People are increasingly staring at device screens which emit predominantly blue light. Because LED technology is relatively new, we do not know what effects blue light has on our long-term health. Blue light exposure leads to a dramatic decrease in longevity in Drosophila, thus this study aims to explore possible...
An automated library system should be capable of providing at least all of the information and capabilities of existing manual catalogs. In addition, an automated system must provide the capability of manipulating that information to produce varying types of reports and statistics. This paper briefly:
- describes historical representations of...
This thesis consists of five chapters: a general introduction, two manuscripts, a collection of published lesson plans, and a general conclusion. The works collected herein are united by the common theme of practical applications in plant breeding. The first manuscript reports a study performed on five malting barley lines grown...
The conventional way of debugging is to examine the program's state at various points during execution. With the addition of message passing as a means of communication and synchronization in message passing programs, the state of pending message operations also needs to be examined. Current parallel debuggers or analysis tools...
The Professional Science Master’s program requires all graduates to complete an internship and prepare a descriptive report in lieu of a master’s thesis. In 2009 I concluded a three-month full-time internship with the Institute for Natural Resources (INR). Oregon Explorer (OE) is a collaborative effort between INR and Oregon State...
Writing within Discipline is a pedagogical model that aims to engage students in active learning and to develop critical thinking and writing skills within the norms of a particular discipline. However, lack of faculty time for grading writing products impedes its broader implementation. Web based peer review programs have been...
This is an empirical analysis of the Malindi Ungwana Bay prawn fishery in the coast of Kenya. A resource allocation problem is at the heart of the conflict between artisanal fishers and commercial trawlers exploiting the prawn fishery in the bay. The Prawn Fishery Management plan by the government has...
Future quantum technologies will require high-efficiency, on-demand sources of entangled photons. A possible route to building such light sources employs two-dimensional (2D) semiconductors interfaced with a source of Cooper pairs. To investigate the possibility of such devices, we are testing methods to make high transparency n-type contacts, p-type contacts, and...
Wildfires can create alternative pathways for forest development, and wildfires have expanded in size, frequency, intensity, and severity across the western United States. The purpose of this paper is to compare forest development of a mature Douglas-fir forest in western Oregon across fire severities. Postburn field measurements were collected in...
The purpose of this study is to examine the relationship between land management practices of Indian communities prior to contact with Europeans and the nature or character of subsequent catastrophic forest fires in the Oregon Coast Range. The research focus is spatial and temporal patterns of Indian burning across the...
The study collected data using ARCGIS Field Maps from a field survey of plants at six (6) sites in Fairfield County, CT. The sites included three (3) urban and three (3) suburban locations. A primary goal of this study was to determine whether there are differences in the extent of...
Thermal oxidation of methyl oleate was studied over a range of temperatures from 50 C to 150 C for periods of time up to 30 min. Degradation was quantitatively followed by gas liquid chromatography (GLC) and liquid scintillation counting of the products of methyl oleate-U-14C heated under a stream of...
Pesticide chemists have recognized since the 1940's that ultraviolet light was deleterious to the insecticidal properties of certain compounds. However, it has been only within the last 15 years that a number of photodecomposition products of the chlorinated hydrocarbon
insecticides have been isolated and identified. The degradation of insecticides by...
In this dissertation, we introduce a family of fully discrete finite difference time-domain (FDTD) methods for Maxwell’s equations in linear and nonlinear materials. Onecategory of methods is constructed using multiscale techniques involving operator splittings. We present the sequential splitting scheme, the Strang Marchuk splitting scheme,the weighted sequential splitting scheme including...
Monitoring the performance of electrical utility assets is a critical activity for power companies. Gas chromatography has long been established as the analytical technique of choice for assessment of transformer fault conditions by detection of the presence of key fault gases through analysis of transformer oil. Chromatography is one of...
Hydrogels have been attractive for use as a medium in porous flow studies,
but have always been limited in this role because of their poor mechanical properties.
This project analyzes and tests two recently developed hydrogels,
poly(methacrylamide-co-methacrylic acid) (PMM), and a heat-treated long chain
PVA hydrogel. Particle image velocimetry (PIV)...
