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Performance and availability evaluation of an smart hospital architecture

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Abstract

Low latency and high availability of resources are essential characteristics to guarantee the quality of services in health systems. Hospital systems must be efficient to prevent loss of human life. Smart hospitals promise a health revolution by capturing and transmitting patient data to doctors in real-time via a wireless sensor network. However, there is a significant difficulty in assessing the performance and availability of such systems in real contexts due to failures not being tolerated and high implementation costs. This paper adopts analytical models to assess the performance and availability of intelligent hospital systems without having to invest in real equipment beforehand. Two Stochastic Petri Net models were proposed to represent intelligent hospital architectures. One model is used to assess performance, and another to assess availability. The models are pretty parametric, making it possible to calibrate the resources, service times, times between failures, and times between repairs. The availability model, for example, allows you to define 48 parameters, allowing you to evaluate a large number of scenarios. The analysis showed that the arrival rate in the performance model is an impacting parameter. It was possible to observe the close relationship between MRT, resource utilization, and discard rate in different scenarios, especially for high arrival rates. Three scenarios were explored considering the second model. The highest availability results were observed in scenario A, composed of server redundancy (local and remote). Such scenario—with redundancy—presented an availability of 99.9199%, that is, 7.01 h/year of inactivity. In addition, this work presents a sensitivity analysis that identifies the most critical components of the architecture. Therefore, this work can help hospital system administrators plan more optimized architectures according to their needs.

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Notes

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  2. Available at https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-1000-series-switches/nb-06-cat1k-ser-switch-ds-cte-en.html?oid=otren019232.

  3. https://newsroom.cisco.com/press-release-content?articleId=1847422.

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Authors and Affiliations

  1. Universidade Federal do Piauí (UFPI), Picos, Piauí, Brazil

    Laécio Rodrigues, Igor Gonçalves & Francisco Airton Silva

  2. Universidade de Pernambuco (UPE), Pernambuco, Brazil

    Patricia Takako Endo

  3. 3th Brazilian Army Engineering and Construction Battalion (BEC), Picos, Piauí, Brazil

    Iure Fé

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  1. Laécio Rodrigues
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  2. Igor Gonçalves
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Correspondence to Francisco Airton Silva.

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Rodrigues, L., Gonçalves, I., Fé, I. et al. Performance and availability evaluation of an smart hospital architecture. Computing 103, 2401–2435 (2021). https://doi.org/10.1007/s00607-021-00979-x

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