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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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C
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p
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I
SS
N:
2088
-
8708
Dev
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atic
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[
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,
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v
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[
4
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f
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d
M
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s
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elate
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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2
0
8
8
-
8708
I
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t J
E
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&
C
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m
p
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n
g
,
Vo
l.
8
,
No
.
1
,
Feb
r
u
ar
y
201
8
:
5
9
6
–
6
0
4
598
r
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g
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lo
ck
s
w
it
h
i
n
an
A
n
d
r
o
id
ap
p
licatio
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—
A
cti
v
itie
s
,
Ser
v
i
ce
s
,
B
r
o
ad
ca
s
t
R
ec
eiv
er
s
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an
d
C
o
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te
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t
P
r
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id
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I
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itio
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ter
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e>
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I
n
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s
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er
alize
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m
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te
n
t.
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e
I
n
ten
t
is
g
l
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e
f
o
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ec
t
in
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ti
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it
ies
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n
an
An
d
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id
ap
p
licatio
n
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n
ten
ts
m
ak
e
i
t
p
o
s
s
ib
le
f
o
r
ac
tiv
it
ie
s
o
r
ap
p
licatio
n
s
to
b
e
n
av
ig
ab
le
f
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o
m
o
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e
to
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o
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er
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h
e
I
n
ten
t
i
s
a
m
e
s
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en
g
er
i
n
cl
u
d
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g
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ata
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s
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o
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ld
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d
eli
v
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et
w
ee
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ac
ti
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s
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ile
E
x
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licit
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n
te
n
t
s
p
ec
if
ie
s
a
ca
ll
ed
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m
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o
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t
w
it
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n
a
ca
lli
n
g
co
m
p
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n
t,
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m
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lici
t
I
n
te
n
t
s
p
ec
if
ie
s
an
ac
tio
n
w
it
h
o
u
t p
o
in
ti
n
g
o
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t a
ca
lled
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m
p
o
n
en
t.
Fig
u
r
e
1
.
T
h
e
UM
L
P
r
o
f
ile
Diag
r
a
m
f
o
r
th
e
An
d
r
o
id
Mo
b
ile
P
latf
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m
Fig
u
r
e
2
ill
u
s
tr
ate
s
t
h
e
o
v
er
al
l
p
r
o
ce
s
s
o
f
t
h
e
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
to
d
esi
g
n
m
o
b
ile
clo
u
d
a
p
p
licatio
n
s
u
s
i
n
g
UM
L
.
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s
e
ca
s
e
d
iag
r
a
m
s
an
al
y
ze
u
s
er
s
’
te
x
tu
a
l
r
eq
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ir
e
m
en
ts
s
o
t
h
at
it
ca
n
elab
o
r
ate
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e
m
b
y
a
v
o
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g
u
n
clea
r
a
n
d
a
m
b
ig
u
o
u
s
p
ar
ts
o
f
th
e
r
eq
u
ir
e
m
e
n
t
s
.
On
ce
t
h
e
r
eq
u
ir
e
m
e
n
ts
ar
e
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tr
ac
ted
,
co
n
ce
p
tu
al
class
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a
m
s
ca
n
b
e
m
o
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elled
f
r
o
m
t
h
e
r
eq
u
ir
e
m
e
n
ts
.
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h
e
co
n
ce
p
tu
al
clas
s
d
ia
g
r
a
m
ai
m
s
t
o
id
en
ti
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t
h
e
m
ai
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n
d
th
eir
r
elatio
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s
h
i
p
s
at
th
e
an
al
y
s
i
s
lev
el.
T
h
e
attr
ib
u
tes
an
d
o
p
er
atio
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s
o
f
th
e
clas
s
ca
n
b
e
d
eter
m
in
ed
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f
n
ee
d
ed
.
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h
e
co
n
ce
p
tu
al
clas
s
d
iag
r
a
m
r
ep
r
es
en
ts
th
e
s
tr
u
ct
u
r
a
l
p
er
s
p
ec
tiv
e
o
f
a
m
o
b
ile
clo
u
d
ap
p
licatio
n
.
Oth
er
UM
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d
ia
g
r
a
m
s
i
n
cl
u
d
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g
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tiv
i
t
y
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r
a
m
s
ca
n
b
e
u
s
ed
to
clar
if
y
th
e
p
r
ev
io
u
s
m
o
d
eli
n
g
in
f
o
r
m
atio
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a
n
d
to
r
ep
r
esen
t
th
e
d
y
n
a
m
ic
v
ie
w
o
f
th
e
tar
g
et
ap
p
licatio
n
.
Fig
u
r
e
2
s
h
o
w
s
t
h
e
ac
tiv
i
t
y
d
iag
r
a
m
,
s
tate
d
ia
g
r
a
m
,
a
n
d
s
eq
u
e
n
ce
d
iag
r
a
m
d
u
e
to
s
p
ac
e
li
m
itatio
n
s
.
I
n
t
h
e
d
esi
g
n
p
h
a
s
e,
th
e
clas
s
d
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r
a
m
i
n
clu
d
e
s
m
o
r
e
d
etailed
i
n
f
o
r
m
atio
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o
n
t
h
e
tar
g
et
s
y
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te
m
.
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n
ad
d
itio
n
,
t
h
e
UM
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p
r
o
f
iles
f
o
r
m
o
b
ile
p
l
atf
o
r
m
s
s
h
o
u
ld
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e
ad
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ed
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th
e
cla
s
s
d
ia
g
r
a
m
s
o
th
at
t
h
e
y
ca
n
e
x
p
r
ess
m
o
r
e
s
p
ec
if
ic
in
f
o
r
m
at
io
n
o
f
th
e
class
e
s
.
T
h
e
class
d
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r
a
m
s
ar
e
p
ass
ed
as
i
n
p
u
t
i
n
to
th
e
p
ac
k
ag
e
d
ia
g
r
a
m
s
w
h
i
ch
d
escr
ib
e
th
e
lo
g
ical
d
is
tr
ib
u
tio
n
o
f
t
h
e
m
o
b
ile
clo
u
d
ap
p
licatio
n
.
T
h
e
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ac
k
ag
e
d
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r
a
m
ca
n
b
e
s
ep
ar
ated
in
to
th
r
ee
p
ar
ts
:
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o
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ile
clie
n
t
l
a
y
er
,
b
u
s
in
e
s
s
la
y
er
an
d
d
ata
la
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er
.
