منابع مشابه
In search of a perfect partnership.
There's no question that our partnership is a natural, given the technological emphasis in modern medicine. My comments are not intended as criticism, but offered in the spirit of broadening our mutual understanding. I believe that open communication will enhance our continued collaboration in this interdisciplinary effort and yield significant advances in medical science.
متن کاملRhetoric and marketing device or potential and perfect partnership? - a case study of Kenyan ecotourism
ii Abbreviations and Acronyms vii
متن کاملPerfect time or perfect crime?
Imagine the situation: “One day, you notice an old country woman crossing a downtown street, just about to put one foot down on the rails of the streetcar line. [...] Suppose, now, that at the very moment she puts her foot on the rail a streetcar comes rushing down the tracks toward her. If the old woman does not notice the car and continues across the tracks nothing will happen. But if someone...
متن کاملPerfect Matchings and Perfect Powers
In the last decade there have been many results about special families of graphs whose number of perfect matchings is given by perfect or near perfect powers (N. Elkies et al., J. Algebraic Combin. 1 (1992), 111– 132; B.-Y. Yang, Ph.D. thesis, Department of Mathematics, MIT, Cambridge, MA, 1991; J. Propp, New Perspectives in Geometric Combinatorics, Cambridge University Press, 1999). In this pa...
متن کاملPerfect Matchings and Perfect Squares
In 1961, P.W. Kasteleyn enumerated the domino tilings of a 2n × 2n chessboard. His answer was always a square or double a square (we call such a number "squarish"), but he did not provide a combinatorial explanation for this. In the present thesis, we prove by mostly combinatorial arguments that the number of matchings of a large class of graphs with 4-fold rotational symmetry is squarish; our ...
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ژورنال
عنوان ژورنال: Nature Reviews Immunology
سال: 2006
ISSN: 1474-1733,1474-1741
DOI: 10.1038/nri1929