We investigate a mechanism that effectively transports fluids using vibrational motion imposed onto fluid boundary with anisotropy. In our experiment, two asymmetric, sawtooth-like structures are placed facing each other and form a corrugated fluid channel. This channel is then forced to open and close periodically. Under reciprocal motion, fluid fills in the gap during the expansion phase of t...

In laboratory experiments, we compare the performance of short-term and long-term contracts in a two-period supplier–buyer dyad with asymmetric cost information. We find that buyers tend to reject offers if payoff inequality increases from one period next. coin this dynamic form inequity aversion as “ratcheting aversion.” show under contracting, buyer's ratcheting limits supplier's leeway explo...

A long-time dynamic for granular materials arising in the hypoplastic theory of Kolymbas type is investigated. It assumed that hardness allows exponential degradation, which leads to densification material states. The governing system a rate-independent strain under stress control described by implicit differential equations. Its analytical solution arbitrary inhomogeneous coefficients construc...

We investigate the quasistatic mechanical response of soils under cyclic loading using a discrete model of randomly generated convex polygons. This response exhibits a sequence of regimes, each one characterized by a linear accumulation of plastic deformation with the number of cycles. At the grain level, a quasiperiodic ratchetlike behavior is observed at the contacts, which excludes the exist...

the motivation of this paper is to propose such equitable method for ranking all decision making units (dmus) in dynamic data envelopment analysis (ddea) framework. as far as we are aware there is not more studies in dynamic dea literature. what's more, in such cases the best operating unit is important to be sampled for the others in under evaluated time periods. however, in this special conce...