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t
h
e
n
a
m
e
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s
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th
e
m
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ile
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t
l
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s
th
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m
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t
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k
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h
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p
r
o
v
id
e
u
s
er
in
ter
f
ac
es
f
o
r
ap
p
licatio
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u
s
er
s
.
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h
e
p
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k
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es
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th
e
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n
es
s
la
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er
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m
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u
s
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ta
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k
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ch
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ata
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h
t
h
e
p
ac
k
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e
s
in
th
e
m
o
b
ile
clie
n
t
la
y
er
.
T
h
e
p
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k
ag
es
r
elate
d
to
d
a
ta
s
o
u
r
ce
s
r
esid
e
in
th
e
d
ata
la
y
er
.
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ac
h
la
y
er
ca
n
co
m
m
u
n
icate
w
i
th
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th
er
la
y
er
s
.
T
h
e
d
ep
lo
y
m
e
n
t
d
ia
g
r
a
m
p
r
o
v
id
es
t
h
e
p
h
y
s
ical
d
is
tr
ib
u
tio
n
o
f
t
h
e
m
o
b
ile
cl
o
u
d
ap
p
licatio
n
.
T
h
er
ef
o
r
e,
o
p
er
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co
m
p
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tin
g
s
y
s
te
m
s
s
u
c
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as
m
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d
ev
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ap
p
licatio
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s
er
v
er
s
,
r
u
n
t
i
m
e
e
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m
en
ts
,
an
d
d
at
ab
ase
m
an
a
g
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m
e
n
t s
y
s
te
m
s
ca
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b
e
s
p
ec
if
ied
i
n
th
e
d
ep
lo
y
m
en
t
d
ia
g
r
a
m
.
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t
also
co
n
tain
s
th
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n
et
w
o
r
k
p
r
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to
co
ls
w
h
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s
in
a
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m
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in
f
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m
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le
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m
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ca
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th
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An
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latf
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s
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v
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Evaluation Warning : The document was created with Spire.PDF for Python.
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N:
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3.
CASE
S
T
UD
Y
W
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av
e
ap
p
lied
th
e
p
r
o
p
o
s
ed
ap
p
r
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ac
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to
a
b
u
lleti
n
b
o
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d
ap
p
licatio
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w
h
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h
o
p
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ates o
n
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m
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d
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r
astr
u
ctu
r
e.
S
u
c
h
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c
ase
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t
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d
y
m
a
y
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u
ate
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e
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f
f
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tiv
e
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ess
o
f
t
h
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p
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ap
p
r
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s
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th
e
UM
L
ar
ti
f
ac
ts
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d
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g
n
m
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d
ap
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r
th
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s
e
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l
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m
h
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s
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n
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n
s
id
er
ed
s
i
n
ce
it
is
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t
y
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ca
l
an
d
co
m
m
o
n
m
o
d
u
le
f
o
r
m
u
lti
-
la
y
er
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p
lica
tio
n
s
.
W
e
h
a
v
e
ap
p
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t
h
e
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p
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s
ed
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p
r
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ac
h
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to
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b
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ll
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b
o
ar
d
ap
p
licatio
n
w
h
ich
o
p
er
ates
o
n
a
m
o
b
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clo
u
d
in
f
r
astr
u
ctu
r
e.
S
u
c
h
a
ca
s
e
s
tu
d
y
m
a
y
ev
al
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ate
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f
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o
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s
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L
ar
tif
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s
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o
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n
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s
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d
co
m
m
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m
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d
u
le
f
o
r
m
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lti
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la
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p
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s
.
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h
e
r
eq
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ir
em
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n
ts
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o
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th
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b
u
lletin
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ar
d
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p
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ar
e
s
tr
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u
r
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B
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g
in
f
r
astru
ct
u
r
e.
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er
e
ar
e
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n
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h
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s
es
a
n
d
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to
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d
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r
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e
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B
S
ap
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licatio
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.
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h
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B
B
S
ap
p
licatio
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s
u
p
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ts
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a
n
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ltip
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b
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lleti
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s
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n
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asic
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u
n
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tio
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s
f
o
r
ea
ch
b
u
l
leti
n
b
o
ar
d
.
A
cto
r
Me
m
b
er
ca
n
b
r
o
w
s
e
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l
is
t
o
f
t
h
e
b
u
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n
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ar
d
s
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d
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lis
t
o
f
t
h
e
ite
m
s
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a
b
u
lleti
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b
o
ar
d
.
He
o
r
s
h
e
ca
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also
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o
k
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th
e
co
n
te
n
t
s
o
f
th
e
s
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ted
ite
m
.
Af
ter
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elete
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Use
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in
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r
elatio
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ip
w
ith
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h
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u
llet
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o
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o
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er
atio
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Fig
u
r
e
3
.
T
h
e
Use Cas
e
Diag
r
a
m
f
o
r
th
e
B
B
S
An
d
r
o
id
ap
p
li
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tio
n
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
8
,
No
.
1
,
Feb
r
u
ar
y
201
8
:
5
9
6
–
6
0
4
600
On
ce
th
e
s
o
f
t
w
ar
e
d
ev
elo
p
er
co
n
s
id
er
s
th
e
u
s
e
ca
s
e
d
iag
r
am
co
m
p
leted
,
it
is
p
ass
ed
in
to
th
e
n
ex
t
m
o
d
eli
n
g
ta
s
k
w
h
ic
h
w
i
ll
cr
e
ate
th
e
co
n
ce
p
tu
al
c
lass
d
iag
r
a
m
to
r
ep
r
esen
t
ce
n
tr
al
c
lass
e
s
an
d
r
elatio
n
s
h
ip
s
b
et
w
ee
n
th
e
m
in
t
h
e
B
B
S
ap
p
licatio
n
.
T
h
e
co
n
ce
p
tu
al
class
d
iag
r
a
m
r
ep
r
esen
ts
t
h
e
s
tr
u
c
t
u
r
al
p
er
s
p
ec
tiv
e
o
f
th
e
m
o
b
ile
clo
u
d
ap
p
licatio
n
.
T
h
e
co
n
ce
p
tu
al
cla
s
s
d
ia
g
r
a
m
m
a
y
co
n
ta
in
s
o
m
e
attr
ib
u
te
s
an
d
o
p
er
atio
n
s
o
f
a
class
.
