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检索条件"机构=Environmental Systems Engineering Program"

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Optimizing management efforts for sustainable long-range water supply planning

Optimizing management efforts for sustainable long-range wat...

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World environmental and Water Resources Congress 2006: Examining the Confluence of environmental and Water Concerns

作者： Titcomb, Viktoria Zoltay Kirshen, Paul H. Vogel, Richard M. Tufts University Department of Civil and Environmental Engineering Water: Systems Science and Society Program Medford MA 02155 United States

ISBN: (纸本)0784408564

Complex watershed models with decision support systems (DSS) have been developed to aid in integrated water resources management (IWRM) and sustainable water supply planning. Detailed simulation models are important in determining operations policy but there is also a need for screening models that can compare a full range of management options before developing detailed site specific IWRM models. This study is an initial effort to develop a generic, optimization model and DSS that considers a comprehensive set of options for managing the quantity, quality, routing and use of water throughout the watershed including traditional water sources, direct and indirect water reuse, groundwater banking, demand management and land use management. The model is developed in accessible, familiar software with a user interface to facilitate the application of the model. A DSS is integrated in the interface to provide extensive output analysis to aid in recognizing and understanding relationships and tradeoffs, thereby supporting informed decision making. © 2006 ASCE.

关键词： Water supply

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Study on mechanisms of biosurfactant-enhanced composting technology for waste management

Study on mechanisms of biosurfactant-enhanced composting tec...

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Canadian Society for Civil engineering - 31st Annual Conference: 2003 Building our Civilization

作者： Zhang, B.Y. Huang, G.H. Chen, B. Xi, B.D. Maqsood, I. Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Sask. S4S 0A2 Canada

ISBN: (纸本)1894662040

Biosurfactants produced by microbial activities may potentially promote efficiency of solid waste composting. A study was performed to characterize the effect of biosurfactant on solid waste biodegradation during a composting process. Solid waste was shredded then treated in a 8-L batch reactor. Biosurfactant production, characteristics and maturity degree were monitored every day throughout the process. Biosurfactant was examined on the basis of surface tension and emulsification capacity. The maturity degree was evaluated by measuring indices including C/N, CHA (Humic acid carbon) and CFA (fulvic acid carbon). With the experimental results, the impact of biosurfactant production on compost maturity was studied, which provided important implications in understanding mechanisms of solid waste composting. This research output was also proved to be valuable for improving the composting efficiency and providing technical support for waste management.

关键词： Waste management

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An integrated approach for estimating oil volume in petroleum-contminated sites - A North American case study

An integrated approach for estimating oil volume in petroleu...

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Canadian Society for Civil engineering - 1999 Annual Conference

作者： Chen, Z. Huang, G.H. Chakma, A. Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Sask. S4S 0A2 Canada

Subsurface contamination by light nonaqueous phase liquids (LNAPLs) such as hydrocarbon spill and leakage is a serious problem in North America. Following release of hydrocarbons in the subsurface, significant amounts of the fluid are trapped in soil by capillary forces and in saturated zone due to slow groundwater flow. Removal of these trapped free phase LNAPLs is critical because it will not only provide the possibility for complete cleaning up but also prevent further contamination and thus potential environment/public health risks. Estimation for volume of these trapped free LNAPLs is the first step before any further studies or actions can be undertaken. In this study, an integrated approach is employed for estimating LNAPLs distribution in porous media at a site located in western Canada. The site has one original release source that is a flare pit. Spilled petroleum products in past two decades seriously contaminated the on-site soil and groundwater. More than ten monitoring wells are located around the emission sources. At most of them, free phase LNAPLs have been found since early 1980s. Result of this case study reveals that soil properties and site heterogeneous characteristics have significant impacts on the spreading of contaminants and thus oil volume estimation. The LNAPLs in subsurface do not simply present themselves as a distinct layer floating over a capillary fringe. In general, this proposed method could serve as an effective and convenient tool for obtaining reasonable estimation of residual oil volume in subsurface. The results offer insight into the contamination details and are useful for further modeling and remediation studies.

