T
E
L
K
O
MN
I
K
A
T
el
eco
m
m
u
n
i
ca
t
i
o
n
,
C
o
m
p
u
t
i
n
g
,
E
l
ect
ro
n
i
cs
a
n
d
C
o
n
t
ro
l
Vo
l
.
1
8
, N
o
.
6
,
D
ecem
b
er
2020
, p
p
.
297
0
~
297
6
I
S
S
N
:
1693
-
6930,
a
c
c
r
e
di
t
e
d F
i
r
s
t
G
r
a
de
by K
e
m
e
nr
i
s
t
e
kdi
kt
i
,
D
e
c
r
e
e
N
o:
21
/
E
/
K
P
T
/
2018
D
O
I
:
10.
12928/
T
E
L
K
O
M
N
I
K
A
.
v1
8
i
6
.
16425
2970
Jou
r
n
al
h
om
e
page
:
ht
t
p:
/
/
j
our
nal
.
uad
.
ac
.
i
d/
i
nde
x
.
php/
T
E
L
K
O
M
N
I
K
A
Sy
s
t
e
m
a
t
i
c
rev
i
e
w
o
n
ev
a
l
ua
t
i
ng
pl
a
n
ni
ng
pro
ces
s
i
n a
g
i
l
e
dev
el
o
pm
ent
m
e
t
h
o
ds
I
qba
l
A
hm
e
d
De
pa
r
tm
e
n
t
of
C
om
pu
te
r
S
c
ie
c
ne
a
nd
E
ng
in
e
e
r
i
ng,
U
ni
v
e
r
si
ty
of
C
hi
tta
go
ng,
B
a
n
gla
de
s
h
A
rt
i
cl
e I
n
f
o
AB
S
T
RACT
A
r
tic
le
h
is
to
r
y
:
R
ecei
v
ed
Ap
r
18,
2020
R
ev
i
s
ed
J
un 26,
2020
A
ccep
t
ed
J
ul
16,
2020
Agi
le
de
ve
l
opm
e
nt m
e
t
ho
ds ha
ve
be
e
n c
a
te
r
i
ng t
he
ne
e
d
o
f
f
a
ste
r
de
l
ive
r
y of
the
ev
er
-
de
m
a
nd
in
g dom
a
in of
s
of
t
wa
r
e
e
ng
ine
e
r
in
g.
The
se
m
e
thod
s a
r
e
a
ble
t
o
de
l
ive
r
va
lue
t
o u
se
r
s a
n
d bu
si
ne
s
se
s
via
fas
t
,
rel
i
a
b
l
e,
a
n
d
rep
ea
t
ab
l
e p
ro
ces
s
.
P
la
nn
in
g r
e
qui
r
e
m
e
n
ts a
nd
pr
oc
e
sse
s ta
ke
s
the
dr
i
vi
n
g se
a
t in a
dy
na
m
ic
e
nv
ir
o
nm
e
n
t
be
c
a
u
se
the
va
lue
pr
o
po
si
ti
on
r
a
p
id
ly
c
ha
nge
s
.
This
pa
pe
r
e
xh
ib
it
s
a
sys
te
m
a
tic
l
ite
r
a
tu
r
e
r
e
vie
w of
pla
nn
in
g pr
oc
e
s
se
s
im
p
le
m
e
nte
d
by va
r
i
ou
s
a
g
ile
m
e
th
od
s i
n or
de
r
t
o f
in
d t
he
be
st
s
ui
te
d a
gi
le
m
e
t
ho
d
in
te
r
m
s of
r
ob
us
t p
la
n
ni
ng.
I
t wa
s f
ou
nd t
ha
t S
c
r
um
is
the
be
st
su
ite
d a
gi
le
m
e
t
ho
d f
or
pla
nn
in
g pr
oc
e
sse
s.
Ke
y
wo
r
d
s
:
A
g
ile
C
r
y
st
a
l
P
l
a
nni
ng
S
cr
u
m
XP
T
his
is
a
n
o
pe
n
ac
c
e
s
s
ar
tic
le
u
nde
r
the
CC
B
Y
-
SA
lic
e
n
se
.
C
or
r
e
s
pon
di
n
g A
u
t
h
or
:
I
qba
l
A
hm
e
d,
D
e
pa
r
t
m
e
nt
of
C
om
put
e
r
S
c
i
e
nc
e
a
nd
E
ngi
ne
e
r
i
ng
,
U
ni
ve
r
s
i
t
y of
C
hi
t
t
a
gong
,
C
hi
t
t
a
gong
-
4331,
B
a
ngl
a
de
s
h.
E
ma
il:
i
q
b
al
.
ah
m
ed
@
cu
.
ac.
b
d
1.
I
NT
RO
DUC
T
I
O
N
A
gi
l
e
i
s
a
s
of
t
w
a
r
e
de
ve
l
opm
e
nt
a
ppr
oa
c
h i
n w
hi
c
h r
e
qui
r
e
m
e
nt
s
a
nd s
ol
ut
i
ons
e
vol
ve
t
hr
ough
th
e
c
o
lla
b
o
r
a
tiv
e
e
f
f
o
r
t o
f
s
ma
ll c
r
o
s
s
-
f
u
n
ct
i
o
n
al
t
eam
s
an
d
t
h
ei
r
cu
s
t
o
m
er
s
(
en
d
u
s
er
s
)
.
T
h
es
e t
eam
ar
e
se
l
f
-
or
ga
ni
z
e
d t
o t
he
m
a
j
or
e
xt
e
nt
a
nd pe
r
f
or
m
a
da
pt
i
ve
pl
a
nni
ng a
nd de
ve
l
opm
e
nt
t
o a
c
hi
e
ve
e
a
r
l
y
de
l
i
ve
r
y [
1
]
.
T
he
f
oc
us
i
s
on
f
l
e
xi
bl
e
a
nd
qui
c
k
r
e
s
pons
e
t
o c
ha
nge
.
T
he
r
e
a
r
e
va
r
i
ous
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hods
a
va
i
l
a
bl
e
de
s
i
gne
d t
o f
or
di
f
f
e
r
e
nt
c
i
r
c
u
m
s
t
a
nc
e
s
.
S
om
e
f
oc
us
on t
he
pr
a
c
t
i
c
e
s
w
hi
l
e
ot
he
r
f
oc
us
on
m
a
na
gi
ng t
he
w
or
k
f
l
ow
s
.
S
om
e
de
a
l
s
be
t
t
e
r
w
i
t
h
r
e
qui
r
e
m
e
nt
s
s
pe
c
i
f
i
c
a
t
i
on a
nd de
ve
l
opm
e
nt
w
he
r
e
a
s so
m
e
s
eek
t
o
co
v
er
t
h
e f
u
l
l
d
ev
el
o
p
m
en
t
l
i
f
e cy
cl
e.
A
pa
r
t
f
r
o
m
f
i
gur
i
ng
out
how
t
he
pr
oduc
t
w
oul
d
be
m
a
de
;
ag
i
l
e
pl
a
nni
ng
a
l
s
o he
l
ps
t
he
s
of
t
w
a
r
e
t
e
a
m
i
n m
e
a
s
ur
i
ng a
nd
c
onve
r
t
i
ng
t
he
us
e
r
s
t
or
i
e
s
i
nt
o
p
r
oduc
t
i
on r
e
a
dy
s
of
t
w
a
r
e
.
T
he
t
a
s
k l
i
s
t
of
a
n
ag
i
le
p
r
o
je
c
t
i
s
te
r
me
d
a
s
M
a
s
t
e
r
S
to
r
y
L
is
t.
I
t c
o
n
ta
in
s
a
ll r
e
q
u
ir
e
me
n
ts
th
a
t c
u
s
to
me
r
s
w
a
n
t in
th
e
ir
r
e
q
u
ir
e
d
s
o
f
tw
a
r
e
.
T
he
c
onve
r
s
i
on s
pe
e
d of
us
e
r
s
t
or
i
e
s
i
nt
o a
s
of
t
w
a
r
e
i
s
t
e
r
m
e
d a
s
t
e
a
m
ve
l
oc
i
t
y.
T
hi
s
t
e
a
m
ve
l
oc
i
t
y i
s
us
e
d f
or
c
a
l
c
ul
a
t
i
ng t
e
a
m
's
pr
odu
c
tiv
ity
a
n
d
f
o
r
s
e
ttin
g
tim
e
lin
e
s
a
n
d
c
o
mmitme
n
ts
[
2
]
.
E
v
e
r
y
a
gi
l
e
m
e
t
hod
ol
ogy
o
r
m
a
y be
a
c
om
bi
na
t
i
on o
f
t
he
s
e
,
r
e
qui
r
e
s
a
bi
r
d v
i
e
w
t
o pl
a
n e
ve
r
y pha
s
e
t
ha
t
t
he
t
e
a
m
w
oul
d be
f
a
c
i
ng.
T
hi
s
pl
a
nni
ng a
l
s
o he
l
ps
i
n m
a
ki
ng
c
om
m
i
t
m
e
nt
s
,
r
e
s
our
c
e
pl
a
nni
ng a
nd a
llo
c
a
tio
n
[
3
]
.
T
h
e p
ap
er
p
r
es
en
t
s
a s
y
s
t
em
at
i
c l
i
t
er
at
u
r
e
r
ev
i
ew
(
S
L
R
)
o
f
v
ar
i
o
u
s
ag
i
l
e
d
ev
el
o
p
m
en
t
m
et
h
o
d
s
i
n
c
ont
e
xt
of
p
l
a
nni
ng pr
oc
e
s
s
.
S
e
c
t
i
on
2
pr
e
s
e
nt
s
t
he
m
e
t
hodol
ogy w
hi
c
h
i
nc
l
ude
s
de
ve
l
opm
e
nt
of
r
e
s
e
a
r
c
h
que
s
t
i
ons
a
s
w
e
l
l
.
I
n s
e
c
t
i
on 3,
w
e
di
s
c
us
s
va
r
i
ous
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hods
w
i
t
h r
e
s
pe
c
t
t
o
pl
a
nni
ng
pr
oc
e
s
s
e
s
.
S
e
c
t
i
on 4,
c
onc
l
ude
s
t
he
pa
pe
r
.
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
S
ys
t
em
a
t
i
c r
evi
e
w
o
n
e
v
al
uat
i
ng pl
anni
ng
pr
oc
e
s
s
i
n agi
l
e
de
v
e
l
opm
e
nt
m
e
t
hods
(
I
qbal
A
hm
e
d
)
2971
2.
