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Study on water pressure characteristics of Xiamen Xiang’an Subsea Tunnel

Cheng Zhengming

Strategic Study of CAE 2012, Volume 14, Issue 11,   Pages 29-35

Abstract: Lining external water pressure formula under limited drainage was established, and it was also verifieddesign and programme of blocking water by grouting, following the principle plugging dominantly and limiteddrainage.

Keywords： subsea tunnel     lining     water pressure     model test     limited drainage     reduction    

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Combined reticular blind drainage and vertical hierarchical drainage system for landfills located in

Wenjing LU,Zhonge FU,Yan ZHAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 177-184 doi: 10.1007/s11783-014-0710-9

Abstract: A novel water control technology that combines the features of a reticular blind drainage system anda vertical hierarchical drainage system is developed and applied in the Yanziyan Sanitary Landfill, whichThe vertical hierarchical drainage system was installed to separate rainfall water and leachate in theand in the instant drainage of rainfall water.and reticular blind drainage systems.

Keywords： landfill     reticular blind drain     vertical hierarchical drain     guidance and drainage     impermeable layer    

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Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Frontiers of Medicine 2012, Volume 6, Issue 3,   Pages 332-337 doi: 10.1007/s11684-012-0212-8

Abstract:

Bedside limited echocardiography, or focused cardiac ultrasound, continues to gain popularity in many

Keywords： transesophageal echocardiography     curriculum     competency training     hemodynamic instability    

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Safety assessment for buried drainage box culvert under influence of underground connected aisle blasting

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 191-204 doi: 10.1007/s11709-022-0906-1

Abstract: in complex urban environments is considered to influence the safety and stability of the overlying drainageand the LS-DYNA software was used to analyze the dynamic response characteristics of an underground drainageThe vibration response evolution law of the buried drainage box culvert under blasting vibration wasinvestigated, and a safe surface control standard for the blast vibration of a drainage box culvert isThe peak particle velocity (PPV) and peak tensile stress (PTS) of the drainage box culvert decreased

Keywords： drainage box culvert     underpass blasting     dynamic response     numerical simulation     safety assessment    

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Design and evaluation of control strategies in urban drainage systems in Kunming city

Xin Dong, Senchen Huang, Siyu Zeng

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0968-9

Abstract: Real time control (RTC) of urban drainage systems (UDSs) is an important measure to reduce combined sewer

Keywords： Urban drainage system     Real time control     Static strategy     Constant strategy     Equal filling strategy    

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Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 123-125 doi: 10.15302/J-FASE-2017147

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Online recognition of drainage type based on UV-vis spectra and derivative neural network algorithm

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1430-6

Abstract:

• UV-vis absorption analyzer was applied in drainage type online recognition

Keywords： Drainage online recognition     UV-vis spectra     Derivative spectrum     Convolutional neural network    

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Substance flow analysis for an urban drainage system of a representative hypothetical city in China

Hua BAI, Siyu ZENG, Xin DONG, Jining CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 746-755 doi: 10.1007/s11783-013-0551-y

Abstract: discusses the use of substance flow analysis (SFA) as a tool to support quantified research on urban drainageIt is estimated that the annual flux of water, COD, TN and TP through the urban drainage system in 2010during the decade, resulting in a more than threefold increase in the input of substances into the urban drainageThanks to the development of urban drainage systems, the total loads of the city were maintained at a

Keywords： substance flow analysis (SFA)     urban drainage system     representative hypothetical city (RH city)     water    

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Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 111-117 doi: 10.1007/s11465-008-0020-7

Abstract: This paper presents the design process of a controller for bandwidth-limited active hydro-pneumatic suspensionSecond, a combined PID and fuzzy controller is designed for the bandwidth-limited active suspension system

Keywords： co-simulation technology     exchange interface     conventional     bandwidth-limited     algorithm    

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Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 368-374 doi: 10.15302/J-FEM-2017034

Abstract: This study addresses the problem of two-stage scheduling on batch and single machines with limited waiting

Keywords： batch machine     flow shop     makespan     limited waiting time    

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Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 313-320 doi: 10.15302/J-FASE-2019282

Abstract: Phosphate is a limited essential nutrient, however, with very uneven distribution worldwide.research training group “Adaptation of Chinese and German maize-based food-feed-energy systems to limitedThe interdisciplinary and complementary research is driven by the hypothesis that under phosphate limited

Keywords： international research training group     limited resources     maize     phosphate    

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radionuclide hepatobiliary scintigraphy in combination with determination of bilirubin from duodenal drainage

Sheng-Xuan LIU, Zhi-Hua HUANG

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 342-345 doi: 10.1007/s11684-010-0099-1

Abstract: ( Tc-EHIDA) hepatobiliary scintigraphy in combination with determination of bilirubin from duodenal drainage

Keywords： jaundice     radionuclide hepatobiliary scintigraphy     duodenal drainage    

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Non-convex sparse optimization-based impact force identification with limited vibration measurements

