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.
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
6
,
Dec
em
b
er
2
0
1
7
:
3
1
0
5
–
3
1
1
3
3106
2.
L
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o
v
id
e
m
o
r
e
in
f
o
r
m
at
io
n
ab
o
u
t th
e
li
g
h
t
n
in
g
s
tr
ik
e
p
r
o
b
ab
ilit
y
o
n
a
p
ar
tic
u
lar
b
u
ild
i
n
g
[
7
]
.
3.
P
E
RF
O
RM
ANCE O
F
F
RANK
L
I
N
RO
D
Fra
n
k
lin
r
o
d
is
th
e
m
aj
o
r
d
ev
i
ce
w
h
ich
,
is
i
n
s
talled
o
n
b
u
ild
in
g
f
o
r
th
e
lig
h
t
n
in
g
p
r
o
tectio
n
p
u
r
p
o
s
e.
Fo
r
m
o
r
e
th
an
2
5
0
y
ea
r
s
f
r
an
k
li
n
r
o
d
is
u
s
e
d
as
a
p
r
o
tectio
n
d
ev
ice
[
8
]
.
Fo
r
th
e
p
r
o
tectio
n
o
f
an
y
s
tr
u
ct
u
r
e
lig
h
tn
in
g
r
o
d
g
eo
m
etr
y
is
a
n
e
s
s
e
n
tial
ele
m
e
n
t.
W
h
en
r
o
d
s
o
f
h
ei
g
h
t
o
f
6
.
4
m
ab
o
v
e
t
h
e
g
r
o
u
n
d
w
it
h
t
h
e
s
a
m
e
d
is
tan
ce
f
r
o
m
ea
c
h
o
th
er
it
h
as
b
ee
n
s
h
o
w
n
t
h
at
t
h
e
r
o
d
s
w
it
h
b
lu
n
t
tip
s
ar
e
g
o
o
d
r
ec
ep
to
r
o
f
lig
h
tn
i
n
g
s
tr
o
k
e
[
9
]
.
B
y
p
as
s
p
h
e
n
o
m
e
n
o
n
o
f
lig
h
t
n
in
g
a
ir
ter
m
i
n
al
(
L
A
T
)
is
n
o
w
a
d
ay
s
an
i
s
s
u
e
o
f
i
n
ter
est.
L
A
T
ac
ts
as
lig
h
tn
in
g
attr
ac
tio
n
d
ev
ice
wh
ich
th
e
n
p
r
o
d
u
ce
an
elec
tr
i
c
f
ield
ar
o
u
n
d
an
d
ca
n
th
er
ef
o
r
e,
th
e
L
A
T
is
b
y
p
as
s
ed
.
Du
e
to
th
is
t
h
e
lig
h
tn
in
g
ca
n
p
r
o
d
u
ce
s
id
e
f
las
h
es
w
h
ic
h
ca
n
d
a
m
a
g
e
th
e
b
u
il
d
in
g
.
T
o
s
tu
d
y
t
h
i
s
p
h
en
o
m
e
n
o
n
f
e
w
s
u
r
v
e
y
s
a
n
d
th
e
li
g
h
tn
i
n
g
f
las
h
d
a
m
a
g
es
b
ee
n
s
t
u
d
y
in
g
o
n
d
i
f
f
er
e
n
t
b
u
ild
in
g
s
w
h
e
n
t
h
e
n
b
u
ild
in
g
s
b
ee
n
i
n
s
talled
w
it
h
lig
h
tn
in
g
p
r
o
tectio
n
s
y
s
te
m
(
L
P
S)
[
1
0
]
,
[
11]
.
4.
M
E
T
H
O
DL
O
G
Y
O
F
WO
R
K
T
o
an
aly
ze
t
h
e
li
g
h
t
n
in
g
s
tr
i
k
e
p
o
in
ts
o
n
d
i
f
f
er
en
t
g
eo
m
etr
i
ca
l
s
tr
u
ctu
r
e
s
1
0
0
k
V
i
m
p
u
l
s
e
g
e
n
er
ato
r
(
HV
1
9
5
0
0
)
w
a
s
u
s
ed
in
o
r
d
er
to
p
r
o
d
u
ce
h
ig
h
v
o
ltag
e
i
m
p
u
l
s
e.
Fo
u
r
d
i
f
f
er
e
n
t
g
eo
m
etr
ical
s
tr
u
ct
u
r
es
ar
e
test
ed
.
T
h
ese
s
tr
u
ct
u
r
es
ar
e
s
q
u
ar
e,
r
ec
tan
g
u
lar
,
g
a
b
le
an
d
ci
r
cu
lar
.
T
h
e
n
u
m
b
er
s
o
f
air
ter
m
i
n
al
ar
e
d
i
f
f
er
e
n
t
d
ep
en
d
in
g
o
n
th
e
b
u
ild
in
g
s
tr
u
ct
u
r
e’
s
r
o
o
f
.
T
h
e
s
tr
u
ct
u
r
es a
r
e
s
ca
led
as it i
s
d
if
f
ic
u
lt to
tes
t
th
e
ac
t
u
al
b
u
ild
i
n
g
m
o
d
el
in
lab
o
r
ato
r
y
.
T
h
e
s
ca
l
ed
m
o
d
els
ar
e
test
ed
i
n
h
i
g
h
v
o
ltag
e
lab
.
