Digital Commons Network^™

Guidance Booklet On Safe Handling Of Nanoparticles, Declan Mccormack, Norbert Malanowski, Paul Sermon, Juergen Hoeck

Articles

Nanotechnologies are a fast evolving scientific and technological field with a high potential impact on science, economy and society. Like with all new and quickly developing technologies it is important to weigh benefits versus risks at the earliest possible convenience. Building on the results of the ImPart project, this booklet is intended to give a review of the actual knowledge in the field of nanospecific risks, deriving recommendations for the safe handling of nanoparticles for executives in industry, public organizations and NGOs. This booklet is also intended to give an outlook on possible developments in the near future and "life …

Plasma-Controlled Metal Catalyst Saturation And The Initial Stage Of Carbon Nanostructure Array Growth, Igor Levchenko, Ken Ostrikov, Davide Mariotti, Anthony Bruce Murphy

Articles

The kinetics of the nucleation and growth of carbon nanotube and nanocone arrays on Ni catalyst nanoparticles on a silicon surface exposed to a low-temperature plasma are investigated numerically, using a complex model that includes surface diffusion and ion motion equations. It is found that the degree of ionization of the carbon flux strongly affects the kinetics of nanotube and nanocone nucleation on partially saturated catalyst patterns. The use of highly ionized carbon flux allows formation of a nanotube array with a very narrow height distribution of half-width 7 nm. Similar results are obtained for carbon nanocone arrays, with an …

Missed Opportunities For Children?:An Exploration Of The Impact Of New Funding Mechanisms For Early Childhood Education And Care (Ecec) In Ireland, Bernie O'Donoghue Hynes, Noirin Hayes, Siobhan Bradley

Articles

This presentation begins with a review of the overall funding structure for early childhood education and care in Ireland. It moves on to look in detail at the impact of the changes to the social inclusion funding measures. It concludes with a review of the reaction of various Irish stakeholders to these changes that have resulted in a 'missed opportunities for children'.

Helicobacter Pylori-Induced Inhibition Of Vascular Endothelial Cell Functions: A Role For Vaca-Dependent Nitric Oxide Reduction, Nicholas P. Toblin, Gary Henehan, Ronan P. Murphy, John P. Atherton, Anthony F. Guinan, Steven W. Kerrigan, Dermot Cox, Paul A. Cahill, Philip M. Cummins

Articles

Epidemiological and clinical studies provide compelling support for a causal relationship between Helicobacter pylori infection and endothelial dysfunction, leading to vascular diseases. However, clear biochemical evidence for this association is limited. In the present study, we have conducted a comprehensive investigation of endothelial injury in bovine aortic endothelial cells (BAECs) induced by H. pylori-conditioned medium (HPCM) prepared from H. pylori 60190 [vacuolating cytotoxin A (Vac(+))]. BAECs were treated with either unconditioned media, HPCM (0-25% vol/vol), or Escherichia coli-conditioned media for 24 h, and cell functions were monitored. Vac(+) HPCM significantly decreased BAEC proliferation, tube formation, and migration (by up to …

The Use Of Litigation Screenings In Mass Torts: A Formula For Fraud?, Lester Brickman

Articles

The article critically examines the pervasive abuse of litigation screenings in mass tort cases, revealing a system driven by financial exploitation where medical evaluations are manipulated to generate lawsuits. These screenings, often designed to produce false positives, undermine the integrity of the legal system by creating a flood of specious claims. The analysis highlights how lawyers, doctors, and screening companies exploit legal loopholes and financial incentives, leading to billions of dollars in settlements and eroding public trust in the civil justice system.

Private Equity's Three Lessons For Agency Theory, William Wilson Bratton

Articles

No abstract provided.

Hand-Held Flyback Driven Coaxial Dielectric Barrier Discharge: Development And Characterization, Victor J. Law, Vladimir Milosavljevic, Neil O’Connor, James F. Lalor, Steven Daniels

Articles

The development of a handheld single and triple chamber atmospheric pressure coaxial dielectric barrier discharge driven by Flyback circuitry for helium and argon discharges is described. The Flyback uses external metal-oxide-semiconductor field-effect transistor power switching technology and the transformer operates in the continuous current mode to convert a continuous dc power of 10–33 W to generate a 1.2–1.6 kV 3.5 μs pulse. An argon discharge breakdown voltage of ∼768 V is measured. With a 50 kHz, pulse repetition rate and an argon flow rate of 0.5–10 argon slm (slm denotes standard liters per minute), the electrical power density deposited in …

