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Fuzzy Logic for Incidence Geometry [PDF]

open access: yesThe Scientific World Journal, 2016
The paper presents a mathematical framework for approximate geometric reasoning with extended objects in the context of Geography, in which all entities and their relationships are described by human language. These entities could be labelled by commonly
Alex Tserkovny
doaj   +2 more sources

Design, Implementation, and Verification of High-Accuracy Trapezoidal Dual-Axis Sun Sensors for LEO Satellite Attitude Determination [PDF]

open access: yesSensors
This paper presents a dual-axis sun sensor employing a cross-slit aperture in conjunction with a four-quadrant trapezoidal photodiode layout. The cross-slit configuration enhances angular sensitivity and resolution, while the trapezoidal photodiode ...
Mang Ou-Yang   +12 more
doaj   +2 more sources

Optimization of hydrofoil leading-edge geometry for delaying incipient cavitation using a CFD–GA approach [PDF]

open access: yesScience Progress
Cavitation is a common phenomenon in hydraulic machinery, which brings negative impacts such as noise, vibration, performance drop and material damage into hydraulic turbomachinery.
Xinyi Xie, Ran Tao
doaj   +2 more sources

Velocity Increment on Incidence Angle near the Leading Edge of the Compressor Cascade

open access: yesAerospace, 2023
The geometry of a compressor leading edge has an important effect on the aerodynamic performance at an off-designed incidence angle. The current geometric design methods of the leading edge are usually developed based on the flow characteristics at the ...
Xiaobin Xu   +3 more
doaj   +1 more source

EFFICIENT SPATIO-TEMPORAL MODELLING TO ENABLE TOPOLOGICAL ANALYSIS [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Time-dependent analysis scenarios such as heat, wind or flood analysis in cities and in landscapes need a correct and consistent modelling of geometry and topology over time.
M. W. Jahn, P. Kuper, M. Breunig
doaj   +1 more source

Detection of Direct Sun Glare on Drivers from Point Clouds

open access: yesRemote Sensing, 2022
Sunlight conditions can reduce drivers’ visibility, which is a safety concern on road networks. This research introduces a method to study sun glare incidence in road environments.
Silvia María González-Collazo   +3 more
doaj   +1 more source

Echocardiographic left ventricular geometry profiles for prediction of stroke, coronary heart disease and all-cause mortality in the Chinese community: a rural cohort population study

open access: yesBMC Cardiovascular Disorders, 2021
Background The utility of echocardiographic left ventricular (LV) geometry in the prediction of stroke/coronary heart disease (CHD) and all-cause mortality is not well characterized.
Tan Li   +4 more
doaj   +1 more source

Numerical Investigation into a New Method of Non-Axisymmetric End Wall Contouring for Axial Compressors

open access: yesEnergies, 2022
To deal with corner separation in high-load axial compressors, this paper proposes a new end wall contouring method aimed at controlling the end wall secondary flow in more than one local area, generating a geometry with fewer control variables that is ...
Fuhao You   +4 more
doaj   +1 more source

Numerical Investigation of External Electromagnetic Field Coupling to Coplanar Waveguide [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2020
In this paper, for the first time, effects of external electromagnetic fields on a coplanar waveguide (CPW) are numerically studied by means of the method of finite elements. Two CPW lines with different geometry and dielectric substrate permittivity are
Hamideh Dashti
doaj   +1 more source

AN INCIDENCE CONJECTURE OF BOURGAIN OVER FIELDS OF POSITIVE CHARACTERISTIC

open access: yesForum of Mathematics, Sigma, 2016
In this note we generalize a recent theorem of Guth and Katz on incidences between points and lines in 3-space from characteristic 0 to characteristic $p ...
JORDAN S. ELLENBERG, MÁRTON HABLICSEK
doaj   +1 more source

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