Results 101 to 110 of about 426,887 (303)

A Wind Estimation Method with an Unmanned Rotorcraft for Environmental Monitoring Tasks

Sensors, 2018
Wind velocity (strength and direction) is an important parameter for unmanned aerial vehicle (UAV)-based environmental monitoring tasks. A novel wind velocity estimation method is proposed for rotorcrafts. Based on an extended state observer, this method
Jia-Ying Wang, Bing Luo, Ming Zeng, Qing-Hao Meng   +3 more
doaj   +1 more source

Simulation Experiment Research of Mine Roadway Simulating Test Device with Adjustable Wind Velocity and Temperature and Humidity. [PDF]

Int J Environ Res Public Health, 2023
Liu L, Du C, Wang Y, Chen J, Yang B, Jin W.   +5 more
europepmc   +1 more source

Wind inhibition by X-ray irradiation in HMXBs: the influence of clumping and the final X-ray luminosity

, 2018
In wind-powered X-ray binaries, the radiatively driven stellar wind from the primary may be inhibited by the X-ray irradiation. This creates the feedback that limits the X-ray luminosity of the compact secondary.
Krticka, Jiri, Krtickova, Iva, Kubat, Jiri   +2 more
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Study on flow around straight-bladed vertical axis wind turbine under low tip speed ratio

Journal of Fluid Science and Technology, 2014
The flow field around a vertical axis wind turbine (VAWT) is very complicated because the blades pass in non-uniform flow field by the blade wake during rotation.
Qing'an LI, Takao MAEDA, Yasunari KAMADA, Junsuke MURATA, Toshiaki KAWABATA, Tetsuya KOGAKI   +5 more
doaj   +1 more source

Wind velocity field estimation from aircraft derived data using Gaussian process regression. [PDF]

PLoS One, 2022
Marinescu M, Olivares A, Staffetti E, Sun J.   +3 more
europepmc   +1 more source

The velocity characteristics of WR stellar winds [PDF]

International Astronomical Union Colloquium, 1981
The stellar winds of hot early-type stars are characterised spectroscopically by the presence of P-Cygni profiles, which are most marked for resonance transitions of common ions and generally occur in the UV, and typical resonance lines of SiIV, CIV, NV and OVI are well known P-Cygni signatures of stellar winds in luminous OB stars.
openaire   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Determination of Wind Parameters by the Method of Differential Corrections [PDF]

Journal of Astronomy and Space Sciences, 1994
This paper describes a method for the determination of wind parameters as mass-loss rate, wind velocity, stochastic velocity in Zeta Aurigae type binaries.
You-Kyung Kim, Young Woon Kang
doaj  

Numerical simulation of the influence of building-tree arrangements on wind velocity and PM_2.5 dispersion in urban communities. [PDF]

Sci Rep, 2022
Li F, Rubinato M, Zhou T, Li J, Chen C.
europepmc   +1 more source