Zobrazeno 1 - 10
of 95
pro vyhledávání: '"F.W. Cummings"'
Autor:
Lu K, F.W. Cummings
A number of universals can be observed in the developing embryos of all phyla. An attempt is made here to describe some of these with a simple model, one consisting of two mutually repelling regions of gene patterning produced by signaling pathways,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33def9fe8eb85225baf5bf147be1580f
Autor:
F.W. Cummings
Publikováno v:
The International Journal of Developmental Biology. 50:193-208
The 'Cambrian explosion', about 540 million years ago, may have occurred within 10 to 50 million years. Almost all of the modern phyla, a very restricted group and many groups that may represent extinct phyla, suddenly appear near that time in the fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::336458d921cef8c8902c5f6382de2a14
https://doi.org/10.1387/ijdb.052058fc
https://doi.org/10.1387/ijdb.052058fc
Autor:
F.W. Cummings
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 355:427-438
Morphogen patterns are viewed as being affected by epithelial sheet geometry in early development. As the total area of the (closed) sheet changes, the changing geometry acts back in turn to change the morphogen pattern. A number of constraints are g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c9028fa7df01694ca64c07796c71e55
https://doi.org/10.1016/j.physa.2005.03.014
https://doi.org/10.1016/j.physa.2005.03.014
Autor:
F.W. Cummings
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 339:531-547
A new suggestion for pattern formation in biological systems is proposed. The interaction of two signaling pathways provides complex patterning. The interaction of two pathways involves few of the biochemical complexities of the pathways. The 'Wnt' p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e4eed62c5d7c6c0236c90aa5203f7a9
https://doi.org/10.1016/j.physa.2004.04.047
https://doi.org/10.1016/j.physa.2004.04.047
Publikováno v:
Scopus-Elsevier
The regions of independent quantum states, maximally classically correlated states, and purely quantum entangled (supercorrelated) states described in a recent formulation of quantum information theory by Cerf and Adami are explored here numerically
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::40f3589335b02750d43227f3da2d16f6
https://doi.org/10.1016/s0375-9601(99)00404-1
https://doi.org/10.1016/s0375-9601(99)00404-1
Autor:
F.W. Cummings
Publikováno v:
Journal of Theoretical Biology. 196:27-31
The model addresses the question of the origin of traveling waves, mimicking waves of the Hh and Dpp proteins such as found in development of the fly eye. These two proteins, which are part of an important signaling pathway to the genome, are found i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cf58c6f30fdd03f5158592a54ff44be
https://doi.org/10.1006/jtbi.1998.0815
https://doi.org/10.1006/jtbi.1998.0815
Autor:
F.W. Cummings, J.C. Strickland
Publikováno v:
Journal of Theoretical Biology. 192:531-544
Phyllotaxis is the study of the symmetrical arrangements of plant organs, and most often associated with the Fibonacci series of numbers. The present work points out that the well known Helmholtz equation of mathematical physics correlates all of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77a5ae1751bb98ba78d3031a24a7633c
https://doi.org/10.1006/jtbi.1998.0682
https://doi.org/10.1006/jtbi.1998.0682
Autor:
F.W. Cummings
Publikováno v:
The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meeting.
A thesis student at Stanford in the late 1950s reminisces about working under the guidance of Professor Edwin T. Jaynes. Some of the theoretical puzzles at that time are remembered. These involved topics such as comparison of the semi-classical theor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d8be7b9342aecf27fbea6d9136c2c6f
https://doi.org/10.1364/cqo.2013.m1.2
https://doi.org/10.1364/cqo.2013.m1.2
Autor:
F.W. Cummings
Publikováno v:
Journal of Theoretical Biology. 179:41-49
Geometrical aspects relevant to discussion of deformable epithelial cell sheets are presented. The epithelium is pictured as consisting of cells joined at their lateral surfaces and having cell heights which vary with position over the middle surface
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9651fb07ff5f6f3a1521113c25a85018
https://doi.org/10.1006/jtbi.1996.0046
https://doi.org/10.1006/jtbi.1996.0046
Autor:
F.W. Cummings
Publikováno v:
Journal of Theoretical Biology. 178:229-238
A model is given for the generation of pattern and form in living systems, based on the assumption of two types of a single adhesion molecule that form homotypic cell-cell contacts. The time dependence of the model is different from that of the Turin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::feea2321309f45e74e8b620fe3689fdc
https://doi.org/10.1006/jtbi.1996.0022
https://doi.org/10.1006/jtbi.1996.0022