Civil and Environmental Engineering) Control of Vibratory Energy Harvesters in the Presence of Nonlinearities and Power-Flow Constraints by Ian L. Cassidy Department of Civil and Environmental Engineering Duke University

While eco-balances and material flow networks have become common parts of Environmental Management Information Systems (EMIS) to analyse the material flows within a company, discrete event simulation has not yet been used widely in this domain. This paper argues for combining discrete event simulation with material flow analysis in order to analyse both the environmental and economic impact of ...

We analyzed 75,555 test-day milk flow records from 2175 primiparous Holstein cows that calved between 1997 and 2005. Milk flow was obtained by dividing the mean milk yield (kg) of the 3 daily milking by the total milking time (min) and was expressed as kg/min. Milk flow was grouped into 43 weekly classes. The analyses were performed using a single-trait Random Regression Models that included di...

Practical and accurate microbial assessment of environmental systems is predicated on the detection and quantification of various microbial parameters in complex matrices. Traditional growth-based assays, considered to be both slow and biased, are increasingly being replaced by optical detection methods such as flow cytometry. Flow cytometry (FCM) offers high-speed multi-parametric data acquisi...

Dams, diversion of water, invasive species, overharvesting and pollution are degrading rivers and wetlands. Climate change may exacerbate impacts of these threats through predicted reductions in rainfall and increased temperature, decreasing flow and altering timing and variability of flow regimes. Papers in this special issue identify conservation-management strategies for wetlands and rivers ...