Jaafar Gaber

• PhD, HDR
• https://www.femto-st.fr/en/The-Institute/introduction at University of Technology of Belfort-Montbéliard

Federated learning (FL) is an advanced technique in machine learning that ensures privacy while enabling multiple devices or clients to jointly train a model. Instead of sharing their private data, each device trains a local model on its own data and transmits only the model updates to a central server. However, FL systems face security threats suc...

Self-reconfiguration of modular robots is one of the most challenging problems in the robotics field. The objective is to determine how a set of identical modular robots, with local knowledge of the system and limited capacities, can reorganize themselves into a target topology or shape. The problem has received great interest from the research com...

A new spectrum sharing protocol with simultaneous wireless information and power transfer (SWIPT) is proposed to cope with the increasingly prominent problem of spectrum and energy scarcity. It operates within a cognitive radio network (CRN) in the context of cellular IoV (C-IoV), enabling bidirectional communication between two vehicles parked wit...

This paper introduces a novel cryptographic approach based on the continuous logarithm in the complex circle, designed to address the challenges posed by quantum computing. By leveraging its multi-valued and spectral properties, this framework enables the reintroduction of classical algorithms (DH, ECDSA, ElGamal, EC) and elliptic curve variants in...

Injection molding is a crucial manufacturing technology for producing complex, high-quality parts at scale, making it essential in various industries, including consumer electronics and automotive sectors. However, a lack of understanding about how injection parameters impact common defects like sink marks, short shots, and warpage often limits the...

This research investigates advanced morphing skin technologies for aerospace applications, with a particular focus on leveraging the unique properties of graphene. Morphing aircraft require wing skins that are both flexible and capable of withstanding aerodynamic forces. Traditional materials often fall short in achieving the necessary balance betw...

This study investigates the active matter dynamics of Escherichia coli bacteria in a polluted fluid environment using computational simulation modeling. The key focus is on understanding the interplay between individual bacterial flagella propulsion and the collective behavior of the bacterial active matter system. The simulation results reveal the...

This paper proposes a drone-assisted NOMA communication system equipped with a reconfigurable intelligent surface (RIS). Given the Line-of-Sight nature of the Air-to-Ground link, a more realistic Rician fading environment is chosen for the study of system performance. The user’s outage performance and secrecy outage probability of the RIS-UAV-assis...

In many practical communication environments, traditional feature extraction methods in spectrum sensing fail to fully exploit the information of primary users. Additionally, conventional machine learning methods have weak learning capabilities, making it difficult to maintain efficient and stable spectrum sensing performance in complex noise envir...

In cognitive radio networks, channel assembling allows secondary users (SUs) to expand network capacity and improve spectrum utilization. Scheduling strategies only based on heterogeneous service classification cannot guarantee the delivery priority of vital elastic services in special scenarios such as emergency rescue. Therefore, a priority sched...

In the context of M2M communications, security presents a significant challenge for researchers due to complexities introduced by the large deployment, decentralization, and heterogeneity of devices. Conventional security solutions often struggle when applied to M2M systems, primarily due to the constraints imposed by resource-limited devices. This...

Comprehensive occupancy information in smart buildings has become more imperative in order to develop new control strategies in energy management systems. Several techniques can be used to collect occupancy information considering accurate sensing techniques, such as passive infrared (PIR), carbon dioxide (CO2) and different types of cameras (i.e.,...

Federated Learning (FL) is a crucial technology in decentralized Machine Learning (ML), prominently used within Internet of Things (IoT) networks to enhance data privacy. However, it is threatened by poisoning attacks, where harmful data alterations can significantly disrupt learning processes. This paper introduces a novel solution, Entropy-based...

Programmable matter represents a system of elements whose interactions can be programmed for a certain behavior to emerge (e.g. color, shape) upon suitable commands (e.g., instruction, stimuli) by altering its physical characteristics. Even though its appellation may refer to a morphable physical material, programmable matter has been represented t...

Let M be a von Neumann algebra without central summands of type I. We are studying conditions that an additive map L on the algebra of locally measurable operators has the standard form, that is equal to the sum of an additive derivation and an additive center-valued trace.

In many practical communication environments, the presence of uncertain and hard-to-estimate noise poses significant challenges to cognitive radio spectrum sensing systems, especially when the noise distribution deviates from the Gaussian distribution. This paper introduces a cutting-edge multi-antenna spectrum sensing methodology that synergistica...

