检索结果-内蒙古大学图书馆

An Unconfined Monocular Stereo-PIV Measurement Method for Gas-Liquid Pipe Flow

IEEE Sensors Journal 2025年第11期25卷 20104-20112页

作者： Wang, Haixia Xue, Ting Tianjin University Tianjin Key Laboratory of Process Measurement and Control College of Electrical and Information Engineering Tianjin300072 China

Stereo-PIV encounters intricate challenges in flow measurement, especially accurate target localization and synchronized control of dual cameras. To overcome these obstacles, a comprehensive study delves into gas-liquid two-phase flow utilizing a monocular Stereo-PIV system. To reduce the need for high-precision target localization, a method is proposed that integrates particle features for corner extraction and spatial consistency for precise matching by pyramid up-down sampling. The approach effectively mitigates scale variance-induced mismatches and facilitates accurate spatial plane reconstruction. Validation is conducted utilizing particle simulation to assess the accuracy of feature extraction and matching and their impact on spatial plane reconstruction. Furthermore, optical distortion calibration results derived from gas-liquid two-phase flow are compared with experimental data to investigate the accuracy of real plane reconstruction. The accuracy of three-dimensional velocities is evaluated across planes with various errors. Finally, three-dimensional velocity profiles are characterized within slug flow structures, thereby offering insights into velocity variation characteristics. © 2001-2012 IEEE.

关键词： Stereo image processing

来源：评论

学校读者我要写书评

暂无评论

Effect of applied electric fields on supralinear dendritic integration of interneuron

引用

Chinese Physics B 2024年第2期33卷 84-95页

作者：樊亚琴魏熙乐卢梅丽伊国胜 Tianjin Key Laboratory of Process Measurement and Control School of Electrical and Information EngineeringTianjin UniversityTianjin 300072China School of Information Technology Engineering Tianjin University of Technology and EducationTianjin 300222China

Evidences show that electric fields(EFs)induced by the magnetic stimulation could modulates brain activities by regulating the excitability of GABAergic ***,it is still unclear how and why the EF-induced polarization affects the interneuron response as the interneuron receives NMDA synaptic *** the key role of NMDA receptor-mediated supralinear dendritic integration in neuronal computations,we suppose that the applied EFs could functionally modulate interneurons’response via regulating dendritic *** first,we build a simplified multi-dendritic circuit model with inhomogeneous extracellular potentials,which characterizes the relationship among EF-induced spatial polarizations,dendritic integration,and somatic *** performing model-based singular perturbation analysis,it is found that the equilibrium point of fast subsystem can be used to asymptotically depict the subthreshold input–output(sI/O)relationship of dendritic *** predicted that EF-induced strong depolarizations on the distal dendrites reduce the dendritic saturation output by reducing driving force of synaptic input,and it shifts the steep change of sI/O curve left by reducing stimulation threshold of triggering NMDA ***,the EF modulation prefers the global dendritic integration with asymmetric scatter distribution of NMDA ***,we identify the respective contribution of EF-regulated dendritic integration and EF-induced somatic polarization to an action potential generation and find that they have an antagonistic effect on AP generation due to the varied NMDA spike threshold under EF stimulation.

关键词： GABAergic interneuron electrical field supralinear dendritic integration action potential generation

来源：评论

学校读者我要写书评

暂无评论

Microwave Photonics-Based Small Hydrostatic Pressure Sensing Assisted by Convolutional Neural Network

引用

IEEE Sensors Journal 2025年第11期25卷 20948-20955页

作者： Li, Songlin Xue, Ting Wu, Yan Li, Zhuping Wu, Bin Tianjin University Tianjin Key Laboratory of Process Measurement and Control School of Electrical and Information Engineering Tianjin300072 China Tianjin University State Key Laboratory of Precision Measuring Technology and Instruments Tianjin300072 China

