6,526 research outputs found
Introduction to the themed issue - Corporate power : agency, communication, influence and social policy
This paper introduces this themed issue of Critical Social Policy on the question of corporate power. Corporate power is recognized as an important agent in social policy making and delivery. However, to date there has been comparatively little attention to the crucial role that lobbying and corporate 'spin' play in helping to shape policy making contexts. This special issue of Critical Social Policy is concerned to bring such issues to the mainstream of social policy analysis. It is argued here that the rise of spin and public relations is a key feature of neoliberalism in the past two decades. These have worked to reshape policy making, resulting in pronounced changes in the content and process of policy making and it is argued that these have tended to marginalize or undermine democratic processes
Large Magnetic Fields and Motions of OH Masers in W75 N
We report on a second epoch of VLBA observations of the 1665 and 1667 MHz OH
masers in the massive star-forming region W75 N. We find evidence to confirm
the existence of very strong (~40 mG) magnetic fields near source VLA 2. The
masers near VLA 2 are dynamically distinct and include a very bright spot
apparently moving at 50 km/s relative to those around VLA 1. This fast-moving
spot may be an example of a rare class of OH masers seen in outflows in
star-forming regions. Due to the variability of these masers and the rapidity
of their motions, tracking these motions will require multiple observations
over a significantly shorter time baseline than obtained here. Proper motions
of the masers near VLA 1 are more suggestive of streaming along magnetized
shocks rather than Keplerian rotation in a disk. The motions of the easternmost
cluster of masers in W75 N (B) may be tracing slow expansion around an unseen
exciting source.Comment: 7 pages including 4 figures (2 color) & 3 tables, to appear in Ap
Graviton Absorption by Non-BPS Branes
We consider the behaviour of neutral non-BPS branes probed by scalars and
gravitons. We show that the naked singularity of the non-BPS branes is a {\it
repulson} absorbing no incoming radiation. The naked singularity is surrounded
by an infinite potential well breaking the unitarity of the scattering
S-matrix. We compute the absorption cross section which is infrared divergent.
In particular this confirms that gravity does not decouple for the non-BPS
branes.Comment: 13 pages, Late
Generation of the Baryon Asymmetry of the Universe within the Left--Right Symmetric Model
Fermions scattering off first-order phase transition bubbles, in the
framework of models, may generate the
Baryon Asymmetry of the Universe (BAU), either at the -symmetry-breaking
scale, or at the weak scale. In the latter case, the baryon asymmetry of the
Universe is related to CP violation in the -- system.Comment: 17 pages, CERN--TH 6747/92, ULB--TH--07/92, UAB-FT-298/9
The Electroweak Phase Transition in a Nonminimal Supersymmetric Model
We study the electroweak phase transition in a supersymmetric version of the
Standard Model, in which a gauge singlet superfield is added to the Higgs
sector. We show that the order of the transition is determined by the trilinear
soft supersymmetry breaking terms rather than by the term in
the 1-loop, corrections. This fact removes the Standard Model upper
bound on the Higgs mass, , coming from the requirement that
baryon asymmetry is not washed out by anomalous electroweak processes. We
perform a numerical analysis of parameter space including in the effective
potential top-stop contribution to 1-loop radiative corrections. We find that
this model is compatible with the preservation of baryon asymmetry for masses
of the lightest scalar up to about 170 GeV.Comment: 23 pages, LaTeX, DFPD/92/TH/3
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