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2012

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A Simulation Analysis Of Photovoltaic Ac Module Integrated Converters In Parallel, Under Controlled Edge Shading Conditions, Lynette O'Callaghan, Mick Mckeever, Brian Norton Jan 2012

A Simulation Analysis Of Photovoltaic Ac Module Integrated Converters In Parallel, Under Controlled Edge Shading Conditions, Lynette O'Callaghan, Mick Mckeever, Brian Norton

Conference Papers

A DC and AC power simulation comparison of: a Photovoltaic (PV) array with a modular, parallel, AC converter configuration; and a series, string configuration with a central AC converter, is presented. The systems are simulated using a comprehensive range of edge shading scenarios and irradiance conditions. Power control and transformation circuitry must be designed for shade and module mismatch tolerance to prevent over-proportional power to shade losses, as average losses from Building Integrated PV (BIPV) systems are approximately 20 to 25%, due to shade, mismatch, differences in orientation and inclination, and temperature effects. 59.4% of the simulations showed gains in …

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Portable Bridge Wim Data Collection Strategy For Secondary Roads, Bernard Enright, Cathal Leahy, Eugene J. Obrien, Jennifer Keenahan Jan 2012

Portable Bridge Wim Data Collection Strategy For Secondary Roads, Bernard Enright, Cathal Leahy, Eugene J. Obrien, Jennifer Keenahan

Conference papers

A common method of collecting traffic loading data across a large road network is to use a network of permanent pavement-based WIM systems. An alternative is to use one or more portable Bridge Weigh-In-Motion systems which are moved periodically between bridges on the network. To make optimum use of such a system, a suitable data collection strategy is needed to choose locations for the system. This paper describes a number of possible strategies which the authors have investigated for the National Roads Authority in Ireland. The different strategies are examined and their advantages and disadvantages compared. Their effectiveness at detecting …

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Occupational Noise Exposure Of Nightclub Bar Employees In Ireland, Gary Henehan, Aoife Kelly, Sara Boyd, Gordon Chambers Jan 2012

Occupational Noise Exposure Of Nightclub Bar Employees In Ireland, Gary Henehan, Aoife Kelly, Sara Boyd, Gordon Chambers

Articles

Due to the transposition of the EU Directive 2003/10/EC into Irish Law, the entertainment sector was obligated to comply with the requirements of the Safety, Health and Welfare at Work (General Application) Regulations 2007, Chapter 1 Part 5: Control of Noise at Work since February 2008. Compliance with the Noise Regulations was examined in 9 nightclubs in Ireland. The typical daily noise exposure of 19 bar employees was measured using 2 logging dosimeters and a Type 1 fixed position sound level meter. Physical site inspections identified nightclub noise control measures. Interviews and questionnaires were used to assess the managers and …

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Enhanced Refractometer Based On Periodically Tapered Small Core Singlemode Fiber, Pengfei Wang, Gilberto Brambilla, Ming Ding, Timothy Lee, Lin Bo, Yuliya Semenova, Qiang Wu, Gerald Farrell Jan 2012

Enhanced Refractometer Based On Periodically Tapered Small Core Singlemode Fiber, Pengfei Wang, Gilberto Brambilla, Ming Ding, Timothy Lee, Lin Bo, Yuliya Semenova, Qiang Wu, Gerald Farrell

Articles

Abstract—An all-fiber 1 refractive index (RI) sensor with a 2 simple configuration of periodical tapers is proposed and inves3 tigated experimentally. The proposed fiber RI sensor consists of 4 a small core fiber sandwiched between two standard singlemode 5 fibers, with tapers periodically fabricated along the small core 6 fiber using a focused CO2 laser beam. Such a structure can be 7 used for RI sensing by measuring the dip wavelength shift of 8 the multimode interference within the small core fiber cladding. 9 An average sensitivity of 226.6 nm/RIU (RI Unit) has been 10 experimentally achieved in the RI …

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A Note On Horner's Method, Tian-Xiao He, P. J.-S. Shiue Jan 2012

A Note On Horner's Method, Tian-Xiao He, P. J.-S. Shiue

Scholarship

Here we present an application of Horner's method in evaluating the sequence of Stirling numbers of the second kind. Based on the method, we also give an e_cient way to calculate the diference sequence and divided diference sequence of a polynomial, which can be applied in the Newton interpolation. Finally, we survey all of the results in Proposition 1.4.

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Eulerian Polynomials And B-Splines, Tian-Xiao He Jan 2012

Eulerian Polynomials And B-Splines, Tian-Xiao He

Scholarship

Here presented is the interrelationship between Eulerian polynomials, Eulerian fractions and Euler-Frobenius polynomials, Euler-Frobenius fractions, B-splines, respectively. The properties of Eulerian polynomials and Eulerian fractions and their applications in B-spline interpolation and evaluation of Riemann-zeta function values at odd integers are given. The relation between Eulerian numbers and B-spline values at knot points are also discussed.

