64 research outputs found
Component attention network for multimodal dance improvisation recognition
Dance improvisation is an active research topic in the arts. Motion analysis
of improvised dance can be challenging due to its unique dynamics. Data-driven
dance motion analysis, including recognition and generation, is often limited
to skeletal data. However, data of other modalities, such as audio, can be
recorded and benefit downstream tasks. This paper explores the application and
performance of multimodal fusion methods for human motion recognition in the
context of dance improvisation. We propose an attention-based model, component
attention network (CANet), for multimodal fusion on three levels: 1) feature
fusion with CANet, 2) model fusion with CANet and graph convolutional network
(GCN), and 3) late fusion with a voting strategy. We conduct thorough
experiments to analyze the impact of each modality in different fusion methods
and distinguish critical temporal or component features. We show that our
proposed model outperforms the two baseline methods, demonstrating its
potential for analyzing improvisation in dance.Comment: Accepted to 25th ACM International Conference on Multimodal
Interaction (ICMI 2023
Advance in mechanism of plant leaf colour mutation
As a common mutation trait in plants, leaf colour mutation is related to the degree of chlorophyll and anthocyanin changes and the destruction of chloroplast structure. This study summarizes the latest research progress in leaf colour mutation mechanism, including the metabolic basis of plant leaf colour mutation, leaf colour mutation caused by gene mutation in the chlorophyll metabolism pathway, leaf colour mutation caused by blocked chloroplast development, leaf colour mutation controlled by key transcription factors and non-coding RNAs, leaf colour mutation caused by environmental factors, and leaf colour mutation due to the involvement of the mevalonate pathway. These results will lay a theoretical foundation for leaf colour development, leaf colour improvement, and molecular breeding for leaf colour among tree species
OmniObject3D: Large-Vocabulary 3D Object Dataset for Realistic Perception, Reconstruction and Generation
Recent advances in modeling 3D objects mostly rely on synthetic datasets due
to the lack of large-scale realscanned 3D databases. To facilitate the
development of 3D perception, reconstruction, and generation in the real world,
we propose OmniObject3D, a large vocabulary 3D object dataset with massive
high-quality real-scanned 3D objects. OmniObject3D has several appealing
properties: 1) Large Vocabulary: It comprises 6,000 scanned objects in 190
daily categories, sharing common classes with popular 2D datasets (e.g.,
ImageNet and LVIS), benefiting the pursuit of generalizable 3D representations.
2) Rich Annotations: Each 3D object is captured with both 2D and 3D sensors,
providing textured meshes, point clouds, multiview rendered images, and
multiple real-captured videos. 3) Realistic Scans: The professional scanners
support highquality object scans with precise shapes and realistic appearances.
With the vast exploration space offered by OmniObject3D, we carefully set up
four evaluation tracks: a) robust 3D perception, b) novel-view synthesis, c)
neural surface reconstruction, and d) 3D object generation. Extensive studies
are performed on these four benchmarks, revealing new observations, challenges,
and opportunities for future research in realistic 3D vision.Comment: Project page: https://omniobject3d.github.io
Strain-induced enhancement of in infinite-layer PrSrNiO films
The mechanism of unconventional superconductivity in correlated materials
remains a great challenge in condensed matter physics. The recent discovery of
superconductivity in infinite-layer nickelates, as analog to high-Tc cuprates,
has opened a new route to tackle this challenge. By growing 8 nm Pr0.8Sr0.2NiO2
films on the (LaAlO3)0.3(Sr2AlTaO6)0.7 substrate, we successfully raise the
transition temperature Tc from 9 K in the widely studied SrTiO3-substrated
nickelates into 15 K. By combining x-ray absorption spectroscopy with the
first-principles and many-body simulations, we find a positive correlation
