检索结果-内蒙古大学图书馆

Efficient reduction and adsorption of Cr(Ⅵ)using FeCl_(3)-modified biochar:Synergistic roles of persistent free radicals and Fe(Ⅱ)

引用

Journal of Environmental sciences 2024年第3期137卷 626-638页

作者： Shujie Hu Chengshuai Liu Hongling Bu Manjia Chen Ying-heng Fei National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of ScienceGuiyang 550081China School of Environment Science and Engineering Guangzhou UniversityGuangzhou 510006China College of Resources and Environment Chongqing SchoolUniversity of Chinese Academy of SciencesChongqing 400714China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006China

Transition metal iron and persistent free radicals(PFRs)both affect the redox properties of biochar,but the electron transfer relationship between them and the coupling reduction mechanism of Cr(Ⅵ)requires further *** untangle the interplay between iron and PFRs in biochar and the infuences on redox properties,FeCl_(3)-modified rice husk biochar(FBCs)was prepared and its reduction mechanism for Cr(Ⅵ)without light was *** FBCs had higher surface positive charges,oxygen-containing functional groups,and PFRs compared with pristine rice husk biochar(BC).Phenoxyl PFRs with high electrondonating capability formed in *** pronounced electron paramagnetic resonance signals showed that the PFRs preferred to form at lower Fe(Ⅲ)*** a high concentration of Fe(Ⅲ)would be reduced to Fe(Ⅱ)and consumed the formed *** kinetics and X-ray photoelectron spectroscopy analysis indicated that the FBCs effectively enhanced the Cr(Ⅵ)removal efficiency by 1.54-8.20 fold and the Cr(Ⅵ)reduction efficiency by 1.88-9.29 fold compared to those of *** quenching and competitive reductant addition experiments revealed that the higher Cr(Ⅵ)reduction performance of FBCs was mainly attributed to the formed PFRs,which could contribute to~74.0%of Cr(Ⅵ)reduction by direct or indirect electron *** PFRs on FBCs surfaces could promote the Fe(Ⅲ)/Fe(Ⅱ)cycle through single electron transfer and synergistically accelerate~52.3%of Cr(Ⅵ)*** study provides an improved understanding of the reduction mechanism of iron-modified biochar PFRs on Cr(Ⅵ)in environments.

关键词： Biochar Iron-modification Cr(Ⅵ) Electron transfer Reduction mechanism

来源：评论

学校读者我要写书评

暂无评论

CutPaste-ROI: An Industrial Anomaly Data Detection Method based on Self-supervised Learning

CutPaste-ROI: An Industrial Anomaly Data Detection Method ba...

引用

作者： Yang, Le Yang, Wenhan Wang, Zhengsong School of Control Engineering Northeastern University Hebei Qinhuangdao China College of Information Science and Engineering Northeastern University Shenyang China

This paper presents a method called CPR (CutPaste-ROI) to enhance the accuracy of detecting anomalies in industrial settings. The method addresses the issue of sample scarcity in detecting defects. CPR is based on the CutPaste data augmentation method, but introduces the concept of region of intrerst (ROI) and uses the Otsu’s adaptive threshold segmentation method to identify the target region of the image. This ensures that the generated defects are placed in the foreground target region, avoiding the negative impact of "polluted data" on the performance of neural network models. Additionally, the Poisson image fusion algorithm is used to improve the realism and naturalness of simulated defect samples. The self-attention mechanism is introduced to enhance the sensitivity of neural networks to the key features of data. Experiments were conducted on an industrial anomaly detection dataset to validate the effectiveness of the CPR method. The results indicate that CPR can significantly improve the accuracy and robustness of industrial anomaly detection. Compared with other data augmentation methods, CPR generates more realistic and diverse defect samples. © Society for Imaging science and Technology 2024.

关键词： Anomaly detection

来源：评论

学校读者我要写书评

暂无评论

RFNet: A Redundancy-Reduced and Frequency-Aware Feature Fusion Network for RGB-T Semantic Segmentation 10

RFNet: A Redundancy-Reduced and Frequency-Aware Feature Fusi...

