排序方式: 共有53条查询结果,搜索用时 15 毫秒
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Mark Aschheim Shannon Flanagan John Harlander Chris Pitt Alba Alfaro Carlos Rivas 《Journal of Earthquake Engineering》2013,17(6):829-846
The seismic vulnerability of housing stock in El Salvador was demonstrated during the recent 2001 earthquakes. Relative to other types of common residential construction, confined masonry dwellings performed well. A coordinated pilot study was conducted with the objective of improving the seismic resistance of this form of construction while reducing associated costs and greenhouse gas emissions. Laboratory tests examined brick strength in relation to firing temperature and duration. Analytical studies examined the potential for voided bricks to improve seismic performance, the reduction in demands associated with stiffening the roof diaphragm, and demands imposed on the roof bracing system. This pilot study identifies the potential for voided bricks to reduce construction costs and greenhouse gas emissions with negligible effects on performance. The addition of end-bay diagonal bracing at the roof level resulted in significant performance enhancements. 相似文献
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The Necessity of Dialectical Naturalism: Marcuse,Bookchin, and Dialectics in the Midst of Ecological Crises
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In the wake of ecological crises, there has been a resurgence of interest in the relation between dialectical thought and nature. The work of Herbert Marcuse and Murray Bookchin offers unique approaches to this question that remain highly relevant. In the first half of the article, we engage with Marcuse's application of the dialectical method in which he gestured to the “vital need” to push beyond the appearance of “the real” and yet lamented the loss of the ability for negative thinking to pierce the dominance of the “technical apparatus” that tied humanity to this “radical falsity”. Here, we suggest the need for a more holistic dialectical understanding of the social totality—one that is directly located within, and takes as foundational, the environmental conditions of human society. In the second half, we examine Murray Bookchin's conception of “dialectical naturalism” as a more thorough engagement with the human/nature relation that surpasses Marcuse's late engagements with ecologism. In particular, we offer critical reflections on the concept of “nature” in the contemporary ecology movement and illustrate how dialectical naturalism is capable of not only transcending dualistic conceptions of “man/nature” but in expanding our awareness of the potentialities of history along what Bookchin terms the “libertory pathways” to a restorative relation between human “second nature” and biological “first nature”. We posit that systemic, interconnected and accelerating ecological crises (climatic, biospheric and oceanic) form the objective and absolute contradiction of contemporary global social life that compels an awareness of the potentialities of an ecological society. Only through this awareness can we break through the reified “solutions” that have often plagued the ecology movement, bringing about the urgent social and ecological transformation that our species requires for its liberation and long‐term survival. 相似文献
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Harold L. Dibble Simon J. Holdaway Sam C. Lin David R. Braun Matthew J. Douglass Radu Iovita Shannon P. McPherron Deborah I. Olszewski Dennis Sandgathe 《Journal of Archaeological Method and Theory》2017,24(3):813-851
While lithic objects can potentially inform us about past adaptations and behaviors, it is important to develop a comprehensive understanding of all of the various processes that influence what we recover from the archaeological record. We argue here that many assumptions used by archaeologists to derive behavioral inferences through the definition, conceptualization, and interpretation of both individual stone artifact forms and groups of artifacts identified as assemblages do not fit squarely with what we have learned from both ethnographic sources and analyses of archaeological materials. We discuss this in terms of two fallacies. The first is the fallacy of the “desired end product” in stone artifact manufacture, which also includes our ability to recognize such end products. The second fallacy has to do with the notions that lithic assemblages represent simple accumulations of contemporary behaviors and the degree to which the composition of the depositional units we study reliably match the kinds of activities that took place. Although it is beyond the scope of this paper to offer a comprehensive set of new methodologies and theoretical perspectives to solve these problems, our goal here is to stress the importance of rethinking some of our most basic assumptions regarding the nature of lithic objects and how they become part of the archaeological record. Such a revision is needed if we want to be able to develop research questions that can be addressed with the data we have available to us. 相似文献
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Shannon Black Chloe Fox Miller Deborah Leslie 《Gender, place and culture : a journal of feminist geography》2019,26(2):272-292
Over the last several decades, there has been a growing recognition of the precarious nature of employment in creative economies, including craft industries. Despite this work, little research has explored how the rise of the platform economy is affecting labour market precarity. Our article explores the nature of precarity in craft blogging, looking in particular at the domestic arts and crafts. We examine how a growing number of women have left other forms of employment to engage in sewing, knitting, quilting, cooking and baking. Many women have also taken to blogging about their endeavors. However, there is a paucity of research on the variety of types of work that craft bloggers engage in and the challenges they face. Drawing upon interviews with female domestic arts bloggers in Canada and the United States, the article explores the work that craft bloggers engage in, the space and time of labour, and the variable sources of income that they access through their work. The article analyzes the experiences of precarious labour that arise at the interface of craft and the internet, and the multiple identities that stem from hybrid forms of creative work. 相似文献
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King S 《Journal of urban history》2011,37(5):757-774
Throughout the first three decades of the twentieth century, black people in New York City encountered white violence, especially police brutality in Manhattan. The black community used various strategies to curtail white mob violence and police brutality, one of which was self-defense. This article examines blacks’ response to violence, specifically the debate concerning police brutality and self-defense in Harlem during the 1920s. While historians have examined race riots, blacks’ everyday encounters with police violence in the North have received inadequate treatment. By approaching everyday violence and black responses—self-defense, legal redress, and journalists’ remonstrations—as a process of political development, this article argues that the systematic violence perpetrated by the police both mobilized and politicized blacks individually and collectively to defend their community, but also contributed to a community consciousness that established police brutality as a legitimate issue for black protest. 相似文献
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Shannon R. Pynn Kacey C. Neely Meghan S. Ingstrup John C. Spence Valerie Carson Zac Robinson 《Children's Geographies》2019,17(3):266-277
ABSTRACT This study addressed the question: How and why has the good parenting ideal changed in relation to active free play (AFP) during middle childhood? Twenty-eight middle class and predominantly white adults (14 grandparent-parent dyads) completed individual semi-structured interviews. Data were subjected to a thematic analysis. Two themes (changing expectations for parental involvement in children's lives and increasing expectations to involve children in structured activities) depicted how the good parenting ideal has changed. A further two themes (news media influence on perceptions of safety and concerns about being judged on social media) explained some of the reasons why the good parenting ideal has changed. Perceived needs for parental involvement, supervision, and organized activities appear to contradict the notion of active free play. It may be useful to develop initiatives that are consistent with the good parenting ideal, and to examine parents’ use of traditional and social media in future AFP research. 相似文献