OBJECTIVES We examined the relationships between mobility characteristics and sexual risk behaviors among male and female migrant market vendors in Almaty, Kazakhstan. METHODS Participants completed a structured interview covering sociodemographics, mobility characteristics, sexual behaviors, and biomarkers for HIV, HCV, and syphilis. We used multivariate analyses to examine associations betw...

Energy is an important issue in designing wireless sensor networks. Coverage and connectivity are not of less important since they are necessary for the network to be operational. In this work, we consider the case of wireless video sensor networks where some sensors have visual capabilities. We study the benefit of having some mobile nodes able to move in the network field so coverage and conn...

In this paper, we propose an ad-hoc on-demand distance vector routing algorithm for mobile ad-hoc networks taking into account node mobility. Changeable topology of such mobile ad-hoc networks provokes overhead messages in order to search available routes and maintain found routes. The overhead messages impede data delivery from sources to destination and deteriorate network performance. To ove...

Cross-layer mechanism, for which a protocol locating at a given layer uses information issued from other layers, may enhance the mobile networks performance. Some of those mechanisms are based on mobility metrics. For example, the establishment of a route by choosing less mobile nodes could improve the routing protocol. In this paper, we study the ability of mobility metrics to reflect the mobi...

A hybrid atmospheric pressure ion mobility spectrometer is described which exhibits resolving power approaching the diffusion limit for singly and multiply charged ions (over 200 for the most favorable case). Using an electrospray ionization source and a downstream quadrupole mass spectrometer with electron multiplier as detector, this ESI-IMS-MS instrument demonstrates the potential of IMS for...

One of the best mobility metrics is the Link Duration (LD) that presents how long two nodes are connected. OLSR is one of the most popular ad-hoc routing protocols. Multipoint Relays (MPR) is used by OLSR for controlled flooding. In this paper, we introduce a new approach to select a MPR in OLSR by using the simplest modification and no additional packet header. This approach introduces the ide...

The current duration of a link in a mobile wireless ad hoc network (MANET) has important information to offer with respect to its stability. Unlike location or signal strength methods, life measurements implicitly includes the effects of true propagation mechanisms, mobility space geometry, power control mechanisms and other phenomena that are ignored or simplistically modeled in the methods me...

We propose a mobility-assisted on-demand routing algorithm for mobile ad hoc networks in the presence of location errors. Location awareness enables mobile nodes to predict their mobility and enhances routing performance by estimating link duration and selecting reliable routes. However, measured locations intrinsically include errors in measurement. Such errors degrade mobility prediction and ...

UK commentators have noted for some time that the structure of the UK housing market may be detrimental to labour market flexibility. The early 1990s experience of negative housing equity which affected over 20% of home buyers may have “locked” home owners into property, reducing mobility and worsening further the flexibility of the labour market. The present paper uses UK household longitudina...