Digital Commons Network^™

The Fractal Market Hypothesis: Applications To Financial Forecasting, Jonathan Blackledge

Other resources

Most financial modelling systems rely on an underlying hypothesis known as the Efficient Market Hypothesis (EMH) including the famous Black-Scholes formula for placing an option. However, the EMH has a fundamental flaw: it is based on the assumption that economic processes are normally distributed and it has long been known that this is not the case. This fundamental assumption leads to a number of shortcomings associated with using the EMH to analyse financial data which includes failure to predict the future volatility of a market share value. This book introduces a new financial risk assessment model based on Levy statistics …

Connecting Micro-Generators In Parallel To The Low Voltage Distribution Network Utilising Standard En50438 In The Republic Of Ireland, Liam Murphy

Other resources

The green agenda has been much to the fore internationally and has particularly had an influence in Republic of Ireland (ROI) where there are ‘green’ ministers in Government. Mr. Eamon Ryan who is the Minister for Communications, Energy and Natural Resources has particularly championed the idea of self generation. The author’s interest in the subject matter is to investigate the up-take of micro-generation and determine the likely short term future along with the grid tie standard i.e. EN50438.

Issues surrounding micro-generation are considered from the international and national perspective and from a customer and generation utility point of view. The …

A Study Of Demoulding Force Prediction Applied To Periodic Mould Surface Profiles, Kevin Delaney, Giuliano Bissacco, David Kennedy

Conference Papers

Demoulding components without damage to either the components or tool is critical to successful replication processes. Accurate demoulding force prediction prior to tool fabrication helps designers optimize replication tools to minimize the demoulding force and resultant stress on replicated parts. Various models have been proposed to predict demoulding forces. One such model, the stair-step model, was developed by Colton et al for stereolithographic moulding tools. This paper investigates applying the model to other periodic surfaces with validation using published experimental data. In addition validity of the model for application to micro mould surfaces produced by micro milling is discussed.

A Study Of Friction Testing Methods Applicable To Demoulding Force Prediction For Micro Replicated Parts, Kevin Delaney, David Kennedy, G. Bissacco

Conference Papers

For replication processes to be deemed successful it must be possible to remove the replicated parts from the tool after processing. With decreasing part and feature size the challenge of demoulding replicated parts increases since the resulting parts and replication tooling used are more delicate and can be easily damaged. Predictive demoulding force models can be used to optimise the part, tool and process parameters to maximise the likelihood of success. Developing accurate models for this process requires knowledge of the dominant interfacial contributions to friction and knowledge of the size scale at which the dominant contributions operate together with …

Pvd And Cvd Coatings For The Metal Forming Industry, Simon Montgomery, David Kennedy, Noel O'Dowd

Conference Papers

Metal forming applications are, by their very nature, taxing on the tools and machines used to achieve a finished component. Material degradation and wear is of critical importance in any such operation as a failing in the tool or machine has the potential to cause health hazards and/or significant monetary losses. The wear of material is due to the contact of two opposing surfaces and their subsequent motion relative to each other. It can take many forms some examples of which are: a two or three body abrasive type, a rolling fatigue type or an adhesion type.

Much research has …

Demoulding Force Prediction For Micro Polymer Replication: A Review Of Relevant Literature, Kevin Delaney, G. Bissacco ., David Kennedy

Conference Papers

Demoulding components without damage to either the components or tool is critical to successful replication processes. During tooling development designers strive to optimize replication tools to minimize demoulding force and resultant stress on replicated parts. A critical element of this process is an accurate demoulding force prediction model. Various models have been proposed to predict demoulding forces, each showing limitations in its applicability. This paper reviews existing demoulding force models and parameters affecting demoulding force for micro polymer replication.

Transforming Academic Practice: Human Resources Challenges, Ellen Hazelkorn, Amanda Moynihan

Books/Book chapters

No abstract provided.

