Digging Deeper: James Connolly in America

This project continued research into James Connolly\u27s time in America from 1902-1910. It focused on primary sources in the hopes to unearth things not found in the secondary writing on Connolly’s activities during this influential time. The O’Brien papers are an eclectic collection of primary documents from Connolly’s life, including letters between James Connolly and his friend John Matheson, correspondence with other socialists, and some of Connolly’s own writing. The New York Call was a daily socialist newspaper that contains ads for Connolly’s lectures and his magazine, The Harp, as well as meetings of his organization, the Irish Socialist Federation. Through these primary sources and others, more of James Connolly’s activities and perspectives during his time in America come to light

Synthetic aperture radar signal processing on the MPP

Satellite-borne Synthetic Aperture Radars (SAR) sense areas of several thousand square kilometers in seconds and transmit phase history signal data several tens of megabits per second. The Shuttle Imaging Radar-B (SIR-B) has a variable swath of 20 to 50 km and acquired data over 100 kms along track in about 13 seconds. With the simplification of separability of the reference function, the processing still requires considerable resources; high speed I/O, large memory and fast computation. Processing systems with regular hardware take hours to process one Seasat image and about one hour for a SIR-B image. Bringing this processing time closer to acquisition times requires an end-to-end system solution. For the purpose of demonstration, software was implemented on the present Massively Parallel Processor (MPP) configuration for processing Seasat and SIR-B data. The software takes advantage of the high processing speed offered by the MPP, the large Staging Buffer, and the high speed I/O between the MPP array unit and the Staging Buffer. It was found that with unoptimized Parallel Pascal code, the processing time on the MPP for a 4096 x 4096 sample subset of signal data ranges between 18 and 30.2 seconds depending on options

Investigation of Surfaces and Interfaces by Electron Optical Methods

The combination of methods for surface analysis with electron microscopes (EM) gives the possibility for surface and interface microanalysis. The paper deals with different methods a) for imaging of surfaces with high lateral resolution: Emission EM (EEM), Scanning EM (SEM), Reflection EM (REM) Transmission EM (TEM) using special preparation methods as replica techniques or cross section specimens b) for crystal structure investigation: Low and High Energy Electron Diffraction and Electron Chanelling Patterns and c) for material analysis using electron spectroscopy either of the emitted or scattered electrons. The combination of all analytical methods in one instrument for surface microanalysis (SMA) however is difficult. The possibilities and limitations of different SMA instruments are discussed

The Solubility of Anhydrous Magnesium Perchlorate in Diethyl Ether

In the study of the physical properties of non-aqueous solvates considerable work has been done on the systems magnesium bromide-diethyl ether (1-3) and zinc bromide-diethyl ether (4). It is planned to extend these studies to the bromides of other elements in the same periodic group as well as to related compounds. One of the authors (R) during a study of the three component system, water-diethyl ether-magnesium bromide, tried to determine the amount of water in a sample of ether solution by use of the drying agent Dehydrite, which is anhydrous magnesium perchlorate. It was noted that the magnesium perchlorate appeared to retain considerable ether even when heated. Since other magnesium compounds form etherates, especially the halides, it was decided to investigate this phenomenon further by means of solubility measurements of anhydrous magnesium perchlorate in diethyl ether. Willard and Smith (5) had previously determined the solubility of this compound in numerous solvents including diethyl ether at 25°. The present work was done at 0°, 15° and 25°

Systems Thinking Evidence From Colleges Of Business And Their Universities

This study investigated instances of the term systems thinking among the websites of the Top 25 business schools as ranked by U. S. News and World Report in 2010. Since a greater number of instances of the term and its variants in a universitys web documents may indicate an increased interest of the institution in the concept of systems thinking, the universities in this study were rated according to their decreasing instances, counts, or website hits. Results indicated that while many schools had little to no mention of the term in any form, some schools used it prolifically on their websites, even when searching and hit counting was adjusted to remove duplicates and isolate inaccurate results. Nevertheless, appearance and discussion of the term was limited in official university information displayed by most schools. The authors assert that an increasing importance should be placed on teaching systems thinking at the graduate level and on providing evidence of this work to prospective business students and their prospective employers through university and business school websites

