We present an experimental measurement of the cooperative Lamb shift and the Lorentz shift using a nanothickness atomic vapor layer with tunable thickness and atomic density. The cooperative Lamb shift arises due to the exchange of virtual photons between identical atoms. The interference between the forward and backward propagating virtual fields is confirmed by the thickness dependence of the...

This paper develops a technique for the design of haptic systems that guarantees the absence of oscillations. Valid components of the haptic system are general devices, virtual couplings and virtual environments, linear or nonlinear, however the current work focuses on linear components. Once developed, the method will be applied to a haptic system to investigate stability conditions for passiv...

A novel robust adaptive controller is presented for a wide class of strict feedback uncertain nonlinear system with unknown virtual control coefficients under bounded exogenous disturbances. Combined Nussbaum gain with the backstepping technique, the proposed design algorithm, which does not require a priori knowledge of the signs of the unknown virtual control coefficients, is proved to be abl...

Current Mixed Reality experiences focus primarily on training, design and entertainment. This paper presents a very different application, scientific virtualization and its use in informal education. Specifically, we describe a case study that extends an existing museum dinosaur exhibit to include an encounter with ancient sea life. The real world assets and environment are augmented and, in so...

the current research tries to offer a conceptual model in order to create trust among people for choosing virtual universities. to this end, the conceptual model of research has been designed with nine factors. the relationship among factors tested by using statistical methods such as factor analysis and path analysis. in the end, five components were established from among the affecting factor...

In this contribution, we introduce a hybrid model for virtual sensing applications which combines frequency response function with Long Short-Term Memory network. It estimates the behavior of non-linear dynamic systems multiple input and output channels by generating predictions on short subsequences signals recombining them using windowing technique. The approach is tested an experimental data...