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An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.

Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 494-505 doi: 10.1007/s11783-013-0609-x

Abstract: Multimedia environmental modeling is extremely complex due to the intricacy of the systems with the considerationTraditional environmental multimedia models (EMMs) are usually based on one-dimensional and first-orderIn this study, a new user-friendly fuzzy-set enhanced environmental multimedia modeling system (FEEMMSachieved through dynamically quantifying the intermedia mass flux; incorporating fuzzy-set approach into environmentalmultimedia modeling system (EMMS); and designing a user-friendly graphic user interface (GUI).

Keywords： environmental multimedia modelling     fuzzy-set approach     theoretical framework     environmental protection    

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An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.

Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1025-1035 doi: 10.1007/s11783-014-0655-z

Abstract: Part I of this study develops an enhanced environmental multimedia modeling system (EMMS) based on fuzzy-setOnce the model development is complete, the composite module and the entire modeling system need to beThe modules of EMMS could support the entire environmental multimedia modeling system.multimedia pollution problems and provide an extensive support for decision makers in managing the contaminatedenvironmental systems.

Keywords： environmental multimedia modelling system     fuzzy-set approach     application     model validation     uncertainty    

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Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2,   Pages 129-134 doi: 10.1007/s11465-016-0392-z

Abstract: equivalent modulus using nonlinear finite element analysis (FEA) to reflect coupled factors in affecting the modelling

Keywords： coupling factors     modelling accuracy     compliant mechanisms     equivalent modulus    

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Game theoretic analysis of environmental impact assessment system in China

CHENG Hongguang, PU Xiao, GONG Li, QI Ye

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 448-453 doi: 10.1007/s11783-007-0071-8

Abstract: Environmental impact assessment (EIA) system has been established in China since 1973.

Keywords： public     impact assessment     Environmental impact     general    

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Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 242-248 doi: 10.1007/s11465-014-0305-y

Abstract:

Rails endure frequent dynamic loads from the passing trains for supporting trains and guiding wheels. The accumulated stress concentrations will cause the plastic deformation of rail towards generating corrugations, contact fatigue cracks and also other defects, resulting in more dangerous status even the derailment risks. So the rail grinding technology has been invented with rotating grinding stones pressed on the rail with defects removal. Such rail grinding works are directed by experiences rather than scientifically guidance, lacking of flexible and scientific operating methods. With grinding control unit holding the grinding stones, the rail grinding process has the characteristics not only the surface grinding but also the running railway vehicles. First of all, it’s important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones. Moreover, it’s needed to build up models of railway vehicle unit bonded with the grinding stone to represent the rail grinding car. Therefore the theoretical model for contact length is developed based on the geometrical analysis. And the calculating models are improved considering the grinding car’s dynamic behaviors during the grinding process. Eventually, results are obtained based on the models by taking both the operation parameters and the structure parameters into the calculation, which are suitable for revealing the process of rail grinding by combining the grinding mechanism and the railway vehicle systems.

Keywords： rail grinding     contact length     dynamic model     Hamiltonian system     grinding stone     rail grinding car    

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A brief review on key technologies in the battery management system of electric vehicles

Kailong LIU, Kang LI, Qiao PENG, Cheng ZHANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1,   Pages 47-64 doi: 10.1007/s11465-018-0516-8

Abstract: , such as electric vehicles (EVs) and hybrid electric vehicles, where a suitable battery management systemThis paper aims to give a brief review on several key technologies of BMS, including battery modelling

Keywords： battery management system     battery modelling     battery state estimation     battery charging    

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Development of environmental management system in China's financial sector

CHANG Miao, PENG Lijuan, WANG Shiwen

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 172-177 doi: 10.1007/s11783-008-0032-x

Abstract: The establishment of the environmental management system in the financial sector can be effectively promotedThe impact of a sustainable development system on the sector is analyzed in this article from three aspects: environmental risk assessment, financing support for environmental protection projects, and financialInfluential factors on the development of the environmental management system in China’s financial sectorsystem in the Chinese financial sector.

