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LMR-CBT: learning modality-fused representations with CB-Transformer for multimodal emotion recognition from unaligned multimodal sequences

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Frontiers of Computer Science 2024年第4期18卷 39-47页

作者： Ziwang FU Feng liu Qing XU Xiangling FU Jiayin QI school of Computer Science(National Pilot Software Engineering school) Beijing University of Posts and TelecommunicationsBeijing 100876China Key Laboratory of Trustworthy Distributed Computing and Service(BUPT) Beijing 100876China Shanghai International school of Chief Technology Officer East China Normal UniversityShanghai 200062China school of Computer Science and Technology East China Normal UniversityShanghai 200062China school of Cyberspace Security Guangzhou UniversityGuangdong 510006China

Learning modality-fused representations and processing unaligned multimodal sequences are meaningful and challenging in multimodal emotion *** approaches use directional pairwise attention or a message hub to fuse language,visual,and audio ***,these fusion methods are often quadratic in complexity with respect to the modal sequence length,bring redundant information and are not *** this paper,we propose an efficient neural network to learn modality-fused representations with CB-Transformer(LMR-CBT)for multimodal emotion recognition from unaligned multi-modal ***,we first perform feature extraction for the three modalities respectively to obtain the local structure of the ***,we design an innovative asymmetric transformer with cross-modal blocks(CB-Transformer)that enables complementary learning of different modalities,mainly divided into local temporal learning,cross-modal feature fusion and global self-attention *** addition,we splice the fused features with the original features to classify the emotions of the ***,we conduct word-aligned and unaligned experiments on three challenging datasets,IEMOCAP,CMU-MOSI,and *** experimental results show the superiority and efficiency of our proposed method in both *** with the mainstream methods,our approach reaches the state-of-the-art with a minimum number of parameters.

关键词： modality-fused representations cross-model blocks multimodal emotion recognition unaligned multimodal sequences computational affection

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Selective photosynthesis of Z-olefins through crystalline metal-organic cage-initiated expeditious cascade reactions

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Carbon Energy 2024年第3期6卷 118-131页

作者： Jia-Ni Lu Yunze Huang Yuan-Sheng Xia Long-Zhang Dong Lei Zhang Jing-Jing liu Lan-Gui Xie Jiang liu Ya-Qian Lan Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials ScienceJiangsu Collaborative Innovation Centre of Biomedical Functional MaterialsNanjing Normal UniversityNanjingChina school of Chemistry South China Normal UniversityGuangzhouChina

The semi-hydrogenation of alkyne to form Z-olefins with high conversion and high selectivity is still a huge challenge in the chemical ***,flammable and explosive hydrogen as the common hydrogen source of this reaction increases the cost and danger of industrial ***,we connect the photocatalytic hydrogen evolution reaction and the semihydrogenation reaction of alkynes in series and successfully realize the high selective production of Z-alkenes using low-cost,safe,and green water as the proton *** the cascade reaction,a series of isomorphic metal–organic cage catalysts(Co_(x)Zn_(8−x)L_(6),x=0,3,4,5,and 8)are designed and synthesized to improve the yield of the photocatalytic hydrogen *** them,Co_(5)Zn_(3)L_(6) shows the highest photocatalytic activity,with a H_(2. generation rate of 8.81 mmol g^(−1) h^(−1).Then,Co_(5)Zn_(3)L_(6) is further applied in the above tandem reaction to efficiently reduce alkynes to Z-alkenes under ambient conditions,which can reach high conversion of>98%and high selectivity of>99%,and maintain original catalytic activity after multiple ***“one-pot”tandem reaction can achieve a highly selective and safe stepwise conversion from water into hydrogen into Z-olefins under mild reaction conditions.

关键词： alkyne semi-hydrogenation hydrogen evolution reaction metal-organic cages photocatalysis Z-olefins

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PRECISE VALUES OF THE BLOCH CONSTANTS OF CERTAIN LOG-p-HARMONIC MAPPINGS

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Acta Mathematica Scientia 2021年第1期41卷 297-310页

作者： mingsheng liu Lifang LUO school of mathematical {2. South China Normal UniversityGuangzhou 510631China

The aim of this article is *** aim is to establish the precise forms of Landau-Bloch type theorems for certain polyharmonic mappings in the unit disk by applying a geometric *** other is to obtain the precise values of Bloch constants for certain log-p-harmonic *** results improve upon the corresponding results given in Bai et al.(Complex ***,13(2.:32.-340,2.19).

