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System engineering for water pollution control at the watershed level in China

Wei MENG,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4,   Pages 443-452 doi: 10.1007/s11783-009-0037-0

Abstract: The present water pollution situation at watershed level in China has been systematically analyzed.The problems of water pollution control at watershed level include a lack of thought and approach, developmentalFrom 2006 to 2020, water pollution control and governance will be a national key specific project ofThe strategies of this project include establishing a water pollution control system at watershed levelenvironmental pollution control, potable water safety, and water environmental management.

Keywords： water pollution control     watershed     system engineering     sustainability     integrated watershed management     key    

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Three-dimensional fluorescence spectral characterization of soil dissolved organic matters in the fluctuating water-level

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 426-434 doi: 10.1007/s11783-010-0264-4

Abstract: spectroscopy was used to investigate the fluorescent properties of soil dissolved organic matter (DOM) in the water-level-fluctuationA and B, the fluorescence intensities of peaks C and D were strongly influenced by the fluctuating waterlevel.

Keywords： water-level-fluctuation zone (WLFZ)     soil     dissolved organic matter (DOM)     three-dimensional fluorescence    

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Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation

Zhengsheng Lu, Moran Wang, Mingkai Zhang, Ji Li, Ying Xu, Hanchang Shi, Yanchen Liu, Xia Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1222-4

Abstract: A dynamic discrete control based on the water level was developed.level variations, which can be realized only based on the programmable logic controller (PLC) systemA discretized water level control model was developed to conduct the real-time control based on data-automationThe discretized water level control method can regulate dynamic wastewater pumping flow of pumps followingthe dynamic water level variation in the sewer system.

Keywords： Sewer system     Integrated control     Discrete control     Water level    

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Probabilistic stability analysis of Bazimen landslide with monitored rainfall data and water level fluctuations

Wengang ZHANG, Libin TANG, Hongrui LI, Lin WANG, Longfei CHENG, Tingqiang ZHOU, Xiang CHEN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1247-1261 doi: 10.1007/s11709-020-0655-y

Abstract: It is widely accepted that rainfall and periodic variation of water level are the two main factors triggeringThe results indicate that the fluctuation of the reservoir water level plays a pivotal role in inducingslope failures, for the minimum stability coefficient occurs at the rapid decline period of water level

Keywords： reliability analysis     Bazimen landslide     rainfall     reservoir water level     slope stability    

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New insights into the formation of ammonium nitrate from a physical and chemical level perspective

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1737-6

Abstract:

● Factor analysis of ammonium nitrate formation based on thermodynamic theory.

Keywords： Ammonium nitrate formation     Thermodynamic theory     Aerosol liquid water content     Source apportionment    

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TRADE-OFFS IN THE DESIGN OF SUSTAINABLE CROPPING SYSTEMS AT A REGIONAL LEVEL: A CASE STUDY ON THE NORTH

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 2,   Pages 295-308 doi: 10.15302/J-FASE-2021434

Abstract: progressively homogenized and intensified with increasing rates of inputs such as fertilizers, pesticides and waterresulted in higher crop productivity but also a high environmental burden due to increased pollution and waterhow 30 different crop rotations practiced in the North China Plain could be combined at the regional leveltrade-offs between objectives of maximizing productivity and profitability versus minimizing ground waterwas concluded that a holistic analysis of the potential of a diversity cropping systems at a regional level

Keywords： crop rotation / food security / multi-objective optimization / water use    

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Impact of the Three Gorges Project on the Water Level and Navigation Channel in the Near-dam Reach Downstream

Lu Yongjun ,Chen Zhicong,Zhao lianbai ,Shao Xuejun,Yang Meiqing,Li Yunzhong

Strategic Study of CAE 2002, Volume 4, Issue 10,   Pages 67-72

Abstract:

The river channel change, the bed load and bed material armoring, and the water level lowering afterThe water level lowering and it's impact on navigation in the period of construction and initial

Keywords： Gezhouba project     Three Gorges project     erosion     water level lowering     navigation lock and navigation channel    

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Analysis of influencing factors of groundwater level variation at Donglutian coal industrial ground of

Lin Dujun,Gong Shoucai,Zhang Yinzhou

Strategic Study of CAE 2012, Volume 14, Issue 2,   Pages 49-53

Abstract: for three-dimensional flow numerical model , The author analyzed influencing factor of variation in waterlevel at Donglutian coal industrial ground by the parameter sensitivity analysis method.The results showed that there are several factors influence the change of ground-water level by fillingAll of these approaches were to control the rise of ground water lever.

