Ferroelectric oxides are of continuing interest in a new generation of electronic devices, such as piezoelectric actuators and nonvolatile memory devices. In general, their application involves manipulation of the polarization of the ferroelectric and the polarization depends sensitively on boundaries and interfaces. Here we study the dynamic interaction during polarization switching of domains...

The potential relevancy of a digital object depends also on the type of the knowledge appropriation understood either as a process of “simple (article or book based) lecture”, or contrarily as an active interaction with a digital knowledge object, i.e. as a more complex global activity composed by and organised via different local cognitive acts implied such as comparing, testing, working activ...

This paper proposes a cognitive model of presence which emphasizes the interaction of top-down and bottom-up processes, and the subsequent creation of temporary representations of an environment in working memory. These temporary representations (which we term constructions) are formations of meaning about the environment, which allow a subject to make inferences and interact in that environmen...

In this paper, a new fractional Riccati equation rational expansion method is proposed to establish new exact solutions for fractional differential equations. For illustrating the validity of this method, we apply it to the nonlinear fractional Sharma-TassoOlever (STO) equation, the nonlinear time fractional biological population model and the nonlinear fractional foam drainage equation. Compar...

In present paper, the Sharma-Tasso-Olever (STO) equation is considered by the Lie symmetry analysis. All of the geometric vector fields to the STO equation are obtained, then the symmetry reductions and exact solutions of the STO equation are investigated. Our results witness that symmetry analysis was very efficient and powerful technique in finding the solutions of the proposed equation.

Attention to human factor in conducting any type of military/security operations is currently an objective of utmost importance in the context of troop training within NATO. To this purpose, a number of serious games were developed, addressing different aspects of cultural awareness and correctness in approaching human beings during a mission. A significant example is “Afghanistan Pre-deploymen...

The Sapienza University Networking framework for underwater Simulation Emulation and real-life Testing (SUNSET) is a toolkit for the implementation and testing of protocols for underwater sensor networks. SUNSET enables a radical new way of performing experimental research on underwater communications. It allows protocol designers and implementors to easily realize their solutions and to evalua...

Existing standards and guidelines for the application of signs and markings are unsuited and inefficient for use on low-volume rural roads (less than 400 A D T ). T o alleviate this inadequacy, several potentially hazardous situations were evaluated to ascertain actual needs for signs and markings as they relate to economy and safety. These evaluations were based on recent research and on proba...

In this paper, the projective Riccati equation method is applied to find exact solutions for fractional partial differential equations in the sense of modified RiemannLiouville derivative. Based on a nonlinear fractional complex transformation, a certain fractional partial differential equation can be turned into another ordinary differential equation of integer order. For illustrating the vali...

When running time-dependent density functional theory (TDDFT) calculations for real-time simulations of non-equilibrium dynamics, the user has a choice of initial Kohn-Sham state, and typically a Slater determinant is used. We explore the impact of this choice on the exchange-correlation potential when the physical system begins in a 50 : 50 superposition of the ground and first-excited state o...