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[
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[
1
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.
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ec
ts
an
d
o
b
s
tacle
s
at
d
is
tan
ce
s
o
f
u
p
to
1
2
m
[
1
2
]
.
On
th
e
o
th
er
h
an
d
,
th
er
e
ar
e
s
o
l
u
tio
n
s
th
a
t
u
s
e
v
ar
io
u
s
s
e
n
s
o
r
s
,
s
u
c
h
as
u
ltra
s
o
n
ic
a
n
d
in
f
r
ar
ed
,
to
aler
t
v
is
u
all
y
i
m
p
air
ed
p
eo
p
le
ab
o
u
t
o
b
s
tacle
s
in
th
e
ir
en
v
ir
o
n
m
e
n
t
an
d
p
r
o
v
id
e
s
en
s
iti
v
e
r
esp
o
n
s
es
[
1
3
]
–
[
1
5
]
b
y
g
en
er
ati
n
g
v
ib
r
atio
n
p
atter
n
s
i
n
a
m
icr
o
co
n
tr
o
ller
.
On
t
h
e
o
t
h
er
h
a
n
d
,
t
h
er
e
ar
e
s
o
lu
tio
n
s
b
ased
o
n
th
e
u
s
e
o
f
c
an
es
u
s
in
g
a
s
m
ar
t
g
eo
lo
ca
to
r
[
1
6
]
,
[
1
7
]
w
it
h
r
ea
l
-
t
i
m
e
lo
ca
tio
n
,
w
h
i
le
o
th
er
s
u
s
e
u
l
tr
aso
n
ic
s
e
n
s
o
r
s
,
a
m
icr
o
co
n
tr
o
ller
an
d
GP
S
to
d
etec
t
o
b
s
t
ac
les
in
f
a
m
iliar
ar
ea
s
an
d
u
r
b
an
s
tr
ee
ts
[
1
8
]
,
[
1
9
]
.
T
h
e
th
ir
d
ap
p
r
o
ac
h
[
2
0
]
is
b
ased
o
n
th
e
ex
p
er
im
en
tal
d
esig
n
o
f
an
elec
tr
o
n
ic
ca
n
e,
w
it
h
th
e
p
ar
ti
cip
atio
n
o
f
p
eo
p
le
w
ith
v
is
u
al
d
is
ab
ilit
ies
in
it
s
d
ev
elo
p
m
e
n
t,
f
o
cu
s
i
n
g
o
n
th
eir
s
p
ec
if
ic
n
ee
d
s
an
d
e
x
p
er
ien
c
es
[
2
1
]
,
[
2
2
]
.
T
h
ese
s
tu
d
ie
s
s
h
o
w
a
v
ar
iet
y
o
f
ap
p
r
o
ac
h
es
an
d
s
o
lu
t
io
n
s
to
i
m
p
r
o
v
e
t
h
e
m
o
b
ilit
y
a
n
d
s
a
f
e
t
y
o
f
p
eo
p
le
w
it
h
v
is
u
al
i
m
p
a
ir
m
en
ts
,
w
h
ic
h
co
u
ld
also
i
n
t
eg
r
ate
tec
h
n
o
lo
g
ies
to
d
etec
t m
o
v
e
m
e
n
t p
atter
n
s
o
r
ac
tiv
ities
i
n
e
m
b
ed
d
ed
s
y
s
te
m
s
[
2
3
]
.
B
ased
o
n
th
is
p
r
o
b
le
m
a
n
d
c
o
n
s
id
er
in
g
t
h
e
ac
ce
s
s
ib
ilit
y
o
f
th
is
tech
n
o
lo
g
y
,
th
is
p
ap
er
p
r
o
p
o
s
es
to
d
esig
n
a
lo
w
-
co
s
t
e
lectr
o
n
ic
d
ev
ice
t
h
at
ca
n
b
e
i
n
co
r
p
o
r
ated
in
to
t
h
e
ca
n
e
u
s
ed
b
y
p
eo
p
le
w
it
h
v
is
u
al
d
is
ab
il
ities
.
