7,873 research outputs found
The linear and nonlinear Jaynes-Cummings model for the multiphoton transition
With the Jaynes-Cummings model, we have studied the atom and light field
quantum entanglement of multiphoton transition, and researched the effect of
initial state superposition coefficient , the transition photon number
, the quantum discord and the nonlinear coefficient on the
quantum entanglement degrees. We have given the quantum entanglement degrees
curves with time evolution, and obtained some results, which should have been
used in quantum computing and quantum information.Comment: arXiv admin note: text overlap with arXiv:1404.0821, arXiv:1205.0979
by other author
Dynamic Cytoophidia during Late-Stage Drosophila Oogenesis
CTP synthase (CTPS) catalyzes the final step of de novo synthesis of CTP. CTPS was first discovered to form filamentous structures termed cytoophidia in Drosophila ovarian cells. Subsequent studies have shown that cytoophidia are widely present in cells of three life domains. In the Drosophila ovary model, our previous studies mainly focused on the early and middle stages, with less involvement in the later stages. In this work, we focus on the later stages of female germline cells in Drosophila. We use live-cell imaging to capture the continuous dynamics of cytoophidia in Stages 10–12. We notice the heterogeneity of cytoophidia in the two types of germline cells (nurse cells and oocytes), manifested in significant differences in morphology, distribution, and dynamics. Surprisingly, we also find that neighboring nurse cells in the same egg chamber exhibit multiple dynamic patterns of cytoophidia over time. Although the described dynamics may be influenced by the in vitro incubation conditions, our observation provides an initial understanding of the dynamics of cytoophidia during late-stage Drosophila oogenesis
Improving Anomaly Segmentation with Multi-Granularity Cross-Domain Alignment
Anomaly segmentation plays a crucial role in identifying anomalous objects
within images, which facilitates the detection of road anomalies for autonomous
driving. Although existing methods have shown impressive results in anomaly
segmentation using synthetic training data, the domain discrepancies between
synthetic training data and real test data are often neglected. To address this
issue, the Multi-Granularity Cross-Domain Alignment (MGCDA) framework is
proposed for anomaly segmentation in complex driving environments. It uniquely
combines a new Multi-source Domain Adversarial Training (MDAT) module and a
novel Cross-domain Anomaly-aware Contrastive Learning (CACL) method to boost
the generality of the model, seamlessly integrating multi-domain data at both
scene and sample levels. Multi-source domain adversarial loss and a dynamic
label smoothing strategy are integrated into the MDAT module to facilitate the
acquisition of domain-invariant features at the scene level, through
adversarial training across multiple stages. CACL aligns sample-level
representations with contrastive loss on cross-domain data, which utilizes an
anomaly-aware sampling strategy to efficiently sample hard samples and anchors.
The proposed framework has decent properties of parameter-free during the
inference stage and is compatible with other anomaly segmentation networks.
Experimental conducted on Fishyscapes and RoadAnomaly datasets demonstrate that
the proposed framework achieves state-of-the-art performance.Comment: Accepted to ACM Multimedia 202
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