LifeBelt: Silent Directional Guidance for Crowd Evacuation

Ferscha, Alois; Zia, Kashif

doi:10.1109/iswc.2009.37

Cited by 37 publications

(23 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notifying, thus, without compromising attention, might have a solution with a careful design of information delivery systems addressing the "secondary channels". Since many (primary) tasks of everyday life (e. g. work, sports, leisure), but also in exceptional situations (e. g. evacuations) engage the visual and auditory channels, the consideration of other -like the tactile [3] and olfactory [4]-channels appear worthwhile for attention preserving communication systems.…”

Section: Introductionmentioning

confidence: 99%

Tactor placement in wrist worn wearables

Matscheko

Ferscha

Riener

et al. 2010

International Symposium on Wearable Computers (ISWC) 2010

Self Cite

View full text Add to dashboard Cite

Vibro-tactile stimulation has been revealed as a potentially effective means to deliver spontaneous notifications like alerts to recipients that are focused on other tasks (although only at very low bit rates, and depending on the place at which the tactors are placed). This work addresses the issue of the amount of information that can be perceived via stimuli coming from wrist worn tactors, given the recipient is not expecting or attentive to the potential occurrence of an alert. Assuming apparel like wrist watches with embedded tactors to represent the alert delivery platform, we investigaterespecting physiognomical properties of tactile perceptionthe effectiveness of different tactor placements. We compare the case of embedding 4 tactors underneath the "face" of the wrist watch, against the case of embedding it into the wristband ("wrist"). A user study of 1,823 trials has been conducted involving recipients exposed to different levels of engagement in a certain activity. The experiments show, that the amount of information perceived via spontaneous tactile alerts ranges from 1.90-2.49 bits at low, to 1.59-2.41 bits at high levels of engagement. The "wrist" tactor placement achieves a 41.6 % higher perception bit rate than the "face" tactor placement.

show abstract

Section: Introductionmentioning

confidence: 99%

Tactor placement in wrist worn wearables

Matscheko

Ferscha

Riener

et al. 2010

International Symposium on Wearable Computers (ISWC) 2010

Self Cite

View full text Add to dashboard Cite

show abstract

“…The agents reside on cells of a spatial grid. We have used Moore's neighborhood to represent the surrounding of an agent which has been a popular strategy in many cell-based spatial configurations [25].…”

Section: A Simulation Setupmentioning

confidence: 99%

Conditions Facilitating the Aversion of Unpopular Norms: An Agent-Based Simulation Study

Zareen¹,

Zafar²,

Zia³

2016

ijacsa

Self Cite

View full text Add to dashboard Cite

Abstract-People mostly facilitate and manage their social lives adhering to the prevalent norms. There are some norms which are unpopular, yet people adhere to them. Ironically, people at individual level do not agree to these norms, but, they still follow and even facilitate them. Irrespective of the social and psychological reasons behind their persistence, sometimes, for societal good, it is necessary to oppose and possibly avert the unpopular norms. In this paper, we model theorydriven computational specifications of Emperor's Dilemma into an agent-based simulation, to understand the the conditions that result in emergence of unpopular norms. The reciprocal nature of persistence and aversion of norms, thus, is utilized to define situations under which these norms can be changed and averted. Simulation is performed under many interesting "what-if" questions. The simulation results reveal that under high density conditions of agent population with a high percentage of norm aversion activists, the aversion of unpopular norms can be achieved.

show abstract

“…Korhonen et al's [7] work combined a fluid-dynamics-based fire simulation with a field-based pedestrian model. Zia [20] investigated agent cognitive models when interacting with technological assistance in the form of a guidance belt [17] during emergency evacuation. These agents model emotional states and exchange of route information and leader-following.…”

Section: Related Workmentioning

confidence: 99%

Problem Decomposition for Evacuation Simulation Using Network Flow

Murphy

Brown

Sreenan

2012

2012 IEEE/ACM 16th International Symposium on Distributed Simulation and Real Time Applications

View full text Add to dashboard Cite

Abstract. Simulation of building evacuations can be a powerful tool for predicting evacuation outcomes, but for this prediction to be useful it must be produced in a timely manner. The building evacuation outcomes are dependent on the movement decisions of the occupants, but simulating all possible combinations of occupant decisions is infeasible. Our contribution is a novel technique using building structure knowledge in the form of a Network Flow Graph to determine where and when occupants might interact with one another. We decompose the problem into non-interacting groups, to be simulated separately, which leads to a significant simulation workload reduction.Keywords: evacuation monitoring, multi-agent simulation, distributed simulation, network flow graph, problem decomposition IntroductionSimulation of building evacuation during emergencies is a powerful tool for evaluating building safety and prediction of evacuation outcomes [1]. Simulating the movement of evacuating pedestrians can provide useful information to building designers and to fire safety officials, including evacuation time estimates and locations at risk of traffic congestion or evacuee injury [1][2][3][4][5][6][7]. We make use of a 2D vector-space pedestrian simulator to simulate the individual movements of pedestrians in the building. This simulator provides a realistic model of pedestrian movement but is computationally intensive compared to simpler models such as Cellular Automata [2,4,10] or Graph-based simulations [5]. The usefulness of any prediction information is contingent on both the timeliness and the accuracy of the simulation that generated it. Since a real evacuation involves autonomous human actors and uncertain hazard spread, to ensure that the simulations cover likely scenarios we must run many different scenarios. The more we can reduce the simulation time, the more scenarios we can consider, and the more useful the results will be. In this paper, we investigate the problem of how to cover a wide range of scenarios without an excessive increase in computation time.We assume that clusters of individuals in an evacuation will behave as a group, and once they have formed a group all members will follow the same route out of the building. We reduce the amount of simulation by limiting our attention to the most likely routes for each initial group. However, different groups may meet during the evacuation and cause congestion, and may form into larger groups to continue the evacuation. Since congestion slows down the evacuation, and puts the participants at risk, we must investigate the interaction of the different groups. Even for small numbers of likely routes, this group interaction quickly produces an excessively large simulation space. We reduce the complexity of the problem by quickly generating possible group interactions using Network-Flow Graph analysis, identifying groups and routes which do not interact, distributing the simulation of those local scenarios to different processors, and then combining the results to pro...

show abstract

LifeBelt: Silent Directional Guidance for Crowd Evacuation

Cited by 37 publications

References 8 publications

Tactor placement in wrist worn wearables

Tactor placement in wrist worn wearables

Conditions Facilitating the Aversion of Unpopular Norms: An Agent-Based Simulation Study

Problem Decomposition for Evacuation Simulation Using Network Flow

Contact Info

Product

Resources

About