<s>
LambdaNative	B-Application
is	O
an	O
open-source	O
cross-platform	O
development	O
environment	O
written	O
on	O
top	O
of	O
the	O
Gambit-C	B-Language
Scheme	I-Language
implementation	O
of	O
the	O
Scheme	B-Language
programming	I-Language
language	I-Language
,	O
supporting	O
the	O
creation	O
of	O
native	O
applications	O
on	O
a	O
range	O
of	O
mobile	O
,	O
desktop	O
and	O
embedded	O
platforms	O
.	O
</s>
<s>
The	O
underlying	O
Scheme	B-Language
programming	I-Language
language	I-Language
has	O
a	O
long	O
tradition	O
of	O
use	O
in	O
theoretical	O
computer	O
science	O
,	O
artificial	B-Application
intelligence	I-Application
and	O
rapid	O
program	O
development	O
.	O
</s>
<s>
The	O
Scheme	B-Language
programming	I-Language
language	I-Language
was	O
designed	O
as	O
a	O
simplified	O
and	O
more	O
abstract	O
variant	O
of	O
the	O
early	O
Lisp	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
first	O
Lisp	B-Language
implementation	O
was	O
available	O
in	O
1958	O
,	O
Scheme	B-Language
was	O
introduced	O
in	O
1975	O
.	O
</s>
<s>
Development	O
of	O
LambdaNative	B-Application
toolkit	O
started	O
in	O
2009	O
at	O
the	O
Pediatric	O
Anesthesia	O
Research	O
Team	O
(	O
PART	O
)	O
in	O
Vancouver	O
,	O
Canada	O
.	O
</s>
<s>
The	O
core	O
LambdaNative	B-Application
framework	O
was	O
open-sourced	O
in	O
2013	O
.	O
</s>
<s>
LambdaNative	B-Application
combines	O
the	O
possibilities	O
of	O
a	O
rapid	O
prototyping	O
environment	O
using	O
Scheme	B-Language
and	O
C	O
programming	O
languages	O
(	O
feature	O
of	O
the	O
underlying	O
Gambit-C	B-Language
implementation	O
)	O
with	O
easy	O
cross-platform	O
software	O
generation	O
and	O
a	O
set	O
of	O
modules	O
including	O
GUI	O
programming	O
,	O
fast	O
Fourier	O
transform	O
and	O
modules	O
to	O
access	O
typical	O
phone	O
hardware	O
components	O
such	O
as	O
camera	O
,	O
GPS	O
and	O
audio	O
.	O
</s>
<s>
LambdaNative	B-Application
is	O
released	O
under	O
the	O
BSD	B-Operating_System
License	I-Operating_System
.	O
</s>
<s>
LambdaNative	B-Application
supports	O
building	O
native	O
applications	O
for	O
the	O
following	O
operating	O
systems	O
:	O
</s>
<s>
LambdaNative	B-Application
applications	O
are	O
written	O
in	O
the	O
Scheme	B-Language
language	I-Language
which	O
can	O
be	O
easily	O
mixed	O
with	O
C	O
code	O
.	O
</s>
<s>
Scheme	B-Language
is	O
a	O
high	O
level	O
functional	O
language	O
with	O
a	O
very	O
simple	O
and	O
expressive	O
syntax	O
.	O
</s>
<s>
LambdaNative	B-Application
uses	O
Gambit-C	B-Language
Scheme	I-Language
,	O
a	O
portable	O
standards-compliant	O
Scheme	B-Language
to	O
C	O
compiler	O
.	O
</s>
<s>
Applications	O
written	O
in	O
the	O
framework	O
can	O
be	O
either	O
event-loop	O
driven	O
graphical	O
applications	O
or	O
console	B-Device
applications	I-Device
,	O
and	O
code	O
can	O
be	O
abstracted	O
in	O
the	O
form	O
of	O
modules	O
and	O
plugins	O
.	O
</s>
<s>
LambdaNative	B-Application
does	O
not	O
require	O
the	O
use	O
of	O
an	O
Integrated	B-Application
Development	I-Application
Environment	I-Application
(	O
IDE	O
)	O
.	O
</s>
<s>
The	O
build	O
system	O
follows	O
the	O
conventional	O
configure	B-Device
,	O
make	B-Application
,	O
make	B-Application
install	O
command	O
format	O
.	O
</s>
<s>
LambdaNative	B-Application
utilizes	O
the	O
OpenGL	B-Application
and	O
OpenGL	B-Application
ES	I-Application
hardware	O
accelerated	O
graphics	O
layer	O
on	O
the	O
target	O
platforms	O
,	O
and	O
provides	O
a	O
full	O
widget-based	O
2D	O
graphics	O
engine	O
.	O
</s>
<s>
LambdaNative	B-Application
supports	O
both	O
playback	O
of	O
audio	O
files	O
(	O
OGG	B-Algorithm
or	O
WAV	O
)	O
format	O
,	O
and	O
real-time	O
full-duplex	O
bidirectional	O
audio	O
.	O
</s>
<s>
LambdaNative	B-Application
supports	O
access	O
to	O
accelerometers	O
,	O
gyroscopes	B-Application
,	O
GPS	O
locators	O
and	O
other	O
sensors	O
where	O
available	O
on	O
mobile	O
devices	O
.	O
</s>
<s>
LambdaNative	B-Application
has	O
been	O
used	O
for	O
a	O
diverse	O
range	O
of	O
medical	O
applications	O
,	O
for	O
example	O
the	O
Phone	O
Oximeter	O
,	O
a	O
smartphone	O
based	O
low-cost	O
pulse	O
oximeter	O
.	O
</s>
<s>
LambdaNative-based	O
applications	O
have	O
been	O
used	O
in	O
clinical	O
trials	O
on	O
>50	O
,	O
000	O
subjects	O
in	O
Canada	O
,	O
France	O
,	O
India	O
,	O
Uganda	O
,	O
Bangladesh	O
,	O
and	O
South	O
Africa	O
,	O
in	O
>10	O
separate	O
clinical	O
studies	O
.	O
</s>
