Results 201 to 210 of about 19,423 (220)

A modular equality for m$m$ ‐ovoids of elliptic quadrics

Bulletin of the London Mathematical Society, 2021
An m$m$ ‐ovoid of a finite polar space P$\mathcal {P}$ is a set O$\mathcal {O}$ of points such that every maximal subspace of P$\mathcal {P}$ contains exactly m$m$ points of O$\mathcal {O}$ .
Alexander L. Gavrilyuk, K. Metsch, F. Pavese   +2 more
semanticscholar   +1 more source

Ring Versus Ovoids and Intracavitary Versus Intracavitary-Interstitial Applicators in Cervical Cancer Brachytherapy: Results From the EMBRACE I Study.

International Journal of Radiation Oncology, Biology, Physics, 2020
PURPOSE The aim of this study was to investigate the influence of brachytherapy technique and applicator type on target dose, isodose surface volumes, and organ-at-risk (OAR) dose.
M. Serban, C. Kirisits, A. D. de Leeuw, R. Pötter, I. Jürgenliemk-Schulz, N. Nesvacil, J. Swamidas, R. Hudej, G. Lowe, T. Hellebust, G. Menon, A. Oinam, P. Bownes, B. Oosterveld, M. De Brabandere, K. Koedooder, A. B. Langeland Marthinsen, D. Whitney, J. Lindegaard, K. Tanderup   +19 more
semanticscholar   +1 more source

Efficient measurement of the percolation threshold for random systems of congruent overlapping ovoids

, 2020
The percolation behavior of composites comprising complex-shaped particles is a recurrent problem in materials science. Previous studies focused on the symmetric particles such as spheres, ellipsoids, spherocylinders, etc.
Mingqi Li, Huisu Chen, Jianjun Lin
semanticscholar   +1 more source

A common generalization of hypercube partitions and ovoids in polar spaces

Designs, Codes and Cryptography
We investigate what we call generalized ovoids, that is families of totally isotropic subspaces of finite classical polar spaces such that each maximal totally isotropic subspace contains precisely one member of that family.
J. D'haeseleer, Ferdinand Ihringer, K. Schmidt   +2 more
semanticscholar   +1 more source

On m-ovoids of regular near polygons

Des. Codes Cryptogr., 2016
We generalise the work of Segre (Ann Mat Pura Appl 4(70):1–201, 1965), Cameron et al. (J Algebra 55(2):257–280, 1978), and Vanhove (J Algebr Comb 34(3):357–373, 2011) by showing that nontrivial m-ovoids of the dual polar spaces $$\mathsf {DQ}(2d, q)$$DQ ...
J. Bamberg, Jesse Lansdown, Melissa Lee
semanticscholar   +1 more source

New Non-existence Proofs for Ovoids of Hermitian Polar Spaces and Hyperbolic Quadrics

, 2017
J. Bamberg, J. De Beule, F. Ihringer
semanticscholar   +1 more source

Ovoids, spreads and m-systems of finite classical polar spaces

, 2016
J. Hirschfeld, J. Thas
semanticscholar   +1 more source

Comparative evaluation of two dose optimization methods for image-guided, highly-conformal, tandem and ovoids cervix brachytherapy planning

Physics in Medicine and Biology, 2013
Jiyun Ren, G. Menon, R. Sloboda
semanticscholar   +1 more source

Measurement of dose perturbation around shielded ovoids in high-dose-rate brachytherapy.

Brachytherapy, 2011
M. Hira, M. Podgorsak, W. Jaggernauth, H. Malhotra   +3 more
semanticscholar   +1 more source

On Ovoids of Parabolic Quadrics

Des. Codes Cryptogr., 2006
Simeon Ball, P. Govaerts, L. Storme
semanticscholar   +1 more source