Applied Sciences,
Год журнала:
2024,
Номер
14(16), С. 6879 - 6879
Опубликована: Авг. 6, 2024
In
conventional
gasoline
automobiles,
the
engine
powers
air
conditioning
system
and
noise
can
somewhat
mask
vibration
of
system.
pure
electric
vehicles,
however,
absence
an
makes
system’s
more
noticeable,
concentrated
in
a
limited
frequency
range
at
constant
speeds.
As
result,
aerodynamic
from
is
primary
source
vehicles.
Pipeline
silencers
are
main
method
for
reducing
this
noise.
The
current
silencer
design
uses
plane
wave
acoustic
theory
but
when
cavity
modal
resonance
occurs,
transmission
loss
error
relatively
high.
This
article
addresses
issue
non-planar
resonance,
studying
muffler
using
finite
element
to
reveal
under
mode
resonance.
A
dual
expansion
structure
impedance
composite
proposed,
with
sound-absorbing
materials
placed
enhance
performance.
analysis
characteristics
provides
theoretical
basis
control
vehicle
systems.
Journal of Urban Design,
Год журнала:
2024,
Номер
unknown, С. 1 - 30
Опубликована: Май 23, 2024
This
study
assesses
the
early
outcomes
of
Poblenou
Superblock
in
Barcelona
and
a
nature-based
solutions
project
Valladolid.
By
critically
analysing
available
data
collecting
residents'
perceptions,
analysis
depicts
to
what
extent
project's
interventions
enhanced
environmental
quality
well-being.
Results
highlight
role
traffic
space
recovery
strategy
as
driver
for
larger
benefits,
allowing
creation
socially
attractive
public
spaces
along
with
greenery.
led
more
appreciated
interventions,
possibly
boosted
by
post-pandemic
context
city
branding
strategy.
A
potential
downside
concerns
likely
gentrification
processes
triggered
these
improvements.
Environmental Research,
Год журнала:
2024,
Номер
257, С. 119324 - 119324
Опубликована: Июнь 5, 2024
As
the
world
becomes
increasingly
urbanised,
there
is
recognition
that
public
and
planetary
health
relies
upon
a
ubiquitous
transition
to
sustainable
cities.
Disentanglement
of
complex
pathways
urban
design,
environmental
exposures,
health,
magnitude
these
associations,
remains
challenge.
A
state-of-the-art
account
large-scale
studies
required
shape
future
research
priorities
equity-
evidence-informed
policies.
Based
on
the
principle
of
distributed
layout,
community
is
chosen
as
basic
unit
city,
and
an
appropriate
scale
redefined
based
attributes
characteristics
green
production.
This
article
first
summarizes
existing
research
models
at
level
using
bibliometric
methods,
this
basis
process
researching
productive
constructed.
Subsequently,
data
scales
agriculture,
energy,
transport,
commercial
facilities
from
relevant
Chinese
national
city
standards
are
summarized,
classified,
generalized.
followed
by
derivation
grid
for
units.
Ultimately,
a
quadratic
optimization
was
devised
units
varying
levels
fractal
management
theory.
paper
presents
new
constructed
use
in
large-
medium-sized
areas
China,
which
serves
illustrative
example.
The
newly
developed
has
potential
to
improve
efficiency
resource
allocation
support
transition
functional
adjustment
structural
urban
areas.
Furthermore,
definition
method
can
be
extended
applied
other
globally.
Marine and Freshwater Research,
Год журнала:
2025,
Номер
76(2)
Опубликована: Янв. 21, 2025
Context
With
the
aging
population,
community
water
ecological
design
plays
a
critical
role
in
promoting
health
behaviours
of
elderly
by
enhancing
environmental
perception,
psychological
comfort,
and
satisfaction.
Aims
This
study
investigates
direct
indirect
effects
on
elderly,
utilising
social–ecological
model
to
explore
mediating
pathways.
Methods
A
questionnaire
survey
315
individuals
(aged
60
above)
Guangzhou,
China,
was
conducted,
covering
dimensions
such
as
design,
comfort
behaviours.
Structural
equation
modelling
used
for
data
analysis.
Key
results
Community
significantly
enhances
satisfaction
which
directly
indirectly
influence
health-behaviour
intentions
actual
through
multiple
mechanisms.
Conclusions
is
significant
determinant
exerting
both
influences
well-being
improved
Implications
Optimising
elements
can
improve
outcomes
populations,
providing
theoretical
practical
support
creating
elderly-friendly
communities.
