Results 191 to 200 of about 53,534 (260)

The isominwidth problem on the 2‐sphere

Mathematika, Volume 72, Issue 1, January 2026.
Abstract Pál's isominwidth theorem states that for a fixed minimal width, the regular triangle has minimal area. A spherical version of this theorem was proven by Bezdek and Blekherman, if the minimal width is at most π2$\tfrac{\pi }{2}$. If the width is greater than π2$\tfrac{\pi }{2}$, the regular triangle no longer minimizes the area at fixed ...
Ansgar Freyer, Ádám Sagmeister
wiley   +1 more source

Astigmatism research and application of vector method of the last half century: a bibliometric and visualized analysis. [PDF]

Front Med (Lausanne)
Zhang J, Xu L, Shan M, Yuan L, Dong Y, Wang Y.   +5 more
europepmc   +1 more source

A Coarse‐to‐Fine 3D LiDAR Localization With Deep Local Features for Long‐Term Robot Navigation in Large Environments

International Journal of Intelligent Systems, Volume 2026, Issue 1, 2026.
The location of a robot is a key aspect in the field of mobile robotics. This problem is particularly complex when the initial pose of the robot is unknown. In order to find a solution, it is necessary to perform a global localization. In this paper, we propose a method that addresses this problem using a coarse‐to‐fine solution.
Míriam Máximo, Antonio Santo, Arturo Gil, Mónica Ballesta, David Valiente, Floriano Cuccureddu   +5 more
wiley   +1 more source

Operational Properties of SCN Function, Optimization Condition, and Exactness of Penalty Function for SCN Optimization

Journal of Mathematics, Volume 2026, Issue 1, 2026.
This paper defines a strong convertible nonconvex (SCN) function for solving the unconstrained optimization problems with the nonconvex or nonsmooth (nondifferentiable) function. First, the concept of SCN function is defined, where the SCN functions are nonconvex or nonsmooth.
Min Jiang, Chuangyin Dang, Zhiqing Meng, Rui Shen, Zai Yun Peng   +4 more
wiley   +1 more source

The use of multi-sensor drone data for the development and validation of methods to track and characterize marine animals. [PDF]

Sci Rep
Sexton KJ, Danko EF, Boesch A, Cheung N, DiGiacomo AE, Holt RW.   +5 more
europepmc   +1 more source

The Dynamical Landscape of the Negative‐Order (3+1)‐Dimensional Calogero–Bogoyavlenskii–Schiff Equation

Journal of Mathematics, Volume 2026, Issue 1, 2026.
A new negative‐order form of the (3 + 1)‐dimensional Calogero–Bogoyavlenskii–Schiff equation is examined in this investigation. This equation plays an important role in accurately describing the thermodynamic properties of mixtures, particularly in chemical engineering applications.
Ulviye Demirbilek, Jan Muhammad, Arzu Akbulut, Usman Younas, Taha Radwan, Karim K. Ahmed, Dimitri Mugnai   +6 more
wiley   +1 more source

Multi-stage gaze-controlled virtual keyboard using eye tracking. [PDF]

PLoS One
Emile Tatinyuy V, Noumsi Woguia AV, Ngono JM, Fono LA.   +3 more
europepmc   +1 more source

Exact Solitary Wave Solutions in Nonlinear Carbon Nanotube Composite Beams on Viscoelastic Foundations Under M‐Truncated Derivative

Journal of Mathematics, Volume 2026, Issue 1, 2026.
In this study, the nonlinear partial differential equation that governs the free vibration of a carbon nanotube composite beam is analytically investigated using the truncated M‐fractional derivative. This model is a beam supported by a nonlinear viscoelastic base and reinforced by carbon nanotubes.
Nadia Javed, Nauman Ahmed, Muhammad Zafarullah Baber, Tukur Abdulkadir Sulaiman, Taha Radwan, Abeer S. Khalifa, Karim K. Ahmed, Dimitri Mugnai   +7 more
wiley   +1 more source

To compare horizontal strabismus deviation as assessed from photographs with that in the strabismus clinic using the prism bar. [PDF]

Indian J Ophthalmol
Bose A, Amitava AK, Gupta Y, Sharma N, Raza SA, Masood A, Singh R, Meena G.   +7 more
europepmc   +1 more source