Digital Commons Network^™

Egoviz – A Mobile Based Spatial Interaction System, Keith Gardiner, Junjun Yin, James Carswell

Articles

This paper describes research carried out in the area of mobile spatial interaction and the development of a mobile (i.e. on-device) version of a simulated web-based 2D directional query processor. The TellMe application integrates location (from GPS, GSM, WiFi) and orientation (from digital compass/tilt sensors) sensing technologies into an enhanced spatial query processing module capable of exploiting a mobile device’s position and orientation for querying real-world 3D spatial datasets. This paper outlines the technique used to combine these technologies and the architecture needed to deploy them on a sensor enabled smartphone (i.e. Nokia 6210 Navigator). With all these sensor technologies …

Figurational Dynamics And Parliamentary Discourses Of Living Standards In Ireland, Paddy Dolan

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While the concept of living standards remains central to political debate, it has become marginal in sociological research compared to the burgeoning attention given to the topic of consumer culture in recent decades. However, they both concern how one does and should consume, and, indeed, behave at particular times. I use the theories of Norbert Elias to explain the unplanned but structured (ordered) changes in expected standards of living over time. This figurational approach is compared to other alternative explanations, particularly those advanced by Bourdieu, Veblen and Baudrillard. Though these offer some parallels with Elias’s theories, I argue that consumption …

Microwave-Assisted Synthesis Of Zno Micro-Javelins, Suresh Pillai, Declan Mccormack, John M. Kelly, Sibu C. Padmanabhan

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The microwave (MW)-assisted formation of ZnO micro-javelins from zinc nitrate and urea in aqueous solution is described. The particles (named as ‘micro-javelins’ because of their high aspect ratio and needle-like tips) grow hexagonally with well-defined facets in the h0110i direction and pointed tips in (0001) direction. Powder X-ray diffraction patterns show the appearance of a strikingly dominant (1000) orientation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations reveal the morphological evolution of these hexagonal ZnO particles with time. The effect of precursor concentrations, counterion type andMWirradiation power and their consequent influence on pH and Zn2+ ion concentration are …

“We Are Going To Rape You And Taste Tutsi Women”: Rape During The 1994 Rwandan Genocide, Christopher W. Mullins

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Over the past decades, scholars have paid greater attention to sexual violence, in both theorization and empirical analysis. One area which has been largely ignored, however, is the sexual violence during times of armed conflict. This paper examines the nature and dynamics of sexual violence as it occurred during the 1994 Rwandan genocide. Drawing upon testimonies given to the International Criminal Tribunal for Rwanda (ICTR), descriptions of rapes--both singular and mass—were qualitatively analyzed. In general, three broad types of assaults were identified: opportunistic, assaults which seemed to be a product of the disorder inherent within the conflict; episodes of sexual …

A Mechanism Of Transferring Manufacturing Competences To Increase Market Performance, Kun Liao, Ying Liao, Qiang Tu

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This study uses competence transferring theory to establish a mechanism for transferring competence from the outside of an organization. Data were collected in the US from over 300 manufacturing companies. The mechanism of competence transferring is empirically supported. Also, the transferred competences increase manufacturing process competences including process automation, process integration, and process modularity. Furthermore, the process competences lead to higher market performance of firms.

Augmentation Of Macular Pigment Following Implantation Of Blue Light-Filtering Introcular Lenses At The Time Of Cataract Surgery, John Nolan, Philip O'Reilly, James Loughman, Jim Stack, Edward Loane, Eithne Connolly, Stephen Beatty

Articles

PURPOSE. (Photo)-oxidative stress is believed to play a role in the pathogenesis of age-related macular degeneration (AMD), with the threshold for retinal damage being lowest for short-wavelength (blue) light. Macular pigment (MP), consisting of the carotenoids lutein (L), zeaxanthin (Z) and meso-Z, has a maximum absorption at 460 nm and protects the retina from (photo)-oxidative injury. This study was designed to investigate whether the blue light–filtering properties of the Alcon AcrySof Natural intraocular lens (ANIOL) implanted during cataract surgery affects MP optical density (MPOD). METHODS. Forty-two patients scheduled for cataract surgery were recruited for the study. These patients all had …

The Language Of Food: A Review Of The 2009 Oxford Symposium On Food And Cookery, Máirtín Mac Con Iomaire

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This article reviews the 2009 Oxford Symposium on Food and Cookery, which was held in St. Catherine's College, Oxford. This year's theme was Food and Language and over forty papers were delivered to and audience of over two hundred leading food writers, historians, scientists, anthropologists, linguists, culinary students, and general food enthusiasts.