R
ES
EA
R
C
H
M
ETH
O
D
S
I
n
o
u
r
r
es
ear
ch
,
w
e h
av
e u
s
ed
s
y
s
te
ma
tic
r
e
vi
e
w
t
o a
na
l
ys
e
t
he
c
ur
r
e
nt
s
t
udi
e
s
,
f
i
ndi
ngs
a
nd c
om
pa
r
i
ng
th
e
r
e
s
u
lts
.
I
n
th
is
r
e
v
ie
w
,
w
e
ha
ve
c
ol
l
e
c
t
e
d a
nd a
na
l
ys
e
d da
t
a
t
hr
ough m
ul
t
i
pl
e
e
xi
s
t
i
ng
r
e
s
e
a
r
c
h pa
pe
r
s
a
nd
s
t
udi
e
s
.
W
e
ha
ve
f
or
m
ul
a
t
e
d m
ul
t
i
pl
e
r
e
s
e
a
r
c
h que
s
t
i
ons
a
nd ha
ve
m
a
de
f
i
ndi
ngs
t
o a
ns
w
e
r
t
hos
e
.
T
a
bl
e
1 l
i
s
t
t
he
f
i
na
l
s
e
l
e
c
t
i
on of
pr
e
vi
ous
s
t
udi
e
s
a
na
l
ys
e
d i
n t
hi
s
w
or
k.
Ta
b
l
e 1
.
R
el
at
ed
st
u
d
i
e
s
a
na
l
ys
e
d i
n t
he
s
t
udy
ID
R
e
fe
rre
d
A
u
t
h
o
rs
R
ef
er
en
ce
A
gi
l
e
M
e
t
hods
R
es
ear
ch
D
a
te
S1
T
r
a
a
,
J
oha
n W
A
[4
]
R
U
P,
M
SF
2006
S2
P
e
ka
, A
br
a
ha
m
s
s
on,
J
uha
ni
W
a
r
s
t
a
, M
i
kko T
. S
i
pone
n
a
nd J
us
s
i
R
onka
i
ne
n
[5
]
A
S
D
, C
r
ys
t
a
l
, D
S
D
M
, X
P
,
F
DD,
S
c
r
um
, A
M
, I
S
D
a
nd P
P
2003
S3
K
ni
be
r
g, H
e
nr
i
k
[6
]
X
P,
LEA
N
, F
D
D
, C
r
ys
t
a
l
,
AS
D,
S
c
r
u
m
,
DS
DM
2015
S4
A
c
hi
m
K
a
m
pke
r
, A
l
e
xa
nde
r
M
e
c
knbor
g, P
e
t
e
r
B
ur
ggr
a
f
a
nd T
hom
a
s
N
e
t
z
[7
]
N
/A
2013
S5
G
ul
A
hm
e
d, T
a
r
i
q R
a
hi
m
a
nd N
a
w
a
z
B
r
ohi
[8
]
X
P
, S
c
r
um
, R
U
P
2014
S6
J
.
H
ig
h
s
mith
[9
]
X
P
, C
r
ys
t
a
l
, S
c
r
um
, D
S
D
M
,
L
E
AN,
AS
D,
F
DD
2002
S7
M
.
M
in
a
r
ik
[
10]
S
c
ru
m
2004
S8
D
. W
a
dde
l
l
a
nd A
. S
oha
l
[
11]
N
/A
1998
S9
F
.
N
eal
an
d
R
.
V
acl
av
[
12]
N
/A
2007
S1
0
G
ur
p
r
e
e
t
S
i
ngh M
a
t
ha
r
u
, A
nj
u M
i
s
hr
a
, H
a
r
m
e
e
t
S
i
ngh
a
nd P
r
i
ynka
U
pa
dhya
y
[
13]
X
P
, S
c
r
um
, K
a
nba
n
2015
S1
1
J
oa
o M
. a
nd
M
. A
l
e
m
e
i
da
[
14]
X
P,
Sc
r
u
m
2010
S1
2
F
a
i
z
a
A
nw
e
r
, S
ha
bi
b A
f
t
a
b, S
ye
d S
ha
h M
uha
m
m
a
d S
ha
h
an
d
U
s
m
an
Wah
eed
[
15]
X
P,
Sc
r
u
m
2017
S1
3
G
.
Wag
en
aar
,
S
i
et
s
e
O
v
er
b
eek
,
G
ar
m
L
u
cas
s
en
,
S
j
aak
B
r
i
nkke
m
pe
r
a
nd K
ur
t
S
c
hne
i
de
r
[
16]
N
/A
2018
S1
4
T
. S
. M
e
nde
s
, M
a
r
i
o A
ndr
e
de
F
. F
a
r
i
a
s
,
M
. M
e
ndon
c
a
,
H
. F
. S
oa
r
e
s
, M
. K
a
l
i
now
s
ki
a
nd
R
. O
. S
pi
nol
a
[
17]
N
/A
2016
S1
5
M
ykl
e
bus
t
, T
hor
,
T
. S
t
a
l
ha
ne
, G
. K
. H
a
ns
s
e
n, T
. W
e
i
n
a
nd B
. H
a
ugs
e
t
[
18]
S
c
ru
m
2014
S1
6
K
a
nw
a
l
, F
a
r
i
a
, K
. B
a
s
hi
r
, a
nd A
H
a
i
de
r
A
l
i
[
19]
N
/A
2014
S1
7
S
t
e
t
t
i
na
, C
hr
i
s
t
oph J
oha
nn a
nd E
gbe
r
t
K
r
oon
[
20]
N
/A
2013
S1
8
S
t
e
t
t
i
na
, C
hr
i
s
t
oph J
oha
nn a
nd E
gbe
r
t
K
r
oon
[
21]
N
/A
2011
S1
9
S.
M
e
r
z
ouk, S
. E
l
ha
di
, H
. E
nna
j
i
, A
bde
l
a
z
i
z
M
a
r
z
a
k a
nd
N
aw
al
S
ael
[
22]
X
P,
Sc
r
u
m
,
DS
DM
,
F
DD,
K
a
nba
n, C
r
ys
t
a
l
, A
S
D
2017
S2
0
S
h
e
lly
[
23]
XP
,
S
c
r
u
m
,
DS
DM
,
F
DD,
AS
D
2015
S2
1
P
. A
br
a
ha
m
s
s
on, O
. S
a
l
o, J
.
R
onka
i
ne
n a
nd
J
. W
a
r
s
t
a
[
24]
S
c
r
um
, R
U
P
, A
S
D
,
C
ry
s
t
a
l
2002
S2
2
Ow,
S
i
e
w
[
25]
S
c
ru
m
2009
S2
3
G
. P
a
pa
dopoul
ous
[
26]
N
/A
2015
S2
4
R
. H
oda
, N
. S
a
l
l
e
h a
nd J
. G
r
undy
[
27]
N
/A
2018
S2
5
A
L
o
zez
-
A
l
car
r
i
a,
A
.
O
l
v
ar
es
-
V
i
c
e
nt
e
a
nd F
. P
oz
a
-
V
ilc
h
e
s
[
28]
S
c
r
um
, K
a
nba
n
2019
2.
1
.
O
b
je
c
ti
v
e
s
o
f
th
e
s
tu
d
y
T
he
s
t
udy ha
s
t
w
o obj
e
c
t
i
ve
s
:
-
T
o r
e
vi
e
w
pl
a
nni
ng p
r
oc
e
s
s
e
s
a
nd r
e
qui
r
e
m
e
nt
s
i
n va
r
i
ous
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hods
-
T
o i
de
nt
i
f
y be
s
t
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hod(
s
)
w
i
t
h r
e
s
pe
c
t
t
o pl
a
nni
ng
pr
oc
e
s
s
.
2.
2
.
R
es
ea
rch
que
s
t
i
o
ns
T
h
e r
es
ear
c
h
q
u
es
t
i
o
n
s
ar
e m
an
d
at
o
r
y
t
o
d
ev
el
o
p
a b
as
e f
o
r
S
L
R
.
We h
av
e ex
t
r
act
ed
s
o
m
e r
es
ear
ch
que
s
t
i
ons
t
ha
t
w
i
l
l
be
a
ns
w
e
r
e
d i
n
t
hi
s
r
e
s
e
a
r
c
h.
T
he
f
i
ndi
ngs
a
nd
r
e
s
ul
t
s
of
t
hi
s
s
t
udy w
i
l
l
be
ba
s
e
d on t
he
s
e
que
s
t
i
ons
w
hi
c
h a
r
e
gi
ve
n i
n
t
he
T
a
b
l
e
2.
T
ab
l
e 2
.
R
es
ear
ch
que
s
t
i
ons
of
t
he
s
t
udy
R
es
ear
ch
Q
u
es
t
i
o
n
s
M
o
tiv
a
tio
n
R
Q
1:
W
ha
t
a
r
e
t
he
obj
e
c
t
i
ve
s
of
pl
a
nni
ng i
n va
r
i
ous
A
gi
l
e
m
e
t
hods
?
T
o i
de
nt
i
f
y t
he
di
f
f
e
r
e
nt
obj
e
c
t
i
ve
s
of
pl
a
nni
ng pha
s
e
a
nd t
he
i
r
i
m
pa
c
t
on ove
r
a
l
l
de
l
i
ve
r
y.
R
Q
2:
W
he
n pl
a
nni
ng i
s
pe
r
f
or
m
e
d i
n va
r
i
ous
A
gi
l
e
m
e
t
hods
?
T
o i
de
nt
i
f
y w
he
n t
he
pl
a
nni
ng s
houl
d be
done
. I
s
i
t
a
one
t
i
m
e
o
r
c
ont
i
nuous
a
c
t
i
vi
t
y.
R
Q
3:
H
ow
t
he
doc
um
e
nt
e
d out
c
om
e
of
pl
a
nni
ng i
s
di
f
f
e
r
e
nt
i
n
va
r
i
ous
A
gi
l
e
m
e
t
hods
?
T
o i
de
nt
i
f
y t
he
doc
um
e
nt
e
d out
c
om
e
of
t
he
pl
a
nni
ng s
o t
ha
t
v
al
i
d
at
i
o
n
can
b
e ach
i
ev
ed
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SSN
:
1693
-
6930
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
,
Vo
l
.
1
8
, N
o
.
6
,
D
ecem
b
er
2020
:
297
0
-
297
6
2972
2.
3
.
S
ea
rch
s
t
ra
t
eg
i
es
T
o
g
et
t
h
e m
ax
i
m
u
m
r
el
ev
an
t
s
t
u
d
i
es
,
w
e
u
s
ed
a s
ear
ch
s
t
r
at
eg
y
[
2
9
-
3
1
]
.