Development Of A Panchromatic Acrylamide Based Photopolymer For Multicolour Reflection Holography, Chakrapani Meka, Raghavendra Jallapuram, Izabela Naydenova, Suzanne Martin, Vincent Toal

Articles

The development of a panchromatic acrylamide based photopolymer (ABP) for holographic recording application is presented. The scattering of the recording medium was characterised by measuring the Bidirectional Scattering Distribution Function (BSDF). The dynamic range in reflection mode of recording was evaluated by measuring the diffraction efficiencies of the holographic gratings recorded individually at 633nm, 532nm, and 473nm wavelengths at spatial frequencies of 4200 l/mm, 5000 l/mm and 5700 l/mm respectively. Spectral characterisation of the reflection gratings recorded using a combined single RGB beam was carried out and the reconstructed wavelengths were monitored and compared with the recording wavelengths. The recorded …

Design And Fabrication Of Holographic Optical Elements For Applications In Electronic Speckle Pattern Interferometry And Laser Doppler Vibrometry, Viswanath Bavigadda, Emilia Mihaylova, Raghavendra Jallapuram, Vincent Toal

Conference Papers

An important area of application of holographic optical elements (HOEs) is in optical and electronic speckle pattern interferometry. The design, fabrication and characterization of holographic optical elements (HOEs) for electronic speckle pattern interferometry are presented. Reflection HOEs (RHOEs) were fabricated for use in electronic speckle pattern interferometers (ESPI) and laser Doppler vibrometers (LDV). The HOE-based interferometer is sensitive to out-of-plane displacements only. The results obtained are promising for future applications of the system for modal analysis.

Subsidiaries As Learning Engines: Understanding Middle Managers’ Searching For Knowledge As Micro-Foundation, Esther Tippmann, Pamela Sharkey Scott, Vincent Mangematin

Articles

A lot of research on MNC knowledge flows has concentrated on the organizational conditions that promote learning outcomes through a more efficient reuse of existing knowledge (cf. Gupta and Govindarajan 2000). Departing from this predominant research stream and recognising the increasingly important role of middle managers in large, distributed organizations, we investigated how subsidiary middle managers actually search for knowledge when dealing with non-routine problems and evaluated the solution outcomes in terms of generating organizational adaptation. By doing so, we contribute to several calls for more micro-level research of organizational learning processes (Felin and Foss 2005, 2009, Felin and Hesterly …

The Student Perspective: Can The Use Of Technologies Transform Learning?, Eileen O'Donnell

Books/Book Chapters

This chapter explores students’ perspectives on the transformations that the use of technology has brought to higher education. The use of technologies in higher education facilitates flexible learning environments but the benefits to students who engage with these technologies will only be realised if the design is pedagogically sound. The pedagogic approach employed by lecturers when designing their e-learning platforms or learning management systems has the capability to transform learning. The author’s discipline is Information Technology and Business Information Systems; from experience and case studies there is ample evidence to suggest that the use of technology does not always necessarily …

Project Formation And The Motivations And Challenges Of The Principal Investigator Role In Publicly Funded Research, Paul O'Reilly, Conor O'Kane, James Cunningham, Agnes Maciocha, Vincent Mangematin

Conference Papers

The principal investigators (PI) of publicly funded research projects are the key actors charged with direct responsibility for directing the research, reporting to the funding agency, and completing the project. Since the beginning of the 1990s the requirements for academic research and the management of academic research have undergone important changes, with the principal investigator now operating in a more complex environment and moved onto centre stage of industrial policy. Despite this shift, we continue to have a poor understanding of the PI role at a micro level. Set in an Irish context, this research employs thirty in-depth interviews with …

Towards An Understanding Of Students’ Use Of Audio Feedback: An Exploratory Study, Daire Hooper

Conference Papers

iCERi2010, Madrid, Spain.

Multi-Cultural Voices: Peer-Tutoring And Critical Reflection In The Writing Center, Gail Y. Okawa, Thomas Fox, Lucy J.Y. Chang, Shana R. Windsor, Frank Bella Chavez Jr., Laguan Hayes

The Writing Center Journal

No abstract provided.