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v
en
if
th
e
co
n
ce
p
tu
a
l
c
lass
d
ia
g
r
a
m
ca
n
n
o
t
p
r
o
v
id
e
f
u
ll
y
d
etailed
i
n
f
o
r
m
atio
n
f
o
r
t
h
e
i
m
p
le
m
e
n
tat
io
n
,
it
is
o
b
v
io
u
s
t
h
at
s
u
ch
a
d
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g
r
a
m
m
a
y
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e
u
s
e
f
u
l
to
s
k
etch
th
e
co
m
p
r
eh
e
n
s
i
v
e
asp
ec
ts
o
f
th
e
m
o
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ile
clo
u
d
ap
p
licatio
n
in
th
e
i
n
it
ial
m
o
d
elin
g
.
Af
ter
co
m
p
leti
n
g
t
h
e
c
o
n
ce
p
tu
al
cla
s
s
d
ia
g
r
a
m
,
w
e
ca
n
co
n
s
tr
u
ct
o
t
h
er
UM
L
d
iag
r
a
m
s
a
n
d
ar
tif
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ts
i
n
clu
d
i
n
g
ac
tiv
i
t
y
d
iag
r
a
m
s
,
s
t
ate
d
iag
r
a
m
s
,
an
d
s
eq
u
e
n
ce
d
iag
r
a
m
s
.
T
h
ey
h
elp
d
escr
ib
e
th
e
d
y
n
a
m
ic
p
er
s
p
ec
t
iv
es a
s
w
ell
as t
h
e
s
tr
u
ctu
r
al
p
er
s
p
ec
tiv
es o
f
t
h
e
B
B
S a
p
p
licatio
n
.
T
h
e
n
ex
t
s
tep
is
to
co
n
s
tr
u
ct
class
d
iag
r
a
m
s
w
h
ich
m
o
d
el
t
h
e
B
B
S
ap
p
licatio
n
at
th
e
d
es
ig
n
le
v
el.
C
o
m
p
ar
ed
to
th
e
co
n
ce
p
tu
al
cl
ass
d
ia
g
r
a
m
,
t
h
e
c
lass
d
iag
r
a
m
co
n
tai
n
s
t
h
e
UM
L
p
r
o
f
il
es
f
o
r
t
h
e
An
d
r
o
id
m
o
b
ile
p
lat
f
o
r
m
p
r
esen
ted
i
n
T
ab
le
1
.
I
t
is
ex
p
ec
ted
f
o
r
th
e
class
d
iag
r
a
m
to
ca
p
tu
r
e
m
o
r
e
s
p
ec
if
ic
in
f
o
r
m
atio
n
o
n
th
e
B
B
S
ap
p
licatio
n
u
s
i
n
g
t
h
e
U
ML
p
r
o
f
iles
.
Fi
g
u
r
e
4
s
h
o
w
s
th
e
c
la
s
s
d
ia
g
r
a
m
w
h
ich
ex
p
r
ess
es
t
h
e
s
ter
eo
t
y
p
es
f
o
r
th
e
An
d
r
o
id
m
o
b
ile
p
lat
f
o
r
m
.
T
h
e
class
d
iag
r
a
m
is
b
ased
o
n
th
e
M
VC
d
esi
g
n
p
atter
n
.
A
ll
t
h
e
class
e
s
in
th
e
d
iag
r
a
m
ar
e
ca
teg
o
r
ized
in
to
th
r
ee
p
ar
ts
-
m
o
d
el
class
e
s
,
v
ie
w
cla
s
s
e
s
,
an
d
co
n
tr
o
ller
class
e
s
ac
co
r
d
in
g
t
o
th
e
c
h
ar
ac
ter
is
tic
o
f
th
e
clas
s
.
T
h
e
m
o
d
el
cla
s
s
m
a
in
ta
in
s
d
ata
in
th
e
p
r
o
b
le
m
d
o
m
ai
n
.
T
h
e
v
ie
w
c
lass
p
r
o
v
i
d
es
u
s
er
in
ter
f
ac
es
to
d
is
p
la
y
all
o
r
a
p
o
r
tio
n
o
f
th
e
d
ata
b
as
ed
o
n
ch
an
g
e
s
in
t
h
e
m
o
d
el.
T
h
e
co
n
tr
o
l c
las
s
ca
n
h
an
d
le
ev
e
n
t
s
t
h
at
a
f
f
ec
t t
h
e
m
o
d
el
’
s
s
tate
o
r
t
h
e
v
ie
w
’
s
p
r
esen
tatio
n
.
Mo
s
t
v
ie
w
class
es c
a
n
b
e
r
ep
r
esen
ted
w
it
h
s
ter
eo
t
y
p
e
<<
A
cti
v
it
y
>>
s
i
n
ce
th
e
A
n
d
r
o
id
ac
tiv
it
y
is
a
co
d
e
b
lo
ck
o
f
th
e
u
s
er
in
ter
f
ac
e.
T
h
e
An
d
r
o
id
ac
tiv
it
y
cla
s
s
h
a
s
a
n
An
d
r
o
id
m
a
n
i
f
est
cla
s
s
w
h
ic
h
co
n
tai
n
s
in
f
o
r
m
atio
n
o
n
th
e
B
B
S
ap
p
licatio
n
in
cl
u
d
in
g
co
m
p
o
n
en
ts
,
p
er
m
is
s
io
n
s
,
a
n
d
u
s
ed
an
d
r
o
id
A
P
I
s
.
An
ac
ti
v
it
y
cla
s
s
ca
n
n
av
ig
ate
to
an
o
th
er
ac
t
iv
it
y
c
lass
b
y
p
a
s
s
i
n
g
an
ex
p
lici
t
i
n
te
n
t
i
n
t
h
e
B
B
S
ap
p
licatio
n
.
T
h
e
in
ten
t
cla
s
s
es
ca
n
h
a
v
e
cla
s
s
B
u
n
d
le
to
p
ass
d
ata
b
etw
ee
n
An
d
r
o
id
ac
tiv
ities
.
T
h
e
b
u
n
d
l
e
class
ca
n
h
o
ld
all
t
y
p
es
o
f
v
alu
es
b
y
u
s
i
n
g
k
e
y
-
v
alu
e
m
ap
p
in
g
s
.