关键词： Bloch constant Landau theorem Bloch theorem biharmonic mappings polyharmonic mappings log-p-harmonic mappings univalent

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RETINOBLASTOMA RELATED 1 switches mitosis to meiosis in rice

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Plant Communications 2024年第6期5卷 193-212页

作者： Yongjie Miao Hanli You Huixin liu Yangzi Zhao Jiangzhe Zhao Yafei Li Yi Shen Ding Tang Baohui liu Kewei Zhang Zhukuan Cheng Guangdong Provincial Key Laboratory of Plant Adaptation and Molecular Design Innovative Center of Molecular Genetics and EvolutionSchool of Life SciencesGuangzhou UniversityGuangzhou 510006China Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding/Zhongshan Biological Breeding Laboratory/Key Laboratory of Plant Functional Genomics of the Ministry of Education Agricultural College of Yangzhou UniversityYangzhou 225009China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyInnovation Academy for Seed DesignChinese Academy of SciencesBeijing 100101China Zhejiang Provincial Key Laboratory of Biotechnology on Specialty Economic Plants Department of BiologyCollege of Life SciencesZhejiang Normal UniversityJinhua 321004China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Jiangsu Key Laboratory of Crop Genetics and Physiology Yangzhou UniversityYangzhou 225009China

The transition from mitosis to meiosis is a critical event in the reproductive development of all sexually reproducing ***,the mechanisms that regulate this process in plants remain largely ***,we find that the rice(Oryza sativa L.)protein RETINOBLASTOMA RELATED 1(RBR1)is essential to the transition from mitosis to *** of RBR1 function results in hyper-proliferative sporogenous-celllike cells(SCLs)in the anther locules during early stages of reproductive *** hyperproliferative SCLs are unable to initiate meiosis,eventually stagnating and degrading at late developmental stages to form pollen-free *** results suggest that RBR1 acts as a gatekeeper of entry into ***,cytokinin content is significantly increased in rbr1 mutants,whereas the expression of type-B response factors,particularly LEPTO1,is significantly *** the known close association of cytokinins with cell proliferation,these findings imply that hyper-proliferative germ cells in the anther locules may be attributed to elevated cytokinin concentrations and disruptions in the cytokinin *** a genetic strategy,the association between germ cell hyper-proliferation and disturbed cytokinin signaling in rbr1 has been *** summary,we reveal a unique role of RBR1 in the initiation of meiosis;our results clearly demonstrate that the RBR1 regulatory module is connected to the cytokinin signaling pathway and switches mitosis to meiosis in rice.

关键词： RETINOBLASTOMA RELATED1 meiosis initiation cytokinin rice

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Berberine Enhances Intestinal Mucosal Barrier Function by Promoting Vitamin D Receptor Activity

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Chinese Journal of Integrative Medicine 2024年第2期30卷 143-151页

作者： HUANG Yong-quan liu Jia-lin CHEN Geng-xin SHEN Dan-ting ZHU Wang CHEN Xin-lin liu Feng-bin HOU Qiu-ke Graduate school Guangzhou University of Chinese MedicineGuangzhou(510405)China Department of Orthopedics the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Preventive Medicine and Health Statistics Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Gastroenterology the First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510405)China

Objective:To evaluate if berberine can act on vitamin D receptors(VDR)and thereby regulate the expression of tight junction proteins(TJPs)in irritable bowel syndrome-diarrhea-predominant(IBS-D)***:The newborn rats were induced into IBS-D rat model via neonatal maternal separation combined with acetic acid chemical *** modeling,the model was evaluated and rats were divided into the control group and berberine treatment groups(0.85,1.7 and 3.4 mg/kg,once a day for 2.weeks).The distal colon was obtained and colonic epithelial cells(CECs)were isolated and cultured after IBS-D model *** vitamin D receptor response element(VDRE)reporter gene was determined in the CECs of IBS-D rats to analyze the effect of berberine on the VDRE *** overexpression or silencing technology was used to analyze whether VDR plays a role in promoting intestinal barrier repair,and to determine which region of VDR plays a role in berberine-regulated intestinal ***:The IBS-D rat model was successfully constructed and the symptoms were improved by berberine in a dose-dependent manner(Pnormal control and basic plasmid groups(all P<0.05).RT-qPCR and Western blot results showed that compared with the blank group,expressions of occludin and zonula occludens-1 were significantly higher in VDR containing groups(all P<0.05).Berberine plus pCMV-Myc-VDR-N group exerted the highest expression levels of occludin and zonula occludens-1(P<0.05).Conclusion:Berberine enhances intestinal mucosal barrier function of IBS-D rats by promoting VDR activity,and the main site of action is the N-terminal region of VDR.

