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Brigham Young University

2006

Forecasting

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Non-Linear, Multivariate Forecasting Of Hydrologic And Anthropogenic Responses To Meteorological Forcing, Edwin Roehl, Terry Murray Jul 2006

Non-Linear, Multivariate Forecasting Of Hydrologic And Anthropogenic Responses To Meteorological Forcing, Edwin Roehl, Terry Murray

International Congress on Environmental Modelling and Software

Managers and users of natural resources often face two challenging problems. One is forecasting future natural system conditions for optimal resource allocation. Here, the natural system is comprised of the weather and a dependant hydrologic system that contains a water resource. The second problem is forecasting the behavior of a combined natural and man-made system, which also includes anthropogenic resource consumers. Even though detailed meteorological forecasting over weeks and months is impractical, hydrologic behaviors such as groundwater cycling can transpire over months and years. Alternatively, man-made systems exhibit behaviors that both lag and lead causal forcing, e.g., seasonal weather changes. …


A Retrospective Analysis Of Model Uncertainty For Forecasting Hydrologic Change, D. J. Semmens, M. Hernandez, D. C. Goodrich, W. G. Kepner Jul 2006

A Retrospective Analysis Of Model Uncertainty For Forecasting Hydrologic Change, D. J. Semmens, M. Hernandez, D. C. Goodrich, W. G. Kepner

International Congress on Environmental Modelling and Software

GIS-based hydrologic modeling offers a convenient means of assessing the impacts associated with land-cover/use change for environmental planning efforts. Alternative future scenarios can be used as input to hydrologic models and compared with existing conditions to evaluate potential environmental impacts as part of this process. Model error, however, can be significant and potentially compounded when projecting future land-cover/use change and management conditions. To address this problem we have utilized repeat observations of land cover/use as a proxy for projected future conditions. A systematic analysis of model efficiency during simulations based on observed land-cover/use change is used to quantify error associated …


E2sp. The Business Case Of An Environmental Information System In Asp Mode., M. Cislaghi, G. Corbetta, R. Mazzilli, F. Scanzani, M. Caselli, L. Trizio, C. Derognat, R. Dunal, K. Klejnowski, A. Bucko-Serafin Jul 2006

E2sp. The Business Case Of An Environmental Information System In Asp Mode., M. Cislaghi, G. Corbetta, R. Mazzilli, F. Scanzani, M. Caselli, L. Trizio, C. Derognat, R. Dunal, K. Klejnowski, A. Bucko-Serafin

International Congress on Environmental Modelling and Software

According to PSR (OECD) and DPSIR (EEA) models, environmental agencies are in charge of measuring the State and Pressure and evaluate the Impact in order to define the most suitable Responses; this implies data analysis and reporting activities, as one of their core responsibilities. Environmental Information Systems support these activities by combining the advantages of first-rate consolidated technology (such as Business Intelligence and Data Warehouses) to specific technical architectures tailored to environmental management tasks. E2SP (Environmental Enterprise Service Provider) is a online reporting and forecasting platform, providing a cost effective, Internet based Environmental Information System and Decision Support System in …


An Optimal Control And Options Theory Approach To Forecasting And Managing Sustainable Systems, Y. Shastri, U. Diwekar Jul 2006

An Optimal Control And Options Theory Approach To Forecasting And Managing Sustainable Systems, Y. Shastri, U. Diwekar

International Congress on Environmental Modelling and Software

Sustainable management of the natural systems is essential in the presence of anthropogenic andnatural disasters. Fisher information based measure and hypothesis have been proposed to quantify the sustainabilityof natural systems, which are used in this work to formulate management objectives. Since uncertaintyis omnipresent in natural systems, its consideration is important. Real options theory deals extensively with therepresentation and forecasting of uncertainty. The options theory, with the Ito mean reverting process, is usedto represent uncertainty, and optimal control theory is used to derive time dependent decisions. The idea isimplemented on a three species predator-prey model. The results highlight the effect of …


