Digital Commons Network^™

Imperfect Tools: Google Scholar Vs. Traditional Commercial Library Databases, Julie Arendt

Articles

No abstract provided.

Accelerating Time To Scientific Discovery With A Grid-Enhanced Microsoft Project, Gregor Von Laszewski, Leor Dilmanian

Articles

The composition, execution, and monitoring of challenging scientific applications is often a complex affair. To cope with the issue of workflow management, several tools and frameworks have been designed and put into use. However, the entry barrier to using these tools productively is high, and may hinder the progress of many scientists, or nonexperts, that develop workflows infrequently. As part of our Cyberaide framework we enable workflow definition, execution and monitoring through the Microsoft Project software package. The motivation for this choice is that many scientists are already familiar with Microsoft Project, a project management software package that is perceived …

A Cumulus Project: Design And Implementation, Lizhe Wang, Gregor Von Laszewski, Marcel Kunze

Articles

The Cloud computing becomes an innovative computing paradigm, which aims to provide reliable, customized and QoS guaranteed computing infrastructures for users. This paper presents our early experience of Cloud computing based on the Cumulus project for compute centers. In this paper, we introduce the Cumulus project with its various aspects, such as design pattern, infrastructure, and middleware.

Bad Timing?, Andrew Davidhazy

Articles

Another "vintage" article (in Word document format) from 1969 describing several applications of photography in the Distillation Research Laboratory at Rochester Institute of Technology. Added here in June 2007.

Improvised Lens Filter Thread Ding Repair Tool And Procedure, Andrew Davidhazy

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Most photographers have at one time of another run into a situation where the filter thread ring on the front of the lens has been bent in some accident and now there is a need to attach a certain filter or accessory to the lens's filter threads. Here is a guide to one solution. Added here in April 2008.

Equation Of State For A Van Der Waals Universe During Reissner–Nordstrom Expansion, Emil Prodanov, Rossen Ivanov, Vesselin Gueorguiev

Articles

In a previous work [E.M. Prodanov, R.I. Ivanov and V.G. Gueorguiev, Reissner-Nordström expansion, Astropart. Phys. 27 (2007) 150], we proposed a classical model for the expansion of the Universe during the radiation-dominated epoch based on the gravitational repulsion of the Reissner-Nordström geometry — naked singularity description of particles that "grow" with the drop of the temperature. In this work we model the Universe during the Reissner-Nordström expansion as a van der Waals gas and determine the equation of state.

Nearly-Hamiltonian Structure For Water Waves With Constant Vorticity, Adrian Constantin, Rossen Ivanov, Emil Prodanov

Articles

We show that the governing equations for two-dimensional gravity water waves with constant non-zero vorticity have a nearly-Hamiltonian structure, which becomes Hamiltonian for steady waves.

Shareholder Primacy's Corporatist Origins: Adolf Berle And The Modern Corporation, William Wilson Bratton, Michael L. Wachter

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No abstract provided.

Rethinking Indivisibility: Towards A Theory Of Supporting Relations Between Human Rights, James W. Nickel

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No abstract provided.

Damping Of Magnetorheological Elastomers, Lin Chen

Articles

The damping property of magnetorheological (MR) elastomers is characterized by a modified dynamic mechanical-magnetic coupled analyzer. The influences of the external magnetic flux density, damping of the matrix, content of iron particles, dynamic strain and driving frequency on the damping properties of MR elastomers were investigated experimentally. The experimental results indicate that the damping properties of MR elastomers greatly depend on the interfacial slipping between the inner particles and the matrix. Different from general composite materials, the interfacial slipping in MR elastomers is affected by the external applied magnetic field.

Globalization, Internationalization, And Rankings, Ellen Hazelkorn

Articles

Topics: Financing and Funding, Globalization and Internationalization, International and Foreign Students, Marketization and Commercialization and Academic Quality, Assessment and Accreditation.

