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When the range of single-hop wireless communication is limited by distance or harsh radio propagation conditions, relays can be used to extend the communication range through multihop relaying. This paper targets the need in certain scenarios for rapid deployment of these relays when little or nothing is known in advance about a given environment and its(More)
The neuropoietic cytokine leukemia inhibitory factor (LIF) can act as a trophic factor, enhancing neuronal survival, and as a differentiation factor altering neuronal and glial gene expression. LIF also plays a role in the response to injury of the peripheral nervous system, as indicated by an increase in the amount of its mRNA within nonneuronal injury(More)
Channel-adaptive relaying has recently been proposed as a means to exploit spatial and temporal diversity in multihop ad hoc networks with fading. In conjunction with appropriate routing protocols, adaptive relaying enables each forwarding node in a multihop path to dynamically select the next-hop relay as a function of the measured (time-varying) channel(More)
Basal lamina-rich extracts of Torpedo californica electric organ contain a factor that causes acetylcholine receptors (AChRs) on cultured myotubes to aggregate into patches. Our previous studies have indicated that the active component of these extracts is similar to the molecules in the basal lamina which direct the aggregation of AChRs in the muscle fibre(More)
We describe a multilayer connection control architecture for broadband communications. A graph framework is introduced to describe network layers of network design, path configurations, dynamic call routing, burst switching, and ATM cell switching. These hierarchical layers of switching are performed at decreasing time scales, respectively. Switching at the(More)
— This paper presents the empirical results and analysis of a link variability study for an indoor, stationary 802.11 network subject to external interference. The objective is to characterize the relationships between the packet loss rate on a link and the transmitter-receiver distance, the SNR as reported by the 802.11 card, and time. Experimental results(More)