A programmable shape memory device comprising a deformable layer, one surface of which forms an outer surface of the device. The deformable layer relies, at least in part, on a set of individual shape-memory mechanical actuators, says AMFI. The AMFIs are distributed on a surface of a support. The AMFIs extend between the surface of the support and...

This paper proposes a multifrequency seamless dual-link handover scheme based on beamforming for the high-speed railway (HSR) communication, i.e., when the train travels to the edge of overlapping area of the adjacent two cells, a gain beam is assigned to the overlapping area by the target base station (BS) using a beamforming technique to cover th...

The integration of electric vehicles (EV) into the global car fleet has seen a major shift boosted by the new environmental regulations. The adoption of this low-carbon vehicle is hampered by several constraints in emerging countries and particularly in Morocco, e.g. constraints related to the infrastructure (land purchasing for charging stations,...

The complexity of the channel condition in the Internet of vehicles (IoV) may increase the bit error rate (BER) of the intelligent vehicle terminals, resulting in data transmission failures or errors. Therefore, it is necessary to improve the performance of communication protocols under error-prone channel conditions. This article investigates the...

In cognitive radio networks (CRNs), the performance of the primary users (PUs) may suffer adverse effects from the secondary users (SUs) if the spectrum of PUs is haphazardly shared with SUs. In this paper, we propose a hybrid cognitive cooperative protocol based on orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) that imp...

In this work, a Hardware-In-the-Loop (HIL) framework is introduced for the implementation and the assessment of predictive control approaches in smart buildings. The framework combines recent Internet of Things (IoT) and big data platforms together with machine-learning algorithms and MATLAB-based Model Predictive Control (MPC) programs in order to...

Nowadays, electric vehicles (EV) are increasingly penetrating the transportation roads in most countries worldwide. Many efforts are oriented toward the deployment of the EVs infrastructures, including those dedicated to intelligent transportation and electro-mobility as well. For instance, many Moroccan organizations are collaborating to deploy ch...

The programmable matter has paved the way for the emergence of new paradigms in the fields of computer science, design, Haptics, and material science. Several kinetic-based approaches have been developed to represent an object via surface deformation using a set of patterned actuators. Therefore, a loss of shape is noticed in the physical rendering...

Building models and their connected subsystems are often simulated as standalone entities. However, in order to monitor a system′s reactions to changing parameters and to assess its energy efficiency, it must be exposed to the actual dynamic context of the building under study. Hence, frameworks assessing co-operative simulation of buildings and th...

Programmable matter is a system of elements (e.g., smart matters, modular robots, …) that is programmed via user input or autonomous sensing to form a certain shape, by altering its physical characteristics. This paper presents a programmable and reusable device to be used, for example in 4D prototyping and Haptics, using the shapeshifting abilitie...

Industrial companies are more and more interested in the use of artificial intelligence (AI) in the control and monitoring of their processes. They try to take advantage of the power of this technology in order to increase the level of automation and to build smarter machines with new capabilities of self-adaptation and self-control. Especially, th...

Based on two types of priority queues, this paper proposes a polling scheduling strategy with reserved channel (Ps-rc strategy) for predefined priority services in cognitive radio networks (CRNs). Channel assembling (CA) technology and spectrum adaptation (SA) technology are adopted to dynamically adjust the assembled channels of secondary users (S...

The evolution of the geo-positioning methods made Dead Reckoning (DR) one of the most important concerns due to its performance in indoor pedestrian localization systems. This paper focuses on implementing an approach that relies on physiological parameters to minimize additive velocity error due to noise in pedestrian DR systems.

During the past ten years, worldwide efforts have been pursuing an ambitious policy of sustainable development, particularly in the energy sector. This ambition was revealed by noticeable progress in the deployment and development of infrastructures for the production of renewable electrical energy. These infrastructures combined with the deploymen...

Information broadcasting in wireless network is a necessary building block for cooperative operations. However, the broadcasting causes increases the routing overhead. This paper brings together an array of tools of our adaptive protocol for information broadcasting in MANETs. The proposed protocol in this paper named WAODV (WAIT-AODV). This new ad...

