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生产建设项目水土保持信息化监管数据挖掘与应用

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中国水土保持 2024年第9期 73-78页

作者：周乐群韩凤翔徐公权姬俊虎赵继东鲁勇长江水利委员会长江流域水土保持监测中心站湖北武汉430010 长江水利委员会水土保持局湖北武汉430010 河南省地质局矿产资源勘查中心河南郑州450053

基于四川省攀枝花监管示范区和金沙江干流水电开发集中区2012—2018年批复的生产建设项目,以及2018年长江流域76个部批在建生产建设项目的水土保持监管信息,采取GIS空间分析技术、数理统计分析方法等,对获取的监管信息进行数据挖掘、分... 详细信息

基于四川省攀枝花监管示范区和金沙江干流水电开发集中区2012—2018年批复的生产建设项目,以及2018年长江流域76个部批在建生产建设项目的水土保持监管信息,采取GIS空间分析技术、数理统计分析方法等,对获取的监管信息进行数据挖掘、分析处理,明确监管成果可用于:①评价水行政主管部门水土保持监督管理工作;②分析评价区域支柱产业,确定地方水土保持监督管理重点;③作为水土保持监督执法的依据;④支撑政府决策,辅助制定政策文件;⑤考核水行政主管部门水土保持工作;⑥评价人为水土流失状况;⑦作为政府水土保持目标考核的依据。对监管数据的挖掘和应用,进一步明确了全面推动水土保持监管信息化、现代化和智能化建设的必要性,以及水土保持工作智慧化的必然性。

关键词：数据挖掘数据应用信息化监管水土保持生产建设项目

Electrochemical filtration for drinking water purification:A review on membrane materials,mechanisms and roles

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Journal of Environmental Sciences 2024年第7期141卷 102-128页

作者： Yuying Qi Donghao Li Shixuan Zhang fengxiang Li Tao Hua College of Environmental Science and Engineering Nankai UniversityTianjin 300350China Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationTianjin 300350China Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation Tianjin 300350China

Electrochemical filtration can not only enrich low concentrations of pollutants but also produce reactive oxygen species to interact with toxic pollutants with the assistance of a power supply,making it an effective strategy for drinking water *** addition,the application of electrochemical filtration facilitates the reduction of pretreatment procedures and the use of chemicals,which has outstanding potential for maximizing process simplicity and reducing operating costs,enabling the production of safe drinking water in smaller *** recent years,the research on electrochemical filtration has gradually increased,but there has been a lack of attention on its application in the removal of low concentrations of pollutants from low conductivity *** this review,membrane substrates and electrocatalysts used to improve the performance of electrochemical membranes are briefly ***,the application prospects of emerging single-atom catalysts in electrochemical filtration are also ***,several electrochemical advanced oxidation processes coupled with membrane filtration are described,and the related working mechanisms and their advantages and shortcomings used in drinking water purification are ***,the roles of electrochemical filtration in drinking water purification are presented,and the main problems and future perspectives of electrochemical filtration in the removal of low concentration pollutants are discussed.

关键词： Electrochemical filtration Drinking water Conductive membrane Low concentration Electrocatalyst

Ecological Risk Assessment and Spatial Analysis of Heavy Metal Cu and Cd in Surrounding Soils of a Brownfield

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Ecological Risk Assessment and Spatial Analysis of Heavy Met...

High-chromium vanadium-titanium magnetite all-pellet integrated burden optimization and softening-melting behavior based on flux pellets

中国土壤学会土壤环境专业委员会第二十次会议暨农田土壤污染与修复研讨会

作者： Hua Sun Wenjuan Zhu Li Xie Jinting Zhang fengxiang han Department of Resource Environment and Urban Planning Nanjing Agricultural University Department of Chemistry & Biochemistry Jackson State University

At present, most researches on brownfield are focused on the direct hazards of brownfield, and there is less research on the ecological risk of the surrounding environment. In addition, the study on the ecological risk of brownfield tends to ignore the tolerance and vulnerability of its risk receptors, and the study on the spatial and temporal tracking of the ecological risk of brownfield is relatively ***, based on the vulnerability of brownfield risk receptors, this paper analyzes the ecological risks in the surrounding areas of brownfield, and uses GIS software to characterize the evaluation results. Results show that Sumen area, Jiuniugang and Shuiquan area, Chuanshanlong had a high ecological risk before remediation and the ecological risk was significantly reduced after remediation. Thus the current study implies that the remediation action was effective left with a small area at high risk. The ecological vulnerability of cultivated land in the study area was the largest. This study implies that the area with a large ecological vulnerability and a high ecological risk, further remediation should be considered and the areas with a large ecological vulnerability and a low ecological risk the monitoring and prevention should be strengthened.

