Search results for " Dynamic"

Addressing Patients Mobility through a Dynamic Performance Management perspective: the case of Sicily

Al giorno d'oggi molte regioni italiane sperimentano il fenomeno della mobilità sanitaria passiva, consistente nella tendenza dei loro residenti a rivolgersi ad altri sistemi sanitari regionali, spesso caratterizzati da miglior reputazione, per ricevere assistenza sanitaria. Poiché il Servizio Sanitario Italiano (SSN) è pubblico e regionalizzato, ogni governo regionale ha la responsabilità di prestare assistenza sanitaria ai propri residenti, garantendo al contempo ad ogni cittadino la libertà di essere curato fuori dalla propria giurisdizione, e compensando le regioni di destinazione per i servizi sanitari resi ai non residenti. Nonostante tale diritto di scelta sia un punto di forza del S…

A dynamic performance management approach to support local strategic planning

2015

In spite of efforts devoted in the last decades to local strategic planning, such field of research and practice has been frequently characterized by a lack of implementation. We argue here that this phenomenon is due to the limitations of the static and linear approach to local strategic planning in fostering the development of common shared view among policy makers on the relevant system's structure and behavior. By means of a case-study, we illustrate how an approach based on system dynamics modeling applied to Performance Management can be useful to overcome such weaknesses. The proposed approach enhances a better understanding of the causes and effects related to adopted policies, unde…

Assessing the Reduction Strategies of the Italian Measles Outbreaks through Dynamic Performance Management (DPM) approach

The Dynamics of the Organizational Culture in a Municipality

2013

Lack of Good Governance or hazard of consumers e-Health? Evidence through a dynamic outcome based-performance in the Italian healthcare sector about …

This research aims to analyse the management of the health policies to contain the measles outbreaks in Italy. In particular, this study wants to find out what are the key factors that led to the measles outbreak of 2017 and its previous cyclical trend, analysing the impact of ehealth strategy in the management of the epidemics. Understanding the complexity of this issue will help to evaluate the actual policies of the Italian Ministry of Healthcare and to steer the policy-makers to frame sustainable policies to manage the risk of a measles outbreak. The thesis is structured in four chapters. The first chapter, through a literature review, discusses the evolution of the management of epidem…

A System Dynamics approach to improve clinical risk management effectiveness in an italian hospital ward: a case study.

Anomaly detection approach to keystroke dynamics based user authentication

2017

Keystroke dynamics is one of the authentication mechanisms which uses natural typing pattern of a user for identification. In this work, we introduced Dependence Clustering based approach to user authentication using keystroke dynamics. In addition, we applied a k-NN-based approach that demonstrated strong results. Most of the existing approaches use only genuine users data for training and validation. We designed a cross validation procedure with artificially generated impostor samples that improves the learning process yet allows fair comparison to previous works. We evaluated the methods using the CMU keystroke dynamics benchmark dataset. Both proposed approaches outperformed the previou…

Fractal dynamics in chaotic quantum transport

2013

Despite several experiments on chaotic quantum transport in two-dimensional systems such as semiconductor quantum dots, corresponding quantum simulations within a real-space model have been out of reach so far. Here we carry out quantum transport calculations in real space and real time for a two-dimensional stadium cavity that shows chaotic dynamics. By applying a large set of magnetic fields we obtain a complete picture of magnetoconductance that indicates fractal scaling. In the calculations of the fractality we use detrended fluctuation analysis -- a widely used method in time series analysis -- and show its usefulness in the interpretation of the conductance curves. Comparison with a s…

Force Distribution Analysis of Mechanochemically Reactive Dimethylcyclobutene

2013

Internal molecular forces can guide chemical reactions, yet are not straightforwardly accessible within a quantum mechanical description of the reacting molecules. Here, we present a force-matching force distribution analysis (FM-FDA) to analyze internal forces in molecules. We simulated the ring opening of trans-3,4-dimethylcyclobutene (tDCB) with on-the-fly semiempirical molecular dynamics. The self-consistent density functional tight binding (SCC-DFTB) method accurately described the force-dependent ring-opening kinetics of tDCB, showing quantitative agreement with both experimental and computational data at higher levels. Mechanical force was applied in two different ways, namely, exter…

Synchronization of hidden chaotic attractors on the example of radiophysical oscillators

2017

In the present paper we consider the problem of synchronization of hidden and self-excited attractors in the context of application to a system of secure communication. The system of two coupled Chua models was studied. Complete synchronization was observed as for self-excited, as hidden attractors. Beside it for hidden attractors some special type of dynamic was revealed.