检索结果-内蒙古大学图书馆

AC2Net: Hybrid attention convolution and compression fusion network for multimodal emotion recognition

Digital Signal Processing: A Review Journal 2025年 164卷

作者： Xie, Lixun Sun, Weiqing Zhang, Jingyi Zhao, Xiaohu National and Local Joint Engineering Laboratory of Internet Applied Technology on Mines China University of Mining and Technology Xuzhou221008 China School of Information and Control Engineering China University of Mining and Technology Xuzhou221116 China

The rapid development of human-computer interaction systems can help computers better understand human intentions. How to comprehensively and accurately recognize emotions is a key link in human-computer interaction. However, the current research on multimodal sentiment analysis tends to extract the information of a single modal separately and then simply combine the features of each mode. In this process, there is a lack of effective interaction between the features of each modal extraction, and the close relationship between the multi-modal data and the recognition task is ignored. In addition, the multimodal features are simply added and connected, ignoring the differences in the degree of correlation and contribution of different modal information to the final recognition result. In view of this, this paper proposes the Hybrid Attention Convolution and Compression Fusion Unit for Multimodal Emotion Recognition, namely AC2Net. We have designed a hybrid attention convolution model, which focuses on the interactive extraction of multi-modal features and can accurately capture key emotional perception features among three signal features, namely facial image sequence, EEG, and peripheral physiological signals. A compression fusion unit is designed to aggregate the multi-modal features, and the deep fusion of multi-modal heterogeneous information is realized by compressing and exciting the dense layers in the multi-modal branches. Finally, the proposed model was verified on the DEAP dataset, and the accuracy of valence and arousal dimension two-classification recognition reached 99.39%, 99.37%, and four-classification recognition accuracy reached 99.08%. Compared with the existing single-mode and multi-mode emotion recognition methods, the performance of this model is excellent. © 2025 Elsevier Inc.

关键词： Taxonomies

来源：评论

学校读者我要写书评

暂无评论

Carboxymethyl-Β-Cyclodextrin Enhanced Persulfate/Fe2+ System for Organic Contaminant Removal in Groundwater: Performance, Influencing Factors, and Mechanisms

SSRN

引用

SSRN 2025年

作者： Yang, Chaoge Huang, Yanli Liu, Fangyuan Zhang, Chunpeng Dong, Jun Li, Junmeng School of Mines China University of Mining & Technology Xuzhou221116 China Key Laboratory of Coal Resources and Green Mining in Xinjiang Ministry of Education Xinjiang Institute of Engineering Urumqi830000 China Changchun130021 China National and Local Joint Engineering Laboratory for Petrochemical Contaminated Site Control and Remediation Technology Jilin University 2519 Jiefang Road Changchun130021 China

The removal of contaminants by persulfate (PDS)/Fe2+ system is a promising groundwater decontamination technology, while the non-recyclability of Fe2+ and the restricted mass transfer of contaminants in water limit the decontamination efficiency. Here, we developed carboxymethyl-β-cyclodextrin (CM-β-CD) to chelate Fe2+ coupled with enhancing the solubization of contaminants in groundwater for efficient decontamination. Results showed that a 4.60-fold enhancement in the perchloroethylene (PCE) degradation rate following the addition of 1 g/L CM-β-CD to the PDS/Fe2+ system. The ternary complex formed by CM-β-CD, Fe2+ and PCE was confirmed via ultraviolet absorption spectra and nuclear magnetic resonance hydrogen spectrum. Electron paramagnetic resonance, complemented by chemical probe and radical quenching experiments, identified singlet oxygen (1O2), high-valent iron (Fe(IV)), and hydroxyl radicals (•OH) as the dominant reactive species in the PDS/Fe2+/CM-β-CD system, with relative contributions to PCE degradation quantified at 30.37%, 26.15%, and 18.08%, respectively. The system exhibited reduced PCE degradation efficiency under neutral pH conditions and at lower temperatures. Notably, the presence of HA and common inorganic ions (Cl−, SO42−, NO3−, Na+, K+, Ca2+, and Mg2+) showed negligible effects on PCE degradation efficiency. The primary degradation intermediate of PCE in the PDS/Fe2+/CM-β-CD system was identified as dichloromethane, with the degradation pathways predominantly mediated by 1O2, Fe(IV), and •OH, and PCE could undergo dechlorination and mineralization during the degradation. This study developed an environmentally sustainable remediation strategy utilizing CM-β-CD as a dual-functional agent for simultaneous Fe2+ chelation and contaminant solubilization, enabling efficient groundwater decontamination. © 2025, The Authors. All rights reserved.