Learning To Live With League Tables And Ranking: The Experience Of Institutional Leaders, Ellen Hazelkorn

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This paper draws on the results of an international survey of HE leaders and senior managers which was supported by the OECD Programme on Institutional Management of Higher Education (IMHE) and the International Association of Universities (IAU). It focuses on how HEIs are responding to league tables and rankings (LTRS), and what impact or influence – positive or perverse – they are having on institutional behaviour, decision-making and actions. The growing body of academic research and journalist reportage is referenced to contextualise this international experience. The paper shows that while HE leaders are concerned about the impact of rankings, they …

A Low Polarization Sensitivity All-Fiber Wavelength Measurement System, Ginu Rajan, Yuliya Semenova, Gerald Farrell, Qian Wang, Pengfei Wang

Articles

A low polarization-sensitive all-fiber wavelength measurement system using a twisted macro-bend fiber edge filter together with polarization-insensitive (PI) 3-dB coupler is presented. Eliminating the polarization-dependent loss (PDL) is essential when macro-bending single-mode fiber is utilized as an edge filter. A new bending configuration to eliminate the PDL of a fiber edge filter is proposed in this letter by twisting the fiber by 90deg between two bending sections with equal length. The PDL of this configuration retains a low value even while the bending length is increased to achieve a steeper response for the edge filter. This configuration together with a …

Dual Frequency Dual Circularly-Polarised Patch Antenna With Wide Beamwidth, Xiulong Bao, Max Ammann

Articles

A dual-frequency dual-circularly polarised patch antenna with wide beamwidth is proposed. The two-layer structure comprises circular patches with offset circular slots connected to rectangular slots. They provide orthogonal perturbations realising RHCP and LHCP for the lower and upper bands, respectively. The wide beamwidth is realised by extending the substrate beyond the groundplane. Measurements show a maximum beamwidth of 180deg and gains of 3.9 and 0.5 dBic for zenith and 10deg elevation, respectively, for the upper band. The measured beamwidth for the low band is 130deg with a maximum gain of 3.9 and -0.7 dBic for zenith and 10deg elevation, respectively. …

Ratiometric Wavelength Monitor Based On Singlemode-Multimode-Singlemode Fiber Structure, Agus Hatta, Gerald Farrell, Qian Wang, Ginu Rajan, Pengfei Wang, Yuliya Semenova

Articles

An all-fiber ratiometric wavelength monitor for optical wavelength measurement is proposed and is investigated theoretically and experimentally. Two edge filters with opposite slope spectral responses based on singlemode-multimode-singlemode (SMS) fiber structures are developed. A ratiometric wavelength measurement system employing the developed SMS edge filters demonstrates a high discrimination range of 20.41 dB and a potential wavelength measurement resolution of 10 pm over a wavelength range from 1530 to 1560 nm.

Development Of Neuro-Fuzzy Models To Account For Temporal And Spatial Variations In A Lumped Rainfall-Runoff Model, Ahmed Nasr, Michael Bruen

Articles

For many good and practical reasons, lumped rainfall-runoff models are widely used to represent a catchment‟s response to rainfall. However, they have some acknowledged limitation, some of which are addressed here using a neuro-fuzzy model to combine, in an optimal way, a number of lumped-sub-models. For instance, to address temporal variation, one of the sub-models in the combination may perform well under flood conditions and another under drier conditions and the neuro- fuzzy system would combine their outputs for each time-step in a manner depending on the prevailing conditions. Similarly to address spatial variation, one of the sub-models may perform …

The New Engineer: Between Employability And Social Responsibility, Eddie Conlon

Articles

The reasons behind the demand for what is sometimes called the New Engineer are critically examined and it is argued that a focus on employability alone is not sufficient to prepare socially responsible engineers. By examining issues around work organisation and sustainability it is proposed that engineers need to understand the wider social context in which they work. It is argued that the focus of ethics education should be broadened to focus on the social structure and the way it both enables and constrains socially responsible conduct. There is a call to refocus engineers’ attitudes towards the systems of regulation …

Supply Chain Management Diffusion Among Firms In The Republic Of Ireland, Edward Sweeney, Claudia-Maria Wagner, Bernd Huber

Articles

The changing business environment has sharpened the focus on the need for robust approaches to supply chain management (SCM) and the improvement of supply chain capability and performance. This is particularly the case in Ireland, which has the natural disadvantage of a location peripheral to significant markets and sources of raw materials which results in relatively high transport and distribution costs. Therefore, in order to gain insights into current levels of diffusion of SCM, a survey was conducted among 776 firms in the Republic of Ireland. The empirical results suggest that there is a need for more widespread adoption of …