Hydrostatic pressure measurement is essential in many industries, such as oil and gas production, chemical processing, and environmental monitoring. Due to the minimal impact of small hydrostatic pressure on ordinary silica optical fibers, research on its measurement utilizing optical fiber sensing technology remains limited. In this paper, a novel microwave photonics technique, termed optical carrier-based microwave interferometry (OCMI), is utilized for small hydrostatic pressure sensing with the assistance of a convolutional neural network (CNN). The theory of OCMI-based phase demodulation is established, and numerical simulations are conducted to investigate the factors affecting the axial displacement of the fiber core. In practical experiments, the phase demodulation method is applied to small hydrostatic pressure measurements;however, the results are suboptimal. Therefore, the CNN is developed to assist in the implementation of accurate small hydrostatic pressure sensing. The small hydrostatic pressures predicted by the well-trained CNN model are in good agreement with the actual values, with an error of less than 0.25 kPa. In addition, the prediction results from multiple Fabry-Perot interferometers demonstrate the feasibility and effectiveness of utilizing CNN for OCMI-based small hydrostatic pressure sensing. The introduction of machine learning broadens the application scope of the OCMI technique, allowing it to be employed for distributed sensing of a wider range of physical, chemical, and biological quantities. © 2001-2012 IEEE.

关键词： Interferometry

来源：评论

学校读者我要写书评

暂无评论

Sampled-data bipartite containment control over a network of wave equations

引用

Science China(Information Sciences) 2023年第9期66卷 21-34页

作者： Yining CHEN Zhiqiang ZUO Yijing WANG School of Artificial Intelligence Tiangong University Tianjin Key Laboratory of Process Measurement and Control School of Electrical and Information Engineering Tianjin University

This paper studies the bipartite containment control problem for a network of wave equations.A distributed sampled-data control protocol is proposed such that the follower states converge to a convex hull spanned by the leader trajectories and their opposites. A criterion for bipartite containment control is derived by applying the constructed Lyapunov-Krasovskii functional. The well-posedness of the closedloop system is verified using the semigroup and induction methods. Furthermore, the effectiveness of the theoretical results is demonstrated through numerical examples.

关键词： bipartite containment control sampled-data control multi-agent system partial differential equation

来源：评论

学校读者我要写书评

暂无评论

Gas Evolution Monitoring in Lithium Batteries Based on Nonlinear Ultrasound Technique 43

Gas Evolution Monitoring in Lithium Batteries Based on Nonli...

引用

43rd Chinese control Conference, CCC 2024

作者： Liu, Shihao Bao, Yong Tan, Chao Tianjin University Tianjin Key Laboratory of Process Measurement and Control School of Electrical and Information Engineering Tianjin300072 China

ISBN: (纸本)9789887581581

Recently, there has been renewed interest in gas evolution monitoring in Lithium Batteries. Accurate gas evolution monitoring helps to gain insight information for safety, efficiency, and the degradation of the battery. Due to the advantage of low cost, efficiency, and high sensitivity to material changes, various ultrasound-based techniques have been developed for gas evolution monitoring. However, these ultrasonic monitoring techniques, using travel-time or waveform amplitude measurement, cannot resolve small gas volume changes below the dead volume for early warning. In this paper, a novel gas evolution monitoring method based on the nonlinear ultrasound theory has been studied. With the use of high-intensity ultrasound excitation, the second harmonic amplitude, generated due to ultrasound nonlinear effect, can be used to detect the presence of bubbles. Numerical simulation has been conducted to validate the performance of the proposed nonlinear ultrasonic gas evolution monitoring method. Results indicate that the nonlinear ultrasonic method has a higher spatial resolution for gas evolution detection in lithium batteries. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Lithium batteries

来源：评论

学校读者我要写书评

暂无评论

controllable phase conversion of nickel-based catalysts by sulfur induced electrodeposition for efficient hydrogen evolution

引用

Journal of Energy Chemistry 2025年第4期103卷 665-673页

作者： Zehao Zang Yangyang Ren Chunyan Fan Yahui Cheng Shuquan Zhang Lanlan Li Xiaofei Yu Xiaojing Yang Zunming Lu Xinghua Zhang Hui Liu School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Tianjin Key Laboratory of Process Control and Green Technology for Pharmaceutical Industry Department of ElectronicsNankai UniversityTianjin 300350China Tianjin NanKai Hospital Integrated Chinese and Western Medicine HospitalTianjin UniversityTianjin 300102China School of Materials Science and Engineering Tianjin UniversityTianjin 300072China

