Search results for " system dynamic"

Building a State’s Global Competitive Advantage by Improving Its Finances: A System Dynamic Model Tailored for the Italian State

2014

The present study analyzes and tests a new way to recover economy and public finances in time of crisis. An exclusive focus on State financial short-term stability risks to undermine the economic growth and to erode the social environment, thus it depletes the sources of State finances on the long-term. While a sustainable strategizing focuses on performance drivers that generate these last. Such approach in public strategizing is based on the assumption that State could increase its budgets by improving the organizational and legal framework in which private firms operate, in order to reduce their overhead costs for compliance of rules, and public facilities’ inefficiencies. This improveme…

DESIGNING DYNAMIC PERFORMANCE MANAGEMENT SYSTEMS TO IMPROVE THE COMPETITIVENESS, ECONOMIC AND SOCIAL CAPITAL OF ITALY

2014

Composite quantum collision models

2017

A collision model (CM) is a framework to describe open quantum dynamics. In its {\it memoryless} version, it models the reservoir $\mathcal R$ as consisting of a large collection of elementary ancillas: the dynamics of the open system $\mathcal{S}$ results from successive "collisions" of $\mathcal{S}$ with the ancillas of $\mathcal R$. Here, we present a general formulation of memoryless {\it composite} CMs, where $\mathcal S$ is partitioned into the very open system under study $S$ coupled to one or more auxiliary systems $\{S_i\}$. Their composite dynamics occurs through internal $S$-$\{S_i\}$ collisions interspersed with external ones involving $\{S_i\}$ and the reservoir $\mathcal R$. W…

Landauer’s Principle in Multipartite Open Quantum System Dynamics

2015

We investigate the link between information and thermodynamics embodied by Landauer's principle in the open dynamics of a multipartite quantum system. Such irreversible dynamics is described in terms of a collisional model with a finite temperature reservoir. We demonstrate that Landauer's principle holds, for such a configuration, in a form that involves the flow of heat dissipated into the environment and the rate of change of the entropy of the system. Quite remarkably, such a principle for {\it heat and entropy power} can be explicitly linked to the rate of creation of correlations among the elements of the multipartite system and, in turn, the non-Markovian nature of their reduced evol…

Destination Governance at Stake: Fostering Policy Coordination Among Decision-Makers of a Small Town

2018

This research aims to foster small-town decision-makers’ awareness of policy coordination as a central issue in either implementing collaborative governance and designing tourism development policies. To this end, a System Dynamics-based Interactive Learning Environment (ILE) has been designed with the intent of challenging decision-makers to increase tourism in the small town, while managing trade-offs among individualistic vs. collaborative behaviour. The action research took place in Castelbuono, a small tourism destination in Sicily (Italy). Three major decision-makers were involved: the mayor of the town, the museum’s director, and a restaurant owner. The use of the ILE has enabled dec…

Green Data Centres integration in smart grids: New frontiers for ancillary service provision

2017

Abstract The paper presents a study, conceived within the GEYSER FP7 co-funded European research project, on the ancillary services that Green Data Centres (GDCs) can provide, focusing, in particular, on spinning reserve. More in detail, the main contribution of the paper is to show how GDCs can be involved in the secondary frequency regulation process of a smart distribution grid, for contrasting the disturbing effects of unexpected variation of the energy production. With this aim, a real data centre, owned by Engineering S.p.A., is simulated as connected to the Medium Voltage IEEE 14-bus test grid where some RES-based generators are supposed to exist. Simulations are carried out in order…

Frequency dynamics of power systems with temporally distributed disturbances

2021

Abstract The frequency dynamics and stability of power systems is essentially affected by nature and characteristics of the disturbances occurring in the system. Conventionally, frequency transients are examined assuming a single disturbance applied at a given time. However, actual incidents in the power systems can be generally composed of a temporal sequence of events, and thus characterized by multiple power imbalances of different magnitudes and time offsets. The consideration of the effects of the temporal distribution of power imbalances is important for two main reasons: the impact on the frequency dynamics of the system in terms of frequency metrics such as minimum instantaneous fre…

Designing dynamic performance management systems to foster SME competitiveness according to a sustainable development perspective: empirical evidence…

2015

The role of performance management (PM) systems has become crucial for steering small-medium enterprises (SMEs) to successfully compete during the ongoing critical economic transition. To improve decision-maker strategic learning processes, traditional PM frameworks need to be combined with system dynamics (SD) modelling. This paper shows how to design and use a dynamic performance management (DPM) approach to assess and support SMEs competitiveness according to a sustainable development perspective. The emerging framework is applied to a real case of an Italian small business to analyse the empirical effectiveness of the approach hereby suggested.

Supporting start-up business model design through system dynamics modelling

2017

Purpose The purpose of this paper is to explore how system dynamics (SD) modelling can provide a methodological support to business model (BM) design with the intent to better communicate business strategy and manage performance. Design/methodology/approach After a literature review of the field and an analysis of the strengths and limitations of conventional BM frameworks, the paper illustrates and discusses an approach that combines such a framework with SD modelling. A single-case study design was selected to explore the implications and limitations of using this combined approach to business modelling. Findings The methodological support provided by SD to BM design may effectively impr…

Supporting Small Medium Enterprises planning through the use of a step-by-step System Dynamics model building process

2011

This paper aims to support small medium enterprises (SMEs) in business planning through the use of system dynamics models. In particular, it has been hypothesized that through the use of a step-by-step system dynamics model building process SMEs’ entrepreneurs can better understand the net of cause-and-effect relationships underlying company financial and non-financial results. Such an approach also enables decision makers to improve their understanding about the figures portrayed in a balance sheet. In order to reach such a goal, this study has been carried out through the use of a case-study. The small company investigated is a leather handcraft operating in Indonesia. The paper makes e…