منابع مشابه
Increasing Diamonds
A class of diamond-shaped combinatorial structures is studied whose enumerating generating functions satisfy differential equations of the form f2 “ Gpfq, for some function G. In addition to their own interests and being natural extensions of increasing trees, the study of such DAG-structures was motivated by modelling executions of seriesparallel concurrent processes; they may also be used in ...
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Fascinating colors of diamonds are generated by a combination of mechanisms including Fresnel reflection, volume absorption and light dispersion. This paper proposes an approach to unify these mechanisms to synthesize realistic computer images of diamonds. Our work is based on a composite spectral model that accounts separately for smooth components and spikes in spectra. While sufficiently han...
متن کاملConflict Diamonds 001
a working document by global witness. 10 may 2000 This working report has been produced by Global Witness. Partial funding for this report was kindly received from the UN department of the UK Foreign and Commenwealth Office (FCO), without which this report would not have been possible. The views expressed within are solely those of Global Witness. There are many individuals, companies and count...
متن کاملDiamonds on large cardinals
Acknowledgements I want to express my sincere gratitude to my supervisor Professor Jouko Väänänen for supporting me during all these years of getting acquainted with the intriguing field of set theory. I am also grateful to all other members of the Helsinki Logic Group for interesting discussions and guidance. Especially I wish to thank Do-cent Tapani Hyttinen who patiently has worked with all ...
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Diamond was discovered to be carbon in 1796, and it took more than 150 years from that time until a method of diamond synthesis was invented. The secret was pursued by many scientists but not unlocked until the 1950s, when diamond was synthesized almost simultaneously by Swedish and American researchers. Pressures of over 55,000 atmospheres and 1400C, plus molten iron to facilitate the change f...
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ژورنال
عنوان ژورنال: MRS Bulletin
سال: 1994
ISSN: 0883-7694,1938-1425
DOI: 10.1557/s0883769400047850