What has become of the "stability-through-inflation" argument?

In this article, James B. Bullard and Alvin L. Marty begin by summarizing some popular arguments for positive steady-state rates of inflation based on the idea that a certain amount of inflation stabilizes economic performance. Then, synthesizing a number of disparate results in a single framework and using a general class of money-demand functions, they find that the stability-through-inflation arguments have either been completely replaced (by potent but unsettling results based on rational expectations) or called into question (by more sophisticated treatments of the adaptive expectations hypothesis).Inflation (Finance)

Race-Conscious Diversity Admissions Programs: Furthering a Compelling Interest

This Article argues that narrowly tailored, race-conscious admissions programs can be employed to achieve a more diverse student body and consequently a more enlightened and egalitarian society. An admissions body which looks beyond traditional academic indicators and explores the whole person of each applicant will matriculate a group of students with a wide variety of race, gender, class and other backgrounds, thereby fostering a robust exchange of ideas among these students. Pointing to the enduring precedential value of Bakke as well as the ideological makeup of the Supreme Court, this Article asserts that the Courts would likely uphold a program aimed at promoting diversity. The Article concludes by describing the ideal diversity program and why Asian Americans, in particular, should support these program

Vulnerability and Post-Stroke Experiences of Working-Age Survivors During Recovery

Survivors who experience stroke of mild to moderate severity are typically discharged home quickly, with only minimal referral for rehabilitation follow-up or support to meet specific needs in recovery. Particular vulnerabilities of younger, higher functioning stroke survivors have received some recognition in international literature in recent years. This article reports on findings of a small Australian qualitative study focusing on recovery and return to work experiences of young higher functioning female stroke survivors, in particular exploring experiences of post-stroke vulnerability from participants’ own perspectives. Our research adds depth and nuance to this developing area of interest and research. Our findings include survivors’ reflections on the consequences of delayed diagnosis, the impacts of empowering and disempowering interactions with health care professionals, a general lack of access to psychosocial rehabilitation, and frustrations of financial hardship. Implications for health professionals, service systems, and income support provision are discussed, along with directions for future research

Coupled noble gas-hydrocarbon evolution of the early Earth atmosphere upon solar UV irradiation

International audienceUsing a new photochemical model of the Earth's early atmosphere, the relationship between noble gas photoionization and organic photochemistry has been investigated from the Archean eon to the present day. We have found that the enhanced UV emission of the young Sun triggered a peculiar atmospheric chemistry in a CH4-rich early atmosphere that resulted in the increased formation of an organic haze, similar to the preliminary results of a previous study (Ribas et al., 2010). We have investigated the interaction between this haze and noble gases photoionized by the UV light from the younger Sun. Laboratory experiments have shown indeed that ionized xenon trapping into organics (1) is more efficient that other ionized noble gases trapping and (2) results in a significant enrichment of heavy xenon isotopes relative to the light ones (e.g., Frick et al., 1979; Marrocchi et al., 2011). We find moreover preferential photoionization of xenon that peaks at an altitude range comparable to that of the organic haze formation, in contrast to other noble gases. Trapping and fractioning of ionized xenon in the organic haze could therefore have been far more efficient than for other noble gases, and could have been particularly effective throughout the Archean eon, since the UV irradiation flux from the young Sun was expected to be substantially higher than today (Ribas et al., 2010; Claire et al., 2012). Thus we suspect that the unique isotopic fractionation of atmospheric xenon and its elemental depletion in the atmosphere relative to other noble gases, compared to potential cosmochemical components, could have resulted from a preferential incorporation of the heaviest xenon isotopes into organics. A fraction of atmospheric xenon could have been continuously trapped in the forming haze and enriched in its heavy isotopes, while another fraction would have escaped from the atmosphere to space, with, or without isotope selection of the lightest isotopes. The combination of these two processes over long periods of time provides thereby a key process for explaining the evolution of its isotopic composition in the atmosphere over time that has been observed in Archean archives (Pujol et al., 2011)

Ni abundance in the core of the Perseus Cluster: an answer to the significance of resonant scattering

Using an XMM-Newton observation of the Perseus cluster we show that the excess in the flux of the 7-8 keV line complex previously detected by ASCA and BeppoSAX is due to an overabundance of Nickel rather than to an anomalously high Fe He$\beta$/Fe He$\alpha$ ratio. This observational fact leads to the main result that resonant scattering, which was assumed to be responsible for the supposed anomalous Fe He$\beta$/Fe He$\alpha$ ratio, is no longer required. The absence of resonant scattering points towards the presence of significant gas motions (either turbulent or laminar) in the core of the Perseus cluster.Comment: 29 pages, 10 bw figures, accepted for publication in the Astrophysical Journa