引用

10th IEEE Smart World Congress, SWC 2024

作者： Guo, Yixin Chen, Zhenxue Rong, Xuewen Liu, Chengyun Li, Yidi Shandong University School of Control Science and Engineering Jinan China Taiyuan University of Technology Computer Science and Technology Taiyuan China

ISBN: (纸本)9798331520861

Traditional semantic segmentation approaches primarily utilize RGB images, which struggle in complex scenes. To address this challenge, the multi-modal solution that fuses RGB and thermal (RGB-T) images can exploit the advantages of these modalities to improve accuracy and stability of segmentation. However, how to effectively fuse multi-modal and multi-level features remains a significant challenge. To this end, a Redundancy-Reduced and Frequency-Aware Feature Fusion Network (RFNet) is proposed. The RFNet employs a dual-stream encoder-decoder architecture to separately handle the extracted features from two modalities. This network reduces redundancy in shallow feature fusion and integrates frequency-aware attention mechanisms in deep feature fusion, efficiently capturing complementary information from multi-modal and multi-level features. Experiments on the MFNet dataset indicate that RFNet outperforms the majority of current networks in terms of segmentation performance. © 2024 IEEE.

关键词： Semantic Segmentation

来源：评论

学校读者我要写书评

暂无评论

A trajectory summarisation gener

引用

IET Cyber-Systems and Robotics 2023年第1期5卷 154-164页

作者： Weifeng Liu Liwen Ma Shaoyong Qu Zhangming Peng School of Electrical and Control Engineering Shaanxi University of Science and TechnologyXi'anChina School of Artificial Intelligence Hangzhou Dianzi UniversityHangzhouChina School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhouChina

The semantic representation of the trajectory is conducive to enrich the content oftrajectory data mining. A trajectory summarisation generation method based on themobile robot behaviour analysis was proposed to realize the abstract expression andsemantic representation of the spatio-temporal motion features of the robot and itsenvironmental interaction state. First, the behavioural semantic modelling and representationof the mobile robot are completed by modelling the sub-trajectory andcalculating the topological behaviour (TOP). Second, Chinese word segmentation andsemantic slot filling methods are used to combine with hierarchical clustering to performbasic word extraction and classification for describing trajectory sentences. Then, thedescription language frame is extracted based on the TOP, and the final trajectorysummarisation is generated. The result shows that the proposed method can semanticallyrepresent robot behaviours with different motion features and topological features,extract two verb-frameworks for describing the sentences according to their topologicalfeatures, and dynamically adjust the syntactic structure for the different topological behavioursbetween the target and the environment. The proposed method can generatesemantic information of relatively high quality for spatio-temporal data and help tounderstand the higher-order semantics of moving robot behaviour.

关键词： behaviour analysis behaviour semantics natural language processing semantic trajectory trajectory summarisation

来源：评论

学校读者我要写书评

暂无评论

Optimization of wireless optical communication quality using near-perfect Laguerre-Gaussian beam in the propagating field

引用

Optical and Quantum Electronics 2025年第1期57卷 1-16页

作者： Wang, Shuailing Xu, Jingping Yang, Yaping Liu, Qian Cheng, Mingjian School of Physics Science and Engineering Tongji University Shanghai200092 China Beijing Institute of Control and Electronic Technology Beijing100038 China School of Physics Xidian University Xi’an710071 China

We propose the use of a near-perfect Laguerre-Gaussian beam (NPLGB) as the propagating field, which maintains a fixed beam radius not only at the source plane but also throughout the entire propagation process, unaffected by orbital angular momentum (OAM). Furthermore, the beam radius of NPLGB is less influenced by radial index, hence NPLGB exhibits perfect property for both OAM and radial index. To evaluate the transmission performance of NPLGB, we introduced the centroid ring radius (CRR) as a novel evaluation metric and validated its effectiveness. Furthermore, we explore the application of NPLGB in wireless optical communications and assess its performance in atmospheric turbulence. Our results reveal that NPLGB offers significantly improved transmission quality compared to traditional Laguerre-Gaussian beam, with the received signal largely unaffected by OAM modes or radial index. The CRR framework provides a comprehensive explanation for the behavior of NPLGB at the receiving end. In addition, we investigated the effects of turbulence and beam parameters on the received probability of NPLGB, and discussed the influence of the radial index on the total crosstalk probability of NPLGB. The application of NPLGB will significantly advance the objective of utilizing LGB to achieve unrestricted degrees of freedom in wireless optical communications, and offers valuable insights for the development of next-generation vortex beams. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2025.

