Results 131 to 140 of about 410,519 (339)
The Differences Between Birkhoff and Isosceles Orthogonalities in Radon Planes
Extracta Mathematicae, 2017 The notion of orthogonality for vectors in inner product spaces is simple, interesting and fruitful. When moving to normed spaces, we have many possibilities to extend this notion. We consider Birkhoff orthogonality and isosceles orthogonality.
Hiroyasu Mizuguchi
doaj
Some Geometry of Nodal Curves [PDF]
arXiv, 2007 We find a geometrical method of analysing the singularities of a plane nodal curve. The main results will be used in a forthcoming paper on geometric Plucker formulas for such curves. Plane nodal curves, that is plane curves having at most nodes as singularities, form an important class of curves, as any projective algebraic curve is birational to a ...
arxiv
Development of a generic focal spot measurement method suitable for bore‐type linacs
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose In linear accelerators, deviations in the x‐ray focal spot position significantly affect the accuracy of radiation therapy. However, as the focal spot position in bore‐type linac systems such as the Radixact system, cannot be assessed using conventional methods, a new evaluation method is required.
Hidetoshi Shimizu +5 more
wiley +1 more source
Plane failure in rock slopes – A review on stability analysis techniques
Journal of King Saud University: Science, 2019 In stratified sedimentary and meta-sedimentary rock formations ‘plane mode’ of rock failure is very common. The plane failure occurs when a structural discontinuity plane such as; bedding plane, fault plane or preferred orientations of a joint set dips ...
Tarun Kumar Raghuvanshi
doaj
Book Review: A New Analysis of Plane Geometry Finite and Differential [PDF]
, 1918 Gregory H. Graves
openalex +1 more source
A method for measuring spatial resolution based on clinical chest CT sequence images
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study aimed to develop and validate a method for characterizing the spatial resolution of clinical chest computed tomography (CT) sequence images. Methods An algorithm for characterizing spatial resolution based on clinical chest CT sequence images was developed in Matlab (2021b).
Ying Liu +3 more
wiley +1 more source
Practical Plane and Solid Geometry. By J. Harrison, M.I.M.E. Pp. xiii., 250. (Macmillan & Co.) [PDF]
, 1903 E. M. Langley
openalex +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Due to the tight curvature in their design, ring applicators are usually associated with large positioning errors. The standard practice to correct for these deviations based on global offsets may not be sufficient to comply with the recommended tolerance.
Leon G. Aldrovandi +3 more
wiley +1 more source