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Robust energy-efficient train speed profile optimization in a scenario-based position–time–speed network

Frontiers of Engineering Management 2021, Volume 8, Issue 4,   Pages 595-614 doi: 10.1007/s42524-021-0173-1

Abstract: Specifically, we first construct a scenario-based position–time–speed (PTS) network by considering resistanceparameters as discrete scenario-based random variables., a percentile reliability model is proposed to generate a robust train speed profile, by which the scenario-based

Keywords： robust train speed profile     percentile reliability model     scenario-based position–time–speed network    

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Current scenario and challenges of plastic pollution in Bangladesh: a focus on farmlands and terrestrial

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1666-4

Abstract:

● A global snapshot of plastic waste generation and disposal is analysed.

Keywords： Plastic waste     Farmlands     Terrestrial ecosystem     Marine life    

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Scenario analysis of the energy demand and CO

Jihong ZHANG, Jian ZHOU, Guangping HU, Tianhou ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 459-468 doi: 10.1007/s11708-010-0119-5

Abstract: Results show that in the high motorization-oriented pattern scenario, total energy demand is about 13.94%higher, and the average CO abatement per year is 3.38 million tons less than in the reference scenarioOn the other hand, in the bus and rail transit-oriented scenario, total energy demand is about 11.57%less, and the average CO abatement is 2.8 million tons more than in the reference scenario.

Keywords： scenario analysis     urban traffic pattern     energy demand     reduction potential    

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Vanadium metabolism investigation using substance flow and scenario analysis

Fangfang ZHANG, Huiquan LI, Bo CHEN, Xue GUAN, Yi ZHANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 256-266 doi: 10.1007/s11783-013-0585-1

Abstract: This study conducts accounting and scenario analysis on the life cycle of vanadium metabolism in ChinaA scenario analysis was conducted to analyze the future developmental trend of vanadium metabolism inThe scenario analysis indicates that the next 20 years is a critical period for the vanadium industry

Keywords： metabolism     vanadium industry     substance flow analysis     scenario analysis    

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Scenario-based assessment and multi-objective optimization of urban development plan with carrying capacity

Yilei Lu, Yunqing Huang, Siyu Zeng, Can Wang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1200-x

Abstract: Impact of urban development on water system is assessed with carrying capacity. Impacts on both water resource quantity and environmental quality are involved. Multi-objective optimization revealing system trade-off facilitate the regulation. Efficiency, scale and structure of urban development are regulated in two stages. A roadmap approaching more sustainable development is provided for the case city. Environmental impact assessments and subsequent regulation measures of urban development plans are critical to human progress toward sustainability, since these plans set the scale and structure targets of future socioeconomic development. A three-step methodology for assessing and optimizing an urban development plan focusing on its impacts on the water system was developed. The methodology first predicted the pressure on the water system caused by implementation of the plan under distinct scenarios, then compared the pressure with the carrying capacity threshold to verify the system status; finally, a multi-objective optimization method was used to propose regulation solutions. The methodology enabled evaluation of the water system carrying state, taking socioeconomic development uncertainties into account, and multiple sets of improvement measures under different decisionmaker preferences were generated. The methodology was applied in the case of Zhoushan city in South-east China. The assessment results showed that overloading problems occurred in 11 out of the 13 zones in Zhoushan, with the potential pressure varying from 1.1 to 18.3 times the carrying capacity. As a basic regulation measure, an environmental efficiency upgrade could relieve the overloading in 4 zones and reduce 9%‒63% of the pressure. The optimization of industrial development showed that the pressure could be controlled under the carrying capacity threshold if the planned scale was reduced by 24% and the industrial structure was transformed. Various regulation schemes including a more suitable scale and structure with necessary efficiency standards are provided for decisionmakers that can help the case city approach a more sustainable development pattern.

