407 research outputs found
Revolution-A Spiritual Phenomenon: A Study in the History of Ideas
The irrational and utopian note of the revolution remained constant through its long and eventful history. I will try to show that the idea of modern revolution is not simply an attack on an established authority, but a phenomenon sui generis, i.e., an attack on order as such, based on an identifiable metaphysical position. The present article may be regarded as an attempt to contribute through an uncovering of the spiritual roots of the revolution, to an understanding upon which depends the survival of personal values in the social order, at a time when that order seems threatened from without and, even more, from within
Modelling and simulation of a stationary high-rise elevator system to predict the dynamic interactions between its components
In a high-rise elevator system lateral vibrations of the suspension and compensating ropes, coupled with vertical motions of the car and counterweight are induced by the building structure motions. When the frequency of the building coincides with the fundamental natural frequency of the ropes, large resonance whirling motions of the ropes result. This phenomenon leads to impacts of the ropes on the elevator walls, large displacements of the car and counterweight making the building and elevator system unsafe. This paper presents a comprehensive mathematical model of a high-rise elevator system taking into account the combined lateral stiffness of the roller guides and guide rails. The results and analysis presented in the paper demonstrate frequency curve veering phenomena and a wide range of resonances that occur in the system. A case study is presented when the car is parked at a landing level where the fundamental natural frequencies of the car, suspension and compensating rope system coincide with one of the natural frequencies of the high-rise building. The results show a range of nonlinear dynamic interactions between the components of the elevator system that play a significant role in the operation of the entire installation
Neoliberal indigenous policy: settler colonialism and the 'post-welfare' state
This book examines recent changes to Indigenous policy in English-speaking settler states, and locates them within the broader shift from social to neo-liberal framings of citizen-state relations via a case study of Australian federal policy between 2000 and 2007
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