We treat Nelson’s Hamiltonian HN(κ) under the infrared singularity condition [Ar, (3.14)]. HN(κ) describes a system of a quantum particle moving on the 3-dimensional Euclidean space R3 under the influence of an external potential V and interacting with a massless scalar Bose field. Betz et al. showed in [BHLMS, (6.7)] that soft photon number for Nelson’s Hamiltonian with external potentials in ...

In this paper, a study on the characteristics and the reduction methods of ground vibration due to the tilting train travelling in the conventional line is carried out. The load transmitted into the ground is computed considering the interaction between the tilting car and the line. This load is then applied in the numerical model for the analysis of ground vibration due to the travelling tilti...

The aim of this study was to determine the effects that soft tissue motion has on ground reaction forces, joint torques and joint reaction forces in drop landings. To this end a four body-segment wobbling mass model was developed to reproduce the vertical ground reaction force curve for the first 100 ms of landing. Particular attention was paid to the passive impact phase, while selecting most ...

Some living beings both on ground and in water can move by forming traveling waves along their bodies, therefore the mechanisms using the traveling waves have the amphibious possibility . Several robots have been developed using the mechanisms, but there are no amphibious robots . In this study, our goal is development of a bio-mimetic soft cord robot which can move on ground and in water. Firs...

The aim of this study was to determine the effects that soft tissue motion has on ground reaction forces, joint torques and joint reaction forces in drop landings. To this end a four body-segment wobbling mass model was developed to reproduce the vertical ground reaction force curve for the first 100 ms of landing. Particular attention was paid to the passive impact phase, while selecting most ...

it is well-known that the behavior of soil-structure systems can be well described using a limited number of non-dimensional parameters. this is the outcome of researches based on the premise that the foundation is bonded to the ground. here, it is shown the concept can be extended to systems with foundation uplift. a set of non-dimensional parameters are introduced which controls the main feat...