Cross-Assignment Discrimination in Pay: A Test Case of Major League Baseball

The traditional Becker/Arrow style model of discrimination depicts majority and minority and workers as perfectly substitutable inputs, implying that all workers have the same job assignment. The model is only appropriate for determining whether pay differences between, for example, whites and non-whites doing job assignment A are attributable to prejudice ('within-assignment discrimination'); It is inappropriate, however, for determining whether pay differences between whites in job assignment A and non-whites in job assignment B reflect discriminatory behaviour ('cross-assignment discrimination'). We test the model of such cross assignment discrimination developed by Bodvarsson and Sessions (2011) using data on Major League Baseball hitters and pitchers for four different seasons during the 1990s, a decade during which monopsony power fell. We find strong evidence of ceteris paribus racial pay differences between hitters and pitchers, as well as evidence that cross-assignment discrimination varies with labour market structure.wage discrimination, complementarity, monopsony power

The Measurement of Racial Discrimination in Pay between Job Categories: Theory and Test

The traditional model of taste discrimination in labor markets presumes perfect substitution, making it unsuitable for the measurement of discrimination across job assignments. We extend the model to explain cross-assignment discrimination and test it on data from Major League Baseball. A competitive firm with a Generalized Leontief production function fills each job assignment with whites and nonwhites in an environment of customer prejudice. According to the model, cross-assignment discrimination depends upon racial productivity differences, the productivity x prejudice interaction, technology, relative labor supply and racial integration. We find strong evidence of ceteris paribus racial salary differences between hitters and pitchers.wages, discrimination, imperfect substitutability, integration

Cross-assignment discrimination in pay: A test case of major league baseball

The traditional Becker/Arrow style model of discrimination depicts majority and minority and workers as perfectly substitutable inputs, implying that all workers have the same job assignment. The model is only appropriate for determining whether pay differences between, for example, whites and non-whites doing job assignment A are attributable to prejudice ('within-assignment discrimination'); It is inappropriate, however, for determining whether pay differences between whites in job assignment A and non-whites in job assignment B reflect discriminatory behaviour ('cross-assignment discrimination'). We test the model of such cross assignment discrimination developed by Bodvarsson and Sessions (2011) using data on Major League Baseball hitters and pitchers for four different seasons during the 1990s, a decade during which monopsony power fell. We find strong evidence of ceteris paribus racial pay differences between hitters and pitchers, as well as evidence that cross-assignment discrimination varies with labour market structure

The measurement of racial discrimination in pay between job categories: theory and test

The traditional model of taste discrimination in labor markets presumes perfect substitution, making it unsuitable for the measurement of discrimination across job assignments. We extend the model to explain cross-assignment discrimination and test it on data from Major League Baseball. A competitive firm with a Generalized Leontief production function fills each job assignment with whites and nonwhites in an environment of customer prejudice. According to the model, cross-assignment discrimination depends upon racial productivity differences, the productivity x prejudice interaction, technology, relative labor supply and racial integration. We find strong evidence of ceteris paribus racial salary differences between hitters and pitchers

A multi-feedzone wellbore simulator

A multi-feedzone wellbore simulator has been developed. This computer code is quite general as it enables one to compute downhole conditions in wells with an arbitrary number of feedzones during discharge or injection. The simulator is applied to flowing pressure and temperature surveys from various wells in Mexico, Iceland and Kenya. It is demonstrated that such a model can be used to estimate flow rates and enthalpies of individual feedzones

The effects of immigration on wages: An application of the structural skill-cell approach