S
ear
ch
s
t
r
at
eg
i
es
ar
e w
ay
s
of
us
i
ng s
e
a
r
c
h
t
e
r
m
s
i
n
t
e
r
m
s
o
f
f
i
ndi
ng
r
e
qui
r
e
d i
nf
o
r
m
a
t
i
on
f
r
om
s
e
a
r
c
h t
ool
s
,
s
uc
h a
s
s
e
a
r
c
h
e
ngi
ne
s
,
t
he
l
i
br
a
r
y
c
a
t
a
l
ogue
a
nd onl
i
ne
da
t
a
ba
s
e
s
.
T
hi
s
s
t
r
a
t
e
gy c
ons
i
s
t
s
of
t
he
f
ol
l
ow
i
ng
c
om
pone
nt
s
.
2.
3.
1
.
S
ea
rch
m
e
th
o
d
S
c
i
e
nc
e
D
i
r
e
c
t
,
I
E
E
E
E
xp
l
or
e
,
S
pr
i
nge
r
L
i
nk,
S
c
opu
s
,
W
i
l
e
y O
nl
i
ne
L
i
br
a
r
y a
nd A
C
M
D
i
gi
t
a
l
L
i
br
a
r
y
w
er
e s
ear
ch
ed
m
an
u
al
l
y
t
o
ex
t
r
act
t
h
e
r
el
ev
an
t
ex
i
s
t
i
n
g
s
t
u
d
i
es
.
T
o
ach
i
ev
e g
o
o
d
s
er
ach
r
es
u
l
t
s
,
i
t
i
s
n
eces
s
ar
y
t
o us
e
s
e
a
r
c
h s
t
r
a
t
e
gi
e
s
.
S
om
e
of
our
c
om
m
on
s
er
ach
s
t
ar
t
eg
i
es
ar
e
p
ar
en
t
h
es
i
s
,
p
h
r
as
e
s
ear
ch
i
n
g
,
t
r
unc
a
t
i
on
,
w
i
l
d
car
d
s
,
a
nd
f
ie
ld
s
ear
ch
i
n
g
.
2.
3.
2
.
S
ea
rch
t
erm
s
I
n our
s
t
udy,
t
he
s
e
a
r
c
h t
e
r
m
s
ha
ve
be
e
n m
a
de
t
hr
o
ugh t
he
b
l
e
nd out
of
pr
i
m
a
r
y
t
e
r
m
s
t
ha
t
a
r
e
ut
i
l
i
z
e
d
i
n
t
h
e s
u
b
j
ect
o
f
t
h
e
ex
p
l
o
r
at
i
o
n
an
d
al
l
t
h
e ap
p
l
i
ca
b
l
e t
er
m
s
an
d
cat
ch
p
h
r
as
es
.
We h
av
e s
ear
ch
ed
k
ey
w
o
r
d
s
a
s
"
pl
a
nni
ng i
n"
,
c
onc
a
t
e
na
t
e
d w
i
t
h t
he
ag
i
l
e
p
r
o
c
e
ss
na
m
e
.
N
ot
onl
y
t
hi
s
but
w
e
us
e
d que
s
t
i
on
-
t
ype
ke
yw
or
ds
t
oo
.
W
e
ha
ve
a
l
s
o us
e
d t
he
na
m
e
s
of
pl
a
nni
ng
pha
s
e
s
of
t
he
a
gi
l
e
m
e
t
hodol
ogi
e
s
t
o
g
et
accu
r
at
e
an
d
cr
y
s
t
al
-
cl
ear
r
es
u
l
t
s
.
S
o
m
e ex
am
p
l
es
i
n
cl
u
d
e:
−
P
l
a
nni
ng i
n
ex
t
r
em
e p
r
o
g
r
am
m
i
n
g
.
−
H
ow
t
o pl
a
n us
i
ng S
c
r
um
?
−
S
pr
i
nt
pl
a
nni
ng
m
e
e
t
i
ng
.
−
P
l
a
nni
ng
poke
r
.
−
C
r
y
s
ta
l
f
oc
us
pha
s
e
.
−
AS
D
s
pe
c
ul
a
t
i
on pha
s
e
.
2.
3.
3
.
D
at
a
s
o
u
rces
T
he
r
e
s
e
a
r
c
h s
our
c
e
s
a
r
e
f
ound
t
hr
ough
oxf
or
d
pr
e
s
s
,
I
E
E
E
a
n
d
mu
ltip
le
in
te
r
n
a
tio
n
a
l
j
our
na
l
s
,
G
oogl
e
S
c
hol
a
r
s
a
nd
R
es
ear
ch
G
at
e.
We
en
s
u
r
e t
h
at
n
o
co
u
n
t
er
f
ei
t
s
o
u
r
ces
ar
e
u
s
ed
i
n
o
u
r
s
t
u
d
y
.
F
i
g
u
r
e 1
de
m
ons
t
r
a
t
e
t
he
t
ype
of
s
t
udy,
w
e
us
e
d i
n our
s
t
udy
.
W
e
e
xc
l
ude
d t
he
s
t
udi
e
s
w
hi
c
h a
r
e
not
di
r
e
c
t
l
y o
r
i
ndi
r
e
c
t
l
y
r
el
ev
an
t
t
o
o
u
r
r
es
ear
ch
t
o
p
i
c.
T
h
e r
ej
ect
i
o
n
o
f
r
e
s
ear
ch
pa
pe
r
s
de
pe
nde
d on m
or
a
l
s
t
a
nda
r
ds
a
nd t
o c
he
c
k
w
he
t
he
r
t
he
f
oc
us
e
d s
t
udy i
s
goi
ng a
l
ong t
o t
he
c
a
t
c
hphr
a
s
e
s
,
pa
r
a
m
e
t
e
r
s
,
a
nd phr
a
s
i
ngs
t
ha
t
a
r
e
s
i
gni
f
i
c
a
nt
t
o
t
hi
s
e
xpl
or
a
t
i
on.
T
he
s
t
udi
e
s
w
e
r
e
e
xc
l
ude
d
f
r
om
o
ur
s
t
udy w
he
n:
−
U
nve
r
i
f
i
e
d or
una
ut
he
nt
i
c
w
e
b l
i
nks
.
−
P
ap
er
s
h
av
e w
eak
ev
i
d
en
ces
.
−
Weak
an
d
o
u
t
d
at
ed
r
ef
er
en
ces
.
−
No
n
-
p
er
cei
v
ed
co
n
f
er
en
ces
.
−
O
bs
c
ur
e
a
ut
hor
s
.
2
.
3
.
4
.
I
n
cl
u
s
i
o
n
a
n
d
ex
cl
u
s
i
o
n
cri
t
eri
a
T
o
id
e
n
ti
f
y
th
e
r
e
le
v
a
n
t s
tu
d
ie
s
,
in
c
lu
s
io
n
c
r
ite
r
ia
is
u
s
e
d
.
I
t
is
th
e
q
u
a
lif
ic
a
tio
n
c
r
i
te
r
ia
f
o
r
a
n
y
j
our
na
l
ar
t
i
cl
e o
r
r
es
ear
ch
p
ap
er
t
o
i
n
co
r
p
o
r
at
e
i
n
t
o
t
h
i
s
ex
p
l
o
r
at
i
o
n
.
I
n
co
r
p
o
r
at
i
o
n
cr
i
t
er
i
a m
u
s
t
r
eact
t
o
t
h
e
t
ar
g
et
s
o
f
t
he
s
t
udy.
M
a
ny e
xi
s
t
i
ng s
t
udi
e
s
w
e
r
e
r
e
vi
e
w
e
d
a
nd e
xpl
or
e
d
f
or
r
e
l
e
va
nt
a
nd
us
e
f
ul
da
t
a
w
hi
c
h
r
a
ng
e
s
f
r
om
co
n
f
er
en
ces
,
w
eb
s
i
t
es
,
b
o
o
k
s
an
d
ar
t
i
cl
es
.
T
h
e s
t
u
d
y
m
at
er
i
al
r
es
ear
ch
p
ap
er
s
w
er
e i
n
cl
u
d
ed
w
h
en
:
−
A
u
t
h
en
t
i
c an
d
o
f
f
i
ci
al
w
eb
s
i
t
es
.
−
E
ach
ar
t
i
cl
e o
r
p
ap
er
h
ad
m
at
ch
i
n
g
r
es
ear
ch
p
ar
am
et
er
s
an
d
k
ey
w
o
r
d
s
.
−
S
t
udi
e
s
by a
ut
he
nt
i
c
a
nd know
n
a
ut
hor
s
.
S
t
udy s
e
l
e
c
t
i
on
F
i
gur
e
2
de
m
ons
t
r
a
t
e
s
no.
of
s
t
udi
e
s
i
nc
l
ude
d by e
a
c
h s
t
a
ge
of
our
S
L
R
.
T
he
f
i
l
t
e
r
i
ng of
pa
pe
r
s
w
e
r
e
done
by i
nc
l
us
i
on/
e
xc
l
us
i
on c
r
i
t
e
r
i
a
by
t
he
f
ol
l
ow
i
ng w
a
y:
−
P
ha
s
e
0:
3198 r
e
l
e
va
nt
pa
pe
r
s
w
e
r
e
f
ound
by s
e
a
r
c
hi
ng s
t
r
i
ng on
s
i
x di
gi
t
a
l
a
f
or
e
m
e
nt
i
one
d l
i
br
a
r
i
e
s
.
−
P
ha
s
e
1:
W
e
s
e
l
e
c
t
e
d 408 pa
pe
r
s
by t
hi
s
pha
s
e
.
I
n t
hi
s
pha
s
e
,
w
e
r
e
a
d t
he
t
i
t
l
e
a
nd ke
yw
or
ds
of
t
he
pa
pe
r
s
a
nd f
i
l
t
e
r
e
d t
he
s
e
l
e
c
t
i
on.
I
f
t
he
r
e
w
a
s
a
ny
doubt
r
e
ga
r
di
ng t
he
r
e
t
r
i
e
ve
d pa
pe
r
s
,
w
e
t
r
a
ns
f
e
r
r
e
d
t
he
dou
bt
f
ul
pa
pe
r
s
t
o ne
xt
s
e
l
e
c
t
i
on
r
ound
f
or
a
not
he
r i
n
-
de
pt
h
i
nve
s
t
i
ga
t
i
on a
s
i
t
w
a
s
i
m
pos
s
i
bl
e
t
o
a
na
l
ys
e
t
he
pa
pe
r
s
by r
e
a
di
ng ke
yw
or
ds
a
nd
t
i
t
l
e
s
.
