Index Catalog // ScholarsArchive@OSU

Pear : 2019 pest management guide for the Willamette Valley

Creator:: Wiman, Nik G., Pscheidt, Jay W., and Peachey, Ed
Abstract:: Recommends pest management practices for pear. 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
Resource Type:: Technical Report

The Geometry of the Penrose Diagram for Minkowski Spacetime

Creator:: Siebersma, Maxwell
Abstract:: Culture of Writing Award in Mathematics (2022)
Resource Type:: Technical Report

Prune and plum : 2018 pest management guide for the Willamette Valley

Creator:: Pscheidt, Jay W., Wiman, Nik, and Moretti, Marcelo
Abstract:: Recommends pest management practices for prune and plum. Revised April 2018. For the most current information, visit http://extension.oregonstate.edu/catalog
Resource Type:: Technical Report

Market research, consumer analysis & recommendations for selected processed vegetables in Oregon

Creator:: Willis, Victor
Abstract:: The Oregon Processed Vegetable Commission (OPVC) is one of twenty-three commodity commissions that fall under the jurisdiction of the Oregon Department of Agriculture (ODA). In 2020, the OPVC was successfully awarded a 3-year grant under the FDA’s Specialty Crop Block Grant Program (SCBGP) to conduct ‘Market Research and Development to...
Resource Type:: Technical Report

Assessing sexual harassment policy communication and impact at sea

Creator:: Conway, Flaxen D. L., Jordan, Stephanie, Shroyer, Emily, and Winters, Johna
Abstract:: A white paper form of J. Winter’s Oregon State University Master of Science Project.
Resource Type:: Technical Report

Update on project to evaluate lines from the OSU snap bean breeding program for white mold resistance

Creator:: Myers, James
Abstract:: Approximately 900 lines were evaluated, from which 351 lines (337 experimental and 14 named cultivars) were then genotyped. The lines that were retained were planted in the field in 2021 at the Vegetable Research Farm and DNA was extracted from developing leaves. The DNA was quantified, adjusted for concentration and...
Resource Type:: Technical Report

Sensory evaluation of fresh vs. frozen processed vegetables

Creator:: Colonna, Ann
Abstract:: Consumer sensory evaluations were conducted with Oregon consumers to asses perceived quality in processed frozen vegetables vs. their fresh counterparts. 108 consumers were tested at an Oregon farmstand to investigate consumer preference for fresh vs. frozen select processed vegetables in appearance, aroma, color, overall liking, flavor, texture; to probe the...
Resource Type:: Technical Report

Monitoring soil moisture and temperature impacts on soilborne fusarium diseases in processing vegetable cropping systems

Creator:: Buckland, Kristine and Ocamb, Cynthia M.
Abstract:: Sweet corn and snap bean production, amongst other vegetable crops grown in the Willamette Valley of Oregon, are impacted by soilborne diseases caused by Fusarium species. The decline in sweet corn yields due to Fusarium crown and stalk node rot as well as root rot in snap bean and sweet...
Resource Type:: Technical Report

Broccoli heat tolerance and varietal evaluation in western Oregon

Creator:: Nagy, Andy, Stone, Alex, Myers, Jim, and Peachey, Ed
Abstract:: With the hot summers of recent years causing significant heat damage to broccoli heads within the Willamette valley, varietal screenings for newer and more heat tolerant varieties became necessary. Most commercially available broccoli varieties are bred for production within milder and more climatically stable regions, such as the Salinas Valley...
Resource Type:: Technical Report

Failure-resilient congestion-aware load balancing protocol for three-tier clos data centers

Creator:: Alanazi, Sultan and Hamdaoui, Bechir
Abstract:: Clos-based network topologies have been deployed in production data center networks to provide multiple path alternatives between the pairs of network hosts. Production data centers operate under varying traffic dynamics and topological asymmetry. Therefore, a good load balancing scheme must adapt to network conditions and dynamics in real-time and intelligently...
Resource Type:: Technical Report

Conserving water in your yard and garden

Creator:: VanDerZanden, Ann Marie, McNeilan, Jan, and Edmunds, Brooke
Abstract:: When water supplies are restricted, you can keep your landscape healthy by developing water priorities, applying water efficiently, and modifying your maintenance practices.
Resource Type:: Technical Report

Alternative snap bean planting strategies to facilitate mechanical in-row weeding : final report

Creator:: Peachey, R. Edward
Abstract:: Nonchemical weed control strategies are in short supply in snap beans, particularly strategies that target weeds within the seed row. Recent work demonstrated the limitations of propane flaming and organic herbicides for weed control in stale seedbeds. There was very little improvement in weed control with propane flame or organic...
Resource Type:: Technical Report