I
n
th
e
d
ia
g
r
a
m
,
s
o
m
e
class
e
s
ar
e
d
en
o
ted
b
y
s
ter
eo
t
y
p
e
<<
T
h
r
ea
d
>>
w
h
ic
h
in
d
icate
s
t
h
e
co
r
r
esp
o
n
d
in
g
clas
s
es p
er
f
o
r
m
an
in
d
ep
en
d
en
t ta
s
k
f
r
o
m
th
e
m
ai
n
UI
th
r
ea
d
.
Fig
u
r
e
4
.
T
h
e
C
lass
Dia
g
r
a
m
w
it
h
t
h
e
Ster
eo
t
y
p
es
f
o
r
th
e
B
B
S An
d
r
o
id
ap
p
licatio
n
I
n
th
i
s
p
ap
er
,
p
ac
k
ag
e
d
iag
r
a
m
s
a
n
d
d
ep
lo
y
m
e
n
t d
iag
r
a
m
s
ar
e
u
s
ed
to
v
is
u
alize
t
h
e
f
ea
t
u
r
es o
f
m
u
l
ti
-
la
y
er
ed
ap
p
licatio
n
s
.
Fig
u
r
e
5
s
h
o
w
s
t
h
e
p
ac
k
ag
e
d
iag
r
a
m
f
o
r
th
e
B
B
S
A
n
d
r
o
id
ap
p
licati
o
n
w
h
ic
h
d
escr
ib
es
th
e
lo
g
ical
d
is
tr
ib
u
t
io
n
o
f
th
e
m
o
b
ile
clo
u
d
ap
p
licatio
n
.
T
h
e
p
ac
k
ag
e
d
iag
r
a
m
co
n
s
i
s
ts
o
f
th
e
m
o
b
ile
clie
n
t
la
y
er
,
b
u
s
i
n
e
s
s
la
y
er
,
an
d
d
at
a
la
y
er
.
T
h
e
m
o
b
ile
clie
n
t
la
y
er
co
n
tain
s
p
ac
k
a
g
e
m
o
d
u
les
f
o
r
u
s
er
in
ter
f
ac
es
w
h
er
e
u
s
er
s
ca
n
en
ter
ev
e
n
ts
o
r
r
eq
u
ests
an
d
r
ec
ei
v
e
r
es
u
lts
.
T
h
e
p
ac
k
ag
es
i
n
t
h
e
m
o
b
ile
clien
t
la
y
er
h
o
ld
t
h
e
v
ie
w
cla
s
s
es
in
th
e
cla
s
s
d
ia
g
r
a
m
.
T
h
e
b
u
s
in
e
s
s
la
y
er
ta
k
es
d
ata
f
r
o
m
t
h
e
m
o
b
ile
c
li
en
t
la
y
er
an
d
t
h
en
p
er
f
o
r
m
s
b
u
s
i
n
es
s
ta
s
k
s
w
it
h
t
h
e
d
ata.
T
h
e
b
u
s
i
n
es
s
ta
s
k
ca
n
in
v
o
lv
e
i
n
m
a
n
ag
in
g
s
o
m
e
d
ata
th
r
o
u
g
h
th
e
d
ata
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2088
-
8708
Dev
elo
p
men
t o
f Mo
b
ile
C
lo
u
d
A
p
p
lica
tio
n
s
u
s
in
g
UML
(
Do
n
g
K
w
a
n
K
im
)
601
la
y
er
.
T
h
e
r
esu
lt
s
o
f
th
e
co
m
p
leted
task
s
ca
n
b
e
s
e
n
t
to
th
e
m
o
b
ile
clie
n
t
la
y
er
o
r
b
e
s
to
r
ed
in
to
th
e
d
ata
s
o
u
r
ce
s
i
n
th
e
d
ata
la
y
er
.
T
h
e
f
in
al
s
tep
o
f
t
h
e
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
is
to
b
u
ild
a
d
e
p
lo
y
m
e
n
t
d
iag
r
a
m
w
h
ic
h
v
i
s
u
alize
s
t
h
e
p
h
y
s
ical
d
is
tr
ib
u
tio
n
o
f
th
e
B
B
S
ap
p
licatio
n
.
Fi
g
u
r
e
6
s
h
o
w
s
t
h
e
d
ep
lo
y
m
en
t
d
iag
r
a
m
f
o
r
th
e
B
B
S
An
d
r
o
id
ap
p
licatio
n
.
I
n
th
e
d
ep
lo
y
m
en
t
d
iag
r
a
m
,
w
e
ca
n
ill
u
s
tr
ate
r
u
n
ti
m
e
e
n
v
ir
o
n
m
e
n
t
s
,
m
o
b
ile
p
lat
f
o
r
m
s
,
ap
p
licatio
n
s
er
v
er
s
,
co
n
tai
n
er
s
,
d
atab
ase,
an
d
n
et
w
o
r
k
p
r
o
to
co
ls
.
W
e
ca
n
u
n
d
er
s
tan
d
t
h
e
p
h
y
s
ical
co
n
f
i
g
u
r
atio
n
o
f
t
h
e
o
p
er
atin
g
s
y
s
te
m
f
o
r
th
e
B
B
S
ap
p
licati
o
n
.
T
h
e
d
e
p
lo
y
m
en
t
d
iag
r
a
m
ca
n
b
e
co
n
s
tr
u
cted
f
r
o
m
th
e
p
ac
k
a
g
e
d
ia
g
r
a
m
.
I
n
Fig
u
r
e
6
,
t
h
e
An
d
r
o
id
m
o
b
ile
p
latf
o
r
m
is
u
s
ed
f
o
r
t
h
e
c
lien
t
la
y
er
a
n
d
t
h
e
B
B
S
An
d
r
o
id
p
ac
k
ag
e
f
ile
r
es
id
es
o
n
th
e
clie
n
t
la
y
er
.
T
h
e
A
p
ac
h
e
T
o
m
ca
t
s
er
v
er
is
u
s
ed
f
o
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er
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s
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SP
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h
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B
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b
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x
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if
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p
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h
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m
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clien
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n
o
d
e
ca
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r
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m
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p
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m
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th
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ap
p
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Fig
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.
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C
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Vo
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8
,
No
.
1
,
Feb
r
u
ar
y
201
8
:
5
9
6
–
6
0
4
602
s
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an
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ase
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lleti
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a
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ical
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etailed
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etr
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d
elete
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y
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p
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g
s
.
T
h
e
B
B
S
ap
p
licatio
n
u
s
es
t
h
e
M
y
S
QL
DB
MS
t
o
s
to
r
e
an
d
m
a
n
a
g
e
th
e
u
p
lo
ad
ed
d
ata.
