Digital Commons Network^™

The Compact, Issue 5, 1st Of February, 2006, Dit: Students' Union

DIT Student Union

No abstract provided.

The Compact, Issue 8, May, 2006, Dit: Students' Union

DIT Student Union

No abstract provided.

An Euler-Type Formula For Ζ(2k +1), Tian-Xiao He, Michael Dancs

Scholarship

In this short paper, we give several new formulas for ζ(n) when n is an odd positive integer. The method is based on a recent proof, due to H. Tsumura, of Euler’s classical result for even n. Our results illuminate the similarities between the even and odd cases, and may give some insight into why the odd case is much more difficult.

Numerical Approximation To Ζ(2n+1), Tian-Xiao He, Michael Dancs

Scholarship

In this short paper, we establish a family of rapidly converging series expansions ζ(2n +1) by discretizing an integral representation given by Cvijovic and Klinowski [3] in Integral representations of the Riemann zeta function for odd-integer arguments, J. Comput. Appl. Math. 142 (2002) 435–439. The proofs are elementary, using basic properties of the Bernoulli polynomials.

Multivariate Expansion Associated With Sheffer-Type Polynomials And Operators, Tian-Xiao He, Leetsch Hsu, Peter Shiue

Scholarship

With the aid of multivariate Sheffer-type polynomials and differential operators, this paper provides two kinds of general expansion formulas, called respectively the first expansion formula and the second expansion formula, that yield a constructive solution to the problem of the expansion of A(ˆt)f([g(t)) (a composition of any given formal power series) and the expansion of the multivariate entire functions in terms of multivariate Sheffer-type polynomials, which may be considered an application of the first expansion formula and the Sheffer-type operators. The results are applicable to combinatorics and special function theory.

On The Convergence Of The Summation Formulas Constructed By Using A Symbolic Operator Approach, Tian-Xiao He, Leetsch Hsu, Peter Shiue

Scholarship

This paper deals with the convergence of the summation of power series of the form Σ_{a ≤ k ≤ b}f(k)x^k, where 0 ≤ a ≤ b < ∞, and {f(k)} is a given sequence of numbers with k ∈ [a, b) or f(t) a differentiable function defined on [a, b). Here, the summation is found by using the symbolic operator approach shown in [1]. We will give a different type of the remainder of the summation formulas. The convergence of the corresponding power series will be determined consequently. Several examples such as the generalized Euler's transformation series will also be given. In addition, we will compare the convergence of the given series transforms.

Construction Of Rational Points On Elliptic Curves Over Finite Fields, Andrew Shallue, Christiaan Van De Woestijne

Scholarship

We give a deterministic polynomial-time algorithm that computes a nontrivial rational point on an elliptic curve over a finite field, given a Weierstrass equation for the curve. For this, we reduce the problem to the task of finding a rational point on a curve of genus zero.

Wideband Directional Base-Station Antenna With Dual-Linear And Circular-Polarization Capabilities, Francisco Lerma, Matthias John, Giuseppe Ruvio, Max Ammann, N. Herscovici

Conference papers

A crossed-dipole antenna providing polarization diversity is presented. The antenna which employs a planar reflector yields high directivity and good isolation between ports over a wide impedance bandwidth, suitable for polarization-agile wireless base-station use. The dipole wing shape is optimised, which yields the wide bandwidth. Matching is achieved using a quarter-wave balanced-to-unbalanced section which also improves the port-to-port isolation. Radiation characteristics for linear and circular polarizations are presented

Enhancing Waste Management Through Automatic Control, Aidan O'Dwyer

Conference papers

Meeting environmental requirements is recognised as one of the six 21st century business drivers for automatic control. The proportional integral (PI) and proportional integral derivative (PID) controllers are the most dominant form of automatic controllers in industrial use today. With these techniques, it is necessary to adjust the controller parameters according to the nature of the process. Thus, for effective control of a heating, cooling and air-conditioning (HVAC) application, for example, specific values need to be chosen for the P, I and D parameters, which will be different for the values required to control, for example, a distillation column. This …

Digital Signal Processing (Second Edition), Jonathan Blackledge

Books/Book chapters

This book provides an account of the mathematical background, computational methods and software engineering associated with digital signal processing. The aim has been to provide the reader with the mathematical methods required for signal analysis which are then used to develop models and algorithms for processing digital signals and finally to encourage the reader to design software solutions for Digital Signal Processing (DSP). In this way, the reader is invited to develop a small DSP library that can then be expanded further with a focus on his/her research interests and applications.