Evaluation Of A Naive Model For Square Wave Voltammetry At A Microelectrode, Patrick Enright, John Cassidy, Tony Betts

Articles

A square wave voltammetric waveform ( SWV) was applied to an inlaid microdisk electrode in a solution of K4[Fe(CN)6]. A simple model relying on the assumption of steady state current throughout the scan was used to model the current potential behaviour. However, experimental peak current magnitudes were between 30% and 50% greater than those predicted by the model. The model predicts an increase of peak current and peak width at half height with pulse height Esw and no effect of the parameters frequency, f and step height, ΔEs. Experimental peak current magnitudes and peak current magnitudes predicted by the model …

Luminescent Solar Concentrators: A Review Of Recent Results, Wilfrid G.J.H.M. Van Sark, Keith W.J. Barnham, Lenneke H. Slooff, Amanda J. Chatten, Andreas Buchtemann, Andreas Meyer, Sarah Mccormack, Rolf Koole, Daniel J. Farrell, Rahul Bose, Evert E. Bende, Antonius R. Burgers, Tristram Budel, Jana Quilitz, Manus Kennedy, Toby Meyer, C. De Mello Donega, Andries Meijerink

Articles

Luminescent solar concentrators (LSCs) generally consist of transparent polymer sheets doped with luminescent species. Incident sunlight is absorbed by the luminescent species and emitted with high quantum efficiency, such that emitted light is trapped in the sheet and travels to the edges where it can be collected by solar cells. LSCs offer potentially lower cost per Wp. This paper reviews results mainly obtained within the framework of the Fullspectrum project. Two modeling approaches are presented, i.e., a thermodynamic and a ray-trace one, as well as experimental results, with a focus on LSC stability.

Application Of The Fractal Market Hypothesis For Modelling Macroeconomic Time Series, Jonathan Blackledge

Articles

This paper explores the conceptual background to financial time series analysis and financial signal processing in terms of the Efficient Market Hypothesis. By revisiting the principal conventional approaches to market analysis and the reasoning associated with them, we develop a Fractal Market Hypothesis that is based on the application of non-stationary fractional dynamics using an operator of the type
∂² / ∂x² − σ^q(t) * ∂ ^q(t)/ ∂t^q(t)

where σ⁻¹ is the fractional diffusivity and q is the Fourier dimension which, for the topology considered, (i.e. the one-dimensional case) is related to the Fractal …

Planning In The Irish Healthcare System; Legislative Strategy Or Administrative Control?, Vivienne Byers

Articles

Although strategic planning in healthcare has been in evidence in many OECD countries since the 1970s, it did not emerge in Ireland until the advent of legislatively mandated service planning in the 1990s. This occurred in the context of significant managerial, organisational and environmental change. One of the central mechanisms of the Strategic Management Initiative is the devolution of accountability and responsibility from the centre to the periphery. Service planning in the health sector in Ireland is seen as part of this strategic planning ethos. This paper reports on part of a wider study that examined both the intent and …

Foreword Interruptions And Intersections: Journeys To The Center Of The Americas, Francisco Valdes

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No abstract provided.

Exempt Organizations In The 2008 Election: Will Wisconsin Right To Life Bring Changes?, Frances R. Hill

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No abstract provided.

Corporate Political Speech And The Balance Of Powers: A New Framework For Campaign Finance Jurisprudence In Wisconsin Right To Life, Frances R. Hill

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No abstract provided.

How Not To Do Medical Malpractice Reform: A Florida Case Study, Mary I. Coombs

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No abstract provided.

Consumers Of Financial Services And Multi-Level Regulation In The European Union, Caroline Bradley

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No abstract provided.

Forcing Analogies In Law: Badiou, Set Theory, And Models, William H. Widen

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No abstract provided.

Plessy's Ghost: Grutter, Seattle And The Quiet Reversal Of Brown, D. Marvin Jones

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No abstract provided.

Enabling Location-Based Services In Data Centers, Krishna Kant, Neha Udar, R. Viswanathan

Articles

In this article, we explore services and capabilities that can be enabled by the localization of various assets in a data center or IT environment. We also describe the underlying location estimation method and the protocol to enable localization. Finally, we present a management framework for these services and present a few case studies to assess benefits of location-based services in data centers.