5,536 research outputs found
The Right’s Reasons: Constitutional Conflict and the Spread of Woman-Protective Anti-Abortion Argument
The Lecture offers a provisional first account of the rise and spread of WPAA. It traces the development of gender-based antiabortion advocacy, examining the rise of post-abortion syndrome (PAS) claims in the Reagan years and the first struggles in the antiabortion movement about whether the right to life is properly justified on the ground of women’s welfare. My story then follows changes in the abortion-harms-women claim, as it is transformed from PAS—a therapeutic and mobilizing discourse initially employed to dissuade women from having abortions and to recruit women to the antiabortion cause—into WPAA, a political discourse forged in the heat of movement conflict that seeks to persuade audiences outside the movement’s ranks in political campaigns and constitutional law. I tell a story in which social movement mobilization, coalition, and conflict each play a role in the evolution and spread of this constitutional argument, in the process forging new and distinctly modern ways to talk about the right to life and the role morality of motherhood in the therapeutic, public health, and political rights idiom of late twentieth-century America
Energy dissipation of rigid dipoles in a viscous fluid under the action of a time-periodic field: the influence of thermal bath and dipole interaction
Ferrofluid heating by an external alternating field is studied based on the
rigid dipole model, where the magnetization of each particle in a fluid is
supposed to be firmly fixed in the crystal lattice. Equations of motion,
employing the Newton's second law for rotational motion, the condition of rigid
body rotation, and the assumption that the friction torque is proportional to
angular velocity, are used. This oversimplification permits us to expand the
model easily: to take into account the thermal noise and inter-particle
interaction that allows to estimate from unified positions the role of thermal
activation and dipole interaction in the heating process. Our studies are
conducted in three stages. The exact expressions for the average power loss of
a single particle are obtained within the dynamical approximation. Then, in the
stochastic case, the power loss of a single particle is estimated analytically
using the Fokker-Planck equation and numerically using the effective Langevin
equation. Finally, the power loss for the particle ensemble is obtained using
the molecular dynamics method. Here, the local dipole fields are calculated
approximately based on the Barnes-Hut algorithm. The revealed trends in the
behaviour of both a single particle and the particle ensemble suggest the way
of choosing the conditions for obtaining the maximum heating efficiency. The
competitiveness character of the inter-particle interaction and thermal noise
is investigated in details. Two situations, when the thermal noise rectifies
the power loss reduction caused by the interaction, are described. The first of
them is related to the complete destruction of dense clusters at high noise
intensity. The second one is originated from the rare switching of the
particles in clusters due to thermal activation, when the noise intensity is
relatively weak.Comment: 17 pages 11 figure
Collimated Escaping Vortical Polar e-e+ Jets Intrinsically Produced by Rotating Black Holes and Penrose Processes
In this paper, I present results from theoretical and numerical (Monte Carlo)
N-particle fully relativistic 4-D analysis of Penrose scattering processes
(Compton and gamma-gamma-->e-e+) in the ergosphere of a supermassive or stellar
mass Kerr (rotating) black hole. Specifically, the escape conditions and the
escaping orbits of the Penrose pair production (gamma-gamma-->e-e+) electrons
are analyzed, revealing that these particles escape along collimated, jet
geodesic trajectories encircling the polar axis. Such collimated vortical
tightly wound coil-like trajectories of relativistic particles are inherent
properties of rotating black holes. The helical polar angles of escape for
these e-e+ pairs range from 40 degrees to 0.5 degree (for the highest energy
particles). These jet distributions appear to be consistent with the
astrophysical jets of active galactic nuclei (AGNs) and galactic black holes
and suggest a mechanism for precollimation within the inner radius of the
dynamically stable accretion disk.Comment: 23 pages, 6 eps figures, AASTeX, accepted for publication in ApJ;
refereed versio
Ecologo-geographical atlas as a model of stable economic development of region: Choice and treatment of information principles
At the Tatarstan Republic (Russia) there used the programms of socio-economical, ecologo-economical, informational etc. development and recreation at the level of global, federal and regional scales which should begin to work, in order to elaborate general ecologo-economical policy by means of conception of balanced state and stable development of a region. As a model expression of the conception becomes "Ecologo- Geographical Atlas of the Tatarstan Republic" providing integral, complete and balanced views of the environmental condition. The work is conducted with "floating" set of geographical information (indicators) which allows to stress a specificity of objects. The procedure permits to elaborate system of diagnostic indicators. Its goal - to obtain such interconnected set of indicators for each unit (operational-territorial unit, or OTU) that is will show the greatest distinction with other OTU of the totality. System of indications is chosen so that it reflects all aspects of complex socio-ecologo-economical state and situations of the region and with the help of our special method it is transformated into the corresponding regional syndrom for every region. On the whole, the Atlas gives a perspective sight of reflection of the present day ecologo-economical condition and orients specialists and authorities to take timly and effective management decisions in the field of regional policy.
- …