The material in this paper is divided into the following four chapters for convenience. Chapter 1 explains, how the idea of fault testing changed from testing the machine instructions to testing the hardware in logic circuits. Chapters 2, 3 and 4 present the different approaches considered, namely:
1. Path sensitizing...
The objectification of women is a scourge of society, related to a host of negative mental and physical health implications for women. Objectification is largely influenced by the types of clothing worn. How much is objectification modified by contextual features (e.g., the situations the clothes are worn in)? In two...
A variety of important machine learning applications require predictions on test data with different characteristics than the data on which a model was trained and validated. In particular, test data may have a different relative frequency of positives and negatives (i.e., class distribution) and/or different mislabeling costs of false positive...
Shape transformation is a technique for gradually changing one geometric shape to another. A recent approach presents the use of thin-plate radial basis functions as opposed to traditional "blobby sphere" implicit functions. Without the explicit evaluation of he energy function, this approach combined the two traditional steps into one by...
The COVID-19 pandemic has disrupted life for populations all over the world. One population that has been uniquely impacted by the pandemic is the student-athlete population. Over the last two years, universities took safety precautions by first sending students home and moving teaching and learning to a remote format and...
Motion planning is a cornerstone of autonomous robots, enabling robots to safely and efficiently perform tasks such as package delivery, infrastructure inspection, and manipulation. However, as the field of robotics matures, robotic systems are being developed that (1) are challenging to analytically model, (2) require computationally expensive model-based controllers, and...
In this project we have implemented an Object-Oriented simulation model of a Digital Switching System. We analyzed various software components of a Digital Switching System. The call processing module is the principal component and the most complex of all. The features of Object-Oriented principles were investigated and found to fit...
The foraging distance of bees has been intensely studied. In contrast, little is known about the factors that determine bee dispersal distance, especially on large spatial scales. Eucera (Peponapis) pruinosa is a wild ground nesting bee that exclusively collects pollen from squash in the genus Cucurbita. Although the bee occurs...
In taking a multidimensional approach to selected areas of the much neglected sport marriage, this article identifies and examines the survival strategies used by wives in coping with stressful occupational events in the careers of their husbands. Using a control management perspective, the idea of control work is introduced and...
College students today have a lot to contend with in their journey as young adults. The college years are often a transitional time for students, and as such there is a vulnerability to mental health declines. Financial, academic, and social strain are some of the factors that can contribute to...
This research solves the problem of connecting a Macintosh to a Unix machine and presenting the Macintosh Desktop to Unix. Unix Files can be viewed. copied. renamed and opened in the same manner as Macintosh files. Unix programs and shell commands can be defined and attached to Macintosh menus and...
The worksheet is designed to show a municipal biosolids manager how many acres are needed for land application of biosolids at an agronomic rate, based on crop nitrogen (N) requirements.
The worksheet is based on a peer-reviewed Extension publication: PNW 511, Worksheet for Calculating Biosolids Application Rates in Agriculture authored...
System architectures for interconnecting large numbers of processors are being widely studied [AG82,TH75,TR82]. Of particular interest in such architectures is the exploitation of concurrency among processors. This concurrency can be parallelism, in which different parts of a single data case are processed at the same time, or pipelining, in which...
This grant supported acquisition of a minicomputer system for departmental research. The equipment selected is a DEC VAX-11/750 system, installed in remodeled space in the Computer Science (formerly Farm Crops) Building. Grant funds for equipment acquisition were supplemented by support from the Tektronix Foundation.
After completion of the physical facilities...
We are happy to present a viticulture-based newsletter this quarter, focusing on some of the challenges that were apparent in vineyard management during 2010. While the Botrytis challenges are fresh in the minds of vineyard managers, Walt Mahaffee provides a summary of a replicated field trial using Botrytis sprays. Vaughn...
Beginning the 2008 Season… It appears that the spring weather we’ve been waiting for has finally arrived! Bud break is commencing, a week or so later than 2007 due to cold weather in most of Western Oregon. With the advent of the growing season, this edition of the OSU Wine...
In this August issue, we focus on the grape berry. Articles within cover topics of cluster thinning, berry ripening, harvest., and various pests that can damage berries. Also, we provide information about how to conduct vine nutrient sampling at véraison to be sure to keep up with your nutrient program....