Business Process Change In E-Government Projects: The Case Of The Irish Land Registry, Aileen Kennedy, Joseph Coughlan, Carol Kelleher

Articles

This research investigates one of the first e-Government services launched as part of Ireland’s Information Society programme, the Irish Land Registry’s implementation of their award winning Electronic Access (EAS) project. In-depth enquiries into how public sector organisations manage IT-enabled transformations have remained relatively limited and this case contributes to this emerging body of literature. The analysis highlights that the implementation of e-Government initiatives beyond basic service levels necessitates business process change in order to reap rewards. This study fulfils an identified need for research in Business Process Change (BPC) in the implementation of e-Government initiatives. In this way the research …

Web-Based Supply Chain Simulation: An Integrated Approach, Amr Arisha, Ayman Tobail, John Crowe

Conference papers

This is an era marked by rapid technology development in all different educational arenas. Alongside this growing demand of technology, learning process is getting new forms and hence traditional teaching approaches tend to struggle and lack the requisite qualities to meet new generation expectations. In third level education, this problem is increasing in magnitude and new dimensions, especially when it comes to teaching difficult subjects such as supply chain management. Understanding the complexity of supply chain networks and how to manage them create a considerable level of difficulty for students and professionals. Collaboration between supply chain members is now recognised …

Supply Chain Simulation: Experimentation Without Pain, Amr Arisha, Ayman Tobail, John Crowe

Conference papers

Bridging the gap between theory and practice has always been a key issue for students and graduates. The magnitude and scope of subject areas that students at third level institutions have to learn in theory means that visualising them without any practical experience can be very difficult. Understanding the complexity of supply chain networks and how to manage them create a considerable level of difficulty for students and professionals. Theories and applications included in supply chain management subjects are the key to empathise the real challenges. Nevertheless, teaching these theories needs substantial efforts and new innovative approaches to deliver the …

Forming Ireland's Industrial Development Authority, Paul Donnelly

Books/Book Chapters

Tracing the creation and (re)production of Ireland’s Industrial Development Authority (IDA) through the lens of path dependence theory, the story charts the IDA’s creation within protectionism. In parallel with the gradual shift away from protection towards free trade, the story follows the IDA’s emergence as the state’s pre-eminent industrial development agency, its re-creation as a state-sponsored organisation and the growing political, institutional and monetary resources afforded it in return for delivery on objectives, largely in the shape of new job creation. However, the increasing reliance on foreign investment to meet targets, at the expense of indigenous industry, eventually surfaces as …

Institutionalizing Ireland’S Industrial Development Authority, Paul Donnelly

Conference papers

Actor-network theory is considered to have great potential for broadening and deepening our grasp of institutional work (Lawrence and Suddaby, 2006). Given its focus on process, ANT offers a means to breathe life into the practices associated with institutionalization. With Callon’s (1986) four moments of translation as analytical lens, and with Ireland’s Industrial Development Authority as empirical example, I seek to address the concerns in the call for papers to reconsider ‘the role of agency, power, persistence and change in the process of institutionalization.’

Simulation Algorithm And Validation Of A Photovoltaic Water Pumping System, I. Odeh, Y. Yohannis, Brian Norton

Articles

A photovoltaic (PV) water pumping system has been modelled using TRNSYS considering a power supply, a direct current (DC)/alternating current (AC) inverter, an AC induction motor, a centrifugal pump, a well, a water storage tank, and an overflow protection device. The model emulates actual pumping head curves, uses numerical methods to determine pump system working points, and includes a storage tank as a component in the system. It simulates PV-powered water pumping systems, constant voltage tracking, voltage frequency modulation, and maximum power point tracking algorithms; variable inverter frequency with variable motor efficiency, variable inverter frequency with constant motor efficiency, and …

The Role Of Sustainability In Scm: The Case Of The Sustainable Packaging Supply Chain, Edward Sweeney

Practitioner Journals

No abstract provided.

Integration, Alignment And Ict In Supply Chains, Edward Sweeney

Other Resources

No abstract provided.

Supply Chain Management, Economic Volatility And Ict, Edward Sweeney

Other Resources

No abstract provided.

