Results 81 to 90 of about 1,107,761 (293)
Optimising Beam Geometry in Orthopaedic X‐Rays: A Phantom Study
Journal of Medical Radiation Sciences, EarlyView.Antoni Cieszynski, a 19th‐century Polish dentist, developed the bisecting angle technique in 1907, which uses isometry rules to improve anatomical imaging accuracy in dentistry. Our experiment tested this technique on the radius bone at various angles, demonstrating that it significantly reduced elongation and distortion compared to traditional methods,
Jodie Ringin +3 more
wiley +1 more source
Stäackel-type Dynamic Model of the Galaxy Based on Maser Kinematic Data
Open Astronomy, 2016 A dynamic model of the Galaxy is constructed based on kinematic data for masers with trigonometric parallaxes. Maser data is used to compute the model potential in the Galactic plane.
Gromov A. O. +2 more
doaj +1 more source
Predefined‐Time Dynamic Surface Control of Tank Horizontal Stabilization System With Disturbance
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Modern new tanks are difficult to achieve high precision control of the horizontal stabilization system due to electromechanical coupling and road surface disturbance during high‐speed combat. A predefined‐time dynamic surface controller (DSCPT) is proposed for the fast stabilization and strong disturbance problems of the tank horizontal ...
Zhicheng Fan +5 more
wiley +1 more source
International Journal of Mechanical System Dynamics, EarlyView.ABSTRACT Research on the failure mechanisms of gears with multiple cracks has gained widespread attention. Among these, the study of the mesh stiffness characteristics of gears with multiple cracks is crucial for optimizing gear design and improving transmission reliability.
Luyan Xu, Xin Yu, Yunyun Sun
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Summability and Uniqueness of Double Trigonometric Integrals [PDF]
, 1954 Victor L. Shapiro
openalex +2 more sources
Fundamental Solution of Laplace's Equation in Hyperspherical Geometry
Symmetry, Integrability and Geometry: Methods and Applications, 2011 Due to the isotropy of d-dimensional hyperspherical space, one expects there to exist a spherically symmetric fundamental solution for its corresponding Laplace-Beltrami operator.
Howard S. Cohl
doaj +1 more source
A Constitutive Model Allowing for Particle Size‐Shape Coevolution
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT This paper presents a constitutive model developed within the Continuum Breakage Mechanics (CBM) framework. The proposed model explicitly accounts for particle shape evolution during the compression of crushable granular materials. Most importantly, the proposed formulation includes a novel expression of the dissipation function that enables a
Divyanshu Lal, Giuseppe Buscarnera
wiley +1 more source
Optimal Control Applications and Methods, EarlyView.Hybrid Algorithm‐Based Optimal FOPI Controller in Three‐phase UPQC system ABSTRACT Time delay (TD) is a common phenomenon in practical systems. Most studies have focused on the classical notion of integer‐order TD. However, it should not be neglected that the delay can also be noninteger.
Erdinç Şahin
wiley +1 more source
Polymer Composites, EarlyView.Investigation of Thermal Behavior in 3D‐Printed TPMS Heat Exchangers utilizing h‐BN Photopolymeric Composites. ABSTRACT This study reports the first investigation of the thermal behavior of compact heat exchangers (HXs) with complex geometries 3D‐printed using a photopolymeric composite as the base material.
Gabriel Benedet Dutra +6 more
wiley +1 more source