T
h
is
d
ev
ice,
eq
u
ip
p
ed
w
it
h
s
en
s
o
r
s
an
d
an
au
d
ib
le
alar
m
,
w
ill
allo
w
th
e
d
et
ec
tio
n
o
f
o
b
s
tacle
s
w
it
h
i
n
th
e
r
an
g
e
o
f
m
o
v
e
m
en
t,
th
u
s
i
m
p
r
o
v
i
n
g
th
e
q
u
a
lit
y
o
f
lif
e
an
d
m
o
b
ilit
y
o
f
p
eo
p
le
w
it
h
v
is
u
al
d
is
ab
ilit
ies.
I
n
ad
d
itio
n
,
it
is
i
m
p
o
r
tan
t
to
co
n
s
id
er
s
ca
lab
ilit
y
at
an
en
er
g
y
le
v
el
to
u
s
e
th
e
d
ev
ice
co
n
tin
u
o
u
s
l
y
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
p
r
o
p
o
s
ed
m
et
h
o
d
is
b
ase
d
o
n
th
e
u
s
e
o
f
t
h
e
H
C
-
SR
0
4
s
en
s
o
r
,
w
h
ich
e
m
i
ts
u
ltra
s
o
n
i
c
p
u
ls
es
to
id
en
ti
f
y
o
b
s
tac
les.
T
h
is
s
e
n
s
o
r
,
in
co
m
b
i
n
atio
n
w
it
h
t
h
e
A
r
d
u
in
o
U
n
o
b
o
ar
d
,
is
r
ig
o
r
o
u
s
l
y
co
n
f
ig
u
r
ed
an
d
ev
alu
a
ted
to
ac
h
ie
v
e
ac
c
u
r
ate
o
b
s
tacle
d
etec
tio
n
w
it
h
i
n
a
p
r
eset
r
an
g
e.
T
h
is
s
ec
tio
n
d
escr
i
b
es
th
e
k
e
y
f
ea
tu
r
es
an
d
p
ar
a
m
eter
s
o
f
t
h
e
d
es
ig
n
,
s
tr
u
ct
u
r
i
n
g
t
h
e
s
o
l
u
tio
n
i
n
to
s
ix
co
m
p
o
n
e
n
ts
:
s
e
n
s
o
r
s
tag
e,
p
r
o
ce
s
s
in
g
d
ev
ice,
co
n
tr
o
l
alg
o
r
ith
m
,
m
ec
h
a
n
ical
s
tr
u
ct
u
r
e
,
an
d
in
te
g
r
atio
n
(
F
ig
u
r
e
1
)
.
Fig
u
r
e
1
.
C
o
m
p
o
n
e
n
ts
o
f
t
h
e
p
r
o
p
o
s
ed
s
o
lu
tio
n
2
.
1
.
Desig
n sp
ec
if
ica
t
io
ns
Fo
r
th
e
c
h
o
ice
o
f
co
m
p
o
n
e
n
ts
,
t
h
e
c
h
ar
ac
ter
is
tics
an
d
co
s
ts
a
v
ailab
le
in
th
e
lo
ca
l
m
a
r
k
et
w
er
e
ev
alu
a
ted
to
b
u
ild
a
lo
w
-
co
s
t
d
ev
ice.
T
h
e
s
elec
ted
c
o
m
p
o
n
en
ts
i
n
clu
d
e
th
e
A
r
d
u
i
n
o
Un
o
as
th
e
m
ain
in
telli
g
e
n
t
co
m
p
o
n
e
n
t
[
2
4
]
,
[
2
5
]
,
th
e
HC
-
S
R
0
4
u
ltra
s
o
n
ic
s
e
n
s
o
r
,
a
9
V
lith
iu
m
-
io
n
b
atter
y
,
a
p
ass
iv
e
b
u
zz
er
an
d
a
co
in
-
t
y
p
e
v
ib
r
ato
r
m
o
t
o
r
(
Fig
u
r
e
2
)
.
