On selection procedures based on ranks - Counterexamples concerning least favorable configurations

Multiple decision procedures based on ranking methods proprosed for analyzing data in one-way layou

Money Market Developments, Mid‐Year 1952 To Mid‐Year 1953

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/91234/1/j.1540-6261.1955.tb01275.x.pd

Unveiling Palomar 2: The Most Obscure Globular Cluster in the Outer Halo

We present the first color-magnitude study for Palomar 2, a distant and heavily obscured globular cluster near the Galactic anticenter. Our (V,V-I) color-magnitude diagram (CMD), obtained with the UH8K camera at the CFHT, reaches V(lim) = 24 and clearly shows the principal sequences of the cluster, though with substantial overall foreground absorption and differential reddening. The CMD morphology shows a well populated red horizontal branch with a sparser extension to the blue, similar to clusters such as NGC 1261, 1851, or 6229 with metallicities near [Fe/H] = -1.3$. From an average of several indicators, we estimate the foreground reddening at E(B-V) = 1.24 +- 0.07 and obtain a true distance modulus (m-M)_0 = 17.1 +- 0.3$, placing it about 34 kpc from the Galactic center. We use starcounts of the bright stars to measure the core radius, half-mass radius, and central concentration of the cluster. Its integrated luminosity is M_V = -7.9, making it clearly brighter and more massive than most other clusters in the outer halo.Comment: 25 pages, aastex, with 8 postscript figures; accepted for publication in AJ, September 1997. Also available by e-mail from [email protected]. Please consult Harris directly for (big) postscript files of Figures 1a,b (the images of the cluster

High Pressure Combustion and Supersonic Jet Ignition for H2/air

There are many incentives to increase the fuel efficiency of combustion processes. This paper looks at two available options to achieve this goal. The former aims to develop an experimental method that can analyze combustion at extremely high pressures to improve the understanding of high pressure H2/air combustion. Experimental data has been lacking a suitable combustion diagnostic to visualize high pressure combustion processes, making it difficult to improve the process. Improvement of x-ray diffraction tomography in a windowless combustor makes it possible to see flame propagation at high pressure. The procedure and chamber are still in the design phase, yet the preliminary research of beryllium windows and x-ray absorbance spectra indicate the feasibility and efficacy of this method. A technique of increasing the fuel efficiency in spark ignited engines is to use a supersonic jet from the spark chamber as the catalyst for combustion to trigger multiple ignition points in the main chamber for H2/air. This method requires a dual combustion chamber configuration with the pre-chamber containing the spark and various nozzle configurations to alter the structure of a supersonic jet. The pre-chamber is kept at a higher equivalence ratio, or more fuel, while the main chamber is filled with ultra-lean (phi 0.2 to 0.5) fuel/air. Ignition location, jet characteristics, ignition delay time and instability modes are studied. The usage of a supersonic jet for ignition in a spark engine was found to have a large effect on the combustion properties and induced a lowering of the lean limit

A New Method to Grow SiC: Solvent-Laser Heated Floating Zone

The solvent-laser heated floating zone (solvent-LHFZ) growth method is being developed to grow long single crystal SiC fibers. The technique combines the single crystal fiber growth ability of laser heated floating zone with solvent based growth techniques (e.g. traveling solvent method) ability to grow SiC from the liquid phase. Initial investigations reported in this paper show that the solvent-LHFZ method readily grows single crystal SiC (retains polytype and orientation), but has a significant amount of inhomogeneous strain and solvent rich inclusions

On the Availability of European Mean Sea Level Data

Over the past two years a major effort has been made to bring up-to-date the European Mean Sea Level (MSL) data set with the result that significant updates have been obtained from all European coastlines, except one, which are known to operate tide gauges. Several important historical time series, not hitherto included in the Permanent Service for Mean Sea Level (PSMSL) data bank, have also been acquired. The resulting total European MSL data set, which is available for analysis by any interested research worker, will be employed subsequently in extensive climatological and geological investigations of European MSL interannual variability and long-term trends. This report presents a review of the quantity and quality of available European MSL data with particular emphasis on the recently-obtained information

Desktop analysis to inform the design for megafauna monitoring within the Reef 2050 Integrated Monitoring and Reporting Program: final report of the seabirds team in the megafauna expert group

[Extract] The current seabird monitoring strategy for the Great Barrier Reef Marine Park is the Coastal Bird Monitoring and Information Strategy - Seabirds 2015-2050 (CBMIS-2015). This strategy is built around monitoring breeding populations of indicator species that represent different feeding guilds at identified essential breeding sites. Patterns of visitation aim to maximise the likelihood of surveys coinciding with the breeding of 20 species while minimising operational effort. Of necessity, the overall strategy is a compromise between the number of sites, visitation rates and logistic constraints. The Reef 2050 Integrated Monitoring and Reporting Program (RIMReP) review process undertaken here assesses whether the CBMIS-2015 strategy, designed within these constraints, is adequate to meet the needs of the Reef 2050 Long-Term Sustainability Plan (Reef 2050 Plan)

Article submitted to journal

rspa.royalsocietypublishing.or

Why we must tie satellite positioning to tide gauge data

Accurate measurements of changes in sea and land levels with location and time require making precise, repeated geodetic ties between tide gauges and satellite positioning system equipment

On the Asymptotic Theory of Tests of Independence Based on Bivariate Layer Ranks

1 online resource (PDF, 89 pages