Fast Nonlinear Analysis of Traditional Chinese Timber-Frame Building with Dou-Gon

ABSTRACT

This article presents a study of the applicability of fast nonlinear analytical (FNA) models in predicting the global response of Chinese traditional timber-frame building with Dou-Gon under seismic excitation. Efforts are made to overcome challenges in establishing simplified calculation models, and the corresponding dynamic equations are derived considering the mechanical behavior of sliding column root, mortise-tenon joint and Dou-Gon (bracket sets). Furthermore, nonlinear time-history analysis is conducted under different seismic excitations. Through a verification study, a good correspondence is obtained with previous shake-table test results. Seismic response analysis is also conducted to investigate the energy dissipation of column root sliding, mortise-tenon joint, and Dou-Gon. Subsequently, peak responses of column root and roof under increased values of peak ground acceleration (PGA) are also analyzed. And then, seismic isolation ability and damping characteristics of the model are discussed.     

Cottages and the Country House: Power,Paternalism and Protest in Elsecar

In the period c.1790 to 1870, the small rural hamlet of Elsecar, near Barnsley, was transformed into an extensive industrial village, with a thriving economy based on iron and coal. Most of this development was instigated, controlled and financed by the local landowners, the 4th and 5th Earls Fitzwilliam. As well as being passionately interested in the practicalities and potential of industrial development, the Earls also looked to the welfare of their workers, providing a wealth of benefits including pensions, sick pay and purpose-built industrial housing. Using a historical approach based on a variety of source material, this paper explores the Earls’ provision of workers’ housing as a way in which to consider wider themes of power, control, inequality and resistance as they were expressed both in the physicality of the houses themselves, and in the cultural meanings which were attributed to them by contemporary observers. The paper argues that workers’ housing functioned as a visible embodiment of power relationships within Elsecar and, because of this, it continues to have a significant resonance in the modern world.     

基于氮气吸附法的古代丝织品纳米孔隙研究方法初探

孔隙不仅是纤维骨架的一部分，也是外界物质进出的重要通道。目前，关于古代丝织品纳米孔隙结构的相关研究极少，仅有孔径一项评价指标，较为单一。实验采用红外光谱法和电子顺磁共振波谱法研究古代丝织品的降解特征，在此基础上采用低温氮气吸附法表征蚕丝纤维内部固有的孔隙结构，首次从孔形、孔径分布、比表面积、孔体积、平均孔径、分形维数等多个角度对古代丝织品的微观孔隙结构进行综合研究。研究结果表明：与现代丝织品相比，清代黄山样品、北宋南陵样品及战国郴州样品的劣化程度依次加深。孔结构分析显示，所有样品中同时含有狭缝形孔和圆筒形孔，孔隙具有连续性，表明蚕丝内部存在复杂的多级结构。其中，劣化程度较高的北宋和战国样品内部存在更多的大孔或开放性孔隙。Barrett-Joyner-Halenda(BJH)法和非定域密度泛函(NLDFT)法的研究结果显示，样品孔隙以介孔为主，孔径主要分布在20 nm以下，最可几孔径基本稳定在2.8 nm左右，为蚕丝内部的有序孔。比表面积和孔体积的研究结果表明，劣化程度较轻的黄山样品具有较高的比表面积，其孔体积的增加主要来源于小孔，南陵样品和郴州样品孔体积的增加主要来源于大孔。分形维数的...     

Power and Scale: The Shifting Geography of Industrial Relations Law in Australia

Abstract: In an increasingly complex literature exploring the geographies of socially constructed scale, interest has focused on the relationship between scale, power and the contested political terrains through which these relations are played out. In this paper, I argue that these interactions must be understood in specific contexts, where shifts in scale are inextricably linked to shifts in the sources and instruments of power. By applying a scale perspective to the analysis of recent industrial relations legislation in Australia, I show that the nature and direction of rescaling is “fixed” by the powers of institutional actors and the scope of their jurisdictions. I then draw on the distinctively scaled relations of the Australian context to assess the extent to which Australia's national rescaling processes can be seen as representing a process of convergence toward universal “spaces of neoliberalism”.