1,069 research outputs found
Prioritization of areas in China for the conservation of endangered birds using modelled geographical distributions
We developed distributional models for 90 threatened bird species in China, and used
heuristic complementarity algorithms to prioritize areas for conservation. The pixel-based
area selection prioritized 20 areas for protection, which covered all species analysed. Area
selecting for endangered species based on the existing biosphere reserve system included
only 37–62 species in eleven reserves, leaving 28–53 species unprotected. We employed
algorithms for area selection based on species richness and rarity and obtained two views
of a most efficient reserve network. We used the distributional hypotheses to identify
additions to the reserve system that would improve its effectiveness substantially. The
pixel-based area selection approach includes species much more efficiently on a per-area
basis, and thus offers exciting perspectives for improved protection of the country’s
endangered avifauna
The Application and Research of navigation-aids inspection and maintenance based on video surveillance
AbstractTo realize automatic management of navigation-aids, this paper presented an idea of navigation-aids inspection using video surveillance technology. It was aimed at solving problems of navigation-aids inspection and maintenance mode. It analyzed the current status of navigation-aids inspection and maintenance in areas, and researched the development and application of video surveillance technology. The results indicated that navigation-aids inspection and maintenance with video surveillance can better improve work efficiency, save costs and protect the quality of navigation-aids service
Service Selection of Ensuring Transactional Reliability and QoS for Web Service Composition
Service-Oriented Architecture (SOA) provides a flexible framework of service composition. Using standard-based protocols, composite service can be constructed by integrating component services independently. As component services are developed by different organization and offer diverse transactional properties and QoS characteristics, it is a challenging problem how to select suitable component services which ensure reliable execution of composite Web service and construct the optimal composite Web service. In this paper, we propose a selection approach that combines transactional properties of ensuring reliability and QoS characteristics. In the selection approach, we build automaton model to implement transactional-aware service selection and use the model to guarantee reliable execution of composite Web service. We also define aggregation functions, and use a Multiple-Attribute Decision-Making approach for the utility function to achieve Qos-based optimal service selection. Finally, two scenarios of experiments are presented to demonstrate the validity of the selection approach
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