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Displaying Results 3001 - 3025 of 3231 on page 121 of 130
Marked
Mark
Managing diversity in practical ambient assisted living ecosystems
(2010)
O'Grady, Michael J.; Walsh, Michael; Tynan, Richard; Gurrin, Cathal; Dragone, Maur...
Managing diversity in practical ambient assisted living ecosystems
(2010)
O'Grady, Michael J.; Walsh, Michael; Tynan, Richard; Gurrin, Cathal; Dragone, Mauro; O'Hare, Gregory M.P.
Abstract:
Science Foundation Ireland (CSET - Centre for Science, Engineering and Technology, Grant No. 07/CE/11147)
Published Version
http://www.aaliance.eu/public/aaliance-conference-1
Though the motivation for developing Ambient Assisted Living (AAL) systems is incontestable, significant challenges exist in realizing the ambience that is essential to the success of such systems. By definition, an AAL system must be omnipresent, tracking occupant activities in the home and identifying those situations where assistance is needed or would be welcomed. Embedded sensors offer an attractive mechanism for realizing ambience as their form factor and harnessing of wireless technologies aid in their seamless integration into pre-existing environments. However, the heterogeneity of the end-user population, their disparate needs and the differing environments in which they inhabit, all pose particular problems regarding sensor integration and management
http://hdl.handle.net/10468/471
Marked
Mark
Vision Algorithms and Systems for Vehicle and Pedestrian Detection in Night Time Conditions Using Vehicle Mounted Cameras
(2011)
O'Malley, Ronan
Vision Algorithms and Systems for Vehicle and Pedestrian Detection in Night Time Conditions Using Vehicle Mounted Cameras
(2011)
O'Malley, Ronan
Abstract:
Statistics show that a disproportionate amount of road fatalities occur at night-time despite the greatly reduced volume of traffic on roads. This thesis describes a system aimed at addressing this issue by automatically detecting the two main categories of road users: other road vehicles and pedestrians. A vehicle detection system using a visible spectrum camera and a pedestrian detection system using an infrared camera are presented, followed by a fusion of these systems. An image processing system to detect and track vehicles using their lamps is presented. As the appearance of vehicle lamps in video can vary depending on camera hardware, a camera configuration process is implemented. To identify red tail- and brake-lamps, parameters for a red colour threshold are derived from automotive regulations. Higher intensity headlamps are identified by utilising a seeded region growing technique. To obtain vehicle location data from identified lamps, they are paired using bilateral sym...
http://hdl.handle.net/10379/2390
Marked
Mark
PROSET — A Language for Prototyping with Sets
(1992)
Doberkat, Emst-Erich; Franke, Wolfgang; Gutenbeil, Ulrich; Hasselbring, Wilhelm; Lammer...
PROSET — A Language for Prototyping with Sets
(1992)
Doberkat, Emst-Erich; Franke, Wolfgang; Gutenbeil, Ulrich; Hasselbring, Wilhelm; Lammers, Ulrich; Pahl, Claus
Abstract:
We discuss the prototyping language PROSET(Prototyping with Sets) as a language for experimental and evolutionary prototyping, focusing its attention on algorithm design. Some of PROSET’s features include generative communication, flexible exception handling and the integration of persistence. A discussion of some issues pertaining to the compiler and the programming environment conclude the paper
http://doras.dcu.ie/16533/
Marked
Mark
An overview of laser surface modification of die steels
(2008)
Aqida, S.N.; Naher, Sumsun; Maurel, M.; Brabazon, Dermot
An overview of laser surface modification of die steels
(2008)
Aqida, S.N.; Naher, Sumsun; Maurel, M.; Brabazon, Dermot
Abstract:
In recent years, surface modification using advanced heat source like laser has been replacing the conventional methods to produce amorphous microstructure via rapid solidification. Due to the benefits of laser to enhance the tribological and mechanical properties of materials’ surface, several laser surface processing were developed including laser surface modification, namely laser alloying, transformation hardening, surface amorphization, shock hardening and glazing. In high temperature applications, the laser surface modification technique is beneficial to prolong the die life cycle, and also to improve the surface roughness of thermal barrier coatings (TBC). To produce the amorphous layer at a particular depth, laser parameter such as irradiance, frequency, and exposure time are controlled. Variations of parameter may result in modified microhardness properties of heat affected zone and transition zone. Nevertheless, works on laser glazing of bearings, railroad rails and TBC ha...