Welcome to the September 2010 edition of OSU Vineyard Notes. We take this opportunity to make you aware of pest-related problems in the vineyard. This 2010 season has been a challenge for many, and the challenges do not stop here. Jay Pscheidt, OSU Extension Plant Pathology Specialist, reports on new...
This paper reports the findings of two studies conducted at Oregon State University. The first set of studies compares use of header comments versus mnemonic procedure and function names by programmers performing tasks relating to modification tasks. The second study compares the use of header comments versus in-line comments when...
The main objective of this study is to assess seafood marketing and pathway in Nigerian coastline (the case of Lagos and Ondo States in the South West, Nigeria).
The specific objectives were to determine the: demographic characteristics of seafood marketers in the study area; gender pathway involved in seafood marketing...
Haiti is far from achieving the UN goal of sanitation access for all; 20% Haitians have no sanitation access, and less than 0.1% of urban excreta is safely managed. Container-Based Sanitation (CBS) may be a key tool for achieving equitable sanitation coverage in Haiti’s cities. CBS is a sanitation strategy...
The project aims at building an application that would simulate a transparency that can either be overlaid on top of the graphical display of another application or used as a stand-alone by accepting input from a keyboard or a mouse to enhance a presentation. The project provides an environment to...
We have developed SearchPak, a machine independent parallel searching tool on shared and distributed memory machines. It can be used for combinatorial optimization problems and OR-parallel computations as well. Both depth-first and best-first search of the state space can be performed using the SearchPak. With SearchPak, a user just provides...
We present a model for a distributed virtual market place that can be constructed on the Internet to support selling and buying requests, such as those found as classified advertisements. One requirement for a transaction to take place in the virtual market place is that a sell request and a...
Data structures are essential for any programming task. Most of modem programming languages have a library of reusable data structures. In this project, Smalltalk-like collection classes have been implemented as a Java package. This package, collections, contains several useful data structures such as binary tree, B-Tree, bag, list, hash table...
In this expanded new edition of Living with Earthquakes, Robert Yeats, a leading authority on earthquakes in California and the Pacific Northwest, describes the threat posed by the Cascadia Subduction Zone, a great earthquake fault which runs for hundreds of miles offshore from British Columbia to northern California. New research...
The information in these reports is for the purpose of informing cooperators in industry, colleagues at other universities, and others of the results of research in field crops. Reference to products and companies in these publications is for the specific information only and does not endorse or recommend that product...
Hydraulic conductance of leaves (K[subscript leaf]) typically decreases with increasing water stress and recent studies have proposed different mechanisms responsible for decreasing K[subscript leaf]. We measured K[subscript leaf] concurrently with ultrasonic acoustic emissions (UAEs) in dehydrating leaves of several species to determine whether declining K[subscript leaf] was associated with xylem...
On a global scale, illicit economies have dramatic impacts on the physical environment. Cocaine trafficking has been recognized as a major driver of deforestation inside Central American protected areas. A key problem in studying and managing the environmental impacts of illicit economic activity is the difficulty in obtaining reliable data....
The end of the European phase of the war lessens somewhat the demands on the military for food in one theater of operations. The successful prosecution of the Pacific phase of the war and the needs of the liberated peoples of the world, plus the civilian requirements of the allied...
The growing season is in full swing. As growers are busy doing canopy management in the vineyards and wine makers are preparing for the upcoming vintage, OSU faculty are working hard on their field research trials and extension programs to advance viticulture and enology research and education. We’ve been busy...
This issue is packed with new information from various research trials conducted here in Oregon, whether it is from vineyard plots, the wine lab, or the growth chamber, results are likely to have impact on vineyard and winery production here in Oregon. James Osborne, Enology Extension Specialist, opens this month’s...
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
The purpose of this project was to begin to understand the effect that the first year of college had on OSU students. The Your First College Year survey was selected as the initial method to begin to gather institutional data that could help to inform conversations directed to program planning...
OSU has engaged in surveying entering first year students during the summer START sessions for seven years using the CIRP Freshman Survey. Understanding the experiences, expectations, and goals of first year students aids in planning and developing services that will better meet the needs of this ever-changing population of students....
First recorded as a problem in 2003, wildfire smoke has been found to affect wine grapes and lead to alterations to a wine’s flavor profile. Smoke can carry organic volatile compounds over vast distances, which can then be deposited on grapes and are absorbed into the grape’s cells. These compounds...
