TL-4 Crash Testing of the F411 Bridge Rail
TL-4 Crash Testing of the F411 Bridge Rail

Author: Dean C. Alberson

Publisher:

Published: 2004

Total Pages: 54

ISBN-13:

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Texas Department of Transportation (TXDOT) and Florida Department of Transportation (FDOT) frequently receive requests to provide aesthetically pleasing traffic rails for use on select bridges and roadways. TxDOT, in response to providing context sensitive design alternatives, initiated a project to develop additional aesthetically pleasing rail alternatives. Under a previous TxDOT project, the F411 bridge rail was constructed and crash tested to Test Level 3 (TL-3). The TL-3 test is a 4405-lb (2000 kg) pickup impacting the railing at 25 degrees and 62.2 mi/h (100 krn/h). This test requires both containment and stability, and non-overturning. Since some breakage of the parapet is possible, potential for vehicle snagging is likely. Vehicle snagging can contribute to vehicle instabilities in the redirection sequence and potential rollover. The TxDOT F411 bridge rail contained and redirected the vehicle, which remained upright during and after the collision period. The bridge rail met the required specifications for NCHRP Report 350 test 3-11. The objective of this research is the full-scale crash test and evaluation of the F411 to Test Level 4 (TL-4). The most direct approach for accomplishing the objectives of this task is to perform a full-scale TL-4 crash test of this railing design. The TL-4 vehicle is a single-unit box-van truck impacting the railing at 15 degrees and 49.7 mi/h (80 krn/h). While containment is required, overturning of the vehicle 90 degrees is an acceptable test outcome. The TxDOT F411 bridge rail performed acceptably for NCHRP Report 350 test 4-12. Based on the performance of the F411 bridge rail in the full-scale crash test to TL-4 test conditions, the F411 may be used where containment of 18,000 lb single-unit trucks is desired.

Introductory Grammar of Amharic
Introductory Grammar of Amharic

Author: Wolf Leslau

Publisher: Otto Harrassowitz Verlag

Published: 2000

Total Pages: 318

ISBN-13: 9783447042710

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This book closes the gap for beginners who want to study the Amharic language and had difficulties in finding the right grammar for this purpose: The first grammar of Amharic, the national language of Ethiopia, was published by Hiob Ludolf in 1698. The Amharic grammar published by Praetorius in 1879 is based on Amharic religious texts and on scattered material, usually composed by missionaries. A milestone in the study of Amharic is Marcel Cohen's Traite de langue amharique (1936), but this grammar, too is not completely suited for beginners since the author's generalizations are at times aimed at linguists. The grammar that comes closest to the concept of a beginner's grammar is that of C.H. Dawkin (1960), yet this grammar is extremely short, does not give examples and does not introduce the student to the intricacies of the language.The new book gives all the grammatical forms and the sentences of the present grammar in Amharic script and in phonetic transcription. The illustrative examples have a free and a literal translation. This procedure should likewise prove to be useful for the Semitist as well as for the general linguist.

Post-secondary Distance Education in Canada
Post-secondary Distance Education in Canada

Author: Robert Arthur Sweet

Publisher: [Athabasca, Alta.] : Athabasca University : Canadian Society for Studies in Education

Published: 1989

Total Pages: 228

ISBN-13:

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Following a foreword (Ross Paul) and an introduction (Robert Sweet), three sections on instituting postsecondary distance learning systems across Canada are presented: access and student support, educational technology, and institutional response. The first section contains the following: "Women in Distance Education: Towards a Feminist Perspective" (Rebecca Coulter); "Building Bridges: Northern Native Teacher Training" (Robert Paulet); "Le Tuteur et le Support a l'Etudiant en Enseignement a Distance" (Celine Lebel, Bernard Michaud); and "Provision of Student Support Services in Distance Education: Do We Know What They Need?" (Gordon Thompson). Papers in the second section are as follows: "La Formation a Distance: Des Choix Technologiques et des Valeurs" (France Henri, Therese Lamy); "Third Generation Course Design in Distance Education" (David Kaufman); "Contradictory Directions for Distance: Cultural Miscegenation, or Cultural Symbiosis?" (Gary Boyd); "A Philosophy of Distance Education: Perceptivism" (Charles Brauner); "La Technologie Educative dans l'Enseignement a Distance, Son Role et Sa Place" (Louise Sauve et al.); and "Distance Learning using Communications Technologies in Canada" (Barbara Helm). The third section contains the following: "Diversity or Chaos in Canadian Distance Education? A View from Overseas" (Anthony Bates); "Canada's Open Universities: Issues and Prospectives" (Ross Paul); "Involvement with Distance Education: Issues for the University" (Margaret Haughey); "Distance Education and Accessibility to Canada's Community Colleges" (John Dennison); "Being Responsible to the Adult Distance Learner: A Secondary School Example" (Norman McKinnon); "Canadian Private Sector Distance Education: A Preliminary Analysis of Organizational Structure and Governance Issues" (Kenneth Slade, Robert Sweet); "Collaboration in Distance Education" (Abram Conrad, James Small); "Collaboration in Distance Education: British Columbia's Open Learning Agency" (Ian Mugridge); and "Collaboration in Distance Education: Ontario's Contact North/Contac Nord" (Terry Anderson, Connie Nelson). (NLA)

Urban Life in Contemporary China
Urban Life in Contemporary China

Author: Martin King Whyte

Publisher: University of Chicago Press

Published: 1985-11-15

Total Pages: 432

ISBN-13: 0226895491

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Through interviews with city residents, Martin King Whyte and William L. Parish provide a unique survey of urban life in the last decade of Mao Zedong's rule. They conclude that changes in society produced under communism were truly revolutionary and that, in the decade under scrutiny, the Chinese avoided ostensibly universal evils of urbanism with considerable success. At the same time, however, they find that this successful effort spawned new and equally serious urban problems—bureaucratic rigidity, low production, and more.