Results 61 to 70 of about 55,329 (202)

An improved magnetometer calibration and compensation method based on Levenberg–Marquardt algorithm for multi-rotor unmanned aerial vehicle

Measurement + Control, 2020
In order to improvethe yaw angle accuracy of multi-rotor unmanned aerial vehicle and meet the requirement of autonomous flight, a new calibration and compensation method for magnetometer based on Levenberg–Marquardt algorithm is proposed in this paper. A
Helong Wu, Xinbiao Pei, Jihui Li, Huibin Gao, Yue Bai   +4 more
doaj   +1 more source

Rheology of sheared granular particles near jamming transition

, 2012
We investigate the rheology of sheared granular materials near the jamming transition point. We numerically determine the values of the critical fraction and the exponents for the jamming transition using a finite size scaling and the nonlinear ...
Hayakawa, Hisao, Otsuki, Michio
core   +1 more source

ANN‐Enabled Analysis of Nanoparticle Aggregation and Hall Effects on Ag‐H2O Nanofluid Flow Over a Spinning Disk With Convective Heating and Thermal Radiation

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The exceptional characteristics of nanofluids have turned out to be a significant development in revolutionizing heat transfer mechanisms in several electronic cooling devices and industrial manufacturing processes. The present study deals with the investigation of the second law of thermodynamics applied to the steady MHD fluid flow above a ...
Dixita Sonowal, Bidyasagar Kumbhakar
wiley   +1 more source

Periodic orbits around areostationary points in the Martian gravity field

, 2012
This study investigates the problem of areostationary orbits around Mars in the three-dimensional space. Areostationary orbits are expected to be used to establish a future telecommunication network for the exploration of Mars.
Baoyin, Hexi, Liu, Xiaodong, Ma, Xingrui
core   +1 more source

Five planets and an independent confirmation of HD 196885Ab from Lick Observatory [PDF]

, 2009
We present time series Doppler data from Lick Observatory that reveal the presence of long-period planetary companions orbiting nearby stars. The typical eccentricity of these massive planets are greater than the mean eccentricity of known exoplanets ...
Andrew Howard, Butler, Chatterjee, Chris McCarthy, Debra Fischer, ESA, Fischer, Ford, Ford, Geoffrey W. Marcy, Gregory W. Henry, Henry, Howard, Howard Isaacson, Jason T. Wright, Jeff Valenti, John Asher Johnson, Johnson, Jurić, Katherine Peek, Marcy, Marcy, Matt Giguere, Mayor, Peter Driscoll, Saar, Saar, Sato, Schneider, sDemarque, Takeda, Valenti, Valenti, Wright   +33 more
core   +2 more sources

Advanced Investigation of the Elimination of Methylene Blue From Wastewater Using Activated Carbon–Copper Oxide Nanowires: New Perspectives With Statistical Physical Modeling

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In this study, the actual route of methylene blue (MB) dye adsorption by using fabricated polyfunctional activated carbon–copper oxide nanowires (AC@CuO‐NWs) from bulky wastewater bodies has been investigated. To better understand the exact pathway of the adsorption process, a prominent statistical physics formalism or grand canonical ...
Abdellatif Sakly, Nizar Lefi, Mohamed Bouzid, Salah Knani, Md. Mahmudur Rahman, Besma Graba, Sivarama Krishna Lakkaboyana, Abdelmottaleb Ben Lamine   +7 more
wiley   +1 more source

Enhancement of Electrical Parameter Extraction from Solar Cells Using a Hybrid Genetic Algorithm with the Levenberg-Marquardt Method [PDF]

E3S Web of Conferences
Accurate modeling and simulation of solar photovoltaic (PV) systems are critical for optimizing their performance and efficiency. This requires precise determination of electrical parameters of solar cells, such as photocurrent (Iph), saturation current (
Herbazi Rachid, Amechnoue Khalid, Chahboun Adil   +2 more
doaj   +1 more source

Methodology of Processing Single-Strip Blocks of Imagery with Reduction and Optimization Number of Ground Control Points in UAV Photogrammetry

Remote Sensing, 2020
Unmanned aerial vehicle (UAV) systems are often used to collect high-resolution imagery. Data obtained from UAVs are now widely used for both military and civilian purposes.
Marta Lalak, Damian Wierzbicki, Michał Kędzierski   +2 more
doaj   +1 more source

Polylimonene Improves the In Vivo Wound Healing Performance of Sodium Alginate‐Based Hydrogels

Journal of Applied Polymer Science, EarlyView.
An oligomer derived from orange peel essential oil incorporated into an alginate hydrogel was shown to be biocompatible and to exhibit a high capacity for in vivo incisional wound healing, as confirmed by experimental assays and mathematical models fitted to the data describing wound area reduction as a function of the dressing‐tissue contact time ...
Roniérik Pioli Vieira, Guilherme Frey Schutz, Oana‐Maria Chirliu, Aurelian‐Sorin Pasca, Lenuta Profire, Sandra Van Vlierberghe   +5 more
wiley   +1 more source

A fast closed-form approximate iterative fitting algorithm based on laser absorption spectrum

AIP Advances
This paper presents a novel approach—an efficient closed-form approximation iterative fitting algorithm based on laser absorption spectra. Through this closed-form approximation iterative fitting, key parameters such as peak value, spectral line width ...
Yudi Chen, Qixing Tang, Yujun Zhang, Qi Li, Yuwei Wang, Lu Liu, Juan Liao, Yanwei Gao   +7 more
doaj   +1 more source