Water,
Год журнала:
2024,
Номер
16(24), С. 3575 - 3575
Опубликована: Дек. 12, 2024
Predicting
suspended
sediment
concentration
(SSC)
profiles
with
high
accuracy
remains
a
critical
challenge
for
environmental
and
engineering
applications.
This
study
presents
novel,
data-driven
expert
system
that
leverages
knowledge-based
framework
to
select
optimal
SSC
models
based
on
diverse
flow
conditions.
The
utilizes
model
function
ranges
spatial
relationships
between
data
points
as
key
decision
factors.
methodology
is
applied
vertical
velocity
distribution
in
steady
uniform
river
flows.
systematically
extracts
categorizes
influencing
parameters,
generating
weighted
averages
interpolate
extrapolate
where
single
exhibit
limitations.
Two
weight
calculation
methods
are
implemented:
(1)
conditional
probability
approach
utilizing
within
control
cells,
(2)
an
isolated
point
analysis
distances
cell
centers.
exhibits
some
similarities
Voronoi
tessellations
associated
Laplace
Sibson
weights,
offering
robust
innovative
method
modeling.
proposed
empowers
hydrologists
engineers
by
selecting
applying
the
most
suitable
different
scenarios,
leading
enhanced
prediction
reliability.
work
represents
significant
advancement
field
of
transport
modeling,
providing
valuable
tool
improved
water
resource
management
protection.
Information,
Год журнала:
2025,
Номер
16(1), С. 19 - 19
Опубликована: Янв. 2, 2025
This
study
proposes
a
novel
optical
wireless
communication
system
for
high-speed,
large-capacity
data
transmission,
supporting
underwater
IoT
devices
in
shallow
seas.
The
employs
mirror-equipped
aerial
drone
as
relay
between
drones
and
terrestrial
station,
using
850
nm
signals
low
atmospheric
loss
enhanced
confidentiality.
Adaptive
modulation
optimizes
transmission
capacity
based
on
SNR,
accounting
air
channel
characteristics.
Experiments
confirmed
an
exponential
SNR
decrease
with
distance
(0.6–1.8
m)
demonstrated
successful
4K
UHD
video
streaming
seawater
(turbidity:
2.2
NTU)
without
quality
loss.
design
ensures
cost-effectiveness
stable
alignment
advanced
posture
control.
Sensors,
Год журнала:
2025,
Номер
25(4), С. 1053 - 1053
Опубликована: Фев. 10, 2025
This
study
proposes
a
bidirectional
underwater
optical
wireless
communication
network
that
maximizes
data
transmission
capacity
by
dynamically
switching
between
and
aerial
paths
based
on
channel
conditions.
The
proposed
system
employs
adaptive
modulation
beam
steering
techniques
to
address
dynamic
factors,
such
as
turbidity
distance,
in
channels.
experimental
results
revealed
the
path
when
distance
exceeded
1.8
m
led
significant
performance
improvements,
with
consistent
SNR
bit
rates
maintained
channel,
unlike
exponential
degradation
observed
underwater.
Dynamic
evaluations
demonstrated
high
stability,
even
incremental
increases
distances.
In
4K
UHD
video
streaming
experiment,
from
reduced
quality
degradation,
delivering
near-original
latency
low
20
ms.
Furthermore,
tolerance
experiments
for
misalignment
showed
sharp
drop
at
maximum
of
2
degrees,
12
dB
loss
reduction
222
Mbps
capacity.
These
findings
suggest
selectively
utilizing
conditions
enables
reliable
efficient
transmission,
paving
way
next-generation
networks.
Revista de Gestão e Secretariado (Management and Administrative Professional Review),
Год журнала:
2025,
Номер
16(4), С. e4815 - e4815
Опубликована: Апрель 4, 2025
The
study
evaluated
the
quality
of
water
consumed
at
Deuzuita
Melo
de
Albuquerque
Municipal
School
in
Marabá/PA,
aiming
for
compliance
with
standards
Ordinance
GM/MS
No.
888/2021
and
international
guidelines.
research
analysed
physicochemical
parameters
(pH,
residual
chlorine,
turbidity,
apparent
color)
microbiological
indicators
(total
coliforms
Escherichia
coli)
three
school
drinking
fountains.
samples
indicated
regulatory
limits,
ensuring
potability.
supply
system
consists
an
artesian
well
8,000-liter
reservoir,
maintenance
periodic
analysis
conducted
by
Quântica
Laboratório
Ambiental.
data
demonstrated
effective
disinfection,
balanced
pH
(6.0–9.5),
low
turbidity
(<1
TU),
absence
E.
coli.
underscores
importance
continuous
monitoring
environments
to
prevent
waterborne
diseases
ensure
health
academic
performance.
findings
contribute
public
policies
focused
on
management
infrastructure,
emphasizing
educational
environmental
awareness
initiatives.
Applied Sciences,
Год журнала:
2025,
Номер
15(8), С. 4130 - 4130
Опубликована: Апрель 9, 2025
The
Building
Safe
Water
Use
Plan
promoted
by
the
Macao
Marine
and
Bureau
aims
to
encourage
property
management
entities
regularly
maintain
building
water
supply
systems
ensure
safety
stability
of
drinking
water.
However,
traditional
laboratory
testing
methods
are
often
time-consuming
labor-intensive,
making
real-time
efficient
quality
monitoring
challenging.
To
address
this
issue,
study
proposes
a
Raspberry
Pi-based
multi-sensor
system
for
rapid
detection
improved
efficiency.
This
integrates
multiple
sensors
measure
key
parameters,
such
as
pH,
total
dissolved
solids
(TDSs),
temperature,
turbidity,
while
recording
data
in
real-time.
were
continuously
collected
over
period
five
months
(July
November
2024).
analyzed
validated
using
machine
learning
algorithms,
including
Isolation
Forest,
Random
Logistic
Regression,
Local
Outlier
Factor.
Among
these
models,
Forest
exhibited
best
overall
performance,
achieving
an
accuracy
98.10%
F1
score
98.99%.
These
results
show
that
dataset
demonstrates
high
reliability
anomaly
classification
tasks,
accurately
identifying
deviations
quality.
approach
not
only
enhances
efficiency
but
also
provides
technological
support
urban
management.