Relationship Of Paroxysmal Atrial Tachyarrhythmias To Volume Overload, Rajat Jhanjee Md, Grant A. Templeton Md, Srinivasan Sattiraju Md, John Nguyen Md, Simon Milstein Md, Laura Van Heel, Keith G. Lurie Md, David Benditt Md

Articles

BACKGROUND:

Clinical experience suggests that atrial tachyarrhythmias (ATs) are a frequent comorbidity in heart failure patients with left ventricular systolic dysfunction and that volume overload may increase AT susceptibility. However, substantiating this apparent relationship in free-living patients is difficult. Recently, certain implantable cardioverter-defibrillators provide, by measuring transpulmonary electric bioimpedance, an index of intrathoracic fluid status (OptiVol index [OI]). The goal of this study was to determine whether periods of greater intrathoracic fluid congestion (as detected by OI) correspond with increased AT event frequency.

METHODS AND RESULTS:

This analysis retrospectively assessed the relation between AT events and OI estimate of volume …

The Potato In Irish Cuisine And Culture, Máirtín Mac Con Iomaire, Pádraic Óg Gallagher

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This article will discuss the introduction of the potato from its South American origin into Irish cuisine and culture. The authors will outline the stages of devopment from introduction to acceptance as a winter vegetable, to widespread acceptance, moving on to overdependence and leading to subsequent famine. The article will discuss the varieties of potatoes used, the methods of production at different levels of society, and a number of quintessentially Irish potato dishes including boxty, champ, and colcannon, which will be compared with similar potato dishes in other cultures.

Theorizing Transnational Law - Observations On A Birthday, Susanne Baer

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There are many ways to theorize transnational law. As always, there is a mainstream, and there are “sidestreams.” However, it may be more interesting to consider from which direction such theories develop. Here, in appreciation of what the German Law Journal did to transnational legal conversations, I suggest to consider three directions in transnational legal studies: (1) theorizing from above; (2) theorizing from below; and (3) theorizing from inside. As you will see, much of the theories are in the German Law Journal (GLJ).

Photopolymers: Beyond The Standard Approach To Photosensitisation, Izabela Naydenova, Suzanne Martin, Vincent Toal

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A photopolymerizable material for use in the visible normally consists of a dye sensitizer, a free radical generator, monomer/monomers and, optionally, a binder, and is prepared usually as a dry or liquid film. Upon illumination with light of appropriate wavelength, a photopolymerisation reaction is triggered, leading to a change in the film’s refractive index. Because the presence of the dye is essential, the film is usually made sensitive to light during its preparation. Here we separate the film preparation and the sensitisation processes. In this way the photopolymerisation process can be used to detect dye labelled analytes, providing an alternative …

Spectroscopic Investigation Of The Anatase-To-Rutile Transformation Of Sol-Gel Synthesised Tio2 Photocatalysts, Nicholas Nolan, Suresh Pillai, Michael Seery

Articles

Among the three major phases in titania, anatase is reported to be a better photocatalytically active phase. Anatase to rutile transformations, under normal conditions, usually occurs at a temperatue range of 600- 700 °C. Various chemical additives have previously been employed to extend the anatase transition to higher temperatures. Effect of employing various concentrations of formic acid and water on phase transition has systematically been studied by XRD, FTIR and Raman spectroscopy. A considerably higher anatase phase (41%) has been obtained at 800 ºC and 10% anatase composition is retained after annealing the materials at 900 ºC for the optimised …

Influence Of Solar Heating On The Performance Of Integrated Solar Cell Microstrip Patch Antennas, Maria Roo Ons, S. Shynu, M Seredynski, Max Ammann, Sarah Mccormack, Brian Norton

Articles

The integration of microstrip patch antennas with photovoltaics has been proposed for applications in autonomous wireless communication systems located on building façades. Full integration was achieved using polycrystalline silicon solar cells as both antenna ground plane and direct current power generation in the same device. An overview of the proposed photovoltaic antenna designs is provided and the variation characterised of the electromagnetic properties of the device with temperature and solar radiation. Measurements for both copper and solar antennas are reported on three different commercial laminates with contrasting values for thermal coefficient of the dielectric constant.