Keywords： perspective     s financial     financial     ’ s     transitional    

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Dynamic simulation of urban water metabolism under water environmental carrying capacity restrictions

Weihua ZENG,Bo WU,Ying CHAI

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 114-128 doi: 10.1007/s11783-014-0669-6

Abstract: Feedback loops can be analyzed to increase the water environmental carrying capacity (WECC) of the newurban water metabolism system (UWMS) over that of a traditional UWMS.An analysis of the feedback loops of an UWMS was used to construct a system dynamics (SD) model for thesystem under a WECC restriction.the current sewage treatment facilities, using reclaimed water and improving the water circulation system

Keywords： urban water metabolism system (UWMS)     system dynamic simulation     water environmental carrying capacity    

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3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 165-175 doi: 10.1007/s11709-018-0484-4

Abstract: In this manuscript, we study fracture of prestressed cylindrical concrete pipes. Such concrete pipes play a major role in tunneling and underground engineering. The structure is modelled fully in 3D using three-dimensional continuum elements for the concrete structure which beam elements are employed to model the reinforcement. This allows the method to capture important phenomena compared to a pure shell model of concrete. A continuous approach to fracture is chosen when concrete is subjected to compressive loading while a combined continuous-discrete fracture method is employed in tension. The model is validated through comparisons with experimental data.

Keywords： cylindrical concrete structures     limit state analysis     3D fracture modelling     prestressed composite pipes    

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Producing more with less: reducing environmental impacts through an integrated soil-crop system management

Zhenling CUI, Zhengxia DOU, Hao YING, Fusuo ZHANG

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 1,   Pages 14-20 doi: 10.15302/J-FASE-2019295

Abstract:

Balancing crop productivity with resource use efficiency and beneficial environmental consequencesAn innovative approach, Integrated Soil-Crop System Management (ISSM), for producing more grain withgreater nutrient use efficiencies and less environmental pollution is presented.yields of maize, rice and wheat while simultaneously increasing nitrogen use efficiency and reducing environmental

Keywords： China     environmental protection     food security     high-yielding     nitrogen management    

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Fault Modelling and Simulation of Satellite Thermal Control System

Li Yunze,Wei Chuanfeng,Yuan Lingshuang,Wang Jun

Strategic Study of CAE 2005, Volume 7, Issue 1,   Pages 38-40

Abstract:

In order to master the satellite temperature change caused by thermal control system faults more easilyand roundly, satellite thermal control system faults were sort into three basal classes： thermal resistanceprovides a mathematical model and simulation method for fault diagnosis and fault-tolerant control system

Keywords： satellite     thermal control system     fault simulation    

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ANN-based empirical modelling of pile behaviour under static compressive loading

Abdussamad ISMAIL

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 594-608 doi: 10.1007/s11709-017-0446-2

Abstract: Artificial neural networks have been widely used over the past two decades to successfully develop empirical models for a variety of geotechnical problems. In this paper, an empirical model based on the product-unit neural network (PUNN) is developed to predict the load-deformation behaviour of piles based SPT values of the supporting soil. Other parameters used as inputs include particle grading, pile geometry, method of installation as well as the elastic modulus of the pile material. The model is trained using full-scale pile loading tests data retrieved from FHWA deep foundations database. From the results obtained, it is observed that the proposed model gives a better simulation of pile load-deformation curves compared to the Fleming’s hyperbolic model and t-z approach.

Keywords： piles in compression     load-deformation behaviour     product-unit neural network    

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Optimizing environmental insulation thickness of buildings with CHP-based district heating system based

Yumei ZHANG, Pengfei JIE, Chunhua LIU, Jing LI

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 613-628 doi: 10.1007/s11708-020-0700-5

Abstract: A mathematical model on the optimum environmental insulation thickness (OEIT) for minimizing the annualtotal environmental impact was established based on the amount of energy and energy grade reduction.conducted based on a residential community with a combined heat and power (CHP)-based district heating systemmaterials (i.e., expanded polystyrene, rock wool and glass wool) on the OEIT and minimum annual total environmentalWhen the OEIT of expanded polystyrene, rock wool and glass wool is used, the annual total environmental

Keywords： optimum environmental insulation thickness     heat medium temperature     energy grade     extracted heat     exhaust    

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Kinetic-compartmental modelling of potassium-containing cellulose feedstock gasification

Attila Egedy, Lívia Gyurik, Tamás Varga, Jun Zou, Norbert Miskolczi, Haiping Yang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 708-717 doi: 10.1007/s11705-018-1767-y

Abstract:

