نتایج جستجو برای: frontiers
تعداد نتایج: 8005 فیلتر نتایج به سال:
Stimulants have, in their own ways, played a leading role shaping today’s globalised world. Their world-shaping power stems from double role: as “agents” that stimulate bodies, and things “rouse incite” capital. In this issue of Commodity Frontiers, contributions center on the histories presents some stimulant crops sites processes cultivation, expansion, transformations. Contributors variously...
This article is citable (as shown above) and is released from embargo once it is posted to the Frontiers e-View site (www.frontiersinecology.org). Please note: This article was downloaded from Frontiers e-View, a service that publishes fully edited and formatted manuscripts before they appear in print in Frontiers in Ecology and the Environment. Readers are strongly advised to check the final p...
This research suggests a framework to identify promising research frontiers through patent map. Core patents are extracted from a list of patents, using collected patent information. The research frontiers are identified by conducting clustering core patents. Patent map is generated through principle component analysis and network analysis. The promising research frontiers and promising researc...
This article is citable (as shown above) and is released from embargo once it is posted to the Frontiers e-View site (www.frontiersinecology.org). Please note: This article was downloaded from Frontiers e-View, a service that publishes fully edited and formatted manuscripts before they appear in print in Frontiers in Ecology and the Environment. Readers are strongly advised to check the final p...
This article is citable (as shown above) and is released from embargo once it is posted to the Frontiers e-View site (www.frontiersinecology.org). Please note: This article was downloaded from Frontiers e-View, a service that publishes fully edited and formatted manuscripts before they appear in print in Frontiers in Ecology and the Environment. Readers are strongly advised to check the final p...
in this paper, it is assumed that the “decision making units“( ) are consist of positive and negative input and output. firstly, the optimistic and pessimistic models have been suggested by using negative data and then units with most productive scale size are measured in optimistic and pessimistic models. these productive values are compared with double frontiers and hurwicz’s criterion to obt...
We introduce a new approach for exploration based on the concept of frontiers, regions on the boundaly between open space and unexplored space. By moving to new frontiers, a mobile robot can extend its map into new territory until the entire environment has been explored. We describe a method for detecting frontiers in evidence grids and navigating to these frontiers. We also introduce a techni...
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