Three-Body Equations Of Motion In Successive Post-Newtonian Approximations, Carlos O. Lousto, Hiroyuki Nakano

Articles

There are periodic solutions to the equal-mass three-body (and N-body) problem in Newtonian gravity. The figure-eight solution is one of them. In this paper, we discuss its solution in the first and second post-Newtonian approximations to General Relativity. To do so we derive the canonical equations of motion in the ADM gauge from the three-body Hamiltonian. We then integrate those equations numerically, showing that quantities such as the energy, linear and angular momenta are conserved down to numerical error. We also study the scaling of the initial parameters with the physical size of the triple system. In this way we …

A Web-Based And Mobile Environmental Management System, James Carswell, Keith Gardiner, Michela Bertolotto, Andrea Rizzini, A Mandrak

Articles

This paper describes a Web-based and mobile system specifically developed to monitor fish species at risk. Such a system integrates spatial functionality to allow users not only to visualise maps and metadata of the area of concern but also to perform context-aware queries and updating of spatial datasets. The spatial datasets are provided by the Canadian Department of Fisheries and Oceans (DFO) and the prototype is customised to the specific needs of the Great Lakes Laboratory for Fisheries and Aquatic Sciences (GLLFAS) Fish Habitat Section requirements for fish species at risk assessment. Currently, researchers, habitat biologists and enforcement officers have …

Extra-Large Remnant Recoil Velocities And Spins From Near-Extremal-Bowen-York-Spin Black-Hole Binaries, Sergio Dain, Carlos O. Lousto, Yosef Zlochower

Articles

We evolve equal-mass, equal-spin black-hole binaries with specific spins of a/mH 0.925, the highest spins simulated thus far and nearly the largest possible for Bowen-York black holes, in a set of configurations with the spins counter-aligned and pointing in the orbital plane, which maximizes the recoil velocities of the merger remnant, as well as a configuration where the two spins point in the same direction as the orbital angular momentum, which maximizes the orbital hang-up effect and remnant spin. The coordinate radii of the individual apparent horizons in these cases are very small and the simulations require very high central …

A Measurement Of The Rate Of Type Ia Supernovae At Redshift Z ≈ 0.1 From The First Season Of The Sdss-Ii Supernova Survey, Benjamin Dilday, Richard Kessler, Joshua Frieman, Michael W. Richmond, Et Al.

Articles

We present a measurement of the rate of type Ia supernovae (SNe Ia) from the first of three seasons of data from the SDSS-II Supernova Survey. For this measurement, we include 17 SNe Ia at redshift z ≤ 0.12. Assuming a flat cosmology with m = 0.3 = 1 − , we find a volumetric SN Ia rate of [2.93+0.17 −0.04(systematic)+0.90 −0.71(statistical)]×10−5 SNe Mpc−3 h3 70 year−1, at a volumeweighted mean redshift of 0.09. This result is consistent with previous measurements of the SN Ia rate in a similar redshift range. The systematic errors are well controlled, resulting in the …

Stationary Rotating Strings As Relativistic Particle Mechanics, Kouji Ogawa, Hideki Ishihara, Hiroshi Kozaki, Hiroyuki Nakano, Shinya Saito

Articles

Stationary rotating strings can be viewed as geodesic motions in appropriate metrics on a two dimensional space. We obtain all solutions describing stationary rotating strings in flat space time strings have infinite length with various wiggly shapes. Averaged value of the string energy, the angular momentum and the linear momentum along the string are discussed.

Tidal Disruption Flares From Recoiling Supermassive Black Holes, Stefanie Komossa, David Merritt

Articles

Supermassive black holes ejected from galaxy nuclei by gravitational wave recoil will carry a retinue of bound stars, even in the absence of an accretion disk. We discuss the observable signatures related to these stars, with an emphasis on electromagnetic flares from stars which are tidally disrupted by the black hole. We calculate disruption rates for the bound, and the unbound, stars. The rates are smaller than, but comparable to, rates for non-recoiling black holes. A key observational consequence is the existence of powerful off-nuclear and intergalactic X-ray flares. We also discuss other observable signatures associated with the bound stars, …

The Production Of High-Quality Video For E-Learning, Eugene Mcgovern, Audrey Martin, Roy Moore

