Index Catalog // ScholarsArchive@OSU

Effects of inlet conditions of culvert discharge

Creator:: Anaya, Jesus A.
Abstract:: Oregon has thousands of culverts along mountainous roads that interact with perennial streams, intermittent streams, and intercepted subsurface flow from hill slopes. Culverts installed at stream crossings are designed to move water under the road and avoid failure of the fill. Similarly, ditch relief culverts transfer water through a road...
Resource Type:: Capstone Project

Predicting and quantifying recreation and harvesting interaction with a geographic information system

Creator:: Boyd, David W.
Abstract:: This paper documents a study of the potential for using Arc View, a GIS software program, to evaluate possible interactions between timber harvesting impacts and recreational uses of adjacent forest roads and trails. Data on hiking, biking and horse riding was used to define recreational uses on specific trails. Harvesting...
Resource Type:: Capstone Project

Estimating machine rates and production for selected forest harvesting machines operating in the western United States and determining the most economical machine combinations under representative conditions in Turkey

Creator:: Akay, Abdullah Emin
Abstract:: During the last decades, there has been increasing interest in ground-based mechanized harvesting systems in the western United States as harvest of second growth increased. A major reason for that interest is that labor productivity using conventional methods decreases with smaller tree size. In Turkey, the application of mechanization is...
Resource Type:: Capstone Project

Estimating large woody debris recruitment from adjacent riparian areas

Creator:: Minor, Kathleen P.
Abstract:: Large woody debris recruitment to streams from adjacent riparian forests influences stream channel morphology, sediment routing, and fish habitat. A mathematical model was developed to 1) determine whether the trees in a stand adjacent to a stream, upon falling, would provide large woody debris of a specified size to the...
Resource Type:: Capstone Project

The Limber Jim case study : production and economics of a skyline system in a thinning/fuels reduction setting of a mixed conifer stand in the Blue Mountains of northeastern Oregon

Creator:: Doyal, James A.
Abstract:: Forest managers in the Blue Mountains, of northeastern Oregon are currently faced with vast areas of forests with health problems and high fuel loadings. These conditions resulted from a combination of insect infestations, past management practices and the elimination of fire from the local ecosystems. These forests are now overstocked,...
Resource Type:: Capstone Project

Preliminary planning of forest roads using ARC GRID

Creator:: Xu, Shenglin
Abstract:: Forest road planning is importaht in logging operations, because it can affect feasibility and cost of forest operations. Due to rapid advances in computer hardware, GIS software, and remote sensing techniques, computer forest road planning models using GIS are becoming practical. DEM data at 30 meter resolution are common and...
Resource Type:: Capstone Project

Production and cost analysis of a helicopter thinning operation in the Oregon Coast Range and comparison to HELIPACE production estimates

Creator:: Born, Robert Gregory
Abstract:: With increasing environmental concerns, short harvesting seasons, salvage logging needs, and limited road access, helicopter yarding is becoming attractive to many land managers. Most helicopter yarding has occurred on clearcut or evenaged management areas containing large, valuable timber. Very little helicopter yarding has occurred in stands of smaller, less valuable...
Resource Type:: Capstone Project

Image editing: a photoshop tutorial for natural resource managers

Creator:: Mitchell, Dana
Abstract:: Land managers are increasingly turning to a new tool for visually depicting, analyzing, and communicating the technical aspects of forestry, specifically in the area of timber harvest and unit design. This tool is computer-based image editing software. In the 1980's, it was referred to as image capture technology, or ICT....
Resource Type:: Capstone Project

Critique of seven helicopter timber sales with recommendations for improved planning

Creator:: Petaisto, Inga T.
Abstract:: The focus of this study centers around the economic, technical, and environmental effects analysis of seven helicopter timber sales on four different national forests in Oregon and Washington. This paper is a constructive critique of these seven sales based on the author's personal observations and data collected from planning documents,...
Resource Type:: Capstone Project

The DEERHORN case study: a production and cost analysis of a single-grip harvester and small cable yarder performing a thinning/salvage operation in eastern Oregon.

Creator:: Brown, Cameron G.
Abstract:: Land managers in the Blue Mountains of eastern Oregon are currently faced with large areas of forest with health problems and extreme levels of fuel loading in the stand and on the forest floor. These conditions resulted from a combination of insect infestations, past management practices and the elimination of...
Resource Type:: Capstone Project

Soil comopaction study on a cut-to-length mechanized harvesting system

Creator:: Armlovich, David
Abstract:: This study looked at the soil compaction effects resulting from a cut-to-length harvest system on an area in the western Cascade Range of Oregon. The cut-to-length harvest system is a mechanized system in which trees are fell, deliinbed, and bucked into short log lengths by a mechanical harvester. Logs are...
Resource Type:: Capstone Project

Soil compaction from ground-based thinning and effects of subsequent skid trail tillage in a Douglas-fir stand

Creator:: Hogervorst, Johan Bryan
Abstract:: Although soil tillage has been used successfully to alleviate compaction of forest soil after logging in a number of management contexts, little is known about the feasibility of tilling in residual stands. In an attempt to weigh the benefits of tillage against possible damage done to residual trees during tillage,...
Resource Type:: Capstone Project

