Abstract The fatigue process under fretting conditions is characterized by small oscillatory movements due to vibrating or cyclic loads between two surfaces in contact. Two phenomena can arise as a consequence: the surface wear of bodies contact, giving rise so-called wear. second phenomenon concerns crack nucleation contact region, causing reduction strength component subjected loading. This c...

Abstract Purpose The discrete element method (DEM) can be used in agricultural fields such as crop sowing, harvesting, and transportation. Nevertheless, modeling complex crops appropriately shaped particles remains challenging. of the calibration input parameters are important for simulating realistic behaviors using DEM. Methods In this study, particle models representing morphological charact...

A volume conductor model of the spinal cord and surrounding anatomical structures is used to calculate current (and current density) charge per pulse, and maximum charge density per pulse at the contact surface of the electrode in the dorsal epidural space, in the dorsal columns of the spinal cord and in the dorsal roots. The effects of various contact configurations (mono-, bi-, and tripole), ...

This study examines the e!ect of prosodic position on segmental properties of Korean consonants /n, t, t), t*/ along the articulatory parameters peak linguopalatal contact and stop seal duration, and several acoustic parameters. These parameters were compared in initial position in di!erent domains of the Korean prosodic hierarchy. The "rst result is that consonants initial in higher prosodic d...

We present a method to derive contact energy parameters from large sets of proteins. The basic requirement on which our method is based is that for each protein in the database the native contact map has lower energy than all its decoy conformations that are obtained by threading. Only when this condition is satisfied one can use the proposed energy function for fold identification. Such a set ...

This paper uses (linearized) Kalman filters to estimate first-order geometric parameters (i.e., orientation of contact normals and location of contact points) that occur in force-controlled compliant motions. The time variance of these parameters is also estimated. In addition, transitions between contact situations can be monitored. The contact between the manipulated object and its environmen...