Earthquake Resilience of Reinforced Concrete Structural Walls with Replaceable “Fuses”

The concept of providing a fuse in a structural system has been both developed and investigated over the past few years (e.g., the use of replaceable links in eccentrically braced frames or the use of replaceable links in the new San Francisco-Oakland Bay Bridge). This paper presents a new coupling beam with a creative fuse installed in the mid-span of a steel-concrete composite beam via an end plate and high-strength bolts. First, a practical design methodology of a replaceable coupling beam is presented. Next, the seismic behavior of the proposed fuse is tested and evaluated, and two structural wall specimens with or without a fuse are designed and fabricated according to the proposed design methods. The two specimens possess similar shear capacities under large-scale cyclic loading, and the walls of the two specimens show similar failure modes; however, the new walls exhibit slightly lower levels of damage than the conventional walls. In particular, the inelastic deformation and damage of replaceable coupling beams are mainly concentrated in the fuse, whereas the non-yield segment and the beam-wall pier interfaces remain nearly intact and produce only slight damage, which is beneficial regarding the replacement of the fuse in post-earthquake events.     

Preliminary archaeoentomological analyses of permafrost-preserved cultural layers from the pre-contact Yup'ik Eskimo site of Nunalleq,Alaska: Implications,potential and methodological considerations

At Nunalleq, a pre-contact Yup'ik Eskimo village site in Alaska (14th–17th century AD), abundant insect remains from highly organic substrates preserved within permafrost offer a unique opportunity to investigate past ecological and living conditions. This paper presents the preliminary results obtained from the analysis of two samples collected from floor layers in sod houses. The numerous and diverse insect remains highlight the exciting potential of archaeoentomology for reconstructing past ecological conditions, resource exploitation and the use of space at northern hunter–gatherer sites and have permitted the development of a strategy for the future collection of archaeoentomological data at permafrost-preserved sites in Alaska and elsewhere.     

南诏大理国金属佛像制作工艺初探

为研究南诏大理国金属佛像的制作工艺,对部分金属佛像进行了科学分析,表明制作各种铜佛像时,主要使用失蜡铸造工艺,已使用多种金属元素作为材质,阿嵯耶观音像和其他铜像是以含砷的铜合金为特征,金质佛像的材质主要用金银合金,铸造小铜佛像则采用复杂的合金成分配比。根据铭文和绘画资料分析,这些金属佛像主要是大理本地的工匠制作。     

浅谈田野考古动物遗存采集

田野考古动物遗存采集是动物考古学研究的关键环节之一,受人为控制,本文着重讨论了采集过程、采集方法和注意事项,旨在推进采集的规范化、科学性和完整度,为深入开展动物考古学研究提供良好的原始资料.     

四川地区潮湿气候环境下的馆藏陶瓷器文物的保护与修复

馆藏陶、瓷器文物的保护与修复,是文物保护与修复工作之一。由于各种原因,长期以来,全国从事陶、瓷器文物保护与修复的专业技术人员并不多,四川省博物馆在馆藏陶、瓷器文物的保护与修复工作中积累了一定的经验,因地制宜,探索出一套适合在四川地区潮湿气候环境下进行馆藏陶、瓷器文物的保护与修复的经验,以及如何正确选用保护材料和具体实施的方法与步骤。     

Some Ideas and Reflections on Teaching 'Ideas' in Geography

This paper outlines the characteristics of a seminar on realism which forms part of the teaching of 'ideas and methods in geography' in the department concerned. The seminar requires each of about a dozen students to answer a specific question by reading a single paper, writing a summary answer to the question based on this source, and delivering an oral presentation. The questions are structured to deal with abstract theoretical issues at first, and then to consider the implications of these issues for research practice. The experience of the seminar is intended to help students prepare for an open-book examination, and to develop the research planning for their dissertations. Student feedback is reviewed, and ideas for modification of the seminar structure are discussed.     

Champaner‐Pavagadh Archaeological Park: A Design Approach

Champaner‐Pavagadh, like many other heritage sites in India, is both an historic and ethnographic landscape. It possesses a unique status as a medieval city—Champaner—frozen in time, more or less protected by its sudden abandonment 450 years ago. At the same time, it is a living sacred site—Pavagadh Hill—visited annually by millions, with a resident population. Efforts are underway to declare the hill and the remains of the medieval city at its foot an archaeological park, which will ensure protection and conservation of cultural and natural resources. The challenge in designing the site as an archaeological park lies in articulating the pastoral image conjured up by the term in a manner that does not belie complex issues of land ownership, varied use, and ecological integrity of the site. Working landscapes—farms, flower fields, orchards, and nurseries—can be employed as a landscape‐design typology to ensure sustainability and to preserve and frame sightlines to monuments. Garden archaeology is necessary to uncover the symbiotic relationship between buildings and gardens of medieval Champaner.     

Place-based corporate hegemony: General Electric in Tell City, Indiana, 1943–1947

This paper examines the dynamics behind the selling of a federally owned World War II factory in Tell City, Indiana in 1946 and 1947. The federal agency charged with disposing of wartime plant, the War Assets Administration, reversed its decision to sell the factory to a small innovative company, Electra-Voice, selling it instead to the giant electrical equipment manufacturer, General Electric. What would make federal administrators who were part of a powerful liberal state apparatus committed to economic competition and anti-monopoly change their mind? The answer lies in what I call place-based corporate hegemony. Probing the material consequences of everyday action, place-based corporate hegemony revolves around the formation of alliances based on axiomatic values, the continued appeal of these values, the redistribution of symbolic and material resources, and the incorporation of threatening elements. Deploying a range of archival materials I show how the concerted efforts of the community, business organizations, politicians and unions as well as General Electric to question the initial decision forced the state to rethink and change its decision.     

Constructing Gendered Workplace ‘Types’: The weaver–millworker distinction in Dundee's jute industry,c. 1880–1910

Victorian and Edwardian Dundee was labelled a ‘woman's town’ due to the high proportion of women who worked in the city's staple jute industry. In this article, drawing on a range of contemporary sources, I use the work of feminist historians and Foucauldian notions of discourse to interrogate this label and explore why and how working women came to be marked as particularly problematic. Further, in questioning this label, I demonstrate how two specific workplace ‘types’—the weaver and millworker—were identified and constructed in contrast to one another. This article probes the processes through which these two ‘types’ were created, contested and performed in relation to the segregations and working conditions of their respective workplaces, and argues for a markedly spatial interrogation of gender identities and the category ‘working woman’.     

Pacific cod (Gadus macrocephalus) as a paleothermometer: otolith oxygen isotope reconstruction

Stable isotope studies are increasingly important for understanding past environmental and cultural developments along the North Pacific Rim. In this paper, we present methods for using Pacific cod (Gadus macrocephalus) otoliths as a paleothermometer using a case study from Kodiak Island, Alaska. The results of this study indicate that Pacific cod otoliths record variable paleoenvironmental conditions during the Little Ice Age. The broad distribution of Pacific cod and success in using the otoliths as a paleothermometer makes this method widely applicable to researchers working throughout the northern Pacific Rim.