On the imaginary parts of chromatic root

While much attention has been directed to the maximum modulus and maximum real part of chromatic roots of graphs of order $n$ (that is, with $n$ vertices), relatively little is known about the maximum imaginary part of such graphs. We prove that the maximum imaginary part can grow linearly in the order of the graph. We also show that for any fixed $p \in (0,1)$, almost every random graph $G$ in the Erd\"os-R\'enyi model has a non-real root.Comment: 4 figure

Session C9: Cle Elum Dam Fish Passage: Novel, Research Driven Designs to allow Downstream Passage for Juvenile Salmonids

Abstract: When Cle Elum Dam (Washington, USA) was constructed, a highly productive sockeye salmon fishery was lost. As part of the proposed Yakima Basin Integrated Plan, fish passage will be restored at this site. For the migrating adults, a trap and haul fish collection facility will be constructed. For downstream juvenile salmon passage, a selective level outlet works, helical fish slide, and outfall will be constructed. The juvenile passage features groundbreaking research; primarily that of the helical fish slide. The presentation will cover aspects of the history of the project, the research driven designs, and the final designs (to be completed in 2015). The presentation can include computational fluid dynamics videos, descriptions of the physical modeling, renderings of the 3D facilities, and suitability of this design for other locations

Bowling online : the Internet and the new social capital.

The decline thesis proponents in the social capital literature have largely ignored the fastest growing venue for new social capital formation – the Internet. We argue that the Internet is making a larger impact than the current research acknowledges. Using survey data from the Pew Internet & American Life Project combined with a survey of college students, we confirm a strong positive relationship between online social networking and political participation. Further, we present evidence that, at least in 2008 election, there was a bias toward voting for Democrats among those who utilized online social networking services including Facebook and Twitter. The implications of these results are discussed

The electronic ballot box : class, age and racial bias on the Internet.

This research creates a theoretical framework for understanding the effect of Internet voting on the electorate. Based on standard Downsian rational choice voting theory, we claim that Internet voting lowers the cost of voting for certain voting demographics based upon race, age, and income.We further contend that this electoral advantage may crystallize the growing turnout disparity be-tween demographic groups. The theory is tested using Bayesian inferential methods with data from the Internet turnout in the 2000 Arizona Democratic Presidential Primary merged with demographic data obtained from the 2000 Census. Our findings lend support for the theory that the Internet provides an electoral bias towards white voters, younger voters, and to the more affluent