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Outputs (14)

Wideband indoor frequency agile channel sounder and measurements (2005)
Journal Article
Salous, S., & Hinostroza, V. (2005). Wideband indoor frequency agile channel sounder and measurements. IEE proceedings. Microwaves, antennas and propagation, 152(6), 573-580. https://doi.org/10.1049/ip-map%3A20041203

The architecture of a 300 MHz frequency agile channel sounder, its performance and RMS delay spread of measurements at 2.11 GHz is presented in indoor environments, which include different types of rooms, line-of-sight corridor measurements at differ... Read More about Wideband indoor frequency agile channel sounder and measurements.

Parallel receiver channel sounder for spatial and MIMO characterisation of the mobile radio channel (2005)
Journal Article
Salous, S., Filippidis, P., Lewenz, R., Hawkins, I., Razavi-Ghods, N., & Abdallah, M. (2005). Parallel receiver channel sounder for spatial and MIMO characterisation of the mobile radio channel. IEE proceedings. Communications, 152(6), 912-918. https://doi.org/10.1049/ip-com%3A20045346

The paper briefly compares the architecture of commonly used channel sounders for single input multiple output (SIMO) and multiple input multiple output (MIMO) applications. The architecture of a novel dual UMTS band parallel receiver sounder develop... Read More about Parallel receiver channel sounder for spatial and MIMO characterisation of the mobile radio channel.

Level sets of functions and symmetry sets of surface sections (2005)
Presentation / Conference Contribution
Diatta, A., Giblin, P., Guilfoyle, B., & Klingenberg, W. (2005, October). Level sets of functions and symmetry sets of surface sections. Presented at Mathematics of Surfaces XI: 11th IMA international conference, Loughborough

We prove that the level sets of a real C s function of two variables near a non-degenerate critical point are of class C [s/2] and apply this to the study of planar sections of surfaces close to the singular section by the tangent plane at an ellipti... Read More about Level sets of functions and symmetry sets of surface sections.

Approximate counting and quantum computation (2005)
Journal Article
Bordewich, M., Freedman, M., Lovasz, L., & Welsh, D. (2005). Approximate counting and quantum computation. Combinatorics, Probability and Computing, 14(5-6), 737-754. https://doi.org/10.1017/s0963548305007005

Motivated by the result that an `approximate' evaluation of the Jones polynomial of a braid at a $5^{th}$ root of unity can be used to simulate the quantum part of any algorithm in the quantum complexity class BQP, and results relating BQP to the cou... Read More about Approximate counting and quantum computation.

Identifying phylogenetic trees (2005)
Journal Article
Bordewich, M., Huber, K., & Semple, C. (2005). Identifying phylogenetic trees. Discrete Mathematics, 300(1-3), 30-43. https://doi.org/10.1016/j.disc.2005.06.015

A central problem that arises in evolutionary biology is that of displaying partitions of subsets of a finite set X on a tree whose vertices are partially labelled with the elements of X. Such a tree is called an X-tree and, for a collection C of par... Read More about Identifying phylogenetic trees.

The Casimir effect between non-parallel plates by geometric optics (2005)
Journal Article
Guilfoyle, B., Klingenberg, W., & Sen, S. (2005). The Casimir effect between non-parallel plates by geometric optics. Reviews in Mathematical Physics, 17(8), 859 - 880. https://doi.org/10.1142/s0129055x05002431

The first two authors have developed a technique which uses the complex geometry of the space of oriented affine lines in ℝ3 to describe the reflection of rays off a surface. This can be viewed as a parametric approach to geometric optics which has m... Read More about The Casimir effect between non-parallel plates by geometric optics.

Path coupling using stopping times (2005)
Presentation / Conference Contribution
Bordewich, M., Dyer, M., & Karpinski, M. (2005, August). Path coupling using stopping times. Presented at 15th International Symposium Fundamentals of Computation Theory : FCT 2005., Lubeck, Germany

We analyse the mixing time of Markov chains using path coupling with stopping times. We apply this approach to two hypergraph problems. We show that the Glauber dynamics for independent sets in a hypergraph mixes rapidly as long as the maximum degree... Read More about Path coupling using stopping times.

Nonplanar photolithography with computer-generated holograms (2005)
Journal Article
Maiden, A., McWilliam, R., Purvis, A., Johnson, S., Williams, G., Seed, N., & Ivey, P. (2005). Nonplanar photolithography with computer-generated holograms. Optics Letters, 30(11), 1300-1302. https://doi.org/10.1364/ol.30.001300

We outline a method for accomplishing photolithography on grossly nonplanar substrates. First we compute an approximation of the diffraction pattern that will produce the desired light-intensity distribution on the substrate to be patterned. This pat... Read More about Nonplanar photolithography with computer-generated holograms.

Photolithography on grossly non-planar substrates (2005)
Presentation / Conference Contribution
Williams, G., McWilliam, R., Maiden, A., Purvis, A., Ivey, P., & Seed, N. (2005, June). Photolithography on grossly non-planar substrates. Presented at Proceedings of 7th IEEE CPMT Conference on High Density Microsystem Design, Packaging and Failure Analysis., Shanghai, China

Within the electronics industry, photolithography is the primary technique by which patterns are transferred from mask to substrate. The substrates are either semiconductor wafers or printed circuit boards, both of which are nominally flat. The growt... Read More about Photolithography on grossly non-planar substrates.

Non-Planar Interconnect (2005)
Journal Article
Williams, G., Seed, N., Purvis, A., Maiden, A., McWilliam, R., Ivey, P., & Johnson, S. (2005). Non-Planar Interconnect. Circuit World, 31(2), 10-14. https://doi.org/10.1108/03056120510571798

Purpose – This paper describes a method for patterning fine line interconnections over non-planar surfaces and introduces the idea of using holographic masks for more challenging geometries. Design/methodology/approach – A photolithographic method fo... Read More about Non-Planar Interconnect.

On the computational complexity of the rooted subtree prune and regraft distance (2005)
Journal Article
Bordewich, M., & Semple, C. (2005). On the computational complexity of the rooted subtree prune and regraft distance. Annals of Combinatorics, 8(4), 409-423. https://doi.org/10.1007/s00026-004-0229-z

The graph-theoretic operation of rooted subtree prune and regraft is increasingly being used as a tool for understanding and modelling reticulation events in evolutionary biology. In this paper, we show that computing the rooted subtree prune and reg... Read More about On the computational complexity of the rooted subtree prune and regraft distance.

An indefinite Kaehler metric on the space of oriented lines (2005)
Journal Article
Guilfoyle, B., & Klingenberg, W. (2005). An indefinite Kaehler metric on the space of oriented lines. Journal of the London Mathematical Society, 72(2), 497-509. https://doi.org/10.1112/s0024610705006605

The total space of the tangent bundle of a Kähler manifold admits a canonical Kähler structure. Parallel translation identifies the space ${\mathbb{T}}$ of oriented affine lines in ${\mathbb{R}}^3$ with the tangent bundle of $S^2$. Thus the round met... Read More about An indefinite Kaehler metric on the space of oriented lines.