T
h
e
i
m
p
u
ls
e
g
en
e
r
ato
r
is
w
o
r
k
in
g
o
n
h
ig
h
v
o
ltag
e
a
n
d
lo
w
c
u
r
r
en
t
th
er
ef
o
r
e
t
h
e
b
u
ild
i
n
g
s
s
tr
u
ct
u
r
es
ar
e
test
ed
o
n
h
i
g
h
v
o
lta
g
e
an
d
lo
w
c
u
r
r
en
t
ac
co
r
d
in
g
to
a
v
ailab
le
f
ac
il
itie
s
i
n
h
i
g
h
v
o
lta
g
e
lab
.
T
h
e
s
tr
u
ctu
r
es
ar
e
r
escaled
ac
co
r
d
in
g
t
o
[
1
2
]
.
T
h
e
air
g
ap
b
et
w
ee
n
t
h
e
tip
o
f
t
h
e
r
o
d
an
d
th
e
to
p
elec
tr
o
d
e
is
k
ep
t
3
c
m
co
n
s
ta
n
t
f
o
r
ev
er
y
s
tr
u
ct
u
r
e.
A
l
l
t
h
e
tes
ts
ar
e
p
er
f
o
r
m
ed
o
n
a
m
b
ie
n
t
co
n
d
iti
o
n
f
o
r
te
m
p
er
at
u
r
e
an
d
h
u
m
i
d
it
y
.
Fo
r
all
t
h
e
s
tr
u
ct
u
r
es
3
0
f
la
s
h
e
s
h
a
v
e
b
ee
n
ap
p
lied
to
s
ee
f
lash
es o
n
d
if
f
er
en
t p
o
in
ts
.
I
n
s
talla
tio
n
o
f
t
h
e
li
g
h
t
n
i
n
g
air
ter
m
i
n
al
is
ac
co
r
d
in
g
to
[
1
3
]
,
[
1
4
]
.
T
h
e
av
er
ag
e
p
ar
a
m
eter
s
o
f
t
h
e
w
ea
t
h
er
co
n
d
itio
n
s
ar
e:
a.
I
m
p
u
l
s
e
v
o
lta
g
e
=
8
1
.
8
9
kV
b.
T
em
p
er
atu
r
e
=
2
8
.
1
3
0
C
c.
P
r
ess
u
r
e
=
1
.
0
3
Pa
d.
Hu
m
id
it
y
=
7
0
.
7
%
T
h
e
ex
p
er
i
m
en
tal
p
r
o
ce
d
u
r
e
is
co
n
s
is
t
s
o
f
t
h
e
i
n
v
er
ted
r
o
d
-
p
lan
e
m
et
h
o
d
.
T
h
e
to
p
elec
tr
o
d
e
r
ep
r
esen
ts
th
e
clo
u
d
w
h
ile
t
h
e
s
ca
led
s
h
ap
e
r
ep
r
esen
ts
t
h
e
b
u
ild
in
g
o
f
an
y
h
e
ig
h
t.
5.
E
XP
E
R
I
M
E
NT
A
L
RE
SUL
T
S
E
x
p
er
i
m
e
n
tal
r
esu
l
ts
s
h
o
w
t
h
e
lig
h
t
n
i
n
g
s
tr
ik
e
p
atter
n
o
n
d
if
f
er
e
n
t
b
u
ild
i
n
g
s
h
ap
es.
T
h
e
lig
h
t
n
i
n
g
attr
ac
tio
n
is
v
ar
ies
w
i
th
c
h
an
g
in
g
i
n
g
eo
m
e
tr
ical
s
h
ap
e.
T
h
e
ex
p
er
i
m
e
n
tal
r
es
u
lts
s
h
o
w
th
e
d
is
tr
ib
u
tio
n
o
f
lig
h
tn
in
g
s
tr
i
k
e
o
n
d
if
f
er
en
t
air
ter
m
i
n
al
s
.
Du
r
i
n
g
li
g
h
ti
n
g
i
m
p
u
l
s
e
elec
tr
ic
f
ield
is
p
r
o
d
u
c
ed
.
Fo
r
all
th
e
test
ed
s
h
ap
e
th
e
elec
tr
ic
f
ield
is
al
s
o
s
i
m
u
lated
i
n
o
r
d
er
to
o
b
s
er
v
e
th
e
elec
tr
ic
f
ie
ld
s
tr
en
g
t
h
o
n
ev
er
y
air
ter
m
i
n
al.
5
.
1
.
L
ig
htning
Str
i
k
e
P
a
t
t
er
n o
f
t
he
Sq
ua
re
S
ha
pe
Sq
u
ar
e
s
h
ap
e
h
as
f
o
u
r
air
te
r
m
in
a
ls
.
T
h
e
l
ig
h
t
n
i
n
g
s
tr
i
k
e
is
d
i
s
tr
ib
u
ted
o
n
all
air
ter
m
i
n
als
w
it
h
d
if
f
er
e
n
t
n
u
m
b
er
o
f
li
g
h
tn
i
n
g
f
la
s
h
e
s
.
T
h
e
air
g
ap
is
s
a
m
e
.
A
l
l
t
h
e
a
m
b
ien
t
co
n
d
itio
n
s
ar
e
k
ep
t
t
h
e
s
a
m
e.