Non-Linear, Multivariate Forecasting Of Hydrologic And Anthropogenic Responses To Meteorological Forcing, Edwin Roehl, Terry Murray Jul 2006

Non-Linear, Multivariate Forecasting Of Hydrologic And Anthropogenic Responses To Meteorological Forcing, Edwin Roehl, Terry Murray

International Congress on Environmental Modelling and Software

Managers and users of natural resources often face two challenging problems. One is forecasting future natural system conditions for optimal resource allocation. Here, the natural system is comprised of the weather and a dependant hydrologic system that contains a water resource. The second problem is forecasting the behavior of a combined natural and man-made system, which also includes anthropogenic resource consumers. Even though detailed meteorological forecasting over weeks and months is impractical, hydrologic behaviors such as groundwater cycling can transpire over months and years. Alternatively, man-made systems exhibit behaviors that both lag and lead causal forcing, e.g., seasonal weather changes. …


A Retrospective Analysis Of Model Uncertainty For Forecasting Hydrologic Change, D. J. Semmens, M. Hernandez, D. C. Goodrich, W. G. Kepner Jul 2006

A Retrospective Analysis Of Model Uncertainty For Forecasting Hydrologic Change, D. J. Semmens, M. Hernandez, D. C. Goodrich, W. G. Kepner

International Congress on Environmental Modelling and Software

GIS-based hydrologic modeling offers a convenient means of assessing the impacts associated with land-cover/use change for environmental planning efforts. Alternative future scenarios can be used as input to hydrologic models and compared with existing conditions to evaluate potential environmental impacts as part of this process. Model error, however, can be significant and potentially compounded when projecting future land-cover/use change and management conditions. To address this problem we have utilized repeat observations of land cover/use as a proxy for projected future conditions. A systematic analysis of model efficiency during simulations based on observed land-cover/use change is used to quantify error associated …


E2sp. The Business Case Of An Environmental Information System In Asp Mode., M. Cislaghi, G. Corbetta, R. Mazzilli, F. Scanzani, M. Caselli, L. Trizio, C. Derognat, R. Dunal, K. Klejnowski, A. Bucko-Serafin Jul 2006

E2sp. The Business Case Of An Environmental Information System In Asp Mode., M. Cislaghi, G. Corbetta, R. Mazzilli, F. Scanzani, M. Caselli, L. Trizio, C. Derognat, R. Dunal, K. Klejnowski, A. Bucko-Serafin

International Congress on Environmental Modelling and Software

According to PSR (OECD) and DPSIR (EEA) models, environmental agencies are in charge of measuring the State and Pressure and evaluate the Impact in order to define the most suitable Responses; this implies data analysis and reporting activities, as one of their core responsibilities. Environmental Information Systems support these activities by combining the advantages of first-rate consolidated technology (such as Business Intelligence and Data Warehouses) to specific technical architectures tailored to environmental management tasks. E2SP (Environmental Enterprise Service Provider) is a online reporting and forecasting platform, providing a cost effective, Internet based Environmental Information System and Decision Support System in …


An Optimal Control And Options Theory Approach To Forecasting And Managing Sustainable Systems, Y. Shastri, U. Diwekar Jul 2006

An Optimal Control And Options Theory Approach To Forecasting And Managing Sustainable Systems, Y. Shastri, U. Diwekar

International Congress on Environmental Modelling and Software

Sustainable management of the natural systems is essential in the presence of anthropogenic andnatural disasters. Fisher information based measure and hypothesis have been proposed to quantify the sustainabilityof natural systems, which are used in this work to formulate management objectives. Since uncertaintyis omnipresent in natural systems, its consideration is important. Real options theory deals extensively with therepresentation and forecasting of uncertainty. The options theory, with the Ito mean reverting process, is usedto represent uncertainty, and optimal control theory is used to derive time dependent decisions. The idea isimplemented on a three species predator-prey model. The results highlight the effect of …