−
P
h
as
e 2
:
T
h
e
ab
s
t
r
act
s
an
d
co
n
cl
u
s
i
o
n
s
o
f
t
h
e s
el
ect
ed
s
t
u
d
i
es
w
er
e an
al
y
s
ed
t
o
m
ak
e s
u
r
e
t
h
at
al
l
w
er
e
r
el
ev
an
t
t
o
o
u
r
S
L
R
'
s
o
b
j
ect
i
v
e.
T
h
e s
el
ect
ed
p
ap
er
s
c
ount
w
e
nt
t
o 150 w
he
n w
e
a
ppl
i
e
d t
he
i
nc
l
us
i
on a
nd
e
xc
l
us
i
on c
r
i
t
e
r
i
a
on t
he
a
bs
t
r
a
c
t
s
a
nd r
e
s
ul
t
s
of
t
h
e
i
nc
l
ude
d pa
pe
r
s
.
−
P
ha
s
e
3:
T
he
f
i
na
l
s
e
l
e
c
t
i
on r
ound
,
i
nc
l
ude
s
t
he
r
e
a
di
ng of
f
ul
l
t
e
xt
of
t
he
i
nc
l
ude
d
s
t
udi
e
s
by
s
e
c
ond p
ha
s
e
.
A
pa
pe
r
w
a
s
i
nc
l
ude
d
i
n
o
u
r
S
L
R
i
f
i
t
m
et
al
l
i
n
cl
u
s
i
o
n
cr
i
t
e
r
i
a.
P
ap
er
s
,
t
h
at
w
er
e
l
es
s
t
h
an
6
p
ag
es
,
o
r
p
ap
er
s
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
S
ys
t
em
a
t
i
c r
evi
e
w
o
n
e
v
al
uat
i
ng pl
anni
ng
pr
oc
e
s
s
i
n agi
l
e
de
v
e
l
opm
e
nt
m
e
t
hods
(
I
qbal
A
hm
e
d
)
2973
w
h
o
s
e co
m
p
l
et
e t
ex
t
s
w
er
e u
n
av
ai
l
ab
l
e
d
u
e t
o
l
i
m
i
t
e
d
acces
s
o
r
i
r
r
el
ev
an
t
p
ap
er
s
w
er
e
ex
cl
u
d
ed
.
F
u
r
t
h
er
m
o
r
e,
t
he
qua
l
i
t
y of
s
t
udi
e
s
w
a
s
a
l
s
o a
na
l
ys
e
d t
o e
xc
l
ude
l
o
w
qua
l
i
t
y pa
pe
r
s
due
t
o
r
e
put
a
t
i
on
ve
nue
s
e
t
c
.
F
i
na
l
l
y,
25 pa
pe
r
s
w
e
r
e
s
e
l
e
c
t
e
d by t
hi
s
l
a
s
t
ph
a
s
e
.
A
c
r
i
t
i
c
a
l
pi
e
c
e
of
t
he
s
t
udy i
nc
l
us
i
on,
da
t
a
e
xt
r
a
c
t
i
on a
nd s
ynt
he
s
i
s
pha
s
e
s
ha
ve
be
e
n done
by t
he
f
i
r
s
t
a
ut
hor
.
I
n
e
ve
r
y pha
s
e
,
w
e
r
e
c
or
de
d t
he
r
e
a
s
ons
o
f
i
nc
or
por
a
t
i
on o
r
p
r
ohi
bi
t
i
on
c
hoi
c
e
f
or
e
ve
r
y one
o
f
t
he
pa
pe
r
s
.
T
he
s
e
r
e
a
s
ons
w
e
r
e
t
he
n
us
e
d f
o
r
r
e
a
s
s
e
s
s
m
e
n
a
nd di
s
c
us
s
i
on w
i
t
h ot
he
r
a
ut
hor
s
t
o de
t
e
r
m
i
ne
i
f
a
pa
pe
r
s
houl
d be
i
nc
or
por
a
t
e
d or
not
.
A
doubl
e
-
ch
eck
,
w
h
i
ch
us
e
d a
r
a
ndom
num
be
r
of
i
nc
l
ude
d
pa
pe
r
s
f
o
r
e
ve
r
y s
t
e
p w
a
s
done
by t
he
s
e
c
ond a
ut
hor
F
i
gur
e
1.
T
ype
s
o
f
va
r
i
ous
da
t
a
s
our
c
e
s
F
i
g
u
r
e 2
.
P
h
as
e o
f
t
h
e s
ear
ch
p
r
o
ces
s
2.
3.
5
.
D
at
a
ex
t
ra
ct
i
o
n
a
n
d
s
y
n
t
h
es
i
s
T
h
e r
el
ev
an
t
i
n
f
o
r
m
at
i
o
n
w
as
ex
t
r
act
ed
f
r
o
m
t
h
e s
el
ect
ed
p
ap
er
s
.
T
h
i
s
i
nf
o
r
m
a
t
i
on
i
s
ba
s
e
d on
da
t
a
i
t
e
m
s
t
ha
t
w
oul
d
he
l
p i
n
a
ns
w
e
r
i
ng t
he
S
L
R
's
r
e
s
e
a
r
c
h que
s
t
i
ons
.
T
he
s
e
pa
r
a
t
e
d da
t
a
w
a
s
put
a
w
a
y i
n
M
S
E
xc
e
l
S
pr
e
a
ds
he
e
t
f
or
f
u
r
t
he
r
i
nve
s
t
i
ga
t
i
on.
D
e
s
c
r
ip
tiv
e
A
n
a
ly
s
is
w
a
s
u
s
e
d
to
a
n
a
ly
s
e
th
e
d
a
ta
ite
ms
,
me
n
tio
n
e
d
in
T
a
b
l
e
3
.
I
n
or
de
r
t
o
i
de
nt
i
f
y
t
h
e ag
i
l
e m
et
h
o
d
i
n
t
h
e s
el
ect
ed
p
ap
er
s
,
w
e u
s
ed
d
at
a i
t
em
D
5
.
F
i
v
e s
t
ep
s
o
f
t
h
em
at
i
c an
al
y
s
i
s
[
3
2
-
35]
w
a
s
f
ol
l
ow
e
d a
s
de
t
a
i
l
e
d be
l
ow
:
−
F
am
i
l
i
ar
i
zi
n
g
w
i
t
h
d
at
a:
w
e en
d
eav
o
r
ed
t
o
p
er
u
s
e an
d
an
al
y
s
e t
h
e ex
t
r
i
cat
ed
r
es
ear
ch
t
y
p
es
t
o
s
h
ap
e
t
he
unde
r
l
yi
ng t
hough
t
s
f
or
a
na
l
ys
i
s
.
−
G
en
er
at
i
n
g
i
n
i
t
i
al
co
d
es
:
i
n
t
h
e
s
eco
n
d
s
t
ep
w
e ex
t
r
i
cat
ed
ag
i
l
e
t
e
c
hni
que
s
f
r
om
e
a
c
h
pa
pe
r
.
I
t
ought
t
o be
not
i
c
e
d t
h
at
n
o
w
an
d
ag
ai
n
,
w
e n
eed
ed
t
o
r
ech
eck
t
h
e p
ap
er
s
.
−
S
e
a
r
c
hi
ng f
or
t
he
m
e
s
:
f
or
e
ve
r
y da
t
a
i
t
e
m
,
w
e
e
nd
e
a
vor
e
d t
o c
ons
ol
i
da
t
e
di
ve
r
s
e
s
t
a
r
t
i
ng c
ode
s
pr
od
uc
e
d
f
r
om
t
he
s
e
c
ond s
t
e
p i
nt
o pot
e
nt
i
a
l
t
he
m
e
s
.
−
R
e
vi
e
w
i
ng a
nd r
e
f
i
ni
ng
t
he
m
e
s
:
t
he
r
e
s
e
a
r
c
h t
ype
a
nd a
gi
l
e m
et
h
o
d
s
f
r
o
m
3
r
d
s
t
ep
w
as
v
er
i
f
i
ed
ag
ai
n
s
t
each
ot
he
r
t
o a
c
know
l
e
dge
w
ha
t
t
he
m
e
s
ha
d t
o be
c
ons
ol
i
da
t
e
d w
i
t
h ot
he
r
s
or
e
xc
l
ude
d
(
e
.
g.
,
l
a
c
k of
e
nough e
vi
de
nc
e
)
.
−
D
ef
i
n
i
n
g
an
d
n
am
i
n
g
t
h
em
es
:
t
h
r
o
u
g
h
t
h
i
s
s
t
ep
,
w
e ch
ar
act
er
i
zed
cl
ear
an
d
co
m
p
act
n
am
es
f
o
r
each
e
xpl
or
a
t
i
on t
ype
.
T
ab
l
e 3
.
R
el
at
ed
st
u
d
i
e
s
i
n t
he
w
or
k
#
D
at
a I
t
em
D
e
s
c
r
ip
tio
n
R
Qs
D1
A
ut
hor
(
s
)
T
he
a
ut
hor
(
s
)
of
t
he
pa
pe
r
D
em
o
g
r
ap
i
c D
at
a
D2
Y
ear
T
he
ye
a
r
of
t
he
publ
i
c
a
t
i
on of
t
he
pa
pe
r
D
em
o
g
r
ap
i
c D
at
a
D3
T
itle
T
h
e T
i
t
l
e o
f
t
h
e P
ap
er
D
e
m
ogr
a
phi
c
D
a
ta
D4
P
ubl
i
c
a
t
i
on T
ype
T
he
t
ype
of
publ
i
c
a
t
i
on (
e
.g. j
our
na
l
pa
pe
r
)
D
em
o
g
r
ap
i
c D
at
a
D5
A
gi
l
e
M
e
t
hodol
ogy
T
he
a
gi
l
e
m
e
t
hodol
ogy f
oc
us
e
d i
n t
he
pa
pe
r
D
em
o
g
r
ap
i
c D
at
a
D6
O
bj
e
c
t
i
ve
s
of
pl
a
nni
ng i
n va
r
i
ous
A
gi
l
e
m
e
t
hods
R
Q1
D7
T
ime
o
f
pl
a
nni
ng i
n va
r
i
ous
A
gi
l
e
m
e
t
hod
R
Q2
D8
D
oc
um
e
nt
e
d out
c
om
e
of
pl
a
nni
ng i
n va
r
i
ous
A
gi
l
e
m
e
t
hods
R
Q3
2.
3.
6
.
