Higher Education and the Promise of Opportunity

The article portrays the passage of the Higher Education Act of 1965 as a watershed event, much like the Morrill Land Grant Act and the G.I. Bill, in the history of opening higher education to a broader range of citizens. What had once been a largely private enterprise for the elite became an increasingly public commitment to make a college and university education accessible to anyone qualified to take advantage of the opportunity. In the last two decades, however, that promise has faded as costs have escalated, financial aid has become less available to the needy, federal and state support has lessened, universities and colleges have become more market oriented and economically segregated, and the barriers to equal access have become higher

Design Considerations for Instruments for Users with Complex Needs in SEN Settings.

Music technology can provide unique opportunities to allow access to music making for those with complex needs in special educational needs (SEN) settings. Whilst there is a growing trend of research in this area, technology has been shown to face a variety of issues leading to underuse in this context. This paper reviews issues raised in literature and in practice for the use of music technology in SEN settings. The paper then reviews existing principles and frameworks for designing digital musical instruments (DMIs.) The reviews of literature and current frameworks are then used to inform a set of design considerations for instruments for users with complex needs, and in SEN settings. 18 design considerations are presented with connections to literature and practice. An implementation example including future work is presented, and finally a conclusion is then offered

Resistivity Arrays as an Early Warning System for Monitoring Runoff Holding Ponds

Monitoring wells are installed to intercept contaminants inadvertently discharged from inground structures designed to retain salt-affected wastewaters; however, several difficulties with collection and data interpretation limit their effectiveness. Therefore, improved monitoring methods are needed. The objective of this study was to evaluate the effectiveness of resistivity array technology as an early warning system to monitor for unintended basin discharge. Subsurface resistivity arrays were installed at two Nebraska sites: a beef cattle feedyard located at the U.S. Meat Animal Research Center, Clay Center, Nebraska (FyA) and a commercial cattle feeding operation (FyB). Monitoring well data did not identify any unintended discharge events during the study period. However, the resistivity array (RA) system detected a discharge event that was localized in the non-saturated zone adjacent to the pond at FyB within one day following a precipitation event. Monitoring the unsaturated portion allows the RA system a capacity beyond traditional monitoring wells, which can only intercept discharge carried in groundwater. Also, the RA system effectively measured a larger area (i.e., a virtual curtain) compared to the point measure typical of monitoring wells. Therefore, RA technology provides broader coverage and is more tolerant to placement issues for intercepting discharge. Finally, the capacity to automate the RA system provides a means to continuously monitor unintended subsurface discharge from runoff holding ponds. This continuous monitoring system is more likely to detect discharge events than the bi-annual sampling typically required for monitoring wells. Automatic and continuous monitoring provides feedyard operators options to better manage environmental impacts associated with runoff holding ponds

Letter from Robert L. Woodbury to Stanley L. Freeman Jr.

Letter from Robert L. Woodbury, President of the University of Southern Maine, to Stanley Freeman, Administrative Director of Canadian/Franco-American Studies at the University of Maine at Orono, appointing Madeleine Giguère to represent USM on a steering committee for a conference concluding the Canadian Franco-American Studies grant.https://digitalcommons.usm.maine.edu/giguere-usm-career/1025/thumbnail.jp

Energy and Nutrient Recovery fromCattle Feedlots

Selective harvesting of manure can benefit cattle producers by creating a product of value. A tool that identifies locations of manure accumulation has been developed using a subsurface sensor (Dualem-1S, Milton, ON) and software designed for salt mapping (ESAP, Riverside, CA). The combination allowed the development of models to estimate higher heating value (HHV) of feedlot manure across a feedlot pen. Soil sample data from cattle feedlots in Texas and Nebraska were analyzed for volatile solids (VSs) then combined with the Dualem-1S apparent soil conductivity (ECa) data to produce models having correlations between associated ECa values and VS (r2 = 0.869, VS). A corresponding model is under development to estimate the moisture content of the collectable solids. The combined models allow real-time spatial estimates of HHV within a feedlot pen. These methods will allow direct harvesting of VS for use as a recoverable energy source through direct combustion or cocombustion

Greenhouse Gas Emissions from Beef Feedlot Surface Materials as Affected by Diet, Moisture, Temperature, and Time

A laboratory study was conducted to measure the effects of diet, moisture, temperature, and time on greenhouse gas (GHG) emissions from feedlot surface materials (FSM). The FSM were collected from open-lot pens where beef cattle were fed either a dry-rolled corn (DRC) diet containing no wet distillers grains with solubles (WDGS) or a DRC diet containing 35% WDGS. The FSM were collected, air-dried or mixed with 3.0 L of water to represent dry or wet conditions, and then incubated at temperatures of 5°C, 15°C, 25°C, or 35°C. Static flux chambers were used to quantify GHG emissions over a 14-day period. Flux data for each diet × moisture combination were analyzed using repeated measures in time. The largest GHG emissions occurred under wet conditions at temperatures of 25°C and 35°C. Flux values for these conditions typically were significantly greater than measurements obtained on the same day at 5°C and 15°C. Mean emissions under wet conditions for CO2, CH4, and N2O were 35, 121, and 278 times greater, respectively, than emissions from dry FSM. The 0% WDGS diet produced mean CO2 and N2O flux measurements that were 1.8 and 1.5 times greater, respectively, than those obtained for the 35% WDGS diet. The 35% WDGS diet, in contrast, produced a mean CH4 emission rate that was 6 times greater than the 0% WDGS diet. Management for GHG mitigation should include design and/or maintenance of pen drainage to speed drying as well as the use of modified animal diets