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Chi-Fang Wang
Department of Bioenvironmental Systems Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan;(M.-C.H.);(C.-F.W.)

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Journal article
Published: 30 December 2018 in International Journal of Environmental Research and Public Health
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Urban metabolism analyzes the supply and consumption of nutrition, material, energy, and other resources within cities. Food, water, and energy are critical resources for the human society and have complicated cooperative/competitive influences on each other. The management of interactive resources is essential for supply chain analysis. This research analyzes the food-water-energy system of urban metabolism for sustainable resources management. A system dynamics model is established to investigate the urban metabolism of food, water, and energy resources. This study conducts a case study of Shihmen Reservoir system, hydropower generation, paddy rice irrigation of Taoyuan and Shihmen Irrigation Associations, and water consumption in Taoyuan, New Taipei, and Hsinchu cities. The interactive influence of the food-water-energy nexus is quantified in this study; the uncertainty analysis of food, water, and energy nexus is presented.

ACS Style

Ming-Che Hu; Chihhao Fan; Tailin Huang; Chi-Fang Wang; Yu-Hui Chen. Urban Metabolic Analysis of a Food-Water-Energy System for Sustainable Resources Management. International Journal of Environmental Research and Public Health 2018, 16, 90 .

AMA Style

Ming-Che Hu, Chihhao Fan, Tailin Huang, Chi-Fang Wang, Yu-Hui Chen. Urban Metabolic Analysis of a Food-Water-Energy System for Sustainable Resources Management. International Journal of Environmental Research and Public Health. 2018; 16 (1):90.

Chicago/Turabian Style

Ming-Che Hu; Chihhao Fan; Tailin Huang; Chi-Fang Wang; Yu-Hui Chen. 2018. "Urban Metabolic Analysis of a Food-Water-Energy System for Sustainable Resources Management." International Journal of Environmental Research and Public Health 16, no. 1: 90.

Journal article
Published: 08 February 2018 in Sustainability
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This research aims to analyze the food–energy interactive nexus of sustainable urban plant factory systems. Plant factory systems grow agricultural products within artificially controlled growing environment and multi-layer vertical growing systems. The system controls the supply of light, temperature, humidity, nutrition, water, and carbon dioxide for growing plants. Plant factories are able to produce consistent and high-quality agricultural products within less production space for urban areas. The production systems use less labor, pesticide, water, and nutrition. However, food production of plant factories has many challenges including higher energy demand, energy costs, and installation costs of artificially controlled technologies. In the research, stochastic optimization model and linear complementarity models are formulated to conduct optimal and equilibrium food–energy analysis of plant factory production. A case study of plant factories in the Taiwanese market is presented.

ACS Style

Li-Chun Huang; Yu-Hui Chen; Chi-Fang Wang; Ming-Che Hu. Food-Energy Interactive Tradeoff Analysis of Sustainable Urban Plant Factory Production Systems. Sustainability 2018, 10, 446 .

AMA Style

Li-Chun Huang, Yu-Hui Chen, Chi-Fang Wang, Ming-Che Hu. Food-Energy Interactive Tradeoff Analysis of Sustainable Urban Plant Factory Production Systems. Sustainability. 2018; 10 (2):446.

Chicago/Turabian Style

Li-Chun Huang; Yu-Hui Chen; Chi-Fang Wang; Ming-Che Hu. 2018. "Food-Energy Interactive Tradeoff Analysis of Sustainable Urban Plant Factory Production Systems." Sustainability 10, no. 2: 446.

Journal article
Published: 01 August 2008 in Journal of Hydraulic Engineering
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An attempt was made to couple the water quality model of Danshuei River to the three-dimensional unstructured-grid hydrodynamic model [Eulerian–Lagrangian circulation model (ELCIRC)]. The Eulerian–Lagrangian scheme for the solution of the transport equations of salt in ELCIRC was demonstrated to be not mass conservative. The scheme was replaced with a finite-volume/finite-difference upwind scheme to ensure mass conservation both locally and globally. The same scheme was also used for the scalar transport equation in the water quality model. The representation of mass flux in the scalar transport equation is carefully formulated to be consistent with that of volume flux used in the continuity equations of ELCIRC. It was demonstrated that the newly revised scheme (1) conserved mass locally and globally; (2) conserved mass for both conservative and nonconservative substances subjected to biogeochemical transformation; and (3) preserved the integrity of the wetting-and-drying scheme. Further, the baroclinic simulation using the newly revised scheme showed a better result in terms of salt intrusion and salinity distribution in the Danshuei River estuary.

ACS Style

Chi-Fang Wang; Harry V. Wang; Albert Y. Kuo. Mass Conservative Transport Scheme for the Application of the ELCIRC Model to Water Quality Computation. Journal of Hydraulic Engineering 2008, 134, 1166 -1171.

AMA Style

Chi-Fang Wang, Harry V. Wang, Albert Y. Kuo. Mass Conservative Transport Scheme for the Application of the ELCIRC Model to Water Quality Computation. Journal of Hydraulic Engineering. 2008; 134 (8):1166-1171.

Chicago/Turabian Style

Chi-Fang Wang; Harry V. Wang; Albert Y. Kuo. 2008. "Mass Conservative Transport Scheme for the Application of the ELCIRC Model to Water Quality Computation." Journal of Hydraulic Engineering 134, no. 8: 1166-1171.