关键词： Ecological risk assessment Cu Cd Spatial difference

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 498-507页

作者： Bojian Chen Tao Jiang Jing Wen Guangdong Yang Tangxia Yu fengxiang Zhu Peng Hu School of Metallurgy Northeastern UniversityShenyang 110819China Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China Liaoning Key Laboratory for Metallurgical Sensor and Technology Shenyang 110819China State key laboratory of vanadium and titanium resources comprehensive utilization Panzhihua 617000China

High-chromium vanadium-titanium magnetite(HVTM)is a crucial polymetallic-associated resource to be *** allpellet operation is a blast furnace trend that aims to reduce carbon dioxide emissions in the *** referencing the production data of vanadium-titanium magnetite blast furnaces,this study explored the softening-melting behavior of high-chromium vanadium-titanium magnetite and obtained the optimal integrated burden based on flux *** results show that the burden with a composition of 70wt%flux pellets and 30wt%acid pellets exhibits the best softening-melting *** comparison to that of the single burden,the softening-melting characteristic temperature of this burden composition was *** melting interval first increased from 307 to 362℃and then decreased to 282℃.The maximum pressure drop(ΔPmax)decreased from 26.76 to 19.01 *** permeability index(S)dropped from 4643.5 to 2446.8 kPa·℃.The softening-melting properties of the integrated burden were apparently *** acid pellets played a role in withstanding load during the softening *** flux pellets in the integrated burden exhibited a higher slag melting point,which increased the melting temperature during the melting *** slag homogeneity and the TiC produced by over-reduction led to the gas permeability deterioration of the single *** segregation of the flux and acid pellets in the HVTM proportion and basicity mainly led to the better softening-melting properties of the integrated burden.

关键词： high-chromium vanadium-titanium magnetite softening-melting properties all pellets integrated burden flux pellets

Literature Review of Driving Fatigue Research based on Bibliometric Analysis

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： fengxiang Guo Yiwen Zhou Xiao'an Wang Jing Cai Faculty of Transportation Engineering， Kunming University of Science and Technology Yunnan Transportation Science Research Institute Co.， Ltd.

Driving for a long time can lead to fatigue， which can affect information processing and decision-making， potentially threatening driving safety. By exploring the generation and variation patterns of driving fatigue and clarifying the application status of its detection and warning technology， traffic safety can be improved. In order to understand the research progress of driving fatigue， based on the Web of Science core database， this paper obtained 2127 English literature published from 1998 to 2023 (as of May 12， 2023)， covering a total of 5963 authors and 6019 keywords， and the bibliometric tool VOSviewer and R-Bibliometrix are used to analyze the literatures. Firstly， the literature statistical analysis is carried out from annual distribution， country distribution， source journals， and core authors. Secondly， the research hotspots and trends are analyzed from keywords co-occurrence， high-impact literature， theme evolution， and development trends. Finally， the development trend of driving fatigue research is discussed. The result shows that the hotspots in the field of driving fatigue include driving fatigue detection， fatigue driving risk and fatigue research of professional drivers， driver alertness and coping strategies for driver fatigue， and driver fatigue under automatic driving. And the improvement of the accuracy and reliability of driving fatigue detection will be the difficult point to break through in the future. It is necessary to build a multi-disciplinary and meticulously quantified driving fatigue and its risk assessment system， and strengthen the control of fatigue risks. Research on intervention measures and education training for professional drivers needs to be deepened， while exploring the acceptance and compliance of intervention measures. Moreover， the evolution law and prevention strategies of driver fatigue under automatic conditions should be the focus of future research.

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长江流域水土流失类型分区及防治对策探讨

人民长江 2013年第10期44卷 105-108页

作者：张玉华韩凤翔长江水利委员会长江流域水土保持监测中心站湖北武汉430010

水土流失类型区划分是水土保持的重要内容。为此,在长江流域已有的水土保持分区基础上,利用水土流失综合防治成功经验和最新的数据资料,采取定性与定量相结合的方法,依据水力侵蚀和风力侵蚀的水土流失特点,将长江流域水土流失类型区划分... 详细信息

水土流失类型区划分是水土保持的重要内容。为此,在长江流域已有的水土保持分区基础上,利用水土流失综合防治成功经验和最新的数据资料,采取定性与定量相结合的方法,依据水力侵蚀和风力侵蚀的水土流失特点,将长江流域水土流失类型区划分为9个区。探讨了不同分区的水土流失防治对策,为今后长江流域不同类型区水土流失综合防治工程的规划、设计和施工提供技术依据。

