منابع مشابه
Graph-Based Shape Similarity of Petroglyphs
Petroglyphs can be found on rock panels all over the world. The possibilities of digital photography and more recently various 3D scanning methods opened a new stage for the documentation and analysis of petroglyphs. The existing work on petroglyph shape similarity has largely avoided the questions of articulation, merged petroglyphs and potentially missing parts of petroglyphs. We aim at contr...
متن کاملCation-ratio Dating of Petroglyphs Using Pixe
A central problem in archaeological research has been the chronometric dating of petroglyphs (rock engravings). Recent improvements in the understanding of the chemistry of rock varnish (or patina) that develops on rock surfaces in arid regions has resulted in the development of a calibrated dating technique, cation-ratio (CR) dating. This is based on calibrating chemical changes in minor and m...
متن کامل3 . 11 Summary of Current Status of Oregon ’ s Biodiversity
Introduction Biodiversity, short for biological diversity, is the variety and variability of living organisms and the ecological complexes in which they live (Primack, 1993). One of the more widely accepted definitions (Noss and Cooperrider, 1994) extends the concept of biodiversity to include “the ecological and evolutionary processes that keep [these systems] functioning, yet ever changing an...
متن کاملDating Petroglyphs from Fugoppe Cave, Japan
For over 20 years, I have tried to establish a relative date for petroglyphs in Fugoppe Cave, Japan. Unsuspected amidst debris accumulating from about 1300 years ago, the petroglyphs were rediscovered accidentally in 1950. From an analysis of petroglyphs on fallen rocks scattered randomly on the site floor, I argue that the artworks date from ca.1900 years ago. The cave itself, formed by wave a...
متن کاملThe Oregon Report Computing in the 1980's
In January 1976 we first discussed the need for a meeting that would stimulate innovative and creative approaches to existing and future problems in computing. The general requirements of such a workshop (or what we call a "report") were to bring together leading experts in several overlapping disciplines of computing in a meeting format conducive to producing in-depth analysis of problems bein...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Anthropologist
سال: 1938
ISSN: 0002-7294,1548-1433
DOI: 10.1525/aa.1938.40.4.02a00130