Computer Science: Recent submissions

Now showing items 1721-1740 of 2149

    • Analysis of visibility masks and resultant image quality 

      TALBOT, LEO; O'SULLIVAN, CAROL ANN (2000)
      Virtual Interfaces and Visibility Masks are an extremely efficient method for parallelising the Radiosity Method. They exploit data locality, and keep communication between nodes as low as possible. Previous papers on ...

    • Signal space based adaptive modulation for software radio 

      DOYLE, LINDA; O'MAHONY, DONAL EDWARD (IEEE, 2002)
      This paper describes an automatic modulation scheme recognition technique. The technique is designed for a real-time software radio using general purpose processors and is based on modified pattern recognition and ...

    • Real-time payments for mobile IP 

      O'Mahony, Donal; Tewari, Hitesh (2003)
      The Mobile IP protocol has evolved from providing mobility support for portable computers to support for wireless handheld devices with high mobility patterns. A new category of micromobility protocols has been proposed ...

    • Shared RSA key generation in an mobile ad hoc network 

      DOYLE, LINDA; O'MAHONY, DONAL EDWARD (IEEE, 2003)
      The use of a threshold certificate authority to provide cryptographic key management in mobile ad hoc networks has been suggested in the literature. We have designed and implemented such a key management service for our ...

    • Flexible real-time payment methods for mobile communications 

      O'MAHONY, DONAL EDWARD (IEEE, 2000)
      The method of billing users for mobile telephony is based on systems developed over time for fixed networks. We survey the technology involved, and argue that these systems will become increasingly inadequate for large ...

    • UMTS: the fusion of fixed and mobile networking 

      O'MAHONY, DONAL EDWARD (IEEE, 1998)
      The Universal Mobile Telecommunications System (UMTS) represents the emerging European standard for next generation cellular systems that transmit data as well as voice on a global basis. The UMTS goals involve the integration ...

    • Secure pay-per-view testbed 

      O'MAHONY, DONAL EDWARD (IEEE, 1995)
      Trials of video on demand and pay-per-view systems are underway in many countries, and as a result, many cable and telecommunications companies are having to upgrade or replace their distribution networks. Video streams ...

    • EuroBridge methodology for telecommunications service specification 

      O'MAHONY, DONAL EDWARD (IEEE, 1993)
      In designing and specifying a system that will be used to provide telecommunications services to a user population, it is important to identify all major actors involved, and their individual concerns at an early ...

    • ALOHA: Adaptive Level of Detail for Human Animation: Towards and new Framework. 

      GIANG, THANH; MOONEY, ROBERT; PETERS, CHRISTOPHER; O'SULLIVAN, CAROL ANN (2000)
      The task of animating and rendering virtual humans in real-time is challenging. One must first establish a sense of realism through appearance, and then maintain this realism through correct and plausible motion, while ...

    • Animating cuts with on-the-fly re-meshing 

      GANOVELLI, FABIO; O'SULLIVAN, CAROL ANN (2001)
      The problem of defining a model for deformable objects which allows the user to perform cuts is still open. Generally speaking, the reason is that such a task affects the connectivity and the topology of the mesh, while the ...

    • Extracting geometric models from medieval moundling profiles for case-based reasoning 

      BRADSHAW, GARETH; O'SULLIVAN, CAROL ANN (2000)
      Cross-sectional profiles of medieval mouldings are often considered to be a vital form of data for art historians. Mouldings have often been used to highlight salient areas of buildings, and they provide a wealth of ...

    • Real-time implicit bulging and area preservation 

      LINDEN, NIALL; REYNOLDS, HUGH; O'SULLIVAN, CAROL ANN (2000)
      Implicit Surfaces are particularly suitable for the animation of deformable objects, although some problems still remain, especially in real time applications. One problem is that of volume loss when objects are squashed. ...

    • EFFIGI: An Efficient Framework for Implementing Global Illumination. 

      LEESON, WILLIAM; COLLINS, STEVEN; O'SULLIVAN, CAROL ANN (2000)
      This paper presents a rendering framework called EFFIGI (Efficient Framework For Implementing Global Illumination) that uses interfaces which express both geometric concepts and mathematical ones, using object-oriented and ...

    • New metrics for evaluation of collision detection techniques 

      LEVEY, EVIN; PETERS, CHRISTOPHER; O'SULLIVAN, CAROL ANN (2000)
      In this paper we describe new metrics for the evaluation of collision detection techniques. Through careful study of common applications of these techniques we have developed a series of comparative tests that should ...

    • Collisions and perception 

      O'SULLIVAN, CAROL ANN; DINGLIANA, JOHN (ACM, 2001)
      Level of Detail (LOD) techniques for real-time rendering and related perceptual issues have received a lot of attention in recent years. Researchers have also begun to look at the issue of perceptually adaptive techniques ...

    • Collisions and adaptive levels of detail 

      DINGLIANA, JOHN; O'SULLIVAN, CAROL ANN (ACM Press, 2001)

    • Real vs. approximate collisions: when can we tell the difference 

      DINGLIANA, JOHN; O'SULLIVAN, CAROL ANN (ACM Press, 2001)

    • Towards requirements for the dynamic sourcing of Open Corpus Learning Content 

      LAWLESS, SEAMUS SEAN TOMAS; DAGGER, DECLAN; WADE, VINCENT PATRICK (2006)
      The dynamic sourcing of Open Corpus Learning Content is a complex and resource intensive process. However, modern technologies and methods can facilitate an efficient content identification and acquisition process. Several ...

    • Exclusivity, Externalities & Easements: Dynamic Spectrum Access and Coasean Bargaining 

      FORDE, TIM; DOYLE, LINDA; FORDE, TIM (IEEE, 2007)
      This paper explores the possibility of realising Coasean bargains to remove the presence of externalities in a libertarian system of exclusive spectrum rights through the creation of various economically motivated easements. ...

    • On the use of CBR in optimisation problems such as the TSP 

      Cunningham, Padraig; Smyth, Barry; Hurley, Neil (Trinity College Dublin, Department of Computer Science, 1995-06)
      The particular strength of CBR is normally considered to be its use in weak theory domains where solution quality is compiled into cases and is reusable. In this paper we explore an alternative use of CBR in optimisati ...