Resource planning power flow & feasibility study

Creator:: von Jouanne, Annette and Wallace, Alan
Abstract:: The OSU Motor Systems Resource Facility (MSRF), co-directed by the Principal Investigators (PI's, bios included), is an Energy Systems Laboratory with operating capabilities up to 750kV A, testbeds up to 300hp, a 120kVA fully programmable source, and a bi-directional grid interface enabling regeneration back onto the grid. The MSRF was...
Resource Type:: Technical Report

Laboratory testing of the MagnaGuard coupling

Creator:: Oregon State University. Motor Systems Resource Facility
Abstract:: A preproduction prototype of the MagnaGuard Coupling, model 12.5, has been tested to evaluate its performance. The coupling was tested in both deceleration and acceleration modes, to evaluate its capability to disengage jammed or stalled loads and to provide soft-start, respectively. The unit was evaluated at three different airgap settings...
Resource Type:: Technical Report

An overview of cogeneration

Creator:: Holmes, Michael
Abstract:: This paper presents an overview of cogeneration, also known as combined heat and power (CHP). The technology of cogeneration is described and the three primary cogeneration processes are discussed. The transition between parallel operation with the utility and stand-alone operation is discussed. The tradeoff between a synchronous and an induction...
Resource Type:: Technical Report

AQ-CAR : adaptive-queueing congestion-aware routing for datacenter traffic forwarding

Creator:: Alanazi, Sultan and Hamdaoui, Bechir
Abstract:: Modern datacenters are constructed with multirooted tree topologies and support multiple service queues per switch port. They support a wide variety of applications and services with stringent performance needs and conflicting requirements. To meet these requirements, recent works focus on load balancing or ECN marking approaches. Though existing load-balancing approaches...
Resource Type:: Technical Report

Fair packet enqueueing and marking in multi-queue datacenter networks

Creator:: Alanazi, Sultan and Hamdaoui, Bechir
Abstract:: Recently, Explicit Congestion Notification (ECN) has been leveraged by most Datacenter Network (DCN) protocols for congestion control to achieve high throughput and low latency. However, the majority of these approaches assume that each switch port has one queue while current industry trends towards having multiple queues per switch port. To...
Resource Type:: Technical Report

A benchmark suite for parallel computers : part II

Creator:: Shen, Jisheng and Lewis, Ted G.
Resource Type:: Technical Report

Corona, radio influence voltage and radiated radio noise characteristics for ACSR Chukar conductor, 1.602 inches diameter

Creator:: McMillan, F. O. and Stone, Louis N.
Resource Type:: Technical Report

Twin bundle conductors : ASCR Eagle, Drake and Pheasant, corona and radio influence voltage characteristics

Creator:: McMillan, F. O. and Stone, Louis N.
Resource Type:: Technical Report

R.I.V. and flashover characteristics : Preformed Line Products Company : wraplock ties, line guards, and dead-ends

Creator:: Stone, Louis N. and Churchill, Thomas L.
Resource Type:: Technical Report

Assessment of the permanent magnet adjustable-speed coupling system (ASCS)

Creator:: Wallace, Alan and von Jouanne, Annette
Abstract:: The purpose of this report is to provide information on the adjustable-speed coupling system (ASCS) including: physical construction, principles of operation, application potential, and laboratory and field test results. In addition, comparison laboratory tests will be presented for conventional adjustable speed drives (ASDs). The ASCS has been tested at three...
Resource Type:: Technical Report

High-voltage characteristics of twin bundle drake, cardinal, and curlew with bundle spaces and armor grip suspension units

Creator:: Stone, Louis N.
Resource Type:: Technical Report

Two notes on the complexity of the Towers of Hanoi. I. Is Towers of Hanoi really hard? II. Time complexity of the Towers of Hanoi problem

Creator:: Cull, Paul and Gerety, Colin
Resource Type:: Technical Report

Future climate projections. Jackson County : February 2023

Creator:: Dalton, Meghan, Fleishman, Erica, and Bachelet, Dominique
Abstract:: Climate change is expected to increase the occurrence of many climate-related natural hazards. Confidence that the risk of heat waves will increase is very high given strong evidence in the peer-reviewed literature, consistency among the projections of different global climate models, and robust scientific principles that explain why temperatures increase...
Resource Type:: Technical Report

