Simulation study of crowd dynamics in pedestrian evacuation concerning panic contagion: A cellular automaton approach

2022 ◽  
Author(s):  
Guan-ning Wang ◽  
Tao Chen ◽  
Jin-wei Chen ◽  
Kaifeng Deng ◽  
Ru-dong Wang
Keyword(s):  
Decision Making ◽  
Cellular Automaton ◽  
Decision Making Process ◽  
Pedestrian Dynamics ◽  
Pedestrian Evacuation ◽  
Crowd Density ◽  
Floor Field ◽  
Set Up ◽  
The Impact ◽  
Transmission Status

Abstract The study of the panic evacuation process is of great significance to emergency management. Panic not only causes negative emotions such as irritability and anxiety, but also affects the pedestrians decision-making process, thereby inducing the abnormal crowd behavior. Prompted by the epidemiological SIR model, an extended floor field cellular automaton model was proposed to investigate the pedestrian dynamics under the threat of hazard resulting from the panic contagion. In the model, the conception of panic transmission status (PTS) was put forward to describe pedestrians' behavior who could transmit panic emotions to others. The model also indicated the pedestrian movement was governed by the static and hazard threat floor field. Then rules that panic could influence decision-making process were set up based on the floor field theory. The simulation results show that the stronger the pedestrian panic, the more sensitive pedestrians are to hazards, and the less able to rationally find safe exits. However, when the crowd density is high, the panic contagion has a less impact on the evacuation process of pedestrians. It is also found that when the hazard position is closer to the exit, the panic will propagate for a longer time and have a greater impact on the evacuation. The results also suggest that as the extent of pedestrian's familiarity with the environment increases, pedestrians spend less time to escape from the room and are less sensitive to the hazard. In addition, it is essential to point out that, compared with the impact of panic contagion, the pedestrian's familiarity with environment has a more significant influence on the evacuation.

scholarly journals The Impact of Social Media Use on Consumers’ Restaurant Consumption Experiences: A Qualitative Study

2021 ◽  
Vol 13 (12) ◽  
pp. 6581
Author(s):  
Jooyoung Hwang ◽  
Anita Eves ◽  
Jason L. Stienmetz
Keyword(s):  
Decision Making ◽  
Social Media ◽  
Selection Process ◽  
Decision Making Process ◽  
Structured Interviews ◽  
High Standards ◽  
Tourism And Hospitality Industry ◽  
Tourism And Hospitality ◽  
Search For Information ◽  
The Impact

Travellers have high standards and regard restaurants as important travel attributes. In the tourism and hospitality industry, the use of developed tools (e.g., smartphones and location-based tablets) has been popularised as a way for travellers to easily search for information and to book venues. Qualitative research using semi-structured interviews based on the face-to-face approach was adopted for this study to examine how consumers’ restaurant selection processes are performed with the utilisation of social media on smartphones. Then, thematic analysis was adopted. The findings of this research show that the adoption of social media on smartphones is positively related with consumers’ gratification. More specifically, when consumers regard that process, content and social gratification are satisfied, their intention to adopt social media is fulfilled. It is suggested by this study that consumers’ restaurant decision-making process needs to be understood, as each stage of the decision-making process is not independent; all the stages of the restaurant selection process are organically connected and influence one another.

Is Hindsight Really 20/20?: The Impact of Outcome Information on the Decision-Making Process

2018 ◽  
Vol 17 (3) ◽  
pp. 285-296 ◽  
Author(s):  
Amanda Beltrani ◽  
Amanda L. Reed ◽  
Patricia A. Zapf ◽  
Randy K. Otto
Keyword(s):  
Decision Making ◽  
Decision Making Process ◽  
Outcome Information ◽  
The Impact

scholarly journals Nature value: the evolution of this concept

2012 ◽  
Vol 36 (1) ◽  
pp. 9-15
Author(s):  
Sabrina Soares da Silva ◽  
Ricardo Pereira Reis ◽  
Patrícia Aparecida Ferreira
Keyword(s):  
Decision Making ◽  
Natural Resources ◽  
Environmental Degradation ◽  
Economic Valuation ◽  
Human Action ◽  
Decision Making Process ◽  
Environment Management ◽  
Goods And Services ◽  
Current Scenario ◽  
The Impact

