Search results for "System Dynamics"

Enhancing the Collaborative Governance in Post-disaster Reconstruction: A Dynamic Performance Management Approach

2020

The impact of natural disasters on human life was blatantly demonstrated through media reports of recent events such as the Ache tsunami in 2004, Hurricane Katrina in 2005, the Wenchuan Earthquake in 2008 and Tohoku Earthquake and Tsunami in 2010-2011. Rising from the rubbles, our societies strive to learn from the experiences of how to build a better life and avoid future catastrophes. Post-disaster reconstruction (PDR) plays a crucial role in providing a safer and more resilient living environment for people, particularly for those disaster victims. This thesis focused on how implementing a collaborative governance approach in post-disaster reconstruction can offer effective solutions to …

A dynamic simulation approach to frame drivers and implications of corruption practices on firm performance

2014

Corruption is a multifaceted socio-economic phenomenon widely spread - although with different intensity - all around the world. Many studies on corruption have been conducted at a country-level, but relatively little effort has been placed in evaluating its implications, in terms of both financial and competitive performance, at a firm-level. Therefore, this paper aims at exploring the causal relationships underlying the effect of corruption on firm performance in order to show the different scenarios that may emerge from the combination between external (i.e., contextual conditions) and internal (i.e., organizational characteristics) forces that drive corruption. To this end, we adopt a D…

The determinants and barriers of e-Government Adoption in the Municipality of Palermo

2014

La costante innovazione tecnologica fornisce nuovi spunti per la creazione di network efficienti e lo sviluppo di nuovi business. Anche la Pubblica Amministrazione (PA) vuole sfruttare tali opportunità. In particolare, la PA, attraverso l’implementazione di una strategia di e-Government può mirare a una maggiore efficienza, alla riduzione dell’errore umano e delle frodi. Tuttavia, non si tratta di un mero cambiamento di strumenti. Il passaggio a un’Amministrazione Digitale richiede un cambio di approccio manageriale. Partendo dalla somministrazione di un questionario (sul sito istituzionale del Comune di Palermo, 389 risposte utili) che ha confermato la poca consapevolezza dei cittadini rig…

Dynamic Sustainability Assessment Tool: Case Study of Green Biorefineries in Danish Agriculture

2020

In this work, a novel, dynamic sustainability assessment tool is presented and validated in a case study. This tool combines two methods&mdash

MODELING PUBLIC POLICIES ANALYSIS OF LOGISTICS COLLABORATION IN THE PERFORMANCE OF THE AGRICULTURAL SECTOR OF THE POTATO IN COLOMBIA.

2020

The agricultural sector is considered fundamental for the supply of food needs of humanity, given the population growth. According to the Food and Agriculture Organization (FAO), the world population is estimated to be 9 billion people by the year 2050 and where the conditions of climate change can decrease crop yield up to 25%. This triggers greater vulnerability to the neediest population, being the rural sector the one hosting the poorest people. The rural area of Colombia represents 94% of extend the national territory, where 24% of the population lives a scenario of multiple problems that affect the country, such as the armed conflict of more than five decades, the presence of illicit …

Data from: Environmentally-induced noise dampens and reddens with increasing trophic level in a complex food web

2018

Stochastic variability of key abiotic factors including temperature, precipitation and the availability of light and nutrients greatly influences species’ ecological function and evolutionary fate. Despite such influence, ecologists have typically ignored the effect of abiotic stochasticity on the structure and dynamics of ecological networks. Here we help to fill that gap by advancing the theory of how abiotic stochasticity, in the form of environmental noise, affects the population dynamics of species within food webs. We do this by analysing an allometric trophic network model of Lake Constance subjected to positive (red), negative (blue), and non-autocorrelated (white) abiotic temporal …

“Dealing With Patients’ Mobility Issues: An Inter-Institutional Perspective To Analyze The Phenomenon And To Support Sustainable Policy Making In Sic…

2014

Nowadays many Italian policy makers, both at a national and regional level, are devoting a growing attention to the phenomenon of patients’ movements seeking public healthcare treatments out of the territorial jurisdiction. This paper presents the main features of a research project being carried out to analyze the mobility flows of Sicilian patients towards other Italian Regions in order to support the design of sustainable related policies. Such study adopts an inter-institutional perspective as the design of sustainable mobility-related policies requires a coordination effort of the Regional Healthcare Department, the Local Health Authorities and the Healthcare providers. The main outcom…

System Dynamics Models To Support Health Care Companies In Managing Clinical Risk

2011

Clinical risk management has gained an increasing relevance because of the higher monetary and no monetary effects of clinical errors on health care companies' performance. For this reason, different risk management techniques from the industrial sector have been adopted by managers of health care companies in order to reduce the occurrences of errors and their relative impacts. However, these methods, based on a linear and static perspective, do not properly support the health care companies' management in the identification and assessment of policies aimed at improving the clinical risk profile without reducing financial performances. Therefore, it is necessary to adopt a systemic and mul…

Grid-Following and Grid-Forming MODELS in ATP-EMTP for Power Systems Simulation

2022

The paper presents the models of grid-following and grid-forming converters in the software ATP-EMTP for power systems simulation. The models are developed using the MODELS language, they are described in details discussing all issues and aspects related to the implementation, and they are also shared as open source models. The models are validated with a simulation-based approach, comparing the results with the models developed in MATLAB/Simulink and in NEPLAN, considering both the phasor RMS and EMT time domains, and thus performing a comprehensive cross-platform and cross-domain validation. In line with the spirit of the ATP software and community, the models of grid-following and grid-f…

PUBLIC POLICY PLANNING TO ENHANCE THE RESILIENCE OF SOCIO-ECOLOGICAL SYSTEMS TO CLIMATE CHANGE: OPERATIONALIZING RESILIENCE CONCEPTS FROM A DYNAMIC P…

This study outlines a system dynamic based approach to the planning for resilience in food systems to climate change. The processes described and the insights gained are novel in the literature since they focus on describing operational aspects of resilience that can be generalized to multiple contexts and problems. On the one hand, the process described offers an aid for researchers and practitioners operationalizing resilience in public sector settings. Simultaneously, the insights gained from multiple stakeholder discussions and modelling work open new questions regarding the general mechanisms driving resilience in food systems. Climate change is threatening the extent to which social, …