Prior research has suggested that homework activities that encourage learners to think more conceptually about to-be-learned material can have positive benefits on overall content learning. Can such activities be implemented successfully in online coursework, and does it produce the anticipated benefit? In two sections of an online Psychology course, participants...
This investigation was a trial to check the possibility of developing a frozen blackberry puree dessert. A blend of different varieties and selections of blackberries, as it may be expected in commercial production was preferred to provide the fruit-puree-mix.
Several stabilizers bearing different commercial names were added to the fruit...
The proposal for the research project reported herein was principally prepared during 1968 and the starting date for this study was established as September 1, 1969. In the approximately four years from the preparation of this proposal to the completion of this final report, the state of the art for...
The Multi-Institutional Study of Leadership Oregon State University Results contains information on the results of a leadership study conducted in the Spring of 2006. The theoretical underpinning of the study was the social change model of leadership. Results contain information on factors believed to influence the development of leadership skills...
Ethical and training standards across counseling-related professions contain competencies related to race and ethnicity as necessary research and practice components. One such counseling-related sub-specialty is Play Therapy, which acknowledges that professionals utilizing play therapy techniques must consider racial and cultural context, trauma, and intersectionality when working with children. However, there...
Throughout their lifetime individuals are exposed to complex mixtures of chemicals. The study of chemical mixtures is an internationally recognized research priority, but seemingly complex challenge. To reduce the intricacy of studying mixtures, researchers have identified different prioritization methods based on exposure or the toxicity of chemicals. However, understanding the...
The recently emerged Grapevine Red Botch Virus (GRBV) impedes proper berry ripening primarily by reducing sugar accumulation and color development in red-fruited Vitis vinifera L. cultivars. To date, there is no recommended management strategy for virus spread or the impacts of the disease beyond removal and replacement of infected vines....
This newsletter comes as many of you anxiously await this year’s harvest. We have taken this opportunity to focus on berry development in the viticulture section. Laurent Deluc, Grape Researcher, writes about his research on berry ripening synchronization, and Viticulture Extension Specialist, Patty Skinkis, provides information on berry development and...
The “9th Okazaki Biology Conference: Marine Biology II” held at the National Institute for Basic Biology (NIBB) in
Okazaki, Japan and at the Okinawa Institute of Science and Technology (OIST) in Okinawa, Japan (14–19 October
2012) bridged the fields of EvoDevo, symbiosis and coral reef ecology.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
Focus is published by Oregon State University College of Forestry. Our goal is to keep Forestry alumni, friends, faculty, staff, and students informed about the College of Forestry and its many activities and programs.
As XML becomes more and more popular, easy-to-use and powerful XML query languages are in great need. Xing is a visual query and restructuring language for XML documents. The objective of this project is to develop a basic version of Xing, including a user-oriented XML query interface and a simple...
Cannabis production has gained popularity over the last 10 years. There is a growing demand for true-to-type grain, fiber, and resin crops. Breeding for homozygous trait development with traditional methods can take as long as 8 years. With dihaploid breeding, homozygosity can be achieved in 2 generations saving breeders time...
We measure the forward-backward asymmetries A[subscript]FB of charged Ξ and Ω baryons produced in p (p) over bar collisions recorded by the D0 detector at the Fermilab Tevatron collider at √s = 1.96 TeV as a function of the baryon rapidity y. We find that the asymmetries A[subscript]FB for charged...
Arctic warming is exposing thawing permafrost to repeated freeze-thaw, a disruptive process that can alter soil biogeochemistry and physical structure. To investigate the impact of permafrost exposure to freeze-thaw, soil response was tested across three scales: 2.5 cm³ aggregates, a forested hillslope, and two sites at contrasting latitudes. XCT imaging...
As we contemplate the future of forest landscapes under changing climate conditions and land-use demands, there is increasing value in studying historic forest conditions and how these landscapes have changed following past disturbances. Historic landscape paintings are a potential source of data on preindustrial forests with highly detailed, full-color depictions...
Concentrations of H₂O and CO₂ in olivine-hosted melt inclusions can be used to estimate crystallization depths for the olivine host. However, the original dissolved CO₂ concentration of melt inclusions at the time of trapping can be difficult to measure directly because in many cases substantial CO₂ is transferred to shrinkage...