关键词：水土流失类型区划分防治对策长江流域

A Comparative Study of Machine Learning Models for Traffic Accident Severity Prediction on Rural Highways

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Journal of Traffic and Transportation Engineering(English Edition) 2024年

作者： fengxiang Guo Jingyang Li Feng Zhu Bijiang Tian Wenchen Yang School of Transportation Science and Engineering， Harbin Institute of Technology Yunnan Key Laboratory of Digital Communications National Engineering Research Center for Efficient Maintenance， Safety and Durability of Roads and Bridges，Broadvision Engineering Consultants Co.， Ltd Kunming Faculty of Transportation Engineering， Kunming University of Science and Technology School of Civil and Environmental Engineering， Nanyang Technological University

The use of machine learning models for analyzing Traffic Accident Severity (TAS) is increasingly common in safety assessment and traffic accident prevention. However， many existing studies have not fully considered the importance of feature engineering， model hyperparameter optimization， and training set proportions， all of which significantly affect the performance of these models. This study addresses the research gap by developing a TAS model using the Light Gradient Boosting Machine (LightGBM) and integrating two feature engineering methods (Random Forest (RF) and Principal Component Analysis (PCA)). Additionally， we compared the LightGBM with three other machine learning models: Support Vector Machine (SVM)， Binary Logistic Regression (BL)， and Deep Neural Network (DNN). This comparison evaluates the effectiveness of different machine learning approaches in classifying TAS， taking into account variations in feature engineering techniques and training set proportions. The case study examines rural highway accidents in Yunnan Province， China， focusing on three categories of factors influencing TAS: accident characteristics， traffic flow， and highway conditions. Moreover， the SHAP (SHapley Additive exPlanations) values were employed to identify the primary factors contributing to the accident severity. The results show that with the training set size of 80%， all four models achieve the highest predictive accuracy for severe accidents. Notably， the PCA+lightGBM combination model outperforms others in overall accident prediction accuracy and has the highest recall rate and F1 score for severe accidents. Comparing the four models under different feature inputs， the impact of feature selection on model performance is less significant than reducing the data heterogeneity. LightGBM and DNN are more susceptible to data heterogeneity， and improving data homogeneity markedly boosts the model’s performance. Through SHAP analysis， it is evident that the modes of transportati

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美国农业面源污染控制生态补偿机制与政策措施

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农业环境与发展 2011年第4期28卷 127-131页

作者：汪洁马友华栾敬东王桂苓李冬 fengxiang han 安徽农业大学安徽合肥230036 密西西比州立大学美国密西西北州

简要概述农业面源污染控制的环境经济相关理论,回顾了美国农业面源污染治理的历程及"最佳管理实践措施",并分别从财政补偿、政策补偿、技术补偿、项目补偿四个方面分析研究美国生态补偿机制与政策措施的经验,从而提出对中国农业面源污... 详细信息

简要概述农业面源污染控制的环境经济相关理论,回顾了美国农业面源污染治理的历程及"最佳管理实践措施",并分别从财政补偿、政策补偿、技术补偿、项目补偿四个方面分析研究美国生态补偿机制与政策措施的经验,从而提出对中国农业面源污染控制的启示。重视激励促进作用,运用多种有效手段,构建监督执行机制,完善技术保障体系等对中国农业面源污染控制生态补偿机制与政策措施的建立和实施具有重要的现实意义。

关键词：农业面源污染生态补偿机制政策措施

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长江上中游水土保持工程建设成效与经验

人民长江 2010年第13期41卷 16-20页

作者：廖纯艳韩凤翔冯明汉长江水利委员会水土保持局湖北武汉430010 长江流域水土保持监测中心站湖北武汉430010

通过对金沙江下游、乌江流域、嘉陵江中下游、陕南陇南地区、三峡库区等22个典型县开展实地调研,阐述了"长治"工程治理前后的基本情况、实施布局、任务完成情况;总结了"长治"工程在扭转水土流失恶化趋势、改善生态环境、抢救和保护宝贵... 详细信息

通过对金沙江下游、乌江流域、嘉陵江中下游、陕南陇南地区、三峡库区等22个典型县开展实地调研,阐述了"长治"工程治理前后的基本情况、实施布局、任务完成情况;总结了"长治"工程在扭转水土流失恶化趋势、改善生态环境、抢救和保护宝贵耕地资源、改善治理区农业生产条件、稳步提高农民收入等方面的成效和成功经验。对指导今后长江流域水土保持生态工程的建设与发展具有十分重要的意义。

关键词：水土保持重点防治 “长治”工程长江上中游