio
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it
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in
s
tit
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tio
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’
s
f
r
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tli
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e
s
er
v
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p
r
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v
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.
W
ith
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th
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4.
CO
NCLU
SI
O
N
I
n
lig
h
t
o
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f
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co
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e
th
at
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tu
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en
ts
an
d
e
m
p
lo
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o
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th
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C
ag
a
y
a
n
State
Un
i
v
er
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it
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at
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p
ar
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i
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h
ilip
p
in
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f
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er
v
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f
th
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m
p
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s
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f
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a
v
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f
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m
p
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ac
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o
n
f
r
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er
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d
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o
f
f
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o
f
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v
alid
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e
f
in
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g
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o
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,
it
m
u
s
t
b
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licated
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ts
/
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is
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to
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s
w
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ce
s
f
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m
t
h
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f
r
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n
t
lin
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o
f
f
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A
s
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m
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s
t
u
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y
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t
h
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w
h
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u
n
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it
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s
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ld
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u
n
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tak
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an
d
f
i
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d
o
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if
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is
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s
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n
i
f
ica
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t
r
elatio
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s
h
ip
b
et
w
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th
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t
s
atis
f
ac
tio
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o
f
th
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m
an
c
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th
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ca
m
p
u
s
e
s
in
t
h
e
attai
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m
en
t o
f
its
tar
g
ets i
n
P
B
B
an
d
o
th
er
in
d
icato
r
s
.
RE
F
E
R
E
NC
E
S
[1
]
E.
Y.
A
li
,
M
.
M
u
n
ir,
J.
P
e
rm
a
n
a
,
a
n
d
D.
A
.
Ku
rn
iad
y
,
“
I
m
p
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q
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a
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ty
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IM
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,
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Un
ive
rs
a
l
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o
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rn
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E
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Res
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0
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[2
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Y.
-
C.
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,
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-
C.
W
a
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g
,
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.
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u
,
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-
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.
Hs
ieh
,
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.
-
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Ch
ie
n
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S
.
-
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.
T
sa
i
,
a
n
d
W
.
Do
n
g
,
“
A
n
e
m
p
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c
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a
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h
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u
sto
m
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sa
ti
s
f
a
c
ti
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n
stu
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:
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c
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sid
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d
if
f
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e
n
t
lev
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ls o
f
p
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rf
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n
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,
”
S
p
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rPlu
s,
v
o
l
.
5
,
p
.
1
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7
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6
.
[3
]
M
.
K.
Bra
d
y
,
C.
J.
Ro
b
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o
n
,
a
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d
J.
J.
Cro
n
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,
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a
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ti
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s
in
d
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c
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lt
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ra
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v
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m
e
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ts:
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n
in
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stig
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ti
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f
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rv
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q
u
a
li
ty
,
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u
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o
u
rn
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o
f
In
ter
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me
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t,
v
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[4
]
N.
M
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tef
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k
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r,
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h
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o
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F
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s
w
it
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re
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e
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o
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I
m
a
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Kh
o
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in
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In
tern
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Un
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f
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in
,
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3
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[5
]
J.
P
.
R
o
y
o
,
“
S
tu
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ts
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s
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u
sto
m
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rs:
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p
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ra
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sh
if
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ig
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b
a
ts.
J
o
u
rn
a
l
o
n
Cu
lt
u
re
,
Po
we
r
a
n
d
S
o
c
iety
,
v
o
l.
1
3
1
,
n
o
.
3
,
p
p
.
1
3
7
-
1
4
9
,
2
0
1
7
.
[6
]
H.
Ib
e
ra
h
im
,
N.
M
.
T
a
u
f
ik
,
A.
M
.
A
d
z
m
ir
,
a
n
d
H.
S
a
h
a
ru
d
d
in
,
“
Cu
sto
m
e
r
sa
ti
sfa
c
ti
o
n
o
n
re
li
a
b
il
it
y
a
n
d
re
sp
o
n
siv
e
n
e
ss
o
f
se
l
f
s
e
rv
ic
e
tec
h
n
o
lo
g
y
f
o
r
re
tail
b
a
n
k
in
g
se
r
v
ic
e
s
,
”
Pro
c
e
d
ia
Eco
n
o
mic
s
a
n
d
Fi
n
a
n
c
e
,
v
o
l.
3
7
,
p
p
.
1
3
-
2
0
,
2
0
1
6
.
[7
]
K.
F
.
A
d
ru
t
d
in
,
A
.
A
.
A
li
,
S
.
H.
