Results 11 to 20 of about 82,944 (202)

Reliable Indoor Pseudolite Positioning Based on a Robust Estimation and Partial Ambiguity Resolution Method

Sensors, 2019
The unscented Kalman filter (UKF) can effectively reduce the linearized model error and the dependence on initial coordinate values for indoor pseudolite (PL) positioning unlike the extended Kalman filter (EKF).
Xin Li, Guanwen Huang, Peng Zhang, Qin Zhang   +3 more
doaj   +3 more sources

GPS/BDS RTK Positioning Based on Equivalence Principle Using Multiple Reference Stations

Remote Sensing, 2020
Reliable real-time kinematic (RTK) is crucially important for emerging global navigation satellite systems (GNSSs) applications, such as drones and unmanned vehicles.
Jian Wang, Tianhe Xu, Wenfeng Nie, Guochang Xu   +3 more
doaj   +1 more source

Ambiguity of the Moment Tensor [PDF]

, 2005
An earthquake on a fault separating two dissimilar materials does not have a well-defined moment density tensor. We present a complete characterization of this bimaterial ambiguity in the general case of slip on a fault in an anisotropic medium.
Ampuero, Jean-Paul, Dahlen, F. A.
core   +1 more source

Improving the quality of Gujarati-Hindi Machine Translation through part-of-speech tagging and stemmer-assisted transliteration [PDF]

, 2013
Machine Translation for Indian languages is an emerging research area. Transliteration is one such module that we design while designing a translation system. Transliteration means mapping of source language text into the target language.
Ameta, Juhi, Joshi, Nisheeth, Mathur, Iti   +2 more
core   +1 more source

Evidence for alignment of the rotation and velocity vectors in pulsars [PDF]

, 2005
We present strong observational evidence for a relationship between the direction of a pulsar's motion and its rotation axis. We show carefully calibrated polarization data for 25 pulsars, 20 of which display linearly polarized emission from the pulse ...
A. G. Lyne, Anderson, Arras, Backer, Bailes, Bailes, Bailes, Blaskiewicz, Bock, Brisken, Brisken, Brisken, Caraveo, Chatterjee, Cordes, Cowsik, Crawford, Deshpande, Dewey, Dodson, Dodson, Everett, Fomalont, Fomalont, Frail, G. Hobbs, Gould, Graham-Smith, Hamilton, Hamilton, Hamilton, Hamilton, Han, Helfand, Hobbs, Hobbs, Hotan, Iben, J. M. Weisberg, Johnston, Karastergiou, Kern, Kijak, Kramer, Kramer, Kuijken, Lai, Luo, Lyne, Lyne, Lyne, M. Kramer, Manchester, Manchester, Manchester, McCulloch, Moffett, Morris, Ng, Nicastro, Qiao, Radhakrishnan, Radhakrishnan, Radhakrishnan, Radhakrishnan, Rankin, S. Vigeland, Schmitt, Serafimovich, Simon Johnston, Smith, Spruit, Tademaru, Tademaru, Taylor, Thorsett, Von Hoensbroech, Weisberg, Weisberg, Wex, Willems   +80 more
core   +5 more sources

Vagueness and referential ambiguity in a large-scale annotated corpus [PDF]

, 2008
In this paper, we argue that difficulties in the definition of coreference itself contribute to lower inter-annotator agreement in certain cases. Data from a large referentially annotated corpus serves to corroborate this point, using a quantitative ...
Versley, Yannick
core   +2 more sources

How culture influences perspective taking: differences in correction, not integration [PDF]

, 2013
Individuals from East Asian (Chinese) backgrounds have been shown to exhibit greater sensitivity to a speaker’s perspective than Western (U.S.) participants when resolving referentially ambiguous expressions.
Barr, D.J., Gann, T.M., Keysar, B., Wu, S.   +3 more
core   +2 more sources

Validation of Soft Classification Models using Partial Class Memberships: An Extended Concept of Sensitivity & Co. applied to the Grading of Astrocytoma Tissues

, 2013
We use partial class memberships in soft classification to model uncertain labelling and mixtures of classes. Partial class memberships are not restricted to predictions, but may also occur in reference labels (ground truth, gold standard diagnosis) for ...
Beleites, Claudia, Salzer, Reiner, Sergo, Valter   +2 more
core   +1 more source

Estimating Absolute-Phase Maps Using ESPIRiT and Virtual Conjugate Coils

, 2016
Purpose: To develop an ESPIRiT-based method to estimate coil sensitivities with image phase as a building block for efficient and robust image reconstruction with phase constraints.
Lustig, Michael, Uecker, Martin
core   +1 more source

An integer ambiguity clustering estimator for real-time precise point positioning

Geo-spatial Information Science
Real-time precise point positioning with ambiguity resolution (PPP-AR) is considered a valuable positioning tool applicable in various fields. Limited by the precision and stability of real-time satellite products and observation streams, it is ...
Kunlun Zhang, Jianghui Geng, Guangcai Li, Jiang Guo   +3 more
doaj   +1 more source