Results 81 to 90 of about 25,855 (295)

Construction new rational cubic spline with application in shape preservations

Cogent Engineering, 2018
This study considers the construction a new C 1 rational cubic spline (cubic numerator and quadratic denominator) with three parameters. Some mathematical properties of this rational function will be investigated in details.
Samsul Ariffin Abdul Karim
doaj   +1 more source

The non‐hydrostatic option of the ECMWF global weather forecast model: Improvements for kilometre‐scale modelling

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study presents improvements to the non‐hydrostatic version of the European Centre for Medium‐Range Weather Forecasts (ECMWF) Integrated Forecasting System (IFS), enabling stable global simulations at 1.4‐km resolution. A systematic comparison with the hydrostatic version at resolutions from 9 to 1.4 km shows that non‐hydrostatic effects emerge in ...
Jozef Vivoda, Inna Polichtchouk, Michail Diamantakis, Filip Váňa   +3 more
wiley   +1 more source

Range-Restricted Surface Interpolation Using Rational Bi-Cubic Spline Functions With 12 Parameters

IEEE Access, 2019
This paper discusses the constraint data interpolation or range restricted interpolation for surface data arranges on rectangular meshes that lie above or below an arbitrary plane and between two arbitrary planes by using partially blended rational bi ...
Samsul Ariffin Abdul Karim, Azizan Saaban, Vaclav Skala   +2 more
doaj   +1 more source

Numerical Solutions of Matrix Differential Models using Cubic Matrix Splines II

, 2006
This paper presents the non-linear generalization of a previous work on matrix differential models. It focusses on the construction of approximate solutions of first-order matrix differential equations Y'(x)=f(x,Y(x)) using matrix-cubic splines.
A. Hervás, Al-Said, Ascher, Ascher, Barraud, Camacho, Casti, Defez, E. Defez, Flett, Golub, Graham, Jódar, Jódar, Jódar, Jódar, L. Soler, Lancaster, Loscalzo, M.M. Tung, Ortega, Reid   +21 more
core   +2 more sources

Vector Field‐Based Collision‐Free Navigation in Tunnel‐Like Environments

Journal of Field Robotics, EarlyView.
ABSTRACT Tunnel‐like environments, renowned for their vast scale, confined spaces, and limited visibility, present significant challenges for autonomous robot navigation. This study addresses the critical issue of guiding robots through such environments while ensuring collision‐free navigation and maintaining a specified safety margin from both tunnel
Bao Jianjun, Licheng Feng, Yueqi Wang, Kai Zhao, Binghao Li, Liao Wu   +5 more
wiley   +1 more source

Smooth joining of spline curves ensuring a high order of smoothness

Омский научный вестник
Smoothly blending two curves is one of the fundamental and complex problems of geometric modeling in computer-aided design systems. This article proposes a method for constructing a smoothly blended curve between two spline curves of arbitrary format and
V. G. Mufteev, F. T. Ziganshina, V. I. Gumerov   +2 more
doaj   +1 more source

Cameras do not always take a full picture: wolf activity patterns revealed by accelerometers versus road‐positioned camera traps

Remote Sensing in Ecology and Conservation, EarlyView.
Camera traps have become an increasingly popular non‐invasive alternative to animal‐attached devices for studying wildlife behaviour. This study compared wolf (Canis lupus) activity patterns derived from collar accelerometers and road‐positioned camera traps and revealed strong overall agreement but also important seasonal and diel mismatches between ...
Katarzyna Bojarska, Michał Żmihorski, Morteza Naderi, J. David Blount, Mark Chynoweth, Emrah Coban, Çağan H. Şekercioğlu, Josip Kusak   +7 more
wiley   +1 more source

The zeros of rational splines and complex splines

Journal of Approximation Theory, 1983
In this paper the author studies zeros of rational and complex splines. In section 1 he estimates the total number of zeros of a certain class of real analytic functions and rational splines. In section 2 he examines the problem concerning zeros of complex spline functions and obtains a sharp upper bound of the zeros of certain class of complex splines.
openaire   +1 more source

An algorithm for surface smoothing with rational splines [PDF]

Discussed is an algorithm for smoothing surfaces with spline functions containing tension parameters. The bivariate spline functions used are tensor products of univariate rational-spline functions.
Schiess, James R.
core   +1 more source

Disc‐Toroid Hybrid Lipid Nanoparticles for Efficient Drug Encapsulation and Subcutaneous Delivery

Small, EarlyView.
This study demonstrates sub‐50 nm solid‐lipid nanoparticles with long‐term stability, high drug loading, and strong tissue compatibility. Disc‐toroid morphology is confirmed and may play a role in cellular interactions, while low cytotoxicity and minimal systemic permeation confirm depot‐like behavior. These nanoparticles represent a versatile platform
Zanelle van Niekerk, Rima Nuwayhid, Stefaniya Gaydarova, Eva Bittrich, Natalia Makarova, Susanne Boye, Christo Tzachev, Jan C. Simon, Sandra Franz, Albena Lederer   +9 more
wiley   +1 more source