T
ab
le
1
s
h
o
w
s
th
e
n
u
m
b
er
o
f
s
tr
ik
e
s
d
is
tr
ib
u
tio
n
o
n
ea
c
h
a
ir
ter
m
in
a
l.
Si
m
ilar
l
y
Fi
g
u
r
e
1
s
h
o
w
s
L
i
g
h
t
n
in
g
f
las
h
o
n
d
i
f
f
er
e
n
t a
ir
ter
m
i
n
al
s
o
f
s
q
u
ar
e
s
h
ap
e.
T
ab
le
1
r
ep
r
esen
ts
t
h
e
s
tr
ik
e
d
is
tr
ib
u
tio
n
o
n
th
e
in
s
talled
air
ter
m
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n
als
o
n
th
e
s
q
u
ar
e
g
eo
m
e
tr
ical
s
h
ap
e.
T
h
e
n
u
m
b
er
o
f
lig
h
t
n
i
n
g
s
tr
i
k
es i
s
d
if
f
er
en
t
o
n
t
h
e
air
ter
m
i
n
als.
Fig
u
r
e1
s
h
o
w
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h
t
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ik
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A
ll
t
h
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air
ter
m
in
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s
h
av
e
b
ee
n
s
tr
u
c
k
b
y
t
h
e
lig
h
t
n
i
n
g
s
tr
ik
e
.
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ield I
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i
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t
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is
p
r
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ce
s
s
i
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e
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ic
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ield
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d
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d
.
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ter
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i
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ic
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ield
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ce
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ter
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h
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tr
ic
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ield
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ield
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r
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u
r
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(
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lectr
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ield
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ical
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ic
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ield
o
n
t
h
e
air
ter
m
i
n
al
W
h
er
e
a.
T
1
=
L
ig
h
tn
in
g
air
ter
m
i
n
al
1
b.
T
2
=
L
ig
h
tn
in
g
air
ter
m
i
n
al
2
c.
T
3
=
L
ig
h
tn
in
g
air
ter
m
i
n
al
3
d.
T
4
=
L
ig
h
tn
in
g
air
ter
m
i
n
al
4
Fig
u
r
e
2
(
a)
s
h
o
w
s
th
e
elec
tr
ic
f
ield
i
n
te
n
s
it
y
o
n
ea
ch
ter
m
i
n
a
l
w
h
ile
Fi
g
u
r
e
2
(
b
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r
ep
r
esen
ts
th
e
g
r
ap
h
ical
r
ep
r
esen
tatio
n
o
f
t
h
e
elec
tr
ic
f
ield
v
alu
e
ar
o
u
n
d
ea
ch
air
ter
m
i
n
al.
I
t
ca
n
b
e
s
ee
n
t
h
at
T
1
w
h
ic
h
is
o
n
t
h
e
r
ig
h
t
s
id
e
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n
r
ec
eiv
e
m
o
r
e
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tr
i
c
f
ield
.
T
h
is
s
h
o
w
s
t
h
at
th
e
v
alu
e
o
f
th
e
elec
tr
ic
is
d
i
f
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er
e
n
t
as
th
e
n
u
m
b
er
o
f
s
tr
ik
e
s
o
n
t
h
e
air
ter
m
i
n
als.
I
t
ca
n
b
e
s
ee
n
t
h
at
t
h
e
elec
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ic
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ield
is
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i
g
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er
o
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ir
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e
s
i
m
u
latio
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ic
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ield
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an
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ak
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e
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o
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.
0
k
V/c
m
T2
=
2
9
.
1
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m
T3
=
2
8
.
3
k
V/c
m
T4
=
2
7
.
4
k
V/c
m
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
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E
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Vo
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7
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6
,
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er
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:
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–
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1
3
3108
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t d
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er
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t b
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ild
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3
.
L
ig
htning
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Rec
t
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ng
ula
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uil
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g
Str
uct
ure
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h
e
r
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lar
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ca
led
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ild
i
n
g
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tr
u
ct
u
r
e
p
r
o
v
id
ed
6
air
ter
m
i
n
als
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n
t
h
e
co
r
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an
d
th
e
ed
g
es.
T
h
e
i
m
p
u
l
s
e
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o
lta
g
e
is
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p
lied
in
o
r
d
e
r
to
an
aly
s
e
th
e
p
atter
n
o
f
th
e
lig
h
t
n
i
n
g
s
tr
i
k
e
o
n
t
h
e
g
i
v
en
s
tr
u
ct
u
r
e.
T
ab
le
2
in
d
icate
s
th
e
s
tr
ik
e
d
is
tr
ib
u
tio
n
o
n
d
if
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er
e
n
t
air
ter
m
i
n
als
o
f
t
h
e
r
ec
tan
g
u
lar
s
h
ap
e.
Fig
u
r
e
3
s
h
o
w
s
t
h
e
s
tr
ik
e
d
is
tr
ib
u
t
io
n
o
n
t
h
e
d
i
f
f
er
en
t
air
ter
m
i
n
als.
T
h
e
air
t
er
m
in
a
ls
o
n
t
h
e
co
r
n
er
s
r
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v
e
m
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r
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li
g
h
t
n
i
n
g
f
las
h
es
w
h
i
le
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ed
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es
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m
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ar
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s
s
a
s
th
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h
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g
h
a
s
m
o
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te
n
d
en
ci
es
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b
e
attac
h
ed
to
th
e
co
r
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er
s
.
