Here, we present insights into human contact-control strategies by defining conditions to determine whether a human controls a contact state, empirically analyzing object-to-environment contact geometry data obtained from human demonstrations in a haptic simulation environment, and testing hypotheses about underlying human contactcontrol strategies. Using haptic demonstration data from eleven s...

In this paper we report on a field study comparing a commercial pedestrian navigation system to a tactile navigation system called Tactile Wayfinder. Similar to previous approaches the Tactile Wayfinder uses a tactile torso display to present the directions of a route’s waypoints to the user. It advances those approaches by conveying the location of the next two waypoints rather than the next o...

In wireless network simulation analysis, researchers tweak mobility metrics, such as the speed or the pause time of the nodes, to get different stability levels of the network. Meanwhile, in theoretical analysis, link failure rate is widely used to model the stability of a wireless network. This paper presents an analysis of a simplified mobility model and shows that the link failure rate is po...

This paper proposes several nonlinear control strategies for trajectory trackingof a quadcopter system based on the property of differential flatness. Its origi-nality is twofold. Firstly, it provides a flat output for the quadcopter dynamicscapable of creating full flat parametrization of the states and inputs. Moreover,B-splines characterizations of the flat output and the...

Accurate mobility models are needed to simulate the physical movement of nodes in a highly-dynamic aeronautical network. The fundamental problem with many synthetic mobility models is their random, memoryless behavior. Airborne ad hoc networks require a flexible memory-based 3-dimensional mobility model. We present a new 3-dimensional implementation of the Gauss-Markov mobility model for airbor...

The lack of contemporaneous end-to-end paths often characterize mobile computing environments, for which Delay Tolerant Networking is designed. In this work, we present a novel routing protocol using Virtual Repositories to assist in location-based forwarding when the location of a destination node is unknown. We compare the protocol to other existing protocols under two mobility models, Random...

Routing Protocol performance is strongly affected by user or node mobility in Mobile Ad hoc Network. Performance of any routing protocol for Mobile Ad Hoc Network is investigated and assessed using simulator. Network Simulator 2 uses various mobility models to mimic mobility patterns. Simulating a precise real life user/node mobility pattern is difficult. The ns-2 mobility models attempt throug...