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Algorithms for Optimizing Fleet Scheduling of Air Ambulances [article]

Joseph Tassone, Salimur Choudhury
2020 arXiv   pre-print
Proper scheduling of air assets can be the difference between life and death for a patient.  ...  Two methods were developed, one based on neighbourhood search and the other on Tabu search.  ...  Model Scheduling of air ambulances follows predetermined positions, where ambulances are already placed at bases. Time is also a factor as scheduling relies on patients arriving at certain periods.  ... 
arXiv:2002.11710v1 fatcat:urqkvclp2bh3ff4mcifc6olasy

Algorithms for Optimizing Fleet Staging of Air Ambulances [article]

Joseph Tassone, Geoffrey Pond, Salimur Choudhury
2020 arXiv   pre-print
In a disaster situation, air ambulance rapid response will often be the determining factor in patient survival.  ...  A solution implementing base ranking followed by both local and Tabu search-based algorithms was created.  ...  The number of vehicles was predetermined based on known air ambulance fleet sizes and represented in lines 1 and 2.  ... 
arXiv:2001.05291v2 fatcat:2qwksv7osjeedleydhvofbtqty

A Comprehensive Survey on the Ambulance Routing and Location Problems [article]

Joseph Tassone, Salimur Choudhury
2020 arXiv   pre-print
In this research, an extensive literature review was performed on the recent developments of the ambulance routing problem (ARP) and ambulance location problem (ALP).  ...  The contributions of this work are a comprehensive survey of current methodologies, summarized models, and suggested future improvements.  ...  Table 14 : 14 Computation Time for ACO and Tabu Search.  ... 
arXiv:2001.05288v1 fatcat:aqmklf5dlbf3hk5wlxh7nzxf7q

Vehicle Routing Optimisation in Humanitarian Operations: A Survey on Modelling and Optimisation Approaches

Wadi Khalid Anuar, Lai Soon Lee, Stefan Pickl, Hsin-Vonn Seow
2021 Applied Sciences  
Finally, the trend and future outlook of VRP for the suggested humanitarian operations are discussed and highlighted.  ...  The growing field of humanitarian operations is driven by frequent events of disasters seen in the world today.  ...  Conflicts of Interest: The authors declare no conflict of interest. Abbreviations The following abbreviations are used in this manuscript:  ... 
doi:10.3390/app11020667 fatcat:vo7i2wwz7vevvohbzqyn7v72ke

Metaheuristics in the Humanitarian Supply Chain

Francisca Santana Robles, Eva Selene Hernández-Gress, Neil Hernández-Gress, Rafael Granillo Macias
2021 Algorithms  
(71.79%) with genetic algorithms and particle swarm optimization as the most used; and non-metaphor based (28.20%), in which search algorithms are mostly used; it is concluded that, to consider the uncertainty  ...  of the real context, future research should be done in non-deterministic and multi-period problems that integrate pre- and post-disaster stages, that increasingly include problems such as inventory and  ...  Noham and Tzur [65] design a resource distribution network in the event of a disaster; a mathematical model is incorporated and solved through Tabu Search.  ... 
doi:10.3390/a14120364 fatcat:5mfn67l2jbhphh5aha5hbjqxii

Becoming Visible: Why We Should be Better Communicators Now

Alice Raffaele
2021 SN Operations Research Forum  
For instance, OR can help decide how to optimally allocate resources and how to manage the supply chain of food, medical and essential items.  ...  We compare some search terms with Google Trends and report several opinions on this topic.  ...  I would like to also thank Martina Fischetti for her suggestions and support.  ... 
doi:10.1007/s43069-020-00051-y fatcat:4bhxn3eezbbhdf7zvmv5qymgue

Dynamic vehicle routing problems: Three decades and counting

Harilaos N. Psaraftis, Min Wen, Christos A. Kontovas
2015 Networks  
We comment on technological vis-à-vis methodological advances for this class of problems and suggest directions for further research.  ...  These are (1) type of problem, (2) logistical context, (3) transportation mode, (4) objective function, (5) fleet size, (6) time constraints, (7) vehicle capacity constraints, (8) the ability to reject  ...  Madsen for their comments on an earlier version of this document.  ... 
doi:10.1002/net.21628 fatcat:gg4asvpzmre55p5corrgizgdha

