Results 11 to 20 of about 159,843 (190)

Earth's curvature and visibility between two points [PDF]

open access: yesVojnotehnički Glasnik, 2012
In this study, the Earth's curvature is analyzed from numerous aspects as well as the visibility between two points on the Earth's surface. It also describes the way and the size of the Earth's part which can be approximated in the plane depending on the
Mirko A. Borisov, Radoje D. Banković
doaj   +1 more source

Attitude Sensor from Ellipsoid Observations: A Numerical and Experimental Validation

open access: yesSensors, 2020
The preliminary design and validation of a novel, high accuracy horizon-sensor for small satellites is presented, which is based on the theory of attitude determination from ellipsoid observations.
Dario Modenini   +2 more
doaj   +1 more source

Existence of Gauss John ellipsoid operator problem [PDF]

open access: yesITM Web of Conferences, 2022
There is a common example in convex geometry and Banach space geometry: the unique ellipsoid with the largest volume associated with each symmetric convex body K is called John ellipsoid.
Yu Li’ao, Zou Du
doaj   +1 more source

Minimum ellipsoids [PDF]

open access: yesMathematics of Computation, 1964
Summary: A well-known statistical problem is to determine an ellipsoid \(R_s^e\) in \(E_n\) which contains a certain fraction of the points from a set \(S\). Here we use the word ``contains'' to mean that a point \(p_i\in S\) is either in the interior or on the surface of the ellipsoid \(R_s^e\).
openaire   +2 more sources

Concept of spatial coordinate systems, their defining and implementation as a precondition in geospatial applications [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2015
There are many users of spatial information, and quite large interest about the nature and genesis of such information. Different users found spatial information in the form of maps, plans or alphanumerical tables. Recently, there are more often
Nedeljković Zoran, Sekulić Aleksandar
doaj   +1 more source

An Investigation on the Effective Mass of the Robot: Dependence on the End-Effector Position

open access: yesEngineering Transactions, 2021
In this paper, the mathematical analysis of the robot effective mass is presented. The calculation of this effective mass and its ellipsoid are included.
Abdel-Nasser SHARKAWY
doaj   +1 more source

Definable ellipsoid method, sums-of-squares proofs, and the isomorphism problem [PDF]

open access: yes, 2018
The ellipsoid method is an algorithm that solves the (weak) feasibility and linear optimization problems for convex sets by making oracle calls to their (weak) separation problem.
Atserias, Albert, Ochremiak, Joanna
core   +1 more source

Quantum Steering Ellipsoids [PDF]

open access: yesPhysical Review Letters, 2014
The quantum steering ellipsoid of a two-qubit state is the set of Bloch vectors that Bob can collapse Alice's qubit to, considering all possible measurements on his qubit. We provide an elementary construction of the ellipsoid for arbitrary states, calculate its volume, and explain how this geometric representation can be made faithful.
Jevtic, Sania   +3 more
openaire   +7 more sources

Evolutionary Mahalanobis Distance-Based Oversampling for Multi-Class Imbalanced Data Classification

open access: yesSensors, 2021
The number of sensing data are often imbalanced across data classes, for which oversampling on the minority class is an effective remedy. In this paper, an effective oversampling method called evolutionary Mahalanobis distance oversampling (EMDO) is ...
Leehter Yao, Tung-Bin Lin
doaj   +1 more source

The size and shape of the oblong dwarf planet Haumea [PDF]

open access: yes, 2014
We use thermal radiometry and visible photometry to constrain the size, shape, and albedo of the large Kuiper belt object Haumea. The correlation between the visible and thermal photometry demonstrates that Haumea's high amplitude and quickly varying ...
Brown, Michael E.   +2 more
core   +2 more sources

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