关键词： Crude petroleum

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Development of an intuitive river-pollution index for prioritizing water quality management alternatives

Development of an intuitive river-pollution index for priori...

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Canadian Society for Civil engineering - 31st Annual Conference: 2003 Building our Civilization

作者： Maqsood, I. Huang, G.H. Chen, Z. Huang, Y.F. Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Sask. S4S 0A2 Canada

ISBN: (纸本)1894662040

This paper describes methodological development of an intuitive river-pollution index (RPI) to allow assessment of priorities for water quality management in a river basin. The proposed RPI improves upon existing approaches as it is directly linked to water quality criteria and designated water uses, and reflects the importance of different water uses in a given reach. The RPI ranges from 1 (ideal water quality) to 5 (worst water quality) for various water-use categories. Through this technique, two types of RPIs can be generated for a river basin: (a) an RPI for each water-use category and (b) weighted RPI. Following the development of the technique, concepts of plan efficiency index (PEI) and benefit/cost (B/C) ratio are introduced to make comparisons of management plans more intuitive. Applicability of the developed RPI is illustrated by applying to a number of examples. Reasonable results have been obtained demonstrating that the proposed RPI is a useful tool for not only rating water quality but also ranking management plans.

关键词： Water pollution

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In situ bioremediation of subsurface petroleum contamination in Western Canada

In situ bioremediation of subsurface petroleum contamination...

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Canadian Society for Civil engineering - 31st Annual Conference: 2003 Building our Civilization

作者： Guo, Q. Huang, G.H. Maqsood, I. Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina Sask. S4S 0A2 Canada

ISBN: (纸本)1894662040

Bioremediation is an emerging technology that helps clean up soil and groundwater, which are contaminated with petroleum products. This study investigates the bioremediation of petroleum-contaminated subsurface in a western Canadian context. Screening and enhancement of gasoline degradable local psychrophilic microorganism strains are conducted for the soil samples acquired from petroleum-contaminated sites and yard compost. Four purified strains obtained through the process are applied in batch experiments to determine their performance under various conditions. A factorial design is then conducted with four factors (nutrient richness, inoculation amount, temperature, clay/silt content) at two levels. The results show that clay/silt has the highest negative effect on degradability of the microorganism followed by temperature with positive effect. Validation of these results is being processed in a pilot-scale physical model and on a practical site with one- and six-month experimentation periods, respectively.

关键词： Bioremediation

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A multistage scenario-based inexact fuzzy-stochastic chance-constrained programming for water resources management under uncertainty

A multistage scenario-based inexact fuzzy-stochastic chance-...

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International Conference on Natural Computation

作者： Jin, Lei Huang, Guohe Fan, Yurui Wang, Li Zhou, Huaidong Department of Environmental Engineering Xiamen University of Technology Xiamen 361005 China Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina SK S4S 0A2 Canada

ISBN: (纸本)9781424459612

In this study, a multistage scenario-based inexact fuzzy-stochastic chance-constrained programming (MSIFSCCP) is proposed for water resources management under uncertainty. The developed a hybrid inexact optimization approach integrates multistage scenario-based interval-stochastic programming (MSISP), chance-constrained programming (CCP) and fuzzy-stochastic linear programming (FSLP) within a general optimization framework. It can directly incorporated and reflect uncertainties presented as both interval numbers and probability distributions. Using semi-infinite analysis can be incorporated into the modeling framework to deal with infinite α-cuts to the membership functions of fuzzy parameters. This model could be used for water authorities and thus it provides useful decision under various social environmental system conditions. © 2010 IEEE.

关键词： Probability distributions

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Extending BIM to incorporate information of RFID tags attached to building assets

Extending BIM to incorporate information of RFID tags attach...

