Results 121 to 130 of about 76,408 (300)

DOPPLER FREQUENCY OF REFLECTED SIGNAL ESTIMATION EFFECT ON POLAR COORDINATES OF NOT MANEUVERING TARGET FILTRATION

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The analysis of surveillance radar capabilities, connected with polar coordinates state estimation using Doppler frequency measurement is considered.
S. A. Gorshkov, V. A. Zavizhenets
doaj  

Analysis of arbitrary tooth profiles of cylindrical gears using normal polar coordinates (Application to the generation of a gear tooth profile by a given tooth profile of rack cutter and its interference problem)

Journal of Advanced Mechanical Design, Systems, and Manufacturing
Various coordinate systems have been used in tooth profile analysis for cylindrical gears. An effective approach to tooth profile expression using normal polar coordinates is proposed.
Yuya MURAYAMA, Satoshi KISHI, Nobuhiko HENMI, Hiroshi YAMAZAKI   +3 more
doaj   +1 more source

The Laplacian in Spherical Polar Coordinates

, 2007
The transformation between Cartesian and Spherical Polar coordinates of the Laplacian is carried out analytically, including two different Maple implementations of the same ...
David, Carl W
core  

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Families of Planar Orbits in Polar Coordinates Compatible with Potentials

Mathematics
In light of the planar inverse problem of Newtonian Dynamics, we study the monoparametric family of regular orbits f(r,θ)=c in polar coordinates (where c is the parameter varying along the family of orbits), which are generated by planar potentials V=V(r,
Thomas Kotoulas
doaj   +1 more source

An Experimental High‐Throughput Approach for the Screening of Hard Magnet Materials

Advanced Engineering Materials, EarlyView.
An entire workflow for the high‐throughput characterization and analysis of compositionally graded magnetic films is presented. Characterization protocols, data management tools and data analysis approaches are illustrated with test case Sm(Fe, V)12 based films.
William Rigaut, Pierre Le Berre, Hamdi Jaballah, Lukas Fink, Victor Poline, Richard Haettel, Stéphane Grenier, Gilbert Chahine, Ewen Bellec, Guillaume Buatier, Wilfried Hortschitz, Santa Pile, Thomas Schrefl, Nils Blanc, Yuan Hong, Thibaut Devillers, Nora M. Dempsey   +16 more
wiley   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Cycle of inventions "Cartesian and polar coordinates meters of impedance" [PDF]

, 2012
Patent no. MD 248Z, MD 392Z, MD 420Z, MD 444Z, MD 445Z, MD 489Z. Exibits Clasification: Class no. 5 Industrial and laboratory equipments.The cycle of invention presents two methods for highprecision measurement of impedance: in Cartesian coordinates ...
NASTAS, Vitalie, NICOLAEV, Pavel
core  

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

齿轮轮齿齿廓渐开线的实用直角坐标方程研究

Jixie chuandong, 2002
It is very complicated to calculate the coordinates of the involute profile of gear tooth using the equations under polar coordinates system given in mechanics books, and the involute equations given in maths books are also inapplicable for this purpose.
王友林, 于青, 姜英
doaj