Cyrille Bertelle

Normandie Univ - Le Havre

Data access control is a crucial aspect of data management. Actors who want to share data need systems to manage consent in order to decide who can access their data. This guarantees the privacy of data, which is often sensitive. As a secure distributed ledger, the blockchain is widely used today to manage consent for data access. However, a blockc...

The maritime industry is moving towards a digital ecosystem to achieve substantial mutual profits. To achieve this, there have been attempts to combine existing, disjointed systems into more efficient, standardized platforms that can be scaled up. However, this transition has faced challenges. To address these issues, it is suggested that innovativ...

Based on adaptive-impulsive control method, synchronization of uncertain complex networks with heterogeneous nodes is considered in this paper. A novel control protocol is derived for the proposed uncertain complex networks model, which guarantee the achievement of synchronization and identification of uncertain node’s parameters. Further, a simple...

The maritime sector is the main contributor to global trade but has generally been weakened by its composite anatomy, miscellaneous information sources and systems, and dispersed processes. In this regard, the innovative blockchain technology, characterized by its distinctive features: distribution, immutability, and transparency, promotes great tr...

This article is part of the Com2SiCa research, which seeks two objectives: firstly, to understand the diversity of human behavior and the way in which it can evolve during a major, sudden and unpredictable disaster; and, secondly, to analyze the trajectories associated with spontaneous decisions to evacuate (or not) the area where a disaster has oc...

This article is part of the Com2SiCa research, which seeks two objectives: firstly, to understand the diversity of human behavior and the way in which it can evolve during a major, sudden and unpredictable disaster; and, secondly, to analyze the trajectories associated with spontaneous decisions to evacuate (or not) the area where a disaster has oc...

Digitalization is becoming more omnipresent in the maritime sector, and actors are increasingly using technological solutions to gain competitiveness and efficacy. Generally, entities use distinct heterogeneous systems, making it challenging to integrate them into a commonly advantageous single and secure interconnected system. While maritime actor...

This article is part of the Com2SiCa research, which seeks two objectives: firstly, to understand the diversity of human behavior and the way in which it can evolve during a major, sudden and unpredictable disaster; and, secondly, to analyze the trajectories associated with spontaneous decisions to evacuate (or not) the area where a disaster has oc...

Many territories are implementing development strategies strongly rooted in ambitions in terms of digital innovation. These strategies aim not only regional planning, but also economic development and people’s quality of life. This refers to the concept of smart territories. To achieve their objectives, smart territories generally use citizens’ dat...

La prevención del riesgo de desastre se ha convertido en los últimos 30 años en un desafío social de gran relevancia en los países desarrollados, debido principalmente al aumento de las pérdidas financieras, la distribución desigual de las pérdidas humanas a escala planetaria y una mediatización "catastrófica" de cualquier evento. Para reducir la v...

Crowd dynamics has been of a great interest in the last decades, notably to understand and prevent emergency situations. In this field, computer simulations have a big part, due to the difficulty of making real life experiments. Many models have been created, at a macroscopic level as well as at a microscopic level, but emotional dimensions are rar...

Many territorial entities are seeing their prerogatives and regulatory powers enhanced with new “instruments” intended to foster the development of ecomobility. Taking as its focus the way that individuals make decisions about transportation modes, EM3 is a transport model designed to simulate the potential impacts of different regulatory measures...

This chapter proposes to generalize to a geographical context an innovative SIR-based model describing human collective behaviors in situations of disasters. The novelty of this work is to adopt a complex network approach in order to model the influence of the space on the transitions among one behavior and the others. This network model will be ap...

This book reflects the outcome of contribution by the plural community and of the interactions between disciplines. With the mass of data available through Information and Communication Technologies (ICT) in an unprecedented quantity since the Human History, it is now possible to access dimensions of knowledge that, though not hidden, could not be...

This paper presents a model of a logistic system. Our goal is to understand how such a system (with numerous stakeholders) behaves and evolves according to different constraints or scenarios. We adopted a complex system approach which leads us to propose an agent-based model coupled with dynamic graphs. It allows us to represent the properties, con...

Inside a logistic system, actors of the logistics have to interact to manage a coherent flow of goods. They also must deal with the constraints of their environment. The article's first goal is to study how macro properties (such as global performance) emerge from the dynamic and local behaviors of actors and the structure of the territory. The sec...