http://doras.dcu.ie/16679/
Marked
Mark
Mechanical Engineering: Prospectus of Courses Session 1938-39
(1938)
City of Dublin Vocational Education Committee
Mechanical Engineering: Prospectus of Courses Session 1938-39
(1938)
City of Dublin Vocational Education Committee
Abstract:
<p>Courses and timetables for the College of Technology, Bolton Street, Dublin 1.</p>
http://arrow.dit.ie/prosbt/99
Marked
Mark
Mechanical Engineering: Prospectus of Courses 1928-29
(1928)
City of Dublin Vocational Education Committee
Mechanical Engineering: Prospectus of Courses 1928-29
(1928)
City of Dublin Vocational Education Committee
Abstract:
<p>Courses and timetables for the College of Technology, Bolton Street, Dublin 1.</p>
http://arrow.dit.ie/prosbt/101
Marked
Mark
Layered Ontological Modelling for Web Service-oriented Model-Driven Architecture
(2005)
Pahl, Claus
Layered Ontological Modelling for Web Service-oriented Model-Driven Architecture
(2005)
Pahl, Claus
Abstract:
Modelling is recognised as an essential activity in the architectural design of software systems. Model-driven architecture (MDA) is a framework implementing this idea. Ontologies are knowledge representation frameworks that are ideally suited to support modelling in this endeavour. We propose here a layered ontological framework that addresses domain modelling, architectural modelling, and interoperability aspects in the development of service-based software systems. We illustrate the benefits of ontological modelling and reasoning for service-oriented software architectures within the context of the Web Services.
http://doras.dcu.ie/16534/
Marked
Mark
Accelerated source-sweep analysis using a reduced-order model approach
(2011)
Bradley, Patrick; Brennan, Conor; Condon, Marissa; Mullen, Marie
Accelerated source-sweep analysis using a reduced-order model approach
(2011)
Bradley, Patrick; Brennan, Conor; Condon, Marissa; Mullen, Marie
Abstract:
This paper is concerned with the development of a model-order reduction (MOR) approach for the acceleration of a source-sweep analysis using the volume electric field integral equation (EFIE) formulation. In particular, we address the prohibitive computational burden associated with the repeated solution of the two-dimensional electromagnetic wave scattering problem for source-sweep analysis. The method described within is a variant of the Krylov subspace approach to MOR, that captures at an early stage of the iteration the essential features of the original system. As such these approaches are capable of creating very accurate low-order models. Numerical examples are provided that demonstrate the speed-up achieved by utilising these MOR approaches when compared against a method of moments (MoM) solution accelerated by use of the Fast Fourier Transform (FFT).
http://doras.dcu.ie/16708/
Marked
Mark
Where agile research goes: starting from a 7-year retrospective (report on agile research workshop at XP2009
(2011)
Wang, Xiaofeng; Lane, Michael; Conboy, Kieran; Pikkarainen, Minna
Where agile research goes: starting from a 7-year retrospective (report on agile research workshop at XP2009
(2011)
Wang, Xiaofeng; Lane, Michael; Conboy, Kieran; Pikkarainen, Minna
Abstract:
This report summarizes the key findings from a workshop at the 10th International Conference on Agile Processes and eXtreme Programming in Software Engineering (XP2009) called “Agile Research – A 7-Year Retrospective”, held in Sardinia in May 2009. The workshop was based on an open discussion around past papers presented at the conference, identifying current gaps and areas for future research. A research topic map has been drawn and several future research directions have been highlighted as the results of running the workshop.
