IEEE Access,
Год журнала:
2022,
Номер
10, С. 121204 - 121229
Опубликована: Янв. 1, 2022
In
this
paper,
curve-fitting
and
an
artificial
neural
network
(ANN)
model
were
developed
to
predict
R-Event.
Expected
number
of
new
infections
that
arise
in
any
event
occurring
over
a
total
time
space
is
termed
as
Real-time
data
for
the
office
environment
was
gathered
spring
2022
naturally
ventilated
room
Roorkee,
India,
under
composite
climatic
conditions.
To
ascertain
merit
proposed
ANN
models,
performances
approach
compared
against
curve
fitting
regarding
conventional
statistical
indicators,
i.e.,
correlation
coefficient,
root
mean
square
error,
absolute
Nash-Sutcliffe
efficiency
index,
percentage
a20-index.
Eleven
input
parameters
namely
indoor
temperature
(
TIn
),
relative
humidity
xmlns:xlink="http://www.w3.org/1999/xlink">RHIn
area
opening
xmlns:xlink="http://www.w3.org/1999/xlink">AO
occupants
xmlns:xlink="http://www.w3.org/1999/xlink">O
per
person
xmlns:xlink="http://www.w3.org/1999/xlink">AP
volume
xmlns:xlink="http://www.w3.org/1999/xlink">VP
xmlns:xlink="http://www.w3.org/1999/xlink">CO
2
concentration
air
quality
index
xmlns:xlink="http://www.w3.org/1999/xlink">AQI
outer
wind
speed
xmlns:xlink="http://www.w3.org/1999/xlink">WS
outdoor
xmlns:xlink="http://www.w3.org/1999/xlink">TOut
xmlns:xlink="http://www.w3.org/1999/xlink">RHOut
)
used
study
R-Event
value
output.
The
primary
goal
research
establish
link
between
value;
eventually
providing
prediction
purposes.
case
study,
coefficient
0.9992
0.9557,
respectively.
It
shows
model's
higher
accuracy
than
prediction.
Results
indicate
performance
(R=0.9992,
RMSE=0.0018708,
MAE=0.0006675,
MAPE=0.8643816,
NS=0.9984365,
a20-index=0.9984300)
reliable
highly
accurate
R-event
offices.
Sustainable Cities and Society,
Год журнала:
2021,
Номер
75, С. 103262 - 103262
Опубликована: Авг. 13, 2021
In
Spain,
the
COVID-19
confinement
was
carried
out
in
spring
of
2020.
All
non-essential
activities
were
temporarily
suspended.
This
brought
with
it
adaptation
to
home
office
(telework),
still
emerging
Europe,
and
more
Spain.
Although
response
general
has
been
positive,
conditions
which
families
have
subjected
telework
cannot
be
considered
normal.
this
context,
an
online
survey
requested
find
experience
confined
households
relation
dwelling
satisfaction
following
new
needs
lockdown.
The
data
obtained
on
workspace
perception
its
adequacy
studied
Madrid,
stratified
by
gender
average
income,
for
a
sample
256
people
teleworking
or
studying.
results
showed
that
spaces
insufficient
third
households,
no
significant
relationship
most
socioeconomic
variables,
nor
characteristics.
variables
related
inadequacy
were:
number
who
work
study
at
home;
lack
exclusive
teleworking;
availability
digital
resources.
also
depended
qualities
space,
as
size,
furniture
lighting,
among
others.
Wireless Communications and Mobile Computing,
Год журнала:
2022,
Номер
2022, С. 1 - 16
Опубликована: Март 7, 2022
Air
pollution
is
increasing
profusely
in
Indian
cities
as
well
throughout
the
world,
and
it
poses
a
major
threat
to
climate
health
of
all
living
things.
reason
behind
degraded
indoor
air
quality
(IAQ)
urban
buildings.
Carbon
dioxide
(CO2)
main
contributor
humans
themselves
are
one
generating
sources
this
pollutant.
The
testing
monitoring
CO2
consume
cost
time
require
smart
sensors.
Thus,
solve
these
limitations,
machine
learning
(ML)
has
been
used
predict
concentration
inside
an
office
room.
This
study
based
on
data
collected
through
real-time
measurements
CO2,
number
occupants,
area
per
person,
outdoor
temperature,
outer
wind
speed,
relative
humidity,
index
input
parameters.
In
study,
ten
algorithms,
namely,
artificial
neural
network
(ANN),
support
vector
(SVM),
decision
tree
(DT),
Gaussian
process
regression
(GPR),
linear
(LR),
ensemble
(EL),
optimized
GPR,
EL,
DT,
SVM,
were
CO2.
It
found
that
GPR
model
performs
better
than
other
selected
models
terms
prediction
accuracy.
result
indicated
can
with
highest
accuracy
having
,
RMSE,
MAE,
NS,
a20-index
values
0.98874,
4.20068
ppm,
3.35098
0.9817,
1,
respectively.
be
utilized
by
designers,
researchers,
healthcare
professionals,
city
developers
analyse
for
designing
ventilation
systems
level
The Science of The Total Environment,
Год журнала:
2023,
Номер
879, С. 163007 - 163007
Опубликована: Март 23, 2023
Ultraviolet
irradiation
C
(UVC)
has
emerged
as
an
effective
strategy
for
microbial
control
in
indoor
public
spaces.
UVC
is
commonly
applied
air,
surface,
and
water
disinfection.
Unlike
common
254
nm
UVC,
far-UVC
at
222
considered
non-harmful
to
human
health,
being
safe
occupied
spaces,
still
disinfection
purposes.
Therefore,
allied
the
urgency
mitigate
current
pandemic
of
SARS-CoV-2,
increase
UVC-based
technology
devices
appeared
market
with
levels
pathogens
reduction
higher
than
99.9
%.
This
environmentally
friendly
potential
overcome
many
limitations
traditional
chemical-based
approaches.
The
novel
were
thought
be
used
spaces
such
hospitals,
schools,
transport
minimize
risk
contamination
propagation,
saving
costs
by
reducing
manual
cleaning
equipment
maintenance
provided
manpower.
However,
a
lack
information
about
parameters
protocols
disinfection,
controversies
regarding
health
environmental
risks
exist.
In
this
review,
fundamentals
on
are
presented.
Furthermore,
deep
analysis
technologies
available
addressed,
well
their
advantages
limitations.
comprehensive
provides
valuable
inputs
strategies
development
effective,
reliable,
systems.
Heliyon,
Год журнала:
2024,
Номер
10(7), С. e28216 - e28216
Опубликована: Март 28, 2024
Digital
technology
and
economy
have
profound
impact
on
rural
revitalization
become
important
initiatives
to
promote
development.
This
study
analyzes
the
spatial
effect
of
digital
in
Guangdong,
China.
