12,531 research outputs found
The Influence of Neural Networks on Hydropower Plant Management in Agriculture: Addressing Challenges and Exploring Untapped Opportunities
Hydropower plants are crucial for stable renewable energy and serve as vital
water sources for sustainable agriculture. However, it is essential to assess
the current water management practices associated with hydropower plant
management software. A key concern is the potential conflict between
electricity generation and agricultural water needs. Prioritising water for
electricity generation can reduce irrigation availability in agriculture during
crucial periods like droughts, impacting crop yields and regional food
security. Coordination between electricity and agricultural water allocation is
necessary to ensure optimal and environmentally sound practices. Neural
networks have become valuable tools for hydropower plant management, but their
black-box nature raises concerns about transparency in decision making.
Additionally, current approaches often do not take advantage of their potential
to create a system that effectively balances water allocation.
This work is a call for attention and highlights the potential risks of
deploying neural network-based hydropower plant management software without
proper scrutiny and control. To address these concerns, we propose the adoption
of the Agriculture Conscious Hydropower Plant Management framework, aiming to
maximise electricity production while prioritising stable irrigation for
agriculture. We also advocate reevaluating government-imposed minimum water
guidelines for irrigation to ensure flexibility and effective water allocation.
Additionally, we suggest a set of regulatory measures to promote model
transparency and robustness, certifying software that makes conscious and
intelligent water allocation decisions, ultimately safeguarding agriculture
from undue strain during droughts
A Self-Adaptive Penalty Method for Integrating Prior Knowledge Constraints into Neural ODEs
The continuous dynamics of natural systems has been effectively modelled
using Neural Ordinary Differential Equations (Neural ODEs). However, for
accurate and meaningful predictions, it is crucial that the models follow the
underlying rules or laws that govern these systems. In this work, we propose a
self-adaptive penalty algorithm for Neural ODEs to enable modelling of
constrained natural systems. The proposed self-adaptive penalty function can
dynamically adjust the penalty parameters. The explicit introduction of prior
knowledge helps to increase the interpretability of Neural ODE -based models.
We validate the proposed approach by modelling three natural systems with prior
knowledge constraints: population growth, chemical reaction evolution, and
damped harmonic oscillator motion. The numerical experiments and a comparison
with other penalty Neural ODE approaches and \emph{vanilla} Neural ODE,
demonstrate the effectiveness of the proposed self-adaptive penalty algorithm
for Neural ODEs in modelling constrained natural systems. Moreover, the
self-adaptive penalty approach provides more accurate and robust models with
reliable and meaningful predictions
The fracturation influence on the exploitation of ornamental rocks: the case of the Pedras Salgadas granite (Vila Real, North of Portugal)
[Abstract] The exploitation of ornamental granite in Pedras Salgadas region is limited by the regional fault pattern, which is formed by three sets of principal faults. Based upon the joint spacings measurements, the medium was computed for each quarry and for the massif. The medium exploitaion yield of the quarries was also estimated
Linfangioleiomiomatose pulmonar inicial provável e linfangioleiomioma mediastinal
A 68 year old woman was submitted to a mediastinal lymphangioleiomyoma resection found in a follow-up study of lower left lung resection due to bronchiectasis complicated by chylothorax. This led to a revaluation of the pulmonary specimen that revealed, in addition to inflammatory bronchiectasis, small spindle cell nodules in the lung parenchyma, similar to minute pulmonary meningothelial-like nodules, but with smooth muscle actin immunohistochemical positivity. The possibility of initial pulmonary development of lymphangioleiomyomatosis is discussed
Water use efficiency in bananas pome type cropsusing empirical coefficient based on leaf area.
The aim of this work was to evaluate the yield and water use efficiency (WUE) of banana ?Prata-Anã? (AAB) and ?BRS Platina? (AAAB) during two cycles of production in a semi-arid climate of Brazil (classified as Aw according Köppen)
The role of Dark Matter interaction in galaxy clusters
We consider a toy model to analyze the consequences of dark matter
interaction with a dark energy background on the overall rotation of galaxy
clusters and the misalignment between their dark matter and baryon
distributions when compared to {\Lambda}CDM predictions. The interaction
parameters are found via a genetic algorithm search. The results obtained
suggest that interaction is a basic phenomenon whose effects are detectable
even in simple models of galactic dynamics.Comment: RevTeX 4.1, 5 pages, 3 figure
Magnetic reconfiguration of MnAs/GaAs(001) observed by Magnetic Force Microscopy and Resonant Soft X-ray Scattering
We investigated the thermal evolution of the magnetic properties of MnAs
epitaxial films grown on GaAs(001) during the coexistence of
hexagonal/orthorhombic phases using polarized resonant (magnetic) soft X-ray
scattering and magnetic force microscopy. The results of the diffuse satellite
X-ray peaks were compared to those obtained by magnetic force microscopy and
suggest a reorientation of ferromagnetic terraces as temperature rises. By
measuring hysteresis loops at these peaks we show that this reorientation is
common to all ferromagnetic terraces. The reorientation is explained by a
simple model based on the shape anisotropy energy. Demagnetizing factors were
calculated for different configurations suggested by the magnetic images. We
noted that the magnetic moments flip from an in-plane mono-domain orientation
at lower temperatures to a three-domain out-of-plane configuration at higher
temperatures. The transition was observed when the ferromagnetic stripe width L
is equal to 2.9 times the film thickness d. This is in good agreement with the
expected theoretical value of L = 2.6d.Comment: 16 pages in PD
Metabolic engineering of fatty acids from soybean seeds.
Edição do Congress of the Brazilian Biotechnology Society, Florianópolis, 2013
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