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Annual Conference of the Canadian Society for Civil engineering 2013: Know-How - Savoir-Faire, CSCE 2013

作者： Motamedi, A. Setayeshgar, S. Soltani, M.M. Hammad, A. Individualized Program Concordia University Canada Bullding Civil and Environmental Engineering Concordia University Canada Concordia Institute for Information Systems Engineering Concordia University Canada

ISBN: (纸本)9781634398978

Building Information Modelling (BIM) is emerging as a method of creating, sharing, exchanging and managing the building information throughout the lifecycle between all stakeholders. Radio Frequency Identification (RFID), on the other hand, has emerged as an automatic data collection and information storage technology, and has been used in different applications in the AECOO (Architecture, engineering, Construction, Owner and Operator) industry. In our previous research, RFID is proposed to be used to store lifecycle and context aware information taken from a BIM during the lifecycle as a distributed database. Furthermore, RFID tags can be considered as components of the constructed facility. Consequently, there is a need for a standard and formal definition of RFID technology components in BIM. The research goal of this paper is to propose adding the definitions for RFID technology to the BIM standard and to map the data to be stored on RFID memory to associated entries in a BIM database. A requirements' gathering and conceptual design are performed to add new entities, data types, and properties. Furthermore, the paper identifies relationships between RFID tags and building assets. It provides the opportunity to interrelate BIM data and RFID data using predefined relationships. Eventually, the data related to objects that are required to be saved on RFID tags can be automatically selected using defined relationships in a BIM. To explore the technical feasibility of the proposed approach, a case study has been implemented and tested using available BIM software.

关键词： Conceptual design

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UNDERGRADUATE AND GRADUATE DESIGN PROJECTS

UNDERGRADUATE AND GRADUATE DESIGN PROJECTS

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ASME 1999 International Mechanical engineering Congress and Exposition, IMECE 1999

作者： Devey, Gilbert B. Biomedical Engineering and Research to Aid Persons with Disabilities Program Bioengineering and Environmental Systems Division Directorate for Engineering National Science Foundation ArlingtonVA United States

ISBN: (纸本)9780791816400

The National Science Foundation (NSF) was established in 1950 as an Independent Agency of the Federal Government with the broad mission to promote and advance scientific progress in the U.S. This is accomplished primarily by supporting research and education in all disciplines of the natural and social sciences, mathematics, and engineering. Support is provided principally in the form of grants awarded on a competitive basis under a rigorous peer review process;NSF does not conduct research itself. In 1992, NSF defined a project eligible for support as bioengineering research as one "...with diagnosis or treatment-related goals, that applies engineering principles to problems in biology and medicine while advancing engineering knowledge is eligible for support. Bioengineering research to aid persons with disabilities is also eligible".' Bioengineering at NSF has two defined programs: 1 - "Biochemical engineering", and 2-a two-component activity "Biomedical engineering" (BME) and "Research to Aid Persons with Disabilities" (RAPD). Undergraduate and Graduate Design Projects is part of the RAPD component of the program. © 1999 American Society of Mechanical Engineers (ASME). All rights reserved.

关键词： Diagnosis

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Interval stochastic linear programming model for optimal water pollution management 6

Interval stochastic linear programming model for optimal wat...

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6th International Conference on environmental Informatics, ISEIS 2007

作者： Huang, K. Zhou, F. Guo, H.C. Liu, Y. Huang, G.H. College of Environmental Sciences Peking University Beijing100871 China Environmental Systems Engineering Program Faculty of Engineering University of Regina ReginaSKS4S 0A2 Canada

An interval two-stage stochastic linear programming (ITSLP) model for optimal water pollution management at the watershed scale was developed. The modeling framework is established by incorporating the concept of two-stage stochastic programming within an interval-parameter optimization framework. The model can deal with the decision problem in water pollution management under random runoff and streamflow for a water pollution management scheme through minimizing the net direct expenditure on pollution abatement. The constraints included in the model were environmental capacity, farmland, domestic waste water treatment, rural wastes treatment, soil erosion, slope lands, land coverage, lake riparian vegetation buffer and technical constraint. The ITSLP model may help decision maker develop optimal watershed water pollution management strategies.

关键词： Watersheds

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Billion Ton Update: Commentary from study leads and US DOE

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Industrial Biotechnology 2011年第5期7卷 381-383页

作者： Perlack, Robert D. Stokes, Bryce Bryan, Paul Ferrell, John Bioenergy Resource and Engineering Systems Group Environmental Sciences Division Oak Ridge National Laboratory United States Golden Field Office United States US DOE-Biomass Program United States

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