T
ab
le
2
.
L
ig
h
t
n
i
n
g
s
tr
i
k
e
p
atter
n
o
n
r
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g
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lar
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ild
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tr
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ctu
r
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S
t
r
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c
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e
n
o
n
a
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r
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r
mi
n
a
l
A
i
r
t
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r
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n
a
l
T1
T2
T3
T4
T5
T6
N
o
.
o
f
st
r
i
k
e
s
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6
4
2
6
5
T
ab
le
2
ex
p
r
ess
es
th
e
n
u
m
b
er
o
f
s
tr
ik
es
o
n
th
e
air
ter
m
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n
al
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in
s
talled
o
n
r
ec
tan
g
u
lar
b
u
il
d
in
g
.
T
h
e
n
u
m
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er
s
o
f
s
tr
ik
e
s
ar
e
d
is
tr
ib
u
ted
o
v
er
all
th
e
air
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m
i
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in
s
talled
o
n
th
e
m
en
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io
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ed
s
tr
u
c
t
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r
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Fig
u
r
e3
.
L
i
g
h
t
n
i
n
g
s
tr
i
k
e
d
is
tr
ib
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tio
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o
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ta
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g
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lar
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ap
e
Fig
u
r
e
3
in
d
icate
s
t
h
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s
tr
i
k
e
d
is
tr
ib
u
tio
n
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atter
n
o
n
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tan
g
u
lar
s
h
ap
e.
I
t
ca
n
b
e
s
ee
n
th
at
all
th
e
air
ter
m
i
n
als
h
a
v
e
b
ee
n
s
tr
u
c
k
b
y
t
h
e
li
g
h
tn
i
n
g
f
las
h
.
W
h
ic
h
s
h
o
w
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t
h
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tr
i
k
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n
g
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atter
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o
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t
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r
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le
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ik
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n
g
p
o
in
t o
f
t
h
e
li
g
h
t
n
i
n
g
s
tr
ik
e
s
.
5
.
4
.
E
lect
ric
F
ield I
nte
ns
it
y
o
n t
h
e
Air
T
er
m
ina
l
s
o
f
t
he
Rec
t
a
ng
ula
r
B
uil
din
g
Str
uct
ure
R
ec
tan
g
u
lar
s
h
ap
e
h
as
co
r
n
er
s
as
w
e
ll
as
ed
g
e
s
.
Fro
m
t
h
e
s
i
m
u
latio
n
is
ca
n
b
e
s
ee
n
i
n
F
ig
u
r
e
4
t
h
at
th
e
v
alu
e
o
f
elec
tr
ic
f
ield
i
s
h
i
g
h
er
at
th
e
co
r
n
er
s
w
h
ile
it
w
i
ll
b
e
less
a
t
th
e
ed
g
es.
Si
m
ilar
l
y
it
ca
n
b
e
s
h
o
w
n
th
at
th
e
air
ter
m
in
a
l
attr
ac
t
s
m
o
r
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li
g
h
t
n
i
n
g
w
i
ll
h
av
e
m
o
r
e
elec
tr
ic
f
ield
.
T
h
e
g
r
ap
h
ical
p
lo
t
ca
n
s
h
o
w
t
h
e
m
ax
i
m
u
m
elec
tr
ic
f
ield
o
n
ev
e
r
y
air
ter
m
i
n
al.
Fig
u
r
e
4
(
a)
h
a
s
a
n
in
ter
e
s
ti
n
g
r
esu
l
ts
w
h
ich
p
r
o
v
ed
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e
p
h
e
n
o
m
e
n
o
n
d
is
c
u
s
s
i
n
r
e
f
.
1
3
a
n
d
1
4
.
I
t
i
s
clea
r
f
r
o
m
t
h
e
f
ield
p
lo
t
th
at
t
h
e
elec
tr
ic
f
ield
in
te
n
s
it
y
i
s
h
i
g
h
er
o
n
th
e
co
r
n
er
s
an
d
ed
g
es
an
d
is
al
m
o
s
t
ze
r
o
at
th
e
m
id
d
le
o
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r
ec
tan
g
u
la
r
s
h
ap
e.
T
h
is
in
cr
ea
s
e
i
n
elec
t
r
ic
f
iled
in
te
n
s
it
y
o
n
t
h
e
co
r
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er
an
d
ed
g
es
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n
p
r
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ce
b
y
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as
s
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o
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L
A
T
a
n
d
th
e
e
n
tire
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ild
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n
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ca
n
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e
d
a
m
ag
ed
.
I
t
h
a
s
b
e
p
r
o
v
ed
t
h
at
in
ce
r
tain
b
u
ild
i
n
g
T1
T2
T3
T4
T5
T
6
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2
0
8
8
-
8708
E
lectric F
iled
I
n
ten
s
ity
o
f th
e
Lig
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g
S
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ikes o
n
Lig
h
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ir
Ter
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(
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Fig
u
r
e
4.
