University of Dubrovnik

About: University of Dubrovnik is a education organization based out in Dubrovnik, Croatia. It is known for research contribution in the topics: Population & Tourism. The organization has 351 authors who have published 954 publications receiving 7126 citations. The organization is also known as: University Durbrovnik.

Stability of observations of Partial Differential Equations under uncertain perturbations

Abstract: We demonstrate the stability of observability estimates for solutions to wave and Schrodinger equations subjected to additive perturbations. This work generalises recent averaged observability/control results by allowing for systems consisting of operators of different types. We also consider the simultaneous observability problem by which one tries to estimate the energy of each component of a system under consideration. Our analysis relies on microlocal defect tools, in particular on standard H-measures when the main system dynamic is governed by the wave operator, and parabolic H-measures in the case of the Schrodinger operator.

Multi-agent control in degraded communication environments

Abstract: The goal of this paper is to compute transmission rates and delays that provably stabilize Multi-Agent Systems (MASs) in the presence of disturbances and noise. In other words, given the existing information delay among the agents and the underlying communication topology, we determine rates at which information between the agents need to be exchanged such that the MAS of interest is ℒ p -stable with bias, where this bias accounts for distorted/noisy data. In an effort to consider MASs characterized by sets of equilibrium points, the notions of ℒ p -stability (with bias) and ℒ p -detectability with respect to a set are utilized. Using Lyapunov-Razumikhin type of arguments, we are able to consider delays that are greater than the transmission intervals. The present methodology is applicable to general (not merely to single- and double-integrator) heterogeneous linear agents, directed topologies and output feedback. The computed transmission rates are experimentally verified employing a group of off-the-shelf quadcopters.

The role and importance of private accommodation components: Evidence from urban Mediterranean tourism destination

Abstract: Despite the importance of private tourism accommodation there appears to be little theoretical and empirical research focusing on private accommodation components. The main purpose of this paper, which is carried out through the primary research of tourism supply and demand in the city of Dubrovnik as one of the leading urban tourism destinations in Croatia by using log-linear form of Ordinary Least Squares (OLS) regression, is to sustain that accommodation occupancy rate, as measure of willingness to stay, and price are not determinate by the same components of the private accommodation units. The results show that the accommodation occupancy rate is the real reflection of the tourists' preferences while the price is formed by owners’ intuition. The findings can be used for further conceptual and empirical research into the tourism lodging industry contribution of private accommodation. DOI: 10.5901/mjss.2014.v5n13p0531