T
h
ese
co
m
p
o
n
en
ts
w
er
e
in
te
g
r
ated
in
to
th
e
o
b
s
tacle
d
etec
tio
n
s
y
s
te
m
co
n
s
id
er
in
g
t
h
e
en
er
g
y
co
n
s
tr
ain
t
s
.
2
.
2
.
P
a
ra
m
et
er
s
pecif
ica
t
io
n
I
n
t
h
is
s
ec
tio
n
,
th
e
o
p
er
atin
g
p
ar
a
m
eter
s
a
n
d
r
an
g
e
o
f
b
o
th
t
h
e
u
ltra
s
o
n
ic
s
e
n
s
o
r
a
n
d
t
h
e
p
ass
iv
e
b
u
zz
er
ar
e
d
ef
i
n
ed
.
Si
n
ce
t
h
e
p
u
r
p
o
s
e
o
f
t
h
e
H
C
-
SR
0
4
s
e
n
s
o
r
is
to
d
etec
t
o
b
s
tacle
s
i
n
it
s
en
v
ir
o
n
m
en
t,
it
i
s
ess
e
n
tial
to
d
ef
in
e
th
e
o
p
er
atin
g
r
an
g
e
[
2
6
]
,
[
2
7
]
.
I
n
s
tead
o
f
m
a
in
tai
n
i
n
g
th
e
f
u
ll
r
an
g
e
o
f
2
to
4
0
0
cm
,
it
w
a
s
d
ec
id
ed
to
r
ed
u
ce
it
to
av
o
id
e
x
ce
s
s
iv
e
d
etec
tio
n
at
lo
n
g
d
is
t
an
ce
s
,
w
h
ich
co
u
ld
b
e
u
n
s
u
it
a
b
le
f
o
r
th
e
n
ee
d
s
o
f
th
e
s
o
l
u
tio
n
,
d
eli
m
iti
n
g
t
w
o
s
p
ec
if
ic
r
an
g
es
(
[
2
;2
0
]
cm
a
n
d
<2
0
;5
0
]
cm
)
.
W
ith
i
n
th
e
s
e
r
an
g
es,
t
h
e
b
u
zz
er
w
il
l
ac
ti
v
ate
(
b
u
t
w
it
h
d
if
f
er
e
n
t
s
o
u
n
d
f
r
eq
u
e
n
cies)
a
n
d
th
e
v
ib
r
atin
g
m
o
to
r
w
ill
o
n
l
y
ac
tiv
ate
i
n
t
h
e
r
a
n
g
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
9
-
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I
n
t J
R
ec
o
n
f
i
g
u
r
ab
le
&
E
m
b
ed
d
ed
Sy
s
t
,
Vo
l.
13
,
No
.
3
,
No
v
e
m
b
er
20
24
:
520
-
52
7
522
[
2
;2
0
]
cm
to
p
r
o
v
id
e
a
m
o
r
e
i
n
ten
s
e
an
d
o
b
v
io
u
s
aler
t
w
h
e
n
an
o
b
s
tacle
is
n
ea
r
b
y
.
I
n
r
elatio
n
to
th
e
p
ass
i
v
e
b
u
zz
er
,
t
w
o
d
is
ta
n
ce
r
an
g
es h
a
v
e
b
ee
n
estab
li
s
h
ed
t
h
at
r
eq
u
ir
e
d
if
f
er
e
n
t o
p
er
atin
g
f
r
eq
u
e
n
ci
es in
2
r
an
g
es:
−
Fo
r
th
e
f
ir
s
t
r
an
g
e,
[
2
;2
0
]
cm
,
a
f
r
eq
u
en
c
y
o
f
2
2
0
Hz
(
co
r
r
esp
o
n
d
in
g
to
t
h
e
m
u
s
ical
n
o
te
L
A
)
w
as
s
elec
ted
to
g
en
er
ate
a
lo
w
er
to
n
e.