(
a)
S
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o
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t
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lo
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f
th
e
elec
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ic
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ie
ld
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ib
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n
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n
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ter
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al
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d
o
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r
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s
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e
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ig
h
a
n
d
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w
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n
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it
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t
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lectr
ic
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ield
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n
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e
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ee
n
clea
r
l
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f
r
o
m
t
h
e
f
i
g
u
r
e,
(
b
)
s
h
o
w
s
t
h
e
g
r
ap
h
ical
p
lo
t
w
ith
t
h
e
m
a
x
i
m
u
m
v
al
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e
o
f
ele
c
tr
ic
f
ield
o
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th
e
air
ter
m
i
n
al
5
.
5
.
L
ig
htning
Str
i
k
e
P
a
t
t
er
n o
f
t
he
G
a
ble B
uil
din
g
Str
uct
ure
Gab
le
s
h
ap
e
p
r
o
v
id
ed
3
lig
h
tn
i
n
g
a
ir
ter
m
i
n
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s
ac
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r
d
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s
tan
d
ar
d
m
e
n
tio
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i
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m
e
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o
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o
lo
g
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s
ec
tio
n
.
All
th
e
air
ter
m
i
n
als
ar
e
in
th
e
s
a
m
e
li
n
e.
T
h
e
a
m
b
ien
t
co
n
d
itio
n
s
f
o
r
t
h
e
g
ab
le
s
h
ap
e
ar
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t
h
e
s
a
m
e.
T
h
e
lig
h
t
n
i
n
g
s
tr
i
k
e
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atter
n
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s
o
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ed
o
n
all
th
e
th
r
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te
r
m
in
a
ls
.
T
ab
le
3
s
h
o
w
s
t
h
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n
u
m
b
er
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f
l
ig
h
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n
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tr
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k
e
o
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t
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en
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d
Fig
u
r
e
5
r
ep
r
esen
ts
t
h
e
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tr
i
k
e
d
is
tr
ib
u
tio
n
o
n
all
th
e
air
ter
m
in
a
ls
.
T
er
m
in
al
2
is
h
it t
h
e
least a
s
it
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in
t
h
e
m
id
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d
m
o
s
t o
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t
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s
tr
i
k
es a
r
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o
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th
e
co
r
n
er
s
.
T
ab
le
3
r
ep
r
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ts
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h
e
n
u
m
b
er
o
f
s
tr
ik
e
o
n
th
e
air
ter
m
i
n
als
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s
talled
o
n
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ab
le
s
h
ap
e.
T
h
r
ee
air
ter
m
i
n
als
h
a
v
e
t
h
e
s
tr
i
k
e
p
o
in
ts
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d
t
h
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n
u
m
b
er
o
f
s
tr
i
k
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o
n
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ch
ter
m
i
n
al
i
s
s
h
o
w
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in
th
e
tab
le.
Fi
g
u
r
e
4
s
h
o
w
s
t
h
e
s
tr
i
k
e
d
is
tr
ib
u
tio
n
o
n
ea
ch
air
ter
m
in
al
o
f
th
e
g
ab
l
e
s
h
ap
e.
T
ab
le
3
.
L
ig
h
t
n
i
n
g
s
tr
i
k
e
p
atter
n
o
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g
ab
le
b
u
ild
i
n
g
s
tr
u
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r
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S
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k
e
n
a
i
r
t
e
r
mi
n
a
l
A
i
r
Te
r
mi
n
a
l
T1
T2
T3
N
o
.
o
f
st
r
i
k
e
s
14
3
13
Fig
u
r
e
5
.
L
ig
h
t
n
i
n
g
s
tr
ik
e
d
i
s
t
r
ib
u
tio
n
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e
Fro
m
Fig
u
r
e
5
,
it
is
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r
th
at
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g
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t
n
i
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la
s
h
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as
b
ee
n
o
b
s
er
v
ed
o
n
all
th
e
th
r
ee
air
ter
m
i
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al.
A
l
l
th
e
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ter
m
i
n
als
h
a
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ee
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i
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e
p
lace
o
n
al
l
t
h
e
air
ter
m
in
al
s
.
T
1
=
3
0
.
0
k
V/c
m
T2
=
2
9
.
1
k
V/c
m
T3
=
2
4
.
2
k
V/c
m
T4
=
1
8
.
5
k
V/c
m
T5
=
2
6
.
2
k
V/c
m
T6
=
2
4
.
0
k
V/c
m
T3
T1
T2
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
7
,
No
.
6
,
Dec
em
b
er
2
0
1
7
:
3
1
0
5
–
3
1
1
3
3110
5
.
6
.
E
lect
ric
F
ield I
nte
ns
it
y
o
n t
h
e
Air
T
er
m
ina
l
s
o
f
t
he
G
a
ble
B
uil
din
g
Str
uct
ure
Gab
le
is
a
litt
le
d
if
f
er
e
n
t
s
h
a
p
e
th
a
n
o
th
er
g
eo
m
etr
ical
s
tr
u
ctu
r
e
s
a
n
d
t
h
er
ef
o
r
it
ca
n
b
e
s
ee
n
t
h
e
co
r
n
er
an
d
ed
g
es
also
in
d
if
f
e
r
en
t
ar
r
an
g
e
m
en
t
f
r
o
m
o
th
er
s
h
ap
es.
Ho
w
e
v
er
in
th
i
s
s
h
ap
e
th
e
n
u
m
b
er
s
o
f
air
ter
m
i
n
al
ar
e
n
ee
d
ed
less
an
d
it
ca
n
p
r
o
v
id
e
p
r
o
tectio
n
to
all
t
h
e
b
u
ild
i
n
g
a
s
s
h
o
w
n
i
n
Fi
g
u
r
e
6
.
