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Filtering by: Contributor Dilworth, J. R. Remove constraint Contributor: Dilworth, J. R.

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Aerial photo-mensuration tables

Creator:

Dilworth, J. R. (John Richard), 1914-

Abstract:

Aerial photo cruising that can be accomplished quickly, cheaply and with a satisfactory degree of accuracy has been the goal of many forest mensurationists throughout the world. As early as 1925, photo cruising was accomplished successfully by Professor R. Hugershoff and his associates in Germany. The development of this technique...

Resource Type:

Technical Report

Full Text:

multiple regression method based on 1,250 trees. Site indexes 100-160. J. R. Dilworth, 1959. TABLE II
A comparison of some estimators in forest sampling

Creator:

Ek, Alan R.

Abstract:

The objectives of this study were to ascertain the relative precision and accuracy of certain estimators on several forest populations and to determine if relative performance could be predicted from knowledge of population characteristics. Performance was tested on three populations of trees drawn from stands in northern Ontario. The first...

Resource Type:

Dissertation
Comparative efficiency of the wedge prism method and the circular plot method in estimating volumes of Douglas-fir stands

Creator:

Richardson, James Hollins

Resource Type:

Masters Thesis
A proposed plan for the administration of timber sales by the Oregon State Board of Forestry

Creator:

Helland, Marvin Leroy

Resource Type:

Masters Thesis
The relationship of the white-footed deer mouse to reforestation by direct seeding in the Tillamook burn

Creator:

Hooven, Edward F. (Edward Frank)

Resource Type:

Masters Thesis
Vegetative factors influencing the germination and survival of Douglas-fir seeds and seedlings in the Tillamook Burn

Creator:

Lavender, Denis P.

Resource Type:

Masters Thesis
The relationship of aspect and topographic position to the occurrence of Douglas-fir bark beetle damage in western Oregon and southwestern Washington

Creator:

Rossheim, John David

Resource Type:

Masters Thesis
Ambrosia-beetle infestation of down coniferous timber in Benton County, Oregon

Creator:

Johnson, Norman E.

Resource Type:

Masters Thesis
A method of forest soil-site quality investigation

Creator:

Collins, Dana Huntley

Resource Type:

Masters Thesis
Direct seeding of Douglas fir with special reference to survival

Creator:

Finnis, John Michael

Resource Type:

Masters Thesis

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Academic Affiliation

Chemistry1,512
Electrical Engineering and Computer Science1,165
Fisheries and Wildlife1,107
College of Forestry858
Botany and Plant Pathology802
more Academic Affiliations »

Advisor

Cox, George B.116
Kronstad, Warren E.86
Clinton, R. J.77
Appleby, Arnold P.74
Bogart, Ralph73
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1902 to 2025

View distribution

Unknown 20,809

Committee Member

Tadepalli, Prasad148
Steel, Brent S.104
Liu, Huaping101
Bose, Bella97
Fern, Alan83
more Committee Members »

Conference Name

International Institute of Fisheries Economics & Trade829
Pacific Northwest Insect Management Conference173
Western Dry Kiln Association141
Western Orchard Pest and Disease Management Conference124
Pacific Northwest Vegetable Insect Conference64
more Conference Names »

Conference Section/Track

Pome Fruits24
Foliage and Seed-Feeding and Mining Insects23
Soil Arthropods23
Mites and Sap-Sucking Insects18
Chemical Control/New Products16
more Conference Section/Tracks »

Creator

Forest Products Laboratory (U.S.)1,022
Oregon State University. Agricultural Experiment Station988
Oregon State University. Extension Service980
Oregon State College. Agricultural Experiment Station381
Oregon. State Game Commission322
more Creators »

Contributor

Osborne, James24
Skinkis, Patricia A.24
William, Ray D.19
Dykeman, Cass16
Peachey, Ed16
more Contributors »

Date

Date range begin – Date range end

Current results range from 1857 to 2924

View distribution

Unknown 2,456

Decade

1950-19592,562
1940-19491,654
1930-19391,264
1920-1929428
1910-1919332
1900-1909145
1890-1899103
1880-188923
1870-18797
1860-18692
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Degree Field

Chemistry1,446
Education1,446
Electrical and Computer Engineering1,253
Mechanical Engineering1,030
Civil Engineering1,001
more Degree Fields »

Degree Level

Master's16,384
Doctoral10,203
Bachelor's2,591
Certificate6

Degree Name

Master of Science (M.S.)14,564
Doctor of Philosophy (Ph.D.)9,665
Honors Bachelor of Science (H.B.S.)1,505
Bachelor of Science (B.S.)759
Master of Arts (M.A.)656
more Degree Names »

File Format

application/pdf4,621
pdf525
application/msword58
application/vnd.ms-powerpoint7
pptx3
more File Formats »

Funding Body

Federal Highway Administration (FHWA)4
American Vineyard Foundation (AVF) Project Number 2021-24791
Hewlett-Packard1
Intel Corporation1
Ministry of Higher Education, Science, Research, and Innovation of Thailand1
more Funding Bodies »

Language

English [eng]47,208
Spanish; Castilian [spa]25
French [fre]16
German [ger]4
Arabic [ara]2
more Languages »

License

All rights reserved10,732
Attribution 4.0 (CC BY 4.0)726
Attribution 3.0 United States210
Attribution-NonCommercial 4.0 (CC BY-NC 4.0)85
Public Domain Mark 1.075
more Licenses »

Location

Oregon, Oregon, United States, (Administrative Boundary)13
Corvallis, Oregon, United States, (Populated Place)6
Willamette Valley, Oregon, United States, (Hypsographic)6
Willamette Valley, Multnomah County, Oregon, United States5
H J Andrews Experimental Forest, Oregon, United States, (Vegetation)3
more Locations »

Non-Academic Affiliation

Oregon State University. Graduate School22,257
Oregon State University. Agricultural Experiment Station2,627
Oregon State University. Honors College1,589
Oregon State University. Extension Service1,043
Oregon. Department of Fish and Wildlife678
more Non-Academic Affiliations »

Peer Reviewed

No32,578
Yes6,233

Resource Type

Masters Thesis14,997
Dissertation10,200
Technical Report7,513
Article6,209
Honors College Thesis1,571
more Resource Types »

Rights Statement

Copyright Not Evaluated30,740
In Copyright17,582
No Copyright - United States1,190
In Copyright - Non-Commercial Use Permitted62
In Copyright - Educational Use Permitted61
more Rights Statements »

Subject

Fisheries -- Economic aspects -- Congresses404
Agricultural pests -- Control -- Congresses380
Fisheries -- Oregon339
Game and game-birds -- Oregon310
Game protection -- Oregon309
more Subjects »

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