I
n
p
r
o
g
r
am
m
i
n
g
,
w
e
w
ill
u
s
e
th
e
"
to
n
e"
co
m
m
a
n
d
,
s
p
ec
if
y
in
g
t
h
e
p
in
to
w
h
ich
t
h
e
b
u
zz
er
is
co
n
n
ec
t
ed
(
p
in
1
2
)
,
f
o
llo
w
ed
b
y
th
e
f
r
eq
u
en
c
y
in
Hz
a
n
d
a
d
ela
y
.
−
As
f
o
r
th
e
s
ec
o
n
d
r
an
g
e,
<2
0
;5
0
]
cm
,
w
e
w
ill
u
s
e
a
f
r
eq
u
en
c
y
o
f
4
1
5
Hz
(
w
h
ic
h
co
in
c
id
es
w
i
th
t
h
e
m
u
s
ical
n
o
te
SO
L
#
)
to
o
b
tain
a
h
ig
h
er
p
itc
h
.
I
n
a
s
i
m
ilar
w
a
y
to
t
h
e
p
r
ev
io
u
s
ca
s
e,
we
w
i
ll
u
s
e
t
h
e
"
to
n
e"
f
u
n
c
tio
n
to
o
b
tain
t
h
is
f
r
eq
u
en
c
y
.
T
ab
le
1
s
h
o
w
s
t
h
e
to
n
es
g
e
n
er
ated
f
o
r
ea
ch
r
an
g
e,
o
n
p
in
1
2
,
w
it
h
a
d
u
r
atio
n
o
f
1
0
0
m
i
llis
e
co
n
d
s
.
Fig
u
r
e
2
.
Dev
ice
co
m
p
o
n
e
n
ts
T
ab
le
1
.
I
n
s
tr
u
ctio
n
s
f
o
r
to
n
e
g
en
er
atio
n
#
L
í
n
e
I
n
st
r
u
c
t
i
o
n
1
T
o
n
e
(
1
2
,
2
2
0
,
1
0
0
)
2
T
o
n
e
(
1
2
,
4
1
5
,
1
0
0
)
Su
b
s
eq
u
e
n
tl
y
,
t
h
e
o
p
er
atio
n
o
f
th
e
HC
-
SR
0
4
s
en
s
o
r
is
v
alid
ated
,
f
o
r
w
h
ic
h
an
al
g
o
r
ith
m
is
i
m
p
le
m
en
ted
to
p
er
f
o
r
m
th
e
c
alib
r
atio
n
.
Fig
u
r
e
3
s
h
o
w
s
th
e
in
itial
e
v
alu
at
io
n
p
r
o
g
r
a
m
w
h
er
e
th
e
s
en
d
in
g
an
d
r
ec
eiv
in
g
o
f
t
h
e
g
e
n
er
ated
p
u
ls
es
i
s
co
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ate
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u
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.
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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1
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CO
NCLU
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p
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f
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ased
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d
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ce
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th
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f
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m
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o
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in
f
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m
at
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f
o
r
p
eo
p
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it
h
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is
ab
ilit
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o
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m
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d
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s
f
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to
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n
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m
p
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ca
n
b
e
u
p
d
ated
b
ased
o
n
tech
n
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lo
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ical
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v
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ce
s
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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I
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526
RE
F
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[
1
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S
.
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e
sn
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k
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a
l
.
,
“
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.
[
2
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B
.
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.
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h
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[
3
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M
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C
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0
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5
6
7
0
5
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2
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2
3
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1
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J
R
ec
o
n
f
i
g
u
r
ab
le
&
E
m
b
ed
d
ed
Sy
s
t
I
SS
N:
2089
-
4864
Gu
id
a
n
ce
d
ev
ice
fo
r
visu
a
lly
imp
a
ir
ed
p
eo
p
le
b
a
s
ed
o
n
u
ltr
a
s
o
n
ic
s
ig
n
a
ls
a
n
d
o
p
en
…
(
R
ica
r
d
o
Ya
u
r
i
)
527
B
I
O
G
RAP
H
I
E
S O
F
AUTH
O
RS
Ric
a
r
d
o
Y
a
u
r
i
is
a
m
a
ste
r
o
f
sc
ien
c
e
in
e
lec
tro
n
ic
e
n
g
in
e
e
rin
g
w
it
h
a
m
e
n
ti
o
n
i
n
b
io
m
e
d
ica
l
.