Directional Dual-Band Slot Antenna With Dual-Bandgap High-Impedance-Surface Reflector, Xiulong Bao, Giuseppe Ruvio, Max Ammann

Articles

A compact dual-band high-impedance-surface EBG structure is employed as a reflector for a dual-band annular-slot antenna. The reflector comprises an array of miniaturized EBG cells which utilizes square patches augmented by four S-shaped corrugated arms to reduce the resonant frequency of the proposed EBG structure. In order to broaden the bandwidth and adjust the frequency ratio for the dual-band EBG structure, a log-periodic spacing between the S-shaped strips is introduced. The combination of microstrip-fed annular slot and EBG reflector provides directional properties for both frequency bands with reduced size and low-profile.

Dit’S Dynamic Speech Corpus, Dermot Campbell, Ciaran Mcdonnell, Marty Meinardi, Charles Pritchard, Bunny Richardson, Yi Wang

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The Technological University Dublin’s FLUENT Dynamic Speech Corpus is aimed at learners, teachers, authors and researchers. When the prototype is complete (target: July 2009) it will afford access to a unique audio resource based on dialogues. Users will be able to find samples of native-to-native speech on a chosen topic, listen to phonetically interesting sections and explore the dynamic environment which gave rise to the spoken features studied. At all stages the user will be able to slow down sequences for heightened intelligibility.

Effects Of High-Flux Neutron Beams On He-3 Cells Polarized In Situ With Spin-Exchange Optical Pumping, E. Babcock, S. Boag, M. Becker, W. C. Chen, T. E. Chupp, T. R. Gentile, Gordon L. Jones, A. K. Petukhov, T. Soldner, T. G. Walker

Articles

Polarized He-3 produced by spin-exchange optical pumping (SEOP) has potential as a neutron spin filter for polarization and polarization analysis in many neutron-scattering and neutron particle physics applications. The advantage of the SEOP method is its suitability for providing continuous stable polarization over the course of long experiments. However, we have discovered that exposure to high neutron flux leads to additional strong relaxation mechanisms in the optically polarized alkali-metal vapor used to polarize the He-3. At a neutron flux density of 4.7 x 10(9) cm(-2) s(-1), the alkali-metal relaxation rate increased from 100 to 1000 s(-1) leading to reduced alkali-metal …

Punitive Decisionmaking, William H. Rodgers

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No abstract provided.

Stochastic Particle Acceleration In The Lobes Of Giant Radio Galaxies, Stephen O'Sullivan, Brian Reville, Andrew Taylor

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We investigate the acceleration of particles by Alfv ́en waves via the second-order Fermi process in the lobes of giant radio galaxies. Such sites are candidates for the accelerators of ultra-high-energy cosmic rays (UHECR). We focus on the nearby Fanaroff–Riley type I radio galaxy Centaurus A. This is motivated by the coincidence of its position with the arrival direction of several of the highest energy Auger events. The conditions necessary for consistency with the acceleration time-scales predicted by quasi-linear theory are reviewed. Test particle calculations are performed in fields which guarantee electric fields with no component parallel to the local …

Copper(Ii) Complexes Of Coumarin-Derived Schiff Bases And Their Anti-Candida Activity, Bernadette S. Creaven, Michael Devereux, Dariusz Karcz, Andrew Kellett, Malachy Mccann, Andy Noble, Maureen Walsh

Articles

The condensation of 7-amino-4-methyl-coumarin (1) with a number of substituted salicylaldehydes yielded a series of Schiff bases (2a–2k) in good yields. Subsequent reaction of these ligands with copper( II) acetate yielded Cu(II) complexes (3a–3k) and some were characterised using X-ray crystallography. All of the free ligands and their metal complexes were tested for their anti-Candida activity.