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Using Quest3d To Develop Ves: A Tool For Enhancing Electrical Safety And Design In The Built Environment, Martin Barrett, Jonathan Blackledge Jan 2012

Using Quest3d To Develop Ves: A Tool For Enhancing Electrical Safety And Design In The Built Environment, Martin Barrett, Jonathan Blackledge

Conference papers

This paper presents a novel desktop virtual reality model titled Virtual Electrical Services (VES), developed to enhance electrical safety and design in the built environment. The model developed using Quest3D has the potential to be used as an industry design tool or as an educational tool for third level students and represents a significant watershed in how electrical services engineers can potentially design buildings and interpret their design decisions. A description of the software development process of the virtual reality model is presented along with the applications that were developed within the model. Based on the early implementation of this …

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Distributed Formal Concept Analysis Algorithms Based On An Iterative Mapreduce Framework, Ruairí De Fréin, Biao Xu, Eric Robson, Mícheál Ó Fóghlú Jan 2012

Distributed Formal Concept Analysis Algorithms Based On An Iterative Mapreduce Framework, Ruairí De Fréin, Biao Xu, Eric Robson, Mícheál Ó Fóghlú

Conference papers

While many existing formal concept analysis algorithms are efficient, they are typically unsuitable for distributed implementation. Taking the MapReduce (MR) framework as our inspiration we introduce a distributed approach for performing formal concept mining. Our method has its novelty in that we use a light-weight MapReduce runtime called Twister which is better suited to iterative algorithms than recent distributed approaches. First, we describe the theoretical foundations underpinning our distributed formal concept analysis approach. Second, we provide a representative exemplar of how a classic centralized algorithm can be implemented in a distributed fashion using our methodology: we modify Ganter’s classic algorithm …

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Learning Lessons From The Past: Legal Issues Arising From Ireland's Child Abuse Reports, Ursula Kilkelly Jan 2012

Learning Lessons From The Past: Legal Issues Arising From Ireland's Child Abuse Reports, Ursula Kilkelly

Irish Journal of Applied Social Studies

Inquiries have played an important role in telling the stories of children abused and neglected in Ireland in situations of family abuse, clerical abuse and institutional abuse. The inquiries – associated with the name of the chairperson (Ryan) or by their geographical remit (Dublin, Ferns, Cloyne, Kilkenny and Roscommon) – serve to vindicate the rights of the children affected and to identify the failure of the authorities to protect children from harm. They also make numerous recommendations as to how children’s treatment can be improved. Although each inquiry had varying terms of reference, scope and status, together they address a …

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Gendered Processes In Child Protection: 'Mother-Blaming' And The Erosion Of Men's Accountability, Majella Mulkeen Jan 2012

Gendered Processes In Child Protection: 'Mother-Blaming' And The Erosion Of Men's Accountability, Majella Mulkeen

Irish Journal of Applied Social Studies

The Inquiry Report of the Roscommon Child Care Case (HSE, 2010) was the first Inquiry Report into intra-familial child abuse and neglect in the Irish context to explicitly identify a gender dimension to its findings. This paper seeks to build on these observations and argues that an analysis of the gendering processes that underlie understandings of and responses to neglect, violence and abuse can make child protection policy and practice more effective. The absence of an analysis which places gender at the core of policy and practice in child protection and family support raises serious questions about the differentiated responses …

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Book Review: Child Sexual Abuse And The Catholic Church: Gender, Power And Organizational Culture, Rosaleen Mcelvaney Jan 2012

Book Review: Child Sexual Abuse And The Catholic Church: Gender, Power And Organizational Culture, Rosaleen Mcelvaney

Irish Journal of Applied Social Studies

No abstract provided.

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The Edition Freshers' Guide, 2012, Dit News Society Jan 2012

The Edition Freshers' Guide, 2012, Dit News Society

Student Publications

No abstract provided.

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Trust In The Information Society, Brian O'Neill Jan 2012

Trust In The Information Society, Brian O'Neill

Articles

Trust is an important feature for all users of the Internet who rely on the safety and security of network technologies and systems for their daily lives. Trust, or the lack of it, has also been identified by the European Commission’s Digital Agenda as a major barrier to further development of the information society in Europe. One of the areas in which concerns have been raised is in relation to children’s safety online. As a result, substantial efforts have been made by policymakers and by the industry to build greater trust and confidence in online digital safety. This paper examines …

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Striving For World Class Excellence: Rankings And Emerging Societies, Ellen Hazelkorn Jan 2012

Striving For World Class Excellence: Rankings And Emerging Societies, Ellen Hazelkorn

Books/Book chapters

No abstract provided.

