Georgia State University

About: Georgia State University is a education organization based out in Atlanta, Georgia, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 13988 authors who have published 35895 publications receiving 1164332 citations. The organization is also known as: GSU & Georgia State.

Counterfactual Thinking and Impact Evaluation in Environmental Policy

Abstract: Impact evaluations assess the degree to which changes in outcomes can be attributed to an intervention rather than to other factors. Such attribution requires knowing what outcomes would have looked like in the absence of the intervention. This counterfactual world can be inferred only indirectly through evaluation designs that control for confounding factors. Some have argued that environmental policy is different from other social policy fields, and thus attempting to establish causality through identification of counterfactual outcomes is quixotic. This chapter argues that elucidating causal relationships through counterfactual thinking and experimental or quasi-experimental designs is absolutely critical in environmental policy, and that many opportunities for doing so exist. Without more widespread application of such approaches, little progress will be made on building the evidence base in environmental policy. © Wiley Periodicals, Inc.

Elements of Strategic Planning and Management in Municipal Government: Status after Two Decades

Abstract: This article focuses on the use of strategic planning and management processes in municipal governments with populations over 25,000. Strategic planning has been used in municipalities for 20 years now, but little is known about how it is used and the results obtained. In particular, we explore whether municipal governments tie other components of the overall strategic management process to their strategic plans. Findings do not show a dramatic expansion in the use of strategic planning, but there is some evidence of growing sophistication, as demonstrated by links to other management and decision-making activities. Managers were enthusiastic about their experiences with strategic planning and largely satisfied with their achievement of goals and objectives. Overall, we find a raising of the bar as far as strategic planning is concerned, but the use of comprehensive strategic management is only beginning to develop in a small number of leading-edge municipalities.

The High Angular Resolution Multiplicity of Massive Stars

Abstract: : We present the results of a speckle interferometric survey of Galactic massive stars that complements and expands upon a similar survey made over a decade ago The speckle observations were made with the Kitt Peak National Observatory and Cerro Tololo Inter-American Observatory 4 m telescopes and USNO speckle camera, and they are sensitive to the detection of binaries in the angular separation regime between 0"03 and 5" with relatively bright companions (deltaV < 3) We report on the discovery of companions to 14 OB stars In total we resolved companions of 41 of 385 O-stars (11%), 4 of 37 Wolf-Rayet stars (11%), and 89 of 139 B-stars (64%; an enriched visual binary sample that we selected for future orbital determinations) We made a statistical analysis of the binary frequency among the subsample that are listed in the Galactic O Star Catalog by compiling published data on other visual companions detected through adaptive optics studies and/or noted in the Washington Double Star Catalog and by collecting published information on radial velocities and spectroscopic binaries We find that the binary frequency is much higher among O-stars in clusters and associations compared to the numbers for field and runaway O-stars, consistent with predictions for the ejection processes for runaway stars We present a first orbit for the O-star delta Orionis; a linear solution of the close, apparently optical, companion of the O-star iota Orionis; and an improved orbit of the Be star delta Scorpii Finally, we list astrometric data for another 249 resolved and 221 unresolved targets that are lower mass stars that we observed for various other science programs

Absence of suppression in particle production at large transverse momentum in √sNN = 200 GeV d + Au collisions

Abstract: Transverse momentum spectra of charged hadrons with p(T)<8 GeV/c and neutral pions with p(T)<10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in d+Au collisions at sqrt[s(NN)]=200 GeV. The measured yields are compared to those in p+p collisions at the same sqrt[s(NN)] scaled up by the number of underlying nucleon-nucleon collisions in d+Au. The yield ratio does not show the suppression observed in central Au+Au collisions at RHIC. Instead, there is a small enhancement in the yield of high momentum particles.