A robust method for measuring the Hubble parameter

We obtain a robust, non-parametric, estimate of the Hubble constant from galaxy linear diameters calibrated using HST Cepheid distances. Our method is independent of the parametric form of the diameter function and the spatial distribution of galaxies and is insensitive to Malmquist bias. We include information on the galaxy rotation velocities; unlike Tully-Fisher, however, we retain a fully non-parametric treatment. We find $H_0=66\pm6$ km/s/Mpc, somewhat larger than previous results using galaxy diameters.Comment: 4 pages, 1 figure, Cosmic Flows Workshop, Victoria B.C. Canada, July 1999, ed. S. Courteau, M. Strauss & J. Willick, ASP conf. serie

United Kingdom Regulation of Transnational Corporate Concentration

This article begins by describing the United Kingdom\u27s policy toward outward and inward direct investment and then sets out the essentials of the competition laws that are among the major, nondiscriminatory regulatory mechanisms that affect corporate behavior and planning. The article also analyzes the development of competition policy as a microeconomic instrument along with its application to monopoly, oligopoly, and cartels involving transnational corporations. Competition policy, except for cartels, is shown to be relatively benign toward mergers until recently, and with respect to monopoly and oligopoly has sought remedies in regulation of prices and behavior rather than through structural change. Recent proposals, including a new Competition Act, are described. The analysis will show that although transnational corporations have been prominent in competition policy enforcement, substantial detriments arising from their transnational nature have not yet been identified, despite the presence of adverse effects on the public interest. Traditional fears associated with foreign investment in the United Kingdom do not, therefore, seem to be justified, insofar as the abuse of market power is concerned. In practice, the United Kingdom has relied principally on an effective tax system and competitive markets to ensure an equitable distribution of the gains from foreign direct investment, and there has been relatively little interference with inward flows of capital

Empirical constraints on vacuum decay in the stringy landscape

It is generally considered as self evident that the lifetime of our vacuum in the landscape of string theory cannot be much shorter than the current age of the universe. Here I show why this lower limit is invalid. A certain type of ``parallel universes'' is a necessary consequence of the string-landscape dynamics and might well allow us to ``survive'' vacuum decay. As a consequence our stringy vacuum's lifetime is empirically unconstrained and could be very short. Based on this counter-intuitive insight I propose a novel type of laboratory experiment that searches for an apparent violation of the quantum-mechanical Born rule by gravitational effects on vacuum decay. If the lifetime of our vacuum should turn out to be shorter than 6 x 10^{-13} seconds such an experiment is sufficiently sensitive to determine its value with state-of-the-art equipment.Comment: 13 pages, 2 figures, proposes a laboratory experimen

POWERLIB: SAS/IML Software for Computing Power in Multivariate Linear Models

The POWERLIB SAS/IML software provides convenient power calculations for a wide range of multivariate linear models with Gaussian errors. The software includes the Box, Geisser-Greenhouse, Huynh-Feldt, and uncorrected tests in the "univariate" approach to repeated measures (UNIREP), the Hotelling Lawley Trace, Pillai-Bartlett Trace, and Wilks Lambda tests in "multivariate" approach (MULTIREP), as well as a limited but useful range of mixed models. The familiar univariate linear model with Gaussian errors is an important special case. For estimated covariance, the software provides confidence limits for the resulting estimated power. All power and confidence limits values can be output to a SAS dataset, which can be used to easily produce plots and tables for manuscripts.