Articles

As video capture, editing and transmission capabilities become more accessible, video is increasingly being considered when developing e-learning content. However, the skills required for video production are not commonly part of many e-learning developers backgrounds. This paper presents the experiences of academics from the spatial information sciences when developing high quality video content for an on-line e-learning module in Global Navigation Satellite Systems (GNSS). Video comprises one element of the module and is designed to, as far as possible, address the lack of ‘hands-on’ experience of GNSS equipment and observing procedures. The video element of the module was used by …

A Parallel Gravitational N-Body Kernel, Simon Portegies Zwart, Stephen Mcmillan, Derek Groen, Alessia Gualandris, Michael Sipior, Willem Vermin

Articles

We describe source code level parallelization for the kira direct gravitational Nbody integrator, the workhorse of the starlab production environment for simulating dense stellar systems. The parallelization strategy, called “j-parallelization”, involves the partition of the computational domain by distributing all particles in the system among the available processors. Partial forces on the particles to be advanced are calculated in parallel by their parent processors, and are then summed in a final global operation. Once total forces are obtained, the computing elements proceed to the computation of their particle trajectories. We report the results of timing measurements on four different parallel …

The Mediator As Fugu Chef: Preserving Protections Without Poisoning The Process, Maureen Laflin

Articles

No abstract provided.

Artlog: Archiving The Artistic Process, Yvonne Desmond, John Mcauley, Evin Mccarthy, Ciaran Mcdonnell, Charles Pritchard, Pat Donlon

Articles

Currently there is little or no formal attempt to document the processes an Irish artist undergoes when producing a piece of art. With Artlog we aim to provide the artistic community at the Tyrone Guthrie Centre, Annaghmakerring, Co. Monaghan with a forum to not only develop their profile as an artist but also to document their work practices. In this paper we describe how Artlog came about, the relationship between the aesthetics and the importance of heritage, the approach of the project team in organising the archive and finally how interdisplinary collaboration has impacted the project.

Famous For Fifteen Minutes: Ip And Internet Social Networking, Patricia S. Abril, Jonathan Darrow, Peter Ludlow, Michael J. Monahan

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No abstract provided.

Health Privacy In A Techno-Social World: A Cyber-Patient's Bill Of Rights, Patricia S. Abril, Anita Cava

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No abstract provided.

Hubble Space Telescope Near-Infrared Snapshot Survey Of 3cr Radio Source Counterparts. Ii. An Atlas And Inventory Of The Host Galaxies, Mergers, And Companions, David J.E. Floyed, David J. Axon, Stefi A. Baum, Christopher P. O'Dea, Et Al.

Articles

We present the second part of an H-band (1.6 μm) “atlas” of z < 0.3 3CR radio galaxies, using the Hubble Space Telescope Near Infrared Camera and Multi- Object Spectrometer (HST NICMOS2). We present new imaging for 21 recently acquired sources, and host galaxy modeling for the full sample of 101 (including 11 archival) – an 87% completion rate. Two different modeling techniques are applied, following those adopted by the galaxy morphology and the quasar host galaxy communities. Results are compared, and found to be in excellent agreement, although the former breaks down in the case of strongly nucleated sources.

Condominium Arrangements In International Practice: Reviving An Abandoned Concept Of Boundary Dispute Resolution, Joel H. Samuels

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No abstract provided.

A New Method To Integrate (2+1)-Wave Equations With Dirac’S Delta Functions As Sources, Carlos O. Lousto, Hiroyuki Nakano

Articles

Unlike in the Schwarzschild black hole background, gravitational perturbations in a Kerr black hole background can not be decomposed into simple tensor harmonics in the time domain. Here, we make mode decompositions only in the azimuthal direction. As a first step, we discuss the resulting (2+1)-dimensional Klein-Gordon differential equation for scalar perturbations with a two dimensional Dirac’s -function as a source representing a point particle orbiting a much larger black hole. To make this equation amenable for numerical integrations we explicitly remove analytically the singular behavior of the source and compute a global, well behaved, effective source for the corresponding …

Locked Out: The 1905 Dispute Between The Agibsltu And The Master Builders Association, John Hogan

Articles

When the issue of a lockout in Dublin comes up for discussion, invariably, the Great Lockout of 1913 springs to mind. This event, in both its scale 4 and scope, has tended to crowd out the examination of all other lockouts that occurred in the city in the early years of the 20th century. Beside the Great Lockout contemporary industrial disputes have tended to pale in comparison. As a result of its magnitude, the 1913 lockout has provided a vast reservoir of research material that has been heavily mined. However, this concentration on 1913 could lead to the erroneous conclusion …

