Results 111 to 120 of about 915,787 (243)

Comparison of Six‐ and Three‐Dimensional Error Corrections for the Planning Target Volume in Patients With Nasopharyngeal Cancer

Journal of Medical Radiation Sciences, EarlyView.
6D correction for CBCT achieves better dose coverage of target tumour volume than 3D correction in patients with nasopharyngeal carcinoma. 6D correction significantly improved the dose coverage of PTV‐low at 5 weeks after treatment as compared to 3D correction.
Huan‐Chun Chen, Ming‐Chung Chou
wiley   +1 more source

Grating‐Lens Empowered Metafiber for Large‐Angle Light Collection With 3D Nanoprinted Structures

Laser &Photonics Reviews, EarlyView.
A grating‐lens‐based Metafiber enables efficient light coupling into single‐mode fibers at large incidence angles. By combining diffraction and focusing on the fiber facet using a 3D nanoprinted holographic structure, light is selectively coupled only at specific angles while suppressing unwanted signals. This approach achieves high coupling efficiency
Jun Sun, Markus A. Schmidt
wiley   +1 more source

Optimizing Ex Vivo MRI and Controlling the Roll of the Specimen Using Container‐ and Brain‐Specific 3D‐Printed Holders

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Positioning and stabilizing a specimen in a container in preparation for ex vivo MRI are challenging. In addition, ex vivo MRI is often performed using preclinical scanners with gradient nonlinearity and nonhomogeneous sensitivity, requiring optimal placement.
Sethu K. Boopathy Jegathambal, Stefano Bambace, Sarah Kim, Junqi Wang, Angela Xiaomeng Zhu, Gurucharan Marthi Krishna Kumar, Ziqi Hao, Han Ru Liu, Aleksandra Bortel, Jérémie P. Fouquet, David A. Rudko, Amir Shmuel   +11 more
wiley   +1 more source

Wind farm analysis using SailoR diagram-based diagnostics to quantify yaw misalignment correction

Energy Conversion and Management: X
This study introduces a novel application of indices derived from the SailoR diagram for detecting and correcting yaw misalignment in wind turbines, which involves an original visualization of principal component analysis.
Alain Ulazia, Gabriel Ibarra-Berastegi, Jon Sáenz, Sheila Carreno-Madinabetia, Unai Elosegui   +4 more
doaj   +1 more source

A Physics‐Informed Koopman Operator Framework for Decentralized Discrete‐Time Sequential Control of a Modular Aerial Parcel Delivery Robot

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This paper presents a Physics‐Informed Koopman Operator (PIKO) framework integrated with a discrete‐time Sequential Action Control (SAC) for real‐time, decentralized control of a modular aerial parcel delivery robot composed of multiple independently actuated propeller modules.
Archit Krishna Kamath, Peng Shi, Ramesh K. Agarwal   +2 more
wiley   +1 more source

LDEF yaw and pitch angle estimates [PDF]

, 1992
Quantification of the LDEF yaw and pitch misorientations is crucial to the knowledge of atomic oxygen exposure of samples placed on LDEF. Video camera documentation of the LDEF spacecraft prior to grapple attachment, atomic oxygen shadows on experiment ...
Gebauer, Linda, Banks, Bruce A.
core  

Dynamic Performance Enhancement of a High‐Agility Hypersonic Mechanical System via a Learning‐Augmented Robust Control Architecture

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The design of control systems for high‐agility mechanical systems operating in extreme environments is a significant challenge in nonlinear dynamics. This paper addresses the complex dynamic control problem of a hypersonic interceptor, modeled as a multi‐input multi‐output (MIMO) mechanical system characterized by strong aerodynamic cross ...
Mohammad Mahdi Soori, Seyed Hossein Sadati   +1 more
wiley   +1 more source

Safeguarded Reinforcement Learning for Dynamic Environments

Optimal Control Applications and Methods, EarlyView.
This paper uses a combination of Reinforcement Learning and Funnel Control to train a fast and safe controller for systems operating in changing environments. Furthermore, the presented formulation overcomes former limitations associated with the need for predefined reference trajectories.
Simon Gottschalk
wiley   +1 more source

Design and Development of a Modular Ballistic Pendulum for High‐Impulse Measurement in Contact and Near‐Field Explosive Loading

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Measuring impulse from explosive charges in contact and near‐field configurations presents practical challenges due to wide variation in impulse magnitude. Ballistic pendula are widely used for impulse measurement, but many existing designs are limited to narrow operating envelopes or are poorly suited to repeated contact testing and tamped ...
R. Alford, R. Hazael, R. Critchley, L. Humphreys   +3 more
wiley   +1 more source

#112 Accuracy of Predicted Angular Measurements Utilizing Virtual Surgical Planning in Bimaxillary Orthognathic Surgery for Treatment of Angle Class III Malocclusions

Graduate Medical Education Research Journal
Mentor: Jason Untrauer Program: Oral & Maxillofacial Surgery Type: Case Report Background: Many studies have demonstrated the accuracy of virtual surgical planning (VSP) for orthognathic surgery. Although the literature supporting VSP accuracy is growing,
Steven Santarossa, Logan McNeil, Jason Untrauer   +2 more
doaj   +1 more source