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Outputs (23)

On the geometry of spaces of oriented geodesics. (2011)
Journal Article
Alekseevsky, D., Guilfoyle, B., & Klingenberg, W. (2011). On the geometry of spaces of oriented geodesics. Annals of Global Analysis and Geometry, 40(4), 389-409. https://doi.org/10.1007/s10455-011-9261-5

Let M be either a simply connected pseudo-Riemannian space of constant curvature or a rank one Riemannian symmetric space, and consider the space L(M) of oriented geodesics of M. The space L(M) is a smooth homogeneous manifold and in this paper we de... Read More about On the geometry of spaces of oriented geodesics..

On the approximation complexity hierarchy. (2011)
Presentation / Conference Contribution
Bordewich, M. (2010, September). On the approximation complexity hierarchy. Presented at 8th International Workshop on International Workshop on Approximation and Online Algorithms, WAOA 2010, Liverpool

This paper presents an extension of Ladner’s Theorem to the approximation complexity hierarchy. In 1975 Ladner proved that if P≠NP, then there exists an incomplete problem A which is neither in P nor NP-complete. Here we show that if RP≠NP, then ther... Read More about On the approximation complexity hierarchy..

Holographic recording of vertical surfaces (2011)
Presentation / Conference Contribution
Soulard, F., McWilliam, R., Cowling, J., Purvis, A., Williams, G., Seed, N., Toriz-Garcia, J., & Ivey, P. (2011, December). Holographic recording of vertical surfaces. Presented at Digital Holography and Three-Dimensional Imaging (DH), Tokyo, Japan

Vertical tracks on the sidewall of a silicon die using 3D holographic photolithography (2011)
Journal Article
Toriz-Garcia, J., Williams, G., McWilliam, R., Seed, N., Purvis, A., Soulard, F., …Ivey, P. (2011). Vertical tracks on the sidewall of a silicon die using 3D holographic photolithography. Journal of Micromechanics and Microengineering, 21(8), Article 085034. https://doi.org/10.1088/0960-1317/21/8/085034

We describe the patterning of multiple 10 µm wide conductive tracks down the vertical sidewall of a 500 µm thick silicon die. A novel photolithographic technique is used, which utilizes a computer-generated hologram mask in conjunction with a diffrac... Read More about Vertical tracks on the sidewall of a silicon die using 3D holographic photolithography.

Three-dimensional holographic lithography by an iterative algorithm (2011)
Journal Article
Cowling, J., Williams, G., Purvis, A., McWilliam, R., Toriz-Garcia, J., Seed, N., …Ivey, P. (2011). Three-dimensional holographic lithography by an iterative algorithm. Optics Letters, 36(13), 2495-2497. https://doi.org/10.1364/ol.36.002495

We have applied an iterative algorithm for hologram design with multiple output image planes arranged in close proximity to create continuous patterns within an imaging volume. These holograms have been designed for photolithography on three-dimensio... Read More about Three-dimensional holographic lithography by an iterative algorithm.

A Singular-Value-Based Adaptive Modulation and Cooperation Scheme for Virtual-MIMO Systems (2011)
Journal Article
Jiang, J., Thompson, J. S., & Sun, H. (2011). A Singular-Value-Based Adaptive Modulation and Cooperation Scheme for Virtual-MIMO Systems. IEEE Transactions on Vehicular Technology, 60(6), 2495-2504. https://doi.org/10.1109/tvt.2011.2155686

This paper presents a practical virtual multiple-input-multiple-output (MIMO) system that implements bit-interleaved coded modulation (BICM) and compress-and-forward (CF) cooperation. A minimum mean square error (MMSE) receiver is considered since it... Read More about A Singular-Value-Based Adaptive Modulation and Cooperation Scheme for Virtual-MIMO Systems.