We give a more general derivation of the particle velocity and acceleration used in the numerical wave model of Grilli et al. (Int. J. Numer. Meth. Fluids 2001; 35:829–867), by expressing these quantities in a local orthogonal co-ordinate system. Computations of solitary waves propagating and breaking over a sloping bottom show that the new formulation gives better results than the former one i...

We study the behavior of scattering amplitudes in the perturbative Regge region, s ≫ κ 2 ⊥ ≫ µ 2 had , (1) with a large energy squared s and transverse momenta of exchanged particles κ ⊥ much smaller but large enough compared to the hadron mass scale µ had to allow for perturbative expansion. This asymptotics determines the behaviour of structure functions at small x or of two-jet events with a...

In this chapter we will highlight our experimental studies on natural human walking analysis and introduce a biologically inspired design for simple bipedal locomotion system of humanoid robots. Inspiration comes directly from human walking analysis and human muscles mechanism and control. A hybrid algorithm for walking gaits generation is then proposed as an innovative alternative to classical...

A novel n(4-SPS+SP) serial-parallel manipulator (S-PM) formed by n 4-SPS+SP PMs with four degrees of freedom (DOF) connected in series is proposed in this paper. The kinematics , statics and stiffness modeJ of this seriaJ-PM is established. First , the forward kinematics of 4-SPS十SP (spherical jo口比-prismatic joint-revoJute十spherical joint-prismatic joint) PM is d 由er引l口附飞 SPS+SP) S-PM i 比s s 民t...

Background: Lumbar motion analysis is used as a clinical method in the diagnosis and treatment of low back pain (LBP). So far, no studies have shown if manipulating the sacroiliac joint (SIJ) will change spinal kinematics.Objective: The main objectives of this study were to investigate the effects of SIJ manipulation on the lumbar kinematics in subjects with innominate rotation and to compare l...

We study a system containing many particles of identical kinematics with a zero range interaction that scatters one from the other, and with the possible exchange of an attribute. Taking an initial condition in which the attribute is asymmetrically distributed in the regions of momentum space occupied by the particles, we study the rate at which it becomes uniformly distributed, through collisi...

We present the general formalism required to derive generalized parton distributions within a convolution model where the bare nucleon is dressed by its virtual meson cloud. In the one-meson approximation the Fock states of the physical nucleon are expanded in a series involving a bare nucleon and two-particle, meson-baryon, states. The baryon is assumed here to be either a nucleon or a ∆ descr...

The central densities of dark matter (DM) halos are much lower than predicted in cold DM models of structure formation. Confirmation that they have cores with a finite central density would allow us to rule out many popular types of collisionless particle as candidates for DM. Any model that leads to cusped halos (such as cold DM) is already facing serious difficulties on small scales and hot D...

The EXL experiment as a part of future FAIR facility [1] will provide the means for studying many physics phenomena in unstable exotic nuclei. Reactions will be done in inverse kinematics using new storage-ring techniques and a universal detector system providing high resolution and large solid angle coverage for kinematically complete measurements. Our work focuses on prototyping and testing D...

Berends-Giele currents are fundamental building blocks for on-shell amplitudes in non-abelian gauge theory. We present a novel procedure to construct them using the Bern-Kosower formalism one-loop gluon amplitudes. Applying pinch of that suitable special case naturally obtained terms multi-particle fields and obeying colour-kinematics duality. As feedback we outline how polarisations field-stre...