scholarly journals Agent-Based Modeling (ABM): Support for Emphasizing the Air Transport Infrastructure Dependence of Space Systems

2019 ◽  
Vol 11 (19) ◽  
pp. 5331 ◽  
Author(s):  
Olga Bucovetchi ◽  
Alexandru Georgescu ◽  
Dorel Badea ◽  
Radu D. Stanciu

Critical infrastructure is foundational for the prosperity and quality of life in any society. By definition, its destruction or disruption would cause severe damage and possibly loss of life. Within this understanding, space systems are a new category of critical infrastructure, emerging as an enabler of new applications which are critical within the wider system-of-systems. This paper presents the results of a modeling exercise validating the proof of concept regarding the idea of the global, air-transport-critical infrastructure’s dependence on space systems. By using an open-source application, the authors constructed a complex system made up of 18 airports for which six scenarios were modeled that represent either the exposure to specific space phenomena or the effects of a partial or total critical space infrastructure disruption. Despite the limitations and assumptions made in the building of this model, its results suggest that a significant impact would result from disruptive events, with the potential for cascading disruptions within the system, beyond the system under analysis, and into the wider system-of-systems. Tools such as this model are useful to policy- and decision-makers, not only to protect existing, critical infrastructures, but also to adequately source future risks, vulnerabilities, and threats, and design and build new infrastructures.

2009 ◽  
Vol 19 (1) ◽  
pp. 1581-1590 ◽  
Author(s):  
John C. Hsu ◽  
John R. Clymer ◽  
Jose Garcia ◽  
Efrain Gonzalez

2017 ◽  
Vol 11 (4) ◽  
pp. 2084-2095 ◽  
Author(s):  
Jean-Baptiste Soyez ◽  
Gildas Morvan ◽  
Rochdi Merzouki ◽  
Daniel Dupont

2014 ◽  
Vol 28 ◽  
pp. 404-411 ◽  
Author(s):  
Louis Pape ◽  
Siddhartha Agarwal ◽  
Kristin Giammarco ◽  
Cihan Dagli

2015 ◽  
Vol 44 ◽  
pp. 363-372 ◽  
Author(s):  
W. Clifton Baldwin ◽  
Brian Sauser ◽  
Robert Cloutier

Author(s):  
Corinna Köpke ◽  
Kushal Srivastava ◽  
Louis König ◽  
Natalie Miller ◽  
Mirjam Fehling-Kaschek ◽  
...  

AbstractThe effective protection of critical infrastructure against cyber and physical security threats involves many different steps from initially the identification of risks to finally the implementation of counter measures in the infrastructure. To derive counter measures and to come to intelligent decisions facing the identified risks, the impact calculation plays a central role. The impact of a specific threat can propagate through the systems of the infrastructure and thus needs to be analysed carefully. In this paper, the role of impact propagation of cyber-physical threats for infrastructure protection is discussed, exemplified for airport systems. In the ongoing EU-H2020 project SATIE (Security of Air Transport Infrastructure of Europe) a toolkit is developed containing two tools for impact propagation, namely the Business Impact Assessment (BIA) and the Impact Propagation Simulation (IPS). Both tools are described and for a small test case the propagation of a cyber threat and the transformation into a physical threat is demonstrated in a network representation as well as an agent-based model of the airport’s systems employing the IPS.


2018 ◽  
Vol 7 (4.19) ◽  
pp. 801
Author(s):  
Saad Talib Hasson ◽  
Rafalyasen Al-asadi

Emergency department (ED) represents a crucial and suitable for most patients' emergency cases at any time. It is extremely associated health services dedicated mostly to treat the arriving patient's with uncertain illnesses and without previousappointment.Patient flow sequences representa very complex processdue to the different uncertain requirements and different possible paths that patients may guide to complete their treatment.  An Agent Based Modeling (ABM) approach is implemented and appliedin an emergency department in Hilla hospital as a case studyin this paper.Thisstudy combinesABM with queuing and discrete events simulationas an evaluation process for the patients flow behavior and staff utilization in an emergency department. ABM is a flexible tool that can be created to imitatecertain complex environment. It can offer certain level of supports for managers to consider the relative influence of current or suggested strategies. It provides a suitablesituation in studying andpredicting the interactions and behavior's in ED operations. This study aims to maximize the patient's throughput, minimize their waitingtimesand optimize the resources utilization. The methodology that followed in this study is to estimate the optimal required number of ED staff's, which involves doctors, triage nurses, and receptionist, lab and x-raytechnician. Patients were modeled as agents having an ability to interact with others and with staffs and to select whether to wait and stay in the system or to leave at any stage of treatment. The simulation results is implemented according to the real collected data and the managers experiences about the averages of arrival and service rates with flow sequence probabilities. Waiting and idle times for the patients and staffs showed a good indication about the quality of services.   


Author(s):  
Liu Yang ◽  
Lufeng Zhang ◽  
Andreas Philippopoulos-Mihalopoulos ◽  
Emile J. L. Chappin ◽  
Koen H. van Dam

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