Future climate projections. Clackamas County : February 2023

Creator:: Dalton, Meghan, Fleishman, Erica, and Bachelet, Dominique
Abstract:: Climate change is expected to increase the occurrence of many climate-related natural hazards. Confidence that the risk of heat waves will increase is very high given strong evidence in the peer-reviewed literature, consistency among the projections of different global climate models, and robust scientific principles that explain why temperatures increase...
Resource Type:: Technical Report

Bridge Creek Wilderness : Wilderness Character Baseline Assessment Report

Creator:: Deibel, Jenna and Hall, Troy
Abstract:: This report assesses how current management actions are adhering to the original mandate set by the Wilderness Act of 1964 by monitoring the five qualities of Wilderness character (untrammeled, natural, undeveloped, opportunities for solitude/unconfined recreation, and other features of value) as they pertain to this specific Wilderness area.
Resource Type:: Technical Report

Status of the European Green Crab, Carcinus maenas, (aka 5-spine crab) in Oregon Estuaries. Report for 2022

Creator:: Yamada, Sylvia Behrens, Royer, Cameron, Schooler, Shon, Flitcroft, Rebecca, Vance, Mitch, Randall, Andrea, and Fisher, Jennifer
Abstract:: The European green crab (Carcinus maenas) has persisted in Oregon and Washington coastal estuaries since the late 1990s. A strong year class arrived during the 1998 El Niño, but numbers decreased and remained below 1 per trap per day until the arrival of the 2015-2016 El Niño. Since then, numbers...
Resource Type:: Technical Report

Vernonia Community Indicators of Vitality: 2013 Baseline Assessment Executive Summary

Creator:: Grotta, Amy
Abstract:: This document summarizes the Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural Studies Program, and the...
Resource Type:: Technical Report

Vernonia Community Indicators of Vitality: 2013 Baseline Assessment Report

Creator:: Grotta, Amy
Abstract:: This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
Resource Type:: Technical Report

From concrete forms to generalized abstractions through perspective-oriented analysis of logical relationships

Creator:: Yang, Sherry and Burnett, Margaret M.
Abstract:: We believe concreteness, direct manipulation and responsiveness in a visual programming language increase its usefulness. However, these characteristics present a challenge in generalizing programs for reuse, especially when concrete examples are used as one way of achieving concreteness. In this paper, we present a technique to solve this problem by...
Resource Type:: Technical Report

Software configuration management (SCM) support process capability maturity model

Creator:: Ghotra, Baljinder Singh
Abstract:: Software Configuration Management (SCM) is a concept of trying to group the changing artifacts of software development to try to manage the complexity of modern day software. This paper provides a roadmap for improving the SCM support process based on a meta-model. I developed a model that defines key practice...
Resource Type:: Technical Report

Best sorting algorithm for nearly sorted lists

Creator:: Kim, Do Jin
Resource Type:: Technical Report

Sacagawea: a testbed for experimenting with real-time problem solving techniques

Creator:: Koerper, Greg
Abstract:: The Sacagawea testbed has been designed to support testing and development of decision making models, and associated uncertainty management techniques, that are appropriate under real-time problem solving constraints. Conceptually, it provides a simulated temporal and spatial environment, the latter consisting of a terrain grid of elevation and tree cover data,...
Resource Type:: Technical Report

Algorithms for computing sprinkler layouts for lawns

Creator:: Krishnappa, Chirayu
Abstract:: Watering a lawn involves several factors such as laying out the sprinklers and valves, trenching, laying pipes, cables, etc. The primary goal is to ensure uniform watering subject to various constraints. We present some abstract problems involving sprinkler layout and some solutions with theoretical worst case bounds on their performance....
Resource Type:: Technical Report

Effect of update merging on reliable storage performance

Creator:: Liu, Ching-Chao and Minoura, Toshimi
Abstract:: Performance of a reliable storage subsystem for a centralized database system was studied by simulation. The reliable storage subsystem studied consists of three redundant disk units that are updated one at a time from a consistent database state to another consistent database state, Thus, even if a central processor and/or...
Resource Type:: Technical Report

Preliminary results of an experimental study of the mechanical design process

Creator:: Ullman, David G., Stauffer, Larry A., and Dietterich, Thomas G.
Abstract:: This paper presents the initial results from an empirical study of mechanical design engineers. In this study, six engineers were video-taped solving real mechanical design problems. Preliminary analysis of this protocol data has yielded several important findings, including (a) mechanical designers progress from systematic to opportunistic behavior as the design...
Resource Type:: Technical Report

Pipelining performance of structured dataflow networks

Creator:: Tonge, Fred. M.
Abstract:: 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...
Resource Type:: Technical Report