Nous avions développé précédemment un modèle multi-agent couplé à des graphes dynamiques pour représenter un système logistique. Ce modèle nous permet de simuler les mouvements de marchandises sur un territoire ainsi que le comportement des acteurs d'un tel système afin de suivre dynamiquement son évolution. Jusqu'à maintenant nous avons travaillé...

In this study, the mobile phone traces concern an ephemeral event which represents important densities of people. This research aims to study city pulse and human mobility evolution that would be arise during specific event (Armada festival), by modelling and simulating human mobility of the observed region, depending on CDRs (Call Detail Records)...

The modeling of logistic system is a major issue of logistic research. Several researches use data about flow of goods to extrapolate the evolution of logistic systems, but these data might be difficult to acquire. We propose a complex system approach with agents and dynamic graphs to model logistic systems. It allows us to describe the local prope...

This paper introduces the implementation of a computational agent-based financial market model in which the system is described on both microscopic and macroscopic levels. This artificial financial market model is used to study the system response when a shock occurs. Indeed, when a market experiences perturbations, financial systems behavior can e...

In this study, the mobile phone traces concern an ephemeral event which represents important densities of people. This research aims to study city pulse and human mobility evolution that would be arise during specific event (Armada festival), by modelling and simulating human mobility of the observed region, depending on CDRs (Call Detail Records)...

This paper introduces an original mathematical description for describing agents' decision-making process in the case of problems affected by both individual and collective behaviors in systems characterized by nonlinear, path dependent, and self-organizing interactions. An application to artificial financial markets is proposed by designing a mult...

Multiagent systems (MAS) provide a useful tool for exploring the complex dynamics and behavior of financial markets and now MAS approach has been widely implemented and documented in the empirical literature. This paper introduces the implementation of an innovative multi-scale mathematical model for a computational agent-based financial market. Th...

In this paper, our aim is to study the control of panic behavior in a non-identical network coupled with a model for human behaviors during catastrophic events, and to establish the link between control and synchroniza- tion of the network. We show how to model the domino effect in the case of a succession of disasters and exhibit a Hopf bifurcatio...

Vidéo lors de la conférence

Nous présentons dans ce papier la modélisation d'un système logistique à l'aide d'agents couplé à des graphes dynamiques. Nous avons adopté une approche système complexe dans laquelle on décrit les propriétés locales et les règles de fonctionnement de ces organisations pour comprendre comment les propriétés macroscopiques émergent. On présente égal...

This paper is about modeling and simulation of logistic systems. We define them as corridors established between a gateway port, where goods are imported, and urban areas, where the final distributors are located. The efficient management of the flow of goods operated on these corridors requires a structured territory and organized actors. Decentra...

In this paper, we present a model of logistic system with agents coupled with dynamic graph. We adopted a complex system approach to describe the local properties and functional rules of these organizations to understand how the macro properties emerge. As a result, we present how a local parameter, which represents the attractiveness of ports, aff...

This study investigates the mobile phone data during ephemeral event (Armada). The statistical techniques have been used for modeling human mobility collectively and individually. The undertaken substantial parameters are: inter-event times, travel distances (displacements), and radius of gyration. They have been analyzed and simulated using comput...

In this paper, we present a new approach using a non-hierarchical method in graph environment and the concept of artificial ants for both clustering and visualization using Tulip framework. This model can be presented to take into account data in blocks in an incremental way. It seems especially interesting to process binary data streaming. In this...

The communication networks (mobile phone networks, social media platforms) produce digital traces from their usages. This type of information help to understand and analyze the human mobility in very accurate way. By these analyzes over cities, it can give powerful data on daily citizen activities, urban planners have in that way, relevant indicati...

Topology identification of complex networks is an important problem. Existing research shows that the synchronization of network nodes is an obstacle in the identification of network topology. Identification of the structure of the network presents an interesting challenge during the synchronization of complex networks. We developed a new method us...

Current Internet of Things (IoT) development requires service distribution over Wireless Sensor and Actor Networks (WSAN) to deal with the drastic increasing of network management complexity. Because of the specific constraints of WSAN, some limitations can be observed in centralized approaches. Multi-hop communication used by WSAN introduces trans...

The aim of this paper is to present some mathematical results concerning the PCR system (Panic-Control-Reflex), which is a model for human behaviors during catastrophic events. This model has been proposed to better understand and predict human reactions of individuals facing a brutal catastrophe, in a context of an established increase of natural...

