Catherine Nyaki Adeya's research while affiliated with American University Washington D.C. and other places

... Like Jorge and Kumasi Hive, the cofounders of Dext felt an affinity to Kumasi-not just for the tech community built around the university, but also for other communities in the area, such as the Suame Magazine, in one of the oldest markets in Ghana. Described as a frugal manufacturing cluster (Yeebo 2016;Amedorme and Agbezudor 2013;Adeya 2008), Suame Magazine is home to generations of mechanics who have repaired and reengineered all things mechanical from anywhere in the world, particularly automobiles imported from the Global North. There is local respect for the technical expertise in Suame, but its scale is imagined to be limited due in part to the low formal education these mechanical experts have. ...

... Both poor internet infrastructure or fluctuations in internet connectivity and the high cost of international calls are major limitations to research progress and output between collaborators in Nigeria and abroad [58]. Digital infrastructure is still grossly underdeveloped in Nigeria with the country ranking 105 th out of a total of 137 for access to the internet [59]. ...

... In general, many things appeared to contribute to making things go wrong with CT functioning and adoption around the world: (a) many individuals do not have smartphones, especially in poor and disadvantaged countries [62,63]; (b) BLE technology was not originally designed to accurately estimate the distance between smartphones and thus is prone to errors [64]; (c) the efficacy of CT apps depend on user honesty (which is not always granted) and in the ease in reporting themselves as positive; (d) privacy and data security concerns [65][66][67][68]. In our specific case of Italian people who, despite having skills and opportunities to use CTs (i.e., no difficulties or barriers in using or accessing a smartphone), did not adopt it, we concluded that low levels of perceived efficacy of Immuni as a solution to deal with the pandemic, low-risk perception, trust in government and its action against COVID-19, together with a negative attitude towards CTs and not knowing others (i.e., family members, friends, and acquaintances) that already used the Immuni app may have contributed to an unsatisfying adoption of the system. ...

... Standard parametric Empirical Bayes methods (Efron and Morris, 1973b, Lindley, 1962, Morris, 1983, Stein, 1962 suggest using the marginal distribution of X to estimate the unknown hyperparameters. In this paper, inspired by Stein's Unbiased Risk Estimation (SURE) approach of constructing shrinkage estimators (Stein, 1981), we consider an alternative estimation method. ...