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We consider wireless ad hoc networks in which each connection (file) traverses only one hop. We assume that files arrive for service at each link and a file departs when all its packets have been transmitted. The file size distribution can be arbitrary, but the file sizes are assumed to be bounded. We assume that a window flow control protocol regulates the injection of packets from each file i...

In the simple case of a constant equation of state, redshift distribution of collapsed structures may constrain dark energy models. Different dark energy models having the same energy density today but different equations of state give quite different number counts. Moreover, we show that introducing the possibility that dark energy collapses with dark matter (“inhomogeneous” dark energy) signi...

BACKGROUND Multiple Imputation as usually implemented assumes that data are Missing At Random (MAR), meaning that the underlying missing data mechanism, given the observed data, is independent of the unobserved data. To explore the sensitivity of the inferences to departures from the MAR assumption, we applied the method proposed by Carpenter et al. (2007).This approach aims to approximate infe...

Temperature drives development in insects and other ectotherms because their metabolic rate and growth depends directly on thermal conditions. However, relative durations of successive ontogenetic stages often remain nearly constant across a substantial range of temperatures. This pattern, termed 'developmental rate isomorphy' (DRI) in insects, appears to be widespread and reported departures f...

We present a low-cost, decentralized algorithm for the problem of selecting host IDs in peer-to-peer systems. The problem arises in the context of distributed hash tables (DHTs). Our algorithm is the first one with the following properties: (a) both arrivals and departures of hosts are handled, (b) partition balance ratio is guaranteed to be at most 4, (c) at most one existing ID is re-assigned...

Testing for Hardy-Weinberg proportions (HWP) is routine in almost all genetic studies of natural populations, but many researchers do not demonstrate a full understanding of the purposes of these tests or how to interpret the results. Common problems include a lack of understanding of statistical power and the difference between statistical significance and biological significance, how to inter...

The "attachment" metaphor has labeled a process, of which infant protests during maternal departures have served as a presumably.unlearned index. Within social-eonditioning theory, if. and how, such infant protests could be acquired was examined by (a) providing stimuli to the child via routine maternal behaviors (visual, verbal and movement orientations) during mothers' departures and (b) moth...