T
h
e
B
B
S
ap
p
licatio
n
u
s
es
t
h
e
R
etr
o
f
it
lib
r
ar
y
[
5
]
w
h
ic
h
i
s
a
t
y
p
e
-
s
af
e
HT
T
P
clien
t
p
r
o
g
r
a
m
f
o
r
An
d
r
o
id
ap
p
licatio
n
s
.
I
t
p
r
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es
th
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R
E
ST
f
u
l
HT
T
P
A
P
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s
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u
d
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g
GE
T
,
P
OS
T
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U
T
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d
DE
L
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E
.
T
h
e
s
er
v
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-
s
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e
f
u
n
ctio
n
s
o
f
t
h
e
m
o
b
ile
ap
p
licatio
n
h
a
v
e
b
ee
n
i
m
p
le
m
en
ted
i
n
J
av
aSer
v
er
P
ag
es
(
J
SP
)
w
h
ic
h
en
ab
les
s
o
f
t
w
ar
e
p
r
o
g
r
a
m
m
e
r
s
to
b
u
ild
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p
ag
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d
y
n
a
m
icall
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u
s
in
g
J
av
a
tec
h
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o
lo
g
ies.
Fo
r
th
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d
ata
ex
ch
a
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et
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B
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s
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th
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J
av
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ip
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Ob
j
ec
t
No
tatio
n
(
J
SON)
d
ata
f
o
r
m
at
[
6
]
.
J
SON
d
ef
i
n
es
a
d
ata
f
o
r
m
at
w
h
ic
h
co
n
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is
t
s
o
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attr
i
b
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te
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v
al
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e
p
air
s
.
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h
e
s
y
n
ta
x
o
f
th
e
J
SON
s
tan
d
ar
d
is
s
i
m
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le
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th
at
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elo
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ec
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-
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ased
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ata
f
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m
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t
an
d
v
al
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ate
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e
co
r
r
ec
tn
ess
o
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th
e
d
ef
i
n
ed
f
o
r
m
at.
T
h
e
m
o
b
ile
ap
p
licatio
n
u
s
e
s
th
e
J
SON
f
o
r
m
at
to
ex
c
h
an
g
e
d
ata
o
v
er
th
e
I
n
ter
n
et.
Fig
u
r
e
7
.
T
h
e
Sy
s
te
m
A
r
c
h
ite
ctu
r
e
o
f
th
e
Mo
b
ile
C
lo
u
d
A
p
p
licatio
n
f
o
r
th
e
C
ase
St
u
d
y
4.
DIS
CU
SS
I
O
N
T
h
e
m
ain
co
n
tr
ib
u
t
io
n
o
f
th
is
p
ap
er
is
to
p
r
o
v
id
e
a
UM
L
m
o
d
elin
g
g
u
id
elin
e
f
o
r
d
ev
elo
p
i
n
g
m
o
b
ile
clo
u
d
ap
p
licatio
n
s
.
Si
n
ce
t
h
e
m
u
lti
-
la
y
er
ap
p
licatio
n
o
f
te
n
r
u
n
s
o
n
h
eter
o
g
e
n
eo
u
s
co
m
p
u
ti
n
g
en
v
ir
o
n
m
e
n
ts
,
it
is
tr
ick
y
f
o
r
th
e
s
o
f
t
w
ar
e
d
ev
elo
p
er
to
b
u
ild
th
e
ap
p
licat
io
n
s
w
it
h
o
u
t
t
h
e
aid
o
f
p
r
ac
tical
an
d
s
tep
w
is
e
m
et
h
o
d
s
.
Ma
n
y
m
o
b
ile
ap
p
s
h
av
e
b
ee
n
d
ev
elo
p
ed
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d
r
u
n
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th
e
clo
u
d
co
m
p
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tin
g
i
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f
r
astru
ct
u
r
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o
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h
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th
e
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er
v
er
p
r
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g
r
a
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esid
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Du
e
to
s
u
c
h
a
d
if
f
er
e
n
t
p
latf
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m
,
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e
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f
t
w
ar
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ev
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lo
p
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ld
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s
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d
if
f
er
en
t
p
r
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g
r
am
m
i
n
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lan
g
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ag
e
s
,
s
o
f
t
w
ar
e
d
ev
elo
p
m
en
t
k
it
s
,
an
d
r
u
n
t
i
m
e
s
y
s
te
m
s
.
T
h
e
m
i
x
ed
m
u
lti
-
tier
ap
p
licatio
n
co
u
ld
lead
to
s
o
m
e
d
i
f
f
icu
ltie
s
o
f
m
o
d
eli
n
g
o
f
th
e
ap
p
licati
o
n
in
th
e
a
n
al
y
s
i
s
a
n
d
d
esig
n
p
h
ases
.
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v
en
if
th
e
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
to
d
esig
n
t
h
e
m
o
b
ile
ap
p
licatio
n
d
o
es
n
o
t
p
r
o
v
id
e
th
e
f
in
e
-
g
r
ain
ed
s
tep
s
a
n
d
p
r
ac
tices,
t
h
e
d
ev
elo
p
m
en
t
p
r
o
ce
s
s
e
s
i
n
th
is
p
ap
er
allo
w
t
h
e
s
o
f
t
w
ar
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d
ev
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p
er
to
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escr
ib
e
an
d
ca
p
tu
r
e
t
h
e
ce
n
tr
al
p
o
r
tio
n
s
o
f
t
h
e
m
o
b
ile
clo
u
d
ap
p
licatio
n
.
An
o
th
er
l
i
m
i
tatio
n
o
f
t
h
e
p
r
o
p
o
s
ed
ap
p
r
o
ac
h
is
t
h
at
it
d
o
es
n
o
t
s
u
p
p
o
r
t
an
y
s
o
f
t
w
ar
e
d
ev
elo
p
m
en
t
to
o
ls
a
n
d
co
d
e
g
en
er
atio
n
.
Ho
w
e
v
er
,
s
in
ce
t
h
e
o
n
l
y
s
ta
n
d
ar
d
UM
L
n
o
tatio
n
s
ar
e
u
s
ed
,
m
o
s
t o
f
t
h
e
UM
L
to
o
ls
co
u
ld
b
e
u
s
ed
to
s
u
p
p
o
r
t th
e
p
r
o
p
o
s
e
d
s
ter
eo
ty
p
es a
n
d
d
iag
r
a
m
s
.
