Design concept (milestone 2) for space vehicle entry and landing navigation programs

Detailed specifications and functional flow diagrams for space vehicle entry and landing navigation programs are reported. General design criteria, overall functions, and interfaces between the following three programs are considered: external observations program, noisy observations program, and navigation analysis program

Kinetics of Surfactant Adsorption at Fluid/Fluid Interfaces: Non-ionic Surfactants

We present a model treating the kinetics of adsorption of soluble surface-active molecules at the interface between an aqueous solution and another fluid phase. The model accounts for both the diffusive transport inside the solution and the kinetics taking place at the interface using a free-energy formulation. In addition, it offers a general method of calculating dynamic surface tensions. Non-ionic surfactants are shown, in general, to undergo a diffusion-limited adsorption, in accord with experimental findings.Comment: 6 pages, 3 figures, see also cond-mat/960814

Reply to Comment on: "Are stress-free membranes really 'tensionless'?"

This is a reply to a comment on the paper arXiv:1204.2075 "Are stress-free membranes really tensionless ?" (EPL 95,28008 (2011))

Correlated particle dynamics in concentrated quasi-two-dimensional suspensions

We investigate theoretically and experimentally how the hydrodynamically correlated lateral motion of particles in a suspension confined between two surfaces is affected by the suspension concentration. Despite the long range of the correlations (decaying as 1/r^2 with the inter-particle distance r), the concentration effect is present only at short inter-particle distances for which the static pair correlation is nonuniform. This is in sharp contrast with the effect of hydrodynamic screening present in unconfined suspensions, where increasing the concentration changes the prefactor of the large-distance correlation.Comment: 13 page

Swelling of particle-encapsulating random manifolds

We study the statistical mechanics of a closed random manifold of fixed area and fluctuating volume, encapsulating a fixed number of noninteracting particles. Scaling analysis yields a unified description of such swollen manifolds, according to which the mean volume gradually increases with particle number, following a single scaling law. This is markedly different from the swelling under fixed pressure difference, where certain models exhibit criticality. We thereby indicate when the swelling due to encapsulated particles is thermodynamically inequivalent to that caused by fixed pressure. The general predictions are supported by Monte Carlo simulations of two particle-encapsulating model systems -- a two-dimensional self-avoiding ring and a three-dimensional self-avoiding fluid vesicle. In the former the particle-induced swelling is thermodynamically equivalent to the pressure-induced one whereas in the latter it is not.Comment: 8 pages, 6 figure

Evolution of a bosonic mode across the superconducting dome in the high-Tc cuprate Pr(2-x)Ce(x)CuO(4-{\delta})

We report a detailed spectroscopic study of the electron doped cuprate superconductor Pr(2-x)Ce(x)CuO(4-{\delta}) using point contact junctions for x=0.125(underdoped), x=0.15(optimally doped) and x=0.17(overdoped). From our conductance measurements we are able to identify bosonic resonances for each doping. These excitations disappear above the critical temperature, and above the critical magnetic field. We find that the energy of the bosonic excitations decreases with doping, which excludes lattice vibrations as the paring glue. We conclude that the bosonic mediator for these cuprates is more likely to be spin excitations.Comment: 4 page

Implementation of Physician Orders for Life Sustaining Treatment in nursing homes in California: evaluation of a novel statewide dissemination mechanism.

BackgroundImplementing Physician Orders for Life Sustaining Treatment (POLST) forms aims to improve communication of life-sustaining treatment preferences across care venues. California enabled this clinical tool in 2009, and a novel intervention of community coalitions was undertaken to advance POLST in localities around the state. Coalitions engaged facilities, including nursing homes (NHs), to foster POLST adoption. Eighteen months after introduction of POLST, we studied POLST implementation in California NHs.MethodsNHs randomly selected in coalition and non-coalition areas were mailed surveys about POLST preparation and use in 2010. Coalitions identified which NHs they worked with.ResultsOf 546 NHs surveyed, 143 (52 %) in coalition areas and 141 (52 %) in non-coalition areas responded. In 82 % of responding NHs, staff received POLST education and 59 % of NHs reported having a formal policy on handling POLST. Two-thirds of NHs had admitted a resident with a POLST, and 15 % of newly admitted residents over the past month had a POLST (range 0-100 %). Eighty-one percent of NHs had completed a POLST with a resident. Fifty-four percent of residents were estimated to have a POLST (range 0-100 %) (coalition area NHs 60 % vs. non- coalition area NHs 48 %, p = 0.02). Within coalition areas, NHs that had worked with coalitions were more likely to have completed a POLST with a resident after admission than NHs that had not worked with coalitions. Few NHs (7 %) reported difficulty following POLST orders, but 38 % noted difficulty involving physicians in POLST completion.ConclusionLess than 2 years after introduction, many California nursing homes report using POLST, although some NHs reported no experience. A novel community coalition intervention facilitated POLST implementation

Somebody\u27s Watching Me: FCPA Monitorships and How They Can Work Better

This article explores the rise of the corporate compliance monitor as a condition for settling violations of the U.S. Foreign Corrupt Practices Act (“FCPA”) — a setting in which federal prosecutors routinely impose monitors. If U.S. enforcement authorities maintain their current approach, the reality is that companies facing liability for violating the FCPA are likely to have a monitor imposed on them as part of a settlement agreement. From the U.S. government’s perspective, monitorships make sense for companies that violate anti-bribery laws, making it important for offending corporations to learn how to deal with monitors. Pulling from the authors’ extensive experience with three major FCPA compliance monitorships, as well as their work assisting clients operating under an FCPA monitorship, this article aids in that process. It also hopes to help monitors themselves, as well as the prosecutors who appoint them, in making the monitorship a more constructive feature of an FCPA settlement

Somebody\u27s Watching Me: FCPA Monitorships and How They Can Work Better

This article explores the rise of the corporate compliance monitor as a condition for settling violations of the U.S. Foreign Corrupt Practices Act (“FCPA”) — a setting in which federal prosecutors routinely impose monitors. If U.S. enforcement authorities maintain their current approach, the reality is that companies facing liability for violating the FCPA are likely to have a monitor imposed on them as part of a settlement agreement. From the U.S. government’s perspective, monitorships make sense for companies that violate anti-bribery laws, making it important for offending corporations to learn how to deal with monitors. Pulling from the authors’ extensive experience with three major FCPA compliance monitorships, as well as their work assisting clients operating under an FCPA monitorship, this article aids in that process. It also hopes to help monitors themselves, as well as the prosecutors who appoint them, in making the monitorship a more constructive feature of an FCPA settlement