He
is
a
ss
o
c
iate
p
r
o
f
e
s
so
r
a
t
t
h
e
U
n
iv
e
rsid
a
d
Na
c
io
n
a
l
M
a
y
o
r
d
e
S
a
n
M
a
rc
o
s
(UN
M
S
M
)
a
n
d
P
h
.
D
.
stu
d
e
n
t
in
sy
st
e
m
s
e
n
g
in
e
e
rin
g
.
He
is
p
ro
f
e
ss
o
r
a
t
Un
iv
e
rsid
a
d
T
e
c
n
o
ló
g
ica
d
e
l
P
e
rú
a
n
d
Un
iv
e
rsid
a
d
P
e
r
u
a
n
a
d
e
l
No
r
te.
He
h
a
s
p
a
rti
c
ip
a
ted
a
s
a
tea
c
h
e
r
i
n
c
o
u
rse
s
o
rien
ted
to
th
e
In
tern
e
t
o
f
th
in
g
s
a
n
d
a
p
p
li
c
a
ti
o
n
s
in
h
o
m
e
a
u
to
m
a
ti
o
n
a
n
d
th
e
Cisc
o
a
c
a
d
e
m
y
f
o
r
Io
T
.
He
w
a
s
re
se
a
rc
h
e
r
a
t
INICT
EL
-
UN
I
in
t
h
e
e
m
b
e
d
d
e
d
sy
ste
m
s
a
n
d
i
n
tern
e
t
o
f
th
in
g
s
re
se
a
rc
h
g
ro
u
p
.
He
d
e
v
e
lo
p
e
d
r
e
se
a
rc
h
p
ro
jec
ts
o
n
t
h
e
im
p
le
m
e
n
tatio
n
o
f
lo
w
c
o
n
su
m
p
ti
o
n
I
o
T
d
e
v
ice
s
th
a
t
in
v
o
lv
e
in
f
e
r
e
n
c
e
tec
h
n
iq
u
e
s,
m
a
c
h
in
e
lea
rn
i
n
g
a
lg
o
rit
h
m
s
a
n
d
c
o
m
p
u
tatio
n
a
l
i
n
telli
g
e
n
c
e
.
He
c
a
n
b
e
c
o
n
tac
ted
a
t
e
m
a
il
:
C2
4
0
6
8
@u
t
p
.
e
d
u
.
p
e
,
or
ry
a
u
rir@u
n
m
s
m
.
e
d
u
.
p
e
.
K
e
v
in
Alv
a
r
ez
is
a
stu
d
e
n
t
o
f
th
e
e
lec
tro
n
ic
e
n
g
i
n
e
e
rin
g
c
a
re
e
r
a
t
th
e
Un
iv
e
rsid
a
d
Na
c
io
n
a
l
M
a
y
o
r
d
e
S
a
n
M
a
rc
o
s.
Cu
rre
n
tl
y
w
e
a
re
in
th
e
f
in
a
l
sta
g
e
o
f
o
u
r
stu
d
ies
a
n
d
th
e
re
i
s
g
re
a
t
e
n
th
u
sia
sm
f
o
r
h
a
rd
w
a
re
a
n
d
c
o
m
p
u
ter
tec
h
n
o
lo
g
y
.
A
t
th
e
len
g
th
o
f
it
s
a
c
a
d
e
m
ic
c
o
u
rse
,
it
h
a
s
d
e
m
o
n
stra
ted
e
x
c
e
p
ti
o
n
a
l
a
c
a
d
e
m
ic
re
c
o
rd
s
a
n
d
a
c
ti
v
e
ly
p
a
rti
c
i
p
a
ted
i
n
c
e
n
tralize
d
in
v
e
stig
a
ti
v
e
in
it
iativ
e
s
in
in
teg
ra
ted
s
y
ste
m
s
a
n
d
h
a
rd
w
a
re
.
