Vibrations of a vertical beam rotating with variable angular velocity by Mehmet Pakdemirli

“…An Euler-Bernoulli beam in vertical position rotating about its symmetry axis along its length is considered. The angular velocity is assumed to have small fluctuations about a constant mean velocity. …”
Get full text

Effect of Angular Velocity on Frictional Contact Characteristics of the V-belt Transmission System by Liu Wenying

“…The finite element model of the V-belt transmission system is established,and the friction and contact characteristic of the V-belt transmission system under the condition of different angular velocity,friction coefficient is analyzed,the effect of frictional contact characteristics of the V-belt transmission system under the condition of different angular velocity,friction coefficient is studied.The results show that with angular velocity increasing,the contact force between the belt and pulley decreases;with contact degree increasing,the contact force between the belt and pulley increased;with friction factor increasing,the friction angle of the contact point decreases;with contact degree increasing,the friction angle of the contact point increased,and reached the maximum at the contact point out;from outer to inner,the belt and pulley contact stress and friction angle are different in different node along the radial direction,but both trends are basically identical.…”
Get full text

Modeling of kinematic characteristics of the line of sight of a mobile antenna of a spacecraft when it is pointed at an information reception point by Yury N. Gorelov, Lubov V. Kurganskaya

Subjects: Get full text

Comparative Analysis of 2-Point Jump Shot and Free Throw Kinematics in High- and Low-Level U18 Male Basketball Players by Varvara Botsi, Dimitrios I. Bourdas, Antonios K. Travlos, Panteleimon Bakirtzoglou, Dimitrios C. Gofas, Ioannis E. Ktistakis, Emmanouil Zacharakis

Get full text

The radiation from ultrafast point dipoles, moving uniformly near chiral media by V. N. Kadantsev

Get full text

Velocity field of image points in satellite imagery of planet’s surface by V. Ya. Gecha, M. Yu. Zhilenev, V. B. Fyodorov, D. A. Khrychev, Yu. I. Hudak, A. V. Shatina

“…The formula describes the velocity as a function of the point coordinates in the image fixation plane, the focal length of the imaging camera, the orbital parameters of the satellite, the angular velocity of the planet’s rotation, the coordinates of the satellite’s true anomaly in the orbit, the orientation angles of the imaging camera relative to the orbit, and the angular velocity of the camera. …”
Get full text

A Review of Sensing Strategies for Microwave Sensors Based on Metamaterial-Inspired Resonators: Dielectric Characterization, Displacement, and Angular Velocity Measurements for Hea... by Lijuan Su, Javier Mata-Contreras, Paris Vélez, Ferran Martín

Get full text

Uncovering the hidden mechanics of upper body rotations in tennis serves using wearable sensors on Dutch professional players by B. van Trigt, B. van Trigt, E. Faneker, E. Faneker, A. J. R. Leenen, A. E. Hoekstra, M. J. M. Hoozemans

“…BackgroundIt is assumed that the tennis serve is performed according to the kinetic chain principle in which a proximal-to-distal sequence in peak angular velocities of subsequent body segments can be observed to reach high end point ball velocities. …”
Get full text

Reduction of harmonic distortion in electromagnetic torque of a single-phase reluctance motor using a multilevel neutral-point-clamped DC-AC converter by José M. Campos-Salazar, Roya Rafiezadeh, Juan L. Aguayo-Lazcano, Constanza Márquez

Get full text

Versatile Gyroinclinometer Based on a Single Axis Angular Rate Sensor by Ya. I. Binder, I. A. Khazov

“…The fundamental parameter is adaptability to the trajectory, in other words, equal accuracy in the operating range of zenith angles, which determines the choice of orientation of the angular velocity sensors (ARS) with incomplete (< 3) number of their axis. …”
Get full text

RESEARCH ON FLASH TEMPERATURE OF CONSTANTLY NO CLEARANCE PRECISION STEEL BALL EQUAL-SPEED TRANSMISSION by XIA JingQi, AN ZiJun, JIANG Wei

