Journal of Engineering Science and Technology Review,
Год журнала:
2023,
Номер
16(6), С. 98 - 107
Опубликована: Дек. 1, 2023
With
the
growth
of
large
parcel
transportation,
it
is
vital
for
road
LTL
(less-than-truckload)
cargo
transportation
to
improve
operational
efficiency
and
effectiveness.In
order
investigate
influence
network
structure
on
transport
cost,
a
hybrid
hub-and-spoke
optimization
model
was
proposed
in
this
study.The
capacity
freight
hubs
restriction
in-transit
time
were
considered,
lowest
cost
used
as
goal
model.The
artificial
fish
swarm
algorithm
(AFSA)
applied
solve
model.A
case
study
Guangdong
Shunxin
Express
Company
China
conducted
compare
transit
strategy
obtained
using
different
structures.Results
demonstrate
that,
operating
with
limits
reduces
by
4.04%
3.02%
when
compared
that
all-direct
actual
network,
respectively.The
increases
3.59%
equal
limit.The
number
routes
include
direct
via
one
hub
increase
9
6,
two
decreases
15
based
limit.These
findings
indicate
saves
timeliness
transportation.This
provides
good
reference
operation
enterprises.
Sustainability,
Год журнала:
2025,
Номер
17(5), С. 2181 - 2181
Опубликована: Март 3, 2025
With
the
increasing
presence
of
large-scale
new
energy
sources,
such
as
wind
and
photovoltaic
(PV)
systems,
integrating
traditional
hydropower
with
PV
power
into
a
hydro–wind–PV
complementary
system
in
economic
dispatch
can
effectively
mitigate
fluctuations.
In
this
study,
Markov
chains
Copula
joint
distribution
function
were
adopted
to
quantize
spatiotemporal
relationships
among
hydro,
PV,
whereby
runoff,
wind,
output
scenarios
generated
simulate
their
uncertainties.
A
dual-objective
optimization
model
is
proposed
for
long-term
co-scheduling
(LHWP-CS)
problem.
To
solve
model,
well-tailored
evolutionary
multi-objective
method
was
developed,
which
combines
multiple
recombination
operators
two
different
dominance
rules
basic
elite
populations.
The
algorithm
tested
on
three
annual
reservoirs
large
farms
Hongshui
River
Basin.
demonstrates
superior
performance,
average
improvements
2.90%
2.63%
total
generation,
1.23%
0.96%
minimum
expectation
compared
BORG
NSGA-II,
respectively.
results
also
infer
that
number
key
parameter
achieving
tradeoff
between
economics
risk.
Abstract
Phytoplankton
play
a
crucial
role
in
maintaining
the
health
of
river
ecosystems,
and
their
communities
are
closely
linked
to
hydrodynamics.
In
inland
waterways,
disturbances
generated
by
ship
propellers
alter
flow
dynamics
may
affect
phytoplankton
communities.
To
clarify
it,
Zhenjiang
section
Beijing–Hangzhou
Grand
Canal
(BHGC)
China,
world's
longest
canal,
were
studied
compared
them
with
its
undisturbed
tributaries.
The
results
revealed
major
alternations
seasonal
patterns
BHGC,
shifting
peak
density
from
spring
autumn
lowest
diversity
summer
autumn.
Ship
increased
water
turbidity
created
optimal
N/P
ratios,
which
provided
Cyanobacteria
competitive
advantage
proliferation
resulted
exceeding
that
tributaries
more
than
tenfold,
accompanied
decrease
level.
Due
habitat
alterations,
functional
groups
emerged
resilient
strong
high
turbidity.
findings
add
understanding
impact
traffic
on
ecosystems.
