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

Ordered Liberty and the Homeland Security Mission

This paper will start with a brief discussion of the terrorism threat because the threat remains predicate for any serious discussion of where we draw our legal lines. I will then suggest a legal model for looking at questions of homeland security called ordered liberty. The model is simple. First, given the nature of the threat, the executive must have broad and flexible authority to detect and respond to terrorism-–to provide for our physical security. Second, the sine qua non for such authority is meaningful oversight. Oversight means the considered application of constitutional structure, executive process, legal substance, and relevant review to decision-making–-all of which depend on the integrity and judgment of government lawyers. Meaningful oversight protects our way of life. It also protects our security by helping decision-makers get it right on the front end of a decision, rather than investigating on the back end. This model does not detail whether civil service rules should apply to the Homeland Security Department, or whether military commissions are a good idea. The paper will suggest some principles and lessons learned that can be applied to such questions. In the process, two false dichotomies will hopefully be debunked: first, that security and liberty conflict; and, second that oversight and security conflict

Evidence For and Against Collimation of Gamma Ray Bursts

The degree to which gamma ray bursts are collimated is now the dominant uncertainty in their energy requirements and event rates. In this review I begin with the reasons for studying GRB collimation, then discuss existing tests for collimation and their applications to date, and finally outline some possible future tests. The most important conclusions are that (1) mean collimation angles much tighter than 1 degree appear ruled out; (2) the collimation angle appears to vary from burst to burst (like most other GRB properties). Some alternative explanations of apparent collimation signatures remain, but it should be possible to distinguish them from true collimation with future data sets and may be possible already. New satellites, improved followup observations, and new tests for collimation all promise continued rapid progress in coming years.Comment: Invited review at Ninth Marcel Grossmann Meeting. 8 pages, uses World Scientific macros (included

The Solution of Elliptic Difference Equations by Semi-Explicit Iterative Techniques

In [8], the author discusses an iterative scheme for solving a difference analogue for the elliptic differential equation ∇•α∇u = f on two-dimensional rectangular regions with Dirichlet boundary conditions. It is shown there that a semi-explicit technique involving the inversion only of the Peaceman-Rachford [10] alternating-direction operators for the Laplacian gives convergence in O(h^(-2) log h^(-1)) operations

Hodge gauge fixing in three dimensions

A progress report on experiences with a gauge fixing method proposed in LATTICE 94 is presented. In this algorithm, an SU(N) operator is diagonalized at each site, followed by gauge fixing the diagonal (Cartan) part of the links to Coulomb gauge using the residual abelian freedom. The Cartan sector of the link field is separated into the physical gauge field $\alpha^{(f)}_\mu$ responsible for producing $f^{\rm Cartan}_{\mu\nu}$, the pure gauge part, lattice artifacts, and zero modes. The gauge transformation to the physical gauge field $\alpha^{(f)}_\mu$ is then constructed and performed. Compactness of the lattice fields entails issues related to monopoles and zero modes which are addressed.Comment: 4 pages Latex, 3 postscript figures, Poster presented at LATTICE96(topology