منابع مشابه
Response to Hamilton
Estrogenicity of Environmental PCBs The paper by Bergeron, Crews, and McLachlan, "PCBs as Environmental Estrogens: Turtle Sex Determination as a Biomarker of Environmental Contamination" (EHP 102:780-781) presents data on the estrogenic activity of 11 chlorinated biphenyls or diphenyl ethers, or hydroxylated derivatives thereof, selected so as to represent a variety of structural types. Some of...
متن کاملRejoinder to James Hamilton
Hamilton begins his criticism by stating that there is a philosophical distinction between the two methods for dating cycles and concludes that the method we use “leaves vague and intuitive exactly what this algorithm is intended to measure”. Nothing is further from the truth. Ask yourself, what is a recession? Common usage suggests that it is a decline in the level of economic activity that la...
متن کاملExtending Cycles Locally to Hamilton Cycles
A Hamilton circle in an infinite graph is a homeomorphic copy of the unit circle S1 that contains all vertices and all ends precisely once. We prove that every connected, locally connected, locally finite, claw-free graph has such a Hamilton circle, extending a result of Oberly and Sumner to infinite graphs. Furthermore, we show that such graphs are Hamilton-connected if and only if they are 3-...
متن کاملInclusive fitness theory from Darwin to Hamilton.
ONE of the central dogmas of modern behavioral ecology is that blood kinship plays a critical role in understanding the evolution of social behavior, particularly of costly social behavior such as altruism and cooperation. But it was not always so, and what I would like to do in this Perspectives is provide some historical context that led up to William Hamilton’s seminal work developing inclus...
متن کاملHamilton-Jacobi approach to Berezinian singular systems
In this work we present a formal generalization of the Hamilton-Jacobi formalism, recently developed for singular systems, to include the case of Lagrangians containing variables which are elements of Berezin algebra. We derive the HamiltonJacobi equation for such systems, analizing the singular case in order to obtain the equations of motion as total differential equations and study the integr...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1995
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.9510312b