Cancer-related electronic support groups as navigation-aids: Overcoming geographic barriers

Cancer-related electronic support groups (ESGs) may be regarded as a complement to face-to-face groups when the latter are available, and as an alternative when they are not. Advantages over face-to-face groups include an absence of barriers imposed by geographic location, opportunities for anonymity that permit sensitive issues to be discussed, and opportunities to find peers online. ESGs can be especially valuable as navigation aids for those trying to find a way through the healthcare system and as a guide to the cancer journey. Outcome indicators that could be used to evaluate the quality of ESGs as navigation aids need to be developed and tested. Conceptual models for the navigator role, such as the Facilitating Navigator Model, are appropriate for ESGs designed specifically for research purposes. A Shared or Tacit Model may be more appropriate for unmoderated ESGs. Both conceptual models raise issues in Internet research ethics that need to be addres

Dark Matter Halos from the Inside Out

The balance of evidence indicates that individual galaxies and groups or clusters of galaxies are embedded in enormous distributions of cold, weakly interacting dark matter. These dark matter 'halos' provide the scaffolding for all luminous structure in the universe, and their properties comprise an essential part of the current cosmological model. I review the internal properties of dark matter halos, focussing on the simple, universal trends predicted by numerical simulations of structure formation. Simulations indicate that halos should all have roughly the same spherically-averaged density profile and kinematic structure, and predict simple distributions of shape, formation history and substructure in density and kinematics, over an enormous range of halo mass and for all common variants of the concordance cosmology. I describe observational progress towards testing these predictions by measuring masses, shapes, profiles and substructure in real halos, using baryonic tracers or gravitational lensing. An important property of simulated halos (possibly the most important property) is their dynamical 'age', or degree of internal relaxation. The age of a halo may have almost as much effect as its mass in determining the state of its baryonic contents, so halo ages are also worth trying to measure observationally. I review recent gravitational lensing studies of galaxy clusters which should measure substructure and relaxation in a large sample of individual cluster halos, producing quantitative measures of age that are well-matched to theoretical predictions. The age distributions inferred from these studies will lead to second-generation tests of the cosmological model, as well as an improved understanding of cluster assembly and the evolution of galaxies within clusters.Comment: v2: additional references and minor corrections to match the published versio

When Lawyers Advise Presidents in Wartime: Kosovo and the Law of Armed Conflict

The events of September 11 changed how we perceive national security as a society, a government, and as individuals. This is as true of national security specialists, who have been aware that America has been at war with terrorism sine at least the 1990s, as it is for those whose sense of geographic security was shattered in New York and Washington. There is talk of “new war” and “new rules,” and concern that we not apply twentieth-century lessons to a twenty-first-century war. Over time, September 11 and its aftermath will test our interpretation and application of domestic law. It may also test the traditional framework under international law for resorting to and applying force. But much will, and should, stay the same for lawyers. As a result, the objective of this paper is to give some personal insight into the application of the law of armed conflict to the 1999 Nato Kosovo air campaign from the perspective of a lawyer serving the president as commander in chief. National-level legal review is critical to military operations, not just in determining whether the commander in chief has domestic and international legal authority to resort to force, but also in shaping the manner in which the United States employs force. Lawyers also have an important role to play in sustaining “good-government” process, offering a degree of detachment and long-term perspective

The Master Mason: How Professor Baldus Built a Bridge from Learning to Law and the Legacy of Equal Justice He Leaves Behind

These are Chief Judge Baker’s remarks eulogizing the late Professor David Baldus. Chief Judge Baker observes that Professor Baldus was an extraordinary educator-lawyer who mastered the fields of social science and statistics. He adds that Professor Baldus was diligent in his research and strived to make the law accessible. Chief Judge Baker discusses how Professor Baldus’s research on the death penalty and proportionality review successfully bridged the law and learning, without ever losing sight of compassion

The Embedding of Superstring Backgrounds in Einstein Gravity

A theorem of differential geometry is employed to locally embed a wide class of superstring backgrounds that admit a covariantly constant null Killing vector field in eleven-dimensional, Ricci-flat spaces. Included in this class are exact type IIB superstring backgrounds with non-trivial Ramond-Ramond fields and a class of supersymmetric string waves. The embedding spaces represent exact solutions to eleven-dimensional, vacuum Einstein gravity. A solution of eleven-dimensional supergravity is also embedded in a twelve--dimensional, Ricci-flat space.Comment: 14 pages, Latex sourc

Mechanical strain isolator mount

Certain devices such as optical instruments must preserve their alignmental integrity while being subjected to mechanical strain. A mechanical strain isolator mount is provided to preserve the alignmental integrity of an alignment sensitive instrument. An alignment sensitive instrument is mounted on a rectangular base. Flexural legs are connected at their proximal ends to the rectangular base. Flexural legs are also spaced parallel to the sides. Mounting pads are connected to the legs at the distal end and the mechanical strain isolator mount is attached to the substrate by means of threaded bolts. When a mounting pad and its respective leg is subjected to lateral strain in either the X or Y direction via the substrate, the respective leg relieves the strain by bending in the direction of the strain. An axial strain on a mounting pad in the Z direction is relieved by a rotational motion of the legs in the direction of the strain. When the substrate is stress free, the flexural legs return to their original condition and thus preserve the original alignment integrity of the alignment sensitive instrument