Exploring efficient transition-metal-based electrocatalysts is critical for the wide application of electrochemical hydrogen generation *** the phase displays prominent influence on their performance,it remains a major challenge to achieve phase regulation in the same synthesis method and elucidate the intrinsic relationship between the phase and ***,we developed a sulfur induced electrodeposition strategy to achieve the precise phase regulation of nickel-based materials from Ni(OH)_(2)to Ni and Ni_(3)S_(2).S atoms can be introduced into Ni and Ni(OH)_(2)due to sulfur inducement,and the S proportion is finely controlled via changing the deposition ***,the obtained S-Ni catalyst displays enhanced hydrogen evolution activity with an ultralow overpotential of 27 mV at 10 mA cm^(-2),which is superior to the S-Ni(OH)_(2),Ni_(3)S_(2),and even Pt/*** functional theory(DFT)calculations disclose the S-Ni catalyst exhibits optimal charge state and local coordination,remarkably optimizing the water adsorption and Ni-H^(*)binding *** work provides new insights into phase regulation in electrodeposition and an understanding of the intrinsic relationship between phase and activity.

关键词： Phase conversion Hydrogen evolution reaction Nickel-based catalysts Sulfur atoms modulation Local structure regulation

来源：评论

学校读者我要写书评

暂无评论

Transcriptome analysis and functional gene identification reveals potential mechanisms of heat stress response of Lactiplantibacillus plantarum CGMCC8198

引用

Food Bioscience 2023年第1期51卷 152-158页

作者： Jia-Yi Da Mao-Sheng Xi Han-Lu Li Min-Min Liu Cheng-Hui Zhou Zhong-Yuan Li Ya-Jian Song Sa Zhou Tong-Cun Zhang Xue-Gang Luo Key Laboratory of Industrial Fermentation Microbiology of the Ministry of Education and Tianjin Key Laboratory of Industrial Microbiology College of BiotechnologyTianjin University of Science and TechnologyTianjin300457China Tianjin Engineering Research Center of Microbial Metabolism and Fermentation Process Control Tianjin300457China

Lactiplantibacillus plantarum is an important probiotic bacterium and extensively applied to functional *** survival is strongly affected by the heat-shock process during *** is thought to be able to enhance bacteria resistance to heat *** this study,the results of transcriptomics and bioinformatics analysis showed that alcohol dehydrogenase adhE-like,phosphoribose-ATP pyrophosphatase hisE,flavodoxin ykuN,and dihydropterin aldolase folB might be related with heat resistance of *** ***,after these genes were expressed in Escherichia coli,survival rate,hydrophobicity and membrane integrity of the recombinant bacteria under high temperature were also significantly ***,by screening the strains after multiple rounds of acclimation,a strain(XH)with better heat tolerance was obtained,and the results of qRT-PCR showed that these four genes,especially hisE,were upregulated in the acclimated strain when it was treated with high *** findings indicated that adhE-like and some other potential genes could improve the heat resistance of lactic acid bacteria,and might be used as indicators for screening of heat-tolerant probiotics strains.

关键词： Probiotic Heat stress Functional genes Acclimation

来源：评论

学校读者我要写书评

暂无评论

A Ground-Based Cloud Motion Prediction Method 42

A Ground-Based Cloud Motion Prediction Method

引用

42nd Chinese control Conference, CCC 2023

作者： Lu, Zhiying Dong, Yixian Nie, Bing Cao, Xinlei Zhang, Jianfeng Key Laboratory of Smart Grid of Tianjin University Tianjin300072 China Tianjin Key Laboratory of Process Testing and Control Tianjin300072 China School of Information Science and Engineering Shandong Normal University Jinan250000 China

