Controlled Rocking CLT Walls for Buildings in Regions of Moderate Seismicity: Design Procedure and Numerical Collapse Assessment

Controlled rocking heavy timber walls are designed to rock on their foundations in response to earthquakes. For regions of moderate seismicity, it is proposed that this rocking behaviour can be adequately controlled using only post-tensioning, even with a large force-reduction factor and no supplemental energy dissipation. This article presents a force-based design procedure for controlled rocking cross-laminated timber walls without supplemental energy dissipation, including a method for estimating higher mode effects. Fragility analyses of three prototype walls demonstrate that the procedure can limit the probability of collapse to <10% during a maximum considered earthquake in a region of moderate seismicity.     

陕西唐宋石窟寺与汉地木构佛寺建筑群体对比研究

本文以陕西唐宋时期的石窟寺建筑为主要研究对象,从典型石窟寺建筑实例入手,与汉地木构佛寺建筑群体进行对比、分析,主要从以下几点进行研究：一、对比分析陕西唐宋石窟寺与汉地木构佛寺建筑的营建背景：二、进行陕西省内唐宋时期石窟寺与汉地木构佛寺在建筑群外环境的对比研究;三、进行陕西省内唐宋时期石窟寺与汉地木构佛寺在建筑群形态发展方面的对比研究。通过上述的研究方法,探讨出：陕西唐宋石窟寺在营建背景、建筑选址、建筑构成、建筑布局方面的发展规律及特点。     

A Spanish Man‐o‐War in New Zealand? The 1864 wreck of Grafton and its lessons for pre‐Cook shipwreck claims

This paper considers the 1864 wreck of Grafton in the Auckland Islands, and its implications for wreck analysis and pre‐Cook exploration claims. The captain of Grafton, Thomas Musgrave, stated that the schooner was built from the wreck of a Spanish man‐o‐war, and archaeological analysis of the wreck found that the timbers are a tropical South American species, and had possibly been reused. The implications of this are clear; it is possible that timbers that originated in pre‐Cook (1769) ships lie in New Zealand, but without a full understanding of the historical and archaeological context of any such timbers, including their reuse in later ships, it is not possible to claim proof of pre‐Cook European exploration of New Zealand.     

“偃师邢渠孝父画像石”研究

"偃师邢渠孝父画像石"是流失海外、现藏美国波士顿美术馆的一块东汉画像石。该石图文内容丰富、画像精美生动,从当朝民间孝行事迹的记述,到函谷关关楼建筑结构的绘制,皆是难得珍贵的史料。本文解读了画像石上五则孝行故事和关楼图像,对画像石镌刻年代、用途性质、装配位置、墓主身份、关楼及出行图与人物的关系、画像石的出土时间和地点作了初步探讨。     

Persistence of the cultural landscape in Campania (Southern Italy) before the AD 472 Vesuvius eruption: archaeoenvironmental data

Cultural landscapes were prominent during the Early Roman period when agronomic knowledge allowed the spread of intensive land exploitation in most of the available land. The aim of this contribution is to explore whether for the Campania region (Southern Italy) archaeoenvironmental data would support continuity or change in the cultural landscape of Roman tradition in the 4th and 5th centuries. To do so, new data from two sites located on the northern slopes of the Vesuvius, both buried by the AD 472 eruption have been investigated. Charcoal analysis, ¹⁴C dating, and chemical analysis of organic residues were carried out in order to study the landscape and the food production at these sites. The results suggest the persistence of the Roman cultural landscape until the 4th and 5th centuries in this area. The landscape is in fact strongly marked both in agriculture and woodland exploitation and management, being characterized by managed chestnut forests as well as valuable cultivations of walnut, large vineyards, olive groves, and probably orchards and crops. The integrated approach with archaeobotanical and archaeometric analyses proves to be a powerful method for the study of the past landscapes, providing a good insight into the environment. Furthermore, this study provided the most ancient evidence of chestnut silviculture for wood.     

