in this paper, the definition of meet-continuity on $l$-directedcomplete posets (for short, $l$-dcpos) is introduced. as ageneralization of meet-continuity on crisp dcpos, meet-continuity on$l$-dcpos, based on the generalized scott topology, ischaracterized. in particular, it is shown that every continuous$l$-dcpo is meet-continuous and $l$-continuous retracts ofmeet-continuous $l$-dcpos are al...

network sensors consist of sensor nodes in which every node covers a limited area. the most common use ofthese networks is in unreachable fields.sink is a node that collects data from other nodes.one of the main challenges in these networks is the limitation of nodes battery (power supply). therefore, the use oftopology control is required to decrease power consumption and increase network acce...

In a recent paper on ‘Estimating Species Trees from Unrooted Gene Trees’ Liu and Yu observe that the distance matrix on the underlying taxon set, which is built up from expected internode distances on gene trees under the multispecies coalescent, is tree-like, and that the underlying additive tree has the same topology as the true species tree. Hence they suggest to use (observed) average inter...

MOTIVATION It has been recognized that the topology of molecular networks provides information about the certainty and nature of individual interactions. Thus, network motifs have been used for predicting missing links in biological networks and for removing false positives. However, various different measures can be inferred from the structure of a given network and their predictive power vari...

Comparison between related species is a successful approach to uncover conserved and divergent principles of development. Here we studied the pattern of epithalamic asymmetry in zebrafish and medaka, two related teleost species with 115–200 million-year of independent evolution. We found that these species share a strikingly conserved overall pattern of asymmetry in the parapineal–habenular–int...

Comparison between related species is a successful approach to uncover conserved and divergent principles of development. Here we studied the pattern of epithalamic asymmetry in zebrafish and medaka, two related teleost species with 115–200 million-year of independent evolution. We found that these species share a strikingly conserved overall pattern of asymmetry in the parapineal–habenular–int...

Networks are an invaluable framework for modeling biological systems. Analyzing protein-protein interaction (PPI) networks can provide insight into underlying cellular processes. It is expected that comparison and alignment of biological networks will have a similar impact on our understanding of evolution, biological function, and disease as did sequence comparison and alignment. Here, we intr...