More attention has been paid to environmental matters in recent years, mainly due to the current scenario of accentuated environmental degradation. The economic valuation of nature goods can contribute to the decision-making process in environment management, generating a more comprehensive informational base. This paper aims to present, in a historic perspective, the different concepts attributed to nature goods and were related to the current predominant perspectives of nature analyses. For this purpose, this paper presents the different concepts attributed to value since the pre-classical period, when nature were viewed as inert and passive providers of goods and services, this view legitimized nature's exploration without concern over the preservation and conservation of nature. The capacity of nature to absorb the impact of human action appears to be reaching its limit, considering the irreversibility, the irreproducibility and the possibility of collapse. The appropriate method for valuing natural resources is not known, but more important than the method is to respect and incorporate the particular characteristics of the nature goods into this process. These characteristics must be valuated in order to arrive at a more consistence approach to nature value and promote sustainability.

scholarly journals Concept of a Decision-Based Pedestrian Model

2020 ◽  
Vol 5 ◽  
Author(s):  
Cornelia Von Krüchten ◽  
Andreas Schadschneider
Keyword(s):  
Decision Making ◽  
Cellular Automaton ◽  
Basic Concept ◽  
Two Dimensions ◽  
Pedestrian Dynamics ◽  
Preliminary Results ◽  
Single File ◽  
Model Yield

We develop a decision-based model for pedestrian dynamics which is an extension of the Stochastic Headway Distance Velocity (SHDV) model for single-file motion to two dimensions. The model is discrete in time, but continuous in space. It combines perception, anticipation and decision-making with the simplicity and stochasticity that are characteristic for cellular automaton models. The basic concept is discussed and preliminary results show that the model yield realistic trajectories and fundamental diagrams.

scholarly journals THE ROLE OF SOCIAL MEDIA ON MIGRATION DECISION-MAKING PROCESSES: Case of Indonesian Student in University of Groningen

2018 ◽  
Vol 6 (1) ◽  
pp. 515
Author(s):  
Inayah Hidayati
Keyword(s):  
Decision Making ◽  
Social Media ◽  
Migration Decision ◽  
Decision Making Process ◽  
Migration Behavior ◽  
Interview Guide ◽  
Destination Area ◽  
Decision Making Processes ◽  
The Impact

Objective: This research aims to explain the impact of social media on the migration decision-making process of Indonesian student migrants in University of Groningen who used a social media account. In detail, this research will consider the role of social media in the migration decision-making process of students who emigrated from Indonesia and how they uses social media in the context of the migration decision-making process. Methods: The data collected included qualitative data from in-depth interviews and supported by study literatures. An interview guide was formulated to facilitate the indepth interviews and generate a better understanding of migration behavior. Expectation: Social media help Indonesian student migrants on migration decision making process and they use social media for searching information about destination area. Result: Student migrant in University of Groningen use their social media to gain information before they choose that university for study. They use Facebook to making contact with their friends and collagues in the destination country. Student group on Facebook help Indonesian student to get information about school and daily life.

Use of Selected Geospatial Tools for the Purposes of Reconnaissance

2020 ◽  
Vol 12 (2) ◽  
pp. 40-41
Author(s):  
Maciej Zaorski
Keyword(s):  
Decision Making ◽  
Continuous Process ◽  
Decision Making Process ◽  
Site Assessment ◽  
Geospatial Tools ◽  
The Military ◽  
The Impact ◽  
Traffic Corridors ◽  
Modern Technologies

