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5 results on '"Lisi FA"'

1. Collision avoidance dynamics among heterogeneous agents: The case of pedestrian/vehicle interactions

Author

Esposito, F, Basili, R, Ferilli, S, Lisi, FA, Bandini, S, Crociani, L, Feliciani, C, Gorrini, A, Vizzari, G, Esposito, F, Basili, R, Ferilli, S, Lisi, FA, Bandini, S, Crociani, L, Feliciani, C, Gorrini, A, and Vizzari, G

Abstract

The dynamics of agent-based models and systems provides a framework to face complex issues related to the management of future cities, such as transportation and mobility. Once validated against empirical data, the use of agent-based simulations allows to envision and analyse complex phenomena, not directly accessible from the real world, in a predictive and explanatory scheme. In this paper, we apply this paradigm by proposing an agent-based simulation system focused on pedestrian/vehicle interactions at non-signalized intersections. The model has been designed based on the results gathered by means of an observation, executed at a non-signalized intersection characterized by a relevant number of pedestrian-car accidents in the past years. Manual video-tracking analyses showed that the interactions between pedestrians and vehicles at the zebra cross are generally composed of three phases: (i) the pedestrian freely walks on the side-walk approaching the zebra; (ii) at the proximity of the curb, he/she slows down to evaluate the safety gap from approaching cars to cross, possibly yielding to let the car pass (appraising); (iii) the pedestrian starts crossing. The overall heterogeneous system is composed of two types of agents (i.e. vehicle and pedestrian agents), defining the subjects of the interactions under investigation. The system is used to reproduce the observed traffic conditions and analyse the potential effects of overloading the system on comfort and safety of road users.

Published
2017

3. Research on Wideband Differential-Mode Current Injection Testing Technique Based on Directional Coupling Device

Author

Xiaodong Pan, Guanghui Wei, Xinfu Lu, Lisi Fan, and Xing Zhou

Subjects
Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Cellular telephone services industry. Wireless telephone industry, HE9713-9715
Abstract

This paper presents a new kind of differential-mode current injection test method. The equal response voltage on the cable or the antenna port of the equipment under test (EUT) is regarded as equivalent principle for radiation and injection test. The injection and radiation response analysis model and the injection voltage source extrapolation model in high intensity radiated field are established. The conditions of using differential-mode current injection as a substitute for radiation are confirmed. On the basis of the theoretical analysis, the function and structure design scheme of the directional coupling device is proposed. The implementation techniques for the single differential-mode current injection method (SDMCI) and the double differential-mode current injection method (DDMCI) are discussed in detail. The typical nonlinear response interconnected systems are selected as the EUT. The test results verify the validity of the SDMCI and DDMCI test methods.

Published
2014
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4. Collision avoidance dynamics among heterogeneous agents: The case of pedestrian/vehicle interactions

Author

Stefania Bandini, Luca Crociani, Andrea Gorrini, Giuseppe Vizzari, Claudio Feliciani, Esposito, F, Basili, R, Ferilli, S, Lisi, FA, Bandini, S, Crociani, L, Feliciani, C, Gorrini, A, and Vizzari, G

Subjects
Scheme (programming language), Computer science, Distributed computing, 05 social sciences, Collision avoidance, 02 engineering and technology, Pedestrian, Simulation system, Agent-based modelling, Dynamics (music), Face (geometry), 0502 economics and business, Traffic conditions, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, computer, 050212 sport, leisure & tourism, Simulation, Intersection (aeronautics), computer.programming_language
Abstract

The dynamics of agent-based models and systems provides a framework to face complex issues related to the management of future cities, such as transportation and mobility. Once validated against empirical data, the use of agent-based simulations allows to envision and analyse complex phenomena, not directly accessible from the real world, in a predictive and explanatory scheme. In this paper, we apply this paradigm by proposing an agent-based simulation system focused on pedestrian/vehicle interactions at non-signalized intersections. The model has been designed based on the results gathered by means of an observation, executed at a non-signalized intersection characterized by a relevant number of pedestrian-car accidents in the past years. Manual video-tracking analyses showed that the interactions between pedestrians and vehicles at the zebra cross are generally composed of three phases: (i) the pedestrian freely walks on the side-walk approaching the zebra; (ii) at the proximity of the curb, he/she slows down to evaluate the safety gap from approaching cars to cross, possibly yielding to let the car pass (appraising); (iii) the pedestrian starts crossing. The overall heterogeneous system is composed of two types of agents (i.e. vehicle and pedestrian agents), defining the subjects of the interactions under investigation. The system is used to reproduce the observed traffic conditions and analyse the potential effects of overloading the system on comfort and safety of road users.

Published
2017

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