He was also involved in work on semiconductor diode s, which were the forerunners of the revolution in electronics brought about by the advent of solid-state semiconductor components. In 1945 he joined the National Acoustic Laboratories where he worked on the design and construction of hearing aids for children. Aitchison was appointed as Senior Lecturer in Communications Engineering at the University of Sydney, which was the start of his 25-year teaching experience at that institution, culminating in his appointment as Associate Professor.
He was also involved in work on semiconductor diode s, which were the forerunners of the revolution in electronics brought about by the advent of solid-state semiconductor components.
nsubj:pass
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
He
PRON
PRP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
advmod
also
also
ADV
RB
root
Tense=Past|VerbForm=Part|Voice=Pass
involve
involved
VERB
VBN
case
in
in
ADP
IN
obl
Number=Sing
work
work
NOUN
NN
case
on
on
ADP
IN
compound
Number=Sing
semiconductor
semiconductor
NOUN
NN
nmod
Number=Sing
diode
diode
NOUN
NN
case
Typo=Yes
's
s
PART
POS
punct
,
,
PUNCT
,
nsubj
PronType=Rel
which
which
PRON
WDT
cop
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
be
were
AUX
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
acl:relcl
Number=Plur
forerunner
forerunners
NOUN
NNS
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
revolution
revolution
NOUN
NN
case
in
in
ADP
IN
nmod
Number=Plur
electronics
electronics
NOUN
NNS
acl
Tense=Past|VerbForm=Part
bring
brought
VERB
VBN
compound:prt
about
about
ADP
RP
case
by
by
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl:agent
Number=Sing
advent
advent
NOUN
NN
case
of
of
ADP
IN
amod
Degree=Pos
solid
solid
ADJ
JJ
punct
-
-
PUNCT
HYPH
compound
Number=Sing
state
state
NOUN
NN
compound
Number=Sing
semiconductor
semiconductor
NOUN
NN
nmod
Number=Plur
component
components
NOUN
NNS
punct
.
.
PUNCT
.
In 1945 he joined the National Acoustic Laboratories where he worked on the design and construction of hearing aids for children.
case
in
In
ADP
IN
obl
NumForm=Digit|NumType=Card
1945
1945
NUM
CD
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
join
joined
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
National
National
ADJ
NNP
amod
Degree=Pos
acoustic
Acoustic
ADJ
NNP
obj
Number=Plur
Laboratories
Laboratories
PROPN
NNPS
advmod
PronType=Rel
where
where
ADV
WRB
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
work
worked
VERB
VBD
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
design
design
NOUN
NN
cc
and
and
CCONJ
CC
conj
Number=Sing
construction
construction
NOUN
NN
case
of
of
ADP
IN
compound
Number=Sing
hearing
hearing
NOUN
NN
nmod
Number=Plur
aid
aids
NOUN
NNS
case
for
for
ADP
IN
nmod
Number=Plur
child
children
NOUN
NNS
punct
.
.
PUNCT
.
Aitchison was appointed as Senior Lecturer in Communications Engineering at the University of Sydney, which was the start of his 25-year teaching experience at that institution, culminating in his appointment as Associate Professor.
nsubj:pass
Number=Sing
Aitchison
Aitchison
PROPN
NNP
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
root
Tense=Past|VerbForm=Part|Voice=Pass
appoint
appointed
VERB
VBN
case
as
as
ADP
IN
amod
Degree=Pos
senior
Senior
ADJ
NNP
obl
Number=Sing
Lecturer
Lecturer
PROPN
NNP
case
in
in
ADP
IN
compound
Number=Plur
Communication
Communications
PROPN
NNPS
nmod
Number=Sing
Engineering
Engineering
PROPN
NNP
case
at
at
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
University
University
PROPN
NNP
case
of
of
ADP
IN
nmod
Number=Sing
Sydney
Sydney
PROPN
NNP
punct
,
,
PUNCT
,
nsubj
PronType=Rel
which
which
PRON
WDT
cop
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
acl:relcl
Number=Sing
start
start
NOUN
NN
case
of
of
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
nummod
NumForm=Digit|NumType=Card
25
25
NUM
CD
punct
-
-
PUNCT
HYPH
compound
Number=Sing
year
year
NOUN
NN
compound
Number=Sing
teaching
teaching
NOUN
NN
nmod
Number=Sing
experience
experience
NOUN
NN
case
at
at
ADP
IN
det
Number=Sing|PronType=Dem
that
that
DET
DT
nmod
Number=Sing
institution
institution
NOUN
NN
punct
,
,
PUNCT
,
acl
VerbForm=Ger
culminate
culminating
VERB
VBG
case
in
in
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl
Number=Sing
appointment
appointment
NOUN
NN
case
as
as
ADP
IN
compound
Number=Sing
associate
Associate
NOUN
NN
nmod
Number=Sing
Professor
Professor
PROPN
NNP
punct
.
.
PUNCT
.