ISBN: (纸本)9789887581543

Cloud conditions play a significant role in affecting the output power of solar photovoltaic (PV) panels, and ground-based cloud images can provide valuable data for cloud monitoring and ultra-short-term PV power forecasting. From the perspective of image sequence prediction, a cloud motion prediction method based on Cascade Causal LSTM is proposed by using the ground-based cloud image data taken by Total Sky Imager, realizing the prediction of cloud contour change. On this basis, digital image processing technology is used for features extraction from the ground-based cloud images, including clear sky irradiance, clusters, color statistics, and texture that affect PV power generation. Finally, the ultra-short-term PV power forecasting model with multi-information fusion is established. Experimental results demonstrate that the proposed PV power prediction method can effectively improve the accuracy of ultra-short-term PV power forecasting. It is further shown that the effectiveness of the proposed cloud motion prediction method. © 2023 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Extraction

来源：评论

学校读者我要写书评

暂无评论

Investigation on Slug Flow Parameters Based on PIV Phase Discrimination

Investigation on Slug Flow Parameters Based on PIV Phase Dis...

引用

2023 tianjin University-IET Electrical and Information Engineering Doctoral Forum, TJU IET 2023

作者： Wang, Haixia Xue, Ting College of Electrical and Information Engineering Tianjin Key Laboratory of Process Measurement and Control Tianjin University Tianjin China

ISBN: (纸本)9781839539824

Investigation of synchronously acquiring multiple parameters holds valuable insights into flow characteristics. When employing particle image velocimetry in gas-liquid slug flow, the integration of phase discrimination assumes an unequivocal role. This not only facilitates the separation of gas and liquid phases to distinctly capture velocity field distributions but also enables the extraction of characteristic parameters beyond velocity from gas or liquid phase. In this study, in addition to velocity measurements employing particle image velocimetry, structural parameters measurement methodologies within slug flow, such as liquid film thickness and elongated bubble length, are introduced based on phase discrimination results. By leveraging the inherent relationships among flow rate parameters, the measurement parameters are cross-validated based on experimental findings to assess the feasibility of the method. Ultimately, an exploration and analysis of flow characteristics in slug flow under different flow conditions are undertaken. © The Institution of Engineering & Technology 2023.

关键词： Velocity measurement

来源：评论

学校读者我要写书评

暂无评论

E-Nose-Based Domain-Generalization Recognition of Ignitable Liquids 43

E-Nose-Based Domain-Generalization Recognition of Ignitable ...

引用

43rd Chinese control Conference, CCC 2024

作者： Song, Tian-Shu Chen, Zhen-Peng Hou, Hui-Rang Li, Hong-Yue Meng, Qing-Hao Institute of Robotics and Autonomous Systems School of Electrical and Information Engineering Tianjin University Tianjin Key Laboratory of Process Measurement and Control Tianjin300072 China

ISBN: (纸本)9789887581581

Detecting ignitable liquids (ILs) at the scene of a fire is crucial for fire investigation. The electronic nose (e-nose) is crucial for detecting ILs due to its affordability and rapid response time. process limitations and changes in environmental conditions can cause variations in the reactions of multiple e-noses with the same sensor array to the same input gas. This can significantly reduce the accuracy of identifying ILs when deploying a model trained on one e-nose to other e-noses. In order to tackle the issue of cross-platform identification of ILs using e-noses, we developed a feature mute gated network (FMG-Net). This network is capable of maintaining consistency in the shared components of different e-noses at the low-level feature level while effectively muting the distinct low-level features. FMG-Net is comprised of a main network and multiple branch networks that are specific to different domains. Initially, a subsidiary domain-specific convolutional neural network (SDS-CNN) is trained to learn the network parameters on various e-nose platforms with known labels. Additionally, the backbone network generates low-level features of the e-nose responses. Furthermore, the SDS-CNN incorporates random input of low-level features and generates a mask using the gradient. This mask is then used to explicitly remove the non-overlapping parts of the low-level features. At last, the low-level features are sent back to the backbone network for further training once the non-overlapping parts have been removed. Experiments were conducted to identify four types of ILs (diesel, gasoline, ethanol, and thinner) using five self-made e-nose platforms with identical sensor arrays. The results indicated that the proposed FMG-Net consistently outperforms other domain-generalization algorithms in terms of recognition accuracy and parameter sizes. FMG-Net has the ability to detect volatile gases in ILs using an e-nose, even without the need for a dataset. © 2024 Technical Committ

关键词： Convolutional neural networks

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：