A High-Performance Quadrilateral Flat Shell Element for Seismic Collapse Simulation of Tall Buildings and Its Implementation in OpenSees

Shear walls are important lateral force-resistant components of tall buildings. Hence, a reliable numerical model that can accurately represent the mechanical characteristics and large deformations of shear walls is critical for realistic collapse simulation of tall buildings. Based on the theory of generalized conforming element, a high-performance quadrilateral flat shell element, NLDKGQ, accounting for the large deformation using the updated Lagrangian formulation, is proposed herein and implemented in OpenSees. The reliability of NLDKGQ is validated using classical benchmark problems and reinforced concrete specimens. In addition, its capability in simulating the collapse of a tall building is also demonstrated.     

The Numerical Study of Base-Isolated Buildings Under Near-Field and Far-Field Earthquakes

The behavior of base-isolated building frame is investigated with the help of a numerical study for far-field and near-field earthquakes with directivity and fling-step effects. Both design-level and extreme-level earthquakes are considered. Selected response parameters are peak floor displacement, acceleration, base shear, and isolator displacement. Inelastic behavior of base-isolated structure during the earthquake is investigated performing nonlinear time history analysis of a ten-story building frame. This study shows that base isolation is not effective for near-field earthquakes. Even for design-level earthquake, the frame gets significantly into inelastic range for earthquakes with fling-step effect.     

Policy Networks in Complex Governance Subsystems: Observing and Comparing Hyperlink,Media, and Partnership Networks

Methods for observing policy networks have not kept up with the development of new network analytic techniques required to understand governance in complex settings. We compare three unobtrusive methods for observing policy networks based on hyperlinks between policy actor web sites, on media reports, and on public policy partnerships. Observations of one complex local water policy arena with all three methods provide a comparison of the general as well as actor‐specific network characteristics in the three observed networks. The core network of actors observed by all methods has similar network level statistics, highly correlated relationships measured by Quadratic Assignment Procedures models, and the same significant network microstructures as measured by Exponential Random Graph Models. The full networks including actors observed by any method also exhibit similar actor‐level characteristics, although the correlations across networks are stronger for bridging capital measures than for bonding capital measures, and each method has different apparent biases. Once biases are accounted for, similarities suggest that these methods may provide useful proxies for each other and for other relationships that are more difficult or impossible to measure, particularly when combined to offset each method's biases. If so, they can extend the range of policy networks observable with limited resources across space and time.     

Multiculturalism and the immigrant “Irish woman” after the Celtic Tiger: marginalisation,gender-based violence and family dysfunction in Ebun Akpoveta’s Trapped: Prison Without Walls

This article breaks new ground in examining how “new Irish” immigrant women have responded to the collapse of Ireland’s Celtic Tiger economy and the different forms of gender discrimination and marginalisation they face both within their minority ethnic communities and the Irish host society. It approaches Ebun Akpoveta’s Trapped: Prison Without Walls (2013) as an exemplary work of fiction which exposes unresolved injustices and inequalities suffered by immigrant women. Akpoveta creates a narrative that complicates previous representations of cultural encounters between newcomers and long-established members of Ireland’s host society, not least because her Nigerian female protagonist arrives as a postgraduate student rather than an asylum seeker or refugee. She fictionalises female experiences of marginalisation, gender-based violence and family dysfunction within an all-Nigerian family that outwardly appears to be a model of integration and social inclusion in an open and welcoming Irish multicultural society.     

Immigration,the Celtic Tiger and the economic crisis

Abstract

This article addresses the puzzle of why Ireland has proved so open to immigration. It compares responses to immigrants in the Republic of Ireland during the Celtic Tiger era and during the post-2008 economic crisis and finds no evidence of a political backlash during the latter period even though opinion polls suggest that opposition to immigration had increased and other evidence suggested that there had been an increase in racist incidents within Irish society. Nor did the resumption of large-scale emigration trigger political hostility to immigrants. The outcome of the 2004 Referendum on Citizenship, which removed a constitutional right to Irish citizenship to the Irish-born children of immigrants, suggested that that nationalism still matters hugely and a latent tendency towards ethnic chauvinism amongst the host population. Yet, a decade after the 2004 Referendum it looked as if the old mono-ethnic sense conception of the Irish nation had been disrupted, at least a little bit.     