The implementation of modern tools in the military system constitutes an important step in supporting the decision-making process. The impact of new GIS technologies is important for the assessment of the battlefield . According to assumptions, reconnaissance is a continuous process that crowns the assessment of the opponent and of the battlefield. Site assessment is an element of the command process where the conclusions of the task analysis includes an assessment of the potential opponent together with his modus operandi and an assessment of the environment . As part of the Information Preparation of the Battlefield (hereinafter referred to as IPB), the identification of threats and limitations has an impact on the identification of potential approach routes, traffic corridors and maneuvers in assigned areas and lanes . The end result is the determination of the maneuverability of forces and resources owned or those of the opponent. The information is to relate to the impact of the terrain components on the scope and nature of conducted activities, and the hydrometeorological conditions are to relate to the impact on the terrain, equipment, and people . As far as it regards the analysis of the environment and the opponent, it is possible to apply modern technologies to shorten the time for the analyses performed within the ongoing decision-making process.

Gender and Other Factors That Influence Tourism Preferences

2019 ◽  
pp. 454-471 ◽  
Author(s):  
Naomi F. Dale
Keyword(s):  
Decision Making ◽  
Information Search ◽  
Personal Characteristics ◽  
Destination Choice ◽  
Decision Making Process ◽  
Substantial Body ◽  
Gender And Technology ◽  
Number Of Factors ◽  
Travel Decision ◽  
The Impact

The consumption process of travel decision making, is influenced by a number of factors and a substantial body of decision making literature in the form of the broader ‘models of consumer behaviour' has been adapted to attempt to describe this process. Existing ‘foundation models' present variables such as personal characteristics and attitudes as factors that affect the vacation decision making process, but fail to discuss the extent to which gender and technology preferences influence decisions and destination choice. Economic models are based on utility theory as a decision making framework, however, they do not allow for the other consumer oriented variables. Current models (economic or otherwise) focus on individuals and their decision making process without a combined consideration of information search and technology gendered preferences and the impact they have on choosing a destination for a vacation.

Methods of Group Decisions and Aggregation of Experts’ Opinions

2011 ◽  
pp. 151-171
Author(s):  
Jirí Vanícek ◽  
Ivan Vrana ◽  
Shady Aly
Keyword(s):  
Decision Making ◽  
Information Theory ◽  
Decision Making Process ◽  
Expert Evaluation ◽  
Group Decisions ◽  
Correct Decision ◽  
Expert Opinions ◽  
The Impact

Expert evaluation is often the most reliable way to predict results of a certain process. Estimates from several experts are usually needed in order to achieve correct decision making. This chapter presents and systematically sorts methods for aggregation expert opinions with respect to specific features of the decision making process. Based on information theory, the chapter introduces concepts for understanding expert consensusand also discusses the impact of suppressing/emphasizing extreme estimates or of unequally valuing individual estimates. This chapter addresses the estimation of YES/NO binary results as well as numeric values of a certain attribute and also considers cases when only an estimate or a dispersion of opinions of experts is considered.

scholarly journals Digital Twin for Monitoring Ergonomics during Manufacturing Production

2020 ◽  
Vol 10 (21) ◽  
pp. 7758
Author(s):  
Alessandro Greco ◽  
Mario Caterino ◽  
Marcello Fera ◽  
Salvatore Gerbino
Keyword(s):  
Decision Making ◽  
Decision Making Process ◽  
Methodological Framework ◽  
Production Lines ◽  
Work Activities ◽  
Digital Twin ◽  
Set Up ◽  
Operational Issues ◽  
Smart Factories

Within the era of smart factories, concerning the ergonomics related to production processes, the Digital Twin (DT) is the key to set up novel models for monitoring the performance of manual work activities, which are able to provide results in near real time and to support the decision-making process for improving the working conditions. This paper aims to propose a methodological framework that, by implementing a human DT, and supports the monitoring and the decision making regarding the ergonomics performances of manual production lines. A case study, carried out in a laboratory, is presented for demonstrating the applicability and the effectiveness of the proposed framework. The results show how it is possible to identify the operational issues of a manual workstation and how it is possible to propose and test improving solutions.

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