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0762-2

Abstract: Impact force identification is important for structure health monitoring especially in applications involving composite structures. Different from the traditional direct measurement method, the impact force identification technique is more cost effective and feasible because it only requires a few sensors to capture the system response and infer the information about the applied forces. This technique enables the acquisition of impact locations and time histories of forces, aiding in the rapid assessment of potentially damaged areas and the extent of the damage. As a typical inverse problem, impact force reconstruction and localization is a challenging task, which has led to the development of numerous methods aimed at obtaining stable solutions. The classical ℓ2 regularization method often struggles to generate sparse solutions. When solving the under-determined problem, ℓ2 regularization often identifies false forces in non-loaded regions, interfering with the accurate identification of the true impact locations. The popular ℓ1 sparse regularization, while promoting sparsity, underestimates the amplitude of impact forces, resulting in biased estimations. To alleviate such limitations, a novel non-convex sparse regularization method that uses the non-convex ℓ1−2 penalty, which is the difference of the ℓ1 and ℓ2 norms, as a regularizer, is proposed in this paper. The principle of alternating direction method of multipliers (ADMM) is introduced to tackle the non-convex model by facilitating the decomposition of the complex original problem into easily solvable subproblems. The proposed method named ℓ1−2-ADMM is applied to solve the impact force identification problem with unknown force locations, which can realize simultaneous impact localization and time history reconstruction with an under-determined, sparse sensor configuration. Simulations and experiments are performed on a composite plate to verify the identification accuracy and robustness with respect to the noise of the ℓ1−2-ADMM method. Results indicate that compared with other existing regularization methods, the ℓ1−2-ADMM method can simultaneously reconstruct and localize impact forces more accurately, facilitating sparser solutions, and yielding more accurate results.

Keywords： impact force identification     inverse problem     sparse regularization     under-determined condition     alternating direction method of multipliers    

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Life cycle cost savings analysis on traditional drainage systems from low impact development strategies

Pengfei ZHANG, Samuel T. ARIARATNAM

Frontiers of Engineering Management 2021, Volume 8, Issue 1,   Pages 88-97 doi: 10.1007/s42524-020-0063-y

Abstract: asphalt, concrete, or roofed structures and have increased surface impermeability and decreased natural drainageConventional drainage systems were built to mimic natural drainage patterns to prevent the occurrenceThese drainage systems consist of two major components: 1) a stormwater conduit system, and 2) a runoffThe construction of these drainage systems is costly and may cause significant environmental disturbancecosts (LCC) for a 50-year service life and 18.7% in LCC for a 25-year service life on the proposed drainage

Keywords： low impact development     traditional drainage system     hydraulic benefits     life-cycle cost    

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Pollutant reduction effectiveness of low-impact development drainage system in a campus

Shuhan Zhang, Yingying Meng, Jiao Pan, Jiangang Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0969-8

Abstract: Building a rainwater system based on the idea of low-impact development (LID) is an important aspect of the current “sponge city” construction in China. The “sponge city” concept emphasizes that the runoff can permeate the soil or be stored temporarily, and rainwater could be used again when it is needed. Beijing is one of the earliest cities to study rainwater harvesting and LID techniques in China. Through long-term monitoring of rainfall, runoff flow, and water quality of a campus demonstration project in Beijing, the runoff quantity and pollutant concentration variations have been analyzed. Furthermore, the runoff reduction effects of single LID measure, such as green roof, filtration chamber, and permeable pavement, have been investigated. Additionally, the overall reduction effectiveness of the LID system on the average annual rainfall runoff and pollution load has been discussed. Preliminary studies suggest that runoff pollutant concentration is positively correlated with the rainfall interval time, and the longer rainfall interval time leads to higher runoff pollutant concentrations. The very good outflow quality of the rainwater harvesting system could satisfy the reclaimed water quality standard for scenic entertainment use. The non-point-source pollution reduction effects of the LID system are obvious because the pollutants could be removed by filtration on the one hand and the pollution load could be reduced because of the significantly reduced outflow on the other hand.

Keywords： Low-impact development     Rainwater harvesting     Non-point-source pollution reduction     Campus    

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Title Author Date Type Operation

Study on water pressure characteristics of Xiamen Xiang’an Subsea Tunnel

Cheng Zhengming

Journal Article

Combined reticular blind drainage and vertical hierarchical drainage system for landfills located in

Wenjing LU,Zhonge FU,Yan ZHAO

Journal Article

Emergent limited perioperative transesophageal echocardiography: should new guidelines exist for limited

Yong G. Peng, Gregory M. Janelle

Journal Article

Safety assessment for buried drainage box culvert under influence of underground connected aisle blasting

Journal Article

Design and evaluation of control strategies in urban drainage systems in Kunming city

Xin Dong, Senchen Huang, Siyu Zeng

Journal Article

Highlights of special issue on ‘Agriculture in Water-Limited Areas’

Pute WU

Journal Article

Online recognition of drainage type based on UV-vis spectra and derivative neural network algorithm

Journal Article

Substance flow analysis for an urban drainage system of a representative hypothetical city in China

Hua BAI, Siyu ZENG, Xin DONG, Jining CHEN

Journal Article

Bandwidth-limited active suspension controller for an off-road vehicle based on co-simulation technology

FENG Jinzhi, ZHENG Songlin, YU Fan

Journal Article

Two-stage scheduling on batch and single machines with limited waiting time constraint

Zhongshun SHI, Zewen HUANG, Leyuan SHI

Journal Article

Adaptation of Chinese and German maize-based food-feed-energy systems to limited phosphate resources—a

Torsten MÜLLER, Fusuo ZHANG

Journal Article

radionuclide hepatobiliary scintigraphy in combination with determination of bilirubin from duodenal drainage

Sheng-Xuan LIU, Zhi-Hua HUANG

Journal Article

Non-convex sparse optimization-based impact force identification with limited vibration measurements

Journal Article

Life cycle cost savings analysis on traditional drainage systems from low impact development strategies

Pengfei ZHANG, Samuel T. ARIARATNAM

Journal Article

Pollutant reduction effectiveness of low-impact development drainage system in a campus

Shuhan Zhang, Yingying Meng, Jiao Pan, Jiangang Chen

Journal Article