关键词： berberine Chinese medicine irritable bowel syndrome-diarrhea-predominant vitamin D receptors intestinal mucosal barrier tight junction proteins

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Deep Broad Learning for Emotion Classification in Textual Conversations

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Tsinghua Science and Technology 2024年第2期29卷 481-491页

作者： Sancheng Peng Rong Zeng Hongzhan liu Lihong Cao Guojun Wang Jianguo Xie Center for Linguistics and Applied Linguistics and Laboratory of Language Engineering and ComputingGuangdong University of Foreign StudiesGuangzhou 510006China Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices South China Normal UniversityGuangzhou 510006China school of Computer Science and Cyber Engineering Guangzhou UniversityGuangzhou 510006China Modern Education Technology Center Guangdong University of Foreign StudiesGuangzhou 510006China

Emotion classification in textual conversations focuses on classifying the emotion of each utterance from textual *** is becoming one of the most important tasks for natural language processing in recent ***,it is a challenging task for machines to conduct emotion classification in textual conversations because emotions rely heavily on textual *** address the challenge,we propose a method to classify emotion in textual conversations,by integrating the advantages of deep learning and broad learning,namely *** aims to provide a more effective solution to capture local contextual information(i.e.,utterance-level)in an utterance,as well as global contextual information(i.e.,speaker-level)in a conversation,based on Convolutional Neural Network(CNN),Bidirectional Long Short-Term Memory(Bi-LSTM),and broad *** experiments have been conducted on three public textual conversation datasets,which show that the context in both utterance-level and speaker-level is consistently beneficial to the performance of emotion *** addition,the results show that our proposed method outperforms the baseline methods on most of the testing datasets in weighted-average F1.

关键词： emotion classification textual conversation Convolutional Neural Network(CNN) Bidirectional Long Short-Term Memory(Bi-LSTM) broad learning

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Modelling and simulation study on dynamic pollution accumulation process of composite insulator

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High Voltage 2024年第3期9卷 601-613页

作者： Zhongyi Yang Dongxiong liu Xiangjun Zeng Caijin Fan Xin Yang Yafei Huang school of Electrical and Information Engineering Changsha University of Science and TechnologyChangshaChina State Key Laboratory of HVDC Electric Power Research InstituteCSGGuangzhouChina

With the widespread application of composite insulators in transmission lines,exploring the accumulation mechanism of pollution particles on composite insulator surfaces is of importance to ensure the safe and steady operation of the power *** the current theoretical shortcomings,this study categorises the accumulation process of particles on the insulator surface into three stages,namely‘spatial motion’,‘surface collision’,and‘surface motion’.The motion and rotation velocities in a multi-physics field are calculated in the spatial motion *** the surface collision stage,a parameter called‘neck height’is introduced to determine the optimum mechanics theory,and the normal deposition criterion is *** the surface motion stage,the sliding displacement and rolling displacement on the surface are calculated based on the rotation speed of the particles.A dynamic pollution accumulation model of the composite insulator is estab-lished based on the normal deposition criterion and tangential ***,numerical simulations are performed by using the finite element *** results show that the proposed model agrees with the actual insulator pollution accu-mulation,and the deposition model is still applicable for various types of composite insulators operating in different applied *** deposition probability of particles increases with the increasing particle *** the surface motion stage,particle displacement increases with particle size and wind velocity.

