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The various effects of the Fe-based alloys on the modification of the [[delta].sub.1] and [[delta].sub.5] electron states for magnetic tunnel junctions are determined. The nature of the alloy metal is shown to have a significant impact on these states.

We have studied the modification of the electron states with Δ1 and Δ5 symmetries, induced by alloying effects in bcc Fe-based alloys. The corresponding density of states has been calculated for disordered alloys with the code SPR-KKR, which is based on the density-functional theory and uses the Korringa-Kohn-Rostoker method and the coherent potential approximation for the description of the chemical disorder. We have studied the modification of the Δ1 and Δ5 densities of states of Fe1-xMx alloys as a function of the nature of the alloy metal M (M=V, Cr, and Co) and as a function of its chemical content x. [ABSTRACT FROM AUTHOR]

We examine family physicians' responses to financial incentives for medical services in Ontario, Canada. We use administrative data covering 2003-2008, a period during which family physicians could choose between the traditional fee for service (FFS) and blended FFS known as the Family Health Group (FHG) model. Under FHG, FFS physicians are incentivized to provide comprehensive care and after-hours services. A two-stage estimation strategy teases out the impact of switching from FFS to FHG on service production. We account for the selection into FHG using a propensity score matching model, and then we use panel-data regression models to account for observed and unobserved heterogeneity. Our results reveal that switching from FFS to FHG increases comprehensive care, after-hours, and nonincentivized services by 3%, 15%, and 4% per annum. We also find that blended FFS physicians provide more services by working additional total days as well as the number of days during holidays and weekends. Our results are robust to a variety of specifications and alternative matching methods. We conclude that switching from FFS to blended FFS improves patients' access to after-hours care, but the incentive to nudge service production at the intensive margin is somewhat limited., (© 2019 John Wiley & Sons, Ltd.)

In combining spin- and symmetry-resolved photoemission, magnetotransport measurements and ab initio calculations we detangled the electronic states involved in the electronic transport in Fe(1-x)Co(x)(001)/MgO/Fe(1-x)Co(x)(001) magnetic tunnel junctions. Contrary to previous theoretical predictions, we observe a large reduction in TMR (from 530 to 200% at 20 K) for Co content above 25 atomic% as well as anomalies in the conductance curves. We demonstrate that these unexpected behaviors originate from a minority spin state with Δ(1) symmetry that exists below the Fermi level for high Co concentration. Using angle-resolved photoemission, this state is shown to be a two-dimensional state that occurs at both Fe(1-x)Co(x)(001) free surface, and more importantly at the interface with MgO. The combination of this interface state with the peculiar density of empty states due to chemical disorder allows us to describe in details the complex conduction behavior in this system.

Objectives: To investigate the impact of the mode of remuneration on the work activities of Canadian family physicians on: (a) direct patient care in office/clinic, (b) direct patient care in other settings and (c) indirect patient care., Methods: Because the mode of remuneration is potentially endogenous to the work activities undertaken by family physicians, an instrumental variable estimation procedure is considered. We also account for the fact that the determination of the allocation of time to different activities by physicians may be undertaken simultaneously. To this end, we estimate a system of work activity equations and allow for correlated errors., Results: Our results show that the mode of remuneration has little effect on the total hours worked after accounting for the endogeneity of remuneration schemes; however it does affect the allocation of time to different activities. We find that physicians working in non-fee-for-service remuneration schemes spend fewer hours on direct patient care in the office/clinic, but devote more hours to direct patient care in other settings, and more hours on indirect patient care., Conclusions: Canadian family physicians working in non-fee-for-service settings spend fewer hours on direct patient care in the office/clinic, but devote more hours to direct patient care in other settings and devote more hours to indirect patient care. The allocation of time in non-fee-for-service practices may have some implications for quality improvement., (Copyright © 2010 Elsevier Ireland Ltd. All rights reserved.)