An Investigation Of The Rwpe Prostate Derived Family Of Cell Lines Using Ftir Spectroscopy, M. Baker, Colin Clarke, D. Demoulin, J. Nicolson, Fiona Lyng, Hugh Byrne, C. Hart, M. Brown, N. Clarke, P. Gardner

Articles

Interest in developing robust, quicker and easier diagnostic tests for cancer has lead to an increased use of Fourier transform infrared (FTIR) spectroscopy to meet that need. In this study we present the use of different experimental modes of infrared spectroscopy to investigate the RWPE human prostate epithelial cell line family which are derived from the same source but differ in their mode of transformation and their mode of invasive phenotype. Importantly, analysis of the infrared spectra obtained using different experimental modes of infrared spectroscopy produce similar results. The RWPE family of cell lines can be separated into groups based …

Ultrasound-Assisted Swnts Dispersion: Effects Of Sonication Parameters And Solvent Properties, Qiaohuan Cheng, Sourabhi Debnath, Elizabeth Gregan, Hugh Byrne

Articles

Ultrasonication is widely used for preparing Single-Walled Carbon Nanotube (SWNT) dispersions in different solvent media and it has been shown to play a critical role in dispersing and debundling SWNTs. The strong shear force that can exfoliate the SWNT bundles during sonication comes from cavitation, which entails a process of bubble formation, growth, and collapse. The efficiency of the cavitation process is closely correlated to many solvent parameters, including vapor pressure, viscosity, and surface tension, as well as the sonication frequency, intensity, and time. In this study, SWNTs were dispersed in a range of organic solvents assisted by tip sonication. …

Dit Teaching Fellowship Reports 2009-2010, Jen Harvey

Teaching Fellowships

No abstract provided.

Harmonizing Technology With Interaftion In Blended Problem-Based Learning, Roisin Donnelly

Journal Articles

This paper discusses the harmonizing role of technology and interaction in a qualitative study on blended 22 problem-based learning within the context of academic development in higher education. Within this 23 setting, and as both designers and tutors in blended PBL, it is important to seek best practices for how 24 to combine instructional strategies in face-to-face and computer-mediated environments that take 25 advantage of the strengths of each and avoid their weaknesses. A qualitative study of the lived experi- 26 ences of 17 academic staff participants in a blended problem-based learning module was considered 27 likely to provide a …

A Project-Based Learning Approach To Applied Craft Calculations Within Apprenticeship Education: An Action Research Study, Kevin Furlong

Theses

Using an Action Research methodology, this study was based in Technologicl University Dublin and conducted with the cooperation of three groups of Phase Six Plumbing apprentices over a ten-month period (three cycles). The main aim of the research project was to establish if a deeper understanding and application of Building Services Applied Calculations could be achieved through the implementation of Project-Based Learning within Apprenticeship Education? Research literature shows that not only in Ireland but also abroad, third level education is experiencing what is described as a ‘maths problem’. With applied calculations and mathematics being a fundamental and essential part of …

Quantitative Modelling Approaches For Ascorbic Acid Degradation And Non-Enzymatic Browning Of Orange Juice During Ultrasound Processing, Vasilis Valdramidis, Patrick J. Cullen, Brijesh Tiwari, Colm O’Donnell

Articles

The objective of this study was to develop a deterministic modelling approach for non-enzymatic browning (NEB) and ascorbic acid (AA) degradation in orange juice during ultrasound processing. Freshly squeezed orange juice was sonicated using a 1,500 W ultrasonic processor at a constant frequency of 20 kHz and processing variables of amplitude level (24.4 – 61.0 μm), temperature (5 – 30 oC) and time (0 – 10 min). The rate constants of the NEB and AA were estimated by a primary model (zero and first order) while their relationship with respect to the processing factors was tested for a number of …

Postharvest Hardness And Color Evolution Of White Button Mushrooms (Agaricus Bisporus)., Debabandya Mohapatra, Zuberi M. Bira, Joseph Kerry, Jesus Maria Frias, Fernanda A.R. Oliveira

Articles

The quality evaluation of mushrooms was studied by storing fresh white button mushroom (Agaricus bisporus) for 6-8 days, at various controlled temperature conditions (3.5 -15°C) and measuring the instrumental textural hardness and color of the mushroom cap for different product batches. A non linear mixed effect weibull model was used to describe mushroom cap texture and color kinetics during storage considering the batch variability into account. Storage temperature was found to play a significant role in controlling texture and colour degradation. On lowering storage temperature i) the extent of the final browning extent in the mushroom after storage …