Keywords： Urban development plan     Urban water system     Carrying capacity     Scenario analysis     Multi-objective optimization    

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Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 255-265 doi: 10.1007/s11783-010-0279-x

Abstract: Based on the results of the scenario analysis, a river rehabilitation scheme was recommended for implementation

Keywords： peri-urban river     coupled hydrodynamic-water quality modeling     scenario analysis     river rehabilitation    

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China’s pre-2020 CO

Hailin WANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 571-578 doi: 10.1007/s11708-019-0640-0

Abstract: in 2020 and its influences on achieving National Determined Contribution (NDC) target in 2030 with scenario

Keywords： China’s National Determined Contribution     emission reduction potential     scenario analysis     CO2   

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Modeling and simulation of industrial water demand of Beijing municipality in China

Shouke WEI, Shafi Noor ISLAM, Alin LEI,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 1,   Pages 91-101 doi: 10.1007/s11783-010-0007-6

Abstract: Results from simulated scenario illustrated that, due to the extreme water scarcity situation, industryin Beijing would still face a serious water deficit problem even with a very optimistic scenario for

Keywords： water scarcity     water demand     water deficit     modeling     industry     scenario     Beijing    

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Ranking of design scenarios of TMD for seismically excited structures using TOPSIS

Sadegh ETEDALI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1372-1386 doi: 10.1007/s11709-020-0671-y

Abstract: Simulation results indicate that the minimization of the maximum story displacement is the optimum design scenario

Keywords： seismic-excited building     TMD     optimum design     PSO     design scenario     TOPSIS    

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Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 13-17 doi: 10.1007/s11783-007-0002-8

Abstract: between the emission factor corresponding to the actual situation in 2004 and that corresponding to the scenario

Keywords： GIS     difference     capacity     scenario     implementation    

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Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 378-390 doi: 10.1007/s11783-011-0357-8

Abstract: decrease distinctly by 34.0%, 53.2%, 78.3%, 47.0%, and 30.6% respectively in the most coal-intensive scenariofurther, but slightly by 1.7%, 4.5%, 11.4%, 13.5%, and 8.8% respectively in the least coal-intensive scenarioHowever, the CO emission is 10.0% lower in the least coal-intensive scenario than in the most coal-intensive

Keywords： Beijing     energy structure adjustment     air quality     Community Multiscale Air Quality Model (CMAQ)     scenario    

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Exploring price effects on the residential water conservation technology diffusion process: a case study of Tianjin city

Junying CHU, Hao WANG, Can WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 5,   Pages 688-698 doi: 10.1007/s11783-013-0559-3

Abstract: long-term perspective (from year 2011 to 2030) are considered, including BAU (Business As Usual), SP1 (Scenarioof Price increase with constant annual rate), SP2 (Scenario of Price increase every four years) andSP3 (Scenario of Price increase with affordable constraint), considering many factors such as historicshow that on aggregate 2.3%, 11.0% and 18.2% of fresh water can be saved in the residential sector in scenarioSP1, SP2 and SP3, respectively, compared with the BAU scenario in the year 2030.

Keywords： technology selection     model optimization     water price     scenario analysis     consumer behavior    

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Managing obsolescence of embedded hardware and software in secure and trusted systems

Zachary A. COLLIER, James H. LAMBERT

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 172-181 doi: 10.1007/s42524-019-0032-5

Abstract: Obsolescence of integrated systems which contain hardware and software is a problem that affects multiple industries and can occur for many reasons, including technological, economic, organizational, and social factors. It is especially acute in products and systems that have long life cycles, where a high rate of technological innovation of the subcomponents result in a mismatch in life cycles between the components and the systems. While several approaches for obsolescence forecasting exist, they often require data that may not be available. This paper describes an approach using non-probabilistic scenarios coupled with decision analysis to investigate how particular scenarios influence priority setting for products and systems. Scenarios are generated from a list of emergent and future conditions related to obsolescence. The key result is an identification of the most and least disruptive scenarios to the decision maker’s priorities. An example is presented related to the selection of technologies for energy islanding, which demonstrates the methodology using six obsolescence scenarios. The paper should be of broad interest to scholars and practitioners engaged with enterprise risk management and similar challenges of large-scale systems.

