scholarly journals A review of the mechanical inerter: historical context, physical realisations and nonlinear applications

Author(s):  
David J. Wagg

AbstractIn this paper, a review of the nonlinear aspects of the mechanical inerter will be presented. The historical context goes back to the development of isolators and absorbers in the first half of the twentieth century. Both mechanical and fluid-based nonlinear inerter devices were developed in the mid- and late twentieth century. However, interest in the inerter really accelerated in the early 2000s following the work of Smith [87], who coined the term ‘inerter’ in the context of a force–current analogy between electrical and mechanical networks. Following the historical context, both fluid and mechanical inerter devices will be reviewed. Then, the application of nonlinear inerter-based isolators and absorbers is discussed. These include different types of nonlinear energy sinks, nonlinear inerter isolators and geometrically nonlinear inerter devices, many relying on concepts such as quasi-zero-stiffness springs. Finally, rocking structures with inerters attached are considered, before conclusions and some future directions for research are presented.

Author(s):  
Philip Mirowski ◽  
Edward Nik-Khah

Curiously, early neoclassical economics was a theory of agents, not markets as such. But changes in markets in the late twentieth century began to highlight this lacuna. How information was incorporated into the theory began to suggest that economists could not just describe The Market, but could also design boutique markets for clients. We trace the resulting narrative trajectory of this epoch-making departure using an abstract Information Space graphic showing combinations of types of agent epistemology, with different types of models of information.


Acta Poética ◽  
2021 ◽  
Vol 43 (1) ◽  
pp. 41-65
Author(s):  
Guadalupe Antonia Domínguez Márquez

This article analyses the work of the Austrian novelist Gustav Meyrink (1868-1932), who, between the years 1913 and 1927, published five fantastic novels in which several elements of late Twentieth Century Occultism prevail, in contrast to the historical context in which they were written, compelled by positivist scientism. From these esoteric and expressionist texts, we can build insight into a reading of modernity influenced by theosophy and eastern religions, as well as other spiritual currents, which show the multiple complexities of modernity.


Author(s):  
Catherine O. Jacquet

This chapter introduces the frameworks and visions of the two major social movements that took up antirape organizing in the mid-to-late twentieth century United States – the black freedom movement and the women’s liberation movement. The dominant discourses on rape emanating from these movements privileged either narrowly defined racial or gender oppression. Many activists challenged these frameworks and pushed for an intersectional approach to the larger antirape agenda. The chapter gives a brief history of antirape activism in the decades prior to situate the work of mid-twentieth-century activists into a larger historical context. A brief chapter outline for the book is also included.


2019 ◽  
Vol 25 (3) ◽  
pp. 324-344
Author(s):  
Jennifer Snow

The Christian Home remains an under-examined aspect of the world Christian historical context. By examining the work of three individuals in this arena, the paper traces the development of Christian Home missiology and its relationship to the development of global ecumenical structures in the mid- to late-twentieth century, focusing on a missional transition from evangelistic (holistic, contextualised, and relationship-driven) to expert (narrowly focused, universalised knowledge and skill-building) models of the Christian Home.


Author(s):  
Jennifer Schell

This chapter argues that Shelley and Hawthorne adapt traditional Gothic imagery to environmental contexts in order to create two distinctly different ecoGothic visions of the extinction of humanity. Drawing on ideas advanced by ecocritics, conservation biologists, and psychoanalytic thinkers, this chapter describes the historical context and emotional import of extinction science and its impact on Shelley and Hawthorne. Taking up The Last Man and “The Ambitious Guest,” respectively, the chapter contrasts Shelley’s view of nature as a indiscriminate force that slaughters millions of innocent humans, with Hawthorne’s view of nature as a vengeful force that punishes a small, symbolically significant group of sinful humans. It concludes by noting that it was Hawthorne’s brand of ecoGothic writing, not Shelley’s, that eventually became immensely popular with late-twentieth-century writers and filmmakers.


What did it mean to be a man in Scotland over the past nine centuries? Scotland, with its stereotypes of the kilted warrior and the industrial ‘hard man’, has long been characterised in masculine terms, but there has been little historical exploration of masculinity in a wider context. This interdisciplinary collection examines a diverse range of the multiple and changing forms of masculinities from the late eleventh to the late twentieth century, exploring the ways in which Scottish society through the ages defined expectations for men and their behaviour. How men reacted to those expectations is examined through sources such as documentary materials, medieval seals, romances, poetry, begging letters, police reports and court records, charity records, oral histories and personal correspondence. Focusing upon the wide range of activities and roles undertaken by men – work, fatherhood and play, violence and war, sex and commerce – the book also illustrates the range of masculinities that affected or were internalised by men. Together, the chapters illustrate some of the ways Scotland’s gender expectations have changed over the centuries and how, more generally, masculinities have informed the path of Scottish history


2009 ◽  
Vol 32 (1) ◽  
pp. 55-76
Author(s):  
Quan Manh Ha

Trey Ellis has emerged as a prominent African American writer of the late-twentieth century, despite the small number of his published works. “The New Black Aesthetic,” an essay that he first published in CaUaloo in 1989, one year after the publication of his first novel, Platitudes, stands as a manifesto that defines and articulates his perspective on the emerging black literary voices and culture of the time, and on “the future of African American artistic expression” in the postmodern era.1 According to Eric Lott, Ellis's novel parodies the literary and cultural conflict between such male experimental writers as lshmael Reed and such female realist writers as Alice Walker.2 Thus, Ellis's primary purpose in writing Platitudes is to redefine how African Americans should be represented in fiction, implying that neither of the dominant approaches can completely articulate late-twentieth-century black experience when practiced in isolation. In its final passages, Platitudes represents a synthesis of the two literary modes or styles, and it embodies quite fully the diversity of black cultural identities at the end of the twentieth century as it extends African American literature beyond racial issues. In this way, the novel exemplifies the literary agenda that Ellis suggests in his theoretical essay.


1995 ◽  
Vol 5 (2) ◽  
pp. 249-263
Author(s):  
John F. Wilson

Over the last decade, a noteworthy number of published studies have, in one fashion or another, been defined with reference to religious denominations. This is an arresting fact, for, coincidentally, the status of religious denominations in the society has been called into question. Some formerly powerful bodies have lost membership (at least relatively speaking) and now experience reduced influence, while newer forms of religious organization(s)—e.g., parachurch groups and loosely structured movements—have flourished. The most compelling recent analysis of religion in modern American society gives relatively little attention to them. Why, then, have publications in large numbers appeared, in scale almost seeming to be correlated inversely to this trend?No single answer to this question is adequate. Surely one general factor is that historians often “work out of phase” with contemporary social change. If denominations have been displaced as a form of religious institution in society in the late twentieth century, then their prominence in earlier eras is all the more intriguing.


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