一类单调基因参数可调三角模

为了研究优化Zadeh算子,给出一类单调基因参数可调三角模的定义。先定义了一种由单调函数经初等运算生成的广义T三角模Fλ,再利用对偶性,定义广义S三角模Gλ,统一了部分作者提出的优化Zadeh算子;应用该定义生成一对新的三角模,验证该定义用于构造模糊算子的可行性,为三角模的构造提供了新方向;研究部分算子随参数λ调整的变化情况,以及和Zadeh算子的关系。Fλ和Gλ能够使模糊集的交并运算更加合理,提高了数据的利用率,避免信息丢失。在三角模Gλ的基础上给出了g-λ测度的定义及其定理,由此丰富了模糊测度的理论。

Indications of c-axis Charge Transport in Hole Doped Triangular Antiferromagnets

The c-axis charge transport of the hole doped triangular antiferromagnet is investigated within the t-J model by considering the incoherent interlayer hopping. It is shown that the c-axis charge transport of the hole doped triangular antiferromagnet is essentially determined by the scattering from the in-plane fluctuation. The c-axis conductivity spectrum shows a low-energy peak and the unusual high-energy broad band, while the c-axis resistivity is characterized by a crossover from the high temperature metallic-like behavior to the low temperature insulating-like behavior, which is qualitatively consistent with those of the hole doped square lattice antiferromagnet.