R
e
su
l
t
s
W
e
hi
ghl
i
ght
t
he
r
e
s
ul
t
s
,
e
xt
r
a
c
t
e
d f
r
om
t
he
a
f
or
e
m
e
nt
i
one
d a
c
t
i
vi
t
i
e
s
i
n t
he
f
ol
l
ow
i
ng s
ubs
e
c
t
i
ons
.
T
he
s
e
r
e
s
ul
t
s
do ha
ve
s
om
e
m
i
ni
m
a
l
i
nt
e
r
pr
e
t
a
t
i
ons
of
us
w
hi
c
h
w
e
w
i
l
l
r
e
f
l
e
c
t
i
n t
he
di
s
c
us
s
i
ons
s
e
c
t
i
o
n.
H
e
r
e
,
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SSN
:
1693
-
6930
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
,
Vo
l
.
1
8
, N
o
.
6
,
D
ecem
b
er
2020
:
297
0
-
297
6
2974
w
e
a
r
e
onl
y
m
e
nt
i
oni
ng
de
m
og
r
a
phi
c
a
nd
r
e
s
e
a
r
c
h
d
e
s
ig
n
a
ttr
ib
u
te
s
in
f
o
r
ma
tio
n
:
s
tu
d
ie
s
d
is
tr
ib
u
tio
n
,
r
e
s
e
a
r
c
h
t
ype
s
,
s
t
udy c
ont
e
xt
a
nd da
t
a
a
na
l
ys
i
s
t
ype
.
S
t
udi
e
s
d
is
tr
ib
u
tio
n
O
ne
of
t
he
ke
y a
s
pe
c
t
s
of
t
he
i
nf
or
m
a
t
i
on s
our
c
e
s
i
n S
L
R
i
s
t
he
de
m
ogr
a
phi
c
i
nf
or
m
a
t
i
on.
W
he
n ne
w
r
es
ear
ch
er
s
t
ak
e u
p
t
h
e
t
as
k
o
f
co
n
d
u
ct
i
n
g
r
es
ear
ch
o
n
a p
a
r
t
i
cu
l
ar
t
o
p
i
c,
i
t
s
er
v
es
as
v
i
t
al
i
n
f
o
r
m
at
i
o
n
an
d
t
h
er
ef
o
r
e
c
i
t
i
ng i
nf
or
m
a
t
i
on
on t
he
t
ype
s
a
nd ve
nue
s
of
r
e
s
e
a
r
c
h pa
pe
r
s
unde
r
r
e
vi
e
w
i
s
ve
r
y he
l
p
f
ul
.
I
n
F
i
gur
e
3
t
h
er
e i
s
a
s
um
m
a
r
y of
25 pa
pe
r
s
publ
i
s
he
d f
r
om
1998
t
o
2019
,
a
s
t
he
y a
r
e
di
s
t
r
i
but
e
d a
l
ong
t
he
ye
a
r
.
F
i
gur
e
3.
N
um
be
r
of
s
el
ect
ed
s
t
udi
e
s
publ
i
s
he
d pe
r
ye
a
r
3.
P
LA
N
N
I
N
G
I
N
A
G
I
LE D
EV
ELO
P
M
EN
T M
E
TH
O
D
S
By
a
gi
l
e
pl
a
nni
ng
,
w
e cal
cu
l
at
e es
t
i
m
at
es
an
d
r
e
s
o
u
r
ces
t
h
at
w
o
u
l
d
b
e
r
eq
u
i
r
ed
f
o
r
t
h
e s
o
f
t
w
ar
e
pr
oj
e
c
t
.
T
he
P
l
a
nni
ng pha
s
e
he
l
ps
t
he
de
ve
l
opm
e
n
t
t
e
a
m
a
nd s
t
a
ke
hol
de
r
s
t
o di
s
c
ove
r
uni
de
nt
i
f
i
e
d
r
i
s
ks
w
ha
t
co
u
l
d
ar
i
s
e d
u
r
i
ng
s
of
t
w
a
r
e
p
r
oj
e
c
t
de
ve
l
opm
e
nt
,
de
pl
oym
e
nt
a
nd
m
a
i
nt
e
na
nc
e
.
T
hi
s
pha
s
e
c
a
n
a
l
s
o be
m
a
de
ite
r
a
tiv
e
to
p
la
n
in
d
e
ta
il
o
f
s
ma
lle
r
ta
s
k
s
.
3.
1.
R
Q
1
:
p
l
an
n
i
n
g o
b
j
e
c
t
i
ve
s
of
agi
l
e
m
e
t
h
od
s
T
he
pl
a
nni
ng
pha
s
e
o
f
di
f
f
e
r
e
nt
a
gi
l
e
m
e
t
hods
c
a
n
ha
ve
di
f
f
e
r
e
nt
goa
l
s
but
t
he
y
a
r
e
onl
y
s
uc
c
e
s
s
f
ul
i
f
t
he
y a
r
e
c
l
e
a
r
a
nd f
oc
us
e
d.
X
P
pl
a
nni
ng f
oc
us
e
s
on pr
oduc
t
i
n de
l
i
ve
r
y
.
L
E
A
N
pl
a
nni
ng c
l
a
r
i
f
i
e
s
c
o
nf
us
i
ons
.
S
pr
i
nt
pl
a
nni
ng pr
oduc
e
s
s
pr
i
nt
ba
c
kl
og
a
nd
r
e
s
o
u
r
ce al
l
o
cat
i
o
n
.
C
r
ys
t
a
l
pl
a
nni
ng e
m
pha
s
i
z
e
s
on goa
l
de
f
i
ni
t
i
on a
n
d i
ndi
vi
dua
l
t
a
s
ks
.
F
D
D
i
s
f
or
dr
a
f
t
i
ng
a
nd a
l
l
oc
a
t
i
ng i
ni
t
i
a
l
s
c
he
dul
e
s
a
nd r
e
s
pon
s
i
bi
l
i
t
i
e
s
.
D
S
D
M
f
oc
us
e
s
on out
l
i
ne
pl
a
nni
ng of
f
a
r
of
f
pha
s
e
s
a
nd
de
t
a
i
l
e
d pl
a
nni
ng of
t
he
ne
xt
pha
s
e
.
M
S
F
pr
oduc
e
s
P
r
oduc
t
vi
s
i
on
a
nd
accep
t
an
ces
t
es
t
s
.
A
S
D
h
el
p
s
r
eal
i
ze
t
he
unc
e
r
t
a
i
nt
i
e
s
i
n c
om
pl
e
x p
r
obl
e
m
s
.
A
U
P
a
ddr
e
s
s
e
s
r
i
s
k
f
act
i
ces
an
d
co
n
s
t
r
u
ct
s
v
al
i
d
at
es
t
h
e s
y
s
t
em
ar
ch
i
t
ect
u
r
e.
3.
2.
R
Q
2
:
w
he
n
t
o
p
l
a
n i
n a
g
i
l
e
m
e
t
ho
ds
A
pl
a
n c
a
n be
s
uc
c
e
e
de
d w
he
n i
t
i
s
i
ni
t
i
a
t
e
d a
t
t
he
r
i
ght
t
i
m
e
.
X
P
pl
a
n m
us
t
be
done
onc
e
a
n i
t
e
r
a
t
i
on.
L
E
A
N
pl
a
n m
us
t
be
done
w
he
n t
a
ki
ng
a
ny de
c
i
s
i
on
.
S
c
r
um
p
l
a
n m
us
t
be
done
a
t
t
he
s
t
a
r
t
of
a
ny
s
pr
i
nt
.
C
r
y
s
ta
l
pl
a
nni
ng r
e
qui
r
e
s
t
o be
done
be
f
or
e
goa
l
s
de
f
i
ni
ng
&
t
a
s
k a
l
l
oc
a
t
i
on.
F
D
D
pl
a
nni
ng
m
us
t
be
done
a
f
t
e
r
bui
l
di
ng
f
e
a
t
ur
e
l
i
s
t
.
D
S
D
M
pl
a
nni
ng
m
us
t
be
done
w
i
t
h t
i
m
e
l
i
ne
s
c
he
dul
i
ng.
M
S
F
r
e
qui
r
e
s
pl
a
nni
ng
t
o be
d
one
a
f
t
e
r
vi
s
i
on
&
s
co
p
e
a
ppr
ove
d.
I
n
A
U
P
,
pl
a
nni
ng
i
s
do
ne
be
f
or
e
c
ons
t
r
uc
t
i
on
pha
s
e
a
nd i
n
A
S
D
,
i
t
i
s
di
f
f
i
c
ul
t
t
o
s
p
ecu
l
at
e
w
i
t
hout
c
ol
l
a
bor
a
t
i
ng/
l
e
a
r
ni
ng
or
t
o
co
l
l
ab
o
r
at
e
/
l
ear
n
w
i
t
hout
s
p
ecu
l
at
i
n
g
.
I
n
a
ll
ag
i
l
e
M
e
t
hodol
ogi
e
s
,
pl
a
nni
ng m
us
t
be
i
ni
t
i
a
t
e
d r
i
ght
a
f
t
e
r
t
he
r
e
qui
r
e
m
e
nt
s
ha
ve
be
e
n ga
t
he
r
e
d,
an
al
y
s
ed
a
nd e
xpl
a
i
ne
d t
o t
he
de
ve
l
opm
e
nt
t
e
a
m
.
T
hi
s
i
s
ne
e
df
ul
f
or
a
l
l
oc
a
t
i
on o
f
r
e
s
our
c
e
s
a
nd s
c
he
dul
i
ng of
t
i
m
e
l
i
ne
s
.
L
E
A
N
,
he
l
ps
i
n c
l
a
r
i
f
yi
ng
a
m
bi
guous
s
i
t
ua
t
i
ons
by s
ugge
s
t
i
ng t
o pl
a
n
be
f
or
e
a
ny de
c
i
s
i
on
m
a
ki
ng.
A
l
i
ke
L
E
A
N
,
A
S
D
m
e
t
hodol
ogy
a
l
s
o doe
s
not
ha
ve
a
ny f
i
xe
d
pha
s
e
of
pl
a
nni
ng a
s
i
t
s
ugge
s
t
s
t
o e
xp
l
or
e
a
ny
hypot
he
s
i
s
f
i
r
s
t
.
3.
3.
R
Q
3
:
p
l
an
n
i
n
g o
u
t
c
om
e
s
of
agi
l
e
m
e
t
h
od
s
W
e
ge
t
di
f
f
e
r
e
nt
t
ype
s
o
f
doc
um
e
nt
s
/
bus
i
ne
s
s
m
ode
l
s
w
he
n us
i
ng d
i
f
f
e
r
e
nt
a
g
ile
m
e
t
hodol
ogi
e
s
fro
m
pl
a
nni
ng pha
s
e
.
