转型时期中国社会公平感的变迁历程及其解释因素

基于2010—2018年中国综合社会调查的重复截面数据,本文对两大转型期中国社会公平感的变迁历程及其解释因素进行了探讨。在历史转型期,随着社会市场的建立和不断完善,社会公平感出现了迅速下降后又快速上升的趋势;在当前转型期,总社会流动率和向上流动比不断上升,社会公平感表现出波动上升的趋势。代际流动等社会结构因素是影响社会公平感变迁的基本要素,主观阶层流动感是社会公平感的直接来源,而文化规范是影响社会公平感的稳定潜在因素。本文从社会分层与流动的角度考察社会公平,发现社会公平与公平感具有统一性,但公平感所依据的道德观念已经随着特定历史时期的社会与心态转型发生了改变。

转型期社会心态研究述要

社会心态既是社会转型的反映,也是影响社会转型的力量。对转型期社会心态作科学、客观、准确的考察不仅是理论研究的必需,也是现实工作中发挥其社会预判、决策咨询功能的前提。根据对相关文献的内容分析,目前转型期社会心态研究可以分为三类:宏观考察、调查评估和现象剖析,本文对相关研究现状和特点进行梳理,在此基础上对转型期社会心态的深入研究提出思考。

Numerical and Experimental Research on the Influence of the Centrifugal Pumps Rotor Damage on Their Natural Frequency Response

The paper presents process of creating a centrifugal pump rotor model in CAD environment. Modeling of a virtual object was divided into two stages, modeling of the efficient pump and the simulated failure of one of the impeller＇s blades. Comparison of the results of the resonance frequency obtained from the model analysis, with those obtained from measurements on the actual object was shown. Measurements and simulations were conducted on the pump before and after the simulated damaged of the rotor. In order to verify the model the rotor of pump was weighted and compared with the masses of the respective components obtained from the virtual object. In the second stage genuine rotor was subjected to the experimental modal analysis.