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Our preliminary test calculations show the ability of a very simple effective Hamiltonian to produce ab-initio quality results for calculations on polyethylene T. Similar simple models could be determined for other polymers. The most important point is that the general methodology presented in this paper is able to provide many possibilities for constructing other one and two-electron effective Hamiltonians...
Olive baboons (Papio anubis) are typically described as highly specialized for quadrupedal locomotion. Yet, they regularly and spontaneously walk bipedally as well. In what manner do they do this, when compared to other primates and humans? This question is of interest with regard to the origin of bipedalism in hominids. As a first step in understanding bipedal locomotion in baboons, we here present...
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