A model-driven and simulation-based method to analyze building evacuation plans

Author(s):  
Daniele Gianni ◽  
Paolo Bocciarelli ◽  
Andrea D'Ambrogio ◽  
Giuseppe Iazeolla
2019 ◽  
Vol 38 (2) ◽  
pp. 90-93
Author(s):  
K.S. Sahana ◽  
Ghulam Jeelani Qadiri ◽  
Prakash R.M. Saldanha

Introduction: Internship is very a critical period of a medical undergraduate education during which student evolves into a doctor. The objectives of this study were to assess the interns at the end of their paediatric postings. Materials and Methods. Interns knowledge and skills were assessed at the end of their postings in the must know areas. Assessment was conducted by the trained faculty and interns were given the orientation about it. Method of assessment included OSCE, simulation based using standardized patients and computer-based model driven simulators. Feedback was given to the students immediately at the end of their exam Results: Total 202 interns participated in the exam over the period of two years. New-borns assessment was done more frequently (22.7%) and interpretation of investigations was less frequently assessed (7.9%). Rest of other stations was assessed almost at the equal proportion. Highest score was observed in vaccines section (7.5) and lowest score was seen in procedures assessment (5.5). Conclusion. Interns were found to be weaker in procedural, communication and clinical scenario judgement skills which will help us in planning future training of the Interns.


2016 ◽  
Vol 18 (3) ◽  
pp. 296-305 ◽  
Author(s):  
Pranav Venkataraman ◽  
Samuel R. Browd ◽  
Barry R. Lutz

OBJECTIVE The surgical placement of a shunt designed to resolve the brain's impaired ability to drain excess CSF is one of the most common treatments for hydrocephalus. The use of a dynamic testing platform is an important part of shunt testing that can faithfully reproduce the physiological environment of the implanted shunts. METHODS A simulation-based framework that serves as a proof of concept for enabling the application of virtual intracranial pressure (ICP) and CSF models to a physical shunt-testing system was engineered. This was achieved by designing hardware and software that enabled the application of dynamic model-driven inlet and outlet pressures to a shunt and the subsequent measurement of the resulting drainage rate. RESULTS A set of common physiological scenarios was simulated, including oscillations in ICP due to respiratory and cardiac cycles, changes in baseline ICP due to changes in patient posture, and transient ICP spikes caused by activities such as exercise, coughing, sneezing, and the Valsalva maneuver. The behavior of the Strata valve under a few of these physiological conditions is also demonstrated. CONCLUSIONS Testing shunts with dynamic ICP and CSF simulations can facilitate the optimization of shunts to be more failure resistant and better suited to patient physiology.


2020 ◽  
Vol 37 (5) ◽  
pp. 1757-1786 ◽  
Author(s):  
Jian-Ping Wang ◽  
Mei-Ru Wang ◽  
Jian-Lan Zhou ◽  
Qing-Jun Zuo ◽  
Xun-Xian Shi

Purpose The purpose of this study is to develop optimal evacuation plan to provide valuable theoretical and practical insight in the fire evacuation work of similar structures, by proposing a systematic simulation-based guided-evacuation agent-based model (GAM) and a three-stage mathematical evacuation model to investigate how to simulate, assess and improve the performance efficiency of the evacuation plan. Design/methodology/approach The authors first present the self-evacuation and guided-evacuation models to determine the optimal evacuation plan in ship chamber. Three key performance indicators are put forward to quantitatively assess the evacuation performance within the two fire scenarios. The evacuation model in tower is built to obtain the dividing points of the three different fire evacuation plans. Findings The study shows that the optimal evacuation plan determined by the GAM considering social relationships effectively relieves the congestion or collision of evacuees and improves the evacuation uniformity. The optimal evacuation plan not only solves the crush caused by congestion or collision of evacuees but also can greatly shorten the evacuation time for passenger ship fire. Originality/value This study establishes the GAM considering the interactive evacuee characteristics and the proportion of evacuees guided by the crew members to make the optimal evacuation plan more time-efficient. The self-evacuation process is simulated to assess the performance of the guided-evacuation strategies, which are used to verify the effectiveness and feasibility of the optimal evacuation plan in this research.


2019 ◽  
Vol 1 ◽  
pp. 1-2
Author(s):  
Zdeněk Stachoň ◽  
Petr Kubíček ◽  
Hana Švedová ◽  
Jie Shen ◽  
Xinqian Wu ◽  
...  

<p><strong>Abstract.</strong> An increasing number of population brings increasing vulnerability of the society to different disasters and emergencies. The maps provide spatial information, which is useful on different levels of decision making during emergencies from strategic planning to single person decision making. To fit the user needs maps can be optimized for a particular user, user group, available technology or external conditions.</p><p>Evacuation is a crucial part of the process dealing with most of the emergencies. In case of building the standard ISO 23601:2009, Safety identification &amp;ndash; Escape and evacuation plan signs was developed to provide the guidelines for the design, materials, installation and other attributes of the evacuation plans. It is mostly based on the ISO 7010:2003, Graphical symbols &amp;ndash; Safety colours and safety signs &amp;ndash; Safety signs that are widely used in the buildings all around the world. The symbols were designed with the purpose to attract user attention under any circumstances and across the different cultural background. It can be a disadvantage in case of cartographic visualization, while the symbols on the map are not easy to identify the anchor point, increase the graphics clutter of the map (see figure 1).</p><p>In our research, we have decided to focus on the evaluation of user’s abilities to use and understand of designed evacuation signs and plans. As the standard is intended to be used worldwide, we have designed study focused on the comparison of the understanding to the meaning of evacuation symbols in general and also in the form of cartographic visualization. We have designed the user study performed in the first step in Nanjing (China) and in Brno (Czech Republic) in order to verify the cross-cultural universality of evacuation symbols. There were about seventy participants in China and seventy participants in the Czech Republic, who performed similar tasks. The tasks consist of separate symbol meaning selection, a separate symbol meaning estimation, identification of a particular symbol on the map and basic interpretation of the map content. The original and modified map signs were used as stimuli in case of cartographic visualization. Results were statistically processed and discussed. The results bring a new perspective on the standardized cartographic visualization for purposes of building evacuation.</p>


2021 ◽  
Author(s):  
James Harbin ◽  
Simos Gerasimou ◽  
Nicholas Matragkas ◽  
Athanasios Zolotas ◽  
Radu Calinescu

Author(s):  
Nan Zou ◽  
Shu-Ta Yeh ◽  
Gang-Len Chang ◽  
Alvin Marquess ◽  
Michael Zezeski

This paper presents a simulation-based system for Ocean City, Maryland, evacuation during hurricanes. The proposed model features integration of optimization and simulation that allows potential users to revise the optimized plan for both planning and real-time operations. Since it is difficult to capture all network operational constraints and driver responses fully with mathematical formulations, six evacuation plans for Ocean City were investigated. Each was optimized initially with the optimization module and then revised on the basis of the results of simulation evaluation. To address potential incidents during the evacuation, the study presents a real-time operation plan with a developed system that allows the responsible operators to concurrently evaluate all candidate responsive strategies and to track the performance over time of the implemented strategy.


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