关键词： Gaussian beams

来源：评论

学校读者我要写书评

暂无评论

Evoked Tactile Feedback for Fingertip Force Using Transcutaneous Electrical Nerve Stimulation with Concurrent Frequency and Pulse Width Modulations 8

Evoked Tactile Feedback for Fingertip Force Using Transcutan...

引用

8th International Conference on Robotics and Automation engineering, ICRAE 2023

作者： Khan, Amir Li, Ke Institute of Intelligent Medical Engineering School of Control Science Engineering Shandong University Jinan China

ISBN: (纸本)9798350327656

Fingertips are the most active portions of our fingers during interaction with our surroundings. The incorporation of tactile feedback to the fingertips may enhance perception and interaction with the real environment. Frequency., pulse width., and amplitude modulations of transcutaneous electrical nerve stimulation (TENS) are extensively studied to elicit sensory feedback in hand for sensorimotor function. However., in this study., a new approach to eliciting tactile feedback was investigated using TENS frequency., pulse width., and their novel concurrent modulations in linearly positive and negative correlations for fingertip forces. An instructor regulated the TENS parameters by fingertip force to invoke tactile sensation, and participants administered response fingertip force to a force sensor resistor to express the nature (strength) of the evoked tactile sensation. The ratio of response fingertip force to stimulation fingertip force, abbreviated as the fingertip force elicitation ratio (ER), was examined for each TENS modulation in terms of mean and maximal fingertip forces. The results exhibited that both conventional (frequency and pulse width) and novel concurrent modulations of frequency and pulse width TENS can evoke tactile feedback for fingertip force control. Furthermore, the results demonstrated that the fingertip forces resulting from tactile feedback induced by concurrent frequency and pulse width modulations were stronger., more stable, and more consistent compared to the forces produced by their independent modulations. Future applications of the innovative concurrent TENS modulations may include evoking tactile feedback responses for grasping tasks, touchpad gestures, fingertip force control, and intelligent prostheses. © 2023 IEEE.

关键词： Force control

来源：评论

学校读者我要写书评

暂无评论

Research on Multi-Source Combined Supply System 6

Research on Multi-Source Combined Supply System

引用

6th IEEE International Conference on Civil Aviation Safety and Information Technology, ICCASIT 2024

作者： Huang, Yanan Zheng, Haojie Wang, Yulin Liaoning University of Engineering and Technology School of Electrical and Control Engineering Huludao China Changsha University of Science and Technology School of Electrical and Information Engineering Changsha China

ISBN: (纸本)9798350389418

In order to reduce the cost of the power generation system, reduce the rate of system wind and light abandonment, and build a cleaner, safer and more efficient power system, this paper establishes a PV-wind-battery optimal scheduling model with the objective of minimizing the system operating cost, and the system power balance, and the battery SOC range as constraints. The multi-source joint power supply system containing wind power, photovoltaic, energy storage system, and main grid is analyzed in the arithmetic example, and the daily power supply system cost is at least 0.173 million yuan when there is energy storage system participation, and the daily power supply cost is at least 0. 1 7 9 million yuan when there is no energy storage system participation, and the penalty cost of both of them for wind and light abandonment is 0.098 million yuan and 0.115 million yuan. It is proved that the system containing energy storage can effectively reduce the system power supply cost and reduce the rate of wind and light abandonment. © 2024 IEEE.

