Results 21 to 30 of about 1,498,959 (338)
SnO2-Based Porous Nanomaterials: Sol-Gel Formation and Gas-Sensing Application
Gels, 2023 Porous nanocomposites using two (tin dioxide–silica dioxide) and three (tin dioxide–indium oxide-silica dioxide)-component systems for gas sensors were created with the sol–gel method.
Irina Kononova +2 more
doaj +1 more source
Line Geometry and Camera Autocalibration [PDF]
Journal of Mathematical Imaging and Vision, 2008 We provide a completely new rigorous matrix formulation of the absolute quadratic complex (AQC), given by the set of lines intersecting the absolute conic. The new results include closed-form expressions for the camera intrinsic parameters in terms of the AQC, an algorithm to obtain the dual absolute quadric from the AQC using straightforward matrix ...
Ronda Prieto, José Ignacio +2 more
openaire +2 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView., 2023 Summary In this contribution, we propose a detailed study of interpolation‐based data‐driven methods that are of relevance in the model reduction and also in the systems and control communities. The data are given by samples of the transfer function of the underlying (unknown) model, that is, we analyze frequency‐response data.
Quirin Aumann, Ion Victor Gosea
wiley +1 more source
The GeoModel tool suite for detector description [PDF]
EPJ Web of Conferences, 2021 The GeoModel class library for detector description has recently been released as an open-source package and extended with a set of tools to allow much of the detector modeling to be carried out in a lightweight development environment, outside of large ...
Bandieramonte Marilena +4 more
doaj +1 more source
Geometry of two-parametric family of linear line complexes
Lietuvos Matematikos Rinkinys, 2005 In this article differential geometry of two-parametric family of linear line complexes in the three-dimensional projective space is considered.
Kazimieras Navickis
doaj +3 more sources
The Plumb-Line Matching Algorithm for UAV Oblique Photographic Photos
Remote Sensing, 2023 Building facades has always been a challenge for feature matching in oblique photogrammetry due to weak textures, non-Lambertian objects, severe occlusion, and distortion.
Xinnai Zhang +4 more
doaj +1 more source
Geometry of Lines on a Cubic Four-Fold
International Mathematics Research Notices, 2023 Abstract For a general cubic four-fold $X\subset {\mathbb {P}}^5$ with Fano scheme of lines $F$, we prove a number of properties of the universal family of lines $I\to F$ and various subloci. We first describe the moduli and ramification theory of the genus four fibration $p:I\to X$ and explore its relation to a birational model of $F ...
Gounelas, Frank, Kouvidakis, Alexis
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Kinematic Differential Geometry of a Line Trajectory in Spatial Movement
Axioms, 2023 This paper investigates the kinematic differential geometry of a line trajectory in spatial movement. Specifically, we provide a theoretical expression of inflection line congruence, which is the spatial equivalent of the inflection circle of planar ...
Areej A. Almoneef, Rashad A. Abdel-Baky
doaj +1 more source
Clues to Quasar Broad Line Region Geometry and Kinematics [PDF]
, 2000 We present evidence that the high-velocity CIV lambda 1549 emission line gas of radio-loud quasars may originate in a disk-like configuration, in close proximity to the accretion disk often assumed to emit the low-ionization lines.
B. J. Wilkes +8 more
core +3 more sources
Multicolored lines in a finite geometry
Discrete Mathematics, 1988 Let P be a set of points, partitioned into blocks \(P_ 1,...,P_ t\), and let \underbar{L} be a set of lines (subsets of P) satisfying the following conditions: (i) each line intersects at least two of the blocks (ii) any two points in distinct blocks are on a unique line (iii) any two points in the same block are on at most one line.
Zoltán Füredi, Ivo G. Rosenberg
openaire +2 more sources