210 research outputs found
Open-Access Crime Maps as Digital Rhetoric and Crime Reporting in Chicago: Using New Aesthetic Overlaps to Change Journalism and Citizen Interaction
Get PDFWhen data mining meets the rhetoric of maps and crowdsourcing in the age of digital journalism, we can use the abundance of data to change, modify or reinforce particular reporting behaviors or journalism policies. We also live in an age of overlapping boundaries of technologies, algorithms and human interfaces---it is within these overlaps that we find anomalies, glitches , and digital errata that can expose different perceptions of the same artifacts and algorithms. The overlapping of the heterogeneous network, as James Bridle calls it, is known as The New Aesthetic. It is not a movement, but a series of artifacts ... which recognize differences, the gaps in our distant but overlapping realities . One real life example is the exploration of Chicago crime reporting via the Chicago Tribune, compared to the police-sourced CrimeReports.com, and how metadata might reshape the nature of how crime is reported, using digital crime mapping analysis and digital rhetorical analysis to find glitches and anomalies---where our communications with the mathematical, visual and computational facets of technology often produce surprising results. In turn, the public will receive a new perspective and offer a feedback loop to the newspaper. Crowd-sourced citizen reporting augments police reports, creating a collaborative set of data, change the face of sensationalism and return crime reporting to a basic data-driven level. In short, crime reporting will become organic, and one outcome might be that the citizens will put more trust back into established newspapers for the production of mass data and innovative practices. Additionally, the use of digital cartography is explored here as yet another tool to engage the social media user, while benefitting the news media source
Liquefaction Analysis of Three Pleistocene Sand Deposits that did not Liquefy During the 1886 Charleston, South Carolina Earthquake based on Shear Wave Velocity and Penetration Resistance
Get PDFThe results of geotechnical investigations at three sites located in the South Carolina Coastal Plain are presented in this thesis. The three sites are called the Hobcaw Barony Borrow Pit site located near Georgetown, SC; the Rest Area Ponds site near Walterboro, SC; and the Lowcountry Sand & Gravel site, also near Walterboro. Near-surface sand deposits at these sites ranged in geologic age from 200,000 to greater than 1,000,000 years. These three sites lie well outside the region of most liquefaction effects observed following the 1886 Charleston earthquake. Investigations conducted at the sites include seismic cone penetration tests with pore pressure measurements (SCPTu), dilatometer tests (DMT), standard penetration tests (SPT), seismic crosshole tests, and fixed piston sampling. Laboratory investigations on samples collected include grain size, Atterberg limit, and consolidation tests. Sand layers most susceptible to liquefaction are identified at each site. For these critical sand layers, ratios of measured Vs to Vs estimated (MEVR) using relationships proposed by Andrus et al. (2004a) are 1.28, 1.13, and 1.36 at the Borrow Pit, Rest Area Ponds, and Lowcountry Sand & Gravel sites, respectively. These MEVRs suggest geotechnical ages of 16,000, 240, and 152,000 years for each site, respectively, based on the MEVR-time relationship presented in Andrus et al. (2009). The critical sand layers at each site are evaluated for liquefaction potential using shear wave velocity-based and penetration-based cyclic resistance ratio (CRR) curves adjusted for age/cementation. The results of the evaluation indicate low probability of liquefaction at the three sites during the 1886 Charleston earthquake. Based on the 2% probability of exceedance in 50 years earthquake scenario suggested by the 2008 USGS Hazard Map, moderate liquefaction is predicted for the Borrow Pit and Rest Area sites and marginal liquefaction is predicted at the Lowcountry Sand & Gravel site. Predictions based on shear wave velocity and penetration are in good general agreement with each other when age/cementation corrections are applied
- …
