منابع مشابه
Identifying the Most Endangered Objects from Spatial Datasets
Real-life spatial objects are usually described by their geographic locations (e.g., longitude and latitude), and multiple quality attributes. Conventionally, spatial data are queried by two orthogonal aspects: spatial queries involve geographic locations only; skyline queries are used to retrieve those objects that are not dominated by others on all quality attributes. Specifically, an object ...
متن کاملInterspecific brood parasitism in galliform birds
Mode of development in birds helps determine the form of brood parasitism a species exhibits. Most knowledge of precocial brood parasites comes from a single avian family, the waterfowl (Anatidae: Anseriformes). Here we review cases of interspecific brood parasitism (IBP) in a second group of precocial birds, the order Galliformes. IBP is uncommon but taxonomically widespread, occurring in at l...
متن کاملEndangered languages, endangered knowledge
ogist, and ethnobiologist. She is cofounder and President of Terralingua: Partnerships for Linguistic and Biological Diversity. Terralingua is an international NGO based in Washington, DC, devoted to supporting the world’s linguistic diversity and to exploring the links between linguistic, cultural, and biological diversity, through research, information, education, and policy. She is editor of...
متن کاملChinas provincial disparities and the determinants of provincial inequality
The paper explains the growth inequality nexus for Chinas provinces. The theoretical model of provincial development consists of two regions and studies the interactions of a mutual depending development process. Due to positive externalities, incoming trade and FDI induce imitation and hence productivity growth. The regional government can inuence the economy by changing international trans...
متن کاملBaleen Whales: Conservation Issues and The Status Of The Most Endangered Populations
Most species of baleen whales were subject to intensive overexploitation by commercial whaling in this and previous centuries, and many populations were reduced to small fractions of their original sizes. Here, we review the status of baleen whale stocks, with an emphasis on those that are known or thought to be critically endangered. Current data suggest that, of the various threats potentiall...
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ژورنال
عنوان ژورنال: Oryx
سال: 1988
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605300022353