How do traffic and demand daily changes define urban emergency medical service (uEMS) strategic decisions?: A robust survival model

Publication date: March 2019Source: Journal of Transport &Health, Volume 12Author(s): Marco Amorim, Sara Ferreira, António CoutoAbstractThis paper presents a methodology to locate vehicle base stations using robust optimization to address daily traffic and demand changes, which are due to what we define as city dynamics. The model allows us to better understand how these daily changes affect an urban emergency medical service (uEMS) response system.The methodology incorporates two steps. The first step uses scenario-based optimization and survival function theory to locate vehicle base stations, whereas the second step uses agent-based simulation to assess the solution performance and compare it with less robust and non-survival prone solutions. The proposed models are tested for different situations using real data from the city of Porto.The results of the sensitivity analysis of the model show the relevance of understanding the dynamics of cities and how they impact uEMS response systems. Useful insights regarding the number of stations and the average response time are addressed together with the minimum number of stations required for different maximum response time limits and different survival coefficients.Finally, we conclude on how a robust solution improves response time by accounting for city dynamics, and how a heterogeneous survival based approach benefits victims’ by properly measuring the system response in terms of the victim’ outcomes.
Source: Journal of Transport and Health - Category: Occupational Health Source Type: research

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Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
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Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
Resveratrol Protects the Myocardium in Sepsis by Activating the Phosphatidylinositol 3-Kinases (PI3K)/AKT/Mammalian Target of Rapamycin (mTOR) Pathway and Inhibiting the Nuclear Factor-κB (NF-κB) Signaling Pathway. Med Sci Monit. 2019 Dec 06;25:9290-9298 Authors: Shang X, Lin K, Yu R, Zhu P, Zhang Y, Wang L, Xu J, Chen K Abstract BACKGROUND Sepsis combined with myocardial injury is an important cause of septic shock and multiple organ failure. However, the molecular mechanism of sepsis-induced myocardial dysfunction has not yet been thoroughly studied. Resveratrol has been an important rese...
Source: Medical Science Monitor - Category: Research Tags: Med Sci Monit Source Type: research
Authors: Pountney M PMID: 31809596 [PubMed - in process]
Source: Medicine, Conflict and Survival - Category: International Medicine & Public Health Tags: Med Confl Surviv Source Type: research
Authors: Birch M, van Bergen L PMID: 31809595 [PubMed - in process]
Source: Medicine, Conflict and Survival - Category: International Medicine & Public Health Tags: Med Confl Surviv Source Type: research
This study assessed the prevalence, risk factors, and co-infectivity of CTBP such as piroplasms, rickettsiae, Coxiella burnetii, hepatozoa, hemotropic mycoplasmas, and Borrelia spp., using PCR and phylogenetic analyses. Of the 510 dogs tested, three CTBP, including Anaplasma phagocytophilum 16S rRNA (13; 2.6%), Hepatozoon canis 18S rRNA (2; 0.4%), and Mycoplasma haemocanis 16S rRNA (1; 0.2%) were detected. PCR adapted to amplify A. phagocytophilum msp2 and groEL genes generated amplicons thereof in two out of 13 positive dogs. One shelter dog was co-infected with A. phagocytophilum and M. haemocanis. However, Ehrlichia spp...
Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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Source: Ticks and Tick borne Diseases - Category: Zoology Source Type: research
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Source: Hellenic Journal of Cardiology - Category: Cardiology Tags: Hellenic J Cardiol Source Type: research
Transparent substrates introduce challenges in optical metrology, recording, and microscopy. Backside reflections reduce signal to noise, ...
Source: Optics Letters - Category: Physics Authors: Source Type: research
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