5.
RE
L
AT
E
D
WO
RK
Sin
ce
t
h
e
in
tr
o
d
u
ctio
n
o
f
o
b
j
ec
t
-
o
r
ien
ted
s
o
f
t
w
ar
e
d
ev
elo
p
m
e
n
t
tec
h
n
iq
u
es,
UM
L
h
a
s
p
r
o
v
id
ed
s
y
s
te
m
a
tic
g
u
id
eli
n
es
a
n
d
r
eg
u
latio
n
s
to
i
m
p
r
o
v
e
th
e
p
er
f
o
r
m
an
ce
o
f
s
o
f
t
w
ar
e
d
ev
elo
p
m
e
n
t
.
I
n
ad
d
itio
n
,
t
h
e
r
esear
ch
r
es
u
lts
h
a
v
e
b
ee
n
p
u
b
lis
h
ed
t
h
at
ap
p
l
y
U
M
L
to
v
a
r
io
u
s
ap
p
licatio
n
d
o
m
a
in
s
r
an
g
in
g
f
r
o
m
d
e
s
k
to
p
ap
p
licatio
n
s
[
7
]
an
d
W
eb
ap
p
licatio
n
s
[
8
]
to
e
m
b
ed
d
ed
ap
p
licatio
n
s
[
9
]
.
I
n
p
ar
ticu
lar
,
d
u
e
to
th
e
w
id
esp
r
ea
d
u
s
e
o
f
m
o
b
ile
d
e
v
ices,
U
ML
h
as
b
ee
n
ap
p
lied
to
im
p
r
o
v
e
t
h
e
p
r
o
d
u
ctiv
it
y
o
f
m
o
b
ile
ap
p
licatio
n
d
ev
elo
p
m
en
t
.
T
h
e
UM
L
m
eta
-
m
o
d
els
a
n
d
p
r
o
f
iles
h
a
v
e
b
ee
n
ex
te
n
d
ed
to
p
r
o
v
id
e
b
est
d
e
v
elo
p
m
e
n
t
p
r
ac
tices
an
d
g
u
id
eli
n
es
f
o
r
A
n
d
r
o
id
m
o
b
ile
ap
p
licatio
n
s
[
1
0
]
,
[
1
1
]
.
Mo
b
ile
p
latf
o
r
m
-
s
p
ec
i
f
ic
s
o
u
r
ce
co
d
e
ca
n
b
e
au
to
m
at
icall
y
g
e
n
er
ate
d
f
r
o
m
UM
L
m
o
d
els
to
i
m
p
r
o
v
e
d
ev
elo
p
m
e
n
t
p
r
o
d
u
ctiv
it
y
.
U
ML
is
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s
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u
s
ed
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s
p
ec
if
y
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tr
u
ct
u
r
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d
d
y
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a
m
i
c
m
o
d
els
i
n
Mo
d
el
Dr
iv
en
Dev
elo
p
m
e
n
t
(
MD
D
)
[
1
2
]
,
a
s
o
f
t
w
ar
e
d
ev
elo
p
m
e
n
t
m
et
h
o
d
o
lo
g
y
b
ased
o
n
M
o
d
el
Dr
iv
e
n
A
r
ch
i
tectu
r
e
(
MD
A
)
.
A
lo
n
g
w
i
th
th
e
UM
L
m
o
d
e
lin
g
co
n
ce
p
ts
a
n
d
n
o
tatio
n
s
,
MD
D
s
u
p
p
o
r
ts
ef
f
i
cien
t
a
n
d
e
f
f
ec
t
iv
e
s
o
f
t
w
ar
e
d
ev
elo
p
m
e
n
t
v
ia
m
o
d
el
co
n
v
er
s
io
n
a
n
d
au
to
m
ati
c
co
d
e
g
en
er
atio
n
u
s
i
n
g
P
latf
o
r
m
I
n
d
ep
en
d
en
t
Mo
d
el
(
P
I
M
)
an
d
P
latf
o
r
m
Sp
ec
if
ic
Mo
d
el
(
P
SM
)
.
Du
e
to
t
h
e
p
r
o
d
u
ctiv
it
y
,
MD
D
i
s
ac
tiv
e
l
y
ap
p
lied
to
b
u
ild
m
o
b
ile
ap
p
licatio
n
s
[
1
3
-
1
7
]
.
Fab
ian
o
Fre
itas
an
d
h
i
s
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
E
lec
&
C
o
m
p
E
n
g
I
SS
N:
2088
-
8708
Dev
elo
p
men
t o
f Mo
b
ile
C
lo
u
d
A
p
p
lica
tio
n
s
u
s
in
g
UML
(
Do
n
g
K
w
a
n
K
im
)
603
co
lleag
u
es
in
tr
o
d
u
ce
d
an
MD
D
-
b
ased
ap
p
r
o
ac
h
to
d
ev
elo
p
A
n
d
r
o
id
ap
p
licatio
n
s
,
ca
lled
Ju
s
tMo
d
elin
g
[1
8
]
w
h
ic
h
p
r
o
v
id
es
UM
L
-
b
ased
m
o
d
el
i
n
g
d
ia
g
r
a
m
s
a
n
d
co
d
e
g
en
er
atio
n
.
T
h
e
MD
D
ap
p
r
o
a
ch
i
s
also
ap
p
lied
t
o
co
n
s
tr
u
ct
e
m
b
ed
d
ed
s
e
n
s
o
r
-
b
ased
ap
p
licatio
n
s
in
a
m
o
b
ile
p
latf
o
r
m
[
1
9
]
o
r
An
d
r
o
id
ap
p
licatio
n
p
r
o
to
t
y
p
es
[
2
0
]
.
Fo
r
all
m
o
b
ile
p
lat
f
o
r
m
s
,
a
m
e
ta
-
m
o
d
el
p
r
o
v
id
es
a
h
ig
h
-
le
v
el
ab
s
tr
ac
tio
n
t
h
at
i
s
i
n
d
ep
en
d
en
t
f
r
o
m
a
s
p
ec
if
ic
m
o
b
ile
p
latf
o
r
m
.
T
h
e
ab
s
tr
ac
t
m
o
d
el
w
i
ll
b
e
tr
a
n
s
f
o
r
m
ed
in
to
a
m
o
b
ile
p
latf
o
r
m
-
s
p
ec
i
f
ic
m
o
d
el
ac
co
r
d
in
g
to
th
e
m
ap
p
in
g
r
u
le
s
.