An optimization model for evacuating people with disability in extreme disaster conditions: A case study

Sadoullah Ebrahimnejad, Michelle Villeneuve, Reza Tavakkoli-Moghaddam
2021 Scientia Iranica. International Journal of Science and Technology  
The increasing severity and frequency of disasters have posed major challenges for people.  ...  Finally, a sensitivity analysis is conducted to prepare some managerial implications for crisis managers during the occurrence of disasters to help PWDs during evacuation.  ...  [53] proposed a robust two-stage model for evacuation in response to large-scale natural disasters.  ... 
doi:10.24200/sci.2021.57431.5237 fatcat:yibvkl66kbfrtky256m5s5vvfm

The Vessel Schedule Recovery Problem (VSRP) – A MIP model for handling disruptions in liner shipping

Berit D. Brouer, Jakob Dirksen, David Pisinger, Christian E.M. Plum, Bo Vaaben
2013 European Journal of Operational Research  
terms of fleet size.  ...  We demonstrate our approach on the routing problem for unmanned air vehicles with minimization of distance traveled and minimization of radar detection threat objectives. , Gokcen Turkel Dynamic scheduling  ...  changes in a tabu search environment.  ... 
doi:10.1016/j.ejor.2012.08.016 fatcat:c27kagfnxnhjfbil2rydhjhomm

46 th Annual Conference Italian Operations Research Society

Abstracts Book, Elisabetta Scala
Clinical pathways should determine an optimal sequence and schedule for the patient's treatment with the objective of minimizing delays and maximizing the quality of care while taking into account resource  ...  Especially in hospitals, scheduling problems and inhouse logistics are of great importance. With the help of medical and technical devices patients are examined, treated and cured if possible.  ...  An ILP based solving approach will be presented for the defined problem and its variants.  ... 

Abstracts of Working Papers in Economics

2002 Abstracts of Working Papers in Economics  
AB Recent trade and wages literature focuses on whether trade or technology has been the major source of increases in wage inequality in Organization for Economic Cooperation and Development (OECD) countries  ...  I review the two most popular explanations for these differential trends: that relative supply of skills increased faster in Europe, and that European labor market institutions prevented inequality from  ...  We introduce a novel framework based on the concept of national innovative capacity.  ... 
doi:10.1017/s0951007900005635 fatcat:4go3cqj4ezhdzcps7qsi35kvyi

Complete Vol 6 (1993)

- -
1993 Fontanus  
He based much of his report on Mary Gadbury's long confession, which he took down almost word for word.  ...  Montreal was scheduled to host "The Quebec Problem" on the following Sunday.  ...  The Geography Department donated a run of 4500 air photos, from southern Quebec and various parts of northern Canada.  ... 
doi:10.26443/fo.v6i.230 fatcat:4pwbong36jf4vhzfvyq35aidsq

Location Privacy in Automotive Telematics [chapter]

Muhammad Usman Iqbal, Samsung Lim
Geographic Information Systems  
However, this research looks beyond a solely technology-based solution. For example, the ethical implications of the use of GPS data in pricing models have not been fully understood.  ...  As a result, pricing of roads based on telematics technologies has gained significant attention.  ...  This system could also automatically contact vehicle occupants when an airbag gets deployed, and dispatch an ambulance at non-response.  ... 
doi:10.4018/978-1-4666-2038-4.ch024 fatcat:acymtmmblndr5hpts65nthe3pu

Content and Context: Connecting Oral History and Social History in Solomon Islands [article]

Christopher Chevalier, University, The Australian National
to the post-war social history of Solomon Islands.  ...  The thesis presents a new model of oral history methodology in six 'domains' (visual, spatial, oral-aural, textual, numerical and digital) covering three phases of oral history: primary (recording and  ...  interviews were scheduled.  ... 
doi:10.25911/xrgq-8m30 fatcat:ffxhtj5i4vat5fp6koxksce4ie

The Firefly Project

San Francisco
2013 unpublished
the salt air and a feeling of contentment.  ...  For the rest of the time that we lived there, I would go to the shore every day and search the horizon to see if they might be sailing back to me.  ...  While the program is intended to be restorative for the patient, the catharsis is mutual: each of my pen pals -all of whom have been women -are in different stages of life than I am.  ...