Ha
ss
a
n
,
J.
Ja
a
f
a
r,
N.
S
.
A
.
Ra
h
i
m
,
a
n
d
M
.
I
.
Q
u
re
sh
i,
“
T
h
e
R
e
latio
n
sh
ip
b
e
tw
e
e
n
Kn
o
w
led
g
e
f
o
r
Cu
sto
m
e
r
a
n
d
S
e
rv
ice
Qu
a
li
ty
o
n
Cu
st
o
m
e
r
S
a
ti
sf
a
c
ti
o
n
:
A
S
tu
d
y
o
n
U
n
iKL
M
IT
EC
S
tu
d
e
n
t
S
e
rv
ice
s,”
In
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
E
n
g
i
n
e
e
rin
g
a
n
d
T
e
c
h
n
o
l
o
g
y
,
v
o
l.
7
,
n
o
.
2
.
2
9
,
p
p
.
6
9
-
7
2
,
2
0
1
8
.
[8
]
S
.
T
h
o
m
a
s,
“
W
h
a
t
Driv
e
s
S
tu
d
e
n
t
L
o
y
a
lt
y
in
Un
iv
e
rsiti
e
s:
A
n
Em
p
iri
c
a
l
M
o
d
e
l
f
ro
m
In
d
ia,”
In
ter
n
a
t
io
n
a
l
Bu
si
n
e
ss
Res
e
a
rc
h
,
v
o
l.
4
,
n
o
.
2
,
p
p
.
1
8
3
-
1
9
2
,
2
0
1
1
.
[9
]
K.
Risc
in
t
o
-
Ko
z
u
b
,
“
T
h
e
Ef
f
e
c
ts
o
f
S
e
rv
ice
Re
c
o
v
e
r
y
S
a
ti
sf
a
c
ti
o
n
o
n
Cu
st
o
m
e
r
L
o
y
a
lt
y
a
n
d
F
u
t
u
re
Be
h
a
v
io
ra
l
In
ten
ti
o
n
s:
A
n
Ex
p
lo
ra
to
ry
S
tu
d
y
in
th
e
L
u
x
u
ry
Ho
tel
In
d
u
st
ry
,
”
A
u
b
u
rn
Un
iv
e
rsity
El
e
c
tro
n
ic
T
h
e
se
s
a
n
d
Diss
e
rtatio
n
,
2
0
0
8
.
[1
0
]
A
.
R.
Os
m
a
n
,
R.
S
.
S
a
p
u
tra
,
a
n
d
J.
S
a
h
a
,
“
De
term
in
a
n
ts
o
f
stu
d
e
n
t
sa
ti
sf
a
c
ti
o
n
i
n
t
h
e
c
o
n
tex
t
o
f
h
ig
h
e
r
e
d
u
c
a
ti
o
n
:
a
c
o
m
p
lete
stru
c
tu
ra
l
e
q
u
a
ti
o
n
m
o
d
e
li
n
g
a
p
p
r
o
a
c
h
,
”
Brit
ish
J
o
u
r
n
a
l
o
f
M
a
rk
e
ti
n
g
S
t
u
d
ies
,
v
o
l.
5
,
n
o
.
6
,
p
p
.
1
-
1
4
,
2
0
1
7
.
[1
1
]
S.
-
P
.
L
in
,
Y.
-
H.
C
h
a
n
a
n
d
M
.
-
C.
T
sa
i,
“
A
tran
sf
o
r
m
a
ti
o
n
f
u
n
c
ti
o
n
c
o
rre
sp
o
n
d
in
g
t
o
I
P
A
a
n
d
g
a
p
a
n
a
ly
sis,”
T
o
ta
l
Qu
a
li
ty M
a
n
a
g
e
me
n
t
a
n
d
Bu
si
n
e
ss
Exc
e
ll
e
n
c
e
,
v
o
l.
2
0
,
n
o
.
8
,
p
p
.
8
2
9
-
8
4
6
,
2
0
0
9
.
[1
2
]
P.
-
F
.
C
h
o
u
,
C.
-
S
.
L
u
a
n
d
Y.
-
H
.
C
h
a
n
g
,
“
Eff
e
c
ts
o
f
se
rv
i
c
e
q
u
a
li
ty
a
n
d
c
u
sto
m
e
r
sa
ti
sfa
c
ti
o
n
o
n
c
u
st
o
m
e
r
lo
y
a
lt
y
in
h
ig
h
-
sp
e
e
d
ra
il
se
rv
ice
s in
T
a
iw
a
n
,
”
T
ra
n
sp
o
rtme
trica
A:
T
r
a
n
s
p
o
rt S
c
ien
c
e
,
v
o
l.
