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Larrucea X.,University of the Basque Country | O'Connor R.V.,Dublin University | Colomo-Palacios R.,Ostfold University College | Laporte C.Y.,Ecole de Technologie Superieure of Montreal
IEEE Software | Year: 2016

ISO/IEC 29110 is becoming the set of software-process guidelines most widely adopted by very small entities.

Magdy W.,Dublin University | Darwish K.,Microsoft
Proceedings of the 2010 10th International Conference on Intelligent Systems Design and Applications, ISDA'10 | Year: 2010

Recent library digitization projects attempt to provide large collections of printed material from varying sources in a searchable format. The scanned documents are typically processed using Optical Character Recognition (OCR), which typically introduces errors in the text. This paper proposes a technique for correction of OCR degraded text that is independent of character-level OCR errors, and hence independent of scanned document source. It is based on language modeling in conjunction with a uniform character model that uses edit distance only. The technique compares well to state-of-the-art correction techniques that are based on language modeling and source-specific character error models. Although the proposed technique yielded lower correction effectiveness, its impact on retrieval effectiveness is statistically significant and at par with state-of-the-art correction techniques. The main requirement of the proposed technique is the training of a "good" language model matching genre, style, and temporal coverage. The advantage of being independent of character level errors is clear in applications were printed documents vary in source, font, and degradation level. © 2010 IEEE.

Kennedy A.,Dundalk Institute of Technology | Wang X.,Dublin University
IEEE Transactions on Very Large Scale Integration (VLSI) Systems | Year: 2014

Packet classification is used by networking equipment to sort packets into flows by comparing their headers to a list of rules, with packets placed in the flow determined by the matched rule. A flow is used to decide a packet's priority and the manner in which it is processed. Packet classification is a difficult task due to the fact that all packets must be processed at wire speed and rulesets can contain tens of thousands of rules. The contribution of this paper is a hardware accelerator that can classify up to 433 million packets per second when using rulesets containing tens of thousands of rules with a peak power consumption of only 9.03 W when using a Stratix III field-programmable gate array (FPGA). The hardware accelerator uses a modified version of the HyperCuts packet classification algorithm, with a new pre-cutting process used to reduce the amount of memory needed to save the search structure for large rulesets so that it is small enough to fit in the on-chip memory of an FPGA. The modified algorithm also removes the need for floating point division to be performed when classifying a packet, allowing higher clock speeds and thus obtaining higher throughputs. © 1993-2012 IEEE.

O'Connor R.,Dublin University | Hughes G.,Dublin University | Kauerauf T.,IMEC | Ragnarsson L.-A.,IMEC
IEEE International Reliability Physics Symposium Proceedings | Year: 2010

In this work we present the time dependent dielectric breakdown (TDDB) characteristics of LaO capped HfO2 layers with an equivalent oxide thickness of 8Å. The layers show maximum operating voltages in excess of 1V. Such high reliability can be attributed to very high Weibull slopes. We examine the origin of the high slopes by a detailed study of the evolution of the stress induced leakage current with time, temperature and stress voltage. © 2010 IEEE.

Ismail I.,Dublin University | Mazlan S.A.,University of Technology Malaysia | Olabi A.G.,Dublin University
Advanced Materials Research | Year: 2010

In this study, a testing rig in squeeze was designed and developed with the ability to conduct various tests especially for quasi-static squeezing at different values of magnetic field strength. Finite Element Method Magnetics (FEMM) was utilized to simulate the magnetic field distribution and magnetic flux lines generation from electromagnetic coil to the testing rig. Tests were conducted with two types of MR fluid. MRF-132DG was used to obtain the behaviour of MR fluid, while synthesized epoxy-based MR fluid was used for investigating the magnetic field distribution with regards to particle chains arrangement. Simulation results of the rig design showed that the magnetic flux density was well distributed across the tested materials. Magnetic flux lines were aligned with force direction to perform squeeze tests. Preliminary experimental results showed that stress-strain pattern of MR fluids were in agreement with previous results. The epoxy-based MR samples produced excellent metallographic samples for carbonyl iron particles distributions and particle chain structures investigation. © (2010) Trans Tech Publications.

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