关键词： multivariate combined power supply system Photovoltaic-wind-battery optimal scheduling model wind and light discard rate

来源：评论

学校读者我要写书评

暂无评论

Adaptive dynamic surface control for quadrotor-slung load transportation system with uncertainties

引用

science China(Technological sciences) 2023年第10期66卷 2917-2929页

作者： DING Feng HUANG Jian SUN Chong AI Yong XU WenXia YANG ChenGuang School of Computer Science South-Central Minzu UniversityWuhan 430074China Key Laboratory of Ministryof EducationforImage Processing and Intelligent ControlHubei Key Laboratoryof Brain-inspired Intelligent Systems School of Artificial Intelligence and Automation Huazhong University of Science and TechnologyWuhan 430074China School of Computer Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Key Laboratory of Ministry of Education for Autonomous Systems and Networked Control Guangdong Engineering Technology Research Center of Control of Intelligent SystemsCollege of Automation Science and EngineeringSouth China University of TechnologyGuangzhou 510640China

Quadrotors play a significant role in our lives and are transforming our *** cable-suspended loads is an unavoidable quadrotor application trend and a hot research topic in the control ***,the load swing and unpredictability pose significant challenges to the quadrotor's *** this paper,an anti-swing controller with an inner-outer control strategy for the quadrotor-slung load transportation system is *** facilitate the controller design,the outer position dynamics are restructured in the form of ***,a virtual controller is created to force the underactuated states to the dynamic surface to ensure the position subsystem's *** improve robustness,an adaptive law is used to eliminate the effects of uncertain cable ***,a dynamic surface controller for the inner attitude subsystem is presented to drive the actual force to the virtual *** is demonstrated that the control strategy can stabilize the quadrotor despite mass and cable length *** results are provided to demonstrate the efficacy and durability of the proposed method.

关键词： quadrotor-slung load transportation system dynamic surface control adaptive law cascade system model uncertainties

来源：评论

学校读者我要写书评

暂无评论

Fourier Series Fitting-Based Intrusion Detection for Real-Time Industrial control Systems

Fourier Series Fitting-Based Intrusion Detection for Real-Ti...

引用

2024 International Conference on Artificial Intelligence of Things and Systems, AIoTSys 2024

作者： Zhang, Heng Wang, Yinchu Xue, Yawen Deng, Ruilong Li, Hongran Zhang, Jian School of Computer Engineering Jiangsu Ocean University Lianyungang China College of Control Science and Engineering Zhejiang University Hangzhou China

ISBN: (纸本)9798331507886

Recent incidents have shown the attacks against Industrial control System (ICS), which may result in failure or even catastrophe and prompt the studies of defense. Existing security systems are mostly based on network perimeter defenses which lacking effective countermeasures in the event that such defenses are bypassed and attackers gain access to the system. In this paper, we propose a Fourier series fitting based intrusion detection method, which enables a detection and an alarm when ICS is under attack. Specifically, we first divide the data into three parts based on time with a sliding window, namely real-Time data, sliding window data to be predicted, and historical data. Then we fit the data within the prediction window to the data around the window, together with the root mean squared error (RMSE) calculated for the data within the window and the historical data. The intrusion detection system (IDS) will alarm when the difference between the above RMSE and the reference one is greater than a threshold value. We test two types of data injection attacks, extensive simulations illustrate the effectiveness of our method in detecting both of these attacks. © 2024 IEEE.

关键词： Network intrusion

来源：评论

学校读者我要写书评

暂无评论

Network-based robust exponential fuzzy control for uncertain systems

Network-based robust exponential fuzzy control for uncertain...

引用

作者： Saravanakumar, Ramasamy Hoon Joo, Young Graduate School of Advanced Science and Engineering Hiroshima University Higashihiroshima Japan School of IT Information and Control Engineering Kunsan National University Gunsan-si Korea Republic of

This article studies the robust exponential stability and Takagi–Sugeno (T–S) fuzzy control synthesis for networked control systems via (Formula presented.) performance. The main aim of this paper is to design fuzzy controllers with less conservative results. Novel weighted integral inequalities (WIIs) are proposed based on Wirtinger's integral inequalities. The T–S fuzzy approach expresses nonlinear systems as linear submodels with IF–THEN rules for deriving the stability conditions. Then, by constructing a suitable Lyapunov–Krasovskii functional (LKF) and applying new WIIs, improved exponential stability and stabilization criteria are established in the form of linear matrix inequalities (LMIs). Three examples are provided to demonstrate the advantages and usefulness of the proposed novel method. Two are application-oriented examples, such as the variable speed wind turbine (VSWT) system and nonlinear mass-spring (NMS) system. © 2022 John Wiley & Sons, Ltd.

关键词： Networked control systems

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：