AMPLE 发表于 2025-3-23 11:25:25
Viraht Sahni complicated situations. Furthermore, precisely defined terms are usually associated with detailed quantitative descriptions, whereas we are concerned with a general understanding of the dynamics of ecology. For similar reasons I have tried to rely as little as possible on mathematical discussions.STALL 发表于 2025-3-23 14:11:14
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Viraht Sahni...The study of ‘ecological’ phenomena has never been confined solely to the work of researchers who consider themselves ecologists. It is rather a field of knowledge in which a plurality of practices, concepts and theories are developed. Thus, there exist numerous disciplinary subdivisions and reseAdenoma 发表于 2025-3-24 01:48:56
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,Schrödinger Theory from a “Newtonian” Perspective,rators. As the model system is in effect a representation of the interacting system, it is best to first describe Schrödinger theory from the same “Newtonian” perspective of “classical” fields and quantal sources . This perspective of Schrödinger theory is new. To quote from Einstein and I符合国情 发表于 2025-3-24 08:19:15
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,New Perspectives on Hohenberg–Kohn–Sham Density Functional Theory,m theory as derived originally, we refer the reader to the literature or to Chap. 4 of . . There are, in addition, numerous excellent texts on the subject with different emphases in which the precursory material is also described. There are also many books with reviews and articles oEndoscope 发表于 2025-3-24 16:02:54
Nonuniqueness of the Effective Potential Energy and Wave Function in Quantal Density Functional Theted to constructing . systems only in a . state. One can equally well construct . systems in an . state such that the ground state density .(.), energy E, and ionization potential I of the interacting system are reproduced . The state of the model . system is .. This means that there exist, in伤心 发表于 2025-3-24 22:09:35
, Approximations Within Quantal Density Functional Theory,ration in the wave function. Hence, Hartree theory is said to be an . approximation. The best orbitals for this product wave function in terms of the energy, are then obtained by application of the variational principle for the energy leading to the Hartree equations. The energy obtained is then里程碑 发表于 2025-3-25 00:45:16
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