现代性的诊断及治疗——塔尔科特·帕森斯思想述评

帕森斯的社会理论在社会学界拥有较高的地位，虽然他的理论过于宏观和抽象，但毕竟他是尝试将欧洲经典社会学理论糅合成一个前所未有的宏大框架的第一人。在研究现代性问题时，塔尔科特·帕森斯是一个无法跨越的人物。帕森斯的现代性理论可从现代性的可能、现代性问题的诊断以及治疗三个方面加以阐释。     

Demixing and nematic behaviour of oblate hard spherocylinders and hard spheres mixtures: Monte Carlo simulation and Parsons–Lee theory

Parsons–Lee approach is formulated for the isotropic–nematic transition in a binary mixture of oblate hard spherocylinders and hard spheres. Results for the phase coexistence and for the equation of state in both phases for fluids with different relative size and composition ranges are presented. The predicted behaviour is in agreement with Monte Carlo simulations in a qualitative fashion. The study serves to provide a rational view of how to control key aspects of the behaviour of these binary nematogenic colloidal systems. This behaviour can be tuned with an appropriate choice of the relative size and molar fractions of the depleting particles. In general, the mixture of discotic and spherical particles is stable against demixing up to very high packing fractions. We explore in detail the narrow geometrical range where demixing is predicted to be possible in the isotropic phase. The influence of molecular crowding effects on the stability of the mixture when spherical molecules are added to a system of discotic colloids is also studied.     

Parsons图Tb（2,q）的正则次数

已知Ｐａｒｓｏｎｓ图Ｔｂ（ｄ，ｑ）都是正则图，给出了Ｐａｒｓｏｎｓ图Ｔｂ（２，ｑ）正则次数的上、下界；对于ｂ∈Ｆｐ的情形，给出了图Ｔｂ（２，ｑ）正则次数的判定定理，确定了部分Ｐａｒｓｏｎｓ图的正则次数；并且纠正了文［１］中的一个错误．     

Parsons数的注记

对Ｐａｒｓｏｎｓ数ｍ（ｄ，ｑ）进行了一些讨论，并对ｍ（２，ｑ）作出了一个估计。