Search results for " system dynamics"

Effects of complex movements on the brain as a result of increased decision-making

2019

Non-linearity is considered to be an essential property of complex systems. The associated high sensitivity of the result on the constraints leads to fundamental problems of a system description based on variables selected in the reductionist tradition. The attempt to compensate the problems by averaging data leads to the neglect of the individual and the moment. However, both is of enormous importance for effective therapy, training, and learning. The theory of differential learning suggests an alternative approach to dealing with these problems. With constantly changing complex whole-body movements, extensive decisions are demanded from the learner, which lead to brain states through an o…

REGIONAL DEVELOPMENT PLANNING STRATEGY: DESIGNING A DYNAMIC INTEGRATED MODEL FRAMEWORK FOR THE SICILY REGION

Over the past decades, Sicily Region has experienced periods of stagnation, recession and sporadic slow economic growth, lagging always behind the national performance. As a consequence of globalization and deregulation, the relevance of regions in national economies has changed considerably in the last decades. Recognizing the importance of the Sicily region in the development process at national level, the purpose of the research is to further explore the dynamics governing the behaviour of the regional economic system. The goal is achieved by the use of simulation modelling: a model framework for the regional economic system is designed by integrating the System Dynamics (SD) methodology…

Fostering Entrepreneurs’ Capabilities to Outline Sustainable Strategies in ‘Stunted’ SMEs through Modelling and Simulation: a Dynamic Resource Based …

The literature recognises the phenomenon of ‘dwarf’ or ‘stunted’ small and micro firms (in Italian nanismo aziendale) and that they might represent potential lost opportunities for owners and the local economy. Based on a field survey conducted by Bianchi et al. (2003) and the analysis previously developed by the authors of this paper in sketching a simple ‘insight’ model to simulate the behaviour of such firms (Bianchi & Winch, 2005), this work aims to show further research developments in the effort to better understand the business dwarfism phenomenon. A system dynamics model replicating the basic no-growth, cyclical behaviour attributed to “stunted” SMEs is firstly analysed. Alterna…

The Effect of Retirement Behaviour on Retirees' Quality of Life

2010

A DYNAMIC PERFORMANCE MANAGEMENT APPROACH TO FOSTER MUNICIPAL POLICE STRATEGIES IN PALERMO TO CONTAIN SPEEDING AND DRUNK DRIVING

Road related fatalities kill 1,25 million people every year around the world and rank as the ninth cause of death according to some recent statistics by the WHO. Actions to reduce this phenomenon have been taken, at different institutional levels, with promising results, particularly in western societies, where the magnitude of such occurrences has been almost halved in the last decade. Nevertheless the level of attention, with regard to road safety, will have to be kept high if a further reduction of this phenomenon is to be reached. Traditional road safety-related approaches mainly focus on prevention through the constant improvement of vehicles’ safety devices and the rationalization of …

A novel process-based model of microbial growth: self-inhibition in Saccharomyces cerevisiae aerobic fed-batch cultures

2015

Microbial population dynamics in bioreactors depend on both nutrients availability and changes in the growth environment. Research is still ongoing on the optimization of bioreactor yields focusing on the increase of the maximum achievable cell density. A new process-based model is proposed to describe the aerobic growth of Saccharomyces cerevisiae cultured on glucose as carbon and energy source. The model considers the main metabolic routes of glucose assimilation (fermentation to ethanol and respiration) and the occurrence of inhibition due to the accumulation of both ethanol and other self-produced toxic compounds in the medium. Model simulations reproduced data from classic and new expe…

A Comparison between RMS and EMT Grid-Forming Implementations in MATLAB/Simscape for Smart Grids Dynamics

2022

The article presents a comparison between phasor RMS and EMT models for grid-forming converters. The specific aspects related to the implementation in Simscape Electrical of MATLAB/Simulink are discussed for both RMS and EMT time-domains. The comparison between the different implementations is performed with the simulation of two widely studied grid-forming schemes, the virtual synchronous machine and the power-synchronization control. The simulation-based comparison examines transient phenomena with different characteristics and time scales, including frequency transients, phase jumps and short-circuit events. Specific indications regarding limitations and suitability of grid-forming model…

A nonlinear System Model of Retirement Behavior in Italy

2010

Turning a business idea into a real business through an entrepreneurial learning approach based on dynamic start-up business model simulators

2017

In this paper we argue that the use of System Dynamics modelling applied to Business Model design and representation may result in an entrepreneurial learning approach to support potential entrepreneurs in exploring and learn how a business operates and reacts according to alternative strategic choices. As such, a Dynamic Business Modelling approach provides useful insights to start-up entrepreneurs learning processes by capturing and explaining how critical Business Model elements interact to produce enduring competitive advantages over time.

Conceptualizing Innovative Business Planning Frameworks to Improving New Venture Strategy Communication and Performance. A Preliminary Analysis of th…

2017

Business planning is a fundamental activity that start-up entrepreneurs are called to carry out in order to attract new investors, business angels, and venture capitalists, to subsidize a new business idea. The key-tool universally used to communicate a new venture strategy to these players, as well as to other stakeholders, is the business plan, i.e. a framework including the business idea description, the product(s), the market sector(s), the core-assets, the budget, the business sustainability and profitability, and so on. As such, a major success factor for drawing up a business plan is the capability to clearly and synthetically communicate the business strategy. Among the others, one …