The rapid development of aviation technology has made the application of unmanned aerial vehicles (UAVs) more popular in recent years. Due to the inadequate capability of a single UAV, flying ad hoc networks (FANETs), which consist of multiple different UAVs, not only break the limits of single UAV by introducing the cooperation between UAVs, but a...

In wireless sensor networks (WSNs), traffic flow congestion can reduce network performance. We propose a congestion control method for WSNs that use a cache state with a dual threshold in the router buffer to control congestion. In addition, the congestion is controlled by the channel transmission state that is monitored by the queuing variation te...

The core problem of cognitive radio networks is the accurate sensing and the efficient use of spectrum holes without interfering the communication of the primary system. This paper proposes a cooperative strategy with two full-duplex cognitive base stations (FDCBS) where in-band full-duplex technology and cognitive radio are integrated. If the prim...

Brevet d'invention

Wireless Sensor Networks (WSNs) are extensively used in monitoring applications such as humidity and temperature sensing in smart buildings, industrial automation, and predicting crop health. Sensor nodes are deployed in remote places to sense the data information from the environment and to transmit the sensing data to the Base Station (BS). When...

Vehicular ad-hoc networks (VANETs) are promising research areas which mainly include three communication modes: vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I) and hybrid vehicle communication (HVC). But most of the current research on HVC mode in which vehicle nodes and infrastructures coexist only focuses on the analysis of the optimal...

The purpose of this study is the improvement of real and virtual world interaction in real-time by uses of Kinect. We propose adding geometric shapes as a collision object for human body parts in augmented reality with real-time animations. In this work the concept of collision Avatar (CA) is presented. We will describe different methods which crea...

Abstract— While the number of web and desktop 3D applications continue to increase, users would like to create their own 3D avatars which will look exactly like them. The Kinect[1] can help to users to reach this goal; after scanning human by Kinect’s depth and RGB cameras it is possible to create almost the same 3D model including human faces and...

Wireless Sensor Networks (WSNs) are extensively used in monitoring applications such as humidity and temperature sensing in smart buildings, industrial automation, and predicting crop health. Sensor nodes are deployed in remote places to sense the data information from the environment and to transmit the sensing data to the Base Station (BS). When...

Programmable Matter aims at developing new smart system consisting of a hardware component and a programmable approach allowing the adaptation of its physical properties to programmable inputs or autonomous sensing. Such a system requires a multidisciplinary approach bringing together material science, mechatronics and software programming. In this...

Modelling and simulation of the behavior of a shape memory membrane for programmable matter 4D prototyping, November 2019, Systems Research and Behavioral Science DOI: 10.1002/sres.2650.

Programmable Matter aims at developing new smart system consisting of a hardware component and a programmable approach allowing the adaptation of its physical properties to programmable inputs or autonomous sensing. Such a system requires a multidisciplinary approach bringing together material science, mechatronics and software programming. In this...

This paper firstly analyzes the handover mechanism of vehicle-mounted base station technology in high speed railway system, and finds that the communication interruption of the physical layer will last for a period of time although the switch of MAC layer has been completed. In order to solve this problem, an improved switch mechanism is proposed i...

This paper presents an approach for tuning IoT activity in order to control the message transmission frequency to reduce energy consumption. More precisely, instead of letting an IoT sending out data periodically and monotonically, the approach allows the determination of wake-up, messages transmission and reception periods, when events occur at su...

Abstract—Cloud computing technology hosts application for users to accesses computing as services. Its application has been widely used and increases to become a part of enterprises’computing infrastructures. However, Cloud computing latency and request deadline fulfillment issues are among the major problems. Therefore, there is a need for a solut...

In almost all areas of the industry and more generally in the sector of development of manufacturing products, the realization of the product passes through several successive stages going from the design to the realization of the product. The most critical phase is prototyping because it is at this point that usually the most important decisions a...

Wireless Sensor Networks (WSNs) are extensively used in monitoring applications such as humidity and temperature sensing in smart buildings, industrial automation, and predicting crop health. Sensor nodes are deployed in remote places to sense the data information from the environment and to transmit the sensing data to the Base Station (BS). When...

Introduction Wireless Human Body Sensor Networks (WHBSNs) used in healthcare systems have widely attracted the attention of the research community [1]. We identify two categories of healthcare-oriented systems: vital status monitoring and remote healthcare surveillance. In vital status monitoring applications, sensors supervise their vital paramete...

