Evacuation Simulation to a Library Room of a University Based on Computer Software Building EXODUS

2014 ◽  
Vol 651-653 ◽  
pp. 1576-1579
Author(s):  
Yu Min Tian
Keyword(s):  
Computer Software ◽  
Evacuation Simulation ◽  
Psychological Characteristic ◽  
Crowd Management ◽  
Facilities Design ◽  
Crowd Evacuation ◽  
Crowd Behaviors ◽  
And Behavior

Panic is a typical psychological characteristic of crowd in a fire, which can cause serious casualties. By discussing psychology and behavior of crowd in panic, the paper analyzes behavior of crowd evacuation, and utilizes Building EXODUS to simulate crowd behaviors to a library room of a university. Some instructional conclusions are got, which can give theoretic and methodological guides to crowd management, crowd facilities design, evacuation analysis in buildings, establishment of emergency preplanning and so on.

Simulation Model of Crowd Evacuation Navigation in a Multi-Obstacle Environment

2020 ◽  
pp. 036119812097126
Author(s):  
Zhongrui Ni ◽  
Zhen Liu ◽  
Tingting Liu ◽  
Yanjie Chai ◽  
Cuijuan Liu
Keyword(s):  
Simulation Model ◽  
Simulation Experiment ◽  
Control Algorithms ◽  
Prototype System ◽  
Evacuation Simulation ◽  
Agent Based ◽  
Crowd Management ◽  
Navigation Simulation ◽  
Local Navigation ◽  
Crowd Evacuation

The simulation of a crowd evacuating public buildings can be an important reference in planning the layout of buildings and formulating evacuation strategies. This paper proposes an agent-based crowd model; a crowd evacuation navigation simulation model is proposed for the multi-obstacle environment. We introduce the concept of navigation factor to describe the proximity of the navigation point to the exit. An algorithm for creating navigation points in multi-obstacle environment is proposed along with the global navigation and local navigation control algorithms of the crowd. We construct a crowd evacuation simulation prototype system with different simulation scenes using the scene editor. We conduct the crowd evacuation simulation experiment in the multi-obstacle scene, recording and analyzing the relevant experimental data. The simulation prototype system can be used to derive the evacuation time of the crowd and analyze the evacuation behavior of the crowd. It is expected to provide a visual deduction method for crowd management in an evacuation emergency.

Study on Simulation of Evacuation Behavior to a Crowd in Public Buildings

2014 ◽  
Vol 644-650 ◽  
pp. 5515-5518
Author(s):  
Yu Min Tian
Keyword(s):  
Computer Simulation ◽  
Simulation Methods ◽  
Evacuation Time ◽  
Crowd Management ◽  
Traditional Research ◽  
The World ◽  
Facilities Design ◽  
Crowd Evacuation ◽  
Hand Calculation ◽  
Evacuation Behaviors

Generally traditional research methods to crowd evacuation depend on experiences and hand calculation, but the errors of these methods are clear. So computer simulation methods have become popular all over the world. The paper studied crowd evacuation behaviors by building EXODUS developed by University of Greenwich. Evacuation time and behaviors were simulated and some differences were compared with the results by hand and experiences, which can give theoretic and methodological guides to crowd management, crowd facilities design, evacuation analysis in buildings, establishment of emergency preplanning and so on.

WALK: A Modular Testbed for Crowd Evacuation Simulation

2013 ◽  
pp. 1417-1424
Author(s):  
Stefan Münchow ◽  
Ia Enukidze ◽  
Stefan Sarstedt ◽  
Thomas Thiel-Clemen
Keyword(s):  
Evacuation Simulation ◽  
Crowd Evacuation

scholarly journals Study on evacuation simulation under crowd-diversion condition

2018 ◽  
Vol 10 (7) ◽  
pp. 168781401878509 ◽  
Author(s):  
Yung-Piao Chiu ◽  
Yan-Chyuan Shiau ◽  
Yi-Hsuan Lai
Keyword(s):  
Literature Review ◽  
Flow Diverter ◽  
Evacuation Simulation ◽  
Evacuation Time ◽  
Software Packages ◽  
Space Size ◽  
Crowd Evacuation ◽  
Simulation Results ◽  
Safety Evacuation ◽  
Occupant Evacuation

With the increasing number of domestic buildings, the importance of safety evacuation in case of fire in the buildings has been aware. Occupants in a building will crowd at exit(s) when they evacuate in disasters. The content of this study includes the following: (1) to conduct a literature review on severe stampedes in history, identifying the number of casualties, and to explore existing research on crowd evacuation; (2) to examine the applicability of software packages EXODUS and Unity for simulating occupant evacuation using them for simulations under identical conditions; and (3) to construct simulated evacuation environments using Unity and perform simulations with different combinations of occupant number, space size, exit size, and flow diverter size. The simulation results found that placing a flow diverter in front of the exit could reduce the evacuation time effectively. The best result was observed when the width of the door is close to the width of the flow diverter; it can reduce the evacuation time by about 25%. When more than 60 people were emptying through an exit below 120 cm width, the blocking happened regardless of whether a flow diverter was placed.