between Tc and the pre-edge peak intensity, which can be attributed to the
hybridization between Ni and O orbitals induced by the strain. Our result
suggests that structural engineering can further enhance unconventional
superconductivity, and the charge-transfer property plays a crucial role in the
pairing strength.Comment: 8 pages, 4 figure
Unraveling the Regulatory Mechanism of Color Diversity in Camellia japonica Petals by Integrative Transcriptome and Metabolome Analysis
Camellia japonica petals are colorful, rich in anthocyanins, and possess important ornamental, edible, and medicinal value. However, the regulatory mechanism of anthocyanin accumulation in C. japonica is still unclear. In this study, an integrative analysis of the metabolome and transcriptome was conducted in five C. japonica cultivars with different petal colors. Overall, a total of 187 flavonoids were identified (including 25 anthocyanins), and 11 anthocyanins were markedly differentially accumulated among these petals, contributing to the different petal colors in C. japonica. Moreover, cyanidin-3-O-(6″-O-malonyl) glucoside was confirmed as the main contributor to the red petal phenotype, while cyanidin-3-O-rutinoside, peonidin-3-O-glucoside, cyanidin-3-O-glucoside, and pelargonidin-3-O-glucoside were responsible for the deep coloration of the C. japonica petals. Furthermore, a total of 12,531 differentially expressed genes (DEGs) and overlapping DEGs (634 DEGs) were identified by RNA sequencing, and the correlation between the expression level of the DEGs and the anthocyanin content was explored. The candidate genes regulating anthocyanin accumulation in the C. japonica petals were identified and included 37 structural genes (especially CjANS and Cj4CL), 18 keys differentially expressed transcription factors (such as GATA, MYB, bHLH, WRKY, and NAC), and 16 other regulators (mainly including transporter proteins, zinc-finger proteins, and others). Our results provide new insights for elucidating the function of anthocyanins in C. japonica petal color expression
Down-regulation of GRP78 is associated with the sensitivity of chemotherapy to VP-16 in small cell lung cancer NCI-H446 cells
<p>Abstract</p> <p>Background</p> <p>Chemotherapy resistance remains a major obstacle for the treatment of small cell lung cancer (SCLC). Glucose-regulated protein 78 (GRP78), an endoplasmic reticulum chaperone, plays a critical role in chemotherapy resistance in some cancers. However, whether the suppression of the chaperone can enhance the sensitivity of chemotherapy in SCLC is still unclear.</p> <p>Methods</p> <p>The SCLC NCI-H446 cells were divided into three groups: BAPTA-AM→A23187-treated group, A23187-treated group and control-group. Immunofluorescence, western blot and RT-PCR were used to assess the expression of GRP78 at both protein and mRNA levels. Cell apoptosis and the cell cycle distributions of the cells were analyzed by flow cytometry in order to evaluate the therapeutic sensitivity to VP-16.</p> <p>Results</p> <p>The expression of GRP78 at both protein and mRNA levels in the BAPTA-AM→A23187-treated cells dramatically decreased as compared to that in both A23187-treated and control groups. After treatment by VP-16, the percentage of apoptotic cells in BAPTA-AM→A23187-treated cells were: 33.4 ± 1.01%, 48.2 ± 1.77%, 53.0 ± 1.43%, 56.5 ± 2.13%, respectively, corresponding to the concentrations of BAPTA-AM 10, 15, 25, 40 μM, which was statistically significant high in comparison with the A23187-treated group and untreated-group (7.18 ± 1.03% and 27.8 ± 1.45%, respectively, p < 0.05). The results from analysis of cell cycle distribution showed that there was a significantly decreased in G<sub>1 </sub>phase and a dramatically increased in S phase for the BAPTA-AM→A23187-treated cells as compared with the untreated cells.</p> <p>Conclusion</p> <p>BAPTA-AM is a strong inhibitor of GRP78 in the NCI-H446 cell line, the down-regulation of GRP78 can significantly increase the sensitivity to VP-16. The suppression of GRP78 may offer a new surrogated therapeutic approach to the clinical management of lung cancer.</p
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