Comparative study
Published: 31 May 2007 in Journal of Environmental Science and Health, Part A
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An ecosystem model was developed to simulate the water quality and plankton dynamics in the Danshuei River estuary, Taiwan. The model simulates the hydrodynamics with a laterally integrated 2-dimensional intratidal numerical model, which supplies the physical transport processes for simulation of water quality and plankton state variables. The application of the model to the Danshuei River estuary indicates that the point source loadings are mainly responsible for the degraded water quality and very high nutrient concentrations in the estuary. The impacts of wastewater discharges are tightly controlled by the transport processes. Frequent occurrence of high river flow and flood events rapidly cleanses the estuary by flushing out both pollutants and plankton populations. The plankton is allowed to grow to significant populations if low river flow lasts for a period much longer than the biological time scale.

ACS Style

Chi-Fang Wang; Ming-Hsi Hsu; Wen-Cheng Liu; Jiang-Shiou Hwang; Jiunn-Tzong Wu; Albert Y. Kuo. Simulation of water quality and plankton dynamics in the Danshuei River estuary, Taiwan. Journal of Environmental Science and Health, Part A 2007, 42, 933 -953.

AMA Style

Chi-Fang Wang, Ming-Hsi Hsu, Wen-Cheng Liu, Jiang-Shiou Hwang, Jiunn-Tzong Wu, Albert Y. Kuo. Simulation of water quality and plankton dynamics in the Danshuei River estuary, Taiwan. Journal of Environmental Science and Health, Part A. 2007; 42 (7):933-953.

Chicago/Turabian Style

Chi-Fang Wang; Ming-Hsi Hsu; Wen-Cheng Liu; Jiang-Shiou Hwang; Jiunn-Tzong Wu; Albert Y. Kuo. 2007. "Simulation of water quality and plankton dynamics in the Danshuei River estuary, Taiwan." Journal of Environmental Science and Health, Part A 42, no. 7: 933-953.

Journal article
Published: 01 September 2004 in Journal of Hydraulic Engineering
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A vertical (laterally integrated) two-dimensional numerical model was applied to study the salt water intrusion in the Tanshui River estuarine system, Taiwan. The river system has experienced dramatic changes in the past half century because of human intervention. The construction of two reservoirs and water diversion in the upper reaches of the river system significantly reduces the freshwater inflow. The land subsidence within the Taipei basin and the enlargement of the river constriction at Kuan-Du have lowered the river bed. Both changes have contributed farther to the intrusion of tidal flow and salt water in the upstream direction. The model was reverified with the earliest available hydrographic data measured in 1977. The overall performance of the model is in reasonable agreement with the field data. The model was then used to investigate the change in salt water intrusion as a result of reservoir construction and bathymetric changes in the river system. The model simulation study reveals that significant salinity increases have resulted from the combined changes. It has been speculated by ecological researchers that the long-term increase in salinity might be the driving force altering the aquatic ecosystem structure in the lower reach of the estuary and the Kuan-Du mangrove swamp, particularly the enlargement of the mangrove area and the disappearance of freshwater marshes. However, concrete proof has not been available since no prototype salinity data were available prior to the reservoir construction. This case study offers the first quantitative estimate of the salinity changes due to human interference in this natural system.

ACS Style

Wen-Cheng Liu; Ming-Hsi Hsu; Chi-Ray Wu; Chi-Fang Wang; Albert Y. Kuo. Modeling Salt Water Intrusion in Tanshui River Estuarine System—Case-Study Contrasting Now and Then. Journal of Hydraulic Engineering 2004, 130, 849 -859.

AMA Style

Wen-Cheng Liu, Ming-Hsi Hsu, Chi-Ray Wu, Chi-Fang Wang, Albert Y. Kuo. Modeling Salt Water Intrusion in Tanshui River Estuarine System—Case-Study Contrasting Now and Then. Journal of Hydraulic Engineering. 2004; 130 (9):849-859.

Chicago/Turabian Style

Wen-Cheng Liu; Ming-Hsi Hsu; Chi-Ray Wu; Chi-Fang Wang; Albert Y. Kuo. 2004. "Modeling Salt Water Intrusion in Tanshui River Estuarine System—Case-Study Contrasting Now and Then." Journal of Hydraulic Engineering 130, no. 9: 849-859.

Journal article
Published: 01 March 2003 in Journal of Waterway, Port, Coastal, and Ocean Engineering
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The effects of mangrove trees on the flow field in a tidal estuary during high freshwater discharge events are investigated using a depth-averaged two-dimensional hydrodynamic model. The model is refined to include the effects of mangrove trees on flow resistance. The resistance is described by a set of two empirical equations depending on water depth and vegetative parameters. The vegetative parameters are investigated and tested using on-site samples of Kandelia plants. The model is calibrated and verified with experimental data measured in a physical model. The agreement between the measured and computed water surface elevation is good. The model is then applied to the entire tidal Tanshui River system, which includes mangrove swamps near the mouth of the Keelung River. The flow patterns and resistance distributions are investigated for several scenarios of high flow events. The results show that the refined model provides an ideal management tool for the mangrove swamps.

ACS Style

Wen-Cheng Liu; Ming-Hsi Hsu; Chi-Fang Wang. Modeling of Flow Resistance in Mangrove Swamp at Mouth of Tidal Keelung River, Taiwan. Journal of Waterway, Port, Coastal, and Ocean Engineering 2003, 129, 86 -92.

AMA Style

Wen-Cheng Liu, Ming-Hsi Hsu, Chi-Fang Wang. Modeling of Flow Resistance in Mangrove Swamp at Mouth of Tidal Keelung River, Taiwan. Journal of Waterway, Port, Coastal, and Ocean Engineering. 2003; 129 (2):86-92.

Chicago/Turabian Style

Wen-Cheng Liu; Ming-Hsi Hsu; Chi-Fang Wang. 2003. "Modeling of Flow Resistance in Mangrove Swamp at Mouth of Tidal Keelung River, Taiwan." Journal of Waterway, Port, Coastal, and Ocean Engineering 129, no. 2: 86-92.