Auto adaptation incluant une double mobilité logicielle et physique : Analyse par simulation dans le cadre des réseaux ad hoc

Dans ce papier, nous étudions les possibilités d'auto adaptation que pourrait offrir un calcul réparti incluant une double mobilité : d'une part une mobilité physique des sites supports d'exécution et, d'autre part, une mobilité des composants logiciels métiers ou clients. Cette mobilité de niveau logiciel est envisagée dans le contexte de mobilité physique des réseaux Ad hoc.Comme illustration, nous décrivons un exemple de service de localisation de services, ceux-ci étant vus comme mobiles. Ce service s'appuie sur la propagation de rumeurs et l'usage de promenades aléatoires par des agents légers dédiés. L’évaluation des performances d'un tel service est faite grâce un simulateur de réseaux Ad hoc.Mots-clés : réseaux ad hoc, agents mobiles, protocoles de routage, rumeurs, simulation, Madhoc

Charging electric vehicles on long trips and the willingness to pay to reduce waiting for charging. Stated preference survey in Norway

Technological developments in charging speed and battery capacity are leading to an increased use of electric vehicles (EV) for long trips, but the charging infrastructure network is too scarce to satisfy the growing energy needs. Few public charger stations are available outside urban areas, triggering long queues waiting for a vacant charger. A better understanding of charging behaviour on long trips is needed to optimise the provision and distribution of charging facilities. This research contributes to existing literature by estimating the willingness to pay for reducing waiting time for charging, as well as understanding the role of explanatory variables in influencing decisions about charging at public charging stations on long trips. Responses from a stated preference (SP) survey in Norway in 2021 were analysed with a mixed logit model. Results showed that price, waiting time, charging speed and facilities were significant variables for station characteristics, while for trip features, the distance to destination and remaining range, also play a significant role. Finally, if deciding to charge, respondents to charge the battery to a higher level rather than a small top-up. There is extensive heterogeneity in preferences across travellers

Impact of loganin on pro-inflammatory cytokines and depression- and anxiety-like behaviors in male diabetic rats

Behavioral disturbances are observed in most patients suffering from diabetes. According to some evidence, pro-inflammatory cytokines have a key role both in diabetes and behavioral disorders, such as anxiety and depression. In this study, the effect of chronic administration of loganin, as a bioflavonoid, was investigated on pro-inflammatory cytokines and depression- and anxiety-like behaviors in streptozotocin-induced diabetes in male Wistar rats. Blood levels of interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) were assessed by enzyme-linked immunosorbent assay method. Depression- and anxiety-like behaviors were evaluated by forced swimming test (FST), elevated plus maze (EPM), and open field test (OFT), respectively. Body weight was also measured before the interventions and after the experiments in all groups. Our findings show that loganin-treated animals had significantly lower serum concentrations of IL-6 and TNF-α compared with the diabetic group. In the EPM test, loganin treatment significantly increased the percentage of the open arm time and open arm entries. Moreover, loganin treatment significantly decreased the grooming time and restored distance traveled and center crossing in the OFT. However, it decreased immobility time in the FST. Loganin treatment also significantly restored body weight gain and attenuated blood glucose changes in the diabetic rats. These results indicate that loganin possibly alleviates depression- and anxiety-like behaviors associated with diabetes through lowering the blood glucose and pro-inflammatory cytokine levels. More research is required to show the exact mechanism of antidepressant and anxiolytic effects of loganin in diabetes