1
0
,
n
o
.
1
0
,
p
p
.
9
1
7
-
9
4
5
,
2
0
1
4
.
[1
3
]
B.
S
a
p
i
tu
la,
“
T
h
e
ro
le
o
f
P
h
il
i
p
p
i
n
e
sta
te
c
o
l
leg
e
s
a
n
d
u
n
iv
e
r
siti
e
s
in
e
n
h
a
n
c
in
g
f
o
o
d
se
c
u
rit
y
,
”
J
o
u
rn
a
l
o
f
In
ter
n
a
t
io
n
a
l
S
o
c
iety
f
o
r S
o
u
t
h
e
a
st A
sia
n
Ag
ric
u
lt
u
r
a
l
S
c
ien
c
e
s
,
v
o
l.
1
8
,
p
p
.
1
8
-
2
1
,
2
0
1
2
.
[1
4
]
A
.
H.
M
e
n
g
e
sh
a
,
“
E
ff
e
c
ts
o
f
m
a
rk
e
ti
n
g
c
o
m
p
e
ten
c
y
o
f
f
ro
n
tl
in
e
e
m
p
lo
y
e
e
s
o
n
c
u
sto
m
e
r
sa
ti
s
fa
c
ti
o
n
:
A
stu
d
y
o
n
c
o
m
m
e
rc
ial
b
a
n
k
o
f
Et
h
io
p
ia,”
As
h
Ese
J
o
u
rn
a
l
o
f
B
u
sin
e
ss
M
a
n
a
g
e
me
n
t
,
v
o
l.
1
,
n
o
.
4
,
p
p
.
3
9
-
5
0
,
2
0
1
5
.
[1
5
]
T
.
L
a
V
iñ
a
,
“
P
u
b
li
c
o
f
f
ice
,
p
u
b
li
c
tru
st,” M
a
n
il
a
S
ta
n
d
a
rd
T
o
d
a
y
,
P
h
il
ip
p
i
n
e
s,
2
0
1
2
.
[1
6
]
C.
L
.
M
u
n
d
y
,
A
.
N.
Ne
u
f
e
ld
a
n
d
S
.
J.
W
e
ll
s,
“
A
c
u
lt
u
ra
ll
y
re
lev
a
n
t
m
e
a
su
re
o
f
c
li
e
n
t
sa
ti
sf
a
c
ti
o
n
in
c
h
il
d
w
e
lf
a
re
se
rv
ice
s,”
Ch
il
d
re
n
a
n
d
Y
o
u
t
h
S
e
rv
ice
s R
e
v
iew
,
v
o
l.
1
7
0
,
p
p
.
1
7
7
-
1
8
9
,
2
0
1
6
.
[1
7
]
G
.
M
a
m
o
,
“
As
se
ss
m
e
n
t
o
f
th
e
F
a
c
to
rs
th
a
t
Aff
e
c
t
Cu
sto
m
e
r
S
a
ti
s
fa
c
ti
o
n
o
n
S
e
rv
ice
Qu
a
li
t
y
:
A
Ca
s
e
S
tu
d
y
in
Et
h
io
T
e
le
c
o
m
D
a
w
ro
Zo
n
e
,
”
Ar
a
b
i
a
n
J
o
u
rn
a
l
o
f
B
u
sin
e
ss
a
n
d
M
a
n
a
g
e
me
n
t
Rev
iew
,
v
o
l.
8
,
n
o
.
1
,
2
0
1
8
.
[1
8
]
J.
R.
M
.
Ha
n
a
y
sh
a
,
K.
M
.
Dilee
p
a
n
d
O
.
Y.
A
b
d
u
ll
a
h
,
“
S
e
rv
ice
q
u
a
li
ty
a
n
d
sa
ti
sf
a
c
ti
o
n
:
S
tu
d
y
o
n
in
ter
n
a
ti
o
n
a
l
stu
d
e
n
ts
i
n
u
n
iv
e
rsiti
e
s
o
f
No
rt
h
M
a
lay
sia
,
”
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
Res
e
a
rc
h
i
n
M
a
n
a
g
e
me
n
t
,
v
o
l.
3
,
n
o
.
2
,
p
p
.
1
1
6
-
1
3
3
,
2
0
1
2
.
[1
9
]
R.
E.