(
a)
(
b
)
Fig
u
r
e
6
.
(
a)
Sh
o
w
s
t
h
e
p
lo
t o
f
elec
tr
ic
f
ield
o
n
th
e
w
h
o
le
s
u
r
f
ac
e
o
f
t
h
e
b
u
ild
i
n
g
s
tr
u
ct
u
r
e
,
w
h
ile
(
b
)
r
e
p
r
esen
ts
t
h
e
m
a
x
i
m
u
m
el
ec
tr
ic
f
ie
ld
v
al
u
e
o
n
e
v
er
y
air
t
er
m
in
a
l,
w
h
e
n
li
g
h
t
n
i
n
g
s
tr
i
k
e
an
air
ter
m
i
n
al
th
e
m
a
x
i
m
u
m
e
lec
tr
ic
f
ie
ld
is
o
n
th
e
tip
o
f
r
o
d
5
.
7
.
L
ig
htning
Str
i
k
e
P
a
t
t
er
n o
f
t
he
C
irc
ula
r
B
uil
di
ng
S
t
ruct
ure
C
ir
cu
lar
s
h
ap
e
h
as
4
air
ter
m
in
als
i
n
s
ta
lled
o
n
it.
I
n
ter
esti
n
g
l
y
cir
cu
lar
s
h
ap
e
h
as
n
o
co
r
n
er
s
.
T
h
e
lig
h
tn
in
g
w
il
l
b
e
attac
h
ed
b
y
t
h
e
air
ter
m
i
n
al
s
in
s
talled
o
n
t
h
e
ed
g
es.
T
h
e
li
g
h
t
n
i
n
g
f
la
s
h
e
s
attac
h
m
e
n
t
ta
k
es
p
lace
b
y
all
th
e
air
ter
m
i
n
als
w
h
ic
h
s
h
o
w
t
h
at
t
h
e
b
u
ild
i
n
g
s
tr
u
ct
u
r
e
d
esi
g
n
ed
is
q
u
ite
ac
cu
r
ate.
Si
m
ilar
to
o
th
er
b
u
ild
in
g
s
h
ap
es
t
h
e
a
m
b
ien
t
co
n
d
itio
n
s
ar
e
s
a
m
e
t
h
r
o
u
g
h
o
u
t
t
h
e
ex
p
er
i
m
en
ta
l
p
r
o
ce
d
u
r
e
d
u
r
in
g
test
in
g
th
e
o
b
j
ec
t.
T
ab
le
4
ex
p
lain
s
t
h
e
n
u
m
b
er
o
f
s
tr
i
k
es
o
n
ea
c
h
air
ter
m
i
n
al
o
f
t
h
e
g
i
v
e
n
s
h
ap
e.
T
h
e
s
tr
ik
e
p
atter
n
is
g
i
v
e
n
in
F
ig
u
r
e
7
w
h
ic
h
s
h
o
w
s
th
e
s
tr
ik
e
d
is
tr
ib
u
tio
n
o
n
al
l th
e
air
ter
m
i
n
als.
T
ab
le
4
.
L
ig
h
t
n
i
n
g
s
tr
i
k
e
p
atter
n
o
n
cir
cu
lar
s
h
ap
e
S
t
r
i
c
k
e
n
a
i
r
t
e
r
mi
n
a
l
A
i
r
t
e
r
mi
n
a
l
T1
T2
T3
T4
N
o
.
o
f
st
r
i
k
e
s
9
8
7
6
T
ab
le
4
s
h
o
w
s
th
e
n
u
m
b
er
o
f
s
tr
ik
e
s
o
n
t
h
e
cir
cu
lar
s
h
ap
e.
T
h
e
s
h
ap
e
co
n
s
is
ts
o
f
4
air
ter
m
i
n
al
an
d
all
th
e
air
ter
m
i
n
al
s
r
ec
eiv
e
t
h
e
lig
h
tn
i
n
g
f
las
h
es.
Fig
u
r
e
7
.
Strik
e
d
is
tr
ib
u
t
io
n
o
n
cir
cu
lar
s
h
ap
e
T1
=
3
6
.
8
k
V/c
m
T2
=
3
0
.
0
k
V/c
m
T3
=
3
5
.
0
k
V/c
m
T2
T3
T4
T1
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2
0
8
8
-
8708
E
lectric F
iled
I
n
ten
s
ity
o
f th
e
Lig
h
tn
in
g
S
tr
ikes o
n
Lig
h
tn
i
n
g
A
ir
Ter
min
a
ls
I
n
s
ta
lled
o
n
….
(
I
r
s
h
a
d
Ulla
h
)
3111
Fro
m
Fig
u
r
e
7
it
is
o
b
v
io
u
s
t
h
at
lig
h
t
n
i
n
g
f
las
h
e
s
ar
e
attr
ac
ted
b
y
all
th
e
air
ter
m
i
n
al
s
.
So
m
e
o
f
th
e
air
ter
m
in
al
s
r
ec
eiv
e
m
o
r
e
f
las
h
es
w
h
ile
s
o
m
e
r
ec
eiv
e
le
s
s
i
n
n
u
m
b
er
.
5
.
8
.