Fin
all
y
,
t
h
e
s
o
u
r
ce
co
d
e
o
f
a
m
o
b
ile
ap
p
licatio
n
w
il
l
b
e
g
en
er
ated
f
r
o
m
t
h
e
s
p
ec
if
ic
m
o
d
el
b
y
u
s
in
g
a
co
d
e
g
en
er
atio
n
te
m
p
late.
6.
CO
NCLU
SI
O
N
S A
ND
F
UT
URE WO
RK
T
h
is
p
ap
er
h
as
p
r
o
p
o
s
ed
s
o
f
t
w
ar
e
d
ev
elo
p
m
e
n
t
ac
tiv
i
t
ies
an
d
p
r
o
ce
d
u
r
es
to
b
u
il
d
m
o
b
ile
ap
p
licatio
n
s
o
n
t
h
e
clo
u
d
s
e
r
v
ice
p
latf
o
r
m
b
y
ap
p
l
y
i
n
g
UM
L
d
ia
g
r
a
m
s
an
d
ar
ti
f
ac
ts
.
T
h
e
m
o
b
ile
clo
u
d
ap
p
licatio
n
o
f
te
n
r
u
n
s
o
n
th
e
m
u
lti
-
tier
e
n
ter
p
r
is
e
ar
ch
it
ec
tu
r
e
i
n
clu
d
i
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g
clie
n
t
la
y
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s
(
m
o
b
ile
clie
n
t
s
)
,
ap
p
licatio
n
la
y
er
s
(
ap
p
licatio
n
s
er
v
er
s
)
,
an
d
d
atab
ase
la
y
e
r
s
(
d
atab
ase
s
er
v
er
s
)
.
T
h
e
p
r
o
p
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s
ed
ap
p
r
o
ac
h
to
d
esig
n
s
u
c
h
ap
p
licatio
n
s
p
r
o
v
id
es
s
y
s
te
m
at
ic
g
u
id
elin
e
s
f
o
r
ap
p
l
y
i
n
g
U
ML
p
r
o
f
ile
s
e
x
ten
s
io
n
s
,
cla
s
s
d
iag
r
a
m
s
,
a
n
d
d
ep
lo
y
m
en
t
d
iag
r
a
m
s
.
T
h
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ex
p
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m
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ta
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lts
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g
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t
th
at
t
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p
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g
u
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le
to
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m
p
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v
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t
h
e
p
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d
u
ctiv
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t
y
,
s
ca
lab
ilit
y
,
a
n
d
m
a
in
ta
in
ab
ilit
y
o
f
s
o
f
t
w
ar
e
d
esi
g
n
m
o
d
els.
F
o
r
th
e
ca
s
e
s
tu
d
ie
s
,
w
e
u
s
ed
th
e
An
d
r
o
id
m
o
b
ile
p
latf
o
r
m
,
Am
az
o
n
W
eb
Ser
v
ice
f
o
r
clo
u
d
co
m
p
u
ti
n
g
,
an
d
M
y
SQ
L
f
o
r
d
ata
m
an
a
g
e
m
e
n
t.
As
a
f
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t
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r
e
w
o
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k
,
th
e
p
r
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p
o
s
ed
ap
p
r
o
ac
h
w
il
l
b
e
te
s
ted
a
n
d
r
ef
in
ed
o
n
t
h
e
m
u
lt
i
-
p
lat
f
o
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m
s
s
u
ch
as
th
e
iO
S
m
o
b
ile
p
lat
f
o
r
m
a
n
d
W
in
d
o
w
s
Mo
b
ile
o
t
h
er
th
an
t
h
e
An
d
r
o
id
p
latf
o
r
m
.
W
e
b
eliev
e
t
h
at
t
h
e
ex
ten
s
io
n
to
o
th
er
m
o
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ile
c
lo
u
d
ap
p
licatio
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s
m
a
y
b
e
s
t
r
aig
h
t
f
o
r
w
ar
d
b
ec
au
s
e
m
o
b
il
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p
latf
o
r
m
s
s
h
o
w
co
m
m
o
n
c
h
ar
ac
ter
is
tic
s
i
n
m
a
n
y
w
a
y
s
.
I
n
ad
d
itio
n
,
to
i
m
p
r
o
v
e
t
h
e
f
o
r
m
al
s
p
ec
i
f
icatio
n
o
f
t
h
e
p
r
o
p
o
s
ed
r
u
les,
th
e
Ob
j
ec
t Co
n
s
tr
ai
n
t
L
an
g
u
a
g
e
(
OC
L
)
w
ill b
e
ap
p
lied
f
o
r
m
o
r
e
p
r
ec
is
e
r
ep
r
esen
tat
io
n
.
RE
F
E
R
E
NC
E
S
[1
]
K
.
I.
K
o
sh
y
,
e
t
a
l.
,
“
C
a
n
Clo
u
d
C
o
mp
u
ti
n
g
L
e
a
d
t
o
In
c
re
a
s
e
d
S
u
sta
i
n
a
b
il
it
y
o
f
M
o
b
il
e
De
v
ice
s?
.
”
IEE
E
In
tern
a
ti
o
n
a
l
S
y
m
p
o
siu
m
o
n
S
u
st
a
in
a
b
le S
y
ste
m
s an
d
T
e
c
h
n
o
l
o
g
y
(IS
S
S
T
),
M
a
y
2
0
1
2
.
[2
]
Ob
jec
t
M
a
n
a
g
e
m
e
n
t
G
ro
u
p
,
―
Un
i
f
ied
M
o
d
e
li
n
g
L
a
n
g
u
a
g
e
T
M
(O
M
G
UML
)
V
e
rsio
n
.
2
.
5
.
‖
M
a
rc
h
2
0
1
5
.
[3
]
A
n
d
ro
id
M
o
b
il
e
P
latf
o
rm
s,
h
tt
p
s:/
/d
e
v
e
lo
p
e
r.
a
n
d
r
o
i
d
.
c
o
m
.
[4
]
Am
a
z
o
n
W
e
b
S
e
rv
ice
s,
h
tt
p
s://
a
ws
.
a
m
a
z
o
n
.
c
o
m
.
[5
]
Re
tro
f
it
,
h
tt
p
:/
/sq
u
a
re
.
g
it
h
u
b
.
i
o
/re
tro
f
it
/
.