scholarly journals Effect of external lighting on biopotential of maize leaves caused by pulsed temperature stimulation

2017 ◽  
Vol 8 (2) ◽  
pp. 179-184
Author(s):  
M. P. Motsnyj ◽  
N. P. Botsva ◽  
О. V. Elina ◽  
D. V. Chernetchenko ◽  
L. Y. Sadovskaya ◽  
...  
Keyword(s):  
Computer Software ◽  
Plant Cells ◽  
Cold Stimulation ◽  
Time Period ◽  
The Stability ◽  
Adaptive Ability ◽  
And Behavior ◽  
External Stimuli ◽  
Temperature Stimulation ◽  
Refractory Phase

Study of electrophysiological indicators of the condition and behavior of plants has become more important in the development of farming activities and the search for effective ways to improve the productivity of crops. The influence of external light on the adaptive ability of corn leaf cells to rhythmic cold stimulation was determined experimentally. The method of rhythmic cold stimulation is not adequate for the studied plants, but its application allows us to evaluate the stability of plant cells to external stimuli. The method consists in repeating irritation during the time period of less duration than the relative refractory phase, which causes a response of less than the previous amplitude. Because of this in the system there is a negative feedback that leads to stabilization of the amplitude of biopotentials that are registered. Rhythmic cold stimulation was applied to the leaf with the help of a quick-response thermostimulator. Rhythmic cold stimuli and settings of pulses were set by computer software. Cooling temperature was controlled using miniature differential thermocouple. Potentials of the leaf surface were diverted by an unpolarized macroelectrode and after a preamplifier fed to the input of the USB oscilloscope connected to the computer. Analysis of the results of experiments was performed using automated developed software. As a result, we experimentally established that rhythmic stimulation of leaves by cold leads to stabilization of responding potential. The level of stabilization depends on the frequency of cold stimuli and describes the adaptive properties of the system causing the biopotential. We found that the absence of photosynthesis when there is a deficit outdoor lighting leads to a significant increase in the average level of stabilized responses, indicating increased stability of the system to external influences. The maximum of this increase fell on the fourth day. This increase is likely to be due to the restructuring of functional ion transport through cell membranes, generating potentials registered. In the interval 4–9th days there was a significant decrease in stabilization, probably due to adaptation of plant cells to a lack of light, or depletion of ATP, which provides the active transport of ions across the cell membrane. 

scholarly journals Crowd Evacuation Behaviour Modeling and Simulation in 3D Platform

2020 ◽  
Vol 8 (5) ◽  
pp. 1187-1192
Keyword(s):  
Exit Time ◽  
Three Dimensional ◽  
Emergency Situation ◽  
Crowd Simulation ◽  
Evacuation Simulation ◽  
Evacuation Time ◽  
Building Evacuation ◽  
Crowd Evacuation ◽  
The Individual ◽  
Safe Condition

Crowd simulation is an active research domain and is crucial for simulating crowd behaviour in certain condition such as normal or panic situation. The simulation is to show the interaction between the individual in a crowd. Nowadays, there are many kinds of scenarios as well as simulation softwares that can be adapted to simulate a crowd simulation such as during emergency situation e.g. building evacuation. Crowd simulation in three-dimensional platform is fairly important in order to have a more realistic looks and movement of the crowd in one particular environment. The evacuation simulation is useful for the crowd in one confinement to seek for a safe exit path in shortest time possible and thus increase the occupant’s safety. The evacuation time is said to be in safe condition if all the evacuees successfully can get through the exit in minimal time. To aid in minimal exit time, the concept of faster-is-slower (bottleneck) must be solved as it can lead to more waiting time or delay during evacuation process. In this paper, it will discuss about the crowd simulation behavior, crowd simulation based on agent-based model, existing crowd simulation tools and the result of simulating the three-dimensional (3D) crowd evacuation time based on a number of exits variation in panic situation. The tools used to carry out the experiment is Anylogic software whereby the results show that it adheres to shorter evacuation time when the number of exit increases. The 3D layout design was following the original layout the faculty’s lower ground floor where the classrooms are mostly resided. The simulation is useful in order to estimate of evacuation time with different total number of exits to alleviate the faster-is-slower effect in case of any emergency situation happens at the faculty building.

Crowd evacuation simulation approach based on navigation knowledge and two-layer control mechanism

2018 ◽  
Vol 436-437 ◽  
pp. 247-267 ◽  
Author(s):  
Hong Liu ◽  
Baoxi Liu ◽  
Hao Zhang ◽  
Liang Li ◽  
Xin Qin ◽  
...  
Keyword(s):  
Control Mechanism ◽  
Simulation Approach ◽  
Evacuation Simulation ◽  
Crowd Evacuation ◽  
Layer Control
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