Contemporary Irish theatre,the new Playboy controversy,and the economic crisis

Abstract

This article examines the impact of the economic crisis on contemporary Irish theatre. More specifically, I contend that the legal controversy surrounding Bisi Adigun and Roddy Doyle’s second production of Playboy of the Western World: A New Version in 2008 provides a case study of how professional theatre productions that dramatised stories of immigrant empowerment during the Irish economic boom were profoundly inhibited by the bust that followed. Their collaborative version of the new Playboy was widely regarded as Ireland’s most successful intercultural play and a commercial success when it was first staged at the Abbey Theatre in 2007. The subsequent breakdown in their relationship and ensuing legal dispute is more symptomatic of Celtic Tiger Ireland in economic collapse, I suggest, than the content of the play itself, or most other productions mounted in the period. I argue that this dispute did not simply reflect but also reinforced the social effects of the economic crisis, through its prolonged litigation, enormous expense, and especially the missed opportunity that it represented to position the multicultural and migrant themed Playboy within the Irish theatrical mainstream. More broadly, I suggest that the economic crisis has been marked by the disappearance of immigrants from the professional Irish stage, a void which was only partially filled by community theatre productions. A case in point is Adigun and Arambe’s most recent adaptation of Jimmy Murphy’s The Kings of the Kilburn High Road in The Paddies of Parnell Street (2013), a play which I positively appraise as an example of successful “intercultural re-appropriation”.     

The neo-liberalization of strategic spatial planning and the overproduction of development in Celtic Tiger Ireland

This paper argues that the role of the planning system in the overproduction of development during Ireland’s Celtic Tiger needs to be analysed as instructive of contemporary neo-liberal transformations of strategic spatial planning. Leaning on a Foucauldian governmentality perspective, the genealogy of modern Irish planning practice is explored to elucidate how neo-liberal rationalities became embedded in institutional norms through consensus-driven partnership governance. The central premise is that the turn to ‘strategic spatial planning’, particularly with the publication of the National Spatial Strategy in 2002, was usefully exploited to mask the spatial politics of the ever-increasing need for the state to facilitate capital switching into built environment formation in order to maintain conditions of high economic growth. Using the empirical case study of housing development in the ‘Upper Shannon’ region and large-scale commercial development in County Meath, it is argued that this contributed to a destabilization of the planning system and an abandonment of basic planning principles. The paper concludes that, in the context of the new and deeply uneven economic geography of post-crisis Ireland, there is an urgent need for a repoliticized critique of normative interpretations of strategic spatial planning practice in order for more progressive practices to emerge.     

Reconnaissance Report on Geotechnical Engineering Aspect of the 2015 Gorkha,Nepal, Earthquake

An earthquake of moment magnitude M_w 7.8 struck Nepal at 06:11 UTC on April 25, 2015. Field reconnaissance focused on the geotechnical engineering aspect of the earthquake was carried out in the Kathmandu Valley and regions near the epicenter. This paper presents briefly the geology of Nepal, the accelerogram, and results of standard penetration tests at selected sites in the valley. The study shows the failure case histories including landslides, road embankment settlement, bridge foundations and abutment damage, and liquefaction. The paper also highlights the impact of local soil properties and basin and ridge effect on the severity of damage.     

戴维·J.希尔和他的《欧洲外交史》

活跃在19、20世纪之交的美国传奇式人物戴维·J.希尔集多种身份于一身,而他最为后人记取的是他在国际关系学科领域的开创性成就。他所著的《欧洲外交史》三卷,是欧美学界的第一部国际关系史通史著作,极大地推动了19、20世纪之交欧美国际关系学科的兴起。该著作既清晰描绘了1800多年间欧洲政治的宏观轨迹,又生动展示了欧洲国际关系进程的丰富画面。它具有以下几个突出的特点:对历史主线的精当把握、对历史偶然因素的深刻揭示、对文献资料的广泛挖掘以及清新活泼的写作手法。这些特点使该著作成为国际关系史学的不朽经典。     

河南史前城址的分类研究

河南地区史前城址脱胎于早期的环濠聚落。在史前人口不断滋生的情况下,由于婚姻和血缘纽带集中聚居,构成了规模更大的史前城址。史前晚期的社会分化导致城址的构成模式由"大同模式"向"小康模式"转变,进而形成了三代大型都邑聚落的"城郭体系"。