One of the most serious problems confronting modern America
is the efficient and rational utilization of the recreation resource base,
not only in terms of present demands and needs, but future as well.
The resource manager, in the past, has had few guidelines from
which to determine the type and...
As the Forest Service and the Bureau of Land Management turn toward ecosystem and adaptive models of forest stewardship, they are being called on to develop meaningful and lasting relations with citizens. These new management styles require not only improved strategies for public involvement but also methods to examine the...
This archive is a compilation of SWMM input files and STELLA models, augmented by R scripts to perform various processing for sensitivity analysis, data import / export, plot generation and computation of various summary outputs. Part I is the sensitivity analysis of a SWMM model representative of the case study...
The urban hydrology and hydraulics program, US EPA SWMM 5, has been coupled with a compartment model of a wastewater treatment plant (WWTP) in the system dynamics software, STELLA, to simulate the radiocesium pathway from urban catchment to the wastewater treatment sludge. Two literature case studies were re-examined. Firstly, a...
Finite, uncertain, and increasingly expensive
energy resources require a better understanding of energy
utilization in all sectors of the national economy including agriculture. A significant portion of energy used
in agriculture is required for the manufacturing, installation, transporting, and operation of irrigation systems.
Quantification of the amounts of energy used...