The surge in "unconventional" oil projects such as Alberta's Tar Sands in the last decade signals a shift in global production from relatively accessible conventional reserves to "frontier" oil. This paper examines one aspect of the oil/environment tension – the environmental regulatory system surrounding the tar sands – by adopting...
Social engagement, or shared attention between a child and caregiver, is a critical process for language and social development. Although previous EEG studies have investigated child social processing in closely controlled, experimental studies, no study has examined the interactive, reciprocal process of naturalistic social engagement. In my first paper, we...
To analyze institutional dynamics, it is first necessary to determine when change has occurred, when not, and the nature and magnitude of change. If social institutions are defined in terms of rules, then a change of rules forms the core of institutional change. A number of complications arise from the...
Are the lending programs of the International Monetary Fund bad for democracy? The conventional wisdom is that the implementation of IMF conditional lending programs triggers cycles of austerity, social protest, and government repression that result in democratic backsliding. We present evidence which suggests that the conventional wisdom is wrong. We...
This essay discusses the role of the ulama (Islamic scholars) in the 2007 Nigerian elections. Based on interviews and the political activities and statements of the twelve members of the ulama, most of whom are from Kano, the author observes four areas of consensus among these scholars: 1) The compatiblity...
Most scholars think of courts as a single category of adjudicative bodies or triadic dispute adjudication. But courts play a variety of roles in the domestic political system. Increasingly, the roles and tasks delegated to International Courts (ICs) mimic in form and content the roles and tasks delegated to courts...
Recent discoveries of black hole (BH) candidates in galactic and extragalactic globular clusters (GCs) have ignited interest in understanding how BHs dynamically evolve in a GC and the number of BHs (NBH) that may still be retained by today's GCs. Numerical models show that even if stellar-mass BHs are retained...
On February 22, 2022, I gave a talk hosted by the African Studies Program of Georgetown University. Two days later, Russian battalions were sent across Ukraine’s borders by President Vladimir Putin. In real time, viewers around the world have seen immense distress unleashed on innocent citizens. In Africa, distress has...
Regulatory T (Treg) cells are required to control immune responses and maintain homeostasis, but are a significant barrier to antitumor immunity. Conversely, Treg instability, characterized by loss of the master transcription factor Foxp3 and acquisition of proinflammatory properties, can promote autoimmunity and/or facilitate more effective tumor immunity. A comprehensive understanding...
Halide perovskites, AMX3 (A = monocation, B = Ge, Sn, or Pb, and X = halogen), present a versatile class of solution-processable semiconductors made from earth abundant materials with outstanding electrical and optical properties. Their solar cell efficiencies have dramatically increased from ~9% to ~22% in less than five years...