Computer science and computer engineering research equipment

Creator:: Tonge, Fred M.
Abstract:: 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...
Resource Type:: Technical Report

Position estimation

Creator:: McKenney, Paul E.
Abstract:: Acoustic position estimation is used where high accuracy navigation is required over a small area, such as for searching or for collecting gravitational or geomagnetic data. In this position estimation method, a surface ship or submersible periodically sends out a high-frequency acoustic 'ping' at a prearranged frequency. This ping is...
Resource Type:: Technical Report

Expert systems for exploratory data analysis : towards automated research

Creator:: Springsteel, Fred Neil
Abstract:: Exploratory Data Analysis (EDA) is a lesser known field which has outgrown the bounds of statistics. It differs from ordinary, or “confirmatory”, data analysis. Originated by John Tukey, EDA aspires toward an open-ended meta-goal: to discover “all interesting” [nontrivial, normal form, valid] hypotheses about a domain that is represented by...
Resource Type:: Technical Report

Biomedical knowledge acquisition : three systems reviewed

Creator:: Springsteel, Frederick Neil
Abstract:: Recent advances in diagnostic expert systems have been limited by the crucial Knowledge Acquisition Problem: to bring expert heuristics into logical, conditional rule forms useful for computer aided diagnosis. Some automatic systems with potential biomedical relevance that do acquire knowledge are reviewed here, and analyzed from the standpoint of possible...
Resource Type:: Technical Report

Type systems of object-oriented programming languages

Creator:: Sandberg, David W.
Abstract:: Three different approaches to type checking have been taken in object-oriented programming languages. Smalltalk-80 uses run-time type checking. C++ uses subtypes. A third alternative is to use parameterized types. We examine the difficulties of programming in an object-oriented fashion with compile-time type checking and argue that parameterized types are better...
Resource Type:: Technical Report

Typographic style is more than cosmetic

Creator:: Oman, Paul W. and Cook, Curtis R.
Abstract:: There is disagreement about the role and importance of typographic style (source code formatting and commenting) in program comprehension. Results from experiments and opinions in programming style books are mixed. This paper presents principles of typographic style consistent and compatible with the results of program comprehension studies. It introduces the...
Resource Type:: Technical Report

Preliminary X2 language reference manual

Creator:: Sandberg, David
Abstract:: X2 is an object-oriented programming language. Object-oriented programming models everything in the world as objects that have some local state that may vary with time. If the state of an object varies with time the object is mutable. If the state is time independent the object is immutable. Each object's...
Resource Type:: Technical Report

Particularity in engineering data

Creator:: Rehfuss, Steve, Freiling, Michael J., and Alexander, Jim
Abstract:: A database to be used by electrical circuit design, test, and repair expert systems must support both structural data and inferential data about the circuit. It is well known that engineering databases must support dynamic schema (re)definition of the structural data and entity-based access to it. We analyze this requirement...
Resource Type:: Technical Report

Effects of programming experience in debugging semantic errors

Creator:: Oman, Paul W., Cook, Curtis R., and Nanja, Murthi
Abstract:: This paper presents the results of a controlled experiment comparing debugging abilities of novice, intermediate and skilled student programmers. Debugging performance differences were studied using two single-page Pascal programs: a binary search program and a median calculation program. Two types of semantic errors, array bounds and undefined variable, and two...
Resource Type:: Technical Report

An empirical study of UNIX command abbreviation schemes

Creator:: Nanja, Murthi and Cook, Curtis R.
Abstract:: This study examined the UNIX command abbreviation schemes preferred by expert and novice UNIX programmers. The two parts of the conducted experiment were: subjective rating of UNIX command abbreviations for each of the six abbreviation categories (acronym, combination, contraction, identity, synonym, and truncation); subjects suggested descriptive command names for UNDC...
Resource Type:: Technical Report

A preliminary investigation of the effects of FORTRAN data declaration and type conversion features on program comprehension

Creator:: Nanja, Murthy and Cook, Curtis R.
Abstract:: FORTRAN permits both explicit and implicit options for both data declaration and type conversion features. This study investigated the effects of explicit and implicit data declaration and type conversion features on a program comprehension task performed by FORTRAN programmers in an introductory programming course. The results indicated that both factors...
Resource Type:: Technical Report

Program comprehension differences in debugging

Creator:: Nanja, Murthi and Cook, Curtis R.
Abstract:: Many studies have shown that expert programmers are more effective at debugging programs than novice programmers. These studies have suggested that the major reason for this difference is due to the experts' superior comprehension of the program. This paper reports two experiments which investigated expert and novice student programmers program...
Resource Type:: Technical Report