Logging planning, felling, and yarding costs in five alternative skyline group selection harvests

Creator:: Edwards, Richard M.
Abstract:: Alternative silvicultural systems, such as group selections, have recently come into vogue in the U.S. Pacific Northwest in response to political and public pressure against traditional, even-aged silviculture. There is also interest in silvicultural systems for multiple resources. Little is known about planning logistics, operational requirements, and harvest costs for...
Resource Type:: Capstone Project

Rigid link and catenary skyline analysis programs for microcomputers

Creator:: Kendrick, David E.
Abstract:: Skyline logging is a commonly used method of harvesting logs, particularly on steep slopes. Logging systems planners frequently solve two kinds of skyline analysis problems. The first is the maximum payload problem and the second is the standing skyline load path problem. Computer assisted skyline analysis techniques have been available...
Resource Type:: Capstone Project

The ecology and management of invasive plant species on tropical islands

Creator:: Hooper, Carolina
Abstract:: Tropical island ecosystems have proven to be inordinately vulnerable to invasions by exotic plants and animals. Today these islands only contain small remnant populations of the original flora and fauna, and these populations are facing increasing pressure from invasive plants. This paper attempts to answer four important questions whose solutions...
Resource Type:: Capstone Project

Tactical forest planning using the scheduling and network analysis program (SNAP II)

Creator:: Mafera, Thomas E.
Abstract:: Approximately 750 million acres, or one-third, of the total area in the United States is in forest land. The United States Forest Service, a 34,000 person agency of the Department of Agriculture, is responsible for the management of roughly 20 percent of the forest land in the United States. The...
Resource Type:: Capstone Project

Selecting wire rope design factors in cable yarding: a review and proposal

Creator:: Rheinberger, Steven Joseph
Abstract:: Traditional rationale for design factors is briefly reviewed. Methodologies for determining these traditional design factors are lacking and are usually based upon subjective reasons which result in applying a design factor of 3.0 in all cases (western United States). Factors which affect wire rope life are discussed. These factors include...
Resource Type:: Capstone Project

A decision support system for mechanized harvesting

Creator:: Steffert, Alan H.
Abstract:: When considering a mechanized harvesting operation, the harvest planner or researcher is faced with a multitude of modern equipment choices. A decision support system (DSS) is presented to assist in selecting the appropriate level of mechanization. The DSS examines individual machines and formulates mechanized harvesting systems from them that adequately...
Resource Type:: Capstone Project

Tracking optimal bucking

Creator:: Beemer, Bryan D.
Abstract:: Recent developments in handheld computers now make it possible to improve log value recovery by bucking (cross cutting) a tree into log lengths that maximize its value. The use of a handheld computer allows these decisions to be made at the stump for each individual tree. One program developed for...
Resource Type:: Capstone Project

The development of a rail transport model and its use for the prediction of rail shipping costs for forest products in Oregon

Creator:: Boston, Kevin Donald
Abstract:: Transportation costs compose fifty to sixty percent of the total operating cost in the forest products industry. This paper develops a framework for incorporating rail transportation into a statewide multi-modal transportation planning model. It will allow for the analysis of various transportation scenarios that can possibly increase the efficiency of...
Resource Type:: Capstone Project

Alternative timber transportation system for Pakistan

Creator:: Iqbal, Mohammad
Abstract:: In Pakistan, forest land is either owned by government or at least managed by provincial forest service if it is private land. Timber is logged by contractors and delivered by small four wheel drive trucks over low standard roads to a transfer yard, where it is unloaded to await transport...
Resource Type:: Capstone Project

The use of small helicopters for commercial thinning in steep, mountainous terrain

Creator:: Flatten, Lloyd Bradley
Abstract:: A great deal of research has taken place in an effort to find more economically efficient yarding systems for commercial thinnings. Almost all of this research has centered on tractors or small yarders with limited capabilities in terms of long yarding distances. The purpose of this study is to determine...
Resource Type:: Capstone Project

Prescription for wayrot stand 358 Prairie City Ranger District Malheur National Forest

Creator:: Hodgson, Gail E.
Resource Type:: Capstone Project

Evaluation of productivity and cost of chain saw vs manual tools in the Chir pine forests of Pakistan

Creator:: Siddiqui, Asif Kamal
Abstract:: To improve the present state of Forestry and the condition of forest workers is an important goal to be achieved in developing countries. With the growth of population, demand for wood products is increasing tremendously. Prices have gone up manyfold. One way to meet this demand is to increase productivity...
Resource Type:: Capstone Project

Effects of tire deflection on rear axle torque

Creator:: Simonson, Robert
Abstract:: This paper presents data obtained in the study of an 18-wheel western type log truck outfitted with CTI and carrying a highway load. Operating on grades of 20 and 25 percent, drive shaft torque was monitored to quantify stress levels on the drive train while varying tire deflection. This paper...
Resource Type:: Capstone Project

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