海昏侯墓部分木质文物材种鉴定及用材分析

为了解海昏侯墓椁室木材及随葬漆木器木材种类,进而分析其用材特点,分别对木材取样进行种属鉴定。鉴定结果表明:海昏侯墓椁木为樟科(Lauraceae)桢楠属(Phoebe)桢楠(Phoebe zhennan),椁室木门为柏科(Cupressaceae)柏木属(Cupressus)柏木(Cupressus funebris),比较文献资料,推测汉代椁室常用木材即为楠,反映了汉代椁木用材的专门化;受检的随葬漆木器材种均为樟科,包含檫木属(Sassafras)檫木(Sassafras tzumu)、黄肉楠属(Actinodaphne)、琼楠属(Beilschmiedia)等,反映出随葬漆木器用材具有地域性,可能均为本地生产。     

Tory Travails and Collegiate Confusion: The Oxford University Election of 1722*

In terms of the unreformed franchise operative in the early 18th century, the University of Oxford made up an unusual parliamentary constituency. Here it was the votes of non-resident members that could be decisive to the outcome if the seat was contested. In late Stuart and early Hanoverian Oxford, Tories were almost certain to be returned but, in the general election of 1722, the Tory vote was split between rival candidates offering a possible opening for Oxford Whigs. This essay considers the varieties of electoral behaviour inside the university at this time of exceptional political flux nationally, how the candidates confronted the practical problem of getting ‘outvoters’ into Oxford, and the extent to which the heads of the colleges could rely on a sufficiently stable corporate identity to have their resident members vote in an approved way. The 1722 general election again raised questions as to who exactly was entitled to vote in a university constituancy, how much illegal voting was going on, and whether it was in a candidate's best interests either to connive or draw attention to it. The eventual choices made by the Oxford electorate would signal where the university stood in the wider political picture of the early 1720s, how far it – and the varieties of toryism it contained – was prepared to endorse the legitimacy of the new Hanoverian order.     

Vegetation history at the multi-period prehistoric complex at Ballynahatty,Co. Down,Northern Ireland

Palaeoecological methods can provide an environmental context for archaeological sites, enabling the nature of past human activity to be explored from an indirect but alternative perspective. Through a palynological study of a small fen peatland located within the catchment of a multi-period prehistoric complex at Ballynahatty, Co. Down, Northern Ireland, we reconstruct the vegetation history of the area during the early prehistoric period. The pollen record reveals tentative evidence for Mesolithic activity in the area at 6410–6220 cal BC, with woodland disturbance identified during the Mesolithic–Neolithic transitional period ca. 4430–3890 cal BC. A more significant impact on the landscape is observed in the Early Neolithic from 3950 to 3700 cal BC, with an opening up of the forest and the establishment of a mixed agricultural economy. This activity precedes and continues to be evident through the Mid-Neolithic during which megalithic tombs and related burial sites were constructed at Ballynahatty. Due to chronological uncertainties and a possible hiatus in peat accumulation in the fen, the contemporary environment of the Ballynahatty timber circle complex (constructed and used ca. 3080–2490 cal BC) and henge (dating to the third millennium cal BC) cannot certainly be established. Nevertheless, the pollen record suggests that the landscape remained open through to the Bronze Age, implying a long continuity of human activity in the area. These findings support the idea that the Ballynahatty prehistoric complex was the product of a gradual and repeated restructuring of the ritual and ceremonial landscape whose significance continued to be recognised throughout the early prehistoric period.     

河北省大办农村公共食堂的历史考察

1958年上半年至1961年6月,河北省农村公共食堂经历了一哄而起、难以为继、强行恢复、彻底终结的曲折发展历程,其命运与大跃进和人民公社化运动息息相关。伴随着大跃进和人民公社化运动的迅猛发展,农村公共食堂在河北省蓬勃兴起;随着大跃进的中止,河北省农村公共食堂也以失败告终。