Results 51 to 60 of about 90,342 (256)
On-sky multi-wavelength phasing of segmented telescopes with the Zernike phase contrast sensor
, 2011 Future Extremely Large Telescopes will adopt segmented primary mirrors with several hundreds of segments. Cophasing of the segments together is essential to reach high wavefront quality.
Cavarroc +20 more
core +3 more sources
Annals of Gastroenterological Surgery, EarlyView.We retrospectively analyzed clinical data from patients who underwent hepatectomy for hepatocellular carcinoma (HCC) using LCA‐based grading system. These findings provide a new risk stratification framework for the design of precision surgery to treat patients with HCC.
Ling Liu +5 more
wiley +1 more source
AlgorithmsIn Global Navigation Satellite Systems (GNSS), high-precision position coordinates are typically determined by establishing a double-difference carrier phase observation model and resolving the integer ambiguities within it. Therefore, the ability to fix
Jiangchao Tian +4 more
doaj +1 more source
Improving GNSS Ambiguity Acceptance Test Performance with the Generalized Difference Test Approach
Sensors, 2018 In Global navigation satellite system (GNSS) data processing, integer ambiguity acceptance test is considered as a challenging problem. A number of ambiguity acceptance tests have been proposed from different perspective and then unified into the integer
Lei Wang +6 more
doaj +1 more source
Advanced Intelligent Systems, EarlyView.This study proposes a robust, generalizable new approach for facial type diagnosis. Based on landmark detection and pose normalization, a 94.7% diagnostic accuracy is achieved by Combined Heatmap Regression and Coordinate Regression network. This research makes the AI‐generated preliminary diagnosis more interpretable and reducing the impact of ...
Qianyang Xie +12 more
wiley +1 more source
Optimization and selection of Galileo triple-frequency carrier linear combination
Measurement + Control, 2021 The triple-frequency linear combination with a low noise, a long wavelength, and a weak ionosphere is beneficial to effectively eliminate or weaken the common errors, advance the reliability of cycle slip detection and repair, and speed up the ...
Jun Wang +4 more
doaj +1 more source
Distributed Storage for Data Security
, 2014 We study the secrecy of a distributed storage system for passwords. The encoder, Alice, observes a length-n password and describes it using two hints, which she then stores in different locations. The legitimate receiver, Bob, observes both hints.
Bracher, Annina +2 more
core +1 more source
The Future of Single-Frequency Integer Ambiguity Resolution
, 2011 The coming decade will bring a proliferation of Global Navigation Satellite Systems (GNSSs) that are likely to enable a much wider range of demanding applications compared to the current GPS-only situation. One such important area of application is single-frequency real-time kinematic (RTK) positioning.
Verhagen, S, Teunissen, Peter, Odijk, D
openaire +4 more sources
Modeling and parameter estimation for fractional large‐scale interconnected Hammerstein systems
Asian Journal of Control, EarlyView.Abstract This paper addresses the challenge of modeling and identifying large‐scale interconnected systems exhibiting memory effects, hereditary properties, and non‐local interactions. We propose a fractional‐order extension of the Hammerstein architecture that incorporates Grünwald–Letnikov operators to capture complex dynamics through multiple ...
Mourad Elloumi +2 more
wiley +1 more source
Improved HLLL Lattice Basis Reduction Algorithm to Solve GNSS Integer Ambiguity
International Journal of Aerospace Engineering, 2023 Recently, lattice theory has been widely used for integer ambiguity resolution in the Global Navigation Satellite System (GNSS). When using lattice theory to deal with integer ambiguity, we need to reduce the correlation between lattice bases to ensure ...
Kezhao Li +3 more
doaj +1 more source