One of the most significant difficulty in Wireless Sensors Network (WSN) is the development of an effective topology control method that can support the quality of the network, respect the limited memory and at the same time increase the lifetime of the network. This paper introduces a new approach by mixing a non-cooperative Game Theory technique...

In the last decade, many research works have been conducted to further promote the use of electric vehicles by developing newtechnologies and services. However, the management of their charging planning and scheduling is still a challenging task that needs to be addressed. The main issue is to reroute vehicles to the suitable charging stations with...

Several unmanned aerial vehicles (UAVs) flight in a formation fleet are used to improve the effectiveness of civilian missions such as firefighting, searching, rescuing, etc., as well as the success of military applications. The increase use of these cooperative systems in hazardous environments makes the reliability improvement essential in order...

Wireless sensor network (WSN) represents a very important research that targets a very large number of possible applications in healthcare, smart cities, environmental monitoring, military, industrial automation and recently in smart grids. It consists of three main components: a large number of nodes, gateways and software. WSN workload needs an u...

Drones have been recently an interesting subject of research due to their roles in accomplishing missions. Flying in a formation fleet, they form a cooperative communication system in order to improve the efficiency of the mission. For this reason, the reliability of the communication is essential to guarantee the overall performance of the fleet a...

Fleet flight of drones has been an interesting topic in the last years due to the advantages of the cooperative fleet of UAVs in both civilians and military applications. Fault Tree Analysis (FTA) is a well-known technique used to identify the causes that lead to the failure of a top event. In this paper, we aim to analyze the reliability of commun...

This paper presents a study for performance implementation of IEEE 802.11i WPA2 (Wi-Fi Protected Access 2) security protocol in Sensor Network applications. This research compared the implementation of the WPA2 security protocols over Sensor Networks to estimate the security impacts on sensor networks applications and evaluate the quality of servic...

In this paper, an effective Discrete Imperialist Competitive Algorithm (DICA) is proposed to solve the QoS-aware cloud service composition problem, which is known as a non-polynomial combinatorial problem. To improve the global exploration ability of DICA, as inspired by the solution search equation of Artificial Bee Colony (ABC) algorithm, a new d...

In recent years, there has been rapid and significant development of road transport technologies in order to reduce the number of killed and injured people on roads. These include safety technologies, emergency call systems (eCall), and advanced traveler information systems. The eCall system is an automatic in-vehicle emergency call service, which...

A wireless ad-hoc network is a decentralized type of wireless network, where communication does not rely on a pre-existing infrastructure, such as routers in wired networks or access points in infrastructure-based wireless networks. Ad-hoc communications are present in wireless sensor networks (WSNs), mobile ad-hoc networks (MANETs) and vehicular a...

Nanocommunication is a new paradigm that allows nanomachines to communicate using mechanisms, such as molecular-based, electromagnetic-based, acoustic-based, and nanomechanical-based mechanisms. A nanonetwork is formed of tiny nanomachines with limited sensing, computational, storage and power capabilities. In forming well connected nanonetwork, co...

This paper describes existing work related to the development of adaptive systems and approaches in ubiquitous and pervasive environments and sheds more light on how features from natural and biological systems could be exploited for engineering adaptive systems. Ubiquitous and pervasive systems are composed of different heterogeneous parts or enti...

The development of ubiquitous and pervasive computing systems requires new approaches and paradigms. Mobile agent based approaches have received a great attention for developing distributed applications. Agents are programs that can migrate from a machine to another in a network and perform tasks on distant machines. However, it is difficult to est...

Mobile Ad Hoc Networks (MANETs) are communication networks formed on the fly by radio-equipped mobile nodes without relying on any fixed infrastructure. Flooding is the simplest technique for information dissemination in ad hoc based networks, in which nodes disseminate a received message to all their neighbors. This algorithm leads to the broadcas...

Nanocommunication concepts have emerged as a new paradigm that allows nano-processing-elements to communicate using molecular-, acoustic-, mechanical-, or electromagnetic-based techniques. In this paper, the performances of the electromagnetic-based nanocommunication technique as an on-chip communication fabric for SoCs is evaluated. Simulations ha...

Very great research efforts have been made to further develop and promote the electric vehicles (EVs), their charging infrastructures and techniques in the last decades. However, little attention has been paid so far to the management of their charging planning with EV drivers' assistance of their assignment to adequate charging stations (CSs). The...