De
m
irb
a
tı
r,
“
Co
m
p
a
riso
n
o
f
b
u
rn
o
u
t,
v
ig
o
r
a
n
d
e
d
u
c
a
ti
o
n
sa
ti
sf
a
c
ti
o
n
o
f
m
u
sic
a
n
d
a
rt
m
a
jo
rs
in
d
e
p
a
rtm
e
n
t
o
f
f
in
e
a
rts
e
d
u
c
a
ti
o
n
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Eva
l
u
a
ti
o
n
a
n
d
Res
e
a
rc
h
in
E
d
u
c
a
t
io
n
(
IJ
ER
E)
,
v
o
l.
9
,
n
o
.
3
,
p
p
.
4
7
8
-
4
8
5
,
2
0
2
0
.
[2
0
]
Ku
sw
a
n
to
a
n
d
I
.
A
n
d
e
rso
n
,
“
Ef
fe
c
t
o
f
s
e
rv
ice
q
u
a
li
ty
a
n
d
m
o
ti
v
a
ti
o
n
o
n
t
h
e
c
o
n
su
m
p
ti
o
n
b
e
h
a
v
io
r
o
f
stu
d
e
n
ts
i
n
th
e
a
c
a
d
e
m
ic
se
r
v
ice
s
o
f
Un
iv
e
r
sity
o
f
Ja
m
b
i,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Eva
lu
a
ti
o
n
a
n
d
Res
e
a
rc
h
in
Ed
u
c
a
t
io
n
(
IJ
ER
E)
,
v
o
l.
1
0
,
n
o
.
1
,
p
p
.
8
6
-
9
6
,
2
0
2
1
.
[2
1
]
O.
S
.
Itan
i,
F
.
Ja
ra
m
il
lo
a
n
d
B.
P
a
e
sb
ru
g
g
h
e
,
“
Be
tw
e
e
n
a
ro
c
k
a
n
d
a
h
a
rd
p
lac
e
:
S
e
izin
g
th
e
o
p
p
o
rt
u
n
it
y
o
f
d
e
m
a
n
d
in
g
c
u
sto
m
e
rs
b
y
m
e
a
n
s
o
f
f
ro
n
tl
i
n
e
se
rv
ice
b
e
h
a
v
io
rs,
”
J
o
u
r
n
a
l
o
f
Ret
a
il
i
n
g
a
n
d
Co
n
s
u
me
r
S
e
rv
ice
s
,
v
o
l.
2
3
,
2
0
2
0
,
d
o
i
:
1
0
.
1
0
1
6
/j
.
jretc
o
n
se
r.
2
0
1
9
.
1
0
1
9
7
8
.
[2
2
]
G
.
S
a
n
to
s,
C
.
S
.
M
a
r
q
u
e
s,
E.
J
u
stin
o
a
n
d
L
.
M
e
n
d
e
s,
“
Un
d
e
rsta
n
d
in
g
so
c
ial
re
sp
o
n
sib
i
li
ty
’s
in
f
lu
e
n
c
e
o
n
se
rv
ice
q
u
a
li
ty
a
n
d
stu
d
e
n
t
sa
ti
sf
a
c
ti
o
n
i
n
h
ig
h
e
r
e
d
u
c
a
ti
o
n
,
”
J
o
u
r
n
a
l
o
f
Cl
e
a
n
e
r P
ro
d
u
c
t
io
n
,
v
o
l.
2
5
6
,
M
a
y
2
0
2
0
.
[2
3
]
S
.
S
iv
a
n
a
n
d
a
m
o
o
rth
y
a
n
d
M
.
K
a
ru
n
a
n
it
h
y
,
“
P
e
rso
n
a
l
De
m
o
g
ra
p
h
ica
l
F
a
c
to
rs
a
n
d
t
h
e
ir
In
f
lu
e
n
c
e
o
n
C
u
sto
m
e
r
S
a
ti
sf
a
c
ti
o
n
f
ro
m
Cu
sto
m
e
r
P
e
rsp
e
c
ti
v
e
,
”
Eu
ro
p
e
a
n
J
o
u
r
n
a
l
o
f
Bu
si
n
e
ss
a
n
d
M
a
n
a
g
e
me
n
t
,
v
o
l.
5
,
n
o
.
2
0
,
p
p
.
4
2
-
4
5
,
2
0
1
3
.
[2
4
]
S
.
De
sh
w
a
l
,
“
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ter
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ter
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[2
9
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V
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.
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a
ra
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n
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ts’
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:
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n
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d
ian
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.
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p
.
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.
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