University of Greenwich

About: University of Greenwich is a education organization based out in London, United Kingdom. It is known for research contribution in the topics: Population & Context (language use). The organization has 3749 authors who have published 9958 publications receiving 234340 citations.

Design of an Image Processing Interface to Existing CFD Software Platforms

Abstract: Image processing has largely been done via MATLAB and other programming languages, such as JAVA and C, implementing those Partial Differential Equation (PDE) models for denoising, smoothing, segmentation and restoration. This involves significant effort in writing implementation coding and in designing robust algorithms for image processing activities. In order to avoid such repeated effort such as algorithmic development for numerical solutions of PDE, we propose to use existing software packages which provide very good platforms of PDE solvers. Two commercial software platforms, namely PHYSICA3G and ANSYS, are examined. The former one allows a better interaction to the background coding and the latter one does not allow flexible user interaction with the background. This paper describes the implementation of PDE image processing models on and the design of a user interface with two very different software platforms, taking the advantage of the existing PDE solvers within them. The design logic is discussed in the paper along with numerical experiments on a number of methods, including isotropic model and anisotropic model for denoising and smoothing. Several pictures are used in the numerical experiments and the resulting PSNR ratios are obtained and compared with other work in the literature.

What Is Intelligence? Beyond the Flynn Effect, by James R. Flynn

Abstract: Taylor and Francis LED_A_419590.sgm 10.1080/02601370903248579 International Journal of Lifelong Education 0260-1370 (pri t)/1464-519X (online) Book Reviews 2 09 & Francis 8 5 00September–October 2009 rba aMu hy b.murphy@bi hopg.a .uk What Is Intelligence? Beyond the Flynn Effect, by JAMES R. FLYNN (Cambridge University Press, Cambridge, UK, 2007), xi + 216 pp., £15.99 (hbk), ISBN 978-0-521-88007-7

Some Braces of Cardinality $p^{4}$ and Related Hopf-Galois Extensions

Abstract: We describe all $\mathbb F_{p}$-braces of cardinality $p^{4}$ which are not right nilpotent. Our solution illustrates a general way of investigating $\mathbb F_{p}$-braces of cardinality $p^{n}$ with a given multiplicative group. The constructed braces are left nilpotent, solvable and prime, and they also contain a non-zero strongly nilpotent ideal.

Micro-scale Modelling Challenges in Electric Field Assisted Capillarity

Abstract: Electric field Assisted Capillarity (EFAC) is a novel method for the fabrication of hollow microstructures in polymers. It involves both electrostatic and multiphase fluid dynamics modelling with special attention paid to surface tension due to the large capillary forces involved. This presents several challenges in the modelling, firstly due to the small scale involved (Domain sizes of 10-300 micron) and secondly due to the large electrostatic and dielectric forces involved in the process. In addition the small scale creates large curvatures resulting in modelling stability which can be difficult to handle numerically. This paper considers the phase field technique for modelling the free surface flows involved in the process and why the proposed micro-scale technique is numerically more stable than other commonly used level set techniques.