The multi-Regge effective action is derived directly from the linearized gravity action. After excluding the redundant field components we separate the fields into momentum modes and integrate over modes which correspond neither to the kinematics of scattering nor to the one of exchanged particles. The effective vertices of scattering and of particle production are obtained as sums of the contr...

with σ the physical cross section, σ̂ the partonic cross section, φf/hi the parton distribution for parton f in hadron hi, and μF , μR the factorization and renormalization scales, respectively. The perturbatively calculable σ̂ includes soft and virtual corrections from soft-gluon emission and virtual diagrams. These corrections appear as plus distributions and delta functions in σ̂. In single-par...

In this paper, a 4-DOF robotic arm for tool handling in laparoscopic surgery is introduced. The robot provides sufficient force to handle endoscopic tools used for large organ manipulation and is capable of measuring the tool-tissue forces. The RCM constraint is achieved using a spherical mechanism and roll and insertion motions are provided using time pulley and spindle-drive, respectively. Th...

Vertical axis wind turbine blades undergo dynamic stall due to the large 1 angle of attack variation they experience during a turbine rotation. Particle image 2 velocimetry on a pitching and surging airfoil was used to perform time resolved 3 measurements at blade Reynolds numbers near turbine operating conditions of 105. 4 These experiments were compared to simulations performed in the rotatin...

The ground and first excited states in 15F were studied in resonant elastic scattering using the thick sCH4d gas target method in inverse kinematics with a separated 14O beam. An analysis of the excitation functions of the elastic scattering was carried out with the potential model. The quantum numbers 1/2+ (ground state) and 5/2+ (first excited state) were assigned to the lowest two states in ...

The reactions induced by the weakly bound Li projectile interacting with the intermediate mass target Co were investigated. Proton, deuteron and α-particle singles measurements were performed at the near barrier energies Elab = 17.4, 21.5, 25.5 and 29.6 MeV. The main contributions of the different competing mechanisms are discussed. A statistical model analysis, Continuum-Discretized Coupled-Ch...

A rider in a roller coaster lets go of a particle such as a small marble. How far does the marble travel horizontally from the point of release before hitting the ground, assuming the speed of the roller coaster is determined by conservation of mechanical energy starting from the highest hill up which it was pulled? Where should the marble be released along the track if one wishes to maximize t...

Calculations of form factors in different forms of relativistic kinematics are presented. They involve the instant, front and point forms. In the two first cases, different kinematical conditions are considered while in the latter case, both a Dirac-inspired approach and a hyperplane-based one are incorporated in our study. Numerical results are presented for the pion form factors with emphasis...

This study reconsiders the decay of an ordinary particle in bradyons, tachyons and luxons in the field of the relativistic quantum mechanics. Lemke already investigated this from the perspective of covariant kinematics. Since the decay involves both space-like and time-like particles, the study uses the Majorana equation for particles with an arbitrary spin. The equation describes the tachyonic...

In this paper, we apply a statistically rigorous track-before-detect (TBD) method, the Bernoulli particle filter, to actual imagery of resident space objects (RSOs). Robust methods in this realm will lead to better space domain awareness (SDA) while reducing the cost of sensors and optics. We focus on estimating sensor-level kinematics of RSOs for low signal-to-noise ratio (SNR) short-arc obser...