Implementation of a distributed commit/termination protocol by communicating Moore machines

Creator:: Minoura, Toshimi
Abstract:: In this short paper, we present an implementation method for a distributed commit/ termination protocol for a distributed database system. The protocol, which handles both commit and termination processing of distributed transactions, is represented by communicating Moore machines. Several advantages of our approach are discussed.
Resource Type:: Technical Report

Multi-level concurrency control of a database system

Creator:: Minoura, Toshimi
Abstract:: A typical database system maintains target data, which contain information useful for users, and access path data, which facilitate faster accesses to target data. Further, most large database systems support concurrent processing of multiple transactions. For a static database system model, where units of concurrency control are not dynamically created...
Resource Type:: Technical Report

Capability-based resiliency control of distributed database systems

Creator:: Minoura, Toshimi and Vidyasankar, K.
Abstract:: It is highly desirable for a distributed database system to achieve logically continuous operation even if some sites or message links fail. In this paper, we describe a scheme that can automatically reconfigure a fully-replicated distributed database system upon subsystem failures. The scheme can tolerate total failures of some sites....
Resource Type:: Technical Report

Consistent distributed database state maintenance

Creator:: Minoura, Toshimi, Owicki, Susan S., and Wiederhold, Gia
Abstract:: A theory for resiliency control of distributed database systems is developed, and schemes that preserve the consistent global database state in the presence of site crashes and message link failures are discussed. The schemes can at least theoretically be paired with any concurrency control scheme that produces y-serializable executions. Further,...
Resource Type:: Technical Report

Serializability test by pebbling

Creator:: Minoura, Toshimi
Abstract:: An execution of a database system is considered correct if its net effect is as if transactions were executed serially, and such an execution is called serializable. In this short paper we show that the serializability test problem can be reduced to a simple pebbling problem. Our characterization is intuitive...
Resource Type:: Technical Report

True-copy token scheme for a distributed database system

Creator:: Minoura, Toshimi, Owicki, Susan S., and Wiederhold, Gio
Abstract:: A concurrency and resiliency control scheme for a distributed database system with replicated data is discussed. The scheme, true-copy token scheme, uses true-copy tokens in order to designate the physical data copies (true copies) that can be identified with the current logical data that are globally unique, and then it...
Resource Type:: Technical Report

High-level language research and development, High-level language design considerations for firmware engineering of microprogrammable computers

Creator:: Lewis, Ted G., Malik, K., and Dietterich, Thomas G.
Abstract:: Microprogramming has evolved since its introduction in 1951 by Maurice Wilkes. The most significant change that has taken place is the recent growth of interest in user microprogramming. However, user microprogramming is a difficult task because of various complex and intricate features of the host processors. A microprogrammer must be...
Resource Type:: Technical Report

A note on the style metric of Berry and Meekings

Creator:: Harrison, Warren and Cook, Curtis R.
Abstract:: The "style metric" of Berry and Meekings is purported to quantify the lucidity of software written in the C programming language. We used a modification of this metric to try and identify error-prone software. Our results indicate that this metric seems to bear little relationship to the density of errors...
Resource Type:: Technical Report

Two short papers on machine learning

Creator:: Flann, Nicholas S. and Dietterich, Thomas G.
Abstract:: This technical report reprints two articles that appeared in Proceedings of the Third International Machine Learning Workshop at Skytop, Pennsylvania, June 24-26, 1985. The first paper, The EG Project: Recent Progress, summarizes work on the EG project, which is investigating the role of active experimentation in aiding machine learning programs....
Resource Type:: Technical Report

STYLE : an automated program style analyzer for Pascal

Creator:: Lake, Al and Cook, Curtis R.
Resource Type:: Technical Report

Internal hashing for dynamic and static tables

Creator:: Lewis, Ted G. and Cook, Curtis R.
Abstract:: This tutorial discusses one of the oldest problems in computing: how to search and retrieve keyed information from a list in the least amount of time. Hashing - a technique that mathematically converts a key into a storage address - is one of the best methods of finding and retrieving...
Resource Type:: Technical Report

SIDUR - an integrated data model

Creator:: Freiling, Michael J.
Abstract:: Tbc expanding complexity of database application worlds, and the accelerating pace of change of these worlds mandate data models which support some of the tasks of data interpretation which formerly were borne by the applications programs. Chief among these are the support for virtual data, definition of transactions, and enforcement...
Resource Type:: Technical Report

Software development in parallax : the ELGDF Language, ELGDF : design language for parallel programming

