Black and Blue: Exploring Racial Bias and Law Enforcement in the Killings of Unarmed Black Male Civilians

In late 2014, a series of highly publicized police killings of unarmed Black male civilians in the United States prompted large-scale social turmoil. In the current review, we dissect the psychological antecedents of the se killings and explain how the nature of police work may attract officers with distinct characteristics that may make them especially well-primed for negative interactions with Black male civilians. We use media reports to contextualize the precipitating events of the social unrest as we ground our explanations in theory and empirical research from social psychology and industrial and organizational (I/O) psychology. To isolate some of the key mechanisms at play, we disentangle racial bias (e.g., stereotyping processes) from common characteristics of law enforcement agents (e.g., social dominance orientation), while also addressing the interaction between racial bias and policing. By separating the moving parts of the phenomenon, we provide a more fine-grained analysis of the factors that may have contributed to the killings. In doing so, we endeavor to more effectively identify and develop solutions to eradicate excessive use of force during interactions between "Black" (unarmed Black male civilians) and "Blue" (law enforcement)

Condensate splitting in an asymmetric double well for atom chip based sensors

We report on the adiabatic splitting of a BEC of $^{87}$Rb atoms by an asymmetric double-well potential located above the edge of a perpendicularly magnetized TbGdFeCo film atom chip. By controlling the barrier height and double-well asymmetry the sensitivity of the axial splitting process is investigated through observation of the fractional atom distribution between the left and right wells. This process constitutes a novel sensor for which we infer a single shot sensitivity to gravity fields of $\delta g/g\approx2\times10^{-4}$. From a simple analytic model we propose improvements to chip-based gravity detectors using this demonstrated methodology.Comment: 4 pages, 5 figure

Coherent states and the quantization of 1+1-dimensional Yang-Mills theory

This paper discusses the canonical quantization of 1+1-dimensional Yang-Mills theory on a spacetime cylinder, from the point of view of coherent states, or equivalently, the Segal-Bargmann transform. Before gauge symmetry is imposed, the coherent states are simply ordinary coherent states labeled by points in an infinite-dimensional linear phase space. Gauge symmetry is imposed by projecting the original coherent states onto the gauge-invariant subspace, using a suitable regularization procedure. We obtain in this way a new family of "reduced" coherent states labeled by points in the reduced phase space, which in this case is simply the cotangent bundle of the structure group K. The main result explained here, obtained originally in a joint work of the author with B. Driver, is this: The reduced coherent states are precisely those associated to the generalized Segal-Bargmann transform for K, as introduced by the author from a different point of view. This result agrees with that of K. Wren, who uses a different method of implementing the gauge symmetry. The coherent states also provide a rigorous way of making sense out of the quantum Hamiltonian for the unreduced system. Various related issues are discussed, including the complex structure on the reduced phase space and the question of whether quantization commutes with reduction

A review of LANDSAT-D and other advanced systems relative to improving the utility of space data in water-resources management

Ther are no author-identified significiant results in this report

Status of ultrachemical analysis for semiconductors

Status of ultratrace chemical analyses of materials for semiconductors was studied. This study covered atomic absorption spectroscopy, emission spectroscopy, and activation analyses. It makes recommendations to improve sensitivity, reliability and versatility for ultratrace chemical analysis

Profile of pulmonary smooth muscle cells and their response to blockade and Stimulations

INTRODUCTION: The tone of the pulmonary arteries is the summation of the activity of each smooth muscle cell (SMC) within a vessel wall and its interaction with the endothelial cells and extracellular matrix (including collagen). There are reported phenotypic differences between SMC in the inner & outer layers of pulmonary artery walls1. To tissue engineer a blood vessel a basic understanding of differences between inner and outer SMC’s in terms of attachment and contraction of 3D matrix is essential. We hypothesised that they will differ in their ability to contract a 3D collagen gel. Using a Culture Force Monitor (CFM) we sought to: (1) quantify the contractile ability of SMC derived from inner and outer normal and hypoxic arteries, harvested from piglet models, over 24 hours, (2) test the effect of cytoskeletal blockade on force retention in collagen gels and (3) quantify cellular contractile response to agonist or antagonist stimulation

On the nonlinear interfacial instability of rotating core-annular flow

The interfacial stability of rotating core-annular flows is investigated. The linear and nonlinear effects are considered for the case when the annular region is very thin. Both asymptotic and numerical methods are used to solve the flow in the core and film regions which are coupled by a difference in viscosity and density. The long-term behavior of the fluid-fluid interface is determined by deriving its nonlinear evolution in the form of a modified Kuramoto-Sivashinsky equation. We obtain a generalization of this equation to three dimensions. The flows considered are applicable to a wide array of physical problems where liquid films are used to lubricate higher or lower viscosity core fluids, for which a concentric arrangement is desired. Linearized solutions show that the effects of density and viscosity stratification are crucial to the stability of the interface. Rotation generally destabilizes non-axisymmetric disturbances to the interface, whereas the centripetal forces tend to stabilize flows in which the film contains the heavier fluid. Nonlinear affects allow finite amplitude helically travelling waves to exist when the fluids have different viscosities

Trawling damage to Northeast Atlantic ancient coral reefs

10.1098/rspb.2001.191

Asymptotic iteration method for eigenvalue problems

An asymptotic interation method for solving second-order homogeneous linear differential equations of the form y'' = lambda(x) y' + s(x) y is introduced, where lambda(x) \neq 0 and s(x) are C-infinity functions. Applications to Schroedinger type problems, including some with highly singular potentials, are presented.Comment: 14 page

New insights into the internationalization of producer services:Organizational strategies and spatial economies for global headhunting firms

This paper uses the exemplar of global headhunting firms to provide new insights into the intricacies of internationalization and related ‘spatial economies’ of producer services in the world economy. In particular, we unpack the complex relationships between the organisational rationale for, the selected mode of, and future benefits gained by internationalization, as headhunting firms seek and create new geographical markets. We achieve this through an analysis of headhunting firm-specific case study data that details the evolving way such firms organize their differential strategic growth (organic, merger and acquisition, and alliances/network) and forms (wholly-owned, networked or hybrid). We also highlight how, as elite labour market intermediaries, headhunters are important, yet understudied, actors within the (re)production of a ‘softer’, ‘knowledgeable’ capitalism. Our argument, exemplified through detailed mapping of the changing geographies of headhunting firms between 1992 and 2005, demonstrates the need for complex and blurred typologies of internationalization and similarly complex internationalization theory