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Wells For Zoe, Malawi And Dit Students From Various Disciplines, Catherine Bates Jan 2012

Wells For Zoe, Malawi And Dit Students From Various Disciplines, Catherine Bates

Posters

Since 2008 DIT students across disciplines have collaborated with Irish-Malawian charity Wells for Zoe. Students have spent up to three months in Malawi undertaking community-based projects on work placement modules, addressing the challenges facing local communities. In addition, DIT-based projects include pump design development and digital marketing projects.

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Smarter Travel Survey., Dublin Institute Of Technology, David O'Connor Jan 2012

Smarter Travel Survey., Dublin Institute Of Technology, David O'Connor

Posters

Poster displaying details of Smarter travel survey. Dublin City Council is seeking to have Drimnagh designated as a Smarter Travel town. Smarter Travel towns are areas where latest practices and investments in sustainable travel are piloted and reviewed. One of the initiatives being explored is a Personalised Travel Plan (PTP), whereby local people are encouraged to improve their travel behaviour via direct marketing. As part of UniverCities (part of the Creative Dublin Alliance) and Students Learning with Communities (SLWC) initiatives, DIT School of Spatial Planning agreed to carry out a survey of the local community to gauge interest in and …

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The Class Of 2012 Jan 2012

The Class Of 2012

The Park Place Economist

No abstract provided.

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China's Accession To The Wto: Economic Costs, Manh Dao '14, Cathy Geehan '14, Joshua Pandian '12 Jan 2012

China's Accession To The Wto: Economic Costs, Manh Dao '14, Cathy Geehan '14, Joshua Pandian '12

The Park Place Economist

In 2001, China achieved accession into the World Trade Organization (WTO) after more than ten years of politically charged negotiations. The unusually long negotiation period was an indicator of the controversy surrounding the issue, which remains heated to this day. Since China’s accession, economists and politicians around the world have been watching to monitor the outcome after the five year phase-in period. While China’s economic gains have been significant, and the increase in exports dramatic, China’s accession to the WTO has had numerous negative effects. Some of these negative effects are the adverse impacts on the environment, the disparity in …

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Electricity: A Cursed Resource?, Devin Long '12 Jan 2012

Electricity: A Cursed Resource?, Devin Long '12

The Park Place Economist

As is well documented in the media, the standard of living in many African countries is extremely low. In fact, in the most recent edition of the Human Development Report, released by the United Nations Development Programme (UNDP), thirty-seven of the forty-one countries classified as “low development” (the lowest ranking on the development scale), are African nations. It is equally well-known that many African nations are ‘blessed’ with valuable natural resource endowments that should bring enormous revenues to these countries. The disparity between theory and reality leads one to wonder, why do these revenues not raise the standard of living …

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Title Page Jan 2012

Title Page

The Park Place Economist

No abstract provided.

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Two Decades Of Excellence, Andrea Kerwin '12, Elizabeth Luibicich '14 Jan 2012

Two Decades Of Excellence, Andrea Kerwin '12, Elizabeth Luibicich '14

The Park Place Economist

The inaugural issue of The Park Place Economist was published in 1993, making this volume the 20th edition. Over the last twenty years, the journal has remained true to its goals of developing critical thinking skills, encouraging academic research, promoting leadership abilities, and establishing alumni connections. However, The Park Place Economist has evolved with each new volume, benefiting from the advances in technology that have been realized during its lifetime as well as featuring topics that reflect the economic conditions of the time.

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Where It All Began, Amy Chang '12, Michael Mayberger '14, Jake Mann '12 Jan 2012

Where It All Began, Amy Chang '12, Michael Mayberger '14, Jake Mann '12

The Park Place Economist

In celebration of the 20th issue of The Park Place Economist, this year's Alumni Editors are thrilled to feature three outstanding alumni who made significant contributions to the successful publication of the very first issue.

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Bilateral Aid To Least Developed Countries: A Study Of The U.S., The U.K., France And Japan, Dave Warren '12 Jan 2012

Bilateral Aid To Least Developed Countries: A Study Of The U.S., The U.K., France And Japan, Dave Warren '12

The Park Place Economist

Bilateral aid allocation is affected by a number of factors on the donor side. It has been found that public satisfaction with government positively affects the willingness to give bilateral aid (Gradstein and Chong, 2007). Economic and strategic interests of the donor country play a role in determining bilateral aid allocation (Tingley, 2009). Perhaps the most interesting finding is that ideology has a significant impact on bilateral aid allocation (Fleck and Kilby, 2001) (Milner and Tingley, 2010).