Workplace Learning Courses In Irish Third-Level Colleges, Margaret Linehan, Irene Sheridan

Articles

Purpose – The purpose of this research is to ascertain data in relation to courses that are currently on offer in seven third-level institutions in Ireland which include elements of workplace learning. It is intended that the research findings will contribute to the provision of new workplace learning programmes in Irish third-level colleges.

Design/methodology/approach – A questionnaire was designed for this research and was administered in seven higher education colleges in Ireland. In total, 433 courses were examined in relation to workplace learning. Findings – The findings illustrate that there is still an over-reliance on the provision of traditional classroom-based …

Nonideal Magnetohydrodynamic Turbulent Decay In Molecular Clouds, Turlough Downes, Stephen O'Sullivan

Articles

It is well known that non-ideal magnetohydrodynamic effects are important in the dynamics of molecular clouds: both ambipolar diffusion and possibly the Hall effect have been identified as significant. We present the results of a suite of simulations with a resolution of 512-cubed of turbulent decay in molecular clouds incorporating a simplified form of both ambipolar diffusion and the Hall effect simultaneously. The initial velocity field in the turbulence is varied from being super-Alfvénic and hypersonic, through to trans-Alfvénic but still supersonic.

Guarantees For The Success Frequency Of An Algorithm For Finding Dodgson-Election Winners, Christopher Homan, Lane A. Hemaspaandra

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In the year 1876 the mathematician Charles Dodgson, who wrote fiction under the now more famous name of Lewis Carroll, devised a beautiful voting system that has long fascinated political scientists. However, determining the winner of a Dodgson election is known to be complete for the p 2 level of the polynomial hierarchy. This implies that unless P = NP no polynomial-time solution to this problem exists, and unless the polynomial hierarchy collapses to NP the problem is not even in NP. Nonetheless, we prove that when the number of voters is much greater than the number of candidates— although …

Objectivist Problematics: Planning For Leisure From An Experiential Perspective?, Ross Neville

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Despite the fact that the experiential perspective has had a profound impact on the way we view leisure behaviour, experiential matters have been renounced for being overtly subjective. As a corollary, experiential matters have been castigated for their inability to offer concrete criteria for leisure policy and the provisions of services. This paper argues that this dismissal of experiential matters is based on an overinflated dichotomy – the fact/value dichotomy – and that, by valorising objectivist approaches to managing leisure resources, experiential matters have become nothing more than a policy-making faux pas. The paper argues that while experiential matters bring …

Managing Indigenous Knowledge And Traditional Cultural Expressions: Is Technology The Solution?, Amber T. Burtis

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This paper discusses current issues surrounding the management of indigenous knowledge (IK) and traditional cultural expressions (TCEs) in libraries, archives and other cultural institutions. It addresses the need for: (1) ethical policies for the management of these knowledge systems, (2) critical approaches to the dominant library paradigm of information management, (3) recent efforts by the World Intellectual Property Organization and the American Library Association to craft policy on this topic, and (4) the need for and examples of collaboration with indigenous communities. Implications for social change with the implementation of socially responsible management systems are also considered.

Modeling No Emissions Of An Off-Road Diesel Engine Based On Emission Tests, David R. Bostic, Dennis G. Watson, Tony V. Harrison

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Emissions values determined by the ISO 8178 emission certification tests do not necessarily represent emissions of a tractor in operation (Hansson et al., 2001). Rather than using ISO 8178 tests solely for certification, data collected during the tests may be suitable for predicting nitrogen oxide (NO) emissions of an engine operating at constant loads and speeds. Linear multiple regression (LMR) and nonlinear polynomial network (NPN) models were developed with data collected from ISO 8178-4 (1996) test cycle B-type tests (ISO) and an expanded set of tests (EXP) to predict NO emissions from a diesel engine. LMR using the ISO training …

Modelling Browning And Brown Spotting Of Mushrooms (Agaricus Bisporus) Stored In Controlled Environmental Conditions Using Image Analysis, Catherine Barry-Ryan, Jesus Maria Frias, Leixuri Aguirre, Helen Grogan