Creator:: El-Rewini, Hesham and Lewis, Ted G.
Abstract:: ELGDF (Extended Large Grain Data Flow) is a design language that allows representation of a wide variety of parallel programs. The syntax is graphical and hierarchical to allow construction and viewing of realistically sized programs. ELGDF language facilitates describing parallel programs in a natural way for both shared memory model...
Resource Type:: Technical Report

Parallel algorithms for decomposed linear programs

Creator:: Wu, Youfeng and Lewis, Ted G.
Abstract:: New parallel algorithms for solving the decomposed linear programs are developed. Direct parallelization of the sequential algorithm results in very limited performance improvement using multiple processors. By redesigning the algorithm, we achieved more than 2*P times performance improvement over the sequential algorithm, where P is the number of processors used...
Resource Type:: Technical Report

A powerdoman semantics for indeterminism

Creator:: Wise, David S.
Abstract:: A denotational semantics is presented for a language that includes multiple-valued functions (essentially Lisp S-expressions), which map from ground values into the power domain of ground values. The domain equations are reflexive. and fixed points of all functions are defined. Thus, it is possible to specify an operating system as...
Resource Type:: Technical Report

Representing matrices as quadtrees for parallel processors

Creator:: Wise, David S.
Resource Type:: Technical Report

The applicative style of programming

Creator:: Wise, David S.
Resource Type:: Technical Report

VNS -- a virtual network simulator

Creator:: Domka, Walter F. and Freiling, Michael J.
Abstract:: A software system to study network algorithms was implemented on UNIX. Each part of a network algorithm can be written as a single C program which becomes a virtual node in the network. During a simulation all virtualized nodes run as separate processes on a single PDP 11/44. Inter-node communication...
Resource Type:: Technical Report

A hybrid approach to reasoning under uncertainty

Creator:: D'Ambrosio, Bruce
Abstract:: A complete approach to reasoning under uncertainty requires support for both identification of the appropriate hypothesis space and ranking hypotheses based on available evidence. We present a hybrid reasoning scheme which combines symbolic and numeric methods for uncertainty management to provide efficient and effective support for both of these tasks....
Resource Type:: Technical Report

FORLOG : a logic-based architecture for design

Creator:: Dietterich, Thomas G. and Ullman, David G.
Abstract:: It is difficult to build intelligent computer-aided design (ICAD) programs using available expert system shells and AI programming languages. To build ICAD programs, tools are needed that support (a) generative search of design spaces, (b) deep search of design spaces to evaluate alternative designs, (c) simultaneous exploration of alternative designs...
Resource Type:: Technical Report

Artificial intelligence at OSU

Creator:: Dietterich, Thomas G. and D'Ambrosio, Bruce
Abstract:: This report describes of current research in Artificial Intelligence at Oregon State University. The five areas of active research are ( a) intelligent aids for mechanical engineering design, (b) active experimentation as a method in machine learning, ( c) techniques for combining logic programming and assumption-based truth maintenance, ( d)...
Resource Type:: Technical Report

An inductive approach to solving the imperfect theory problem

Creator:: Dietterich, Thomas G. and Flann, Nicholas S.
Resource Type:: Technical Report

A summary of machine learning papers from IJCAI-85

Creator:: Dietterich, Thomas G., Flann, Nicholas S., and Wilkins, David C.
Abstract:: This report reviews the 31 papers on machine learning that were presented at the Ninth International Joint Conference on Artificial Intelligence (IJCAI-85) held in Los Angeles during August, 1985. The papers are grouped according to a taxonomy of the various subareas of machine learning research. The areas receiving the most...
Resource Type:: Technical Report

A knowledge level analysis of learning programs

Creator:: Dietterich, Thomas G.
Abstract:: This chapter develops a taxonomy of learning methods using techniques based on Newell’s knowledge level. Two properties of each system are defined: knowledge level predictability and knowledge level learning. A system is predictable at the knowledge level if the principle of rationality can be applied to predict its behavior. A...
Resource Type:: Technical Report

Learning at the knowledge level

Creator:: Dietterich, Thomas G.
Abstract:: When Newell introduced the concept of the knowledge level as a useful level of description for computer systems, he focused on the representation of knowledge. This paper applies the knowledge level notion to the problem of knowledge acquisition. Two interesting issues arise. First, some existing machine learning programs appear to...
Resource Type:: Technical Report

Spring Cereal Forage Applied Water Use

Creator:: Bohle, Mylen
Abstract:: Drought is a major concern for producers of food and forage crops. According to the U.S. Drought monitor, Central and Eastern Oregon in particular, are in severe drought. In the early 1990's, a trial was conducted to determine the yield per inch of water applied to 5 cereal species: barley,...
Resource Type:: Technical Report

