Results 1 to 10 of about 966,408 (295)

An Intrinsic Geometric Constraint on Morphological Stomatal Traits [PDF]

open access: yesFrontiers in Plant Science, 2021
A strong negative non-linear relationship exists between stomatal density (SD) and size (SS) or length (SL), which is of high importance in gas exchange and plant evolution. However, the cause of this relationship has not been clarified.
Lirong Zhang   +9 more
doaj   +4 more sources

Research on Geometric Constraint Strategies for Controlling the Diameter of Micro-Shafts Manufactured via Wire Electric Discharge Grinding [PDF]

open access: yesMicromachines, 2023
Micro-tools comprising difficult-to-machine materials have seen widespread application in micro-manufacturing to satisfy the demands of micro-part processing and micro-device development.
Jianyu Jia   +6 more
doaj   +2 more sources

Geometric constraint-triggered collagen expression mediates bacterial-host adhesion [PDF]

open access: yesNature Communications, 2023
Cells living in geometrically confined microenvironments are ubiquitous in various physiological processes, e.g., wound closure. However, it remains unclear whether and how spatially geometric constraints on host cells regulate bacteria-host interactions.
Yuting Feng   +13 more
doaj   +2 more sources

Point Cloud Registration Method Based on Geometric Constraint and Transformation Evaluation [PDF]

open access: yesSensors
Existing point-to-point registration methods often suffer from inaccuracies caused by erroneous matches and noisy correspondences, leading to significant decreases in registration accuracy and efficiency.
Chuanli Kang   +5 more
doaj   +2 more sources

Structural-Parametric Synthesis of the RoboMech Class Parallel Mechanism with Two Sliders

open access: yesApplied Sciences, 2021
This paper addresses the structural-parametric synthesis and kinematic analysis of the RoboMech class of parallel mechanisms (PM) having two sliders.
Zhumadil Baigunchekov   +5 more
doaj   +1 more source

An efficient geometric constraint handling method for surrogate-based aerodynamic shape optimization

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Handling a large number of geometric constraints brings a big challenge to the surrogate-based aerodynamic shape optimization (ASO) driven by computational fluid dynamics (CFD).
Kai Wang   +3 more
doaj   +1 more source

Research on constrained localization of ultrasound geometric distribution based on FHN neurons

open access: yesScience Progress, 2023
The autopilot positioning process is mainly affected by three aspects: the first is the spatial geometric distribution of positioning sensors; the second is the screening of spurious observations; and the third is the equivalent ranging error.
Weiwei Li   +4 more
doaj   +1 more source

Optimal Three-Dimensional Antenna Array for Direction Finding With Geometric Constraint

open access: yesIEEE Access, 2020
This paper studies the optimal three-dimensional (3-D) antenna array for direction finding when the antenna array is subject to geometric constraint. Two-dimensional (2-D) planar array has been widely used in existing direction finding systems, and the ...
Si Li, Yinsheng Liu, Li You, Wenjin Wang
doaj   +1 more source

Subsumption Algorithms for Three-Valued Geometric Resolution [PDF]

open access: yesLogical Methods in Computer Science, 2018
In our implementation of geometric resolution, the most costly operation is subsumption testing (or matching): One has to decide for a three-valued, geometric formula, if this formula is false in a given interpretation.
Hans de Nivelle
doaj   +1 more source

Evasion Differential Game of Multiple Pursuers and One Evader for an Infinite System of Binary Differential Equations

open access: yesMathematics, 2022
We study a differential evasion game of multiple pursuers and an evader governed by several infinite systems of two-block differential equations in the Hilbert space l2. Geometric constraints are imposed on the players’ control functions. If the state of
Gafurjan Ibragimov   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy