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Full-Text Articles in Physical Sciences and Mathematics

Empirical Geographic Modeling Of Switchgrass Yields In The United States, Henriette I. Jager, Latha M. Baskaran, Craig C. Brandt, Ethan B. Davis Sep 2010

Empirical Geographic Modeling Of Switchgrass Yields In The United States, Henriette I. Jager, Latha M. Baskaran, Craig C. Brandt, Ethan B. Davis

Dartmouth Scholarship

Switchgrass (Panicum virgatum L.) is a perennial grass native to the United States that has been studied as a sustainable source of biomass fuel. Although many field‐scale studies have examined the potential of this grass as a bioenergy crop, these studies have not been integrated. In this study, we present an empirical model for switchgrass yield and use this model to predict yield for the conterminous United States. We added environmental covariates to assembled yield data from field trials based on geographic location. We developed empirical models based on these data. The resulting empirical models, which account for spatial …


The Planet Of The Thinking Animal: Surviving The 21st Century, Tor Hundloe Jul 2010

The Planet Of The Thinking Animal: Surviving The 21st Century, Tor Hundloe

Tor Hundloe

"Tor Hundloe presents us with two options: change the way we live, or find two more planets to support the world's burgeoning population. With the powerful energy of clever optimism he points the way for this Earth-only option to succeed" (Senator Bob Brown). "We humans are capable of brilliant ideas and inventions, but we have yet to learn the lessons that will prove that we deserve our place on the planet as the thinking animal." (Backcover). The Planet of the Thinking Animal looks to particular countries and groups of countries and examines their economic and environmental policies and activities. It …


Business Sustainability And Undergraduate Management Education In Australia, Josie Fisher, Ingrid Bonn Jul 2010

Business Sustainability And Undergraduate Management Education In Australia, Josie Fisher, Ingrid Bonn

Ingrid Bonn

There is a large and rapidly expanding academic literature arguing that there is an urgent requirement for businesses to become more sustainable. There is also a demonstrated need for managers to develop a better understanding of sustainability and the appropriate strategies required to improve business sustainability. In addition, there are international calls for educators to address sustainability in their programs. The aim of this study was to investigate the extent to which business sustainability is being incorporated into undergraduate business and management courses in Australian universities. The high percentage of international students enrolled in these courses suggests our findings have …


Gis Data: Fairfax County And The City Of Alexandria, Virginia Shoreline Inventory Report, Marcia Berman, Harry Berquist, Sharon Killeen, Carl Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky Jan 2010

Gis Data: Fairfax County And The City Of Alexandria, Virginia Shoreline Inventory Report, Marcia Berman, Harry Berquist, Sharon Killeen, Carl Hershner, Karinna Nunez, Karen Reay, Tamia Rudnicky

Data

The data inventory developed for the Shoreline Inventory is based on a three‑tiered shoreline assessment approach. In most cases this assessment characterizes conditions that can be observed from a small boat navigating along the shoreline. The three tiered shoreline assessment approach divides the shorezone into three regions: 1) the immediate riparian zone, evaluated for land use; 2) the bank, evaluated for height, stability, cover and natural protection; and 3) the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes. Hand-held GPS units are used to log features observed in the field.

Three GIS coverages are developed …