Zhengwei Pan

ORCID: 0000-0002-4243-1920
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About
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Research Areas
  • Research studies in Vietnam
  • Water resources management and optimization
  • Water Resources and Sustainability
  • Hydrology and Watershed Management Studies
  • Advanced Decision-Making Techniques
  • Evaluation Methods in Various Fields
  • Safety and Risk Management
  • Hydrological Forecasting Using AI
  • Evaluation and Optimization Models
  • Geotechnical Engineering and Soil Stabilization
  • Flood Risk Assessment and Management
  • Water Quality Monitoring Technologies
  • Nuclear Materials and Properties
  • Climate variability and models
  • Groundwater flow and contamination studies
  • Advanced oxidation water treatment
  • Environmental Quality and Pollution
  • Energetic Materials and Combustion
  • Metal and Thin Film Mechanics
  • Geotechnical Engineering and Soil Mechanics
  • Copper Interconnects and Reliability
  • Grey System Theory Applications
  • Time Series Analysis and Forecasting
  • Efficiency Analysis Using DEA
  • Guidance and Control Systems

Bengbu Medical College
2020-2024

Bengbu University
2020-2024

Anhui Xinhua University
2013-2017

Hefei University of Technology
2009-2010

Hohai University
2009

Abstract Data envelopment analysis (DEA) is a linear programming and production theory-based nonparametric approach that generally used for efficiency analysis. Older DEA models, such CCR BCC, can only identify decision-making units (DMUs) efficient or inefficient. The super-efficiency model enables DMUs to be ranked. A change in measured using Malmquist index model, the productivity decomposed multiplicatively into an efficiency-change component (Effch) technical (Techch). This paper...

10.1007/s13201-020-01223-1 article EN cc-by Applied Water Science 2020-05-18

As a new development form for evaluating the regional water resources carrying capacity, forewarning of their capacities is an important adjustment and control measure security management. Up to now, most research on this issue have been qualitative analyses, with lack quantitative research. For reason, index system grade standards, has established in Anhui Province, China, paper. Subjective weights indices can be calculated using fuzzy analytic hierarchy process, based accelerating genetic...

10.3390/e19110574 article EN cc-by Entropy 2017-10-25

As an important indicator for assessing regional water resources, the study of spatiotemporal evolution and driving factors resources carrying capacity (WRCC) is essential achieving sustainable resource utilization. This focuses on Yulin City, a typical arid region located Loess Plateau in northwestern China. By constructing evaluation index system WRCC combining improved fuzzy comprehensive model with TOPSIS model, established. Additionally, Geodetector used to explore main behind WRCC....

10.3390/w16152142 article EN Water 2024-07-29

This paper establishes a water resources vulnerability framework based on sensitivity, natural resilience and artificial adaptation, through the analyses of four states system its accompanying transformation processes. Furthermore, it proposes an analysis method for connection entropy, which extends concept contact entropy. An example is given in Anhui Province China, illustrates that, overall, levels fluctuated showed apparent improvement trends from 2001 to 2015. Some suggestions are also...

10.3390/e19110591 article EN cc-by Entropy 2017-11-06

Mn-substituted FeOOH with different Mn/(Mn + Fe) molar ratios are synthesized, and characterized using FESEM, XRD, FTIR, ICP-OES, BET, Zeta potential, TG-DSC, XPS, VSM. The results show that the actual doping amounts of Mn 0%, 3.05%, 6.13%, 9.04%, 12.70%, 15.14%, respectively. substitution promotes transformation goethite from to MnFe2O4, resulting in a saturation magnetization intensity up 14.90 emu/g for G-Mn15%, laying theoretical foundation magnetic recovery. specific surface area...

10.3390/w16131795 article EN Water 2024-06-25

The flood disaster is one of the most serious natural disasters. It important basis making plan for control to assess losses accurately. results common assessment methods are discrete values and low resolution which applied widely at present. research more precise, intuitive method loss evaluation focus. set pair analysis model was established by alpha-cut triangle fuzzy number <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">A</i>...

10.1109/ccdc.2009.5192608 article EN Chinese Control and Decision Conference 2009-06-01

Long-term hydrological forecasting based on sea surface temperature (SST) fields faces the large p and small n problem, i.e., too many potential predictors a limited number of samples. Considering selection will also enhance complexity models lead to overfitting, in this study, two strategies are used for building long-term streamflow forecasting. The first strategy is downsample SST field optimize its spatial resolution; second shrink model coefficients L1 regularization. We build...

10.1061/jhyeff.heeng-5864 article EN Journal of Hydrologic Engineering 2023-02-09

Horizontal resistance can be significantly different for gravelly soil slope sites with gradients. The impact of gradient on the horizontal based a three-dimensional physical simulation test has been investigated, and displacement pile top pressure four piles under various gradients (slope 0–45°) was analyzed. research reveals that ① exhibits linear increase stage, non-linear steep gradually stabilizing stage in load. ② ultimate is affected by depth displacement, hyperbolic variation...

10.3390/buildings14113346 article EN cc-by Buildings 2024-10-23

Benefit and loss matrix of uncertain decision-making analysis reflects both the objective information structure problem risk benefit chance faced by decision-maker. The transform vector consisted natural state weights is quantitative expression rule adopted essential for resolving how to into compressed real with one dimension, where biggest weight corresponds best action scheme. Now has been not mined sufficiently using common methods problems. Therefore in this paper, whole difference...

10.1109/ccdc.2009.5192192 article EN Chinese Control and Decision Conference 2009-06-01

10.1080/10042857.2013.777522 article EN Chinese Journal of Population Resources and Environment 2013-06-01

Abstract A high-efficient and stable catalyst is highly desired to catalyze ozone for refractory organic pollutants removal. In this work, Mn-Ce bimetallic oxide loaded CNT@Fe 3 C (Mn 0.7 Ce 0.3 O x /CNT@Fe C) was synthesized with Mn as the active component magnetic support. The catalytic performance of towards ozonation evaluated. TOC removal efficiency phenol degradation after 45 min reaction 98%, which 1.5 times 1.8 that monometallic CeO 2 (65%) y (54%), respectively. synthesized-Mn...

10.1088/2053-1591/aca8ea article EN cc-by Materials Research Express 2022-12-01

Abstract The water resources system is in a vulnerable situation because of the influence climate change and changing environment. adaptation mechanism was discussed through analysis process passive response, even active adjustment under adaptability can be described as natural resilience (NR) artificial (AA) social (artificial) system. indexes were identified analyzed from aspects quantity, quality ecology. resource, eco-environment, socio-economic technical factors. On this basis, index...

10.2166/ws.2020.358 article EN cc-by Water Science & Technology Water Supply 2020-12-09

Abstract Using groundwater for crop growth plays a key role in the sustainable management of water resources and irrigation drainage design. Some studies did not consider influence different stages non-linear effect depth on use. In this study, three types formulae use were developed by referencing phreatic evaporation formula without crops. According to observation data, use, wheat evapotranspiration fitted using these each stage. The Accelerated Gene Algorithm (AGA) was used optimize...

10.2166/ws.2022.266 article EN cc-by Water Science & Technology Water Supply 2022-07-14
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