منابع مشابه
Geographical networks of British hill forts using intervisibility graphs
We present a range of exploratory methods at the intersection of geographical analysis and graph/network theory to investigate placement of Bronze age and Iron age hill forts in a landscape, utilising varying degrees of domain knowledge (expert/archaeologist). Techniques that we employ include: intervisibility/line-of-sight; visible area of hillforts; landcover and geomorphometrics; and network...
متن کاملParental Education Choice: Some African American Dilemmas
The research literature on families and educational achievement as it addresses African American populations is uniquely characterized by attention to educational failure rather than educational success (Slaughter, Nakagawa, et al., 1990). This orientation originated over 40 years ago with the "culture-as-social-class" conceptual model, which attempts to explain the behavior of lower income Afr...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1898
ISSN: 0036-8733
DOI: 10.1038/scientificamerican06111898-377