Shock-tube measurements of the homogeneous rate of decomposition on NH_3 in NH_3-AR mixtures

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The Anatomy of a Spin-Off

Section 355 of the Internal Revenue Code, which specially treats certain forms of corporate reorganization, has been the constant subject of both scholarly commentary and litigation. The experience of functioning under these spin-off provisions has resulted in clarification of the law and has also raised significant questions as to its scope. The precise limits of the section remain to some extent in a state of flux and await further exposition by the courts

Further shock-tube studies by infrared emission of the decomposition of ammonia

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Treatment increases stress-corrosion resistance of aluminum alloys

Overaging during heat treatment of the aluminum alloys immediately followed by moderate plastic deformation, preferably by shock loading achieves near optimum values of both yield strength and resistance to stress corrosion. Similar results may be obtained by substituting a conventional deformation process for the shock loading step

Trends in wages, underemployment, and mobility among part-time workers

This study examines three trends in the labor market experiences of part-time workers: (1) trends in real earnings; (2) trends in the extent of involuntary part-time work (underemployment); and (3) trends in the rate of exit from part-time work. Data are from Current Populating Surveys from the 1970s and 1980s. It considers whether observed changes in the position of part-time workers are due to changes in the attributes of part-time workers, the occupational and industrial location of part-time jobs, the process of selectivity into part-time employment, or changes in the returns to these factors. The questions addressed in this study have significant implications for research on poverty because, unless supplemented by other family earners, the low earnings levels of part-time job holders make them vulnerable to poverty and dependency.

An approximate Riemann solver for hypervelocity flows

We describe an approximate Riemann solver for the computation of hypervelocity flows in which there are strong shocks and viscous interactions. The scheme has three stages, the first of which computes the intermediate states assuming isentropic waves. A second stage, based on the strong shock relations, may then be invoked if the pressure jump across either wave is large. The third stage interpolates the interface state from the two initial states and the intermediate states. The solver is used as part of a finite-volume code and is demonstrated on two test cases. The first is a high Mach number flow over a sphere while the second is a flow over a slender cone with an adiabatic boundary layer. In both cases the solver performs well

Measurements of jet quenching with semi-inclusive charged jet distributions in Au+AuAu+Au collisions at sNN\sqrt{s_{NN}}=200 GeV

We report measurements of jet quenching in $Au+Au$ collisions at $\sqrt{s_{NN}}$=200 GeV, based on the semi-inclusive distribution of reconstructed charged particle jets recoiling from a high $p_T$ hadron trigger. Jets are reconstructed with the anti-k$_T$ algorithm ($R$=0.2 to 0.5), with low IR-cutoff of track constituents ($p_{T}>0.2$ GeV/c). Uncorrelated background is corrected using a novel mixed-event technique, with no fragmentation bias imposed by the correction procedure on the accepted recoil jet population. Corrected recoil jet distributions, reported in the range $0<p_{T,jet}^{ch}<30$ GeV/c, are used to measure jet yield suppression, jet energy loss, and intra-jet broadening. The first search for QCD Moli\`ere scattering of jets in hot QCD matter at RHIC is reported.Comment: Proceedings of the Quark Matter 2015 conferenc

The Changing Face of Medicine: Women Doctors and the Evolution of Health Care in America

[Excerpt] This book is a case study of one profession that plays a key role in the health care sector, which now represents about one seventh of the U.S. economy. It examines the most dramatic demographic change in this sector in the last century. But the issues we raise are likely to be of interest more broadly for what they say about the changing roles of women in contemporary society. Women\u27s entry into medicine is taken as dramatic evidence that the barriers to opportunity for women are rapidly falling in America. Does the experience of female physicians to date bear out this optimistic view? An alternative view is that gender roles remain deeply entrenched in our institutions and culture. Specifically, the gender division of household labor continues to constrain the choices of all women. The trade-offs between work and family may be clearest in the most demanding professions, such as law and medicine, which require a high degree of professional devotion. Our study builds on the fine histories of women in medicine written by Walsh, Morantz-Sanchez, and More. The analysis presented here focuses on the period since 1970, thus complementing the important studies of Bowman and colleagues and Bickel. Lorber examined the experiences of the generation of women who pioneered the transformation of the profession. With the benefit of additional decades of perspective, we are in a position to examine whether the role of gender in medicine is changing