While buildings served by multiple rooftop units (RTUs) are widely prevalent in retail and food industries, optimal coordination among RTUs has received little attention. Currently, most buildings utilize plain feedback or heuristic strategies to determine RTU operations. In this paper, we present a switched dynamic programming based approach for optimal scheduling of rooftop unit operations. U...

This paper addresses a major challenge in the residential solar industry: automated design of cost-effective, efficient rooftop photovoltaic (PV) installations. Optimal designs choose system components, locations, and wiring to minimize cost while meeting desired energy output and complying with all physical and legal constraints. We present a novel lower bound for the energy produced by a PV i...

extensive flood damages all over the world necessitate its control and operation. hydrologic impacts of land use change appear in many ways such as total runoff, and flood peak flow. this study was performed in 2014 and aimed to investigate the impacts of land use changes on the occurrence of floods in the catchment of boostan dam in golestan province, iran. for this purpose, watershed modeling...

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract The proportion and origin of groundwater contribution to streamflow from agricultural catchments is relevant to estimation of the effects of nitrate leached from the soil on the quality of surface waters. This study addresses the partition...

The catchment, or catchment area, is the area associated with a segment of a drainage network. Surface runoff in a catchment flows into the associated network segment. Catchment area is commonly used for estimating watershed parameters, such as upstream drainage area, flood frequency, or surface-water flow. Hydrologic analyses require relatively accurate catchment area estimates to furnish subs...

This paper deals with the global control of the Riera Blanca catchment in the Barcelona sewer network using a predictive optimal control approach. This catchment has been modelled using a conceptual modelling approach based on decomposing the catchments in subcatchments and representing them as virtual tanks. This conceptual modelling approach allows real-time model calibration and control of t...

A dynamic landscape evolution modelling platform (CLiDE) is presented that allows a variety of Earth system interactions to be explored under differing environmental forcing factors. Representation of distributed surface and subsurface hydrology within CLiDE is suited to simulation at sub-annual to centennial time-scales. In this study the hydrological components of CLiDE are evaluated against ...

Participative planning processes are being used to examine and determine appropriate strategies for the Lachlan catchment in central NSW Australia. However the inter-related impacts of planning decisions are not easy to unravel. A systems simulation modelling tool is being developed to allow the exploration of alternative environments and strategies. This paper examines the adaptive approach an...