منابع مشابه
Cosmopolitan cities: the frontier in the twenty-first century?
People with independent (vs. interdependent) social orientation place greater priority on personal success, autonomy, and novel experiences over maintaining ties to their communities of origin. Accordingly, an independent orientation should be linked to a motivational proclivity to move to places that offer economic opportunities, freedom, and diversity. Such places are cities that can be calle...
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Excessive childhood mortality in sub-Saharan Africa is a tragic and familiar story. In the 1970s, 120% of children in Africa died before reaching 5 years of age, a rate higher than that in any other region in the world. When the human immunodeficiency virus (HIV) epidemic hit in the 1980s and 1990s, infant mortality rates increased further in some of the worst-affected areas as mother-to-child ...
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Best-first search is limited by the memory needed to store the Open and Closed lists, primarily to detect duplicate nodes. Magnetic disks provide vastly more storage, but random access of a disk is extremely slow. Instead of checking generated nodes immediately against existing nodes in a hash table, delayed duplicate detection (DDD) appends them to a file, then periodically removes the duplica...
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In portfolio theory, it is well-known that the distributions of stock returns often have non-Gaussian characteristics. Therefore, we need non-symmetric distributions for modeling and accurate analysis of actuarial data. For this purpose and optimal portfolio selection, we use the Tail Mean-Variance (TMV) model, which focuses on the rare risks but high losses and usually happens in the tail of r...
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ژورنال
عنوان ژورنال: Hispanic American Historical Review
سال: 1949
ISSN: 0018-2168,1527-1900
DOI: 10.1215/00182168-29.2.236