关键词： Decontamination

来源：评论

学校读者我要写书评

暂无评论

Dynamic model construction and particle size effects analysis of dust movement during coal-cutting operations at mining face

引用

Powder technology 2025年 460卷

作者： Xue, Sheng Zhang, Wei Tu, Qingyi Xing, Fei Xu, Xingxing Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining Anhui University of Science and Technology Huainan232001 China Guizhou Energy Group Corporation Limited Guiyang550000 China School of Safety Science and Engineering Anhui University of Science and Technology Huainan232001 China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan232001 China

To thoroughly investigate the dynamic behavior of dust during coal-cutting operations at the mining face, this study develops a three-dimensional dust motion model based on the generation characteristics of shearer-induced dust. Using representative particle diameters, the model quantitatively analyzes dust movement across three spatial directions: perpendicular to the coal wall, along the airflow, and vertical. Results indicate that, under unconfined conditions, dust migration distances in the perpendicular and vertical directions are positively correlated with particle size, whereas an inverse relationship is observed in the airflow direction. By integrating these directional dynamics, six distinct dust motion patterns are identified, each exhibiting unique migration characteristics. In confined roadway environments, dust particles display synchronized motion durations in all three directions. Further analysis reveals that, during the settling process, migration distance along the airflow remains inversely proportional to particle size, whereas the relationship with migration distance in the perpendicular direction to the coal wall remains uncertain. Moreover, the motion of fine particles can be approximated as a superposition of uniform motions across the three directions. These findings offer a theoretical foundation for dust migration analysis in coal mines and provide critical insights for developing efficient dust control strategies in complex underground environments. © 2025 Elsevier B.V.

关键词： Coal mines

来源：评论

学校读者我要写书评

暂无评论

Erosion processes of lahar travelling on volcanic sediments: Insights from the physical and numerical modeling

引用

Catena 2025年 256.0卷

作者： Qin, Shengwu Lv, Jiangfeng Qiao, Shuangshuang Chen, Junjun Wan, Feng Yao, Jingyu Li, Guangjie Zhang, Lingshuai College of Construction Engineering Jilin University Changchun 130026 China Observation and Research Station of Geological Hazards and Geological Environment in Changbai Mountain Volcano Ministry of Natural Resources Changchun China Jilin Railway Technology College Jilin 132000 China National and Local Joint Engineering Laboratory of Internet Application Technology on Mine China University of Mining and Technology Xuzhou 221116 China

Lahars can significantly increase in scale and damage potential through the erosion of volcanic sediments. However, limited understanding of the erosion processes involved constrains the ability to predict lahar activity trends. We conducted flume experiments and numerical simulations to study the erosion processes of lahars on volcanic sediments from macroscopic and microscopic perspectives. Lahar erodes bed particles through four modes: grain by grain erosion, local integral erosion, upwelling erosion, and headward erosion. The upwelling of pumice notably enhances the erosion intensity of lahars, as demonstrated by both flume experiments and CFD-DEM numerical simulations. We analyzed the micro-motion characteristics of erodible bed particles using CFD-DEM. Compared to debris particles, the movement trajectory of pumice particles is less influenced by the flow velocity. The streamwise velocity of pumice particles generally shows an increasing trend, while their vertical velocity initially increases sharply, corresponding to the upwelling process. Before debris particles leave the erodible bed, their streamwise velocity first increases and then decreases, with their vertical velocity alternating between positive and negative values. The longitudinal erosion processes of the erodible bed can be summarized as follows: pumice upwelling, the formation of erosion pits, the growth of erosion pits, an increase in collision stress, the downstream tends to be smooth, and the upstream experiences headward erosion. Laterally, the nearly vertical channel banks formed by erosion continuously supply material to the channel, resulting in the gradual widening of the erosion channel and the lateral shift of the erosion platform. This research on the erosion processes provides a scientific reference for predicting and assessing lahar disasters. © 2025 Elsevier B.V.

关键词： CFD-DEM Erosion processes Lahar Lateral evolution Longitudinal evolution Particle movement

来源：评论

学校读者我要写书评

暂无评论

Cross-Dataset Evaluation of an Effective Face Anti-Spoofing Algorithm 5

Cross-Dataset Evaluation of an Effective Face Anti-Spoofing ...