SFI
http://hdl.handle.net/10344/1700
Marked
Mark
Software practitioners dropping-out: a research proposal
(2011)
Downey, Jack
Software practitioners dropping-out: a research proposal
(2011)
Downey, Jack
Abstract:
This paper proposes an exploratory study to determine why some computer science or software engineering graduates abandon their careers in software to pursue radically different paths. While these people may be experiencing a generic mid-life crisis, is it possible that the tremendous technical focus of their work means they are ill-prepared for the senior roles on offer, roles that involve interpersonal as opposed to technical skills?
SFI
http://hdl.handle.net/10344/1704
Marked
Mark
DC/DC converter 3D assembly for autonomous sensor nodes
(2010)
Hilt, Thierry; Boutry, Herve; Franiatte, Remi; Rothan, Frederic; Sillon, Nicolas; Stam,...
DC/DC converter 3D assembly for autonomous sensor nodes
(2010)
Hilt, Thierry; Boutry, Herve; Franiatte, Remi; Rothan, Frederic; Sillon, Nicolas; Stam, Frank; Mathewson, Alan; Wang, Ningning; Ó Mathúna, S. Cian; Rodgers, Kenneth
Abstract:
Science Foundation Ireland (CSET - Centre for Science, Engineering and Technology); European Commission (IST-026461)
Accepted Version
This paper reports on the design and the manufacturing of an integrated DCDC converter, which respects the specificity of sensor node network: compactness, high efficiency in acquisition and transmission modes, and compatibility with miniature Lithium batteries. A novel integrated circuit (ASIC) has been designed and manufactured to provide regulated Voltage to the sensor node from miniaturized, thin film Lithium batteries. Then, a 3D integration technique has been used to integrate this ASIC in a 3 layers stack with high efficiency passives components, mixing the wafer level technologies from two different research institutions. Electrical results have demonstrated the feasibility of this integrated system and experiments have shown significant improvements in the case of oscillations in regulated voltage. However, stability of this output vo...
http://hdl.handle.net/10468/474
Marked
Mark
Integration of UPQC for Power Quality Improvement in Distributed Generation Network – A Review
(2011)
Khadem, Md Shafiuzzaman Khan, Mr; Basu, Malabika; Conlon, Michael
Integration of UPQC for Power Quality Improvement in Distributed Generation Network – A Review
(2011)
Khadem, Md Shafiuzzaman Khan, Mr; Basu, Malabika; Conlon, Michael
Abstract:
<p>In this paper a technical review of the integration of a Unified Power Quality Conditioner (UPQC) in a distributed generation network is presented. Although the primary task of UPQC is to minimize grid voltage and load current disturbances along with reactive and harmonic power compensation, additional functionalities such as compensation of voltage interruption and active power transfer to the load and grid have also been identified. Connection methodologies with their advantages and disadvantages are also described. Recent improvements in capacity expansion techniques and future trends for the application of UPQC in distributed modes are also identified.</p>
http://arrow.dit.ie/engscheleart2/42
Marked
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Service fusion in mobile contexts
(2010)
Shen, J. M.; O'Grady, Michael J.; O'Hare, G. M. P. (Greg M. P.)
Service fusion in mobile contexts
(2010)
Shen, J. M.; O'Grady, Michael J.; O'Hare, G. M. P. (Greg M. P.)
Abstract:
Service provision for mobile users poses several challenges for those managing enterprise information systems. Some of these are ubiquitous, for example, privacy and security. Others give rise to integration and interoperability issues. The agent paradigm, though offering potential in fixed networked scenarios, has not been seriously considered as a mechanism for incorporating mobile clients, primarily to their computational intractability on mobile devices. However, recent developments in agent and mobile computing technologies – both from a hardware and software perspective, have rendered the mobile phone a viable platform for agents. One implication of this is that agents now offer a viable platform for service delivery to mobile users. This chapter reflects on some of the pertinent issues necessary for this, including Agent Oriented Software Engineering (AOSE). The discussion is illuminated with a systematic description of EasyLife – a framework that harnesses the agent paradigm...
http://hdl.handle.net/10197/2795
Marked
Mark
Process support for product line application engineering.
(2011)
O'Leary, Padraig; Richardson, Ita
Process support for product line application engineering.
