This paper presents a generic processing architecture as well as tools and approaches for supporting road monitoring services. More precisely, a small-scale simulator is presented for experimenting the design and the implementation of vision-based vehicular embedded systems in indoor environments, i.e. a test bench for embedded system laboratories. This simulator employs embedded electronic systems, sensors as well as hybrid communication and computational technologies. In particular, these technologies are exploited in order to produce our cooperative and real-time embedded system for enhancing road monitoring services. This type of simulator can be used for developing a variety of innovative road monitoring services based on the detection of dynamical points of interest. Notably, a system has been implemented in the case of a simulated road service to aid police agency for the recognition of wanted individuals and stolen vehicles. Experimental results show the potential of the simulator for fostering the development of a next generation of vehicular embedded system as well as for the emergence of participatory road services.

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L'effet du déficit hydrique, au niveau de la phase photochimique du photosystème II (PSII) chez deux variétés d'olivier à huile « Chetoui » et « Chemlali » a été étudié à travers les paramètres suivants : le potentiel hydrique foliaire de base (Ψ Hb ), le rendement quantique du PSII (ΦPSII), le rendement quantique maximal du PSII (Φ max PSII), le taux du transfert des électrons (J T ) et le quenching photochimique (qP). Les résultats obtenus montrent une diminution du potentiel hydrique foliaire et une baisse de l'efficience quantique du photosystème II. Par ailleurs, le taux de transfert des électrons et le quenching photochimique ont montré une augmentation consécutive au déficit hydrique. Ces modifications présentent quelques différences entre les variétés. Ces constatations sont discutées en relation avec les stratégies développées par l'olivier pour végéter dans les milieux arides et son adaptation à la sécheresse.

The IPv6 over Low power Wireless Personal Area Networks (6LoWPANs) have turned out to be one of the most emerging field in Wireless Sensor Networks (WSNs) which can be integrated with Internet technology. 6LoWPAN network consists of heterogeneous wireless sensors which have high resource-constraints such as bandwidth, processing power, memory, energy, etc. The resource-constraints put forth many challenges to apply the available standard security protocols such as Transport Layer Security (TLS), Internet Protocol Security (IPSec), Internet Key Exchange version 2 (IKEv2), etc., for the interconnection of Heterogeneous Wireless Sensor Networks (HWSNs) with Internet. To overcome these situations, the researchers aimed to reinforce and adapt the end-to-end security between Internet and the IP enabled sensor networks. The above mentioned security protocols are not modified at the Internet end point in HWSNs. Hence we are proposing a novel Cooperative Key Exchange System (CKES) by using the concept of Chinese Remainder Theorem (CRT). We have used NS2 simulator to implement the proposed concept and also compared with IKEv2. All Rights Reserved

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