Results 131 to 140 of about 975,864 (308)

Quadratic Equations in Groups from the Global Geometry Viewpoint [PDF]

open access: yesarXiv, 1994
I use harmonic maps and minimal surfaces to study quadratic equations in groups.
arxiv  

A comparative analysis of deep learning architectures with data augmentation and multichannel input for locoregional breast cancer radiotherapy

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Studies on deep learning dose prediction increasingly focus on 3D models with multiple input channels and data augmentation, which increases the training time and thus also the environmental burden and hampers the ease of re‐training. Here we compare 2D and 3D U‐Net models with clinical accepted plans to evaluate the appropriateness of
Rosalie Klarenberg   +2 more
wiley   +1 more source

Integrable geometry and Soliton equations in 2+1 dimensions [PDF]

open access: yesarXiv, 1998
Some aspects of the connection between differential geometry and multidimensional soliton equations are discussed.
arxiv  

Assessing the rigidity of thermoplastic masks for head immobilization effectiveness in stereotactic radiosurgery

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract This study compared three Brainlab thermoplastic masks—Cranial 4pi basic, stereotactic (Close Mask V2), and open‐face—to see how well they limited head movement during Stereotactic Radiosurgery (SRS). Using a head phantom, we tested rotational movements (pitch, yaw, and roll) and measured displacements with the ExacTrac system.
Iris Pasion Apale   +2 more
wiley   +1 more source

Differential Cohomology and Gerbes: An Introduction to Higher Differential Geometry

open access: yesAxioms
Differential cohomology is a topic that has been attracting considerable interest. Many interesting applications in mathematics and physics have been known, including the description of WZW terms, string structures, the study of conformal immersions, and
Byungdo Park
doaj   +1 more source

Stability of pairs [PDF]

open access: yesarXiv, 2013
This is essentially an expository note based on S. Paul's works on the stability of pairs. Its connection to K-stability will be also discussed.
arxiv  

Characterization of a prototype rapid kilovoltage x‐ray image guidance system designed for a linear accelerator radiation therapy unit

open access: yesJournal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study evaluates a novel cone‐beam computed tomography (CBCT) imaging solution integrated onto a conventional C‐arm linear accelerator (linac) with increased gantry speed. The purpose is to assess the impact of improved imaging hardware and reconstruction algorithms on image quality.
Theodore Arsenault   +9 more
wiley   +1 more source

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