U
s
i
ng X
P
,
w
e
ge
t
u
se
r
s
t
or
y c
a
r
ds
,
t
a
s
k c
a
r
ds
.
L
E
A
N
pr
ovi
de
s
a
L
E
A
N
p
l
an
.
S
c
r
um
pr
ovi
de
s
s
pr
i
nt
ba
c
kl
og
.
C
r
ys
t
a
l
pl
a
nni
ng gi
ve
s
us
f
r
e
que
nt
de
liv
e
r
y
p
la
n
.
We
g
et
f
eat
u
r
e s
et
s
,
cl
as
s
d
i
ag
r
am
by F
D
D
pl
a
nni
ng.
D
S
D
M
pl
a
nni
ng pr
ovi
de
s
us
out
l
i
ne
pr
o
t
ot
ypi
ng pl
a
n
.
M
S
F
pl
a
nni
ng
gi
ve
s
us
m
as
t
er
p
r
o
j
ect
p
l
an
,
r
i
s
k e
xpos
ur
e
r
a
t
i
ng
f
o
r
m
.
B
y
AUP
pl
a
nni
ng
,
w
e g
e
t
i
n
t
er
f
ace
pr
ot
ot
ype
s
,
pr
oj
e
c
t
pl
a
n
,
u
se
cas
es
,
cl
as
s
/
p
ack
ag
e
d
i
ag
r
am
s
a
nd A
S
D
pl
a
nni
ng
pr
ovi
de
s
us
w
i
t
h
ou
t
l
i
ne
pl
a
n
,
d
el
i
v
er
y
p
l
an
.
W
e
obt
a
i
n a
"
pl
a
n"
by e
ve
r
y
a
gi
l
e
m
e
t
hodol
ogy's
p
l
a
nni
ng pha
s
e
.
T
hi
s
out
put
he
l
ps
t
he
de
ve
l
opm
e
nt
t
eam
f
r
o
m
r
es
o
u
r
ce al
l
o
cat
i
n
g
t
o
m
ai
n
t
en
an
ce p
h
as
e o
f
t
h
e s
o
f
t
w
ar
e.
We
a
l
s
o ge
t
vi
s
ua
l
m
ode
l
s
w
i
t
h t
he
pl
a
n,
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
S
ys
t
em
a
t
i
c r
evi
e
w
o
n
e
v
al
uat
i
ng pl
anni
ng
pr
oc
e
s
s
i
n agi
l
e
de
v
e
l
opm
e
nt
m
e
t
hods
(
I
qbal
A
hm
e
d
)
2975
w
hi
c
h de
m
ons
t
r
a
t
e
s
t
he
c
ons
t
r
uc
t
i
on a
nd de
l
i
ve
r
y
pl
a
ns
.
T
he
s
e
i
nc
l
ude
pr
ot
ot
ype
s
,
U
M
L
di
a
gr
a
m
s
.
S
c
r
u
m
pr
ovi
de
s
us
a
pr
oduc
t
ba
c
kl
og
w
hi
c
h
l
i
s
t
s
t
he
t
a
s
ks
t
ha
t
w
oul
d
be
de
l
i
ve
r
e
d
a
t
t
he
e
nd
of
t
ha
t
s
pr
i
nt
.
T
h
e
ove
r
a
l
l
r
e
vi
e
w
of
t
he
pl
a
nni
ng p
r
oc
e
s
s
i
n a
gi
l
e
m
e
t
hods
i
s
gi
ve
n i
n
T
a
b
l
e
4.
T
a
bl
e
4.
C
ons
ol
i
da
t
i
on of
p
l
a
nni
ng i
n
a
gi
l
e
m
e
t
hod
s
A
g
ile
M
e
t
hods
P
l
a
nni
ng G
oa
l
s
T
ime
o
f
P
la
n
n
in
g
P
l
a
nni
ng O
ut
c
om
e
s
XP
G
ui
de
pr
oduc
t
i
n de
l
i
ve
r
y
O
n
ce an
i
t
er
at
i
o
n
U
s
e
r s
t
o
ry
c
a
r
ds
, t
a
s
k c
a
r
ds
L
ean
C
l
a
r
r
i
f
yi
ng c
onf
us
i
ng s
i
t
ua
t
i
ons
W
he
n t
a
ki
ng a
ny de
c
i
s
i
on
L
ean
P
l
an
S
c
ru
m
D
e
t
a
i
l
s
, s
pr
i
nt
ba
c
kl
og pr
oduc
t
i
on, r
e
s
our
c
e
a
llo
c
a
tio
n
S
t
a
rt
o
f a
p
ri
n
t
S
pr
i
nt
ba
c
kl
og
C
ry
s
t
a
l
F
oc
us
i
ng on i
ni
t
i
a
l
t
a
s
k a
nd a
l
l
oc
a
t
i
on of
goa
l
s
B
e
fo
re
goa
l
s
de
f
i
ni
ng a
nd t
a
s
k
a
llo
c
a
tio
n
F
r
e
que
nt
D
e
l
i
ve
r
y pl
a
n
FD
D
C
ons
t
r
uc
t
i
ng i
ni
t
i
a
l
s
c
he
dul
e
s
a
nd a
s
s
i
gni
ng
in
itia
l r
e
s
p
o
n
s
ib
ilitie
s
A
f
te
r
b
u
ild
in
g
f
e
a
tu
r
e
lis
t
F
eat
u
r
e s
et
s
,
C
l
as
s
D
i
ag
r
am
DS
DM
P
l
a
n i
n de
t
a
i
l
f
or
t
he
ne
xt
pha
s
e
a
nd t
o pl
a
n i
n
out
l
i
ne
f
or
t
he
pha
s
e
t
ha
t
a
r
e
f
ur
t
he
r
a
w
a
y
T
ime
lin
e
s
c
h
e
d
u
lin
g
O
ut
l
i
ne
P
r
ot
ot
ypi
ng P
l
a
n
M
SF
P
r
oduc
t
vi
s
i
on i
s
m
e
t
t
hr
ough t
he
r
eq
u
i
r
em
en
t
s
an
d
t
h
e acc
ep
t
an
ce t
e
s
t
s
ar
e
de
ve
l
ope
d
A
f
t
e
r
vi
s
i
on a
nd S
c
ope
a
ppr
ove
d
M
a
s
t
e
r
pr
oj
e
c
t
pl
a
n, R
i
s
k
E
xpos
ur
e
R
a
t
i
ng F
o
rm
AUP
A
ddr
e
s
s
know
n r
i
s
k f
a
c
t
or
s
a
nd t
o
e
s
t
a
bl
i
s
h
an
d
v
al
i
d
at
e t
h
e s
y
s
t
em
ar
ch
i
t
ect
u
r
e
B
e
f
or
e
c
ons
t
r
uc
t
i
on pha
s
e
I
nt
e
r
f
a
c
e
pr
ot
ot
ype
s
, P
r
oj
e
c
t
P
l
an
,
U
s
e ca
s
es
,
C
l
as
s
/
P
ack
ag
e
D
ia
g
r
a
ms
A
SD
A
c
know
l
e
dge
m
e
nt
s
t
he
r
e
a
l
i
t
y of
unc
e
r
t
i
ni
t
y
i
n c
om
pl
e
x pr
obl
e
m
s
I
t is
d
if
f
ic
u
lt to
S
p
e
c
u
la
te
w
ith
o
u
t
c
ol
l
a
bor
a
t
i
ng/
l
e
a
r
ni
ng a
nd vi
c
e
v
e
rs
a
O
ut
l
i
ne
pl
a
n, D
e
l
i
ve
r
y pl
a
n
A
s
pe
r
our
a
na
l
ys
i
s
of
t
he
va
r
i
ous
a
gi
l
e
m
e
t
hodol
ogi
e
s
,
S
c
r
um
s
e
e
m
s
t
o be
t
he
be
s
t
opt
i
on f
o
r
pl
a
nni
ng
:
−
T
he
pr
oduc
t
ow
ne
r
c
r
e
a
t
e
s
a
w
is
h
lis
t o
f
h
ig
h
-
pr
i
o
r
i
t
y t
a
s
ks
a
s
pe
r
bus
i
ne
s
s
va
l
ue
s
,
w
hi
c
h i
s
pr
opos
e
d a
s
a
pr
oduc
t
ba
c
kl
og.
−
S
c
r
um
t
e
a
m
s
pl
a
n a
s
pr
i
nt
pl
a
nni
ng s
e
s
s
i
on w
h
e
r
e
t
he
w
i
s
hl
i
s
t
i
s
br
oke
n dow
n i
nt
o s
m
a
l
l
e
r
m
or
e
m
an
ag
eab
l
e t
as
k
s
−
T
he
S
c
r
um
t
e
a
m
pr
oduc
e
s
a
nd pl
a
ns
t
he
i
m
pl
e
m
e
n
t
a
t
i
on of
t
he
s
pr
i
nt
ba
c
kl
og
−
T
he
t
e
a
m
de
c
i
de
s
t
he
s
pr
i
nt
's
t
i
m
e
dur
a
t
i
on
(
us
ua
l
l
y t
w
o w
e
e
ks
l
ong)
−
D
a
i
l
y s
t
a
ndup m
e
e
t
i
ngs
a
r
e
he
l
d t
o di
s
c
us
s
bot
t
l
e
ne
c
ks
,
s
t
a
t
us
of
pr
e
vi
ous
t
a
s
ks
a
nd t
a
s
ks
due
be
f
or
e
th
e
n
e
x
t me
e
tin
g
−
T
h
e S
cr
u
m
m
as
t
er
g
u
i
d
es
,
f
aci
l
ita
te
s
,
mo
tiv
a
te
s
a
n
d
b
r
in
g
s
f
o
c
u
s
to
th
e
te
a
m
−
P
r
oduc
t
ow
ne
r
r
e
vi
e
w
s
t
a
s
ks
a
t
t
he
e
nd o
f
s
pr
i
nt
4.
CO
NCL
US
I
O
N
T
he
s
e
s
t
udi
e
s
ha
s
c
om
p
a
r
e
d a
nd e
xa
m
i
ne
d va
r
i
ous
a
gi
l
e
m
e
t
hodol
ogi
e
s
i
n t
he
c
ont
e
xt
of
t
he
pl
a
nni
ng
pr
oc
e
s
s
e
s
unde
r
t
w
o obj
e
c
t
i
ve
s
.