Keywords： numerical model     variation in ground water level     influencing factors     sensitivity analysis    

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Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 114-120 doi: 10.1007/s11709-014-0267-5

Abstract: critical examination of existing random field models of heterogeneous two-phase media with emphasis on level-cutThe case of random level sets, often used to represent the geometry of physical systems, is also examined

Keywords： microstructure     random fields     level sets     shape recovery     two-phase media    

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The effect of sea level rise on beach morphology of caspian sea coast

M. A. Lashteh NESHAEI, F. GHANBARPOUR

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 369-379 doi: 10.1007/s11709-017-0398-6

Abstract: Bed level elevations are measured and compared with the theoretical equilibrium profile.In the next stage, following extensive investigations, the bed level changes due to arise in sea levelThe mechanism of beach re-treatment due to a rise in sea level is considered based on the simplifiedComparison of the equilibrium profiles for different cases of sea level rise, clearly shows that becauseof the sediment transport induced by the fluctuation of the water level, the beach profile in the surf

Keywords： wave     coastal zone     beach morphology     evolution     equilibrium profile     sea level rise    

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Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 390-405 doi: 10.1007/s11465-020-0588-0

Abstract: The level set method (LSM), which is transplanted from the computer graphics field, has been successfullyIn this study, a level set band method is proposed to overcome this drawback in handling topology changesin the level set framework.improve the continuity of objective and constraint functions by incorporating one parameter, namely, levelThe proposed method demonstrates a flexible topology change by applying a certain size of the level set

Keywords： level set method     topology optimization     density-based method     level set band    

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Research on the key technology of level pre-assembly of steel tower segments

Zhang Yongli,Gu Bifeng

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 48-52

Abstract:

In this paper, we researched the key technology of the level pre-assemblyLevel pre-assembly of steel tower fills the technology gaps in China and provides a strong basis for

Keywords： steel tower     level pre-assembly     support control     apply level force    

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Two-level uncapacitated lot-sizing problem considering the financing cost of working capital requirement

Yuan BIAN, David LEMOINE, Thomas G. YEUNG, Nathalie BOSTEL

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 248-258 doi: 10.1007/s42524-019-0069-5

Abstract: However, in literatures related to lot-sizing problem, WCR has only been studied in the single-levelIn this paper, we initially adopt WCR model for a multi-level case.A two-level (supplier–customer) model is established on the basis of the classic multi-level lot-sizingTo tackle this problem, we propose sequential and centralized approaches to solve the two-level case

Keywords： two-level ULS problem     lot-sizing     working capital requirement     ZIO property     infinite production capacity    

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Understanding the demand predictability of bike share systems: A station-level analysis

Frontiers of Engineering Management   Pages 551-565 doi: 10.1007/s42524-023-0279-8

Abstract: Divvy bike-share one-year data from Chicago, USA, we measured demand entropy and quantified the station-levelLastly, we identified that key factors contributing to station-level entropy and predictability includeBSS demand prediction, which can help decision makers and system operators anticipate diverse station-level

Keywords： bike share systems     demand prediction     prediction errors     machine learning     entropy    

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A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Strategic Study of CAE 2011, Volume 13, Issue 12,   Pages 63-67

Abstract:

In thermally stratified reservoir, a multi-level intake structure isusually adopted in hydropower station to reduce the negative effect of releasing lower-temperature waterAnd a simple and practical formula of water temperature released is need.A prediction formula of water temperature released is put forward based on the experimental data.The formula is validated by the experimental results of water temperature released from the intakes of

Keywords： thermally stratified reservoir     hydropower station intake     stop-log gate     formula of water temperature    

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Title Author Date Type Operation

System engineering for water pollution control at the watershed level in China

Wei MENG,

Journal Article

Three-dimensional fluorescence spectral characterization of soil dissolved organic matters in the fluctuating water-level

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Journal Article

Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation

Zhengsheng Lu, Moran Wang, Mingkai Zhang, Ji Li, Ying Xu, Hanchang Shi, Yanchen Liu, Xia Huang

Journal Article

Probabilistic stability analysis of Bazimen landslide with monitored rainfall data and water level fluctuations

Wengang ZHANG, Libin TANG, Hongrui LI, Lin WANG, Longfei CHENG, Tingqiang ZHOU, Xiang CHEN

Journal Article

New insights into the formation of ammonium nitrate from a physical and chemical level perspective

Journal Article

TRADE-OFFS IN THE DESIGN OF SUSTAINABLE CROPPING SYSTEMS AT A REGIONAL LEVEL: A CASE STUDY ON THE NORTH

Journal Article

Impact of the Three Gorges Project on the Water Level and Navigation Channel in the Near-dam Reach Downstream

Lu Yongjun ,Chen Zhicong,Zhao lianbai ,Shao Xuejun,Yang Meiqing,Li Yunzhong

Journal Article

Analysis of influencing factors of groundwater level variation at Donglutian coal industrial ground of

Lin Dujun,Gong Shoucai,Zhang Yinzhou

Journal Article

Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Journal Article

The effect of sea level rise on beach morphology of caspian sea coast

M. A. Lashteh NESHAEI, F. GHANBARPOUR

Journal Article

Level set band method: A combination of density-based and level set methods for the topology optimization

Peng WEI, Wenwen WANG, Yang YANG, Michael Yu WANG

Journal Article

Research on the key technology of level pre-assembly of steel tower segments

Zhang Yongli,Gu Bifeng

Journal Article

Two-level uncapacitated lot-sizing problem considering the financing cost of working capital requirement

Yuan BIAN, David LEMOINE, Thomas G. YEUNG, Nathalie BOSTEL

Journal Article

Understanding the demand predictability of bike share systems: A station-level analysis

Journal Article

A prediction formula of water temperature released from the multi-level stop-log gate intake of hydropower

Gao Xueping,Chen Hong,Song Huifang

Journal Article