Preventing and Controlling Powderpost Beetles In and Around the Home

Creator:: De Angelis, Jack D.
Abstract:: This PNW Extension publication provides an overview of various types of powderpost beetles, the symptoms associated with their damage, as well as tips for prevention and control.
Resource Type:: Technical Report

How Oregon State University Programming Supports the Development of Agritourism Activities (Including Farm-Direct Sales) in Oregon

Creator:: Stewart, Mary and Comerford, Audrey
Abstract:: Oregon State University (OSU) faculty members have supported the success of agriculture producers and their businesses for more than 100 years. Through research, education and community engagement, OSU faculty have helped agriculture producers and value-added operators respond to threats and opportunities in a manner that has brought vitality and sustainability...
Resource Type:: Technical Report

Economic Linkages and Impact Analysis for the Oregon Sea Grant Programmed and Operated Hatfield Marine Science Center Visitor Center

Creator:: Sorte, Bruce, McBride, Catherine, Rahe, Mallory, and Lev, Larry
Abstract:: The Oregon Sea Grant Visitor Center at Hatfield Marine Science Center attracts 150,000 visitors a year and does not require an admission fee. Surveying visitors, 39% of all people indicated that half or more of their reason for coming to the Oregon coast was to visit the Visitor Center.
Resource Type:: Technical Report

Measuring Community Action Program Impacts on Multi-Dimensional Poverty: Final Report of the Futures Project

Creator:: Torgerson, Melissa
Abstract:: The Community Action Partnership of Oregon (CAPO) approached Oregon State University to assist in developing statewide indicators which help local agencies better utilize data for continuous improvement. The project was expanded to include Washington and Idaho. This report summarizes the project's findings.
Resource Type:: Technical Report

Vital Wallowa Indicator Project: 2009 Baseline Assessment Report

Creator:: Etuk, Lena and Crandall, Mindy
Abstract:: This report details a collaborative effort of the Wallowa Resources, Northeast Oregon Economic Development District and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program to develop indicators of Wallowa County community vitality in a way that reflects the goals and values of the...
Resource Type:: Technical Report

Wallowa County Indicators of Vitality: 2009 Report Summary

Creator:: Etuk, Lena and Crandall, Mindy
Abstract:: This document summarizes a collaborative effort of the Wallowa Resources, Northeast Oregon Economic Development District and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program to develop indicators of Wallowa County community vitality in a way that reflects the goals and values of the...
Resource Type:: Technical Report

Vernonia Community Indicators of Vitality: 2013 Baseline Assessment Report

Creator:: Grotta, Amy
Abstract:: This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
Resource Type:: Technical Report

Vernonia Community Indicators of Vitality: 2013 Baseline Assessment Summary

Creator:: Grotta, Amy
Abstract:: This document is a report on the Baseline Vital Vernonia Indicator Project, an effort aimed at exploring community vitality in Vernonia, particularly in light of recent catastrophic floods and subsequent rebuilding and community development initiatives. The Vital Vernonia Indicator Project is a collaboration of Oregon State University Extension Service, Rural...
Resource Type:: Technical Report

Tillamook County: 2020 Strategic Vision. Indicator Report & Assessment, 2009–2014. Executive summary

Creator:: Etuk, Lena
Abstract:: A product of the Vital Tillamook Indicator Project. This executive summary provides an overview of a collaborative effort of the Tillamook County Futures Council and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program developed 50 indicators of Tillamook County: 2020 Strategic Vision in...
Resource Type:: Technical Report

Tillamook County: 2020 Strategic Vision. 2009-2014 Indicator Assessment Report

Creator:: Etuk, Lena
Abstract:: A product of the Vital Tillamook Indicator Project. This report details a collaborative effort of the Tillamook County Futures Council and Oregon State University faculty members jointly affiliated with Extension Service and the Rural Studies Program developed 50 indicators of Tillamook County: 2020 Strategic Vision in order to gain insight...
Resource Type:: Technical Report

Estimating Nitrogen Contribution from Cover Crops on Organic Vegetable and Cane Berry Farms : Final report

Creator:: Andrews, Nick and Stephenson, Garry
Abstract:: The main objective of this project was to compare on-farm measurement techniques for estimating N-contributions from cover crops using 1) separated species lab tests (a standard experimental method), 2) bulked species lab tests, 3) fresh weight, 4) dry weight and 5) canopy height and density. We also recorded relative weed...
Resource Type:: Technical Report