O
ne
i
s
t
o
r
e
vi
e
w
pl
a
nni
ng pr
oc
e
s
s
e
s
a
nd r
e
qui
r
e
m
e
nt
s
i
n di
f
f
e
r
e
nt
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hods
a
nd t
he
s
e
c
ond obj
e
c
t
i
ve
i
s
t
o f
i
nd
out
t
he
be
s
t
a
gi
l
e
de
ve
l
opm
e
nt
m
e
t
hod(
s
)
w
i
t
h r
e
s
pe
c
t
t
o pl
a
nni
ng
pr
oc
e
s
s
e
s
.
I
n
our
f
i
ndi
ngs
,
S
c
r
um
i
s
t
he
be
s
t
opt
i
on a
m
ong
va
r
i
ous
a
gi
l
e
m
e
t
h
ods
w
i
t
hi
n
t
he
dom
a
i
n
of
pl
a
nni
ng
r
e
qui
r
e
m
e
nt
s
a
nd p
r
oc
e
s
s
e
s
.
R
EF
ER
EN
C
ES
[1
]
T
.
Din
gs
o
y
r
,
e
t
al
.
,
“
Em
e
r
gi
ng the
m
e
s in a
g
ile
sof
t
wa
r
e
de
ve
l
opm
e
nt
: I
ntr
od
uc
t
io
n to the
s
pe
c
ia
l se
c
ti
o
n on
c
on
ti
nu
ou
s va
l
ue
de
li
ve
r
y
,”
I
nf
o
.
So
ft
.
T
e
c
h
.
,
v
ol.
7
7,
pp.
56
-
6
0,
20
16.
[2
]
J.
R
a
sm
us
so
n,
“
Ag
il
e
in
Nu
tt S
he
ll,
”
2
01
8.
[
On
li
ne
]
.
Av
a
ila
ble
:
ww
w.
a
g
ile
nu
ts
he
l
l.
c
om
/
pla
nn
in
g
[3
]
C
.
Dr
um
o
nd,
“
L
o
ng
Te
r
m
Ag
ile
P
la
nn
in
g,
”
2
01
8.
[
On
li
n
e
]
.
Ava
ila
ble
:
w
ww.
a
tla
ss
ia
n.
c
om
/a
g
ile
/a
g
ile
-
at
-
sc
a
le
/l
o
ng
-
t
erm
-
a
g
ile
-
pla
nn
in
g
[4
]
T
a
r
a
,
e
t al.
,
“
R
U
P v
s
.
M
S
F
-
A C
om
pa
r
a
ti
ve
S
t
ud
y
,
”
The
sis,
E
a
sm
u
s
U
ni
ve
r
s
it
y
R
ot
te
r
da
m
,
Ne
t
he
r
la
nd
s,
20
08.
[5
]
Abr
a
ha
m
s
so
n,
e
t
.
al
.
,
“
Ne
w
dir
e
c
ti
on
s
on a
gi
le
m
e
t
ho
ds
:
a
c
om
pa
r
a
ti
ve
a
na
ly
si
s,
”
P
roc
e
e
di
ng
s o
f 2
5t
h I
nte
rn
at
io
na
l
C
onf.
S
of
t.
En
gg.
,
I
E
EE,
p
p.
24
4
-
2
53,
2
00
3.
[6
]
K.
He
nr
ik,
“
S
c
r
um
a
n
d XP
f
r
om
the
Tr
e
nc
h,
”
I
nf
oQ
P
ub
lis
he
r
,
20
15
.
[7
]
K
amp
k
er,
e
t al.
,
“
F
a
c
tor
y pla
nn
in
g sc
r
um
: I
nte
gr
a
t
ive
f
a
c
tor
y pla
n
ni
ng w
it
h a
gi
le
pr
o
je
c
t m
a
na
ge
m
e
n
t,
”
Proc
e
e
d.
I
nt.
C
on
f.
C
om
p.
Ma
nu
fa
c
t
ur
in
g C
OM
A
,
vo
l.
13,
n
o.
30,
201
3.
[8
]
A.
G
ul
,
e
t
al
.
,
“
Agi
l
e
M
e
t
hods:
C
o
m
pa
r
a
t
i
v
e
S
t
udy
a
nd
F
ut
ur
e
Di
r
e
c
t
i
on
,
”
Euro
.
A
c
a
.
Re
s
.,
v
o
l
. 1
,
no.
11
,
pp
.
3826
-
3841
,
2
014.
[9
]
J.
Hig
h
sm
it
h,
“
Ag
il
e
S
of
ta
wr
e
De
ve
l
opm
e
nt Ec
os
ys
te
m
s,
”
J
.
De
f.
So
ft.
E
ng
g.
,
vol.
1
5,
no.
1
0,
20
02.
[1
0
]
M
.
M
ina
r
i
k,
“
Ana
ly
si
s
of
the
c
ha
n
ge
M
a
na
ge
m
e
nt P
r
o
c
e
ss
i
n
A
gi
le
S
of
ta
wr
e
De
ve
lom
e
n
t
,
”
Ma
sa
ry
k
U
niv
e
rs
ity
,
Spr
in
g
,
20
14.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SSN
:
1693
-
6930
T
E
L
KOM
NI
KA
T
el
eco
m
m
u
n
C
om
put
E
l
C
ont
r
o
l
,
Vo
l
.
1
8
, N
o
.
6
,
D
ecem
b
er
2020
:
297
0
-
297
6
2976
[1
1
]
D.
Wa
dde
ll,
e
t a
l.
,
“R
es
i
s
t
an
ce
:
a co
n
s
t
r
u
ct
i
v
e t
o
o
l
fo
r ch
an
g
e man
ag
emen
t
,
”
J
.
Man.
De
c
.
,
vol.
3
6,
no.
8,
pp.
54
3
-
5
48,
1
9
98.
[1
2
]
F
. N
e
a
l
,
e
t al
.
,
“
T
he
R
ole
of
I
nc
r
e
m
e
n
ta
l C
ha
n
ge
i
n Ag
il
e
S
of
ta
wr
e
P
r
oc
e
s
se
s,
”
I
E
EE A
gi
le
,
pp.
9
2
-
1
03,
2
00
7.
[1
3
]
M
a
tha
r
u,
e
t al
.
,
“
Em
pir
ic
a
l
s
tu
dy
of
a
g
ile
s
of
t
wa
r
e
de
ve
l
opm
e
nt
m
e
t
ho
ds
:
A
c
om
pa
r
a
ti
ve
a
na
l
ys
is,
”
AC
M SI
GS
O
FT
Sof
t.
E
ng
g.
N
ote
.
,
vo
l.
40,
n
o.
1,
pp.
1
-
6,
20
15.
[1
4
]
M
.
F
e
r
na
nde
s Joa
o,
e
t a
l.
,
“
C
la
s
sif
ic
a
t
io
n a
n
d c
om
pa
r
iso
n of
a
gi
le
m
e
t
ho
ds,
”
7
th I
n
t.
C
o
nf.
I
n
fo.
C
o
mm.
T
e
c
h.
(Q
U
A
TIC)
,
I
EE
E,
20
10.
[1
5
]
F
.
Anwe
r
,
e
t al
.
,
“
C
om
pa
r
a
t
ive
A
na
l
ys
is
of
Tw
o P
o
pu
la
r
Ag
ile
P
r
oc
e
s
s M
ode
ls
: E
xtr
e
m
e
P
r
o
gr
a
m
m
i
ng a
nd
S
c
r
u
m
,
”
I
nt.
J
.
C
om
p.
Sc
i.
T
e
le
c
om
m.
,
vol.
8,
no
.
2,
pp.
1
-
7,
20
17
.
[1
6
]
G
.
W
a
g
e
n
a
a
r
,
e
t al
.
,
“
W
or
ki
ng s
of
t
wa
r
e
ove
r
c
om
pr
e
he
nsi
ve
d
oc
um
e
n
ta
ti
on
–
R
a
t
io
na
le
s of
a
gi
le
te
a
m
s f
or
a
r
te
f
a
c
ts
usa
ge
,
”
J
.
Sof
t.
En
gg.
Re
s.
De
v
.
,
vol.
6,
no
.
1,
20
18.
[1
7
]
M
.
Thia
g
o S
ou
to,
e
t
al
.
,
“
I
m
pa
c
t
s of
a
gi
le
r
e
qu
ir
e
m
e
nt
s doc
um
e
n
ta
t
io
n de
b
t on s
of
t
wa
r
e
pr
oje
c
ts
: a
r
e
tr
os
pe
c
t
iv
e
stu
dy,
”
Pr
oc
e
e
d.
3
1s
t An
nu.
AC
M Sy
mp.
o
n
Ap
p.
C
om
p.
,
AC
M
,
20
16.
[1
8
]
M
.
Thor
,
e
t al
.
,
“
S
c
r
um
,
doc
um
e
n
ta
t
io
n a
nd the
I
EC
6
150
8
-
3: 20
10 s
of
t
wa
r
e
sta
nda
r
d,
”
I
nt.
C
onf.
Pr
ob
ab.
Sa
fe
t
y
Ass
e
s.
M
an
ag.
(
P
SA
M)
,
PS
AM
,
20
14
.
[1
9
]
K
. F
a
r
i
a
,
e
t al
.
,
“
D
oc
um
e
nta
ti
on
pr
a
c
tic
e
s f
or
of
f
s
hor
e
a
gi
le
s
of
t
wa
r
e
de
ve
l
opm
e
nt,
”
J
.
L
i
f
e
S
c
i
.
,
v
ol.
1
0,
no
.
11,
pp.
70
-
7
3,
20
14.
[2
0
]
S
.
C
.
Joha
n
n,
e
t al.
,
“
I
s t
he
r
e
a
n a
g
ile
ha
nd
ove
r
?
a
n e
m
pi
r
ic
a
l s
tu
dy of
doc
um
e
n
ta
t
io
n a
nd
pr
o
je
c
t ha
nd
ove
r
pr
a
c
t
i
c
e
s
a
c
r
o
s
s
a
g
i
l
e
s
o
f
t
w
a
r
e
t
e
a
m
s
,
”
2
01
3
I
n
t.
C
on
f.
En
gg.
,
T
e
c
h.
I
nn
o.
(
I
C
E)
&
I
EE
E
I
nt.
T
e
c
h.
M
an
ag.
C
o
nf.
,
20
13
.
[2
1
]
S
.
C
.
Joha
n
n,
e
t al.
,
“
N
e
c
e
s
s
a
r
y
a
n
d
n
e
g
l
e
c
t
e
d
?
