• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 11
  • 1
  • Tagged with
  • 12
  • 12
  • 3
  • 3
  • 1
  • 1
  • 1
  • 1
  • 1
  • 1
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Optimization of cable logging layout using a heuristic algorithm for network programming /

Chung, Woodam. January 2002 (has links)
Thesis (Ph. D.)--Oregon State University, 2003. / Typescript (photocopy). Includes bibliographical references (leaves 194-206). Also available on the World Wide Web.
2

Improving the performance of multispan logging systems by suspending the mainline /

Durston, Thomas A. January 1989 (has links)
Thesis (M.S.)--Oregon State University, 1989. / Abstract. Includes bibliographical references (p. 82-83a). Also available on the World Wide Web.
3

Comparison of skyline carriages for smallwood harvesting /

Balcom, John Charles. January 1983 (has links)
Thesis (M.S.)--Oregon State University, 1983. / Typescript (photocopy). Includes bibliographical references (leaves 69-71). Also available on the World Wide Web.
4

Skyline analysis with log drag /

Tobey, Allen C. January 1980 (has links)
Thesis (M.F.)--Oregon State University, 1980. / Includes bibliographical references (p. 117). Also available on the World Wide Web.
5

The dynamic behavior of a cable logging skyline and its effects on the tailspar /

Womack, Kevin C. January 1989 (has links)
Thesis (Ph. D.)--Oregon State University, 1990. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
6

Analysis of intermediate support cable logging systems

Charland, James W. 21 April 1997 (has links)
The forest products industry often uses intermediate-support cable logging systems to transport logs from the harvest site to a staging area. A method is presented to assist in the analysis and design of these cable systems. The method determines tensions in individual cables, forces on and stresses in the support trees, and the geometry of the system under load. Static equilibrium and cable length compatibility are used to generate a system of simultaneous equations. This system of coupled, non-linear algebraic equations is solved numerically using the Newton-Raphson algorithm. A good, automated initial guess for the unknown quantities, based on the physics of the problem, is provided. A model of an example intermediate support cable logging system is analyzed by the proposed approach and the resulting behavior discussed. The method includes the effects of catenary sag and elastic stretch in the cables, and elastic behavior in the support trees. Friction is ignored in the formulation. The catenary and elastic stretch methodologies for the cables are each demonstrated on a single cable span as well as on a demonstration cable system. The effect of the support tree flexibility and cable mass are found to be significant on the response of the cable logging system. The effects of elastic stretch in the cables is not found to be significant for the cable logging systems considered. / Graduation date: 1997
7

Damage to the residual stand due to skyline yarding /

Burditt, Audrey Lynn. January 1981 (has links)
Thesis (M.F.)--Oregon State University, 1982. / Includes bibliographical references (p. 69-70). Also available on the World Wide Web.
8

Prebunching with a low investment skyline yarder in thinnings /

Keller, Robert Richard. January 1979 (has links)
Thesis (M.S.)--Oregon State University, 1980. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web.
9

An investigation of the monocable system for cable yarding of small, low-value trees on steep, difficult sites /

Miyata, Edwin S. January 1991 (has links)
Thesis (Ph. D.)--University of Washington, 1991. / Vita. Includes bibliographical references (leaves [123]-138).
10

An analysis of the slackpulling forces encountered in manual thinning carriages /

Iff, Ronald H. January 1977 (has links)
Thesis (master's)--Oregon State University, 1977. / Includes bibliographical references (p. 48-49). Also available on the World Wide Web.

Page generated in 0.077 seconds