Keywords： enterprise risk management     diminishing manufacturing sources and material shortages     scenario-based preferences    

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The general planning scenarios of electromagnetic rail launch system

Zhai Lipeng, Feng Junwen, Wang Huating, Bai Ju

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 45-50

Abstract: paper discusses the general developmental strategy of electromagnetic rail launch system based on the scenario

Keywords： electromagnetic rail launch system     scenario planning     development strategy    

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Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed to fire

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 609-628 doi: 10.1007/s11709-018-0452-z

Abstract: In this paper, thermal fluid structure-interaction (TFSI) and coupled thermal-stress analysis are utilized to identify the effects of transient and steady-state heat-transfer on the vortex induced vibration and fatigue of a segmental bridge deck due to fire incidents. Numerical simulations of TFSI models of the deck are dedicated to calculate the lift and drag forces in addition to determining the lock-in regions once using fluid-structure interaction (FSI) models and another using TFSI models. Vorticity and thermal convection fields of three fire scenarios are simulated and analyzed. Simiu and Scanlan benchmark is used to validate the TFSI models, where a good agreement was manifested between the two results. Extended finite element method (XFEM) is adopted to create 3D models of the cable stayed bridge to simulate the fatigue of the deck considering three fire scenarios. Choi and Shin benchmark is used to validate the damaged models of the deck in which a good coincide was seen between them. The results revealed that TFSI models and coupled thermal-stress models are significant in detecting earlier vortex induced vibration and lock-in regions in addition to predicting damages and fatigue of the deck due to fire incidents.

Keywords： fire scenario     transient heat transfer     TFSI model     coupled thermal-stress     XFEM    

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Title Author Date Type Operation

Robust energy-efficient train speed profile optimization in a scenario-based position–time–speed network

Journal Article

Current scenario and challenges of plastic pollution in Bangladesh: a focus on farmlands and terrestrial

Journal Article

Scenario analysis of the energy demand and CO

Jihong ZHANG, Jian ZHOU, Guangping HU, Tianhou ZHANG

Journal Article

Vanadium metabolism investigation using substance flow and scenario analysis

Fangfang ZHANG, Huiquan LI, Bo CHEN, Xue GUAN, Yi ZHANG

Journal Article

Scenario-based assessment and multi-objective optimization of urban development plan with carrying capacity

Yilei Lu, Yunqing Huang, Siyu Zeng, Can Wang

Journal Article

Scenario analysis of water pollution control in the typical peri-urban river using a coupled hydrodynamic-water

Haifeng JIA, Shuo WANG, Mingjie WEI, Yansong ZHANG

Journal Article

China’s pre-2020 CO

Hailin WANG

Journal Article

Modeling and simulation of industrial water demand of Beijing municipality in China

Shouke WEI, Shafi Noor ISLAM, Alin LEI,

Journal Article

Ranking of design scenarios of TMD for seismically excited structures using TOPSIS

Sadegh ETEDALI

Journal Article

Capacity estimation and preliminary strategy for reducing the release of dioxins in China

YU Gang, ZHANG Qing, HUANG Jun, CAI Zhenxiao, SUI Qian

Journal Article

Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Journal Article

Exploring price effects on the residential water conservation technology diffusion process: a case study of Tianjin city

Junying CHU, Hao WANG, Can WANG

Journal Article

Managing obsolescence of embedded hardware and software in secure and trusted systems

Zachary A. COLLIER, James H. LAMBERT

Journal Article

The general planning scenarios of electromagnetic rail launch system

Zhai Lipeng, Feng Junwen, Wang Huating, Bai Ju

Journal Article

Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed to fire

Nazim Abdul NARIMAN

Journal Article