引用

5th IEEE International Conference on Pattern Recognition and Machine Learning, PRML 2024

作者： You, Xingyi Zhao, Xiaohu China University of Mining and Technology School of Information and Control Engineering National and Local Joint Engineering Laboratory of Internet Applied Technology on Mines Xuzhou China

ISBN: (纸本)9798350355925

Face anti-spoofing (FAS) is a kind of face-liveness detection technology that is the key to ensuring the reliability of face recognition results. In recent years, some deep learning-based methods have performed well in intra-tests. However, their limited ability to extract intrinsic features from face images often hinders generalization to attacks in unknown domains and leads to poor performance. In this paper, we propose a novel FAS method based on domain generalization, comprising an image encoder, two lightweight feature extractors (identity (I-FT) and style (S-FT), and a modulation factor. Initially, deep features extracted from the ResNet34 network are utilized to convert input face images into high-dimensional feature vectors. Subsequently, two lightweight feature extraction modules learn distinct hints related to identity and style information from the image encoder. Finally, an adjustment factor is adopted that adjusts the extracted feature parameters for enhancing model performance on domain generalization tasks for anti-fraud purposes involving faces. After the verification of a large number of experimental results, we find that the proposed method has good domain generalization ability and shows excellent performance on different datasets. © 2024 IEEE.

关键词： Cross-Dataset Face anti-spoofing feature extractor

来源：评论

学校读者我要写书评

暂无评论

ReMERT: Relational Memory-Based Extraction for Relational Triples 10th

ReMERT: Relational Memory-Based Extraction for Relational Tr...

引用

10th CCF Conference on Natural Language Processing and Chinese Computing, NLPCC 2021

作者： Zhao, Chongshuai Dai, Xudong Feng, Lin Liu, Peng National Joint Engineering Laboratory of Internet Applied Technology of Mines China University of Mining and Technology Jiangsu Xuzhou China IFLYTEK Anhui Hefei China

ISBN: (纸本)9783030884796

Relational triples extraction aims to detect entity pairs (subjects, objects) along with their relations. Previous work failed to deal with complex relationship triples, such as overlapping triples and nested entities, and lacked semantic representation in the process of extracting entity pairs and relationships. To mitigate these issues, we propose a joint extraction model called ReMERT, which first decomposes the joint extraction task into three interrelated subtasks, namely RSE (Relation-specific Subject Extraction), RM (Relational Memory) module construction and OE (Object Extraction). The first subtask is to distinguish all subjects that may be involved with target relations, the second is to retrieve target relational representation from RM module, and the last is to identify corresponding objects for each specific (s, r) pair. Additionally, RSE and OE subtasks are further deconstructed into sequence labeling problems based on the proposed hierarchical binary tagging scheme. Owing to the reasonable decomposition strategy, the proposed model can fully capture the semantic interdependency between different subtasks, as well as reduce noise from irrelevant entity pairs. Experimental results show that the proposed method outperforms previous work by 0.8% (F1 score), achieving a new state-of-the-art on Chinese DuIE datasets. We also adopt sufficient experiments and obtain promising results both in public English NYT and Chinese DuIE datasets. © 2021, Springer Nature Switzerland AG.

关键词： Extraction

来源：评论

学校读者我要写书评

暂无评论

Recent developments of nanomaterials-based conductive type methane sensors

引用

Rare Metals 2021年第6期40卷 1515-1527页

作者： Ming-Zhi Jiao Xiao-Yu Chen Ke-Xiang Hu De-Yu Qian Xiao-Hu Zhao En-Jie Ding Research Center for Internet of Things State and Local Joint Engineering Laboratory of Perception MineChina University of Mining and TechnologyXuzhou 221008China Jiangsu Key Laboratory of Fire Safety in Urban Underground Space China University of Mining and TechnologyXuzhou 221008China School of Mines China University of Mining and TechnologyXuzhou 221116China

Methane is an explosive gas in coalmines and needs to be monitored by methane *** methane sensors are small,simple and stable,and they are very promising for mining safety or home safety *** can even be employed in mining internet of things if the power consumption can be lowered down to few *** researches of nanomaterialsbased conductive-type methane sensors have been reported *** review intends to present a comprehensive and critical summary on the recent progresses in the nanomaterials-based conductive-type methane sensors *** excellent methane-sensitive nanomaterials will be present,such as SnO2,ZnO,TiO2,WO3,carbon nanotubes,graphene,rare earth metal-based perovskite oxides and their *** attention is given to the synthetic methods of the nanomaterials,sensing mechanisms of the nanomaterials and the relationship between the sensing performance and the structures and components of the ***,the future trends and perspectives of nanomaterials-based conductive-type methane sensors are proposed.

