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As a new technique in ground improvement, geosynthetic-encased columns (GECs) have promising applications in soft soil foundation. By assuming yielding occurs in the columns while the surrounding soil and the geosynthetic remain elastic, an elastoplastic analytical procedure for foundations improved by GECs is proposed. The radial stresses that the geosynthetic provides and the elastoplastic deformations of the foundation resting on a rigid base are derived. A comparison with finite element analysis shows that the proposed method is effective and can provide a reasonable prediction of a GEC??s deformation. Subsequent parametric analysis indicates that higher geosynthetic stiffness leads to better performance of the composite foundation. The optimum length of encasement is related to the load acting on the foundation and the permissible vertical and radial displacements of the column. Moreover, as the dilation angle of the column increases, the settlement decreases, especially under high loading. The influence of the encasement is more significant in soils with smaller elastic modulus. 相似文献
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Martin Clifford James Carroll Ronald Sherriffs Harry Kybett Dave Ingram G. Paul Smeyak 《Communication Booknotes Quarterly》2013,44(1)
Martin Clifford's Microphones: How They Work and How to Use Them (Blue Ridge Summit, Pa.: TAB Books, 1977—$8.95/ 5.95) James Carroll and Ronald Sherriffs, TV Lighting Handbook ($12.95, 226 pp.) Harry Kybett, The Complete Handbook of Videocassette Recorders ($9.95/5.95, 280 pp.) Dave Ingram, The Complete Handbook of Slow-Scan TV ($14.95/9.95, 304 pp.) G. Paul Smeyak's Broadcast News Writing (Columbus, Ohio: Grid Publishing, 1977—$7.95, paper) 相似文献
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Robert Lee Chartrand James W. Norentz Jr. Rosario Joseph Tosiello James E. Brittain Harry L. Van Trees Dave Ingram 《Communication Booknotes Quarterly》2013,44(8):168-170
Robert Lee Chartrand and James W. Norentz, Jr., eds. Information Technology Serving, Society (Oxford and New York: Pergamon Press, 1979—E12.50/$25.00) Rosario Joseph Tosiello, The Birth and Early Years of the Bell Telephone System: 1376-1880 (New York: Aicno Press, 1979—$32.00) James E. Brittain, ed. Turning Points in American Electrical History (New York: Institute of Electrical and Electronic Engineers Press [dist. by John Wiley], 1977– $20.00, paper) Harry L. Van Trees, ed. Satellite Communications (New York: IEEE/John Wiley, 1979—$27.00, paper with a hardback edition available) Dave Ingram's Oscar: The Ham Radio Satellites (Blue Ridge Summit, Pa: Tab Books, 1979—$8.95/4.95) Clayton Hallmark's How to Repair Old-Time Radios (Blue Ridge Summit, Pa.: Tab Books, 1979—$12.95/7.95) Telecommunications Law Reform (American Enterprise Institute for Public Policy Research, 1150 17th St. NW, Washington, D.C. 20036 —price not given, paper) 相似文献
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Dave Tell 《Quarterly Journal of Speech》2013,99(2):163-185
I use the one-hundred-year, transatlantic circulation of Le Corbusier's grain elevator photographs to tell the story of the short but vibrant life of a mechanized rhetoric. From 1913 to 1969, these photographs were understood in the context of a mechanized rhetoric, and they starred in the iconography of modernity. From 1971 to 2010, the same photographs were contextualized by a symbolic vision of rhetoric. So contextualized, the photographs lost their prestige and became conduits through which postmodernism was introduced into architectural theory—and from there into the American academy. As a case study of rhetoric's becoming-symbolic, then, this essay foregrounds the opportunity costs of symbolic definitions of rhetoric. It suggests that the twinned introduction of symbolism and postmodernism involved a misreading of rhetorical history. 相似文献
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Dave W. Putwain Liz Connors Kevin Woods Laura J. Nicholson 《Pastoral Care in Education》2013,31(4):289-302
The Standard Assessment Tests (SATs) taken by pupils in their final year of primary schooling in England have been widely criticised for placing children under too pressure and contributing to an increase in test-related stress and anxiety. In this exploratory study we set out to explore the experiences of forthcoming SATs in a small sample of children using an appraisal model of stress and to reflect on whether these criticisms are justified. Results from focus groups with pupils and interviews with class and head teachers suggested that there was diversity in pupils’ experiences their tests. The pressures associated with SATs did not necessarily lead to negative outcomes and some children described SATs in more positive ways, as challenging rather than threatening. Self-worth judgements played a central role in individual-level appraisal and may also provide a useful link to discourses surrounding the value of academic credentials. 相似文献
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This paper sets out to appraise (from the perspective of members) the impact of a localized, football-based mental health intervention. Commissioned in late 2015, the ‘Redcar and Cleveland Boot Room (BR)’ was implemented in response to mass redundancy in the local area, coupled with regional suicide rates in men that exceed the national average. Interactive discussions with BR members revealed that: (a) the language of football and shared identity were important for initiating and sustaining engagement in the BR; (b) peer-support and mentoring combined with member-led activities were active ingredients of the BR and (c) that the BR was an effective vehicle for building mental health resilience. This evaluation adds to the evidence base on the value of football as a context to engage adult males in community-based interventions targeting mental health resilience. 相似文献