There are of course many excellent books and software …

The Tromped, An In-Flight Exercise Device To Prevent Flight Related Deep Vein Thrombosis, Carolyn Collins, David Kennedy, Thomas Corrigan, Stephen Jerrams

Conference Papers

Medical and Engineering research studies have shown the potential risks of long haul flight travel and methods of preventing it occurring. The risk of serious health problems or even death is known to arise from lack of venous movement and increased coagulation (clotting) of the blood. These factors contribute to the development of deep vein thrombosis (DVT) and this is more likely to occur in situations where people are seated for long periods during travel on land or in air. Currently long haul airlines have yet to be seen to introduce physical preventative measures against this syndrome.

A prototype design …

The Role And Future Of Nanotechnology In Research, Industry And Education, David Kennedy

Conference Papers

Major developments in Nanotechnology have taken place across the world
over the last few years. From a humble beginning, Ireland inc. became a leader in the Microelectronics industry and now has to face the challenge of developing a strategic plan to maintain its lead position in the nano field which in most cases will supersede the micro phase. Most countries are taking a similar path of development all be it alone or in collaboration with other countries. This process is expensive and requires market drivers and experts to lead and deliver demands from the industries of the future. The approach …

The Moon, Issue 2, December-January 2006, Dit Journalism Society

Student Publications

No abstract provided.

Our Views Anybody Listening: Researching The Views And Needs Of Young People In Co. Kildare, Kevin Lalor, Katie Baird

Reports

No abstract provided.

In-Use Emission Measurements Of Snowmobiles And Snowcoaches In Yellowstone National Park, Gary A. Bishop, Daniel A. Burgard, Thomas R. Dalton, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

A Collision Avoidance System For Autonomous Underwater Vehicles, Chiew Seon Tan

School of Engineering, Computing and Mathematics Theses

The work in this thesis is concerned with the development of a novel and practical collision avoidance system for autonomous underwater vehicles (AUVs). Synergistically, advanced stochastic motion planning methods, dynamics quantisation approaches, multivariable tracking controller designs, sonar data processing and workspace representation, are combined to enhance significantly the survivability of modern AUVs. The recent proliferation of autonomous AUV deployments for various missions such as seafloor surveying, scientific data gathering and mine hunting has demanded a substantial increase in vehicle autonomy. One matching requirement of such missions is to allow all the AUV to navigate safely in a dynamic and unstructured …

Convergence Improvement Of Iterative Decoders, Evangelos Papagiannis

School of Engineering, Computing and Mathematics Theses

Iterative decoding techniques shaked the waters of the error correction and communications field in general. Their amazing compromise between complexity and performance offered much more freedom in code design and made highly complex codes, that were being considered undecodable until recently, part of almost any communication system. Nevertheless, iterative decoding is a sub-optimum decoding method and as such, it has attracted huge research interest. But the iterative decoder still hides many of its secrets, as it has not been possible yet to fully describe its behaviour and its cost function. This work presents the convergence problem of iterative decoding from …

Mobility Support Architectures For Next-Generation Wireless Networks, Ql Wang

School of Engineering, Computing and Mathematics Theses

With the convergence of the wireless networks and the Internet and the booming demand for multimedia applications, the next-generation (beyond the third generation, or B3G) wireless systems are expected to be all IP-based and provide real-time and non-real-time mobile services anywhere and anytime. Powerful and efficient mobility support is thus the key enabler to fulfil such an attractive vision by supporting various mobility scenarios. This thesis contributes to this interesting while challenging topic. After a literature review on mobility support architectures and protocols, the thesis starts presenting our contributions with a generic multi-layer mobility support framework, which provides a general …

Antithesis: The Dialectics Of Software Art, Geoff Cox

School of Engineering, Computing and Mathematics Theses

Software art refers to the production of software as art rather than the use of software to produce art. This thesis situates software arts practice in relation to a dialectical materialist tradition that focusses attention on the site of production and the contradictions within the relations of production. By making reference to post-Marxist theories, it is argued that antagonisms associated with traditional forms of labour have been extended to include the labour of machines and software. Therefore any analysis of the labour involved in making art must recognise the ways in which labour has become more immaterial, collective and communicative. …

Strategy Development Processes And Subsidiary Contribution, Pamela Sharkey Scott, P. T. Gibbons

Conference Papers

Intensifying international competition, increasing volatility, and systemic technological and political transformations (Dunning, 1995; Hitt, Keats and DeMarie, 1998) constitute the current competitive landscape for organisational activities (Sampler, 1998). To successfully adapt to these challenges and find new ways to renew fast obsolescing firm-specific advantage (Buckley and Casson, 1976; 1998) a more holistic approach to organisational management is emerging. This involves the integration of the traditional strategic management or advantage seeking perspective with the more innovative or opportunity seeking dimensions of entrepreneurship (Hitt et al, 1998). Developing a culture of creating or identifying opportunities and exploiting them is fundamental to entrepreneurship …