Y
o
u
r
m
a
in
so
u
rc
e
is
o
n
t
h
e
in
tern
e
t
o
f
th
i
n
g
s
(Io
T
)
f
ield
,
w
h
e
re
y
o
u
m
a
k
e
sig
n
if
i
c
a
n
t
c
o
n
tri
b
u
ti
o
n
s to
th
e
d
e
v
e
lo
p
m
e
n
t
o
f
a
d
e
v
ice
th
a
t
su
p
p
o
rts
p
e
o
p
le
w
it
h
v
isu
a
l
d
isa
b
il
i
ti
e
s.
He
c
a
n
b
e
c
o
n
tac
ted
a
t
e
m
a
il
:
k
e
v
in
.
a
lv
a
r
e
z
@u
n
m
s
m
.
e
d
u
.
p
e
.
J
u
n
io
r
Co
ta
q
u
is
p
e
is
c
u
rre
n
tl
y
p
u
rsu
in
g
a
d
e
g
re
e
in
e
lec
tro
n
ic
e
n
g
in
e
e
rin
g
a
t
t
h
e
Un
iv
e
rsid
a
d
Na
c
io
n
a
l
M
a
y
o
r
d
e
S
a
n
M
a
rc
o
s,
re
a
c
h
in
g
th
e
f
in
a
l
p
h
a
se
o
f
h
is
a
c
a
d
e
m
ic
jo
u
rn
e
y
.
His
p
a
ss
io
n
f
o
r
h
a
rd
w
a
re
tec
h
n
o
l
o
g
y
a
n
d
c
o
m
p
u
ters
h
a
s
b
e
e
n
e
v
id
e
n
t
si
n
c
e
h
is
e
a
rly
y
e
a
rs.
He
is
p
a
rti
c
u
larly
in
tri
g
u
e
d
b
y
th
e
in
t
e
rn
e
t
o
f
th
i
n
g
s
(Io
T
)
d
o
m
a
in
a
n
d
h
a
s
d
e
lv
e
d
i
n
to
a
p
p
li
c
a
ti
o
n
s
re
late
d
to
h
o
m
e
a
u
to
m
a
ti
o
n
.
M
o
re
o
v
e
r,
Ju
a
n
p
o
ss
e
ss
e
s
a
k
e
e
n
in
tere
st
in
so
f
t
w
a
re
d
e
v
e
lo
p
m
e
n
t,
a
c
ti
v
e
l
y
e
n
g
a
g
in
g
in
th
e
c
re
a
ti
o
n
o
f
v
a
rio
u
s
a
p
p
li
c
a
ti
o
n
s
a
n
d
p
ro
g
ra
m
s.
He
c
a
n
b
e
c
o
n
tac
ted
a
t
e
m
a
il
:
ju
n
io
r.
c
o
taq
u
isp
e
@
u
n
m
s
m
.
e
d
u
.
p
e
.
J
o
r
d
y
Ynq
u
il
la
is
a
d
e
d
ica
ted
stu
d
e
n
t
o
f
e
lec
tro
n
ic
e
n
g
in
e
e
ri
n
g
a
t
Un
iv
e
rsid
a
d
Na
c
io
n
a
l
M
a
y
o
r
d
e
S
a
n
M
a
rc
o
s,
e
n
terin
g
th
e
c
o
n
c
lu
d
i
n
g
p
h
a
se
o
f
h
is
stu
d
ies
.
His
e
n
th
u
sia
sm
f
o
r
h
a
rd
w
a
re
a
n
d
c
o
m
p
u
ter
tec
h
n
o
lo
g
y
h
a
s
b
e
e
n
a
d
riv
in
g
f
o
rc
e
th
ro
u
g
h
o
u
t
h
is
a
c
a
d
e
m
ic
jo
u
r
n
e
y
.