This paper investigates how recent immigration inflows from 2002 to 2008 have affected wages in Switzerland. This period is of particular interest as it marks the time during which the bilateral agreement with the EU on the free cross-border movement of workers has been effective. Since different types of workers are likely to be unevenly affected by recent immigration inflows, we follow the ”structural skill-cell approach” as for example employed by Borjas (2003) and Ottaviano and Peri (2008). This paper provides two main contributions. First, we estimate empirically the elasticities of substitution between different types of workers in Switzerland. Our results suggest that natives and immigrants are imperfect substitutes. Regarding different skill levels, the estimates indicate that workers are imperfect substitutes across broad education groups and across different experience groups. Second, the estimated elasticities of substitution are used to simulate the impact on domestic wages using the actual immigration inflows from 2002 to 2008. For the long run, the simulations produce some notable distributional consequences across different types of workers: While previous immigrants incur wage losses (−1.6%), native workers are not negatively affected on average (+0.4%). In the short run, immigration has a negative macroeconomic effect on the average wage, which, however, gradually dies out in the process of capital adjustment

An Improvement to DCPT: The Particle Transfer Probability as a Function of Particle's Age

Multi-scale features of transport processes in fractured porous media make numerical modeling a difficult task of both conceptualization and computation. Dual-continuum particle tracker (DCPT) is an attractive method for modeling large-scale problems typically encountered in the field, such as those in unsaturated zone (UZ) of Yucca Mountain, Nevada. The major advantage is its capability to capture the major features of flow and transport in fractured porous rock (i-e., a fast fracture sub-system combined with a slow matrix sub-system) with reasonable computational resources. However, like other conventional dual-continuum approach-based numerical methods, DCPT (v1.0) is often criticized for failing to capture the transient features of the diffusion depth into the matrix. It may overestimate the transport of tracers through the fractures, especially for the cases with large fracture spacing, and predict artificial early breakthroughs. The objective of this study is to develop a new theory for calculating the particle transfer probability to captures the transient features of the diffusion depth into the matrix within the framework of the dual-continuum random walk particle method (RWPM)

Semianalytical solutions of radioactive or reactive tracer transport in layered fractured media

In this paper, semianalytical solutions are developed for the problem of transport of radioactive or reactive tracers (solutes or colloids) through a layered system of heterogeneous fractured media with misaligned fractures. The tracer transport equations in the matrix account for (a) diffusion, (b) surface diffusion (for solutes only), (c) mass transfer between the mobile and immobile water fractions, (d) linear kinetic or equilibrium physical, chemical, or combined solute sorption or colloid filtration, and (e) radioactive decay or first order chemical reactions. Any number of radioactive decay daughter products (or products of a linear, first-order reaction chain) can be tracked. The tracer-transport equations in the fractures account for the same processes, in addition to advection and hydrodynamic dispersion. Additionally, the colloid transport equations account for straining and velocity adjustments related to the colloidal size. The solutions, which are analytical in the Laplace space, are numerically inverted to provide the solution in time and can accommodate any number of fractured and/or porous layers. The solutions are verified using analytical solutions for limiting cases of solute and colloid transport through fractured and porous media. The effect of important parameters on the transport of {sup 3}H, {sup 237}Np and {sup 239}Pu (and its daughters) is investigated in several test problems involving layered geological systems of varying complexity. {sup 239}Pu colloid transport problems in multilayered systems indicate significant colloid accumulations at straining interfaces but much faster transport of the colloid than the corresponding strongly sorbing solute species

Geothermal injection monitoring with dc resistivity methods

Injection into an idealized geothermal reservoir is considered, assuming that the injected water differs in temperature and salinity from in-place fluids. Changes in formation resistivity resulting from temperature and salinity variations are evaluated, and numerical simulation methods are used to predict effects which would be observed by means of dc resistivity monitoring. The resistivity calculations were performed using a three-dimensional computer code to simulate results from two different resistivity arrays, a dipole-dipole array and a downhole-surface array. Calculations show that the dipole-dipole method is relatively insensitive to changes due to injection , but downhole-surface measurements are very sensitive. From the simulated downhole-surface measurements a bell-shaped curve for resistivity change is obtained, from which the position of the chemical front may be approximately determined. Resistivity changes from temperature variations are rather small and probably cannot be detected in field measurements. Resistivity measurements are more than twice as sensitive when injected water is more saline than the in-situ reservoir fluid. This suggests that it may be easier to monitor the location of injected water if geothermal brine is reinjected rather than fresher water