Intergranular stress corrosion cracking of sensitised austenitic stainless steel

Imperial Users onl

Determining the Magnetism of Small Spacecraft

A satellite has permanent magnetism associated with it resulting from the magnetization of ferrous items distributed about its volume. The magnetism will interact with the earth ! s magnetic field producing a torque about the center of gravity of the satellite. If this torque is large, it can misalign the satellite and cause it to oscillate in its orbit. Prior to launch the magnetic field from the permanent magnetism can be measured and analyzed to determine how much torque will be produced by an external magnetic field. Ideally there exists some dipole moment called the effective or resultant dipole moment of the satellite, which produces an equivalent interaction with respect to torque in the earth f s magnetic field. This paper contains a general discussion of the process for defining the effective dipole moment of a satellite. Illustrations are included to clarify the discussion. A description is given of the coil facility in which the magnetic testing is accomplished and of the method for measuring the magnetic field of the satellite. Parameters that affect the measurements are described, e.g., the effect of instrument sensitivity and distance of measurement on the smallest measurable dipole moment. Basic analysis procedures are discussed, and possible methods for improving and extending the procedures are given. Computer generated curves are included as examples of typical measurement data. No attempt is made in this paper to provide thorough mathematical details although mention is made of harmonic analysis techniques and methods of least squares approximation. The purpose herein is to survey the general procedures for measuring and analyzing the magnetism of satellites

Backcountry Robbers, River Pirates, and Brawling Boatmen: Transnational Banditry in Antebellum U.S. Frontier Literature

This dissertation argues that in the midst of an uncertain but formative period of continental expansion, a revolutionary brand of popular crime fiction appeared and flourished in the pages of cheap periodicals and paperback novels. It consisted of conventional adventure romances and pulpy proto-dime novels that focused on frontier violence and backwoods criminals. Often popular in their day but quickly forgotten, these texts have been given short shrift by scholars and critics due to their shoddiness or ostensibly minor role in literary history. I contend that this obscure brand of crime fiction in fact has much to offer in the ongoing conversation about geographical borders and the roles they play in our conception of nation, culture, and literature. I will demonstrate the ways in which a specific group of American literary figures – Steelkilt, John Murrell, and Joaquin Murieta, among others – all of whom were featured in popular fiction between the 1830s and 1850s, dramatically altered the representation of crime in antebellum U.S. fiction, while also helping to shape national conceptions of expansion, imperialism, region, and identity. Though often subsumed under the umbrellas of various genres, I consider the narratives containing these characters to be forerunners of a transnational crime genre that continues to be popular today. The texts under consideration in this study begin with Morgan Neville’s 1828 sketch “Last of the Boatmen,” continue through the crime novels of the 1830s and 40s penned by Emerson Bennett and H.R. Howard, and reach their murderous pinnacle in Herman Melville’s Moby Dick (1851) and John Rollin Ridge’s The Life and Adventures of Joaquin Murieta (1854). The transnational frontier bandits developed in these pages represent the unstable and at times impossible nature of the U.S. ‘civilizing’ mission. My dissertation aims to perform a threefold critical intervention: to argue that these characters’ appearances in popular texts reveal disturbing fissures in the conventional narrative of U.S. western expansion and national identity, to show that the regions they inhabit function as alien or non-national spaces characterized by culturally polyglot populations and unmapped terrain; and, finally, to demonstrate the overall impact they have on popular U.S. literature and culture in the 1830s, 40s and 50s

Art, Education, Work, and Leisure: Tangles in the Lifelong Learning Network

Although the field of art education has, in recent years, acknowledged the prevalence of non-formal educational sites, our literature is divided on whether this trend poses an opportunity for cooperation and strength or a threat to the status of art as a school subject. This paper consults the literature of critical theory within the domains of art, education, and leisure studies in order to examine the relationship between formal and non-formal art education. First, it considers ways in which tradition conceptualizations of art, education, leisure, and work foster an acceptance of art as experience and knowledge to be gained outside of school. Second, it explores the notions of lifelong learning and education, which are frequently offered as umbrellas under which school and community-based art education can peacefully co-exist. The paper suggests that neither an uncritical call for cooperation nor a more entrenched territoriality between formal and non-formal institutions is likely to serve the future interests of art education. Rather, a complex problem is revealed which requires a reconceptualization of education, a consideration of values surrounding democratic access to knowledge, and a challenge to work toward more egalitarian institutional and social structures

Parents, Middle-class-ness, and Out-of-School Art Education

This article explores the intersections of middle-class parenting practices and out-of-school art education. Drawing on the work of Lareau (2003) and Kusserow (2004) it argues that middle-class parents use a particular logic of parenting that involves the ongoing cultivation of children in hopes of promoting future security and life advantage. I argue that out-of-school art education is often taken up within this parenting practice in ways that serve the cultivation of both general and specific middle-class values

Mars mission solar array Semiannual progress report, period ending 31 Dec. 1969

Design and testing of beryllium-structure solar panel for Mars missio

Improving Document Retention Through Data Management Dashboards

Transportation projects continue to get more complex, requiring multi-layer collaboration, documentation, compliance, and more. Through specific use cases, we will demonstrate how project teams can use innovative platforms to build data management dashboards for project management and document retention for mid-West and Indiana mobility projects. This specialized visual tool brings important documents and data together, incorporates customized information, and evolves it to meet client needs in modern and easy to understand metrics