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Browsing Mathematics & Statistics by Title

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  • MacKenzie, Gilbert (IWSM, 2004)
    Conventionally, in longitudinal studies, the mean structure has been thought to be more important than the covariance structure between the repeated measures on the same individual. Often, it has been argued that, with ...
  • Lynch, Joseph; MacKenzie, Gilbert (IWSM, 2007)
    Kaplan-Meier analysis of a large breast cancer dataset is carried out under all-cause and cause-specific survival. The results are compared with a variety of model-based analyses, including Cox's Proportional Hazard ...
  • Faulkner, Fiona (University of Limerick, 2012)
    Declining standards in students’ mathematical competency levels has become a major issue in mathematics education both nationally and internationally (Smith 2004; Kajander and Lovric 2005; Gill et al 2010). This decline ...
  • Gleeson, James P.; Melnik, Sergey (American Physical Society, 2009)
    An analytical approach to calculating bond percolation thresholds, sizes of k-cores, and sizes of giant connected components on structured random networks with nonzero clustering is presented. The networks are generated ...
  • Karpinski, Pawel; Szmida, Elzbieta; Misiak, Blazej; Ramsey, David; Leszczynski, Przemyslaw; Bebenek, Marek; Sedziak, Tomasz; Grzebieniak, Zygmunt; Jonkisz, Anna; Lebioda, Arleta; Sasiadek, Maria Malgorzata (Wiley, 2012)
    Background: Recent investigations have demonstrated the clear heterogeneity of sporadic colorectal cancer (CRC) with regard to CpG island methylation. Two unsupervised cluster analyses revealed that CRCs form three distinct ...
  • Gleeson, James P. (American Physical Society, 2009)
    Analytical results are derived for the bond percolation threshold and the size of the giant connected component in a class of random networks with nonzero clustering. The network's degree distribution and clustering spectrum ...
  • Devereux, Michael (University of Limerick, 2011)
    Foam and bubbles are ubiquitous in industry and nature. They have a wide range of applications but are also an undesirable product of certain processes. This thesis considers two individual industrial problems with the ...
  • Gil, Justyna; Ramsey, David; Stembalska, Agnieszka; Karpinski, Pawel; Pesz, Karolina A; Laczmanska, Izabela; Leszczynski, Przemyslaw; Grzebieniak, Zygmunt; Sasiadek, Maria Malgorzata (Springer-Verlag, 2012)
    Background: Epidemiological data show that colorectal cancer (CRC) is the second most frequent malignancy worldwide. The involvement of “minor impact genes” such as XME and DNA-repair genes in the etiology of sporadic ...
  • Hackett, Adam W. (University of Limerick, 2011)
    The network topologies on which many natural and synthetic systems are built provide ideal settings for the emergence of complex phenomena. One well-studied manifestation of this, called a cascade or avalanche, is observed ...
  • Templeton, John L; Spence, R.A.J.; Kennedy, T.L.; Parks, T.G.; MacKenzie, Gilbert; Hanna, W.A (BMJ Group, 1983)
    One hundred and thirty seven previously untreated outpatients with first and second degree haemorrhoids were allocated at random to treatment by infrared coagulation (n=66) or rubber band ligation (n= 71). Complete ...
  • Blagojevic, Milica; MacKenzie, Gilbert; Do Ha, II (IWSM, 2003)
    The non-PH Canonical Time Dependent Logistic survival regression model described by MacKenzie (1996, 2002), is extended by incorporating a multiplicative Gamma frailty component into the hazard function. The resulting model ...
  • Karpinski, Pawel; Ramsey, David; Grzebieniak, Zygmunt; Sasiadek, Maria Malgorzata; Blin, Nikolaus (American Association for Cancer Research, 2008)
  • Blagojevic, Milica; MacKenzie, Gilbert (IWSM, 2007)
    The non-PH Canonical Time Dependent Logistic (CTDL) survival re- gression model is extended by incorporating a positive stable frailty component into the hazard function within the Bayesian framework. The resulting model ...
  • Karpinski, Pawel; Myszka, Aleksander; Ramsey, David; Kielan, Wojciech; Sasiadek, Maria Malgorzata (Springer-Verlag, 2011)
    There is evidence that insertion of viral DNA into a mammalian genome can lead to alterations of methylation patterns. The aim of the present study was to examine the presence of DNA sequences of five human DNA viruses ...
  • Alessandrini, Giovanni; Gaburro, Romina (Society for Industrial and Applied Mathematics, 2001)
    We prove results of uniqueness and stability at the boundary for the inverse problem of electrical impedance tomography in the presence of possibly anisotropic conduct.ivities. We assume that the unknown conductivity has ...
  • Gaburro, Romina; Lionheart, William R. B. (2010)
    The problem in Optical Tomography of determining the spacially dependent absorption coefficient in an anisotropic medium with a-priori known strong scattering is considered. The problem is modelled by the diffusion ...
  • O'Brien, Michael Anthony (University of Limerick, 2011)
    In the field of geophysics, it has long been accepted that the bodies of igneous rock, known as intrusions, that are often found at shallow levels of the Earth’s continental crust are a result of the solidification of ...
  • Khoury, Maria; Gleeson, James P.; Sancho, J. M.; Lacasta, A. M.; Lindenberg, Katja (American Physical Society, 2009)
    Transport and diffusion of particles on modulated surfaces is a nonequilibrium problem which is receiving a great deal of attention due to its technological applications, but analytical calculations are scarce. In earlier ...
  • Nolan, Clifford J.; Cheney, Margaret; Dowling, Thomas; Gaburro, Romina (Institute of Physics Publishing, 2006)
    Multiply scattered waves are often neglected in imaging methods; largely because of the inability of popular algorithms to deal with the associated nonlinear models. This paper shows that by incorporating a known environment ...
  • Gaburro, Romina; Nolan, Clifford J. (American Institute of Mathematical Sciences, 2008)
    Many imaging methods involve probing a material with a wave and observing the back-scattered wave. The back-scattered wave measurements are used to compute an image of the internal structure of the material. Many of the ...

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