:
a
n e
m
pir
ic
a
l s
tu
dy of
i
nte
r
na
l d
oc
um
e
nta
ti
on i
n a
gi
le
sof
t
wa
r
e
de
ve
lo
pm
e
n
t te
a
m
s,
”
P
roc
e
e
.
2
9t
h AC
M I
nt.
C
o
nf.
D.
C
om
m
.
,
I
ta
ly,
Oc
to
be
r
2
01
1.
[2
2
]
S
.
M
e
r
z
ouk,
e
t al
.
, “
A C
om
pa
r
a
ti
ve
S
tu
dy
of
A
gi
le
M
e
tho
ds
:
To
wa
r
d
s a
Ne
w M
ode
l
-
ba
se
d M
e
th
od,
”
I
nt.
J
.
We
b
Ap
p.
,
vol.
9,
n
o.
4,
p
p.
12
1
-
1
28,
2
01
7.
[2
3
]
S
he
ll
y,
“
C
om
pa
r
a
t
ive
Ana
ly
si
s
of
Dif
f
e
r
e
nt Ag
ile
M
e
tho
ds,
”
I
nt.
J
.
C
o
mp.
Sc
i.
I
n
fo.
T
e
c
h.
Re
s.
,
v
ol.
3,
n
o.
1
,
pp.
19
9
-
20
3,
20
15.
[2
4
]
P
.
Abr
a
ha
m
ss
on,
e
t
al
.
,
“
Ag
ile
S
of
twa
r
e
De
ve
lo
pm
e
n
t M
e
th
od
s: R
e
v
ie
w a
nd A
na
l
ys
is,
”
VT
T
Pu
bl
ic
a
ti
on
4
78
,
Es
po
o,
F
inla
nd 10
7p
,
20
02
.
[2
5
]
O.
S
ie
w,
“
R
e
v
ie
w
of
A
gi
le
M
e
th
od
ol
og
ie
s
in S
of
t
wa
r
e
De
ve
l
opm
e
nt,
”
I
nt.
J
.
Re
s.
Re
v
.
Ap
p.
Sc
i
.
,
v
ol.
1,
no
.
1
,
pp.
1
-
8
,
20
09.
[2
6
]
G
.
P
a
pa
do
po
ul
ou
s,
“
M
ovi
ng f
r
om
tr
a
d
it
io
na
l to a
g
ile
sof
twa
r
e
de
ve
lo
pm
e
n
t m
e
th
od
ol
og
ie
s a
ls
o on la
r
ge
,
dis
tr
i
bu
te
d
p
r
o
j
e
c
t
s
,
”
Pr
oc
e
.
Soc
.
Be
hav
io
r.
Sc
i.
,
vo
l.
17
5,
pp.
4
55
-
4
63,
20
15.
[2
7
]
R
.
Hoda
,
e
t a
l.
,
“
The
R
i
se
a
n
d Ev
ol
ut
io
n of
A
gi
le
S
of
tw
a
r
e
De
ve
l
opm
e
nt,
”
I
E
EE So
ft.
,
vo
l.
99,
no
.
1,
20
18.
[2
8
]
A
.
L
o
z
e
z
-
A
l
c
a
r
r
i
a
,
e
t a
l.
,
“
A S
yste
m
a
t
ic
R
e
vie
w of
the
use
of
A
gi
le
M
e
th
od
ol
og
ie
s i
n Ed
uc
a
t
io
n to F
o
s
te
r
S
usta
in
a
b
il
ity C
om
pe
te
nc
ie
s,
”
J.
S
u
s.
,
vo
l
.
11,
no
.
1
0
,
pp.
1
-
29,
20
19
.
[2
9
]
K
.
Barb
ara,
e
t al.
,
“
S
yste
m
a
t
ic
li
te
r
a
tur
e
r
e
v
ie
w
s in s
of
twa
r
e
e
n
gi
ne
e
r
i
ng
–
a
sy
ste
m
a
tic
l
ite
r
a
tur
e
r
e
v
ie
w,
”
J
.
I
nfo.
Sof
t.
T
e
c
h.
,
vo
l.
51,
no
.
1,
pp.
7
-
15,
2
00
9.
[3
0
]
C.
Co
o
p
er,
e
t al
.,
“
De
f
ini
ng t
he
pr
oc
e
ss to l
ite
r
a
tur
e
se
a
r
c
hi
ng in
s
ys
te
m
a
t
ic
r
e
vie
ws
: a
lite
r
a
t
ur
e
r
e
vie
w of
gui
da
nc
e
a
nd
s
up
por
ti
ng st
ud
ie
s
,
”
B
MC
Me
d.
Re
s.
Me
t
ho
do
l.
,
vo
l.
18,
no.
1
,
pp
.
1
-
14
,
20
18.
[3
1
]
B.
A.
R
.
Our
i
que
s
,
e
t al
.
,
“
K
no
wle
dge
M
a
na
ge
m
e
nt
S
ta
r
te
gie
s a
n
d P
r
oc
e
sse
s i
n A
gi
le
S
of
twa
r
e
De
ve
lo
pm
e
nt
:
A S
ys
te
m
a
t
ic
L
ite
r
a
tur
e
R
e
v
ie
w
,
”
I
n
t.
J
.
So
ft.
E
ng
g.
K
no
.
Eng
g
.
,
vol.
2
9,
no.
0
3,
pp.
3
45
-
38
0,
20
19.
[3
2
]
V.
B
r
a
un,
e
t
al
.,
“
Us
in
g The
m
a
tic
Ana
ly
si
s in P
syc
ho
lo
g
y
,
”
Qu
a.
Re
s.
P
sy
.
,
vol.
3,
n
o.
2,
pp.
7
7
-
1
01,
2
00
6.
[3
3
]
R
.
W
.
S
te
phe
n,
e
t al
.
,
“
A The
m
a
tic
A
na
l
ys
is I
n
ve
s
ti
ga
t
i
ng t
he
I
m
pa
c
t of
P
o
si
ti
ve
B
e
ha
v
ior
a
l S
up
por
t Tr
a
i
ni
ng
on
the
L
ive
s of
S
e
r
v
ic
e
P
r
o
vi
de
r
s
: “
I
t M
a
ke
s Yo
u T
hi
nk D
i
f
f
e
r
e
nt
ly
,
”
”
F
ro
nt.
i
n
Psy
.
,
v
ol.
1
0,
pp.
1
-
8,
20
19.
[3
4
]
P
.
G
r
eg
o
r
y
,
e
t al
.
,
“
A
g
ile
C
ha
l
le
n
ge
s
in
P
r
a
c
t
ic
e
:
A
The
m
a
tic
Ana
ly
si
s
,
”
L
e
c
.
N
o
te
s
in
Bu
si.
I
nf
o.
P
roc
e
ss.
,
vol.
2
12,
20
15.
[3
5
]
P
.
G
r
e
gor
y,
e
t
al
.
,
“
B
r
id
gi
ng
the
G
a
p B
e
twe
e
n R
e
se
a
r
c
h a
nd P
r
a
c
tic
e
: T
he
A
gi
le
R
e
se
a
r
c
h Ne
tw
or
k
,
”
Eu
ro
.
C
onf
.
Re
s.
Me
th
od
.
,
L
ond
on,
U
K,
20
14
.
B
I
OGR
A
P
HI
E
S
OF
A
U
T
HOR
Iq
b
al Ah
me
d
g
o
t
h
i
s
B
ac
h
el
o
r o
f S
c
i
en
ce (B
S
c) H
o
n
o
r
s
d
e
g
ree i
n
C
o
m
p
u
t
er S
ci
e
n
ce an
d
En
gi
ne
e
r
i
ng f
r
om
U
ni
ve
r
s
it
y of
C
hi
tta
go
ng,
B
a
ng
la
de
sh
in
2
007
a
n
d a
c
h
ie
ve
d j
oi
nt M
a
ste
r
de
gr
e
e
fro
m P
E
R
C
C
O
M p
ro
g
ram o
f E
u
ro
p
ean
U
n
i
o
n
i
n
S
ep
t
em
b
er 2
0
1
5
.
H
e recei
v
ed
h
i
s
Mas
t
er o
f
C
o
mp
l
ex
S
y
s
t
em E
n
g
i
n
eer
i
n
g
d
e
g
ree fro
m
U
n
i
v
er
s
i
t
y
o
f L
o
rrai
n
e (U
L
),
F
ran
ce
t
h
e
n
Mas
t
er i
n
Te
c
h
no
lo
gy
f
r
om
L
a
p
pe
e
nr
a
nta
U
ni
ve
r
s
it
y
of
Te
c
hn
ol
og
y
(
L
UT)
,
F
inl
a
n
d
a
nd
M
a
s
te
r
de
gr
e
e
i
n
P
e
r
va
s
ive
C
om
pu
ti
ng a
n
d C
om
m
un
ic
a
t
io
n f
or
S
us
ta
i
na
b
le
de
ve
l
opm
e
nt f
r
om
L
u
le
a
Un
i
ve
r
si
ty
of
Te
c
hn
ol
og
y (
L
TU)
,
S
we
de
n.
He
r
e
c
e
i
ve
d
hi
s P
h.
D.
de
gr
e
e
f
r
om
t
he
De
pa
r
tm
e
nt
of
I
nf
or
m
a
t
io
n
S
c
ie
nc
e
,
S
a
ga
U
ni
ve
r
s
it
y,
Ja
pa
n i
n 20
18.
He
ha
s be
e
n w
or
kin
g a
s a
n As
soc
ia
te
P
r
of
e
s
sor
i
n t
he
De
pa
r
tm
e
n
t of
C
om
pu
te
r
S
c
ie
nc
e
&
En
gi
ne
e
r
i
ng i
n Un
ive
r
s
ity of
C
h
it
ta
g
on
g si
nc
e
Au
gu
st 2
01
8.
His
c
ur
r
e
nt r
e
se
a
r
c
h
in
te
r
e
s
t l
ie
s
in
the
f
ie
l
d of
gr
e
e
n a
nd
su
s
ta
i
na
b
le
c
om
pu
ti
ng,
c
l
ou
d c
om
pu
ti
ng
a
nd i
nf
or
m
a
ti
on pr
oc
e
s
si
ng.
H
e h
a
s
b
een
aw
ar
d
ed
C
at
-
A s
c
ho
la
r
s
hi
p of
Er
a
sm
us M
u
nd
us f
r
om
Eur
ope
a
n Un
io
n t
wo t
im
e
s
in 2
01
0 a
n
d
20
13 r
e
spe
c
ti
ve
l
y.
Evaluation Warning : The document was created with Spire.PDF for Python.