In this paper we present a summary of our work which has proposed a new model for the construction of dynamics graphs. We present the state of the art in several approaches in swarm intelligence and clustering where researchers get inspiration from the numerous abilities of ants. Then we detail the construction of a chemical odor in ant species use...

The communication devices have produced digital traces for their users either voluntarily or not. This type of collective data can give powerful indications that are affecting the urban systems design and development. In this study mobile phone data during Armada event is investigated. Analyzing mobile phone traces gives conceptual views about indi...

A logistic system is characterised by a set of actors who interact together to manage coherent flow of goods. The constraints and behaviours of such a system lead it to be structured and organised. The goal of this paper is to provide a model to understand how the macro organisation emerges from the dynamics and the local rules (actors and infrastr...

In this study, the mobile phone traces concern an ephemeral event which represents important densities of people. This research aims to study city pulse and human mobility evolution that would be arise during specific event(Armada festival), by modeling and simulating human mobility of the observed region, depending on CDRs (Call Detail Records) da...

Modern communication networks and social networks are the main tunnels of knowledge diffusion. Knowledge diffusion in complex networks is different from the epidemic-like information spreading, because individuals are willing to learn and spread knowledge to their friends and the learning process can hardly be achieved in a few conversations. In th...

The research objectives are exploring characteristics of human mobility patterns, subsequently modelling them mathematically depending on inter-event time ∆t and traveled distances ∆rparameters using CDRs (Call Detailed Records). The observations are obtained from Armada festival in France. Understanding, modelling and simulating human mobility amo...

Understanding, modeling and simulating human mobility among urban regions is very challengeable effort. It is very important in rescue situations for many kinds of events, either in the indoor events like evacuation of buildings or outdoor ones like public assemblies, community evacuation, in exigency situations there are several incidents could be...

The developpment of the Internet of Things (IoT) concept revives Responsive Environments (RE) technologies. Nowadays, the idea of a permanent connection between physical and digital world is technologically possible. The capillar Internet relates to the Internet extension into daily appliances such as they become actors of Internet like any hu-man....

Communication devices (mobile networks, social media platforms) are produced digital traces for their users either voluntarily or not. This type of collective data can give powerful indications on their effect on urban systems design and development. For understanding the collective human behavior of urban city, the modeling techniques could be use...

A distributed computing system behaves like a complex network, the interactions between nodes being essential information exchanges and migrations of jobs or services to execute. These actions are performed by software agents, which behave like the members of social networks, cooperating and competing to obtain knowledge and services. The load bala...

As an important technique for data mining, clustering often consists in forming a set of groups according to a similarity measure such as hamming distance. In this paper, we present a new bio-inspired model based on artificial ants over a dynamical graph of clusters using colonial odors and pheromone-based reinforcement process. Results analysis ar...

Over the last thirty years, the prevention of risks and disasters has become a major issue for societies in developed countries. These concerns have to be linked with important financial losses, the unequal repartition of global casualties and a wide media coverage of all catastrophic events. Our societies, independently of their development level,...

This paper presents the modelling of a logistic corridor. It integrates the port and the metropolitan logistics connected by an interface. Such a system can be seen as complex. A multi-scale point of view is adopted thanks to an agent-based approach which is coupled with dynamic graphs in order to represent in the one hand the actors involved in th...

We present in this paper a new bio-inspired algorithm that dynamically creates groups of data. This algorithm is based on the concept of artificial ants that move together in a complex manner with simple localization rules. Each ant represents one datum in the algorithm. The moves of ants aim at creating homogeneous groups of data that evolve toget...

This work is about the modelling of a logistic corridor in order to understand how a logistic system is structured and organised. An agent-based approach and dynamic graphs are used to integrate spatial constraints and functional rules of such a complex system which can be studied with a multi-scale point of view. An implementation on a simulation...

Nous distinguons trois visions de la complexité afin de clarifier les contours de la recherche dans ce domaine. Nous utilisons le démon de Laplace comme référence pour présenter ces visions. La vision 1 brise le rêve du démon de Laplace en identifiant des systèmes particuliers qui lui résistent en mathématiques, physique et informatique. La vision...

A Distributed Computing System behaves like a complex network, the interactions between nodes being essentially information exchanges and migrations of jobs or services to execute. The load balancing consists in distributing the load evenly between system nodes. It aims at enhancing the resource usage. A load balancing strategy specifies scenarios...