Management of Historic Radioactive Waste and Low‐level Waste Around the World

2021 ◽  
pp. 67-95
Author(s):  
Matt Herod

Port Hope, Ontario, located on the north shore of Lake Ontario, is home to some of largest amounts of low‐level radioactive waste contamination in the world. The waste is enriched in 238U and 226Ra, both of which decay into the invisible, radioactive gas radon‐222 (222Rn). This project is an attempt to determine the amounts of 222Rn that have migrated from scattered waste sites into selected streams and groundwater in the local watershed. This knowledge can be used to predict hydrogeological and geochemical conditions within the sample stream and surrounding area.


2020 ◽  
Author(s):  
Deon T. Benton ◽  
David H. Rakison

The ability to reason about causal events in the world is fundamental to cognition. Despite the importance of this ability, little is known about how adults represent causal events, what structure or form those representations take, and what the mechanism is that underpins such representations. We report four experiments with adults that examine the perceptual basis on which adults represent four-object launching sequences (Experiments 1 and 2), whether adults representations reflect sensitivity to the causal, perceptual, or causal and perceptual relation among the objects that comprise such sequences (Experiment 3), and whether such representations extend beyond spatiotemporal contiguity to include other low-level stimulus features such as an object’s shape and color (Experiment 4). Based on these results of the four experiments, we argue that a domain-general associative mechanism, rather a modular, domain-specific, mechanism subserves adults’ representations of four-object launching sequences.


Author(s):  
Jaroslav Tir ◽  
Johannes Karreth

Civil wars are one of the most pressing problems facing the world. Common approaches such as mediation, intervention, and peacekeeping have produced some results in managing ongoing civil wars, but they fall short in preventing civil wars in the first place. This book argues for considering civil wars from a developmental perspective to identify steps to assure that nascent, low-level armed conflicts do not escalate to full-scale civil wars. We show that highly structured intergovernmental organizations (IGOs, e.g. the World Bank or IMF) are particularly well positioned to engage in civil war prevention. Such organizations have both an enduring self-interest in member-state peace and stability and potent (economic) tools to incentivize peaceful conflict resolution. The book advances the hypothesis that countries that belong to a larger number of highly structured IGOs face a significantly lower risk that emerging low-level armed conflicts on their territories will escalate to full-scale civil wars. Systematic analyses of over 260 low-level armed conflicts that have occurred around the globe since World War II provide consistent and robust support for this hypothesis. The impact of a greater number of memberships in highly structured IGOs is substantial, cutting the risk of escalation by over one-half. Case evidence from Indonesia’s East Timor conflict, Ivory Coast’s post-2010 election crisis, and from the early stages of the conflict in Syria in 2011 provide additional evidence that memberships in highly structured IGOs are indeed key to understanding why some low-level armed conflicts escalate to civil wars and others do not.


2010 ◽  
Vol 27 (3) ◽  
pp. 231-239 ◽  
Author(s):  
Michael J. Wilkins ◽  
Francis R. Livens ◽  
David J. Vaughan ◽  
Jonathan R. Lloyd ◽  
Ian Beadle ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document