Search results for "system dynamic"

Dynamic Modeling, Energy Analysis, and Path Planning of Spherical Robots on Uneven Terrains

2020

Spherical robots are generally comprised of a spherical shell and an internal actuation unit. These robots have a variety of applications ranging from search and rescue to agriculture. Although one of the main advantages of spherical robots is their capability to operate on uneven surfaces, energy analysis and path planning of such systems have been studied only for flat terrains. This work introduces a novel approach to evaluate the dynamic equations, energy consumption, and separation analysis of these robots rolling on uneven terrains. The presented dynamics modeling, separation analysis, and energy analysis allow us to implement path planning algorithms to find an optimal path. One of t…

Applying System Dynamics Modelling to Strategic Management: A Literature Review

2016

System dynamics (SD) has been proved to be a useful methodology to support both understanding and learning processes of complex systems and phenomena. Since its origin, SD has been successfully applied to many different fields of studies (e.g. climate change, physics, engineering, environmental sciences, economics, management, etc.). Among these, strategic management (SM) has a particular relevance as testified by several streams of research that originate from the combination between SD modelling and SM. The aim of this paper is to explore and discuss the theoretical and empirical development of SD in the SM field through a systematic analysis of the literature in order to highlight the ma…

Proper Incentives for Proper IT Security Management _ A System Dynamics Approach

2017

Understanding the Importance of Proper Incentives for Critical Infrastructures Management – How System Dynamics Can Help

2016

International audience; Computer and information systems are now at the core of numerous critical infrastructures. However, their security management is by far not a trivial issue. Further, these systems, by their very nature, belong to the domain of complex systems, where system dynamics (SD) is an established method, which aims at modelling such systems, their analysis and understanding. Further, on this basis it enables simulation of various policies to properly manage complex systems. More precisely, through understanding of the basic elements of the whole mosaic and their interplay, proper incentives can be tested. And this is important, because proper incentives can lead to the desire…

An exploration of digital ride-hailing multisided platforms' market dynamics: empirical evidence from the Uber case study

2020

PurposeThe purpose of this paper is to experiment a dynamic performance management (DPM) approach to explore and assess the business dynamics of digital ride-hailing platforms with a focus on both supply and demand sides, and related interplays.Design/methodology/approachThe research adopts the DPM framework supported by simulation-based experimentations for developing a systemic case interpretation of Uber Inc. and its specific business complexity.FindingsThe emerging scenario analysis reveals that changes in the commission percentage for drivers and cutting prices for customers (car hailers) by competitors have significant impacts on the car-hailing industry.Originality/valueDPM and assoc…

System Dynamics in the Predictive Analytics of Container Freight Rates

2021

This study proposes a two-tier cross-validation and backtesting procedure, including expanding and rolling-window test metrics in predictive analytics of container freight rates by utilizing the system dynamics approach. The study utilized system dynamics to represent the nonlinear complex structure of container freight rates for predictive analytics and performed univariate and multivariate time-series analysis as benchmarks of the conventional approach. In particular, the China containerized freight index (CCFI) has been investigated through various parametric methodologies (both conventional time-series and system dynamics approaches). This study follows a strict validation process cons…

Exact non-Markovian dynamics of Gaussian quantum channels: Finite-time and asymptotic regimes

2018

We investigate the Markovian and non-Markovian dynamics of Gaussian quantum channels, exploiting a recently introduced necessary and sufficient criterion and the ensuing measure of non-Markovianity based on the violation of the divisibility property of the dynamical map. We compare the paradigmatic instances of Quantum Brownian motion (QBM) and Pure Damping (PD) channels, and for the former we find that the exact dynamical evolution is always non-Markovian in the finite-time as well as in the asymptotic regimes, for any nonvanishing value of the non-Markovianity parameter. If one resorts to the rotating wave approximated (RWA) form of the QBM, that neglects the anomalous diffusion contribut…

Enhancing performance management and sustainable organizational growth through system-dynamics modelling

2012

Organizational growth and performance management provide two important research topics for both enterprises and public sector organizations. Improving performance levels, or at least keeping them stable over time, is a hot topic not only for business executives and entrepreneurs, but also for managers and policy makers in public and non-profit institutions. How best to design Planning & Control (P&C) systems to support organizational performance management and assessment in a sustainability perspective? This paper illustrates the need for a methodological framework that would link system dynamics to P&C systems so as to support decision-makers in managing organizational performance, as well…

Innovating business processes in public administrations: towards a systemic approach

2020

PurposeThe purpose of this paper is to study the credit collection process in public administrations in order to develop a conceptual model which goes beyond the traditional logic of linearity, adopting system thinking approaches.Design/methodology/approachThis study analyses the case of an Italian local government-owned enterprise. Data collection through semi-structured interviews and document analysis has enabled the development of propositions, the identification of systemic variables, and the development of an explanatory modeling process based on the system dynamics approach.FindingsThis paper shows that public administrations can effectively involve external actors, especially citize…

CONFLICT DYNAMICS IN HEALTHCARE SERVICES: AN EXPERIMENTAL STUDY USING THE SYSTEM DYNAMICS METHODOLOGY

Σκοπός Η μελέτη αυτή χρησιμοποιεί τη συστημική προσέγγιση για να διερευνήσει τη δυναμική της μάθησης και του αρνητικού συναισθήματος στις συγκρούσεις μεταξύ εργαζομένων στο χώρο της υγείας. Η δυναμική μας υπόθεση ήταν ότι η αλληλεπίδραση μεταξύ των επιπέδων σύγκρουσης, πληροφορίας/μάθησης και αρνητικών συναισθημάτων που συσσωρεύονται στο χώρο εργασίας ως παραπροϊόντα της σύγκρουσης προκαλούν ενδογενώς την διακύμανση (ταλαντώσεις) των επιπέδων σύγκρουσης. Υλικό-Μέθοδος Πραγματοποιήθηκε αρχικά μια συστηματική ανασκόπηση της βιβλιογραφίας και εντοπίσθηκαν 2 προβληματικά πρότυπα εξέλιξης των εργασιακών συγκρούσεων με την πάροδο του χρόνου (Group Disintegration, Groupthink) και ένα "επιθυμητό" π…