Results 91 to 100 of about 4,762,893 (253)
Projections of Grassmannians of lines and characterization of Veronese varieties [PDF]
arXiv, 1997 We characterize the double Veronese embedding of P^n as the only variety that, under certain general conditions, can be isomorphically projected from the Grassmannian of lines in P^{2n+1} to the Grassmannian of lines in P^{n+1}.
arxiv
A review of artificial intelligence in brachytherapy
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Artificial intelligence (AI) has the potential to revolutionize brachytherapy's clinical workflow. This review comprehensively examines the application of AI, focusing on machine learning and deep learning, in various aspects of brachytherapy.
Jingchu Chen +4 more
wiley +1 more source
On some points-and-lines problems and configurations [PDF]
arXiv, 2006 We apply an old method for constructing points-and-lines configurations in the plane to study some recent questions in incidence geometry.
arxiv
Noncommutative Generalization of Wilson Lines [PDF]
, 2014 A classical Wilson line is a cooresponedce between closed paths and elemets of a gauge group. However the noncommutative geometry does not have closed paths. But noncommutative geometry have good generalizations of both: the covering projection, and the group of covering transformations.
arxiv +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract The thermoluminescence dosimeter (TLD) sheet is a measurement device coated with manganese‐doped LiB3O5 in sheet form. The sheet is 0.2‐mm thick and flexible. Hence, it can fit and be installed on irregular surfaces. The current study aimed to evaluate the feasibility of measuring patient surface doses during radiation therapy using TLD sheets.
Yuya Miyasaka +8 more
wiley +1 more source
Birational Geometry of Rationally Connected Manifolds via Quasi-lines [PDF]
arXiv, 2005 This is, mostly, a survey of results about the birational geometry of rationally connected manifolds, using rational curves analogous to lines in ${\mathbb P}^n$ ({\it quasi-lines}). Various characterizations of a Zariski neighbourhood of a line in ${\mathbb P}^n$ are obtained, some of them being new.
arxiv
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Single‐isocenter multitarget (SIMT) radiosurgery has become increasingly popular as advancement in planning and delivery systems have made this approach clinically viable. With targets varying in size and distance from isocenter, SIMT plans are highly complex with dynamic multileaf collimator (MLC) motion.
Hem Moktan +3 more
wiley +1 more source
TEACHING BASICS OF THE DESCRIPTIVE GEOMETRY – RELATIVE POSITIONS OF LINES AND PLANES
Journal of Industrial Design and Engineering Graphics, 2015 The paper presents applications developed for teaching descriptive geometry. The purpose of the applications is represented by the understanding of the basic elements of the descriptive geometry – the lines and the planes and their relative positions in ...
CLINCIU Ramona
doaj
Vector bundles and Arakelov geometry on the projective line over the integers [PDF]
arXiv, 2014 We study locally free sheaves of rank two on the projective line over the integers, especially indecomposable ones. Subsequently we apply various concepts of Arakelov geometry to these sheaves. We compute for example the arithmetic Chern classes and use the arithmetic Riemann-Roch theorem.
arxiv
Evaluation of the effect of metal stents on dose perturbation in the carbon beam irradiation field
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Propose Carbon ion therapy is indicated for cases in which stents have been inserted, such as bile ducts, but the effect of metal stents on carbon ion therapy is unclear. In this study, the dose perturbation of carbon ion therapy caused by metallic bile duct stents was evaluated by dosimetry. Materials and methods Five different types of metal
Yuya Miyasaka +8 more
wiley +1 more source