(2011)
O'Leary, Padraig; Richardson, Ita
Abstract:
The derivation of products from a software product line is a time-consuming and expensive activity. Despite recognition that an effective process could alleviate many of the difficulties associated with product derivation, existing approaches have different scope, emphasize different aspects of the derivation process and are frequently too specialized to serve as a general solution. In response to a need for methodological support, we developed Pro-PD (Process model for Product Derivation). Pro-PD was iteratively developed and evaluated through four research stages involving academic and industrial sources. This paper illustrates how Pro-PD provides systematic support by using product derivation preparation as an example.
IRCSET grant RS/06/167
SFI 03/CE2/13031
http://hdl.handle.net/10344/1714
Marked
Mark
Cell Proliferation Tracking Using Graphene Sensor Arrays
(2012)
HEGNER, MARTIN; DUESBERG, GEORG STEFAN
Cell Proliferation Tracking Using Graphene Sensor Arrays
(2012)
HEGNER, MARTIN; DUESBERG, GEORG STEFAN
Abstract:
The development of a novel label-free graphene sensor array is presented. Detection is based on modification of graphene FET devices and specifically monitoring the change in composition of the nutritive components in culturing medium. Micro-dispensing of Escherichia coli in medium shows feasibility of accurate positioning over each sensor while still allowing cell proliferation. Graphene FET device fabrication, sample dosing, and initial electrical characterisation have been completed and show a promising approach to reducing the sample size and lead time for diagnostic and drug development protocols through a label-free and reusable sensor array fabricated with standard and scalable microfabrication technologies.
http://hdl.handle.net/2262/61289
Marked
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Standalone software as an active medical device
(2011)
Mc Hugh, Martin; Mc Caffery, Martin; Casey, Valentine
Standalone software as an active medical device
(2011)
Mc Hugh, Martin; Mc Caffery, Martin; Casey, Valentine
Abstract:
With the release of the latest European Medical Device Directive (MDD) standalone software can now be classified as an active medical device. Consequently the methods used to ensure device safety and reliability needs to be reviewed. IEC 62304 is the current software development lifecycle framework followed by medical device software developers but important processes are beyond the scope of IEC 62304. These processes are covered by additional standards. However since the MDD became mandatory these additional standards are not comprehensive enough to ensure the reliability of an active medical device consisting of only software. By employing software process improvement techniques this software can be developed and validated to ensure it performs the required task in a safe and reliable way.
SFI Stokes lectureship programme grant 07/SK11299
SFI Principal investigator programame grant 08/IN.1/12030
Irish software engineering centre grant 03/CE2/1303_1
http://hdl.handle.net/10344/1717
Marked
Mark
Requirements evolution: from assumptions to reality
(2011)
Ali, Raian; Dalpiaz, Fabiano; Giorgini, Paolo; Souza, Victor E
Requirements evolution: from assumptions to reality
(2011)
Ali, Raian; Dalpiaz, Fabiano; Giorgini, Paolo; Souza, Victor E
Abstract:
Requirements evolution is a main driver for systems evolution. Traditionally, requirements evolution is associated to changes in the users’ needs and environments. In this paper, we explore another cause for requirements evolu- tion: assumptions. Requirements engineers often make assumptions stating, for example, that satisfying certain sub-requirements and/or correctly executing cer- tain system functionalities would lead to reach a certain requirement. However, assumptions might be, or eventually become, invalid. We outline an approach to monitor, at runtime, the assumptions in a requirements model and to evolve the model to reflect the validity level of such assumptions. We introduce two types of requirements evolution: autonomic (which evolves the priorities of system al- ternatives based on their success/failure in meeting requirements) and designer- supported (which detects loci in the requirements model containing invalid as- sumptions and recommends designers to take evoluti...