Biomass is of growing interest as a secondary energy source and can be converted to fuels with higher energy density especially by pyrolysis or gasification. Understanding the mechanism and the kinetics of biomass pyrolysis (thermal decomposition) and gasification (conversion of organic material to gases) could be the key to the design of industrial devices capable of processing vast amounts of biomass feedstock. In our work real product components obtained in pyrolysis were took into consideration as well as char and oil as lumped components, and the kinetic constants for a biomass model compound (cellulose) pyrolysis and gasification were identified based on a proposed simplified reaction mechanism within a compartment model structure. A laboratory scale reactor was used for the physical experiments containing consecutive fast pyrolysis and gasification stages using alkali metal (K) containing feedstock, which has a significant effect on the cellulose pyrolysis and gasification. The detailed model was implemented in MATLAB/Simulink environment, and the unknown kinetic parameters were identified based on experimental data. The model was validated based on measurement data, and a good agreement was found. Based on the validated first principle model the optimal parameters were determined as 0.15 mL/min steam flow rate, and 4% K content.

Keywords： biomass pyrolysis     kinetic parameter identification     compartment modelling     optimisation    

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A model for the evaluation of environmental impact indicators for a sustainable maritime transportation

Lizzette Pérez LESPIER, Suzanna LONG, Tom SHOBERG, Steven CORNS

Frontiers of Engineering Management 2019, Volume 6, Issue 3,   Pages 368-383 doi: 10.1007/s42524-019-0004-9

Abstract: However, this process also causes negative environmental and societal impacts.Therefore, environmental sustainability is a pressing issue for maritime shipping management, given theindicators within the transportation system.Such a model will help decision-makers to achieve the goals of improved environmental sustainability.that can evaluate tradeoffs within the system and identify possible alternatives to mitigate detrimental

Keywords： Environmental sustainability     maritime transportation system     environmental impact indicators     fuzzy analytic    

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Title Author Date Type Operation

An enhanced environmental multimedia modeling system based on fuzzy-set approach: I.

Chesheng ZHAN,Rongrong ZHANG,Xiaomeng SONG,Baolin LIU

Journal Article

An enhanced environmental multimedia modeling system based on fuzzy-set approach: II.

Rongrong ZHANG,Chesheng ZHAN,Xiaomeng SONG,Baolin LIU

Journal Article

Understanding coupled factors that affect the modelling accuracy of typical planar compliant mechanisms

Guangbo HAO,Haiyang LI,Suzen KEMALCAN,Guimin CHEN,Jingjun YU

Journal Article

Game theoretic analysis of environmental impact assessment system in China

CHENG Hongguang, PU Xiao, GONG Li, QI Ye

Journal Article

Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Journal Article

A brief review on key technologies in the battery management system of electric vehicles

Kailong LIU, Kang LI, Qiao PENG, Cheng ZHANG

Journal Article

Development of environmental management system in China's financial sector

CHANG Miao, PENG Lijuan, WANG Shiwen

Journal Article

Dynamic simulation of urban water metabolism under water environmental carrying capacity restrictions

Weihua ZENG,Bo WU,Ying CHAI

Journal Article

3D fracture modelling and limit state analysis of prestressed composite concrete pipes

Pengfei HE, Yang SHEN, Yun GU, Pangyong SHEN

Journal Article

Producing more with less: reducing environmental impacts through an integrated soil-crop system management

Zhenling CUI, Zhengxia DOU, Hao YING, Fusuo ZHANG

Journal Article

Fault Modelling and Simulation of Satellite Thermal Control System

Li Yunze,Wei Chuanfeng,Yuan Lingshuang,Wang Jun

Journal Article

ANN-based empirical modelling of pile behaviour under static compressive loading

Abdussamad ISMAIL

Journal Article

Optimizing environmental insulation thickness of buildings with CHP-based district heating system based

Yumei ZHANG, Pengfei JIE, Chunhua LIU, Jing LI

Journal Article

Kinetic-compartmental modelling of potassium-containing cellulose feedstock gasification

Attila Egedy, Lívia Gyurik, Tamás Varga, Jun Zou, Norbert Miskolczi, Haiping Yang

Journal Article

A model for the evaluation of environmental impact indicators for a sustainable maritime transportation

Lizzette Pérez LESPIER, Suzanna LONG, Tom SHOBERG, Steven CORNS

Journal Article