Layer IV circuitry in the rodent whisker-to-barrel pathway transforms the thalamic input signal spatially and temporally. Excitatory and inhibitory barrel neurons display response properties that differ from each other and from their common thalamic inputs. Here we further examine thalamocortical response transformations by characterizing the responses of individual thalamic barreloid neurons a...

Secure message transmission in Vehicular Ad Hoc Networks (VANETs) is a challenging task due to its highly dynamic nature. In VANETs, road side unit (RSU) transmits different types of service messages to those vehicles, who have subscribed for that type of message. Intermediate vehicles, those are not subscribed to that service may also receive the message due to broadcast nature of wireless med...

VANET that stands for Vehicular Ad Hoc Network is a powerful technology to provide the communication between vehicles and nearby RSUs (roadside units). It is a type of Mobile Ad Hoc Network (MANET) to provide the drivers with following services: such as safety warnings to protect them from traffic accidents, jammed traffic information, entertainment etc. In VANETs network topology changes becau...

Connectivity in vehicular ad hoc networks may degrade dramatically in sparse traffic and also high speed highways. In this paper we study a way to improve the connectivity by adding some extra nodes with higher transmission range which we call mobile base-stations. These nodes can also offer commercial services (e.g. advertisement, video, audio, etc.) to the vehicles on roads. Besides, the fina...

In recent years, automotive industry is experiencing an unprecedented transformation with the rise of digital technologies. While in past, acceleration, top speed, and mechanical design were most essential factors for purchasing automobile, electronics software innovations define characteristics future. One among such Advanced Driver Assistance System (ADAS). This innovation now considered as m...

In this paper, we present a WItness based Data priority mEchanism (WIDE) for vehicles in the vicinity of an accident to facilitate liability decisions. WIDE evaluates integrity data generated by these vehicles, called witnesses, event assure reliability be used making decisions and ensure that such are received from credible witnesses. To achieve this, introduces two-level assessment end-to-end...

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract Vehicular adhoc network is an emerging network which facilitates vehicular communication for the safety requirements. Each vehicle broadcasts messages to its neighboring vehicle as well as to the roadside units(RSUs). However this increases the con...

In Vehicular Ad Hoc Networks (VANETs), vehicles should report events to warn the drivers of unexpected hazards on the roads. While these reports can contribute to safer driving, VANETs suffer from various security threats; a major one is Sybil attacks. In these attacks, an individual attacker can pretend as several vehicles that report a false event. In this paper, we propose a secure event-rep...

This work addresses the intermittent connectivity observed in a vehicular ad hoc network and proposes a Disruption Tolerant Network (DTN) service that is shown to degrade gracefully in case of bad channel conditions or load increase, if compared to plain datagram transmission case. The considered infrastructure is a mesh network of road side units (RSUs) forming an overlay in which data can be ...

Road traffic is experiencing a drastic increase in recent years, thereby increasing the every day traffic congestion problems, especially in metropolitan areas. Governments are making efforts to alleviate the increasing traffic pressure, being vehicular density one of the main metrics used for assessing the road traffic conditions. However, vehicle density is highly variable in time and space, ...