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Causes And Implications Of The U.S. Housing Crisis, Nicholas Kenaga '13 Jan 2012

Causes And Implications Of The U.S. Housing Crisis, Nicholas Kenaga '13

The Park Place Economist

The British sometimes use the phrase “safe as houses” to describe a sure bet or an investment that carries little to no risk. Until a few years ago, this expression held true in America as well, where housing prices had done nothing but steadily rise since the Great Depression, and the general public considered a home to be one of the best investments possible. As the nation headed into a new Millennium, mortgage loans were easy to come by and housing prices soared while the economy appeared to thrive. The government strongly encouraged Americans to own their own home, and …

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Financial And Labor Market Determinants Of Mortgage Delinquency Rates: Mclean County, 1985-2011, Jake Mann '12 Jan 2012

Financial And Labor Market Determinants Of Mortgage Delinquency Rates: Mclean County, 1985-2011, Jake Mann '12

The Park Place Economist

It is generally understood that the 2007- 2009 recession in the United States had its roots in the real estate market. To quote Schiller (2008): “a speculative bubble in the housing market (...) has now caused ruptures among many other countries in the form of financial failures and a global credit crunch” (p. 1). There is a growing body of literature on the economic impact of the bursting of this “speculative bubble”. Efforts have been directed at examining how financial institutions have been impacted and at considering different efforts to re-regulate this industry. As the economic recovery from this particular …

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Determinants Of American Stock Prices On A Firm-Specific Level, Cory Sloan '12 Jan 2012

Determinants Of American Stock Prices On A Firm-Specific Level, Cory Sloan '12

The Park Place Economist

As of January 2011, there were $ 14 trillion invested in the New York Stock Exchange (NYSE) and $55.6 trillion invested in all stock exchanges around the world (World Federation of Exchanges, 2011). To put that number into perspective, the US gross government debt at the same time was $13.5 trillion (US Government Debt, 2011). The US annual GDP, which is the highest in the world, was $14.58 trillion (WorldBank, 2011). Stocks are equities that allow investors to put their money into a company with the hopes of achieving a higher return than that of a savings account or bond. …

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Economics Of Salary Dispersion In The National Basketball Association, Dan Schouten '12 Jan 2012

Economics Of Salary Dispersion In The National Basketball Association, Dan Schouten '12

The Park Place Economist

In the business world, every firm faces salary allocation decisions. Managers and executives of companies have to ask themselves how to allocate salaries across positions. This question also applies to teams within the National Basketball Association (NBA). NBA players provide a differing amount of value to their respective team and therefore are worth different amounts of money in comparison to one another. General managers have to decide which players to sign as well as figure allocation decisions of the salary they distribute to their signed players. An important research question to consider is: What is the best way to allocate …

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An Insider Misuse Threat Detection And Prediction Language, Georgios Vasilios Magklaras Jan 2012

An Insider Misuse Threat Detection And Prediction Language, Georgios Vasilios Magklaras

School of Engineering, Computing and Mathematics Theses

Numerous studies indicate that amongst the various types of security threats, the problem of insider misuse of IT systems can have serious consequences for the health of computing infrastructures. Although incidents of external origin are also dangerous, the insider IT misuse problem is difficult to address for a number of reasons. A fundamental reason that makes the problem mitigation difficult relates to the level of trust legitimate users possess inside the organization. The trust factor makes it difficult to detect threats originating from the actions and credentials of individual users. An equally important difficulty in the process of mitigating insider …

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Gauge Invariant Constructions In Yang-Mills Theories, Poonam Sharma Jan 2012

Gauge Invariant Constructions In Yang-Mills Theories, Poonam Sharma

School of Engineering, Computing and Mathematics Theses

Understanding physical configurations and how these can emerge from the underlying gauge theory is a fundamental problem in modern particle physics. This thesis investigates the study of these configurations primarily focussing on the need for gauge invariance in constructing the gauge invariant fields for any physical theory. We consider Wu’s approach to gauge invariance by identifying the gauge symmetry preserving conditions in quantum electrodynamics and demonstrate how Wu’s conditions for one-loop order calculations (under various regularisation schemes) leads to the maintenance of gauge invariance. The need for gauge invariance is stressed and the consequences discussed in terms of the Ward …

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An Analysis Of Eastern European Liner Shipping During The Period Of Transition, Heidi Rebecca Cottam Jan 2012

An Analysis Of Eastern European Liner Shipping During The Period Of Transition, Heidi Rebecca Cottam

School of Engineering, Computing and Mathematics Theses

Transition in Europe is one of the most important transformations in modern history. This research investigates the impact of economic and political transition on the liner sector of post-Soviet Europe. Former socialist shipping corporations have begun to offer services under market conditions and left behind the rigid leeway of central planning (Cottam and Roe 2007). Extensive adjustments in ownership, organisation, fleets and markets have transpired. Successful transformation of the maritime industries has a major influence upon the speed and route of economic development in transition countries (Von Brabant 2011). Despite this, liner shipping has received very little attention from academia. …

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