http://hdl.handle.net/10344/1739
Marked
Mark
OpenArgue: supporting argumentation to evolve secure software systems
(2012)
Yu, Yijun; Tun, Thein Than; Tedeschi, Alessandra; Nuseibeh, Bashar
OpenArgue: supporting argumentation to evolve secure software systems
(2012)
Yu, Yijun; Tun, Thein Than; Tedeschi, Alessandra; Nuseibeh, Bashar
Abstract:
When software systems are verified against security requirements, formal and informal arguments provide a structure for organizing the software artifacts. Our recent work on the evolution of security-critical software systems demonstrates that our argumentation technique is useful in limiting the scope of change and in identifying changes to security properties. In support of this work, we have developed OpenArgue, a tool for syntax checking, visualizing, formalizing, and reasoning about incremental arguments. OpenArgue has been integrated with requirements engineering tools for Problem Frames and i*, and applied to an Air Traffic Management (ATM) case study.
SFI grant 03/CE2/I303_1
http://hdl.handle.net/10344/1767
Marked
Mark
Air-tightness field data for dwellings in Ireland
(2012)
DYER, MARK
Air-tightness field data for dwellings in Ireland
(2012)
DYER, MARK
Abstract:
Air-tightness plays a major role in both building energy performance and indoor environmental quality. Ireland's National Methodology for the calculation of energy performance of buildings, the Building Energy Rating (BER) includes air permeability characteristics. From an international perspective, many air permeability surveys have been carried out. However, there is a paucity of knowledge relating to the existing housing stock in Ireland. This paper reports the air permeability test results of 28 houses built between 1944 to 2008 and at varying stages of retrofit. The results are compared to past studies and compliance with the existing standards. The effect of construction type, age, design details and retrofitting on air permeability is examined. While statistically small the dwellings are broadly representative of the many that will be retrofitted over the coming years. This paper addresses the lack of practical research in air-tightness for new and retrofitted dwellings...
http://hdl.handle.net/2262/61487
Marked
Mark
A Systematic Literature review on fault prediction performance in software engineering
(2012)
Hall, Tracy; Beecham, Sarah; Bowes, David; Gray, David; Counsell, Steven
A Systematic Literature review on fault prediction performance in software engineering
(2012)
Hall, Tracy; Beecham, Sarah; Bowes, David; Gray, David; Counsell, Steven
Abstract:
Background: The accurate prediction of where faults are likely to occur in code can help direct test effort, reduce costs and improve the quality of software. Objective: We investigate how the context of models, the independent variables used and the modelling techniques applied, influence the performance of fault prediction models. Method:We used a systematic literature review to identify 208 fault prediction studies published from January 2000 to December 2010. We synthesise the quantitative and qualitative results of 36 studies which report sufficient contextual and methodological information according to the criteria we develop and apply. Results: The models that perform well tend to be based on simple modelling techniques such as Naïve Bayes or Logistic Regression. Combinations of independent variables have been used by models that perform well. Feature selection has been applied to these combinations when models are performing particularly well. Conclusion: The methodology use...
http://hdl.handle.net/10344/1772
Marked
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Assessment of Inactivating Stop Codon Mutations in Forty Saccharomyces cerevisiae Strains: Implications for [PSI] Prion- Mediated Phenotypes.
(2011)
MORRIS, DEREK; CORMICAN, PAUL; KENNY, ELAINE
Assessment of Inactivating Stop Codon Mutations in Forty Saccharomyces cerevisiae Strains: Implications for [PSI] Prion- Mediated Phenotypes.
(2011)
MORRIS, DEREK; CORMICAN, PAUL; KENNY, ELAINE
Abstract:
The yeast prion [PSI+] has been implicated in the generation of novel phenotypes by a mechanism involving a reduction in translation fidelity causing readthrough of naturally occurring stop codons. Some [PSI+] associated phenotypes may also be generated due to readthrough of inactivating stop codon mutations (ISCMs). Using next generation sequencing we have sequenced the genomes of two Saccharomyces cerevisiae strains that are commonly used for the study of the yeast [PSI+] prion. We have identified approximately 26,000 and 6,500 single nucleotide polymorphisms (SNPs) in strains 74-D694 and G600 respectively, compared to reference strain S288C. In addition to SNPs that produce non-synonymous amino acid changes we have also identified a number of SNPs that cause potential ISCMs in these strains, one of which we show is associated with a [PSI+]-dependent stress resistance phenotype in strain G600. We identified twenty-two potential ISCMs in strain 74-D694, present in genes involved in...