Video Quality Measurement For 3g Handsets, Praveen Enjapuri

School of Engineering, Computing and Mathematics Theses

Internet provides many services. VOIP (Voice over IP) is one such service also known as Internet Telephony or IP Telephony. Using VOIP we can make voice telephony calls, participate in video conferences, etc over data networks (WAN'S and LAN'S) or internet. VOIP operates by first converting voice data into digital form, organizing them into packets, transmitting them through the most convenient route to their destination and finally reassembling them at the destination. Protocols like SIP/RTP, H.323, MGCP are designed which perform all the above steps. This project aims to make a video call from a 3G Mobile to an IP …

What Happened To…Dave Healy?

The Writing Center Journal

No abstract provided.

Announcements

The Writing Center Journal

No abstract provided.

Local Practices, National Consequences: Surveying And (Re)Constructing Writing Center Identities, Jo Ann Griffin, Daniel Keller, Iswari P. Pandey, Anne-Marie Pedersen, Carolyn Skinner

The Writing Center Journal

No abstract provided.

At Multicultural Center, Diversity Is A Way Of Life, Amelia Benner '09

Illinois Wesleyan University Magazine, 2002-2017

To the casual observer passing by on Park Street, Illinois Wesleyan’s Multicultural Center may not look like a catalyst for social change.

Nonlinear Interactions Of Waves And Currents With Structures In Nearshore Environments, Baoxing Wang

School of Engineering, Computing and Mathematics Theses

In this thesis, nonlinear interactions of waves and currents with structures in nearshore environments are investigated. The emphasis of the research is to model the encountered multiple scales of hydrodynamics (e. g. monochromatic waves and three-dimensional currents) in a numerically efficient and accurate way on a beach and around a structure in the shallow coastal region. The radiation stress and mass flux have been analytically derived by inclusion of higher-order surface elevations. The Boussinesq-type model COULWAVE is used to assess the fully nonlinear wave transformation on a beach. The research unveils the essential roles of the Ursell parameter, Irribarren number …

Non-Intrusive Subscriber Authentication For Next Generation Mobile Communication Systems, Philip Maurice Rodwell

School of Engineering, Computing and Mathematics Theses

The last decade has witnessed massive growth in both the technological development, and the consumer adoption of mobile devices such as mobile handsets and PDAs. The recent introduction of wideband mobile networks has enabled the deployment of new services with access to traditionally well protected personal data, such as banking details or medical records. Secure user access to this data has however remained a function of the mobile device's authentication system, which is only protected from masquerade abuse by the traditional PIN, originally designed to protect against telephony abuse. This thesis presents novel research in relation to advanced subscriber authentication …

Big Al's: Ten Years On, Gerry Mortimer

Case studies

This case study was developed by Gerry Mortimer of the Technological University Dublin. It was developed as a basis for class discussion, rather than to illustrate effective or ineffective handling of an administrative situation. The author acknowledges the assistance of research student Tara Rooney in preparing this case and of Simon Walker and Blathnaid Ni Fhatharta of Kepak Convenience Foods and Niamh MacHale of An Bord Bia (Irish Food Board) in facilitating its development.

Towards Non-Prescriptive Issues: A Teaching Framework For Selecting Marketing Dissertation Topics, Conor Horan

Conference papers

There is a significant absence in academic literature, textbooks and practical teaching tools for advising or guiding student learning, in a practical non-prescriptive manner, toward topic selection and development. Prescriptive or rational approaches, taken by many research methods textbooks, are not adequate or sufficient when teaching this important first stage in the research process. Non-prescriptive approaches describing manageable steps should be researched more to fill this pedagogic gap. This paper attempts to promote academic discussion on a pedagogic gap that is broadly overlooked, and to examine how marketing and business academics can better instruct dissertation students in the area of …

The Quality Movement Discourse In The Higher Education Sector: A General Review, Aidan Kenny

Level 3

This paper – the first of a series of three – describes some of the macro milestones in the evolution of the Quality Movement in the industrial environment. The emphasis then shifts to reviewing the discourse relating to quality in the higher education sector in the UK. Attention is given to Quality Assessment, Quality Assurance and Quality Enhancement models. The interface or tension lines between quality as a controlling mechanism or as a tool for development are outlined. Predominant concerns and issues as expressed by academics are clustered into macro questions, the answers to which will require further longitudinal research. …