197 research outputs found
Secure Service Discovery in Home Networks
This paper presents an architecture for secure service discovery for use in home networks. We give an overview and rationale of a cluster-based home network architecture that bridges different, often vendor specific, network technologies. We show how it integrates security, communication, and service discovery to achieve a secure and trusted way of deploying services in a domestic environment
Generators, extremals and bases of max cones
Max cones are max-algebraic analogs of convex cones. In the present paper we
develop a theory of generating sets and extremals of max cones in . This theory is based on the observation that extremals are minimal
elements of max cones under suitable scalings of vectors. We give new proofs of
existing results suitably generalizing, restating and refining them. Of these,
it is important that any set of generators may be partitioned into the set of
extremals and the set of redundant elements. We include results on properties
of open and closed cones, on properties of totally dependent sets and on
computational bounds for the problem of finding the (essentially unique) basis
of a finitely generated cone.Comment: 15 pages, 1 figure; v2: new layout, several new references,
renumbering of result
WormBase: a multi-species resource for nematode biology and genomics
WormBase (http://www.wormbase.org/) is the central data repository for information about Caenorhabditis elegans and related nematodes. As a model organism database, WormBase extends beyond the genomic sequence, integrating experimental results with extensively annotated views of the genome. The WormBase Consortium continues to expand the biological scope and utility of WormBase with the inclusion of large-scale genomic analyses, through active data and literature curation, through new analysis and visualization tools, and through refinement of the user interface. Over the past year, the nearly complete genomic sequence and comparative analyses of the closely related species Caenorhabditis briggsae have been integrated into WormBase, including gene predictions, ortholog assignments and a new synteny viewer to display the relationships between the two species. Extensive site-wide refinement of the user interface now provides quick access to the most frequently accessed resources and a consistent browsing experience across the site. Unified single-page views now provide complete summaries of commonly accessed entries like genes. These advances continue to increase the utility of WormBase for C.elegans researchers, as well as for those researchers exploring problems in functional and comparative genomics in the context of a powerful genetic system
Recommended from our members
The effect of climate variation on agro-pastoral production in Africa
Using national crop and livestock production records from 1961ā2003 and satellite-derived data on pasture greenness from 1982ā2003 we show that the productivity of crops, livestock, and pastures in Africa is predictably associated with the El NiƱo Southern Oscillation and the North Atlantic Oscillation. The causal relations of these results are partly understandable through the associations between the atmospheric fluctuations and African rainfall. The range of the explained among-year variation in crop production in Africa as a whole corresponds to the nutritional requirements for ā20 million people. Results suggest reduced African food production if the global climate changes toward more El NiƱo-like conditions, as most climate models predict. Maize production in southern Africa is most strongly affected by El NiƱo events. Management measures include annual changes in crop selection and storage strategies in response to El NiƱo Southern Oscillation-based and North Atlantic Oscillation-based predictions for the next growing season.Keywords: nonlinear statistical modelling, food production, North Atlantic Oscillation, Normalized Difference Vegetation Index, El Nino Southern Oscillatio
WormBase: a comprehensive data resource for Caenorhabditis biology and genomics
WormBase (http://www.wormbase.org), the model organism database for information about Caenorhabditis elegans and related nematodes, continues to expand in breadth and depth. Over the past year, WormBase has added multiple large-scale datasets including SAGE, interactome, 3D protein structure datasets and NCBI KOGs. To accommodate this growth, the International WormBase Consortium has improved the user interface by adding new features to aid in navigation, visualization of large-scale datasets, advanced searching and data mining. Internally, we have restructured the database models to rationalize the representation of genes and to prepare the system to accept the genome sequences of three additional Caenorhabditis species over the coming year
- ā¦