E
lect
ric
F
ield I
nte
ns
it
y
o
n t
h
e
Air
T
er
m
ina
l
s
o
f
t
he
Circ
ula
r
B
uil
din
g
Str
uct
ure
C
ir
cu
lar
s
h
ap
e
ca
n
b
e
f
o
u
n
d
ev
er
y
w
h
er
e.
I
ts
p
r
o
tectio
n
f
r
o
m
l
ig
h
t
n
i
n
g
is
v
er
y
i
m
p
o
r
tan
t.
W
h
e
n
lig
h
tn
in
g
s
tr
i
k
es
th
e
air
ter
m
i
n
al
i
n
s
talled
o
n
t
h
e
cir
c
u
lar
s
h
ap
e
it
p
r
o
d
u
ce
th
e
elec
tr
ic
f
i
eld
w
h
ich
ca
n
a
f
f
ec
t
th
e
s
u
r
r
o
u
n
d
o
f
t
h
e
b
u
ild
i
n
g
.
T
h
e
ele
ctr
ic
f
ie
ld
ef
f
ec
t is s
h
o
wn
in
Fig
u
r
e
8
.
(
a)
(
b
)
Fig
u
r
e
8
.
(
a)
E
lectr
ic
f
ield
p
lo
t
o
n
th
e
cir
cu
lar
s
h
ap
e
,
(
b
)
m
a
x
i
m
u
m
elec
tr
ic
f
ield
o
n
air
ter
m
in
als
Fig
u
r
e
8
(
a)
ex
p
lain
s
th
e
elec
t
r
ic
f
ield
p
lo
t
ar
o
u
n
d
all
th
e
air
ter
m
i
n
al
s
an
d
o
n
th
e
s
u
r
f
ac
e
o
f
th
e
b
u
ild
in
g
s
h
ap
e.
T
h
e
v
alu
e
o
f
elec
tr
ic
f
iled
is
g
iv
e
n
f
o
r
ev
er
y
air
ter
m
in
al
(
b
)
in
d
i
ca
tes
th
e
g
r
ap
h
ical
r
ep
r
esen
tatio
n
o
f
t
h
e
elec
tr
ic
f
ield
v
al
u
es.
I
t
ca
n
s
h
o
w
t
h
e
m
ax
i
m
u
m
a
n
d
m
in
i
m
u
m
v
al
u
e
o
f
th
e
elec
tr
ic
f
ield
ar
o
u
n
d
t
h
e
air
ter
m
in
a
l i
n
s
tal
l
ed
.
I
n
cir
cu
lar
s
h
ap
e
m
a
x
i
m
u
m
elec
tr
ic
f
ie
ld
is
o
n
t
h
e
f
r
o
n
t
air
ter
m
i
n
al
w
h
ic
h
i
s
ter
m
i
n
al
1
.
6.
DIS
CU
SS
I
O
N
L
i
g
h
tn
i
n
g
s
tr
ik
e
p
atter
n
o
n
d
i
f
f
er
en
t
s
ca
led
b
u
i
ld
in
g
s
tr
u
ct
u
r
e
is
elab
o
r
ated
.
A
lig
h
t
n
i
n
g
s
t
r
ik
e
p
o
in
t
o
n
d
if
f
er
en
t
r
o
o
f
s
tr
u
ct
u
r
es
is
an
es
s
en
tial
ele
m
e
n
t
f
o
r
t
h
e
p
r
o
tectio
n
o
f
b
u
ild
in
g
s
.
Stri
k
e
p
o
in
ts
ca
n
h
elp
f
o
r
th
e
p
r
o
b
ab
ilit
y
o
f
li
g
h
tn
in
g
s
tr
ik
e
o
n
ea
ch
s
tr
u
ct
u
r
e.
T
h
e
s
ca
led
s
tr
u
ct
u
r
es
ar
e
test
ed
o
n
t
h
e
Ma
la
y
s
ia
a
m
b
ien
t
co
n
d
itio
n
.
T
h
e
e
x
p
er
i
m
e
n
tal
p
r
o
ce
s
s
also
e
n
s
u
r
es
th
e
m
ax
i
m
u
m
li
g
h
tn
i
n
g
s
tr
ik
e
s
o
n
t
h
e
p
ar
ticu
lar
air
ter
m
i
n
a
l
o
f
d
if
f
er
en
t
s
h
ap
e
s
.
T
h
e
air
ter
m
i
n
al
ar
r
an
g
e
m
e
n
t
i
s
ac
co
r
d
in
g
to
th
e
s
ta
n
d
ar
d
.
Du
r
in
g
li
g
h
t
in
g
s
tr
i
k
e
t
h
e
m
o
s
t
i
m
p
o
r
tan
t
ele
m
en
t
i
s
th
e
g
e
n
er
atio
n
o
f
elec
tr
ic
f
ield
.
E
lectr
ic
f
ield
ca
n
af
f
ec
t
th
e
en
t
ir
e
b
u
il
d
in
g
as
w
ell
as
t
h
e
s
u
r
r
o
u
n
d
in
g
en
v
ir
o
n
m
e
n
t.
T
h
er
ef
o
r
e,
it
is
v
er
y
i
m
p
o
r
tan
t
t
o
o
b
s
er
v
e
its
ef
f
ec
t
o
n
t
h
e
s
u
r
f
ac
e
o
f
th
e
b
u
i
ld
in
g
an
d
o
n
t
h
e
i
n
s
talled
air
ter
m
i
n
al.
