ABSTRACT
Several databases track gastroenterology (GI) human resource (HR) numbers in Canada. They differ in the data which they collect and, hence, in their estimates of GI HR. The two most likely to reflect current HR are the Canadian Institute of Health Research (CIHI) and Canadian Medical Association (CMA) databases. The estimates of GI's generated by each of the databases correlate closely with each other. Approximately 50 trainees enter the adult GI workforce per year, and approximately five enter the pediatric group. We estimate that Canada as a whole has between 782 and 848 GIs or 2.14 GIs per 100,000 population in 2016. Six of the 10 provinces have fewer than two GIs per 100,000 population. National GI numbers are increasing by 6% per year. Validation studies are required.
ABSTRACT
We argue that ferromagnetic transition metal nanoparticles with fewer than approximately 100 atoms can be described by an effective Hamiltonian with a single giant spin degree of freedom. The total spin S of the effective Hamiltonian is specified by a Berry curvature Chern number that characterizes the topologically nontrivial dependence of a nanoparticle's many-electron wave function on magnetization orientation. The Berry curvatures and associated Chern numbers have a complex dependence on spin-orbit coupling in the nanoparticle and influence the semiclassical Landau-Liftshitz equations that describe magnetization-orientation dynamics.
