Application of DOT-MORSE coupling to the analysis of three-dimensional SNAP shielding problems

The use of discrete ordinates and Monte Carlo techniques to solve radiation transport problems is discussed. A general discussion of two possible coupling schemes is given for the two methods. The calculation of the reactor radiation scattered from a docked service and command module is used as an example of coupling discrete ordinates (DOT) and Monte Carlo (MORSE) calculations

ORGANIZED LABOR AND THE RECOVERY ACT

The enactment of the National Industrial Recovery Act last June inevitably has brought to the fore a number of questions which as yet remain unanswered, including those connected with the application and interpretation of Section 7(a) of the Recovery Act, the subject of this article. Under this section, hailed by labor as a new Magna Charta, employees are apparently given two interrelated rights - the right to organize with no discrimination against them by employers as a result thereof, and the right to collective bargaining through representatives of their own choosing. Employers are prohibited from interfering with such rights through intimidation or coercion, and yellow dog\u27\u27 contracts are specifically outlawed

The Pocket Mouse (Perognathus Flavescens): A New Species in Iowa

The pocket mouse, as near as we can determine, has not been reported as occurring within the state. The purpose of this report, therefore, is to give a description of the species Perognathus ftavescens obtained in Black Hawk County, Iowa, during the summer of 1936

Responsibilities in Tax Practice, before The American Institute of Certified Public Accountants 83rd Annual Meeting, September 23, 1970, New York, N. Y.

https://egrove.olemiss.edu/aicpa_assoc/2048/thumbnail.jp

Frank H. Knight on the “Entrepreneur Function” in Modern Enterprise

This Article explores Knight’s theory of the entrepreneurial function in the modern enterprise in two contexts. The first is Berle and Means’s arguments, in which I offer a reconstruction of Knight that responds to the argument in The Modern Corporation regarding both the corporate separation of ownership and control, and the potential for industrial policy to promote the social interest. The second context I use to explore Knight’s understanding of entrepreneurship is his later arguments regarding the problem of intelligent control in a democratic society. From the 1930s to the end of his life in the early 1970s, Knight increasingly focused on the nature of a free, democratic society and the attendant problems for a social science that wishes to inform democratic action. While it is convenient to divide his life’s work into two parts—the first focused on economic theory (ending in the early 1940s) and the second on social philosophy—the two are connected by a conception of human and social action in the midst of uncertainty that runs from Risk, Uncertainty, and Profit to Knight’s last book, Intelligence and Democratic Action

LXXXI. Description of an instrument by which the moon's distance from the sun or a fixed star may be cleared from the effect of refraction and parallax;—also of a new reflecting goniometer

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Sustained impact of drought on wet shrublands mediated by soil physical changes

13 páginas.-- 6 figuras.-- 52 referencias.-- The online version of this article (doi:10.1007/s10533-014-0059-y) contains supplementary material, which is available to authorized users.-- Domínguez, María Teresa et al...Projected climate warming may substantially increase carbon emissions from wet organic soils, contributing to a positive feedback between the terrestrial carbon cycle and climate change. Evidence suggests that in these soils the stimulation of soil respiration by warming can be sustained over long periods of time due to the large availability of C substrates. However, the long-term response of wet organic soils to drought remains uncertain. Organo-mineral soils might be particularly vulnerable, because of their limited soil moisture pool to buffer drought events. Using a whole-ecosystem climate-change experiment in North Wales (UK) we show that soil respiration in podzolic (organo-mineral) soils from wet shrublands is more vulnerable to recurrent drought than to warming, and that the drought impact does not attenuate at decadal time scales. Stimulation of soil respiration by drought was linked to major changes in soil structure that led to a 54 % reduction in water holding capacity compared to control. Bryophyte abundance was found to buffer soil moisture losses, moderating soil CO2 efflux under warming. As there was no evidence of change in plant productivity to offset the increased soil C emissions under drought, this response may result in a positive climate feedback. The results indicate the potentially critical role that changes in sub-dominant vegetation and in soil physical properties may have in determining climate change impacts on soil C dynamics.We thank all the CEH staff members who have contributed to the experiment establishment and maintenance over the years, in particular David Williams. This research was funded by the EU projects CLIMOOR, VULCAN and INCREASE FP7-INFRASTRUCTURE-2008-1 (Grant Agreement no. 227628)—the INCREASE project. M.T.D was supported by two postdoctoral fellowships awarded by the Spanish National Science and Technology FoundationPeer reviewe

Robust inference for geographic regression discontinuity designs: assessing the impact of police precincts

We study variation in policing outcomes attributable to differential policing practices in New York City (NYC) using geographic regression discontinuity designs (GeoRDDs). By focusing on small geographic windows near police precinct boundaries we can estimate local average treatment effects of precincts on arrest rates. The standard GeoRDD relies on continuity assumptions of the potential outcome surface or a local randomization assumption within a window around the boundary. These assumptions, however, can easily be violated in realistic applications. We develop a novel and robust approach to testing whether there are differences in policing outcomes that are caused by differences in police precincts across NYC. In particular, our test is robust to violations of the assumptions traditionally made in GeoRDDs and is valid under much weaker assumptions. We use a unique form of resampling to identify new geographic boundaries that are known to have no treatment effect, which provides a valid estimate of our test statistic's null distribution even under violations of standard assumptions. This procedure gives substantially different results in the analysis of NYC arrest rates than those that rely on standard assumptions, thereby providing more robust tests of the effect of police precincts on arrest rates in NYC

The Fate of Arginine and Proline Carbon in Squid Tissues

The metabolism of proline and arginine was investigated in kidney, gill, and heart of the pelagic squid, Symplectoteuthis. The rates of CO2 release from 14C-proline exceeded the rates from 14C-arginine. The metabolic rate of arginine and proline was assessed by monitoring the incorporation of arginine-derived carbon into various intermediates. Arginine was metabolized, through ornithine, to proline as well as to glutamate and various subsequent derivatives (alanine, octopine, aspartate, and carboxylic acids). The same components became labeled using 14C-proline as the starting substrate, but only the gill was capable of converting proline to arginine via the urea cycle. In addition, 14C-proline oxidation rates were high enough to exceed those of 14C-glucose in at least three tissues, kidney, heart, and inner mantle muscle