Articles

Mushrooms have a short postharvest shelf life compared to most vegetables, due to a very high metabolic activity and high water content, making them prone to microbial spoilage and to exhibit enzymatic browning. Storage conditions and natural product variability are both important factors that affect the management of mushrooms, and both of them can be managed using monitoring systems. In order to study the effect of the temperature and relative humidity on the whiteness decrease and appearance of brown spotting, an image analysis system was employed. Twenty five batches of mushrooms were subjected to combinations of three storage temperatures (T) …

The Mexican Economic Crisis Of 1982 And The Brazilian Economic Crisis Of 1999:Critical Junctures In Economic Policy?, Ana Maza

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This paper utilises a new critical juncture framework to help us determine whether changes to Mexican macroeconomic policy in the early 1980s, and Brazilian macroeconomic policy at the turn of the century, were clean breaks with the past, or continuations of previously established policy pathways. The framework consists of three elements, which must be identified in sequence in order to declare, with some certainty, if an event was a critical juncture. These are crisis, ideational change, and radical policy change.

Identification Of Volatile Quality Markers Of Ready-To-Use Lettuce And Cabbage, Catherine Barry-Ryan, Michael Devereux, Julien Lonchamp

Articles

Volatile emission changes of ready-to-use vegetables directly result from minimal processing and can reflect the sensory changes occurring in the product. Based on the detection of key volatile compounds, novel on-line and consumer quality-monitoring methods can be developed. The aim of this study was to identify volatile biomarkers for a range of leafy green ready-to-use vegetables (Butterhead and Iceberg lettuce and Irish York cabbage). Headspace volatile compounds were monitored using gas chromatography/mass spectrometry (GC/MS). The sensory quality of the products was evaluated at days 1, 7 and 14 using sensory and analytical measurements. Changes of volatile concentrations and sensory attributes …

The Effects Of Acid Adaptation On Escherichia Coli Inactivation Using Power Ultrasound, Sonal Patil, Paula Bourke, Bridget Cullen, Jesus Maria Frias, Patrick Cullen

Articles

Inactivation of Escherichia coli in liquids was carried out using power ultrasound. Parameters examined included amplitude levels (0.4µm, 7.5 µm, 37.5 µm), treatment time, cell condition (non-adapted cells, acid adapted cells), liquid media (TSB, model orange juice and model apple juice) and E. coli strain (ATCC 25922, NCTC 12900). The efficacy of ultrasound treatment was found to be a function of amplitude level, treatment time and media (p0.95), with the highest inactivation achieved using an amplitude of 37.5 µm. The D-values of E. coli 25922 at all amplitudes in model orange juice were not significantly different than in TSB media. …

Orange Juices Enriched With Chitosan: Optimisation For Extending The Shelf-Life, Catherine Barry-Ryan, Ana Belen Martin-Diana, Daniel Rico, J. Barat

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Optimisation of the incorporation of chitosan in orange juice was accomplished by the evaluation of quality and nutritional markers. Response surface methodology was applied to obtain quadratic and second degree response surface model equations. The analyses showed that increases in chitosan concentration extended the quality of the orange juice significantly (p < 0.05), reducing enzymatic and non-enzymatic browning and controlling the spoilage during the storage time; however, concentrations N 1 g L− 1 produced a significant (p < 0.05) reduction in the concentrations of ascorbic acid and carotenoids associated with the positive charge of chitosan and its ability to flocculate and coagulate negatively charged substances. Also, concentrations N 1 g L− 1 were scored as unacceptable for the sensory panel due to an increase in bitterness. The study recommends the use of chitosan at concentrations up to 1 g L− 1 to extend quality and preserve ascorbic acid and carotenoids during storage time of fresh orange juice, thus avoiding the use of standard thermal treatments which produces a negative impact on the nutritional value. Industrial relevance: One of the major problems of fresh orange juice is its limited shelf-life. Spoilage and quick degradation of vitamins are two of the most important causes of quality loss during the shelf-life of this product. Moreover, the U. S. Food and Drug Administration issued a warning to consumers against drinking unpasteurised orange juice products because of the potential contamination with Salmonella typhimurium and its association with an outbreak of human disease caused by this organism [FDA issues nationwide health alert on Orchid Island unpasteurised orange juice. Products Recalls, Market Withdrawals and Safety Alerts.]. The main objective of this study was the study of chitosan as a natural preservative for extending the shelf-life of orange juice and as an alternative to pasteurisation.