http://hdl.handle.net/2262/61496
Marked
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The meaning of success for software SMEs: An holistic scorecard based approach
(2011)
Clarke, Paul; O'Connor, Rory
The meaning of success for software SMEs: An holistic scorecard based approach
(2011)
Clarke, Paul; O'Connor, Rory
Abstract:
Software processes support the work of software development and software process improvement (SPI) is concerned with improving the operation of the software process. One of the primary reasons for conducting SPI is to increase the success of a software development company [1], [2]. However, a lack of evidence of the benefits of SPI is reported as a de-motivator for project/senior managers [3]. Therefore, the case for SPI would benefit from evidence of the positive impact of SPI on business success. This paper proposes a new approach that utilises the Holistic Scorecard (HSC) [4] to systematically examine business success in software development companies. Furthermore, we relate the experience of applying this new approach to software small to medium sized enterprises (SMEs).
http://doras.dcu.ie/16724/
Marked
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A study of software development team dynamics in SPI
(2011)
Basri, Shuib; O'Connor, Rory
A study of software development team dynamics in SPI
(2011)
Basri, Shuib; O'Connor, Rory
Abstract:
The software development team is a key factor in software projects, however, achieving and maintaining positive team dynamics in software development project especially when the software companies have fewer resources in term of people, money and time is a remarkable challenge. This paper explores the dynamics of software development teams (structure, process, communication, learning and sharing) and its impact on Software Process Improvement (SPI) in very small software organization, in order to understand the impact between these two variables. We undertook a series of interviews and focus groups with very small software companies and our results show that very small companies have a high level of team dynamics although their SPI initiatives are conducted on a small scale and in an informal and indirect manner. The results also indicated that this situation occurs due to the working and social relationship, willingness to share, having a good interpersonal skill and work closely e...
http://doras.dcu.ie/16725/
Marked
Mark
An empirical investigation into social productivity of a software process: An approach by using the structural equation modeling
(2011)
Yilmaz, Murat; O'Connor, Rory
An empirical investigation into social productivity of a software process: An approach by using the structural equation modeling
(2011)
Yilmaz, Murat; O'Connor, Rory
Abstract:
The actual and expected benefits of fostering the alignment of people factors and cooperation among software development teams enables software development organization to improve software development productivity. Furthermore, software development productivity presents a significant challenge for both understanding and quantifying the performance characteristics of software development organizations. This paper introduces an approach to model software development productivity by using structural equation modeling (SEM), a technique that can be used for testing and estimating relationships using empirical data. We also present preliminary results from an exploratory study about the enabling social factors that affect software development productivity. Our quantitative analysis involves grouping productivity and social productivity factors for studying and identifying their implicit relationship. To this end, we issue questionnaires to test our hypothesis and to gather sample data. T...
http://doras.dcu.ie/16726/
Marked
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Using grounded theory to understand software process improvement: A study of Irish software product companies
(2007)
Coleman, Gerry; O'Connor, Rory
Using grounded theory to understand software process improvement: A study of Irish software product companies
(2007)
Coleman, Gerry; O'Connor, Rory
Abstract:
Software Process Improvement (SPI) aims to understand the software process as it is used within an organisation and thus drive the implementation of changes to that process to achieve specific goals such as increasing development speed, achieving higher product quality or reducing costs. Accordingly, SPI researchers must be equipped with the methodologies and tools to enable them to look within organisations and understand the state of practice with respect to software process and process improvement initiatives, in addition to investigating the relevant literature. Having examined a number of potentially suitable research methodologies, we have chosen Grounded Theory as a suitable approach to determine what was happening in actual practice in relation to software process and SPI, using the indigenous Irish software product industry as a test-bed. The outcome of this study is a theory, grounded in the field data, that explains when and why SPI is undertaken by the software industry....
http://doras.dcu.ie/16736/
Displaying Results 3001 - 3025 of 3231 on page 121 of 130
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