Developing a dynamic combined power quality index for assessing the performance of a nuclear facility
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 25, 2025
Abstract
Studying
and
evaluating
the
power
quality
(PQ)
of
an
electrical
network
for
nuclear
installation
is
important
issue
a
hot
research
topic
guaranteeing
reliable
safe
operation
sensitive
loads
during
this
type
installation.
As
several
PQ
phenomena
determine
overall
performance,
analyzing
signals
one
major
challenges
researchers
in
field.
Technically,
voltage
imbalance,
current
harmonic
distortion,
factor
are
five
that
judge
performance
system.
Multicriteria
decision-making
(MCDM)
used
here
as
methodology
to
identify
weighting
each
phenomenon.
This
paper
proposes
evaluation
method
reactor
(NRR)
based
on
two
MCDM.
Methods
analytic
hierarchy
process
(AHP)
criterion
importance
through
inter-criteria
correlation
(CRITIC).
A
MATLAB/Simulink
model
NRR
system
presented,
then
its
validity
credibility
verified
via
measurements.
In
study,
different
abnormal
conditions
simulated
generate
disturbances,
including
three-phase
nonlinear
load
simulate
harmonics,
unbalanced
unbalance,
inductive
change
factor.
The
effectiveness
robustness
proposed
demonstrated
these
case
studies.
results
show
obtained
CPQI
dynamic
weight
approach
allows
more
accurate
evaluations
by
adjusting
various
depending
operational
priorities.
main
contribution
single
compound
index
(CPQI)
was
developed
both
weights
from
AHP-CRITIC
methods
under
conditions,
considering
threshold
level
phenomena.
analysis
shows
accurately
evaluates
performance.
Язык: Английский
Construction of Evaluation System of Civic Education Work of College Students Based on Decision Tree Algorithm in New Media Era
Applied Mathematics and Nonlinear Sciences,
Год журнала:
2025,
Номер
10(1)
Опубликована: Янв. 1, 2025
Abstract
The
student
group
is
the
hierarchical
talent
of
socialist
modernization
with
Chinese
characteristics
in
new
era,
and
an
important
guarantee
for
prosperity
development
country.
By
exploring
implementation
path
evaluation
index
system
civic
politics,
a
proposal
has
been
made
college
students’
politics
education.
traditional
ID3
decision
tree
algorithm
optimized
problem
long
time
that
may
occur
when
discretizing
data,
improved
used
to
generate
political
education
work,
eight
effective
indicators
are
screened.
G1
CRITIC
methods
were
selected
calculate
subjective
objective
weights,
then
G1-CRITIC
model
was
established
determine
combination
weights
using
game
theory
assignment
method.
results
study
show
highest
percentage
seven
one-time
employment
rate
(0.21099),
which
indicates
research
content
this
paper
provides
reference
universities
carry
out
work
Civic
Political
Education.
Язык: Английский
Analysis of Business Sophistication Performance in G7 Countries: An Application of the MIEXCF-based CODAS Method
International Journal of Business and Economic Studies,
Год журнала:
2025,
Номер
7(1), С. 33 - 55
Опубликована: Март 31, 2025
The
business
sophistication
(BS)
performance
of
major
economies
significantly
influences
global
BS
and
the
economy.
Consequently,
analyzing
these
is
crucial.
Therefore,
aim
this
study
to
evaluate
G7
countries
using
MIEXCF-based
CODAS
method,
based
on
most
recent
Global
Innovation
Index
-
Business
Sophistication
(GII-BS)
criteria.
Empirical
findings
reveal
that
"Knowledge
Workers"
Absorption"
are
significant
criteria
for
countries,
according
MIEXCF
method.
should
place
greater
emphasis
make
a
contribution
development
Furthermore,
was
measured
rankings
were
determined
as
follows:
USA,
Japan,
UK,
France,
Germany,
Canada,
Italy.
Additionally,
calculated
average
value,
it
found
Italy
had
below-average
values.
concluded
need
improve
their
contribute
more
Methodologically,
sensitivity,
comparative,
simulation
analyses
indicate
method
can
be
effectively
used
measure
GII-BS
Язык: Английский
Assessment of the Spatiotemporal Evolution Characteristics and Driving Factors of Ecological Vulnerability in the Hubei Section of the Yangtze River Economic Belt
S. L. Wu,
Guanzhong Zeng,
Jie Sun
и другие.
Land,
Год журнала:
2025,
Номер
14(5), С. 996 - 996
Опубликована: Май 5, 2025
The
Hubei
section
of
the
Yangtze
River
Economic
Belt
(YREB)
has
an
important
strategic
position
as
core
zone
central
part
YREB,
and
advantages
disadvantages
its
ecological
environment
are
closely
related
to
development
quality
whole
YREB.
Moreover,
systematic
assessment
vulnerability
is
great
significance
regional
environmental
protection,
rational
exploitation
utilization
resources,
sustainable
development.
Based
on
pressure–state–response–management
model,
this
study
analyzes
spatial
temporal
evolution
characteristics
YREB
influencing
factors
using
G1–CRITIC–game
theory
combination
weighting,
Theil
index,
Ridge
regression
model.
results
show
that
from
2010
2023,
area
was
characterized
by
medium
vulnerability,
with
average
share
58.2%;
degree
rose
then
fell;
gradually
improved;
there
overall
distribution
pattern
high
in
low
east
west.
On
trend
transformation,
62.2%
remained
unchanged,
21%
shifted
16.8%
increased
level.
index
decreased
rose,
agglomeration
floating
a
“V”
shape,
essentially
same
hot-
cold-spot
areas.
Among
six
functional
protection
zones,
soil
preservation
function
exhibited
lowest
(EVI)
at
0.371.
From
water
source
conservation
demonstrated
significant
decline
EVI,
while
remaining
zones
showed
gradual
upward
EVI.
human
disturbance
main
driver
affecting
change
pressure
layer
key
influence
criterion
layer.
This
can
provide
reasonable
evaluation
model
analytical
framework
for
scientific
objective
vulnerability.
Язык: Английский
Optimal Solar‐Biomass‐Diesel‐Generator Hybrid Energy for Water Pumping System Considering Demand Response
Engineering Reports,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 22, 2024
ABSTRACT
The
water
pumping
system
is
a
vital
daily
operation
for
sustainable
society.
demand
this
essential
commodity
progressively
growing
around
the
world.
Incorporating
renewable
energy
sources
(RES)
into
its
mitigates
adverse
environmental
effects
stemming
from
greenhouse
gas
(GHG)
emissions
and
reduces
associated
costs
linked
to
fossil
fuel
sources.
Hence,
optimal
sizing
of
hybrid
mix
RES
non‐RES
power
essential.
This
study
employs
generalized
reduced
gradient
(GRG)
optimization
method
ascertain
most
effective
(WPS)
application
by
integrating
time
use
response.
achieved
through
four
scenarios:
Scenario
1
(S1)
utilizes
grid
Diesel
generator
(DG)
sources,
2
(S2)
incorporates
power,
DG,
solar
PV,
3
(S3)
integrates
biomass
while
4
(S4)
Time
Use
(TOU)
with
three
aforementioned
key
findings
reveal
an
ideal
solution
comprising
PV
along
non‐renewable
source
embedded
response
capacities
4007
kW
4228
grid,
234
biomass,
1085
DG
owing
least
cost
pumped
0.75$/kW
1.74$/kL,
respectively,
volume
270.50
kL.
These
prove
that
integration
TOU
program
grid‐biomass‐DG‐solar
best
suited
applications
as
it
gives
cost‐competitive
value.
Язык: Английский