Results 81 to 90 of about 1,409,025 (319)

Low loss, high contrast optical waveguides based on CMOS compatible LPCVD processing: technology and experimental results [PDF]

, 2005
A new class of integrated optical waveguide structures is presented, based on low cost CMOS compatible LPCVD processing. This technology allows for medium and high index contrast waveguides with very low channel attenuation.
Borreman, A., Heideman, R.G., Hoekman, M., Leinse, A., Melloni, A., Morichetti, F.   +5 more
core   +1 more source

Computational Modalities of Belousov-Zhabotinsky Encapsulated Vesicles

, 2010
We present both simulated and partial empirical evidence for the computational utility of many connected vesicle analogs of an encapsulated non-linear chemical processing medium.
Adamatzky, Adamatzky, Adamatzky, Adamatzky, Adamatzky, Adamatzky, Agladze, Agladze, Berlekamp, Bollt, Gorecka, Gorecki, Gorecki, Gorecki, Gorecki, Gorecki, Harold, Igarashia, Kuhnert, Kuhnert, Kusumi, Motoike, Motoike, Noyes, Press, Rambidi, Rambidi, Stanley, Steinbock, Steinbock, Toth, Toth, Vanag, von Neumann, Wolfram, Zaikin, Zhabotinsky   +36 more
core   +1 more source

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

Journal 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, Nienke L. M. Bakx, Coen W. Hurkmans   +2 more
wiley   +1 more source

State-of-the-Art Geospatial Information Processing in NoSQL Databases

ISPRS International Journal of Geo-Information, 2020
Geospatial information has been indispensable for many application fields, including traffic planning, urban planning, and energy management. Geospatial data are mainly stored in relational databases that have been developed over several decades, and ...
Dongming Guo, Erling Onstein
doaj   +1 more source

Constant Curvature Models in Sub-Riemannian Geometry [PDF]

arXiv, 2017
Each sub-Riemannian geometry with bracket generating distribution enjoys a background structure determined by the distribution itself. At the same time, those geometries with constant sub-Riemannian symbols determine a unique Cartan connection leading to their principal invariants.
arxiv  

Practical experience in commissioning ring applicators using ring applicator component type with bravos control software v1.2

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose The Bravos v1.2 control software introduces a ring applicator component type (ACT) with channel length verification to address geometric characteristics and dosimetric discrepancies caused by source positioning inaccuracies. This study aims to commission the ring applicator and investigate the new ring ACT in Bravos 1.2.
Xiuxiu He, Michael A. Trager, Gil'ad N. Cohen, Antonio L. Damato, David Aramburu Núñez   +4 more
wiley   +1 more source

Effect of Scraper Geometry on Scraping HAP/ZrO2 Slurry in Digital Light Processing

Advances in Mathematical Physics, 2021
Digital light processing (DLP) can be used to form HAP/ZrO2 mixed ceramic slurry. In the printing technology, the scraper geometry has an important effect on the scraping process; thus, it is necessary to conduct analysis.
Hai Gu, Jie Zhang, Jianhua Sun, Tiancheng Huang, Jie Jiang, Bin Li, Weiwei Wu   +6 more
doaj   +1 more source

Connections under Symplectic Reduction [PDF]

arXiv, 2000
In this note we give conditions which ensure the reduction of a symplectic connection in the process of a Marsden-Weinstein reduction and of the reduction of a presymplectic manifold.
arxiv  

Data, geometry and homology [PDF]

arXiv, 2022
Homology-based invariants can be used to characterize the geometry of datasets and thereby gain some understanding of the processes generating those datasets. In this work we investigate how the geometry of a dataset changes when it is subsampled in various ways.
arxiv  

Geometric and dosimetric evaluation of a commercial AI auto‐contouring tool on multiple anatomical sites in CT scans

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan, Alexandra Quinn, Patrick Horsley, Joseph Chan, Maegan Stewart, Regina Bromley, Jeremy Booth   +6 more
wiley   +1 more source