Workers at Risk: Regulatory Dysfunction at OSHA

This white paper explores the causes of the Occupational Safety and Health Administration (OSHA)’s regulatory dysfunctions and describes their negative impacts on OSHA and America’s Workers. With the decreasing power of unions to organize and press employers to implement strong health and safety programs, employees in every occupation rely on OSHA to protect them from occupational hazards. Yet, in the last decade, OSHA has dropped more standards from its regulatory agenda than it has finalized, largely due to insufficient budge authority. And the agency’s enforcement program has assessed such paltry fines for even fatality-related violations of the law that many employers see no incentive in addressing hazards, much less developing precautionary health and safety programs. After describing OSHA’s problems in detail, this paper outlines a number of reforms that could enhance the agency’s performance. Although certain aspects of the Occupational Safety and Health Act could use improvement, the recommendations in this paper focus on regulatory reform—administrative actions that OSHA could implement in the short term.The Kay Bailey Hutchison Center for Energy, Law, and Busines

A non-adiabatic approach to entanglement distribution over long distances

Entanglement distribution between trapped-atom quantum memories, viz. single atoms in optical cavities, is addressed. In most scenarios, the rate of entanglement distribution depends on the efficiency with which the state of traveling single photons can be transferred to trapped atoms. This loading efficiency is analytically studied for two-level, $V$-level, $\Lambda$-level, and double-$\Lambda$-level atomic configurations by means of a system-reservoir approach. An off-resonant non-adiabatic approach to loading $\Lambda$-level trapped-atom memories is proposed, and the ensuing trade-offs between the atom-light coupling rate and input photon bandwidth for achieving a high loading probability are identified. The non-adiabatic approach allows a broad class of optical sources to be used, and in some cases it provides a higher system throughput than what can be achieved by adiabatic loading mechanisms. The analysis is extended to the case of two double-$\Lambda$ trapped-atom memories illuminated by a polarization-entangled biphoton.Comment: 15 pages, 15 figure

Anomalous Phase Transition in Strained SrTiO3_3 Thin Films

We have studied the cubic to tetragonal phase transition in epitaxial SrTiO$_3$ films under various biaxial strain conditions using synchrotron X-ray diffraction. Measuring the superlattice peak associated with TiO$_6$ octahedra rotation in the low temperature tetragonal phase indicates the presence of a phase transition whose critical temperature is a strong function of strain, with T$_C$ as much as 50K above the corresponding bulk temperature. Surprisingly, the lattice constants evolve smoothly through the transition with no indication of a phase change. This signals an important change in the nature of the phase transition due to the epitaxy strain and substrate clamping effect. The internal degrees of freedom (TiO$_6$ rotations) have become uncoupled from the overall lattice shape.Comment: 4 pages, 3 figures, REVTeX

Reorienting OSHA: Regulatory Alternatives and Legislative Reform

The consumer and environmental movement that ushered in the 1970s brought with it several unique experiments in governmental control over business behavior. President Nixon reorganized the federal government to create the Environmental Protection Agency (EPA) just as Congress was enacting comprehensive amendments to the Clean Air Act, the Clean Water Act, and the Federal Insecticide, Fungicide and Rodenticide Act. Congress created the Consumer Product Safety Commission (CPSC) to administer new and existing statutes designed to protect children and the general public from hazardous products. A revitalized Federal Trade Commission began to use its latent rulemaking powers, and Congress soon gave it new powers to write rules to harness industry. Even the Food and Drug Administration (FDA) began to experiment with procedural innovations designed to enhance its regulatory efficiency

Coarse Graining RNA Nanostructures for Molecular Dynamics Simulations

A series of coarse-grained models have been developed for the study of the molecular dynamics of RNA nanostructures. The models in the series have one to three beads per nucleotide and include different amounts of detailed structural information. Such a treatment allows us to reach, for the systems of thousands of nucleotides, a time scale of microseconds (i.e. by three orders of magnitude longer than in the full atomistic modelling) and thus to enable simulations of large RNA polymers in the context of bionanotechnology. We find that the 3-beads-per-nucleotide models, described by a set of just a few universal parameters, are able to describe different RNA conformations and are comparable in structural precision to the models where detailed values of the backbone P-C4' dihedrals taken from a reference structure are included. These findings are discussed in the context of the RNA conformation classes