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Articles 1 - 7 of 7
Full-Text Articles in Physical Sciences and Mathematics
Cost Effectiveness Of Recycling: A Systems Model, David J. Tonjes, Sreekanth Mallikarjun
Cost Effectiveness Of Recycling: A Systems Model, David J. Tonjes, Sreekanth Mallikarjun
Technology & Society Faculty Publications
Financial analytical models of waste management systems have often found that recycling costs exceed direct benefits, and in order to economically justify recycling activities, externalities such as household expenses or environmental impacts must be invoked. Certain more empirically based studies have also found that recycling is more expensive than disposal. Other work, both through models and surveys, have found differently. Here we present an empirical systems model, largely drawn from a suburban Long Island municipality. The model accounts for changes in distribution of effort as recycling tonnages displace disposal tonnages, and the seven different cases examined all show that curbside …
Water Level Dynamics Of The North American Great Lakes: Nonlinear Scaling And Fractional Bode Analysis Of A Self-Affine Time Series, Jeffrey Ralph Smigelski
Water Level Dynamics Of The North American Great Lakes: Nonlinear Scaling And Fractional Bode Analysis Of A Self-Affine Time Series, Jeffrey Ralph Smigelski
Browse all Theses and Dissertations
Time series that exhibit multiple scaling properties in the frequency domain are common in natural systems (e.g., temperature through geologic time). NOAA verified hourly water level data ranging from 20 to 30 years in duration for nine stations in the North American Great Lakes is converted to the frequency domain using a complex discrete fast Fourier transform (FFT) and then expressed as a power spectrum in terms of frequency versus power. To quantify power law scaling behavior, a scaling exponent (β) is determined by fitting a power function to a log-log plot of frequency (f) or …
Rehabilitate Failing Park Sewage System Environmental Assessment, United States Department Of The Interior, National Park Service
Rehabilitate Failing Park Sewage System Environmental Assessment, United States Department Of The Interior, National Park Service
Environmental Assessments (UT)
The National Park Service (NPS) proposes to rehabilitate the failing sewage system within Bryce Canyon National Park, Utah. The rehabilitation would provide a safe, healthy, and functional environment, and maintain public health and future service for park visitors and staff. Portions of the sanitary sewage collection system were originally constructed in 1958 of clay pipe and currently service the lodge, staff housing, and visitor center before feeding into sewage treatment lagoons. Sections of the sewage system have deteriorated significantly with age. These sections of the system and appurtenant manholes are deteriorating into pieces that regularly clog the system and cause …
A System For Estimating Bowen Ratio And Evaporation From Waste Lagoons, Rezaul Mahmood
A System For Estimating Bowen Ratio And Evaporation From Waste Lagoons, Rezaul Mahmood
School of Natural Resources: Faculty Publications
No abstract provided.
Historical Vegetation, Fuel Loads, And Integrated Resource Information System For Bryce Canyon National Park, Utah State University, Department Of Forest Resources And Ecology Center
Historical Vegetation, Fuel Loads, And Integrated Resource Information System For Bryce Canyon National Park, Utah State University, Department Of Forest Resources And Ecology Center
Elusive Documents
This report describes a comprehensive approach to understanding the role and effects of fire in Bryce Canyon National Park. The study includes a reconstruction of the historic vegetation of Bryce Canyon National Park from historic photographs, inference from computer simulation models, and research in areas of similar vegetation. The successional pathways from the historic vegetation to the present are discussed and the landscape scale consequences of fire suppression and successional devolopment are addressed.
Summary Utah/Western Colo, 1992 System Study, United States Department Of Energy Western Area Power Administration
Summary Utah/Western Colo, 1992 System Study, United States Department Of Energy Western Area Power Administration
All U.S. Government Documents (Utah Regional Depository)
The Utah/western Colorado area of the Rocky Mountain Region has adequate coal and water resources to support additional thermal generation plants beyond those already in service. Also within the region are several sites suitable for large-sized hydroelectric pumped-storage projects for purposes of supplying peaking power. The close proximity of these types of electric generating facilities is desirable in providing offpeak energy during the pumping cycle for the pumped-storage units. Considering that the potential capacity of each type of generation is in the 500 to 1,000 (two units) MW range per site and would require major extra-high-voltage (EHV) transmission developments, it …
A System And Program For Monitoring Co2 Concentration Gradient, And Flux In An Agricultural Region, N. J. Rosenberg, S. B. Verma
A System And Program For Monitoring Co2 Concentration Gradient, And Flux In An Agricultural Region, N. J. Rosenberg, S. B. Verma
School of Natural Resources: Faculty Publications
No abstract provided.