关键词： Nanomaterials Methane sensors Conductive gas sensors Sensing mechanism

来源：评论

学校读者我要写书评

暂无评论

Microparticle stabilized foam slurry for coal spontaneous combustion control and its engineering application

引用

Powder technology 2025年

作者： Shuzhen Shao Shiliang Shi Yi Lu Chun Liu Qingqiong Yan Tao Wang Hunan University of Science and Technology School of Resource Environment and Safety Engineering Xiangtan Hunan 411201 China Hunan Engineering Research Center for Fire and Explosion Prevention Materials and Equipment in Underground Spaces Xiangtan Hunan 411201 China Key Laboratory of Fire and Explosion Prevention and Emergency Technology in Hunan Province Xiangtan Hunan 411201 China The National Joint Engineering Laboratory of Internet Applied Technology of Mines China University of Mining and Technology Xuzhou 221116 China

To solve the problem of poor stability, portability and adhesion of traditional filling materials for regenerated roof coal spontaneous combustion prevention and control, a modified particulate stabilized foam (MSF) was proposed from the perspective of material modification. By comparing the effects of different surfactants and stabilizers on foaming height and stable time, the optimal ratio of MSF slurry was determined. The formation mechanism of MSF and the influence of microparticle size on foam stability were revealed by microscopic characterization experiments. Finally, the engineering applicability of MSF slurry is verified by field application. The results show that 2.5 g/L AES + 1.5 g/L PAM is the optimal surfactant composite ratio. The most comprehensive performance of MSF was achieved at a microparticle size of 55–65 μm, with a pore size of 350–400 μm, which could effectively penetrate the regenerated roof fracture channels without forming a filter cake. The average contact angle and zeta potential of the microparticles increased in the composite surfactant, and the microparticles were stably adsorbed at the gas-liquid interface of the foam. The plastic viscosity and yield stress of MSF slurries are increased compared to water-based foams. The field application shows that MSF slurry can effectively inhibit coal spontaneous combustion, control the risk of gas, and improve the safe production environment of coal mines

关键词：

来源：评论

学校读者我要写书评

暂无评论

Wide-Angle Ultra-Broadband Metamaterial Absorber with Polarization-Insensitive Characteristics

引用

Chinese Physics Letters 2021年第2期38卷 102-105页

作者： Peng Chen Xianglin Kong Jianfei Han Weihua Wang Kui Han Hongyu Ma Lei Zhao Xiaopeng Shen School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China National and Local Joint Engineering Laboratory of Internet Application Technology on Mine China University of Mining and TechnologyXuzhou 221116China School of Information and Control Engineering China University of Mining and TechnologyXuzhou 221116China

An ultra-wideband metamaterial absorber is developed,which is polarized-insensitive and *** layers of square resistive films comprise the proposed *** optimal values of geometric parameters are obtained,such that the designed absorber can achieve an ultra-broadband absorption response from 4.73 to 39.04 GHz(relative bandwidth of 156.7%)for both transverse electricity and transverse magnetic ***,impedance matching theory and an equivalent circuit model are utilized for the absorption mechanism *** compatibility of equivalent circuit calculation results,together with both full-wave simulation and experimental results,demonstrates the excellent performance and applicability of the proposed metamaterial absorber.

关键词： absorber transverse absorption

来源：评论

学校读者我要写书评

暂无评论

Dust distribution characteristics of the breathing zone in the walkway area of fully-mechanized mining face: a case study

引用

Scientific Reports 2025年第1期15卷 1-14页

作者： Zhang, Wei Tu, Qingyi Xue, Sheng Xing, Fei Xu, Xingxing Zhao, Zuheng Li, Chao Guizhou Energy Group Corporation Limited Guiyang 550000 China Guizhou Research Institute of Coal Mine Design Co. LTD Guiyang 550000 China Joint National-Local Engineering Research Centre for Safe and Precise Coal Mining Anhui University of Science and Technology Huainan 232001 China School of Safety Science and Engineering Anhui University of Science and Technology Huainan 232001 China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology Huainan 232001 China Hongliulin Mining Co. Ltd Shaanxi Coal and Chemical Industry Group Co. Ltd Shenmu 719300 China

To understand the dust distribution characteristics of fully mechanized mining faces, this study utilized the gravimetric method to sample dust in the walkway area during the coal cutting process of the shearer, followed by testing and analysis of the dust samples. The research findings reveal that the pollution level in the walkway area significantly surpasses coal mine safety regulations. There is no significant correlation between variations in dust concentration and dust quantity at different locations, with the region within 6 m behind the shearer exhibiting the highest dust quantity. The rate of change in respirable dust quantity is notably lower than that of non-respirable dust quantity. In all areas except those corresponding to the shearer, the number of dust particles within the range of 0 to 10 μm exceeds 90%. Additionally, dust particles on the mining face have smooth surfaces but are predominantly elongated in shape. These findings underscore the current inadequacies in effectively controlling dust in walkway areas. Therefore, there is a pressing need to implement more technological measures to control dust in these areas, with a specific emphasis on reducing the quantity of respirable dust, rather than solely focusing on variations in dust concentration. © The Author(s) 2025.

关键词： Dust concentration Dust shape Mining face Particle size distribution Walkway area

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：