关键词： composite displacement dynamic

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中国西部亚高山针叶林资源查询系统

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山地学报 2004年第2期22卷 248-253页

作者：宋孟强阳小成刘庆中国科学院水利部成都山地灾害与环境研究所华南师范大学生命科学学院中国科学院成都生物研究所四川成都 610041 广东广州 510631

在搜集了中国西部亚高山针叶林主要分布区的行政区划信息及各针叶树种的分布信息的基础上,利用流行桌面GIS软件ArcView V3.2.Avenue开发出中国西部亚高山针叶林资源查询系统,该系统既可以查询任意一个属或种的分布情况,又可以查询多个... 详细信息

在搜集了中国西部亚高山针叶林主要分布区的行政区划信息及各针叶树种的分布信息的基础上,利用流行桌面GIS软件ArcView V3.2.Avenue开发出中国西部亚高山针叶林资源查询系统,该系统既可以查询任意一个属或种的分布情况,又可以查询多个属、种(同属的和不同属)的交叉分布情况,并且查询结果可以立即反映到电子地图上,图例也能立即更新。并且在查询单一种的分布情况时,还可以查询其相关图像、文本、视频等信息,大大丰富了种的查询内容。同时,该系统也可查询任意一个或多个省级行政区或县级行政区的属种分布及其组合情况,从而使得行政区和亚高山针叶林属、种的双向查询变得非常简单。另外,本系统具有很强的可扩展性,可以轻松实现亚高山针叶树种、行政区及图像、文本、视频的扩充,并且扩充的内容可以立即使用,达到随时扩充、随时使用的目的。

关键词：亚高山针叶林 GIS 查询交叉分布 ArcView

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REFINEMENTS OF THE NORM OF TWO ORTHOGONAL PROJECTIONS

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Acta Mathematica Scientia 2024年第4期44卷 1229-1243页

作者： Xiaohui LI Meiqi liu Chunyuan DENG school of Mathematics Science South China Normal UniversityGuangzhou 510631China

In this paper,some refinements of norm equalities and inequalities of combination of two orthogonal projections are *** use certain norm inequalities for positive contraction operator to establish norm inequalities for combination of orthogonal projections on a Hilbert ***,we give necessary and sufficient conditions under which the norm of the above combination of o`rthogonal projections attains its optimal value.

关键词： norm orthogonal projection positive operator spectral block operator valued matrix

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The appearance of cytoplasmic cytochrome C precedes apoptosis during Drosophila salivary gland degradation

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Insect Science 2024年第1期31卷 157-172页

作者： Shihui Long Wenxin Cao Yongyu Qiu Ruohan Deng Jiali liu Lidan Zhang Renke Dong Fengxin liu Sheng Li Haigang Zhao Na Li Kang Li Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhouChina Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhouChina Guangmeiyuan R&D Center Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied TechnologySouth China Normal UniversityMeizhouGuangdong ProvinceChina school of Food Science and Engineering South China University of TechnologyGuangzhouChina ChemPartner PharmaTech Co. LtdJiangmenGuangdong ProvinceChina

Apoptosis is an important process for organism development that functions to eliminate cell damage,maintain homeostasis,and remove obsolete tissues during *** mammals,apoptosis is accompanied by the release of cytochrome C(Cyt-c)from mitochondria to the ***,whether this process is conserved in the fruit fly,Drosophila melanogaster,remains *** this study,we discovered that during the degradation of Drosophila salivary gland,the transcription of mitochondria apoptosis factors(MAPFs),Cyt-c,and death-associated APAF1-related killer(Dark)encoding genes are all upregulated antecedent to initiator and effector caspases encoding *** proteins Cyt-c and the active caspase 3 appear gradually in the cytoplasm during salivary gland ***,the Cyt-c protein colocates with mito-GFP,the marker indicating cytoplasmic mitochondria,and the change in mitochondrial membrane potential coincides with the appearance of Cyt-c in the ***,impeding or promoting 2.E-induced transcription factor E93 suppresses or enhances the staining of Cyt-c and the active caspase 3 in the cytoplasm of salivary gland,and accordingly decreases or increases the mitochondrial membrane potential,*** research provides evidence that cytoplasmic Cyt-c appears before apoptosis during Drosophila salivary gland degradation,shedding light on partial conserved mechanism in apoptosis between insects and mammals.

关键词： active caspase 3 apoptosis Cyt-c Drosophila salivary gland

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