Translating Middle English (Im)politeness: The Case of Geoffrey Chaucer’s Miller’s Tale

Some of the bawdy details of Chaucer’s Canterbury Tales continue to pose challenges to translators, who must find renderings that are both descriptively and stylistically adequate. The Miller’s Tale provides an illustrative case study, in which the drunken narrator describes Nicholas’s rather physical wooing of the carpenter’s wife Alisoun in graphic detail. Existing translations of the key term queynte range from the flowery euphemism to the straightforward vulgarism. An appropriate translation into present-day English needs to be based not only on sound philological analysis, but also on a careful evaluation of the register of the original Middle English expression. This article offers a corpus-based assessment of relevant candidate expressions in order to propose a translation that captures the appropriate level of (im)politeness, both of the narrator towards his fellow pilgrims and of Chaucer towards his readers

Investigation of Nanoparticles in High Resolution Scanning Electron Microscopy (SEM) and Low Voltage SEM by Digital Image-Analysis

Small particles (Cu, Ag, In, Sn, Au, also MgO and NaCl) were prepared in the diameter range from 1 nm to 100 nm on different conductive substrates by thermal evaporation in high-vacuum or in an inert gas atmosphere. Imaging of the particles was performed in a high resolution scanning electron microscope (HRSEM) that can also be operated at low beam voltages of a few hundred volts. This mode of operation is called low voltage SEM (LVSEM). Scanning electron micrographs were taken at different beam voltages VO (0.5-30 kV). The micrographs were digitally recorded and analyzed with an image processing system operated on-line to the HRSEM. Grey-value line profiles and densitometric quantities of single particles, as well as the contrast between particle and substrate, changed with VO. The results for tin-particles on a bulk carbon substrate are shown. In all cases considered, only positive contrasts, i.e., particles looking brighter than the substrate, were obtained. The main contrast producing mechanism is, therefore, assigned to effects that include the particle\u27s geometrical properties of size, shape and surface. Sn-, In-, and Ag-particles, imaged in the secondary electron (SE) mode showed significantly larger particle diameters, as did images simultaneously recorded with transmitted electrons; however, Au-particles did not show that difference. This effect may be qualitatively explained by SE resulting from decaying plasmons

Fermion Determinants

The current status of bounds on and limits of fermion determinants in two, three and four dimensions in QED and QCD is reviewed. A new lower bound on the two-dimensional QED determinant is derived. An outline of the demonstration of the continuity of this determinant at zero mass when the background magnetic field flux is zero is also given.Comment: 10 page

Picture database of morphed faces (MoFa) : technical report

In the present study, a morphing and picture processing procedure was used to create a database of 100 face-pairs, which were morphed into one another in steps of 5%. Furthermore, 240 face stimuli were also included that were not morphed but may be used for control purposes. The face stimuli chosen for this database were with minimal or neutral emotional facial expression. In two experiments, selected items of the face stimuli were rated by participants in order to reveal (a) the minimal degree to which a face can be morphed such that a physical change but no identity change is apparent and (b) the degree to which a face needs to be morphed such that the morphed face is perceived as representing a different person than the initial face. The results show that 35% morphed faces mainly seem to fulfill condition (a) while 70% morphed faces mainly fulfill condition (b), especially when outlying morph-pairs are excluded. In conclusion, the present database provides morphed stimulus material that was rated by a moderately large number of participants and may be used for broad experimental purposes

On the Phase Structure of the Schwinger Model with Wilson Fermions

We study the phase structure of the massive one flavour lattice Schwinger model on the basis of the finite size scaling behaviour of the partition function zeroes. At $\beta = 0$ we observe and discuss a possible discrepancy with results obtained by a different method.Comment: 3 pages (2 figures), POSTSCRIPT-file (174 KB), Contribution to Lattice 93, preprint UNIGRAZ-UTP 19-11-9