WealthWorks Northwest Evaluation

Creator:: Hause, Amy and Rahe, Mallory
Abstract:: Evaluation of WealthWorks Northwest in Exploration & Construction Regions from 2014–2016.
Resource Type:: Technical Report

Tribal climate adaptation guidebook : version 1.0

Creator:: Dalton, Meghan, Chisholm Hatfield, Samantha, and Petersen, Alexander “Sascha”
Abstract:: This Guidebook follows a holistic approach to adaptation planning called community-driven climate resilience planning. Community-driven climate resilience planning is “the process by which residents of vulnerable and impacted communities define for themselves the complex climate challenges they face, and the climate solutions most relevant to their unique assets and threats.”...
Resource Type:: Technical Report

Historical trends and future projections of climate and streamflow in the Willamette Valley and Rogue River Basins

Creator:: Dalton, Meghan, Rupp, David, Dello, Kathie, and Mote, Philip
Abstract:: A report to the US Army Corps of Engineers Portland District Office.
Resource Type:: Technical Report

Projected climate change impacts on water demand and supply for the City of Corvallis

Creator:: Rupp, David E.
Abstract:: A report to Carollo Engineers, Inc.
Resource Type:: Technical Report

Towers of Hanoi and analysis of algorithms

Creator:: Cull, Paul and Ecklund, Earl F., Jr.
Resource Type:: Technical Report

Tours of graphs, digraphs and sequential machines

Creator:: Cull, Paul
Abstract:: A tour of a graph (digraph, or sequential machine) is a sequence of nodes from the graph such that each node appears at least once and two nodes are adjacent in the sequence only if they are adjacent in the graph. Finding the shortest tour. of a graph is known...
Resource Type:: Technical Report

The test incorporation hypothesis and the weak methods

Creator:: Bennett, James S. and Dietterich, Thomas G.
Abstract:: Test incorporations are program transformations that improve the performance of generate-and-test procedures by moving information out of the "test" and into the "generator." The test information is said to be "incorporated" into the generator so that items produced by the generator are guaranteed to satisfy the incorporated test. This article...
Resource Type:: Technical Report

A new strategy for processors allocation in an n-cube multiprocessor

Creator:: Al-Dhelaan, Abdullah and Bose, Bella
Abstract:: In this paper we will describe two known strategies for static processors allocation in an n-cube multiprocessor, namely the buddy system strategy and the gray code strategy and then propose a new strategy that outperforms the first by (n-k+1) and the second by (n-k+1)/2 in cube recognition. Furthermore, our strategy...
Resource Type:: Technical Report

A computational model of resource-bounded reasoning and decision-making under uncertainty

Creator:: D'Ambrosio, Bruce
Abstract:: A complete approach to uncertainty management requires support for interactive and incremental problem formulation, inference, hypothesis ranking, and decision making. In addition, computational models must allow for time and resource bounds. Current approaches to uncertainty management concentrate primarily on inference, provide little or no support for the larger issues in...
Resource Type:: Technical Report

Efficient fault tolerant broadcasting algorithm for the hypercube

Creator:: Al-Dhelaan, Abdullah and Bose, Bella
Abstract:: One of the most popular topologies is the hypercube, that has n = 2ᵏ processors, numbered 0 to 2ᵏ -1 and connected in such a way that there is a link between any two if and only if they differ in one bit. Its popularity is due to the fact...
Resource Type:: Technical Report

Interactive problem solving in elementary algebra

Creator:: Bregar, William S. and Farley, Arthur M.
Abstract:: A general model of interactive problem solving is described. The model views interactive problem solving to be the product of cooperating subsystems. The operative subsystem selectively attends to and manipulates problem relevant information in search of a solution. The descriptive subsystem is capable of interpreting this behavior and of discussing...
Resource Type:: Technical Report

Numerical considerations on Fibonacci numbers of order r

Creator:: Capocelli, Renato M., Cerbone, Giuseppe, and Cull, Paul
Abstract:: Recently generalized Fibonacci numbers have received increasing attention. Some properties that are well known for traditional Fibonacci numbers do not generalize easily, some others do not generalize at all. In this paper we report some properties that we have generalized. Section 1 introduces the notation and a theorem due to...
Resource Type:: Technical Report

A survey of graph theoretic computer program complexity measures

Creator:: Cook, Curtis R. and Harrison, Warren
Abstract:: A computer program complexity measure is a measure of how easy the program is to understand, test, modify, maintain, etc. Many of these measures are derived from the control or flow graph of the program. We describe these measures graph theoretically, indicate what aspect or aspects of the program they...
Resource Type:: Technical Report

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