Results 11 to 20 of about 27,715 (278)

A quadratic weighted centroid algorithm for tunnel personnel positioning

open access: yesInternational Journal of Distributed Sensor Networks, 2020
To improve the accuracy and generalization of tunnel personnel positioning systems, this article proposes a quadratic weighted centroid algorithm. By adopting a Gaussian filter model to improve the range accuracy of the received signal strength indicator
Haiying Wang   +4 more
doaj   +2 more sources

Incremental Nonlinear Dynamic Inversion Considering Centroid Variation Control for Reusable Launch Vehicles

open access: yesAerospace
For the diverse payloads of Reusable Launch Vehicles and the inevitable problem of change in the center of mass, this paper proposes an incremental nonlinear dynamic inversion considering centroid variation control.
Qiushi Tang, Jiahao Gan, Yuanpeng Fang
doaj   +2 more sources

Tracking of Multiple Maneuvering Random Hypersurface Extended Objects Using High Resolution Sensors

open access: yesRemote Sensing, 2021
With the increased resolution capability of modern sensors, an object should be considered as extended if the target extent is larger than the sensor resolution.
Lifan Sun   +5 more
doaj   +2 more sources

Multi-Label Learning with Class-Based Features Using Extended Centroid-Based Classification Technique (CCBF)

open access: yesProcedia Computer Science, 2015
AbstractReal world applications, such as news feeds categorization deal with multi-label classification problem, where the objects are associated with multiple class labels and each object is represented by a single instance (feature vector). In this paper, a new algorithm adaptation method called centroid-based multi-label classification using class ...
Devi, P.R. Suganya   +2 more
openaire   +2 more sources

Tracking of Maneuvering Complex Extended Object with Coupled Motion Kinematics and Extension Dynamics Using Range Extent Measurements

open access: yesSensors, 2017
The key to successful maneuvering complex extended object tracking (MCEOT) using range extent measurements provided by high resolution sensors lies in accurate and effective modeling of both the extension dynamics and the centroid kinematics.
Lifan Sun   +4 more
doaj   +2 more sources

Crystal structure determination as part of an ongoing undergraduate organic laboratory project: 5-[(E)-styryl]-1,3,4-oxathiazol-2-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C10H7NO2S, provides the first structure of an α-alkenyl oxathiazolone ring. The phenyl ring and the oxathiazolone groups make dihedral angles of 0.3 (3) and −2.8 (3)°, respectively, with the plane of the central alkene group; the ...
Trevor R. Nason   +3 more
doaj   +1 more source

N-Cyclohexylnicotinamide

open access: yesActa Crystallographica Section E, 2010
In the title compound, C12H16N2O, the dihedral angle between the pyridine ring and C/O/N plane is 22.93 (7)°. In the crystal structure, intermolecular N—H...O hydrogen bonds link the molecules, forming extended chains along ...
Na Li
doaj   +1 more source

2′-Amino-3,6-dihydroxyxanthene-9-spiro-1′-isoindolin-3′-one monohydrate

open access: yesActa Crystallographica Section E, 2008
The title compound, C20H14N2O4·H2O, was synthesized by the reaction of fluorescein and hydrazine hydrate in ethanol. In the crystal structure, the organic molecules are linked into extended two-dimensional networks by intermolecular hydrogen bonding.
Gen-Hua Wu, Dong-Xiang Wang
doaj   +1 more source

Detection and parameter estimation of extended targets using the generalized monopulse estimator

open access: yes, 2022
S.3389-3417In many radar applications extended targets appear together with point targets. An important problem in particular for tracking algorithms is to rapidly detect these extended targets and to determine their centroid and shape.
Chaumette, E., Nickel, U., Larzabal, P.
core   +1 more source

Benzene-1,3-dicarboxylic acid–1,2-bis(4-pyridyl)ethene (1/1)

open access: yesActa Crystallographica Section E, 2011
In the title compound, C12H10N2·C8H6O4, the asymmetric unit contains two halves of 1,2-bis(4-pyridyl)ethene (bpe) molecules and one benzene-1,3-dicarboxylic acid (1,3-H2BDC) molecule.
Dong Liu, Ni-Ya Li
doaj   +1 more source

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