T
h
is
p
ap
er
also
p
r
o
v
id
es t
h
e
elec
tr
ic
f
ield
s
i
m
u
latio
n
.
I
t s
h
o
w
s
t
h
e
m
a
x
i
m
u
m
an
d
m
i
n
i
m
u
m
v
al
u
e
o
f
th
e
ele
ctr
ic
f
ield
.
T
h
e
v
alu
e
o
f
th
e
elec
tr
ic
f
ield
en
s
u
r
es
th
e
m
o
s
t
p
r
o
b
ab
le
p
o
in
t
w
h
ic
h
c
o
u
ld
b
e
s
tr
u
ck
o
f
th
e
l
ig
h
t
n
in
g
s
tr
i
k
e.
Kee
p
in
g
in
co
n
s
id
er
atio
n
th
e
elec
tr
ic
f
ield
e
f
f
e
ct
th
e
i
n
s
tal
led
air
ter
m
i
n
al
ca
n
b
p
lace
d
o
n
t
h
e
p
r
o
p
er
p
o
s
itio
n
as
w
ell
as
t
h
e
b
u
ild
i
n
g
co
u
ld
b
e
g
i
v
e
n
m
o
r
e
atten
tio
n
o
n
th
e
ef
f
ec
ted
p
o
in
t to
b
e
p
r
o
tect
m
o
r
e
ac
cu
r
at
el
y
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M
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2
0
0
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.
[2
]
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.
A
b
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e
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,
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A
n
Ov
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rv
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L
ig
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tn
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A
ir
T
e
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l :
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a
n
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S
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p
p
.
2
7
–
2
8
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2
0
0
6
.
[3
]
C.
G
o
m
e
s
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n
d
M
.
Z.
a
.
A
.
Ka
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rd
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m
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s.
Res
.
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1
0
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3
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p
.
7
1
9
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2
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1
.
[4
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H.
T
a
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g
,
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Early
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0
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2
0
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.
[5
]
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Be
c
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3
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strik
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s p
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2
0
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p
p
.
3
6
8
–
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7
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.
[6
]
A
.
K
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C.
S
c
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f
f
,
a
n
d
M
.
M
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ieu
,
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strik
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s
to
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tu
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sin
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th
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tro
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mo
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Res
.
,
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1
1
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2
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2
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.
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]
A
.
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ish
ra
,
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0
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–
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[8
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R.
Ha
rto
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o
Zain
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l
A
b
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m
,
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ir
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m
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w
,
”
2
0
0
4
,
p
p
.
1
–
3
9
.
[9
]
F
.
D’A
les
sa
n
d
ro
,
“
On
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m
ro
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tn
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p
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tec
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sy
ste
m
s,”
J
.
El
e
c
tro
sta
t.
,
v
o
l.
6
5
,
n
o
.
2
,
p
p
.
1
1
3
–
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2
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b
.
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0
0
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.
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0
]
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.
Ha
rto
n
o
a
n
d
R.
Ib
ra
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im
,
“
A
d
a
t
a
b
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se
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tn
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n
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d
a
m
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min
a
ls
o
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in
Ku
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M
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si
a
,
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n
V
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tern
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g
P
ro
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n
,
2
0
0
1
,
n
o
.
F
e
b
ru
a
ry
.
[1
1
]
Z.
A
.
H
a
rto
n
o
a
n
d
I.
Ro
b
ia
h
,
“
A
s
tu
d
y
o
f
n
o
n
-
c
o
n
v
e
n
ti
o
n
a
l
a
ir
ter
min
a
ls
a
n
d
stric
k
e
n
p
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in
ts
in
a
h
ig
h
th
u
n
d
e
rs
to
r
m
re
g
io
n
,
”
L
ig
h
t.
P
r
o
t.
(ICL
P
),
2
0
0
0
In
t
.
Co
n
f
.
[1
2
]
J.
L
.
Be
r
m
u
d
e
z
,
F
.
Ra
c
h
i
d
i,
A
.
C
h
ish
o
lm
,
M
.
Ru
b
in
ste
i
n
,
M
.
Hu
ss
e
in
,
a
n
d
S
.
Ch
a
n
g
,
“
On
th
e
Us
e
o
f
T
r
a
n
s
m
issio
n
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in
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T
h
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Re
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V
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g
h
tn
in
g
,
”
p
p
.
5
0
1
–
5
0
4
,
2
0
0
3
.
[1
3
]
A
.
R.
Re
se
rv
e
d
,
NFP
A
7
8
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t
a
n
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a
rd
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e
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ll
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ti
o
n
L
ig
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tn
in
g
P
ro
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ti
o
n
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y
ste
m
.
2
0
0
6
,
p
p
.
1
–
1
6
5
.
[1
4
]
G
.
P
rin
c
ip
les
a
n
d
R.
M
a
n
a
g
e
m
e
n
t,
BS
EN
/
IEC
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2
3
0
5
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ig
h
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n
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g
p
ro
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ti
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n
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r
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y
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ts
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id
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to
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l.
4
4
,
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0
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p
p
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–
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.
B
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RAP
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Evaluation Warning : The document was created with Spire.PDF for Python.