An Examination of the Characteristics and Perceptions of School Resource Officers in Rural and Urban Oklahoma Schools

Fueled by concerns about school violence, the number of School Resource Officers (SROs) in the United States has soared. SROs are law enforcement officers who work in elementary and secondary schools and who are tasked to increase school safety. As of 2016, 48 percent of US public schools had SROs, compared to less than one percent in the 1970s, yet there are few studies that measure their effects. In particular, the literature largely ignores rural/urban differences. This study uses survey data from SROs working in public schools in Oklahoma to understand their roles and to determine if there are differences between rural and urban SROs. We look at jurisdiction and school characteristics as well as SRO perceptions of disciplinary practices, school climate, referrals, and community involvement. Identifying variability in these areas is a requisite first step in understanding the effect of the SRO on school safety

Geochemical and Strontium Isotope Characterization of Produced Waters from Marcellus Shale Natural Gas Extraction

Extraction of natural gas by hydraulic fracturing of the Middle Devonian Marcellus Shale, a major gas-bearing unit in the Appalachian Basin, results in significant quantities of produced water containing high total dissolved solids (TDS). We carried out a strontium (Sr) isotope investigation to determine the utility of Sr isotopes in identifying and quantifying the interaction of Marcellus Formation produced waters with other waters in the Appalachian Basin in the event of an accidental release, and to provide information about the source of the dissolved solids. Strontium isotopic ratios of Marcellus produced waters collected over a geographic range of ∼375 km from southwestern to northeastern Pennsylvania define a relatively narrow set of values (εSr SW = +13.8 to +41.6, where εSr SW is the deviation of the 87Sr/86Sr ratio from that of seawater in parts per 104); this isotopic range falls above that of Middle Devonian seawater, and is distinct from most western Pennsylvania acid mine drainage and Upper Devonian Venango Group oil and gas brines. The uniformity of the isotope ratios suggests a basin-wide source of dissolved solids with a component that is more radiogenic than seawater. Mixing models indicate that Sr isotope ratios can be used to sensitively differentiate between Marcellus Formation produced water and other potential sources of TDS into ground or surface waters