De
m
o
n
stra
ti
n
g
e
x
c
e
p
ti
o
n
a
l
a
c
a
d
e
m
ic
a
c
h
iev
e
m
e
n
ts,
h
e
a
c
ti
v
e
l
y
p
a
rti
c
ip
a
ted
i
n
re
se
a
rc
h
p
ro
jec
ts
f
o
c
u
sin
g
o
n
in
t
e
g
ra
ted
s
y
ste
m
s
a
n
d
h
a
rd
w
a
re
.
His
p
rim
a
r
y
f
o
c
u
s
li
e
s
in
t
h
e
re
a
l
m
o
f
in
tern
e
t
o
f
t
h
in
g
s
(I
o
T
),
w
h
e
re
h
e
h
a
s
m
a
d
e
sig
n
if
ica
n
t
c
o
n
tri
b
u
ti
o
n
s
t
o
t
h
e
d
e
v
e
l
o
p
m
e
n
t
o
f
a
d
e
v
ic
e
a
id
in
g
in
d
iv
id
u
a
ls w
it
h
v
isu
a
l
im
p
a
irme
n
ts.
F
u
rt
h
e
rm
o
re
,
h
e
p
o
ss
e
ss
e
s
a
p
ro
f
o
u
n
d
i
n
tere
st
i
n
so
f
tw
a
re
d
e
v
e
lo
p
m
e
n
t,
a
c
ti
v
e
l
y
in
v
o
lv
e
d
in
c
re
a
ti
n
g
d
iv
e
rse
a
p
p
li
c
a
ti
o
n
s
a
n
d
p
ro
g
ra
m
s,
h
ig
h
li
g
h
ti
n
g
h
is
m
u
lt
ifac
e
ted
sk
il
ls
in
t
h
e
f
ield
.
He
c
a
n
b
e
c
o
n
tac
ted
a
t
e
m
a
il
:
jo
rd
y
.
y
n
q
u
il
la@
u
n
m
s
m
.
e
d
u
.
p
e
.
O
sc
a
r
Ller
e
n
a
is
m
a
ste
r
in
tele
c
o
m
m
u
n
ica
ti
o
n
s
e
n
g
in
e
e
rin
g
.
W
o
rk
e
x
p
e
rien
c
e
in
m
o
b
il
e
tele
p
h
o
n
e
n
e
tw
o
rk
s,
tran
sp
o
rt
n
e
tw
o
rk
s
b
a
se
d
o
n
m
icro
w
a
v
e
s
y
ste
m
s
,
a
n
d
u
n
d
e
rw
a
ter
f
ib
e
r
o
p
ti
c
n
e
tw
o
rk
s.
Ex
p
e
rien
c
e
i
n
sc
ien
ti
f
ic
re
se
a
rc
h
o
n
t
o
p
ics
re
l
a
ted
to
th
e
d
e
sig
n
o
f
p
a
ss
iv
e
m
icro
w
a
v
e
d
e
v
i
c
e
s
a
n
d
c
o
m
m
u
n
ica
ti
o
n
s
sy
ste
m
s
b
a
se
d
o
n
so
f
tw
a
r
e
d
e
f
in
e
d
ra
d
io
d
e
v
ice
s.
k
n
o
w
led
g
e
o
f
a
d
v
a
n
c
e
d
En
g
li
sh
a
n
d
a
d
v
a
n
c
e
d
P
o
rt
u
g
u
e
se
.
Ba
sic
-
in
term
e
d
iate
k
n
o
w
led
g
e
o
f
p
ro
g
ra
m
m
in
g
l
a
n
g
u
a
g
e
s
su
c
h
a
s
P
y
th
o
n
,
C
+
+
,
a
n
d
A
rd
u
in
o
.
He
c
a
n
b
e
c
o
n
tac
ted
a
t
e
m
a
il
:
o
sc
a
r.
ll
e
re
n
a
.
c
@g
m
a
il
.
c
o
m
.
Evaluation Warning : The document was created with Spire.PDF for Python.