Get full text

Wind Turbines Around Cut-In Speed: Startup Optimization and Behavior Analysis Reported to MPP by Cristian Paul Chioncel, Elisabeta Spunei, Gelu-Ovidiu Tirian

Get full text

Angular distribution dependence of W migration on the ITER divertor from ERO2.0 simulations by F. Chang, D. Nishijima, M.I. Patino, M.J. Baldwin, J. Romazanov, W. Möller, G.R. Tynan

“…Using unidirectional angular distributions, it is demonstrated that, while the migration of W ions is restricted by the field lines and thus not sensitive to the angular distribution, the migration of neutral W atoms is determined by the direction of their initial velocity due to the line-of-sight redeposition mechanism. …”
Get full text

Position and velocity controls in children and adults during a wrist tracking task by Jihun Kim, Jongho Lee, Jaehyo Kim

“…To identify those critical points, we conducted a wrist tracking task and examined position and velocity controls in children and adults. …”
Get full text

Mathematical modeling of velocity and accelerations fields of image motion in the optical equipment of the Earth remote sensing satellite by S. Yu. Gorchakov

“…The work sets out to develop a mathematical model for determining the dependencies between the state vector of the satellite, the state vector of the point being imaged on the Earth’s surface, and the distribution fields of the velocity vectors and accelerations of the motion of the image along the focal plane of the optoelectronic payload.Methods. …”
Get full text

A METHOD OF SUPERIMPOSED TRIANGULATIONS FOR CALCULATION OF VELOCITY GRADIENT OF HORIZONTAL MOVEMENTS: APPLICATION TO THE CENTRAL ASIAN GPS NETWORK by Alexander V. Zubovich, Shamil A. Mukhamediev

“…Thus, for each point we estimate spin tensor W, which defines angular velocity ω, and components of horizontal strain rate tensor E. …”
Get full text

A Radar-Based Concept for Simultaneous High-Resolution Imaging and Pixel-Wise Velocity Analysis for Tracking Human Motion by Johanna Braunig, Simon Heinrich, Birte Coppers, Christoph Kammel, Vanessa Wirth, Marc Stamminger, Sigrid Leyendecker, Anna-Maria Liphardt, Ingrid Ullmann, Martin Vossiek

“…The high angular resolution of the velocity measurement enables the tracking of the entire illuminated body shell, extending the range of future applications of radar-based motion analysis.…”
Get full text

Characteristic points of roll contact curves of a two-roll module by Khalturaev Farkhod, Buriev Eshmurod, Nurmanov Sarvar, Mazhidov Samariddin

“…Calculation formulas for finding characteristic angles that determine characteristic points of roll contact curves are obtained. It is established that external forces acting on the roll, the angular velocity of the roll, the feed rate of the material being processed, the friction coefficient, and the geometric parameters of the material and roll affect the values of the angles separating the no-slip zones from the slip zones. …”
Get full text

Sharp bounds of logarithmic coefficient problems for functions with respect to symmetric points by N. H. Mohammed

“…A function $f\in\mathcal{A}$ is starlike with respect to symmetric points in $\mathbb{D}$ if for every $r$ close to $1,$ $r < 1$ and every $z_0$ on $|z| = r$ the angular velocity of $f(z)$ about $f(-z_0)$ is positive at $z = z_0$ as $z$ traverses the circle $|z| = r$ in the positive direction. …”
Get full text

Ballistic Fitting Impact Point Prediction Based on Improved Crayfish Optimization Algorithm by Baolu Yang, Liangming Wang, Jian Fu

“…It applies the four-degree-of-freedom ballistic model to predict the landing point. First, the roll angular velocity is calculated based on the geomagnetic data, after which the radar real-time measurement data are segmentally fitted using the improved crayfish algorithm. …”
Get full text