[6
]
In
tro
d
u
c
i
n
g
JSON,
h
tt
p
:/
/w
ww
.
js
o
n
.
o
rg
/
[7
]
Y.
Ju
n
ru
,
e
t
a
l.
,
―
A
rc
h
it
e
c
tu
re
De
sig
n
o
f
th
e
Clad
d
in
g
P
a
rt
M
o
d
e
li
n
g
S
y
ste
m
,
‖
T
EL
KOM
NIKA
(
T
e
l
e
c
o
mm
u
n
ica
ti
o
n
Co
mp
u
t
in
g
El
e
c
tro
n
ics
a
n
d
C
o
n
tr
o
l
)
,
v
ol
.
1
1
,
n
o
.
9
,
S
e
p
.
2
0
1
3
,
p
p
.
5
2
3
7
-
5
2
4
4
.
[8
]
S
.
S
i
n
g
h
,
e
t
a
l.
,
―
A
d
v
a
n
c
e
Bil
li
n
g
a
n
d
M
e
teri
n
g
A
rc
h
it
e
c
tu
re
f
o
r
In
f
ra
stru
c
tu
re
a
s
a
S
e
rv
ic
e
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
r
n
a
l
o
f
Cl
o
u
d
Co
m
p
u
ti
n
g
a
n
d
S
e
rv
ice
s
S
c
ien
c
e
(
IJ
-
CL
OS
ER
)
, v
o
l.
2
,
n
o
.
2
,
A
p
ril
2
0
1
3
,
p
p
.
1
2
3
-
1
3
3
.
[9
]
A
.
Ka
u
r
,
e
t
a
l.
,
―
A
p
p
li
c
a
ti
o
n
o
f
UML
in
Re
a
l
-
T
i
m
e
E
m
b
e
d
d
e
d
S
y
ste
m
s
,
”
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
S
o
ft
wa
r
e
En
g
i
n
e
e
rin
g
&
Ap
p
li
c
a
ti
o
n
s (
IJ
S
EA
)
,
v
o
l.
3
,
n
o
.
2
,
M
a
rc
h
2
0
1
2
.
[1
0
]
K.
M
in
h
y
u
k
,
e
t
a
l
.,
“
Exte
n
d
in
g
U
M
L
me
ta
-
mo
d
e
l
f
o
r
a
n
d
r
o
id
a
p
p
l
ica
ti
o
n
,
”
I
n
tern
a
ti
o
n
a
l
Co
n
f
e
re
n
c
e
o
n
C
o
m
p
u
ter
a
n
d
In
f
o
rm
a
ti
o
n
S
c
ien
c
e
(ICIS
)
,
2
0
1
2
IEE
E/
A
CIS
,
p
p
.
6
6
9
-
6
7
4
.
[1
1
]
A
.
Be
rg
m
a
y
r
,
e
t
a
l
.,
“
UM
L
-
b
a
s
e
d
Clo
u
d
Ap
p
li
c
a
ti
o
n
M
o
d
e
li
n
g
wit
h
L
i
b
ra
rie
s,
Pr
o
fi
les
,
a
n
d
T
e
mp
la
tes
,
”
2
n
d
In
tern
a
ti
o
n
a
l
W
o
rk
sh
o
p
o
n
M
o
d
e
l
-
Driv
e
n
En
g
in
e
e
rin
g
o
n
a
n
d
f
o
r
th
e
Clo
u
d
(Clo
u
d
M
DE),
S
e
p
.
2
0
1
4
.
[1
2
]
M
.
Ya
g
h
o
u
b
i
,
e
t
a
l.
,
―
Dif
f
e
r
e
n
t
P
ro
p
o
se
d
M
o
d
e
ls
to
M
a
p
p
in
g
M
DA
to
RU
P
,
‖
I
n
ter
n
a
t
io
n
a
l
J
o
u
r
n
a
l
o
f
El
e
c
trica
l
a
n
d
Co
m
p
u
ter
E
n
g
i
n
e
e
rin
g
(
IJ
ECE
)
,
v
o
l.
3
,
n
o
.
3
,
Ju
n
e
2
0
1
3
,
p
p
.
3
0
1
-
3
0
6
.
[1
3
]
S
.
V
a
u
p
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4
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.
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5
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A
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―
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u
to
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6
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1
2
.
[1
7
]
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.
Rib
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iro
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De
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t
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In
stit
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to
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r
T
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c
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.
2
0
1
4
.
[1
8
]
F
.
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re
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s
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l.
,
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u
stM
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:
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m
s E
n
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(S
BES
C),
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v
.
2
0
1
6
.
[1
9
]
M
.
L
a
c
h
g
a
r,
e
t
a
l.
,
―
Ra
p
id
M
o
b
il
e
De
v
e
lo
p
m
e
n
t:
Bu
il
d
Rich
,
S
e
n
so
r
-
Ba
se
d
Ap
p
li
c
a
ti
o
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s
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sin
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a
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DA
a
p
p
ro
a
c
h
,
‖
In
ter
n
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t
io
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l
J
o
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o
mp
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ter
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e
a
n
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Ne
two
rk
S
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c
u
rity
,
v
o
l
.
1
7
,
n
o
.
4
,
A
p
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2
0
1
7
.
[2
0
]
[
C.
T
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a
n
a
se
th
,
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t
a
l.
,
“
M
o
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Dr
ive
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De
v
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p
me
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p
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Pr
o
to
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fro
m
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in
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v
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a
ti
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,
”
In
ter
n
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Co
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f
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c
e
o
n
S
o
f
tw
a
re
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e
t
w
o
rk
in
g
(ICS
N).
IEE
E,
2
0
1
6
,
p
p
.
1
-
4
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
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n
g
,
Vo
l.
8
,
No
.
1
,
Feb
r
u
ar
y
201
8
:
5
9
6
–
6
0
4
604
B
I
O
G
RAP
H
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AUTHO
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Do
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K
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sista
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p
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a
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M
o
k
p
o
Na
ti
o
n
a
l
M
a
rit
im
e
Un
iv
e
rsit
y
.
His
re
se
a
rc
h
in
tere
sts
in
c
lu
d
e
d
y
n
a
m
ic
so
f
t
w
a
r
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u
p
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a
ti
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g
,
ru
n
-
ti
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s,
a
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d
m
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.
Evaluation Warning : The document was created with Spire.PDF for Python.