We construct a website to explain how Gaussian mixture models can be optimized using the expectation maximization algorithm. Previous free, online material on this process has been extremely limited. All sources surveyed failed to entirely describe our identified criteria for an in-depth description and useful visualizations. After surveying a variety...
Published August 1979. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The indicated sum of a real scalar and a real or imaginary
vector is called a scator. Either the scalar part or the vector part
may be null. Scators generalize the complex variable to n-space.
The algebra of scators is not generally associative under multiplication
but the commutative and distributive...
Discusses the advantages of drip irrigation and how it can help growers use water efficiently. Covers basic concepts related to components and design as well as management considerations such as placement of the tape, timing and rates, maintenance, and adjustments to fertilizer rates.
Drip irrigation is the slow, even application of low-pressure water to soil and plants using plastic tubing placed near the plants’ root zone. It is an
alternative to sprinkler or furrow methods of irrigating crops. Drip irrigation can be used for crops with high or low water demands.
This publication introduces the reader to a process called lean manufacturing, sometimes called the Toyota Production System. The intended audience is manufacturers of forest products, although manufacturers of other types of products will also find this publication useful.
Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The introduction of modern trawl fishing in Norway after the Second World War was intended to be the very platform for the modernisation of the fishing industry. Right up to the end of the seventies, market orientation and the absence of state regulation of fishing were on the agenda. However,...
Fisheries biologists and other marine scientists working closely with the regional fisheries organisations (RFOs), such as the International Council for Exploration of the Sea (ICES) have developed and applied different concepts and methods, including reference points, for assessment and management of fish stocks. However, management recommendations are usually not based...
This presentation provides an introduction to the FAO-World Bank Rent Drain Study. The objective of the study is to present the story of the world's depleted and overexploited marine fisheries in economic terms.
The study develops an economic justification at the global level for restoring the health of fish stocks....
Successful regeneration of forest stands often requires that crop trees be released from competing vegetation. This publication provides basic information on how to determine if release is necessary and methods for release.
Recently reforested sites revegetate quickly after timber harvesting.
Competition for essential growth elements—sunlight, moisture, and
nutrients—often depresses the vigor and survival of the desired
crop trees. Competition comes from grasses, broadleaf weeds called forbs,
shrubs, or less valuable tree species.
The purpose of this publication is to introduce you to the world of forest
protection by: (1) providing you with broad definitions of the five
principal groups of destructive agents; and (2) presenting some information on the impacts of these groups on the forests of Oregon.
Published January 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published 1977. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This volume seeks to integrate gender analysis into the global history of science and medicine from the late Middle Ages to the present by focusing on masculinity, the part of the gender equation that has received the least attention from scholars. The premise of the volume is that social constructions...
This collection houses the proceedings of the 20th biennial conference of the International Institute of Fisheries Economics & Trade (IIFET), entitled Managing a Changing Environment. The conference took place at Auditorio Mar de Vigo in Vigo, Galicia, Spain, from 18-22 July 2022. Conference organizers were M. Dolores Garza-Gil (University of...
The purpose of this study was to research and analyze the influencing factors that have led occupational therapy further away from mental health practice. The following research questions were used as a basis to analyze the shift of the OT profession away from mental health:
1. To what extent are...
Full Text:
Introduction
On March 15, 1917 William Dunton, George Barton, Eleanor Clarke Slagle, Susan Cox Johnson
Welcome to the fascinating world of computers. Computers play an active role in everyone's life. Think about the things you do every day. You will soon realize that computers affect you directly in many ways. Banks, restaurants, department stores, toys, games, and even automobiles use computers in some form.
As...
A gene-ecological transplant study was made on populations of
the Crepis nana and C. elegans complex from the Arctic and Alpine of
North America. Transplants were collected from the Brooks Range,
Eagle Summit, and Alaska Range in Alaska, the Rocky Mountains in
Alberta, the Olympic Mountains in Washington, the Wallowa...
This programmed text covers the basic elements of the theory
of modulation. It is by no means a comprehensive reference to
modulation topics. The text is designed to introduce the student to
modulation in general terms. After successful completion of this
text, the student should be able to advance to...
According to the Operations Research Society of America, “Operations
research is concerned with scientifically deciding how to best design and
operate man-machine systems, usually under conditions requiring the allocation of scarce resources.” This publication is the first in a series describing operations research (OR) techniques that can help forest products...
This presentation provides a brief introduction to the Library of Congress Classification, including terminology, structure and notation, cuttering, geographic cutters and tables.
This is the PowerPoint (PDF) file for a 60-minute workshop for graduate students covering data management best practices. Topics covered include general recommendations for data management in terms of planning, data description (metadata), file formats and naming conventions, ethics and consent, copyright, and sharing and archiving of data. The workshop...
This is the PowerPoint (PDF) file for a 60-minute workshop for graduate students covering data management best practices. Topics covered include general recommendations for data management in terms of planning, data description (metadata), file formats and naming conventions, ethics and consent, copyright, and sharing and archiving of data. The workshop...
String theory, one of the more popular approaches to quantizing gravity, is a highly complex
theory, involving high level mathematics and physics. But the basic ideas of string theory are not inaccessible, even to the undergraduate. This document acts as report to my thesis project, the writing of A Detailed...
The sustainability of fish stocks, fishery-derived income and well-being of dependent communities are interrelated and sustainable socio-ecological systems require an understanding of all three. A newly developed evaluation tool addressing these three important facets of fishery systems is the Fishery Performance Indicators (FPIs). The FPIs were designed to associate fishery...
This publication gives a brief introduction to hazelnuts, which are sometimes called filberts. It provides an overview of hazelnut history, growth and production, geographic distribution, and hazelnut industry organizations.
The objective of this series is to help improve the competitiveness of
Oregon’s wood products manufacturers. This can be achieved by fostering a companywide focus on and dedication to continuous quality improvement.
W. Edwards Deming (1982) described the “chain reaction of quality.”
1. Quality is improved.
2. Costs decrease due...
Simulation is a powerful analytical tool for designing or experimenting with complex systems. Simulation has been defined as the process of designing a model of a real system and conducting experiments with this model either to understand the system’s behavior or to evaluate various strategies for operating it (Pegden et...
Published June 1991. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This publication is designed to help you learn more about agricultural cooperatives or to help you think through the process of organizing and
operating such a business. While the focus is on creating a new
cooperative, many of the ideas may be of interest to those thinking
about reorganizing or...