234 research outputs found
Development and Control of Soybean Aphid, Aphis glycines, in Heilongjiang Province
Originating text in Chinese.Citation: Wang, Chunrong, Chen, Jiguang, Guo, Yuren, Gong, Xiangyu, Xu, Zhaofei, Lin, Chao. (1998). Development and Control of Soybean Aphid, Aphis glycines, in Heilongjiang Province. Soybean Bulletin, 6, 15
GAIA: Delving into Gradient-based Attribution Abnormality for Out-of-distribution Detection
Detecting out-of-distribution (OOD) examples is crucial to guarantee the
reliability and safety of deep neural networks in real-world settings. In this
paper, we offer an innovative perspective on quantifying the disparities
between in-distribution (ID) and OOD data -- analyzing the uncertainty that
arises when models attempt to explain their predictive decisions. This
perspective is motivated by our observation that gradient-based attribution
methods encounter challenges in assigning feature importance to OOD data,
thereby yielding divergent explanation patterns. Consequently, we investigate
how attribution gradients lead to uncertain explanation outcomes and introduce
two forms of abnormalities for OOD detection: the zero-deflation abnormality
and the channel-wise average abnormality. We then propose GAIA, a simple and
effective approach that incorporates Gradient Abnormality Inspection and
Aggregation. The effectiveness of GAIA is validated on both commonly utilized
(CIFAR) and large-scale (ImageNet-1k) benchmarks. Specifically, GAIA reduces
the average FPR95 by 23.10% on CIFAR10 and by 45.41% on CIFAR100 compared to
advanced post-hoc methods.Comment: Accepted by NeurIPS202
An HDG Method for Distributed Control of Convection Diffusion PDEs
We propose a hybridizable discontinuous Galerkin (HDG) method to approximate
the solution of a distributed optimal control problem governed by an elliptic
convection diffusion PDE. We derive optimal a priori error estimates for the
state, adjoint state, their fluxes, and the optimal control. We present 2D and
3D numerical experiments to illustrate our theoretical results.Comment: arXiv admin note: substantial text overlap with arXiv:1712.10106,
arXiv:1712.01403, arXiv:1712.0293
Vitexin attenuates smoke inhalation induced acute lung injury in rats by inhibiting oxidative stress via PKC β/p66Shc signaling pathway
Purpose: To investigate the protective effect of vitexin on smoke inhalation-induced acute lung injury (SI-ALI), and the underlying mechanism of action.Methods: The ALI rat model was established by inhalation of smoke in a closed smoke chamber. Survival rate, arterial blood gas analysis, wet-to-dry weight ratio of lung tissues, bronchoalveolar lavage fluid protein concentration, lung tissue histology, and oxidative stress and inflammation level were evaluated. Expressions of protein kinase C β (PKC β), p66Shc, and phosphorylated p66Shc were determined by western blot or quantitative reverse transcription-polymerase chain reaction.Results: Compared with smoke inhalation group, vitexin alleviated the decline in arterial partial pressure of oxygen (p < 0.05), reduced lung tissue exudation and pathological lung tissue damage, inhibited the expression of PKC β/p66Shc signaling pathway proteins, downregulated the level of oxidative stress and inflammation, and ultimately improved the survival rate in SI-ALI rats (p < 0.05).Conclusion: Vitexin attenuates SI-ALI in rats by alleviating oxidative stress via inhibition of PKC β/p66Shc signaling pathway. Thus, this compound is a potential agent for the treatment of SI-ALI
Mean Field Game-based Waveform Precoding Design for Mobile Crowd Integrated Sensing, Communication, and Computation Systems
Data collection and processing timely is crucial for mobile crowd integrated
sensing, communication, and computation~(ISCC) systems with various
applications such as smart home and connected cars, which requires numerous
integrated sensing and communication~(ISAC) devices to sense the targets and
offload the data to the base station~(BS) for further processing. However, as
the number of ISAC devices growing, there exists intensive interactions among
ISAC devices in the processes of data collection and processing since they
share the common network resources. In this paper, we consider the environment
sensing problem in the large-scale mobile crowd ISCC systems and propose an
efficient waveform precoding design algorithm based on the mean field
game~(MFG). Specifically, to handle the complex interactions among large-scale
ISAC devices, we first utilize the MFG method to transform the influence from
other ISAC devices into the mean field term and derive the
Fokker-Planck-Kolmogorov equation, which model the evolution of the system
state. Then, we derive the cost function based on the mean field term and
reformulate the waveform precoding design problem. Next, we utilize the G-prox
primal-dual hybrid gradient algorithm to solve the reformulated problem and
analyze the computational complexity of the proposed algorithm. Finally,
simulation results demonstrate that the proposed algorithm can solve the
interactions among large-scale ISAC devices effectively in the ISCC process. In
addition, compared with other baselines, the proposed waveform precoding design
algorithm has advantages in improving communication performance and reducing
cost function.Comment: 13 pages,9 figure
Precision Measurement of M1 Optical Clock Transition in Ni12+
Highly charged ions (HCIs) have drawn significant interest in quantum
metrology and in search for new physics. Among these, Ni12+ is considered as
one of the most promising candidates for the next generation of HCI optical
clocks, due to its two E1-forbidden transitions M1 and E2, which occur in the
visible spectral range. In this work, we used the Shanghai-Wuhan Electron Beam
Ion Trap to perform a high-precision measurement of the M1 transition
wavelength. Our approach involved an improved calibration scheme for the
spectra, utilizing auxiliary Ar+ lines for calibration and correction. Our
final measured result of the M1 transition wavelength demonstrates a five-fold
improvement in accuracy compared to our previous findings, reaching the
sub-picometer level accuracy. In combination with our rigorous atomic-structure
calculations to capture the electron correlations and relativistic effects, the
quantum electrodynamic (QED) corrections were extracted. Moreover, comparing
with an estimate of the one-electron QED contributions by using the GRASP2018
package, we found that the present experimental accuracy is high enough for
testing the higher-order QED corrections for such a complex system with four
electrons in the p subshell.Comment: 15 pages, 5 figure
Optimal Online Service Strategy and Price Decision in Omnichannel Retail
As a new emerging sales promotion tool, various types of online services are increasingly adopted by firms to improve consumers' satisfaction and then increase profit. This paper simulates a two-echelon supply chain where a supplier sells the product through an offline or online retailer. Online channel is characterised by direct selling and reselling. We consider three online service strategies: no online service, pre-emptive and reactive online service. Several results are obtained. We find that investing in online services can benefit all players in most scenarios more than no service scenario. In the direct selling case, the offline retailer benefits the most from the reactive service strategy due to the webrooming effect, whereas the supplier performance best in the pre-emptive service strategy. However, in the reselling case, we find that the supplier, the online and offline retailers benefit the most from reactive service strategy. Furthermore, we compare the prices and service levels of the three strategies and find that the webrooming effect coefficient can affect the optimal wholesale price, retail prices and online service level. Finally, the findings indicate that the supplier's choice of the two cases depends on the fixed cost of the online channel
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