Survey Of Internet And At-Risk Behaviors, Samuel C. Mcquade Iii, Neel Sampat

Articles

In May 2007 though January 2008 fourteen Monroe County school districts in New York State participated in a major research study undertaken by the Rochester Institute of Technology (RIT). A major portion of the study was an online survey. It was designed to:

• Measure the nature and extent of online victimization and offending experiences of K-12th grade students
• Determine types and levels of supervision and role modeling employed by parents pertaining to the use of computers and portable electronic devices by their children; and
• Obtain information from teachers about their perceptions of school-related cyber abuse and crime, along with the …

Shared-Sensing And Control Using Reversible Transducers, Tuhin Das, Ranjan Mukherjee

Articles

As an alternative to self-sensing, we propose the concept of shared-sensing for reversible transducers. In shared-sensing, reversible transducers are continuously switched between actuator and sensor modes. This results in a hybrid system, and, in this paper, we investigate stability properties of the equilibrium for linear systems and a class of nonlinear systems with a single shared-sensing transducer. Our theoretical results are validated through simulations and experiments with a dc servo motor.

Working Report On The Status Quo Of Nanomaterials Impact On Health And Environment, Harald Krug, Margarita Apostolova, Marite Arija Bake, Gordon Chambers, Horia Chiriac, Eva Herzog, Victoria Hand, Jürgen Höck, Peter Hoet, Nicoleta Lupu, Declan Mccormack, Maja Remskar, George Robillard, Jamila Smisterova, Jan Stetkiewicz, Speranta Tanasescu, Aris Tsatsakis, David Vaughn, Peter Wick, Jörg Wörle-Knirsch

Articles

Nanotechnology is regarded as one of the key technologies of the future and associated with high expectations by politics, science and economy. Artificially produced nanosized particles and nanoscale system components have new properties which are of importance for the development of new products and applications. Such new properties of materials and substances result from the special properties of surfaces and interfaces and in part, from the geometric shape of the material. In theory nanoparticles (NPs) can be produced from nearly any chemical; however, most NPs that are currently in use today have been made from transition metals, silicon, carbon (single-walled …

Implementation Of Standard Testbeds For Numerical Relativity, M. C. Babiuc, S. Husa, D. Alic, I. Hinder, C. Lechner, E. Schnetter, B. Szilágyi, Yosef Zlochower, N. Dorband, D. Pollney

Articles

We discuss results that have been obtained from the implementation of the initial round of testbeds for numerical relativity which was proposed in the first paper of the Apples with Apples Alliance. We present benchmark results for various codes which provide templates for analyzing the testbeds and to draw conclusions about various features of the codes. This allows us to sharpen the initial test specifications, design a new test and add theoretical insight.

Motivating Individuals: Growing Research From A Fragile Base, Ellen Hazelkorn

Articles

Faculty around the world are experiencing changes in their academic work. While “traditional” universities are responding to demands for greater accountability and increased and timely outputs from research, faculty within new higher education institutions (HEIs) are undergoing a paradigm shift within three concentric circles of change. Not only do they have to alter their own academic practice, but their HEI is also undergoing a revolution at a time when higher education is itself being transformed. The article documents these changes, challenging the assumption that there is a homogeneous or “single academic profession” with a common experience of academic change, and …

The Hubble Space Telescope Advanced Camera For Surveys Coma Cluster Survey. I. Survey Objectives And Design, David Carter, Paul Goudfrooij, Bahram Mobasher, Dan Batcheldor, David Merritt, Et Al.

Articles

We describe the HST ACS Coma cluster Treasury survey, a deep twopassband imaging survey of one of the nearest rich clusters of galaxies, the Coma cluster (Abell 1656). The survey was designed to cover an area of 740 arcmin2 in regions of different density of both galaxies and intergalactic medium within the cluster. The ACS failure of January 27th 2007 leaves the survey 28% complete, with 21 ACS pointings (230 arcmin2) complete, and partial data for a further 4 pointings (44 arcmin2). Predicted survey depth for 10 detections for optimal photometry of point sources is g′ = 27.6 in the …

Rising Popularity Of Rankings, Ellen Hazelkorn

Articles

University rankings are creating a furore wherever or whenever they are published or mentioned. Politicians regularly refer to them as a measure of their nation’s virility or aspirations, universities use them to help set or define targets mapping their performance against the various metrics, while academics use rankings to bolster their own professional reputation and status. Despite their relatively short lifespan and mounting criticism of the methodologies employed, rankings have become a permanent feature of higher education in a growing number of countries around the world. Today, over 33 countries have some form of ranking system, operated by, interalia, government …