Articles Review: Political Christianity in Hungary, 1000-1914

The profound influence of Christianity on Hungarian politics can be traced back for more than a thousand years of its history to the creation of the Kingdom, and it could easily be found in modern days politics in the current Orbán administration of the Republic. However, after reviewing the development of Political Christianity, I have found that it has been most significant in four periods of Hungarian history: the creation of the Kingdom in 1000, two invasions of the Mongols and the Ottomans, the struggle between the Old and New Churches, and the transformation to Christian Nationalism. The three events have provided an argument that if Christianity is merely a powerful political instrument for the rulers, and I expect to alarm my fellow Christians to be cautious when they find a similar situation in todays

Auto-disturbance-rejection controller for SVC to enhance wind farm voltage stability

Author name used in this publication: C. Y. ChungRefereed conference paper2008-2009 > Academic research: refereed > Refereed conference paperVersion of RecordPublishe

A unified constitutive model for asymmetric tension and compression creep-ageing behaviour of naturally aged Al-Cu-Li alloy

A set of unified constitutive equations is presented that predict the asymmetric tension and compression creep behaviour and recently observed double primary creep of pre-stretched/naturally aged aluminium-cooper-lithium alloy AA2050-T34. The evolution of the primary micro- and macro-variables related to the precipitation hardening and creep deformation of the alloy during creep age forming (CAF) are analysed and modelled. Equations for the yield strength evolution of the alloy, including an initial reversion and subsequent strengthening, are proposed based on a theory of concurrent dissolution, re-nucleation and growth of precipitates during artificial ageing. We present new observations of so-called double primary creep during the CAF process. This phenomenon is then predicted by introducing effects of interacting microstructures, including evolving precipitates, diffusing solutes and dislocations, into the sinh-law creep model. In addition, concepts of threshold creep stress σth and a microstructure-dependant creep variable H, which behave differently under different external stress directions, are proposed and incorporated into the creep model. This enables prediction of the asymmetric tension and compression creep-ageing behaviour of the alloy. Quantitative transmission electron microscopy (TEM) and related small-angle X-ray scattering (SAXS) analysis have been carried out for selected creep-aged samples to assist the development and calibration of the constitutive model. A good agreement has been achieved between the experimental results and the model. The model has the potential to be applied to creep age forming of other heat-treatable aluminium alloys